Patent Application
20250175210
This application relates to the field of mobile communication technologies, and in particular, to a reference signal sending method and apparatus, a terminal, and a network side device.
A reduced capability (Reduced Capability, RedCap) terminal (also referred to as a user equipment (User Equipment, UE)) should meet requirements for a low complexity and costs. The bandwidth characteristics of the RedCap UE are as follows: In a first frequency range (Frequency Range 1, FR1), the RedCap UE supports a 20 MHz bandwidth at most; and in a second frequency range FR2, the RedCap UE supports a 100 MHz bandwidth at most. An ordinary UE supports 100 MHz at most in the FR1 and 400 MHz at most in the FR2 in a general case.
Embodiments of this application provide a reference signal sending method and apparatus, a terminal, and a network side device.
According to a first aspect, a reference signal sending method is provided, and is applied to a terminal. The method includes:
According to a second aspect, a reference signal sending apparatus is provided, including:
According to a third aspect, a reference signal sending method is provided, and is applied to a network side device. The method includes:
According to a fourth aspect, a reference signal sending apparatus is provided, including:
According to a fifth aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores a program or instructions runnable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.
According to a sixth aspect, a terminal is provided, including a processor and a communication interface, where the communication interface is configured to obtain first information, and send, on M first bandwidth parts, a sounding reference signal for positioning with frequency hopping based on the first information.
According to a seventh aspect, a network side device is provided. The network side device includes a processor and a memory. The memory stores a program or instructions runnable on the processor, and the program or instructions, when executed by the processor, the steps of the method according to the first aspect.
According to an eighth aspect, a network side device is provided, including a processor and a communication interface, where the processor is configured to obtain first information, and the communication interface is configured to measure, on M first bandwidth parts, a sounding reference signal for positioning with frequency hopping based on the first information to obtain a positioning measurement result of a terminal.
According to a ninth aspect, a reference signal sending system is provided, including: a terminal and a network side device. The terminal may be configured to perform the steps of the reference signal sending method according to the first aspect. The network side device may be configured to perform the steps of the reference signal sending method according to the third aspect.
According to a tenth aspect, a readable storage medium is provided. The readable storage medium stores a program or instructions. The program or instructions, when executed by a processor, implement the steps of the method according to the first aspect, or the steps of the method according to the third aspect.
According to an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a program or instructions to implement the method according to the first aspect, or implement the method according to the third aspect.
According to a twelfth aspect, a computer program/program product is provided. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the steps of the reference signal sending method according to the first aspect or the reference signal sending method according to the third aspect.
The technical solutions in embodiments of this application are clearly described below with reference to the accompanying drawings in the embodiments of this application. Clearly, the described embodiments are some rather than all of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by a person of ordinary skill in the art fall within the protection scope of this application.
The terms such as “first” and “second” in the specification and claims of this application are intended to distinguish between similar objects, but are not intended to describe a specific sequence or order. It should be understood that the terms used in such a way may be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, the objects distinguished by “first” and “second” are usually of one type, and the number of objects is not limited. For example, one or more first objects may be provided. In addition, “and/or” in the specification and the claims indicates at least one of connected objects, and the character “/” generally indicates an “or” relationship between associated objects.
It should be noted that the technologies described in the embodiments of this application are not limited to a long term evolution (Long Term Evolution, LTE)/LTE-advanced (LTE-Advanced, LTE-A) system, and may be also applied to other wireless communication systems such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms “system” and “network” in the embodiments of this application are often used interchangeably, and the described technology can be applied to the systems and radio technologies mentioned above, and can be also applied to other systems and radio technologies. The following description describes a new radio (New Radio, NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can be also applied to applications other than NR system applications, such as 6th generation (6th Generation, 6G) communication systems.
A reference signal sending method and apparatus, a terminal, and a network side device according to embodiments of this application are described in detail below by some embodiments and application scenarios thereof with reference to the accompanying drawings.
As shown in
S210: A terminal obtains first information.
It should be noted that in an optional embodiment, the terminal is a RedCap UE.
To solve the problem that a bandwidth of the terminal is limited, the embodiment of this application proposes frequency hopping for sending to increase an effective bandwidth of positioning. When sending a sounding reference signal (Sounding Reference Signal, SRS) for positioning, the terminal uses frequency hopping (Frequency Hopping) for sending, and each hop corresponds to a different narrowband (also referred to as a subband (subband)), to send the SRS on a plurality of narrowbands. The network side device receives the SRS on the plurality of narrowbands at different times, and performs SRS measurement, to obtain a narrowband positioning measurement result or a positioning measurement result of the plurality of narrowbands after joint processing, which is equivalent to increasing the effective bandwidth for the SRS.
Optionally, in an embodiment, when sending a sounding reference signal for positioning, the terminal uses frequency hopping for sending, each hop corresponds to a different narrowband (also referred to as a subband), and the SRS needs to be sent on a plurality of narrowbands within a first time range. Optionally, the first time range may be Tms, or a time window. This is because a longer time gap between sending on the plurality of narrowbands indicates higher difficulty in joint processing with reference to the plurality of narrowbands to obtain a corresponding gain.
Optionally, a reference signal that can be used for positioning measurement, for example, a sounding reference signal, a reference signals for sidelink (Sidelink, SL) positioning, or another reference signal for positioning, may be set based on actual requirements. For simplicity, an SRS is taken as an example in the following embodiments for illustration.
The first information obtained by the terminal may include at least one of the following:
The first BWP is a BWP that differs from the normal BWP, and may also be referred to as a virtual BWP or an enhanced BWP (additional BWP).
All or part of the first information can be obtained through at least one of a protocol agreement, a network side configuration, selection by the terminal, and other manners.
It should be noted that all or part of content in the frequency hopping information can be obtained from a related configuration of the first BWP, and all or part of a configuration of the first BWP can alternatively be obtained from the frequency hopping information. It can be seen that in the process of obtaining the first information, the first information can be obtained in an explicit or implicit manner, and part of content is indicated by default.
For example, the network side device may configure and determine related configurations of the M first BWPs based on optional frequency hopping information sent by, for example, a location management function (Location Management Function, LMF).
S220: The terminal sends, on M first BWPs, a sounding reference signal for positioning with frequency hopping based on the first information, where the frequency hopping includes N hops (Hops), each hop corresponds to a different narrowband, and M and N are positive integers.
Based on the first information, the terminal may determine a first BWP, time domain location information, frequency domain position information, and the like corresponding to each hop with frequency hopping when sending the SRS, to determine whether to perform corresponding BWP switching and send the SRS on the first BWP. Correspondingly, based on the first information, the network side device receives, at different times, the SRS hopping on the plurality of narrowbands, and performs SRS measurement, to obtain a narrowband positioning measurement result or a positioning measurement result of the plurality of narrowbands after joint processing.
Optionally, in an embodiment, the terminal determines the M first BWPs based on frequency hopping information (such as the number of frequency hopping), and then sends the reference signal on the first BWPs.
Optionally, in an embodiment, a terminal device is preconfigured with L first BWPs, and the terminal may activate the M first BWPs based on the first information, and then send the reference signal on the M first BWPs. Optionally, L>M.
Optionally, the preconfiguration of the first BWPs in the above-mentioned embodiment may be implemented in the following manner: The network side device (such as an LMF or a base station) is preconfigured with frequency hopping information of optional N1 hops, and the network side device is preconfigured with L first BWPs based on the frequency hopping information of the L1 hops.
Optionally, the terminal sends, on the M first BWPs, a sounding reference signal for positioning based on configuration information of the L first BWPs. In this case, L=M.
Optionally, the terminal sends, on the M first BWPs, a sounding reference signal for positioning based on activation information of the M first BWPs.
Optionally, the terminal sends, on the M first BWPs, a sounding reference signal for positioning based on the frequency hopping information and/or configuration information and/or the activation information of the M first BWPs.
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the sounding reference signal for positioning is sent on the M first BWPs with frequency hopping based on the obtained first information, so that an effective bandwidth for the SRS can be increased and accuracy of positioning measurement can be improved.
Based on the above-mentioned embodiment, a corresponding relationship between the M first BWPs and the N hops for the frequency hopping may be set based on actual requirements. In an implementation, a plurality of first BWPs correspond to multiple hops, that is, each first BWP corresponds to one hop or each first BWP corresponds to one narrowband, for example, M=N. In an optional implementation, the number of preconfigured first BWPs is L, L is greater than or equal to M, and/or L is greater than or equal to N. M first BWPs are selected from the L preconfigured first BWPs to transmit the sounding reference signal on the N hops.
