Patent Application
20230397184
This application claims the priority of Chinese Application No. 202011112946.9, filed on Oct. 16, 2020, the disclosure of which is incorporated in its entirety by reference herein.
The present disclosure relates to the field of communication technologies, and in particular to a measurement configuration method, a measurement method, a network device and a terminal.
At present, for a downlink positioning reference signal (PRS), a user equipment (UE, or referred as a terminal) is only allowed to process a periodic PRS within a measurement gap. However, there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap. If the aperiodic downlink PRS or semi-persistent downlink PRS is measured within a periodically configured measurement gap, there may be following problems: in case that the aperiodic downlink PRS or semi-persistent downlink PRS does not fall within a time range of the periodic measurement gap, the UE cannot process the downlink PRS; or, since the current measurement gap occurs periodically and a minimum period is 20 ms, the UE needs to wait for the measurement gap, resulting in that positioning delay is limited by the period of measurement gap, which cannot meet requirements of low positioning delay.
The present disclosure provides a measurement configuration method, a measurement method, a network device and a user equipment (UE), which can solve the problem that there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap.
In order to achieve the above object, embodiments of the present disclosure are achieved as follows.
According to a first aspect, one embodiment of the present disclosure provides a measurement configuration method, performed by a network device, including:
Optionally, the method further includes:
Optionally, a time unit of the target measurement gap is associated with the UE positioning measurement capability information reported by the UE;
Optionally, configuring for the UE, the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS, includes:
Optionally, the transmitting the configuration parameter of the target measurement gap to the UE, includes:
Optionally, in case that the target measurement gap is the aperiodic measurement gap for the aperiodic downlink PRS, the transmitting the configuration parameter of the target measurement gap to the UE, includes:
Optionally, in case that the target measurement gap is the semi-persistent measurement gap for the semi-persistent downlink PRS, the transmitting the configuration parameter of the target measurement gap to the UE, includes:
Optionally, the method further includes:
Optionally, the UE positioning measurement capability information includes at least one of the following:
According to a second aspect, one embodiment of the present disclosure provides a network device, including: a transceiver, a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor executes the program to perform:
configuring for a user equipment (UE), a target measurement gap for an aperiodic downlink PRS or a semi-persistent downlink PRS; wherein the target measurement gap is an aperiodic measurement gap or a semi-persistent measurement gap.
Optionally, the processor executes the program to perform:
Optionally, a time unit of the target measurement gap is associated with the UE positioning measurement capability information reported by the UE;
the time unit of the target measurement gap is sub-frame, slot, or orthogonal frequency division multiplexing (OFDM) symbol.
Optionally, the processor executes the program to perform:
Optionally, the processor executes the program to perform:
Optionally, in case that the target measurement gap is the aperiodic measurement gap for the aperiodic downlink PRS, the processor executes the program to perform:
Optionally, in case that the target measurement gap is the semi-persistent measurement gap for the semi-persistent downlink PRS, the processor executes the program to perform:
Optionally, the processor executes the program to perform:
Optionally, the UE positioning measurement capability information includes at least one of the following:
According to a third aspect, one embodiment of the present disclosure provides a network device, including:
According to a fourth aspect, one embodiment of the present disclosure provides a readable storage medium, including: a program stored thereon, wherein the program is executed by a processor to implements steps of the above measurement configuration method.
According to a fifth aspect, one embodiment of the present disclosure provides a measurement method, performed by a user equipment (UE), including:
Optionally, obtaining the target measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS, which is configured by the network device for the UE, includes:
Optionally, receiving the configuration parameter of the target measurement gap transmitted by the network device, includes:
Optionally, receiving the configuration parameter of the target measurement gap transmitted by the network device, includes:
Optionally, receiving the configuration parameter of the target measurement gap transmitted by the network device, includes:
Optionally, the method further includes:
Optionally, in case of obtaining a target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, the performing downlink PRS reception and measurement according to the target measurement gap includes:
Optionally, the method may further include: transmitting UE positioning measurement capability information to the network device.