In a case that the plurality of first BWPs correspond to multiple hops, the first indication information includes at least one of the following:
Optionally, the set information of the first BWP set includes at least one of the following:
Optionally, the configuration information of the M first BWPs includes at least one of the following:
Optionally, in an embodiment, the configuration information of the M first BWPs includes common configuration information of the M first BWPs and configuration information exclusive to each first BWP. The common configuration information of the M first BWPs includes at least one of a point A, a frequency domain common offset relative to a cell, a subcarrier spacing (Subcarrier Spacing, SCS), a bandwidth, a cyclic prefix (Cyclic prefix, CP), SRS configuration information, and the like. The configuration information exclusive to each first BWP includes at least one of BWP identifier information, frequency domain position information of each first BWP, and the like.
In another implementation, a corresponding relationship between the M first BWPs and the N hops for the frequency hopping may alternatively be that one first BWP corresponds to multiple hops, for example, M=1, the first BWP corresponds to N hops, and each hop corresponds to a different narrowband on the first BWP. That is, the terminal sends, on one first BWP, a sounding reference signal for positioning with frequency hopping based on the first information.
Optionally, in an implementation, the number of SRS frequency hopping transmissions that can be performed on one first BWP may be 1 or N. For example, the terminal may select one first BWP from a plurality of preconfigured first BWPs to perform SRS frequency hopping transmission.
Optionally, in a case that the first BWP corresponds to multiple hops, the first indication information includes at least one of the following:
Optionally, the configuration information of the multiple hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information of each of the hops corresponding to the first BWP includes at least one of the following:
Optionally, in an implementation, the configuration information of the multiple hops corresponding to the first BWP may include bandwidth information and overlapping bandwidth information of each of the multiple hops corresponding to the first BWP. The frequency domain position of each hop performed by the terminal may be calculated based on the above information. For example, the frequency domain position of the first hop: common frequency domain position; the frequency domain position of the second hop: common frequency domain position+hop associated bandwidth information−overlapping bandwidth information, and a bandwidth of the third hop: common frequency domain position+bandwidth information of the hop*2−overlapping bandwidth information. It should be noted that when the frequency domain position is calculated based on bandwidth information, the bandwidth information may be the number of resource block (Resource Blocks, RBs), the number of resource elements (Resource Elements, REs), or MHz. A unit of the bandwidth information may need to be converted into a unit of the frequency domain position, such as the number of RBs.
Optionally, in an implementation, the configuration information of the multiple hops corresponding to the first BWP may include the number of the multiple hops corresponding to the first BWP, a total bandwidth of the multiple hops, and overlapping bandwidth information. Each hop performed by the terminal may be calculated based on the above information. For example, the frequency domain position of the first hop: common frequency domain position; and the frequency domain position of the second hop: common frequency domain position+total bandwidth information/number of hops. The frequency domain position of the second hop: common frequency domain position+total bandwidth information/number of hops*2. It should be noted that when the frequency domain position is calculated based on bandwidth information, the bandwidth information may be the number of RBs, the number of REs, or MHz. A unit of the bandwidth information may need to be converted into a unit of the frequency domain position, such as the number of RBs.
Optionally, to align all the above frequency domain positions, a constant may need to be subtracted. If constant position addition and subtraction are also included in this solution, for example, the frequency domain position of the second hop is: common frequency domain position+total bandwidth information/number of hops−constant C.
Optionally, in an implementation, the first indication information includes L types of configuration information of multiple hops corresponding to the first BWP, the first BWP may be configured for SRS frequency hopping transmission based on any configuration, and the L types of configuration information may be configured to obtain different configuration information of the multiple hops corresponding to the first BWP. That is, the first indication information includes L types of configuration information of the multiple hops corresponding to one first BWP, and each type includes identification information and configuration information of the multiple hops.
Optionally, the frequency domain position information and/or bandwidth information of each of the multiple hops corresponding to the first BWP satisfies at least one of the following:
In an implementation, a plurality of BWP states (BWP states), such as M BWP states, may be set for the first BWP, and configuration information of the first BWP in each BWP state may be set. The multiple hops corresponding to the first BWP are associated with state information of the BWP states, where each BWP state is a state of the first BWP, and the state information of the BWP state is used to indicate the configuration information of the first BWP in the BWP state. Each BWP state corresponds to one hop, or each BWP state corresponds to multiple hops.
In an implementation, a plurality of BWP state groups, such as L BWP state groups, may be set for the first BWP, and each group includes M BWP states. Configuration information of the BWP state groups is set. The configuration information of the BWP state groups includes common configuration information of the M BWP states and/or configuration information in each BWP state. Optionally, if the terminal indicates a state group of the first BWP, it means that the M BWP states in the state group are activated for SRS frequency hopping transmission. The multiple hops corresponding to the first BWP are associated with state information of the BWP states, where each BWP state is a state of the first BWP, and the state information of the BWP state is used to indicate the configuration information of the first BWP in the BWP state. Each BWP state corresponds to one hop, or each BWP state corresponds to multiple hops.
Optionally, the state information of each BWP state may include at least one of the following:
Optionally, the frequency domain position information and/or bandwidth information of each BWP state satisfies at least one of the following:
Optionally, a bandwidth corresponding to the first BWP is less than or equal to a first bandwidth threshold, or less than or equal to a second bandwidth threshold, a bandwidth associated with each BWP state is less than or equal to the second bandwidth threshold; and a total bandwidth associated with all BWP states is less than or equal to the first bandwidth threshold. For example, the maximum bandwidth of the first BWP is 100 M, and the maximum bandwidth associated with each BWP state is 20 M, or for another example, the maximum bandwidth of the first BWP is 20 M, and the maximum bandwidth associated with the BWP state is 20 M. Herein, the total bandwidth associated with all the BWP states is less than or equal to 100 M.
Optionally, in a case that each BWP state corresponds to multiple hops, state information of the BWP state includes at least one of a frequency domain offset or bandwidth information of the BWP state,
For simplicity, in the following embodiments, an example in which each BWP state corresponds to one hop is taken for illustration.
In another implementation, a corresponding relationship between the M first BWPs and the N hops for the frequency hopping may alternatively be a mixed mode in which one first BWP corresponds to one hop and one first BWP corresponds to multiple hops.
For simplicity, the first BWP in the following embodiments may be expressed as a first BWP in a case that a plurality of first BWPs correspond to multiple hops, or as a first BWP in a BWP state in a case that one first BWP corresponds to multiple hops, and M first BWPs are expressed as first BWPs in M BWP states.
Optionally, the terminal performs or does not perform one or more of the following operations on the M first BWPs:
Optionally, in a case that the first information includes frequency hopping information, the frequency hopping information includes at least one of the following: a number N of the hops for the frequency hopping;
The number N of the hops may be specifically used to indicate a number N of frequency hopping when the terminal sends an SRS with frequency hopping, or to indicate a total number of frequency points for switching the first BWP when the SRS is sent, and may be specifically the number of first BWPs or the number of BWP states of the first BWPs.
Optionally, the number N of the hops is the number of narrowbands, and the number of hops may also be used to indicate the number of narrowbands when the terminal sends an SRS. The terminal sends the SRS with frequency hopping among the N narrowbands.
The number N of the hops may be 2, 4, 8, or the like.
The number N of the hops can be obtained by at least one of a protocol agreement, a network configuration, and selection by the terminal.
Optionally, a numerical value of the hop identifier may be set based on actual requirements, and is, for example, 0 to N−1.
Optionally, a hop indicated by the Hop ID being 0 is the first hop for frequency hopping, or a hop with a lowest frequency domain position.
Optionally, Hop IDs are sequentially arranged in ascending order to indicate a time sequence of the Hops, or a Hop sequence with frequency domain positions in ascending order.
Optionally, there is no overlap in time domain location between different hops.
Optionally, that there is no overlap in time domain location between different hops specifically includes that a time domain gap between different hops is greater than a first time threshold, and the first time threshold is N1 symbols (symbols) or N2 slots (slots).
Optionally, there is partial overlap in the frequency domain positions between the different hops.
Optionally, the first frequency domain position information in the frequency hopping information may include at least one of the following:
Optionally, in a case that the frequency hopping information is determined by a related configuration of first BWPs, the bandwidth and/or the initial frequency domain position of the hop may be determined by the bandwidth and/or the initial frequency domain position of a first BWP corresponding to the hop. In this case, the bandwidth and/or the initial frequency domain position of the hop may be indicated by default, and is indicated by a corresponding first BWP or a corresponding BWP state.