Optionally, in case that the positioning measurement capability information includes: in the same sub-frame or slot, whether UE is able to simultaneously perform positioning measurement and downlink processing, determining the target measurement gap according to the UE positioning measurement capability information, includes:
Optionally, the valid condition includes:
Optionally, in case that the UE positioning measurement capability information includes: whether the UE is able to simultaneously perform positioning measurement and downlink processing in a downlink active bandwidth part, in different bandwidth parts of the same frequency band or in different frequency bands, performing downlink PRS reception and measurement according to the target measurement gap, includes:
According to a sixth aspect, one embodiment of the present disclosure provides a user equipment (UE), including: a transceiver, a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor executes the program to perform:
Optionally, the processor executes the program to perform:
Optionally, the processor executes the program to perform:
Optionally, the processor executes the program to perform:
Optionally, the processor executes the program to perform:
Optionally, the processor executes the program to perform:
Optionally, in case of obtaining a target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, the processor executes the program to perform:
Optionally, the processor executes the program to perform: transmitting UE positioning measurement capability information to the network device.
Optionally, in case that the positioning measurement capability information includes: in the same sub-frame or slot, whether UE is able to simultaneously perform positioning measurement and downlink processing, the processor executes the program to perform:
Optionally, the valid condition includes:
Optionally, in case that the UE positioning measurement capability information includes: whether the UE is able to simultaneously perform positioning measurement and downlink processing in a downlink active bandwidth part, in different bandwidth parts of the same frequency band or in different frequency bands, the processor executes the program to perform:
According to a seventh aspect, one embodiment of the present disclosure provides a user equipment (UE), including:
According to an eighth aspect, one embodiment of the present disclosure provides a readable storage medium, including: a program stored thereon, wherein the program is executed by a processor to implements steps of the above measurement method.
The beneficial effects of the above technical scheme of the present disclosure are as following. The target measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS is configured for the UE by a network device, which can solve the problem that there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap; and which can further avoid the problem that for processing an aperiodic downlink PRS or semi-persistent downlink PRS within a periodic measurement gap, the UE cannot process the downlink PRS, or the problem of not being able to meet requirements of low positioning delay, that is, the positioning delay can be reduced.
In order to make the technical problems to be solved, the technical solutions and the advantages of the present disclosure more apparent, the present disclosure will be described hereinafter in conjunction with the drawings and embodiments. In the following descriptions, to facilitate understanding embodiments of the present disclosure, specific configurations and specific details of components are provided. Thus, persons having ordinary skill in the art should understand that, various changes and modifications may be made to the embodiments described here, without departing from scope and spirit of the present disclosure. In addition, for clarity and simplicity, descriptions about known functions and constructions are omitted.
It should be understood that, the phrase “one embodiment” or “an embodiment” as used throughout the specification means that a particular feature, structure, or characteristic relating to an embodiment is included in at least one embodiment of the present disclosure. Thus, “in one embodiment” or “in an embodiment” as used throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present disclosure, it should be understood that, the sequence numbers of the following processes do not imply the order of execution. The order of execution of each process should be determined by its function and internal logic, which should not constitute any limitation to the implementation processes of the embodiments of the application.
In addition, the terms “system” and “network” are often used interchangeably herein.
In the embodiments of the present disclosure, it should be understood that “B corresponding to A” means that B is associated with A, and B may be determined based on A. However, it should also be understood that determining B based on A does not mean that B is only determined based on A, and B may also be determined based on A and/or other information.
In the embodiments of the present disclosure, forms of access network are not limited, and may include access network of a macro base station, a pico base station, a node B (the name of the 3G mobile base station), an enhanced node B (eNB), a gNB (the name of the 5G mobile base station), a femto eNB or a home eNode B or a Home eNB or an HeNB, a relay station, an access point (AP), a remote radio unit (RRU), a remote radio head (RRH). A user equipment may be a mobile phone (or cellphone), or another device which is capable of transmitting and receiving a wireless signal, including a UE, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop, a cordless phone, a wireless local loop (WLL) station, a customer premise equipment which is capable of converting a mobile signal into a WiFi signal, or a mobile smart hotspot, a smart appliance, or another device which may spontaneously communicate with a mobile communication network without a human operation, and so on.
Optionally, in embodiments of the present disclosure, a PRS may represent each reference signal that can be used to measure time of arrival (TOA). For example, the PRS may include PRS for traditional downlink time difference of arrival (DL-TDOA) positioning, channel state information reference signal (CSI-RS), etc.
Meanings of technical terms in the application are explained in the following.