Optionally, in a case that the frequency hopping information is determined by a related configuration of first BWPs, the frequency hopping information is indicated in configuration information of the SRS, and the terminal determines frequency hopping on the first BWPs with reference to configuration information of the first BWPs and the SRS. For example, the SRS is configured with frequency hopping for the terminal to send the SRS, such as intra-slot frequency hopping and frequency hopping times of 2. The terminal performs intra-slot frequency hopping twice on a first BWP based on the configuration of the SRS. For another example, if the terminal is configured with an SRS bandwidth of 64 RB and a frequency hopping offset of 5 RB, the terminal performs frequency hopping at an offset of 64 RB between adjacent hops on the first BWP based on the configuration of the SRS. For another example, if the terminal is configured with inter-slot frequency hopping and frequency hopping times of Z, the terminal performs inter-slot frequency hopping on the first BWP.
In an implementation, the bandwidth and/or the initial frequency domain position of the hop is the bandwidth and/or the initial frequency domain position of the first BWP corresponding to the hop.
In another implementation, the initial frequency domain position of the hop is determined relative to the initial frequency domain position of the first BWP corresponding to the hop.
In another implementation, the initial frequency domain position of the hop is determined relative to the initial frequency domain position of the first BWP corresponding to the hop. The frequency hopping is, for example, at least one of intra-slot frequency hopping, inter-slot frequency hopping, frequency hopping times, an overlapping bandwidth between adjacent hops, frequency hopping bandwidth, and the like, and is determined with frequency hopping indication information of the SRS.
Optionally, in a case that a related configuration of first BWPs is determined by the frequency hopping information, the bandwidth and/or the initial frequency domain position of the hop may be determined by at least one of the following:
Optionally, the initial frequency domain position of the hop may be a frequency domain position of an initial physical resource block (Physical Resource Block, PRB).
Optionally, the bandwidth and/or the initial frequency domain position of each hop satisfies at least one of the following:
Optionally, the initial frequency domain position of the hop is a relative offset relative to a frequency domain reference point.
The frequency domain reference point includes at least one of the following:
Optionally, a subcarrier spacing associated with the offset of the reference point A is consistent with a currently activated BWP (active BWP) or with a subcarrier spacing of the sounding reference signal.
Optionally, the subcarrier spacing associated with the offset of the reference point A is determined by a protocol agreement or a network side configuration (preconfiguration).
Optionally, a frequency domain offset between initial frequency domain positions of adjacent hops in frequency domain is the same. In an implementation, an initial frequency domain position of each hop takes the initial frequency domain position of the hop with the lowest frequency domain position as a frequency domain reference point, and takes the above frequency domain offset as a granularity, and an offset of the initial frequency domain position of each hop relative to the frequency domain reference point is X*frequency domain offset. X and/or the frequency domain offset may be indicated by a network side. X may be the same as the Hop ID.
In another implementation, an initial frequency domain position of each hop takes the initial frequency domain position of the first hop as a frequency domain reference point, and takes the above frequency domain offset as a granularity, and an offset of the initial frequency domain position of each hop relative to the frequency domain reference point is X*frequency domain offset. X and/or the frequency domain offset is indicated by a network. X may be the same as the Hop ID.
Optionally, the overlapping bandwidth may include an overlapping bandwidth overlapping an upper frequency domain position of the hop and an overlapping bandwidth overlapping a lower frequency domain position of the hop.
Optionally, the first time domain location information in the frequency hopping information includes at least one of the following:
A unit of the first time domain location information may be at least one of symbol, slot, subframe (subframe), Ts, Tc, second(s), millisecond (ms), microsecond (us), and nanosecond (ns). When the unit is symbol or slot, an associated SCS is consistent with a BWP currently activated by the terminal. Ts=1/(15 k*2048 s). Tc=1/(480 K*4096) in NR is obtained based on a subcarrier spacing of 480 K as a basic time unit in NR, and sampling rate=number of sampling points*subcarrier spacing=4096*15 K*2u.
In an implementation, that the first time domain location information is determined by time domain location information of the sounding reference signal specifically includes:
Optionally, the first time domain location information is included in the configuration information of the SRS, such as a RRC message.
Optionally, the first time domain location information is included in a first indication field of a DCI, to indicate an offset of the SRS relative to the DCI and/or to indicate an offset of the first BWP relative to the DCI.
Optionally, the first time domain location information satisfies at least one of the following:
In another implementation, the time domain location information in the frequency hopping information is determined by activation information and/or configuration information of the first BWP, where the activation information and/or the configuration information of the first BWP includes at least one of the following:
Optionally, the first time domain location information may alternatively be determined based on the activation information and/or the configuration information of the first BWP and the configuration of the SRS.
Each SRS (for example, each SRS resource, or all repetitions (repetitions) of one SRS, or SRSes of N periods) needs to perform N hops, but time domain locations of different SRSes are different.
Optionally, hop 0 of SRS 0=time domain location X of SRS 0.
Optionally, hop1 of SRS 0=X+K1.
In another implementation, the first time domain location information may be used to determine activation information or an activation length of the first BWP.
In another implementation, the first time domain location information may be used to determine the number of times that the first BWP is activated (such as the number of times of switching to the first BWP), an activation gap (such as a gap between two-time switching to the first BWP, or a gap from one of M first BWPs to the next one of the M first BWPs, or a gap from a BWP state of a first BWP to the next BWP state of the first BWP).
Optionally, duration of each hop in the first time domain location information may be further used to indicate duration corresponding to a first BWP or corresponding to a BWP state.
Optionally, duration of multiple hops is the same.
Optionally, duration of first BWPs or BWP states is the same.
Optionally, the time domain configuration information may not include duration of each hop. In this case, the duration of a Hop may start from a starting time domain location of the Hop and end a period of time before a starting time domain location of the next Hop adjacent in time domain. This period of time may be a switching time of adjacent Hops, and may be determined by at least one of a protocol agreement, a network side indication, or a UE capability.
Optionally, duration of a first BWP or a BWP state can also be understood as starting from a starting time domain location of the first BWP or the BWP state and ending a period of time before a starting time domain location of the next BWP or the next BWP state adjacent in time domain.
Optionally, the starting time domain location of the hop may be an offset or an absolute time relative to a time domain reference point.
The time domain reference point may be one of the following:
Optionally, the starting time domain location of the first Hop is an offset or an absolute time relative to a time domain reference point.
Optionally, a relative time domain offset between multiple hops is the same, that is, the multiple hops have an equal gap therebetween. A UE may calculate a starting time domain location or an ending time domain location of each Hop based on the gap and the starting time domain location or the ending time domain location of the first Hop.
Optionally, starting time domain locations of adjacent hops in time domain have a same gap.
In an implementation, with the starting time domain location of the first Hop as a time domain reference point and the gap as a granularity, a time offset of the starting time domain location of each Hop relative to the time domain reference point is Y*gap. Y and/or the gap is indicated by a protocol agreement or the network side. Optionally, Y is the same as the Hop ID.
Optionally, the absolute time is, for example, a universal time coordinated (Universal Time Coordinated, UTC).
Optionally, the starting time domain location or the ending time domain location relative to the previous Hop is a starting time domain location or an ending time domain location of a repetition of the previous Hop, or a starting time domain location or an ending time domain location after all repetitions of the previous Hop are added up.
Optionally, the first period in the frequency hopping information is determined by one of the following manners:
In an implementation, the first period may be determined based on the second period.
In another implementation, the third period may be determined based on the first period.
In another implementation, the first period may be determined based on the third period.
Optionally, the first repetition configuration information in the frequency hopping information includes at least one of the following:
It should be noted that repeated hops have a same Hop ID and correspond to a same narrowband.
The repetition configuration of Hops can also be understood as a repetition configuration of the first BWP, and the first repetition configuration information may also be used to indicate at least one of the following:
It should be noted that repeated first BWPs have a same BWP ID or state ID, and correspond to a same narrowband.
Optionally, multiple hops have a same repetition configuration.
Optionally, the first indication information or the first activation information includes time domain candidate window information, and the time domain candidate window information is used to indicate a candidate time domain location corresponding to each hop or each first BWP. This can ensure that the terminal completes the SRS frequency hopping transmission on the N hops in a time domain candidate window.
The time domain candidate window information includes at least one of the following:
In an implementation, in a case that a frequency domain position of each first BWP and/or a frequency domain position corresponding to each BWP state is fixed, flexibility of the configuration can be increased through time domain candidate window information included in the first indication information or the first activation information.
Optionally, a numerical value of the BWP identifier or state identifier may be set based on actual requirements, and is, for example, 0 to N−1.
Optionally, when a BWP identifier or state identifier is 0, it indicates a time domain candidate window earliest in time domain location.
Optionally, BWP identifiers or state identifiers are sequentially arranged in ascending order to indicate a time sequence of time domain candidate windows.
Optionally, the frequency hopping sequence of the first BWPs is determined by one of the following manners:
A1. Indicating adjacent first BWPs, including a BWP identifier indicating a previous or next first BWP of a current first BWP, or a state identifier indicating a previous or next BWP state of a current BWP state.
The previous BWP identifier or state identifier is used to indicate being (or switching) from a specific first BWP or BWP state to the current first BWP; and the next BWP identifier or state identifier is used to indicate being (or switching) from the current first BWP or BWP state to the next first BWP or BWP state.
A2. An indicated frequency hopping sequence, which may include a frequency hopping sequence of first BWPs or BWP states. An indication manner of the frequency hopping sequence may include:
A3. A frequency hopping sequence agreed in a protocol.
In an implementation, the frequency hopping sequence of first BWPs or BWP states is related to the number of the first BWPs or the BWP states. The protocol stipulates the frequency hopping sequence in the case of different numbers.
In another implementation, the frequency hopping sequence of first BWPs or BWP states may be determined based on frequency domain positions, for example, in ascending order or descending order.
Optionally, the frequency hopping sequence of the first BWPs is a relative sequence or an absolute sequence.
In a case that the frequency hopping sequence is an absolute sequence, a first BWP or BWP state with a sequence being 1 indicates an initial first BWP or initial BWP state of the UE, and the first BWPs or BWP states are sequentially switched in the absolute sequence. In a case that the frequency hopping sequence is a relative sequence, a first BWP or BWP state with a sequence being 1 does not represent an initial first BWP or initial BWP state of the UE, but may start from any first BWP or BWP state, and then the first BWPs or BWP states are sequentially switched in the absolute sequence. Alternatively, based on the relative sequence, the UE can obtain a position of a previous/next first BWP or BWP state of a first BWP or BWP state.
Optionally, in a case that the frequency hopping sequence is a relative sequence, the switching sequence of the first BWPs or BWP states is a cyclic sequence.
For example, switching is performed between four first BWPs or BWP states, and the frequency hopping sequence is {0, 2, 3, 1}. If the UE starts frequency hopping from the first BWP or BWP state with an ID being 3, an actual frequency hopping sequence is {3, 1, 0, 2}. If the UE starts frequency hopping from the first BWP or BWP state with an ID being 1, an actual frequency hopping sequence is {1, 0, 2, 3}.
Optionally, the first activation information in the frequency hopping information further includes at least one of the following:
Optionally, the indication of a first BWP corresponding to initial frequency hopping is used to indicate the terminal to start frequency hopping from the indicated first BWP or BWP state.
In an implementation, the first BWP corresponding to the initial frequency hopping may be indicated by a BWP ID.
In an implementation, all first BWPs or BWP states are activated by default. That is, starting from the indicated first BWP or BWP state, frequency hopping is performed among all the first BWPs or BWP states.
In an implementation, the UE can obtain an actual frequency hopping sequence based on the indication of the first BWP corresponding to initial frequency hopping, with reference to a protocol-predefined relative frequency hopping sequence or a relative frequency hopping sequence of the network side device.
The list of the activated first BWPs is used to indicate the activated first BWPs or BWP states, and the terminal may perform frequency hopping based on the activated first BWPs or BWP states.
Optionally, the list of the activated first BWPs may be expressed as an ID list of first BWPs, and each ID corresponds to one first BWP or BWP state.
Optionally, the ID list contains at least one first BWP or BWP state, and when only one first BWP is included, only one first BWP is activated.
Optionally, first activation or indication information may be carried by at least one of a radio resource control (Radio Resource Control, RRC) message, a medium access control control element (Medium Access Control Control Element, MAC CE) message, and a downlink control information (Downlink Control Information, DCI) message.
Optionally, the first activation information is further used to indicate switching from a currently activated BWP (active BWP or active DL BWP) to the first BWP.
Optionally, the switching from a currently activated BWP to the first BWP includes: switching from the currently activated BWP to a first BWP nearest in frequency domain position, or a first BWP indicated by the first activation information, or a first BWP determined by a protocol and agreement.
There may be a plurality of manners of determining the first BWP nearest in frequency domain position, and the embodiment of this application only provides a few determining conditions:
Condition 1. A first BWP with a maximum overlapping range is selected from first BWPs that overlap the currently activated BWP.
Condition 2. If there are a plurality of first BWPs selected based on condition 1, one is arbitrarily selected from the plurality of selected first BWPs, or a first BWP with a lowest or highest frequency domain position or an activated first BWP is selected from the plurality of selected first BWP.
Condition 3. If no first BWP is not selected based on condition 1, a first BWP whose center frequency is closest to that of the currently activated BWP is selected.
Condition 4. If there are a plurality of first BWPs selected based on condition 3, one is arbitrarily selected from the plurality of selected first BWPs, or a first BWP with a lowest or highest frequency domain position or an activated first BWP is selected from the plurality of selected first BWP.
Optionally, the first mapping mode includes at least one of the following:
Optionally, under the mapping rule based on the association period, a plurality of second periods are associated with one third period, or the plurality of second periods are associated with one first period. For example, the first BWP1 is in the first second period, and the first BWP2 is in the second second period. If there are four first BWPs to be switched, the association period is at least four times that of the second period. For example, the first hop is in the first second period, and the second hop is in the second second period. If the frequency hopping include 4 hops, the association period is at least four times that of the second period.
Optionally, in the association period, in a case that the first BWPs in the third period are discarded, or that the hops in the first period are discarded, so that an SRS cannot map to all first BWPs or all hops, the association period supports use of an extension manner, or the association period is discarded.
For example, if the second period is 10 ms and the frequency hopping includes 4 hops, the association period may include four second periods as described above, which are denoted as Oct. 10, 2010-10. If one hop is discarded in the next association period, a corresponding association period is denoted as 10-10-x-10-10, where x denotes the discarded hop and is not denoted in the association period. It can be seen that the mapping mode becomes 90 ms, which may cross a 1024SFN boundary. The extension manner should be used to extend 10-10-x-10-10 to 10-10-x-10-10-10-10-10, where the last three 10s are also-ran, with no mapping being performed.
Optionally, in the mapping mode based on resources and/or repetition information of the SRS, one second period is associated with a plurality of third periods or a plurality of first periods; and/or each SRS resource corresponds to a plurality of first BWPs. For example, if the number of hops is 2 and each resource has a plurality of symbols, the intra-slot (intra-slot) first BWP switching can be performed.
Optionally, the mapping mode based on resources and/or repetition information of the SRS includes: a mapping mode based on the number of symbols and/or the number of repetitions of the SRS resources.
Optionally, in a case that the number of repetitions is 1, the frequency hopping is intra-slot frequency hopping.
In an implementation, if the frequency hopping is only related to the number of symbols of the SRS resources, the frequency hopping can be understood as intra-slot frequency hopping.
For example, a number Ns of symbols occupied by the SRS resources may be configured as 1 to 14, and if the number of repetitions is R=1, one symbol may indicate one hop. If a switching time of the first BWP is considered, the number of symbols of each hop may need to be greater than 1.
Optionally, in a case that a number R of repetitions is greater than 1, the number of intra-slot frequency hopping groups is one of:
Optionally, the number of intra-slot frequency hopping groups may be 2, 4, or the like.
Optionally, the number of intra-slot frequency hopping groups may be predefined by a protocol, preconfigured by the network side, or indicated by the network side.
Optionally, the number of intra-slot frequency hopping groups=Ns/R.
Optionally, the number of intra-slot frequency hopping groups=Ns/number of symbols corresponding to each hop.
A switching time (switch time) between hops or between first BWPs for the frequency hopping, and a corresponding priority and collision rule.
Optionally, a time domain gap between adjacent hops in time domain is greater than or equal to a first gap threshold d, or
Optionally, a unit of d is at least one of symbol, slot, subframe, Ts, Tc, s, ms, us, and ns.