A downlink PRS resource is defined as a resource element (RE) set used for downlink PRS transmission. In time domain, the RE set may include one or more consecutive symbols in one slot.
A downlink PRS resource set is a set of downlink PRS resources of a same TRP. Each downlink PRS resource in the downlink PRS resource set is associated with a single spatial transmit filter (i.e., transmit beam) transmitted by a single TRP. One TRP may be configured with one or two downlink PRS resource sets. Whether UE supports configuration of two downlink PRS resource sets depends on UE capability.
A downlink PRS positioning frequency layer is a collection of downlink PRS resource sets with the same SCS, CP type, Point A, PRS bandwidth and starting PRB position across one or multiple TRPs.
Optionally, for a periodic downlink PRS, a value range of a downlink PRS resource period is: {4, 8, 16, 32, 64, 5, 10, 20, 40, 80, 160, 320, 640, 1280, 2560, 5120, 10240}2μ slots, where μ={0, 1, 2, 3}, which are corresponding to PRS subcarrier spacings of {15, 30, 60, 120} kHz, respectively.
NR PRS configuration and bandwidth part (BWP) configuration are independent of each other, that is, the NR PRS configuration is not constrained by bandwidth in the BWP configuration. All downlink PRS resource sets in the same downlink PRS positioning frequency layer have the same downlink PRS bandwidth and initial PRB value. A granularity of the downlink PRS starting PRB parameter is 1, and the downlink PRS starting PRB parameter has a minimum value of 0 and a maximum value of 2176. The downlink PRS bandwidth is configured with a granularity of 4PRB, and a maximum value of the downlink PRS bandwidth depends on UE's capability for processing the downlink PRS bandwidth reported by the UE to the network, and the downlink PRS bandwidth is not less than 24 PRBs.
In case that the UE is not configured with a measurement gap, the UE does not expect to perform processing of PRS reception and measurement. In case that the UE is configured with a measurement gap, within the configured measurement gap, the UE may measure PRS resources in an activated downlink BWP with the same or different subcarrier spacings as the activated downlink BWP, or measure downlink PRS resources outside the activated downlink BWP (including intra-frequency or inter-frequency). According to needs, the UE applies for the measurement gap through RRC signaling. During the measurement gap, the UE does not process other downlink physical channels and signals.
For periodic downlink PRS, two types of measurement gaps are defined: UE-based (per-UE) measurement gap and frequency range (FR)-based (per-FR) measurement gap; measurement gap length (MGL) and measurement gap repetition period (MGRP) in 24 measurement gap patterns are provided as shown in the following Table 1. All measurement gaps are configured periodically.
Specifically, one embodiment of the present disclosure provides a measurement configuration method, which solves the problem that there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap.
As shown in
Step 11: configuring for a user equipment (UE), a target measurement gap for an aperiodic downlink PRS or a semi-persistent downlink PRS.
The target measurement gap is an aperiodic measurement gap or a semi-persistent measurement gap.
Optionally, the target measurement gap for the aperiodic downlink PRS is an aperiodic measurement gap, and the target measurement gap for the semi-persistent measurement gap is a semi-persistent measurement gap.
Optionally, the measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS may be a measurement gap dedicated to positioning, that is, the measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS occupies a different time resource from a current measurement gap used for other purposes; or, the measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS and the current measurement gap used for other purposes may also multiplex the same time resource.
In the embodiment of the present disclosure, the target measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS is configured for the UE by a network device, which can solve the problem that there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap; and which can further avoid the problem that for processing an aperiodic downlink PRS or semi-persistent downlink PRS within a periodic measurement gap, the UE cannot process the downlink PRS, or the problem of not being able to meet requirements of low positioning delay, that is, the positioning delay can be reduced.
Optionally, the network device may configure the target measurement gap for the UE according to target message information, where the target message information is UE positioning measurement capability information reported by the UE or historical data information reported by the UE. That is, the network device can select/autonomously select to configure the target measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS.
For example, the network device may select to configure the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS in an explicit and/or implicit manner. For instance, according to the UE positioning measurement capability information reported by the UE, the network device selects to configure the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS in an explicit and/or implicit manner.
Optionally, a time unit of the target measurement gap is associated with the UE positioning measurement capability information reported by the UE. The time unit of the target measurement gap is sub-frame, slot, or orthogonal frequency division multiplexing (OFDM) symbol. For example, according to association between UE positioning measurement capability levels and time units of the target measurement gap, a time unit of the target measurement gap corresponding to the UE positioning measurement capability level reported by the UE is determined.
Optionally, the UE positioning measurement capability information includes at least one of the following:
Optionally, the association between UE positioning measurement capability levels and time units of the target measurement gap, may refer to association between UE positioning measurement capability information and configuration parameters in the embodiment in which the target measurement gap is implicitly configured.
For another example, the network device can independently select to configure the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS in an explicit and/or implicit manner. For instance, according to the historical data information reported by the UE, the network device independently selects to configure the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS in an explicit and/or implicit manner.
Optionally, the step 11 may specifically include: transmitting a configuration parameter of the target measurement gap to the UE; and/or configuring a target duration of the aperiodic downlink PRS or semi-persistent downlink PRS for the UE; where the target duration is a sub-frame, slot or OFDM symbol where the aperiodic downlink PRS or semi-persistent downlink PRS is located. The target measurement gap is configured by configuring the target duration.
For example, the network device may explicitly configure the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS, and transmit the configuration parameter of the target measurement gap to the UE, to notify the UE of the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS.
Optionally, the step of transmitting a configuration parameter of the target measurement gap to the UE, may specifically include: transmitting the configuration parameter of the target measurement gap to the UE through first signaling.
The first signaling may be: LTE positioning protocol (LPP) signaling, radio resource control (RRC) signaling, medium access control control element (MAC-CE) signaling or downlink control information (DCI) signaling.
Optionally, in case that the target measurement gap is an aperiodic measurement gap for an aperiodic downlink PRS, the transmitting a configuration parameter of the target measurement gap to the UE, includes:
For example, the network device configures a total of N transmit and receive points (TRPs), and each TRP may include at least one downlink PRS resource set; T1 represents the starting moment of the aperiodic measurement gap, and T2 represents the end moment of the aperiodic measurement gap; L1 represents a duration of the aperiodic measurement gap.
The network device may notify any two values of T1, T2 and L1 through explicit signaling. Optionally, the explicit signaling may be LPP signaling, RRC signaling, MAC-CE signaling or DCI signaling.
T1=min{T1(TRP #1), T1(TRP #2), . . . , T1(TRP #N)}; that is, T1 is a minimum value of starting moments of aperiodic downlink PRS resource sets from all downlink cells.
T2=max{T2(TRP #1), T2(TRP #2), . . . , T2(TRP #N)}; that is, T2 is a maximum value of end moments of the aperiodic downlink PRS resource sets from all downlink cells.
L=T2−T1.
Time units of T1, T2 and L may be sub-frames, slots or OFDM symbols. The advantage of taking sub-frames as the time units of T1, T2 and L lies in absolute time, and consistency can be guaranteed as a unit of the PRS period is a sub-frame. The advantage of taking slots as the time units of T1, T2 and L lies in that time domain mapping of PRS resources and PRS resource sets is carried out with the slot as a basic unit. The advantage of taking OFDM symbols as the time units of T1, T2 and L lies in that a granularity is small and an occupied time-frequency resource overhead is small.
As shown in
Optionally, in case that the target measurement gap is a semi-persistent measurement gap for a semi-persistent downlink PRS, the step of transmitting a configuration parameter of the target measurement gap to the UE, may include:
The repetition period of the semi-persistent measurement gap for the semi-persistent downlink PRS is equal to or greater than a repetition period of the semi-persistent downlink PRS.
Optionally, in case that the target measurement gap is a semi-persistent measurement gap for a semi-persistent downlink PRS, the method further includes:
Optionally, for the semi-persistent measurement gap, when the semi-persistent downlink PRS is deactivated, it is automatically disabled.
For example, a total of N TRPs are configured, and TDM multiplexing mode is adopted between downlink PRS resource sets of different TRPs. T1 represents a starting moment of the semi-persistent measurement gap; T2 represents an end moment of the semi-persistent measurement gap; L2 represents a duration of the semi-persistent measurement gap in a cycle; and P represents a repetition period of the semi-persistent measurement gap.