Optionally, in a case that the unit of the first gap threshold is symbol or slot, an SCS associated with the first gap threshold is consistent with an SCS of at least one of the current following of the terminal:
Optionally, the terminal does not perform target communication behavior during frequency hopping switching by the terminal or under the first BWPs, where the target communication behavior includes at least one of the following:
A frequency hopping switching period t1 may include a time when a Hop is in progress, and a time before the Hop and/or a time after the Hop. A unit of t1 is at least one of symbol, slot, subframe, Ts, Tc, s, ms, us, and ns. When the unit is symbol or slot, an associated SCS is consistent with a current BWP or SRS of the terminal.
A period t2 under the first BWP may be an activation period of a first BWP or BWP state, and a time before and/or a time after activation of the first BWP or BWP state. A unit of t2 is at least one of symbol, slot, subframe, Ts, Tc, s, ms, us, and ns. When the unit is symbol or slot, an associated SCS is consistent with a current BWP or SRS of the terminal.
Optionally, during a period in which the terminal sends the sounding reference signal, during frequency hopping switching by the terminal, or under the first BWPs, the terminal sends no SRS or does not switch to the BWPs in a case that the terminal overlaps or collides with a downlink signal and/or a downlink channel, and/or overlaps or collides with an uplink signal and/or an uplink channel. The SRS transmission period is an entire transmission period including duration of multiple hops and a Hop switching time.
In an implementation, if duration and/or a Hop switching time of a Hop overlaps or collides with another DL signal or channel, and/or a UL signal or channel, the UE is not desired to switch to the Hop.
In another implementation, if duration, an activation period and/or a switching time of a first BWP overlaps or collides with another DL signal or channel, and/or a UL signal or channel, the UE is not desired to switch to the first BWP.
Optionally, during a period in which the terminal sends the SRS, during frequency hopping switching by the terminal, or under the first BWPs, the terminal sends no sounding reference signal, or does not switch to the first BWPs, or abandons a second period of the SRS to enter an association period, in a case that the terminal overlaps or collides with an SSB.
For example, the SRS period is 10 ms, and the number of hops is 4. In this case, Oct. 10, 2010-10 is the first association period, and then 10-10-x-10-10 should be the second period, but x may be excluded and not denoted into the second period of the association period due to overlapping or collision with an SSB.
The terminal cannot completely send the SRS on all hops or narrowbands. Optionally, for a same SRS resource, in a case that the terminal cannot send the SRS on at least one hop, the terminal discards SRS transmission on all hops, which can also be understood as discarding all SRS frequency hopping transmissions.
Optionally, for the same SRS resource, in a case that the terminal cannot send the SRS on a Hop, the terminal may continue to send the SRS on other hops.
Optionally, for the same SRS resource, in a case that different hops are associated with different Tx timing error groups (Tx Time Error Groups, TX TEGs), the terminal reports the Tx timing error groups,
Optionally, before that a terminal obtains first information, the method further includes:
The switching time of the intra-band frequency hopping can also be understood as a switching time of intra-band first BWPs, which is used to indicate a switching time when two first BWPs are in a same band, a same carrier (Carrier), or a same control channel (Control Channel, CC).
The switching time of the inter-band frequency hopping can also be understood as a switching time of inter-band first BWPs, which is used to indicate a switching time when two first BWPs are in different bands, different carriers (Carriers), or different control channels (Control Channels, CCs).
The switching time of the inter-band frequency hopping may include at least one of the following:
Optionally, a unit of the switching time may include, but is not limited to, one of Ts, Tc, symbol, slot, CP, ms, us, and s.
Optionally, before obtaining frequency hopping information and/or configuration information of first BWPs, the terminal may request a network side device (gNB) to obtain the frequency hopping information and/or the configuration information of the first BWPs.
Optionally, before obtaining first activation information, the terminal requests the network side device to obtain activation information of the frequency hopping.
Optionally, the network side device may obtain the first information through information interaction with a location server, such as an LMF, specifically including:
The network side device receives at least one of the following indication information from the location server:
The embodiment of this application further gives the following several examples of SRS transmission manners.
The terminal needs to transmit four SRS resources: R1, R2, R3, and R4, where two resources are transmitted in one slot, and the SRS resources are repeated for 4 times.
Scheme 1: Resource sweeping (resource sweeping) is performed first, and then resource repetition is performed.
If the terminal does not send an SRS with frequency hopping, the sending process is shown in
If the terminal sends an SRS by inter-slot frequency hopping and the number of hops is 2, the sending process is shown in
Scheme 2: Inter-slot repetition (inter-slot repetition) is performed first, and then resource switching is performed.
If the terminal does not send an SRS with frequency hopping, the sending process is shown in
If the terminal sends an SRS by inter-slot frequency hopping and the number of hops is 2, the sending process is shown in
Scheme 3: Intra-slot repetition (intra-slot repetition) is performed first, and then resource switching is performed.
If the terminal does not send an SRS with frequency hopping and performs inter-slot repetition, the sending process is shown in
If the terminal does not send an SRS with frequency hopping and performs inter-slot repetition, the sending process is shown in
If the terminal sends an SRS by intra-slot frequency hopping and the number of hops is 2, the switching time occupies (punctures) several symbols. In a case that the symbol occupation by the switching time is not considered, if no inter-slot repetition is performed, the sending process is shown in
Scheme 4: On the basis of the scheme 1, a symbol S0 occupied by a switching time is considered.
If the terminal does not send an SRS with frequency hopping, the sending process is shown in
If the terminal sends an SRS by intra-slot frequency hopping and the number of hops is 2, the sending process is shown in
If the terminal sends an SRS by inter-slot frequency hopping and the number of hops is 2, the sending process is shown in
When the terminal performs intra-slot frequency hopping, switching of Symbol level is highly likely to cause some symbols occupied by the SRS to be disconnected from the middle. Therefore, if the capability of the UE only supports a slot level buffer (slot level buffer), then during slot level switching, these slots should be avoided. The number of symbols for each hop is required be greater than 1.
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the frequency hopping is flexibly configured by obtaining the frequency hopping information, the first indication information, and the first activation information, to cause the terminal to send an SRS by the frequency hopping, so that an effective bandwidth for the SRS can be increased and accuracy of positioning measurement can be improved.
In the reference signal sending method according to the embodiment of this application, an execution subject may be a reference signal sending apparatus. The reference signal sending apparatus according to the embodiment of this application is described with an example in which the reference signal sending apparatus performs the reference signal sending method in the embodiment of this application.
As shown in
The receiving module 1901 is configured to obtain first information; and the sending module 1902 is configured to send, on M first bandwidth parts BWPs, a sounding reference signal for positioning with frequency hopping based on the first information, where the frequency hopping includes N hops, each hop corresponds to a different narrowband, and M and N are positive integers.
Optionally, the first information includes at least one of the following:
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the sounding reference signal for positioning is sent on the M first BWPs with frequency hopping based on the obtained first information, so that an effective bandwidth for the SRS can be increased and accuracy of positioning measurement can be improved.
Based on the above-mentioned embodiment, optionally, the first indication information includes at least one of the following:
Optionally, the set information of the first BWP set includes at least one of the following:
Optionally, in a case that one first BWP corresponds to multiple hops, the first indication information includes at least one of the following:
Optionally, the configuration information of the multiple hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information of each of the hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information and/or bandwidth information of each of the multiple hops corresponding to the first BWP satisfies at least one of the following:
Optionally, the multiple hops corresponding to the first BWP are associated with state information of the BWP states, where each BWP state is a state of the first BWP, and the state information of the BWP state is used to indicate the configuration information of the first BWP in the BWP state. Each BWP state corresponds to one hop, or each BWP state corresponds to multiple hops.
Optionally, in a case that each BWP state corresponds to multiple hops, state information of the BWP state includes at least one of a frequency domain offset or bandwidth information of the BWP state,
Optionally, the configuration information of the M first BWPs includes at least one of the following:
Optionally, the reference signal sending apparatus performs or does not perform one or more of the following operations on the M first BWPs:
Optionally, the frequency hopping information includes at least one of the following:
Optionally, the number N of the hops is the number of narrowbands;
Optionally, the first frequency domain position information includes at least one of the following:
Optionally, the bandwidth and/or the initial frequency domain position of the hop is determined by at least one of the following:
Optionally, the bandwidth and/or the initial frequency domain position of the hop is determined by the bandwidth and/or the initial frequency domain position of the first BWP corresponding to the hop, including at least one of the following:
Optionally, the bandwidth and/or the initial frequency domain position of each hop satisfies at least one of the following:
Optionally, the first time domain location information includes at least one of the following:
Optionally, the first time domain location information is determined by at least one of the following:
Optionally, that the first time domain location information is determined by time domain location information of the sounding reference signal includes:
Optionally, the first time domain location information satisfies at least one of the following:
Optionally, the activation information and/or the configuration information of the first BWP includes at least one of the following:
Optionally, the first time domain location information is used to determine activation information or an activation length of the first BWP.