The network device may notify P and any two values of T1, T2 and L2 through explicit signaling. Optionally, the explicit signaling may be LPP signaling, RRC signaling, MAC-CE signaling or DCI signaling.
T1=min{T1(TRP #1), T1(TRP #2), . . . , T1(TRP #N)}; that is, T1 is a minimum value of starting moments of semi-persistent downlink PRS resource sets from all downlink cells, within a semi-persistent downlink PRS period.
T2=max{T2(TRP #1), T2(TRP #2), . . . , T2(TRP #N)}; that is, T2 is a maximum value of end moments of the semi-persistent downlink PRS resource sets from all downlink cells, within the semi-persistent downlink PRS period.
L2=T2−T1;T3=T1+P;T4=T2+P.
Where T3 represents a starting moment of a semi-persistent measurement gap for a next repetition period, and T4 represents an end moment of the semi-persistent measurement gap for the next repetition period. Time units of T1, T2, T3, T4, L2 and P may be sub-frames, slots or OFDM symbols (which may be specifically determined according to UE positioning measurement capability information).
As shown in
For another example, the network device may configure, in an implicit configuration manner, the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS. That is, the network device does not configure a positioning measurement gap for the UE through explicit signaling, but configures a time domain resource (or referred as a target duration, such as a sub-frame, a slot or an OFDM symbol where the aperiodic downlink PRS or semi-persistent downlink PRS is located) where the aperiodic downlink PRS or semi-persistent downlink PRS is located, the UE performs downlink positioning signal reception and measurement processing by default in a predefined manner in the protocol.
Optionally, according to the UE positioning measurement capability information reported by the UE to the network device, within a positioning measurement gap determined by implicit configuration, the UE may select one of the following two modes for processing:
The first downlink signal is a downlink signal other than the downlink PRS.
Optionally, the foregoing modes 1 and 2 may be pre-defined by a protocol or notified by high-level signaling.
Association between UE positioning measurement capability levels, UE positioning measurement capability, starting moment T1, duration L and end moment T2, is shown in the following Table 2, where N represents the number of configured TRPs.
Optionally, valid slots and valid condition judgment rules for the above UE positioning measurement capability levels of level 4 and level 5 are shown in Table 3, where N1 and N2 are positive integers greater than or equal to 1.
Optionally, the foregoing Table 2 and Table 3 may be predefined by a protocol or notified by high-level signaling.
Optionally, in case that the UE positioning measurement capability information includes: whether the UE is able to simultaneously perform positioning measurement and downlink processing in a downlink activated bandwidth part, in different bandwidth parts of the same frequency band or in different frequency bands, the UE can perform downlink positioning reference signal PRS reception and measurement in the target measurement gap, according to corresponding relationship between the UE positioning measurement capability levels and bandwidth-specific UE positioning measurement capability shown in Table 4.
For another example, the network device may configure for the UE, through an explicit configuration and an implicit configuration, the target measurement gap for the aperiodic downlink PRS or semi-persistent downlink PRS.
When the target measurement gaps determined according to the explicit configuration and the implicit configuration are inconsistent, the target measurement gap determined according to the explicit configuration may be adopted, or, the target measurement gap determined according to the implicit configuration may be adopted, which are determined by the protocol agreement.
Optionally, it can be agreed that the explicit configuration has a higher priority, that is, when the target measurement gaps determined according to the explicit configuration and the implicit configuration are inconsistent, the target measurement gap determined according to the explicit configuration shall prevail.
The measurement configuration method of the present disclosure has been introduced above, and a corresponding network device in one embodiment will be further described hereinafter in conjunction with the accompanying drawings.
Specifically, as shown in
Optionally, the network device 400 further includes:
Optionally, a time unit of the target measurement gap is associated with the UE positioning measurement capability information reported by the UE.
The time unit of the target measurement gap is sub-frame, slot, or orthogonal frequency division multiplexing (OFDM) symbol.
Optionally, the configuration module 410 includes:
Optionally, the transmission submodule includes:
Optionally, in case that the target measurement gap is an aperiodic measurement gap for an aperiodic downlink PRS, the transmission submodule includes:
Optionally, in case that the target measurement gap is a semi-persistent measurement gap for a semi-persistent downlink PRS, the transmission submodule includes:
The configuration parameter of the one semi-persistent measurement gap includes: any two of the second starting moment, the second end moment and a second duration; and the second duration is a duration from the second starting moment to the second end moment.