Optionally, the first period is determined by one of the following manners:
Optionally, the first repetition configuration information includes at least one of the following:
Optionally, the first indication information or the first activation information includes time domain candidate window information, and the time domain candidate window information is used to indicate a candidate time domain location corresponding to each hop or each first BWP,
Optionally, the first activation information further includes at least one of the following:
Optionally, the frequency hopping sequence of the first BWPs is determined by one of the following manners:
Optionally, the first activation information is further used to indicate switching from a currently activated BWP to the first BWP.
Optionally, the switching from a currently activated BWP to the first BWP includes: switching from the currently activated BWP to a first BWP nearest in frequency domain position, or a first BWP indicated by the first activation information, or a first BWP determined by a protocol and agreement.
Optionally, the first mapping mode includes at least one of the following:
Optionally, a plurality of second periods are associated with one third period, or the plurality of second periods are associated with one first period.
Optionally, in a case that the first BWPs in the third period are discarded, or that the hops in the first period are discarded, the association period supports use of an extension manner, or the association period is discarded.
Optionally, in the mapping mode based on resources and/or repetition information of the SRS, one second period is associated with a plurality of third periods or a plurality of first periods; and/or each SRS resource corresponds to a plurality of first BWPs.
Optionally, the mapping mode based on resources and/or repetition information of the SRS includes: a mapping mode based on the number of symbols and/or the number of repetitions of the SRS resources.
Optionally, in a case that the number of repetitions is 1, the frequency hopping is intra-slot frequency hopping.
Optionally, in a case that the number of repetitions is greater than 1, the number of intra-slot frequency hopping groups is one of:
Optionally, a time domain gap between adjacent hops in time domain is greater than or equal to a first gap threshold,
Optionally, in a case that the unit of the first gap threshold is symbol or slot, an SCS associated with the first gap threshold is consistent with an SCS of at least one of the current following of the reference signal sending apparatus:
Optionally, the reference signal sending apparatus does not perform target communication behavior during frequency hopping switching by the reference signal sending apparatus or under the first BWPs, where the target communication behavior includes at least one of the following:
Optionally, during a period in which the reference signal sending apparatus sends the sounding reference signal, during frequency hopping switching by the reference signal sending apparatus, or under the first BWPs, the reference signal sending apparatus sends no SRS or does not switch to the BWPs in a case that the reference signal sending apparatus overlaps or collides with a downlink signal and/or a downlink channel, and/or overlaps or collides with an uplink signal and/or an uplink channel.
Optionally, during a period in which the reference signal sending apparatus sends the SRS, during frequency hopping switching by the reference signal sending apparatus, or under the first BWPs, the reference signal sending apparatus sends no sounding reference signal, or does not switch to the first BWPs, or abandons a second period of the SRS to enter an association period, in a case that the reference signal sending apparatus overlaps or collides with an SSB.
Optionally, for a same SRS resource, in a case that the reference signal sending apparatus cannot send the SRS on at least one hop, the sending module 1902 discards SRS transmission on all hops,
Optionally, the sending module 1902 is further configured to report a frequency hopping related capability of the reference signal sending apparatus, and the frequency hopping related capability includes at least one of the following:
Optionally, the frequency hopping related capability of the reference signal sending apparatus includes at least one of the following:
Optionally, the sending module 1902 is further configured to report a related capability of the first BWP, and the related capability of the first BWP includes at least one of the following:
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the frequency hopping is flexibly configured by obtaining the frequency hopping information, the first indication information, and the first activation information, to cause the reference signal sending apparatus to send an SRS by the frequency hopping, so that an effective bandwidth for the SRS can be increased and accuracy of positioning measurement can be improved.
The reference signal sending apparatus in the embodiment of this application may be an electronic device, such as an electronic device with an operating system, or a component such as an integrated circuit or a chip in the electronic device. The electronic device may be a terminal or another device other than the terminal. For example, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and the another device may be a server, a network attached storage (Network Attached Storage, NAS), or the like, which is not specifically limited in the embodiment of this application.
The reference signal sending apparatus according to the embodiment of this application can implement each process implemented in the method embodiment of
As shown in
Steps S2010 and S2020 can implement the method embodiment shown in
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the sounding reference signal for positioning is measured on the M first BWPs with the frequency hopping based on the obtained first information to obtain the positioning measurement result of the terminal, so that an effective bandwidth for the reference signal for positioning can be increased and accuracy of positioning measurement can be improved.
Optionally, the first indication information includes at least one of the following:
Optionally, the set information of the first BWP set includes at least one of the following:
Optionally, in a case that one first BWP corresponds to multiple hops, the first indication information includes at least one of the following:
Optionally, the configuration information of the multiple hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information of each of the hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information and/or bandwidth information of each of the multiple hops corresponding to the first BWP satisfies at least one of the following:
Optionally, the multiple hops corresponding to the first BWP are associated with state information of the BWP states, where each BWP state is a state of the first BWP, and the state information of the BWP state is used to indicate the configuration information of the first BWP in the BWP state. Each BWP state corresponds to one hop, or each BWP state corresponds to multiple hops.
Optionally, in a case that each BWP state corresponds to multiple hops, state information of the BWP state includes at least one of a frequency domain offset or bandwidth information of the BWP state,
Optionally, the configuration information of the M first BWPs includes at least one of the following:
Optionally, the frequency hopping information includes at least one of the following:
Optionally, the frequency domain position of the hop includes a bandwidth and/or an initial frequency domain position of the hop, and the bandwidth and/or the initial frequency domain position of the hop is determined by at least one of the following:
Optionally, the bandwidth and/or the initial frequency domain position of the hop is determined by the bandwidth and/or the initial frequency domain position of the first BWP corresponding to the hop, including at least one of the following:
Optionally, the first time domain location information is determined by at least one of the following:
Optionally, that the first time domain location information is determined by time domain location information of the sounding reference signal includes:
Optionally, the activation information and/or the configuration information of the first BWP includes at least one of the following:
Optionally, the first time domain location information is used to determine activation information or an activation length of the first BWP.
Optionally, the first indication information or the first activation information includes time domain candidate window information, and the time domain candidate window information is used to indicate a candidate time domain location corresponding to each hop or each first BWP,
Optionally, the first activation information further includes at least one of the following:
Optionally, the first mapping mode includes at least one of the following:
Optionally, a plurality of second periods are associated with one third period, or the plurality of second periods are associated with one first period.
Optionally, in a case that the first BWPs in the third period are discarded, or that the hops in the first period are discarded, the association period supports use of an extension manner, or the association period is discarded.
Optionally, in the mapping mode based on resources and/or repetition information of the SRS, one second period is associated with a plurality of third periods or a plurality of first periods; and/or each SRS resource corresponds to a plurality of first BWPs.
Optionally, the mapping mode based on resources and/or repetition information of the SRS includes: a mapping mode based on the number of symbols and/or the number of repetitions of the SRS resources.
Optionally, in a case that the number of repetitions is 1, the frequency hopping is intra-slot frequency hopping.
Optionally, in a case that the number of repetitions is greater than 1, the number of intra-slot frequency hopping groups is one of:
Optionally, before step S210, the method further includes:
The network side device receives a related capability of the first BWPs from the terminal, where the related capability of the first BWPs includes at least one of the following:
In the embodiment of this application, the method embodiment of the terminal side in the above-mentioned embodiment can be implemented to achieve the same technical effect, and the repeated parts are not repeated herein.
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the frequency hopping is flexibly configured by obtaining the frequency hopping information, the first indication information, and the first activation information, to cause the network side device to measure an SRS by the frequency hopping, so that an effective bandwidth for the SRS can be increased and accuracy of positioning measurement can be improved.
In the reference signal sending method according to the embodiment of this application, an execution subject may be a reference signal sending apparatus. The reference signal sending apparatus according to the embodiment of this application is described with an example in which the reference signal sending apparatus performs the reference signal sending method in the embodiment of this application.
As shown in
The obtaining module 2101 is configured to obtain first information; and the measurement module 2102 is configured to measure, on M first BWPs, a sounding reference signal for positioning with frequency hopping based on the first information to obtain a positioning measurement result of a terminal, where the frequency hopping includes N hops, each hop corresponds to a different narrowband, and M and N are positive integers.
Optionally, the first information includes at least one of the following:
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the sounding reference signal for positioning is measured on the M first BWPs with the frequency hopping based on the obtained first information to obtain the positioning measurement result of the terminal, so that an effective bandwidth for the reference signal for positioning can be increased and accuracy of positioning measurement can be improved.
Optionally, the first indication information includes at least one of the following:
Optionally, the set information of the first BWP set includes at least one of the following:
Optionally, in a case that one first BWP corresponds to multiple hops, the first indication information includes at least one of the following:
Optionally, the configuration information of the multiple hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information of each of the hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information and/or bandwidth information of each of the multiple hops corresponding to the first BWP satisfies at least one of the following:
Optionally, the multiple hops corresponding to the first BWP are associated with state information of the BWP states, where each BWP state is a state of the first BWP, and the state information of the BWP state is used to indicate the configuration information of the first BWP in the BWP state. Each BWP state corresponds to one hop, or each BWP state corresponds to multiple hops.
Optionally, in a case that each BWP state corresponds to multiple hops, state information of the BWP state includes at least one of a frequency domain offset or bandwidth information of the BWP state,
Optionally, the configuration information of the M first BWPs includes at least one of the following:
Optionally, the frequency hopping information includes at least one of the following:
Optionally, the frequency domain position of the hop includes a bandwidth and/or an initial frequency domain position of the hop, and the bandwidth and/or the initial frequency domain position of the hop is determined by at least one of the following:
Optionally, the bandwidth and/or the initial frequency domain position of the hop is determined by the bandwidth and/or the initial frequency domain position of the first BWP corresponding to the hop, including at least one of the following:
Optionally, the first time domain location information is determined by at least one of the following:
Optionally, that the first time domain location information is determined by time domain location information of the sounding reference signal includes:
Optionally, the activation information and/or the configuration information of the first BWP includes at least one of the following:
Optionally, the first time domain location information is used to determine activation information or an activation length of the first BWP.
Optionally, the first indication information or the first activation information includes time domain candidate window information, and the time domain candidate window information is used to indicate a candidate time domain location corresponding to each hop or each first BWP,
Optionally, the first activation information further includes at least one of the following:
Optionally, the first mapping mode includes at least one of the following: a mapping rule between hops and first BWPs;
Optionally, a plurality of second periods are associated with one third period, or the plurality of second periods are associated with one first period.
Optionally, in a case that the first BWPs in the third period are discarded, or that the hops in the first period are discarded, the association period supports use of an extension manner, or the association period is discarded.
Optionally, in the mapping mode based on resources and/or repetition information of the SRS, one second period is associated with a plurality of third periods or a plurality of first periods; and/or each SRS resource corresponds to a plurality of first BWPs.
Optionally, the mapping mode based on resources and/or repetition information of the SRS includes: a mapping mode based on the number of symbols and/or the number of repetitions of the SRS resources.
Optionally, in a case that the number of repetitions is 1, the frequency hopping is intra-slot frequency hopping.
Optionally, in a case that the number of repetitions is greater than 1, the number of intra-slot frequency hopping groups is one of:
Optionally, the obtaining module 2101 is further configured to receive a related capability of the first BWP from the terminal, and the related capability of the first BWP includes at least one of the following:
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the frequency hopping is flexibly configured by obtaining the frequency hopping information, the first indication information, and the first activation information, to cause the reference signal sending apparatus to measure an SRS by the frequency hopping, so that an effective bandwidth for the SRS can be increased and accuracy of positioning measurement can be improved.
The reference signal sending apparatus in the embodiment of this application may be an electronic device, such as an electronic device with an operating system, or a component such as an integrated circuit or a chip in the electronic device. The electronic device may be a terminal or another device other than the terminal. For example, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and the another device may be a server, a network attached storage (Network Attached Storage, NAS), or the like, which is not specifically limited in the embodiment of this application.
The reference signal sending apparatus according to the embodiment of this application can implement each process implemented in the method embodiment of
Optionally, as shown in
An embodiment of this application further provides a terminal, including a processor and a communication interface. The communication interface is configured to obtain first information, and send, on M first bandwidth parts BWPs, a sounding reference signal for positioning with frequency hopping based on the first information. The terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation of the above-mentioned method embodiment can be applied to the terminal embodiment, which can achieve the same technical effect. Specifically,
The terminal 2300 includes, but is not limited to, at least some components of a radio frequency unit 2301, a network module 2302, an audio output unit 2303, an input unit 2304, a sensor 2305, a display unit 2306, a user input unit 2307, an interface unit 2308, a memory 2309, and a processor 2310.
It can be understood by a person skilled in the art that the terminal 2300 may further include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 2310 by using a power management system, so as to achieve charging, discharging, power consumption management and other functions by using the power management system. The terminal structure shown in
It should be understood that in the embodiment of this application, the input unit 2304 may include a graphics processing unit (Graphics Processing Unit, GPU) 23041 and a microphone 23042. The GPU 23041 processes image data of a still image or video that is obtained by an image acquisition apparatus (for example, a camera) in a video acquisition mode or an image acquisition mode. The display unit 2306 may include a display panel 23061, and the display panel 23061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 2307 includes at least one of a touch panel 23071 and another input device 23072. The touch panel 23071 is also referred to as a touchscreen. The touch panel 23071 may include two parts: a touch detection apparatus and a touch controller. The another input device 23072 may include, but is not limited to, a physical keyboard, a functional key (such as a volume control key or an on/off key), a track ball, a mouse, and a joystick, which is not described in detail herein.
In the embodiment of this application, after receiving downlink data from a network side device, the radio frequency unit 2301 may transmit the data to the processor 2310 for processing. In addition, the radio frequency unit 2301 may send uplink data to the network side device. Generally, the radio frequency unit 2301 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, and a duplexer.
The memory 2309 may be configured to store a software program or instructions and various data. The memory 2309 may mainly include a first storage area for storing a program or instructions and a second storage area for storing data, where the first storage area may store an operating system, an application or instructions required for at least one function (such as a sound playing function and an image playing function), and the like. In addition, the memory 2309 may include a volatile memory or a non-volatile memory, or the memory 2309 may include both a volatile memory and a non-volatile memory. The non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), a static random access memory (Static RAM, SRAM), a dynamic random access memory (Dynamic RAM, DRAM), a synchronous dynamic random access memory (Synchronous DRAM, SDRAM), a double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), an enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), a synchronous link dynamic random access memory (Synch link DRAM, SLDRAM), and a direct rambus random access memory (Direct Rambus RAM, DRRAM). The memory 2309 in the embodiment of this application includes, but is not limited to, these and any other suitable types of memories.
The processor 2310 may include one or more processing units. Optionally, the processor 2310 integrates an application processor and a modem processor, where the application processor mainly processes operations involving an operating system, a user interface, an application program, and the like, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that, the modem processor may not be integrated into the processor 2310.
The radio frequency unit 2301 is configured to obtain first information; and send, on M first bandwidth parts BWPs, a sounding reference signal for positioning with frequency hopping based on the first information, where the frequency hopping includes N hops, each hop corresponds to a different narrowband, and M and N are positive integers.
Optionally, the first information includes at least one of the following:
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the sounding reference signal for positioning is sent on the M first BWPs with the frequency hopping based on the obtained first information, so that an effective bandwidth for the SRS can be increased and accuracy of positioning measurement can be improved.
Based on the above-mentioned embodiment, optionally, the first indication information includes at least one of the following:
Optionally, the set information of the first BWP set includes at least one of the following:
Optionally, in a case that one first BWP corresponds to multiple hops, the first indication information includes at least one of the following:
Optionally, the configuration information of the multiple hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information of each of the hops corresponding to the first BWP includes at least one of the following:
Optionally, the frequency domain position information and/or bandwidth information of each of the multiple hops corresponding to the first BWP satisfies at least one of the following:
Optionally, the multiple hops corresponding to the first BWP are associated with state information of the BWP states, where each BWP state is a state of the first BWP, and the state information of the BWP state is used to indicate the configuration information of the first BWP in the BWP state. Each BWP state corresponds to one hop, or each BWP state corresponds to multiple hops.
Optionally, in a case that each BWP state corresponds to multiple hops, state information of the BWP state includes at least one of a frequency domain offset or bandwidth information of the BWP state,
Optionally, the configuration information of the M first BWPs includes at least one of the following:
Optionally, the terminal performs or does not perform one or more of the following operations on the M first BWPs:
Optionally, the frequency hopping information includes at least one of the following:
Optionally, the number N of the hops is the number of narrowbands;
Optionally, the first frequency domain position information includes at least one of the following:
Optionally, the bandwidth and/or the initial frequency domain position of the hop is determined by at least one of the following:
Optionally, the bandwidth and/or the initial frequency domain position of the hop is determined by the bandwidth and/or the initial frequency domain position of the first BWP corresponding to the hop, including at least one of the following:
Optionally, the bandwidth and/or the initial frequency domain position of each hop satisfies at least one of the following:
Optionally, the first time domain location information includes at least one of the following:
Optionally, the first time domain location information is determined by at least one of the following:
Optionally, that the first time domain location information is determined by time domain location information of the sounding reference signal includes:
Optionally, the first time domain location information satisfies at least one of the following:
Optionally, the activation information and/or the configuration information of the first BWP includes at least one of the following:
Optionally, the first time domain location information is used to determine activation information or an activation length of the first BWP.
Optionally, the first period is determined by one of the following manners:
Optionally, the first repetition configuration information includes at least one of the following:
Optionally, the first indication information or the first activation information includes time domain candidate window information, and the time domain candidate window information is used to indicate a candidate time domain location corresponding to each hop or each first BWP,
Optionally, the first activation information further includes at least one of the following:
Optionally, the frequency hopping sequence of the first BWPs is determined by one of the following manners:
Optionally, the first activation information is further used to indicate switching from a currently activated BWP to the first BWP.
Optionally, the switching from a currently activated BWP to the first BWP includes: switching from the currently activated BWP to a first BWP nearest in frequency domain position, or a first BWP indicated by the first activation information, or a first BWP determined by a protocol and agreement.
Optionally, the first mapping mode includes at least one of the following:
Optionally, a plurality of second periods are associated with one third period, or the plurality of second periods are associated with one first period.
Optionally, in a case that the first BWPs in the third period are discarded, or that the hops in the first period are discarded, the association period supports use of an extension manner, or the association period is discarded.
Optionally, in the mapping mode based on resources and/or repetition information of the SRS, one second period is associated with a plurality of third periods or a plurality of first periods; and/or each SRS resource corresponds to a plurality of first BWPs.
Optionally, the mapping mode based on resources and/or repetition information of the SRS includes: a mapping mode based on the number of symbols and/or the number of repetitions of the SRS resources.
Optionally, in a case that the number of repetitions is 1, the frequency hopping is intra-slot frequency hopping.
Optionally, in a case that the number of repetitions is greater than 1, the number of intra-slot frequency hopping groups is one of:
Optionally, a time domain gap between adjacent hops in time domain is greater than or equal to a first gap threshold,
Optionally, in a case that the unit of the first gap threshold is symbol or slot, an SCS associated with the first gap threshold is consistent with an SCS of at least one of the current following of the terminal:
Optionally, the terminal does not perform target communication behavior during frequency hopping switching by the terminal or under the first BWPs, where the target communication behavior includes at least one of the following:
Optionally, during a period in which the terminal sends the sounding reference signal, during frequency hopping switching by the terminal, or under the first BWPs, the terminal sends no SRS or does not switch to the BWPs in a case that the terminal overlaps or collides with a downlink signal and/or a downlink channel, and/or overlaps or collides with an uplink signal and/or an uplink channel.
Optionally, during a period in which the terminal sends the SRS, during frequency hopping switching by the terminal, or under the first BWPs, the terminal sends no sounding reference signal, or does not switch to the first BWPs, or abandons a second period of the SRS to enter an association period, in a case that the terminal overlaps or collides with an SSB.
Optionally, for a same sounding reference signal resource, in a case that the terminal cannot send the sounding reference signal on at least one hop, the terminal discards SRS transmission on all hops,
Optionally, the radio frequency unit 2301 is further configured to report a frequency hopping related capability of the terminal, and the frequency hopping related capability includes at least one of the following:
Optionally, the frequency hopping related capability of the terminal includes at least one of the following:
Optionally, the radio frequency unit 2301 is further configured to report a related capability of the first BWP, and the related capability of the first BWP includes at least one of the following:
As can be seen from the technical solution of the above-mentioned embodiment, in the embodiment of this application, the frequency hopping is flexibly configured by obtaining the frequency hopping information, the first indication information, and the first activation information, to cause the terminal to send an SRS by the frequency hopping, so that an effective bandwidth for the SRS can be increased and accuracy of positioning measurement can be improved.
An embodiment of this application further provides a network side device, including a processor and a communication interface. The communication interface is configured to obtain first information, and the processor is configured to measure, on M first bandwidth parts, a sounding reference signal for positioning with frequency hopping based on the first information to obtain a positioning measurement result of a terminal. The network side device embodiment corresponds to the above-mentioned method embodiment for the network side device, and each implementation process and implementation of the above-mentioned method embodiment can be applied to the network side device embodiment, which can achieve the same technical effect.
Specifically, an embodiment of this application further provides a network side device. As shown in
The method performed by the network side device in the above embodiment can be implemented in the baseband apparatus 243. The baseband apparatus 243 includes a baseband processor.
For example, the baseband apparatus 243 may include at least one baseband board, and a plurality of chips are arranged on the baseband board. As shown in
The network side device may further include a network interface 246. The interface is, for example, a common public radio interface (common public radio interface, CPRI).
Specifically, the network side device 2400 according to the embodiment of the present invention further includes: instructions or a program that is stored in the memory 245 and runnable on the processor 244. The processor 244 invokes the instructions or the program in the memory 245 to perform the method performed by each module shown in
An embodiment of this application further provides a readable storage medium. A program or instructions are stored on the readable storage medium. The program or instructions, when executed by a processor, implement each process of the above-mentioned reference signal sending method embodiment, which can achieve the same technical effect. To avoid repetition, details are not described herein.
The processor is the processor in the terminal in the above-mentioned embodiment. The readable storage medium includes a computer-readable storage medium, such as computer read-only memory ROM, a random access memory RAM, a magnetic disk, or a compact disc.
An embodiment of this application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement each process of the above-mentioned reference signal sending method embodiment, which can achieve the same technical effect. To avoid repetition, details are not described herein.
It should be understood that the chip mentioned in the embodiment of this application may also be referred to as a system on chip, a system chip, a chip system, a system-on-a-chip, or the like.
An embodiment of this application further provides a computer program/program product. The computer program/program product is stored on a storage medium. The computer program/program product is executed by at least one processor to implement each process of the above-mentioned reference signal sending method embodiment, which can achieve the same technical effect. To avoid repetition, details are not described herein.
An embodiment of this application further provides a reference signal sending system, including: a terminal and a network side device. The terminal may be configured to perform the steps of the reference signal sending method as described above. The network side device may be configured to perform the steps of the method as described above.
It should be noted that herein, terms “including”, “comprising” or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase “including a . . . ” does not exclude the presence of an additional identical element in the process, method, article or apparatus including the element. In addition, it should be noted that the scope of the method and apparatus in the implementations of this application is not limited to performing functions in the order shown or discussed, but also may include performing functions in a substantially simultaneous manner or in a reverse order based on the functions involved. For example, the described method may be performed in an order different from that described, and various steps may be further added, omitted or combined. In addition, features described with reference to some examples can be combined in other examples.
By the description of the above implementations, a person skilled in the art can clearly understand that the method in the above-mentioned embodiments may be implemented by software and a necessary general-purpose hardware platform, or certainly, by hardware, but the former is a better implementation in many cases. Based on this understanding, the technical solution of this application essentially, or a part contributing to the prior art, may be embodied in a form of a computer software product. The computer software product is stored on a storage medium (for example, a ROM/RAM, a magnetic disk and a compact disc), and includes a plurality of instructions to cause a terminal (which may be a mobile phone, a computer, a server, an air-conditioner, a network device, or the like) to perform the method according to each embodiment of this application.
The embodiments of this application are described above with reference to the accompanying drawings, but this application is not limited to the specific implementations described above, and the specific implementations described above are merely illustrative and not restrictive. A person of ordinary skill in the art may further make many forms under the teaching of this application without departing from the purpose of this application and the protection scope of the claims, and these forms all fall within the protection scope of this application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202210935966.9 | Aug 2022 | CN | national |
This application is a continuation of International Patent Application No. PCT/CN2023/110225, filed on Jul. 31, 2023, which claims priority to Chinese patent application No. 202210935966.9, filed with the China National Intellectual Property Administration on Aug. 4, 2022 and entitled “REFERENCE SIGNAL SENDING METHOD AND APPARATUS, TERMINAL, AND NETWORK SIDE DEVICE”, both of which are incorporated herein by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/110225 | Jul 2023 | WO |
| Child | 19037208 | US |