Optionally, the network device 400 further includes:
Optionally, the UE positioning measurement capability information includes at least one of the following:
The network device embodiments of the present disclosure are corresponding to the foregoing method embodiments, and all implementation means in the foregoing method embodiments are applicable to the network device embodiments, and can also achieve the same technical effects.
According to the network device 400 in the above scheme, the target measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS is configured for the UE by the network device, which can solve the problem that there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap; and which can further avoid the problem that for processing an aperiodic downlink PRS or semi-persistent downlink PRS within a periodic measurement gap, the UE cannot process the downlink PRS, or the problem of not being able to meet requirements of low positioning delay, that is, the positioning delay can be reduced.
In order to better achieve the above purpose, as shown in
Optionally, the processor 500 is configured to read the program in the memory 520 to perform the following processes:
Optionally, the processor 500 executes the program to perform the following steps:
Optionally, a time unit of the target measurement gap is associated with the UE positioning measurement capability information reported by the UE.
The time unit of the target measurement gap is sub-frame, slot, or orthogonal frequency division multiplexing (OFDM) symbol.
Optionally, the processor 500 executes the program to perform the following steps:
Optionally, the processor 500 executes the program to perform the following steps:
Optionally, in case that the target measurement gap is an aperiodic measurement gap for an aperiodic downlink PRS, the processor 500 executes the program to perform the following steps:
Optionally, in case that the target measurement gap is a semi-persistent measurement gap for a semi-persistent downlink PRS, the processor 500 executes the program to perform the following steps:
The configuration parameter of the one semi-persistent measurement gap includes: any two of the second starting moment, the second end moment and a second duration; and the second duration is a duration from the second starting moment to the second end moment.
Optionally, the processor 500 executes the program to perform the following steps:
Optionally, the UE positioning measurement capability information includes at least one of the following:
The transceiver 510 is configured to receive and transmit data under control of the processor 500.
In
Those skilled in the art can understand that all or part of the steps in the foregoing embodiments may be implemented by hardware, or may be implemented by instructing relevant hardware through a computer program. The computer program includes instructions for executing part or all of the steps of the foregoing method; and the computer program may be stored in a readable storage medium, which can be any form of storage medium.
One embodiment of the present disclosure further provides a computer-readable storage medium including programs or instructions stored thereon. The programs or instructions are executed by a processor to perform each process in the measurement configuration method in the embodiment of the present disclosure, to achieve the same technical effects, which will not be repeated here to avoid repetition.
The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
The above describes the measurement configuration method of the embodiment of the present disclosure from the network device, and a measurement method at the UE will be further described hereinafter with reference to the accompanying drawings.
As shown in
Step 61: obtaining a target measurement gap for an aperiodic downlink PRS or a semi-persistent downlink PRS, which is configured by a network device for a user equipment (UE).
The target measurement gap is an aperiodic measurement gap or a semi-persistent measurement gap.
Optionally, the target measurement gap for the aperiodic downlink PRS is an aperiodic measurement gap, and the target measurement gap for the semi-persistent measurement gap is a semi-persistent measurement gap.
Optionally, the measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS may be a measurement gap dedicated to positioning, that is, the measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS occupies a different time resource from a current measurement gap used for other purposes; or, the measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS and the current measurement gap used for other purposes may also multiplex the same time resource.
Step 62: performing downlink PRS reception and measurement according to the target measurement gap.
In the embodiment of the present disclosure, the network device configures for the UE, the target measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS, so that the UE can receive and process the aperiodic downlink PRS or semi-persistent downlink PRS according to the aperiodic measurement gap or semi-persistent measurement gap configured by the network device, which can solve the problem that there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap; and which can further avoid the problem that for processing an aperiodic downlink PRS or semi-persistent downlink PRS within a periodic measurement gap, the UE cannot process the downlink PRS, or the problem of not being able to meet requirements of low positioning delay, that is, the positioning delay can be reduced.
Optionally, the step of obtaining a target measurement gap for an aperiodic downlink PRS or a semi-persistent downlink PRS, which is configured by a network device for a user equipment (UE), includes: [00324] receiving a configuration parameter of the target measurement gap transmitted by the network device; and/or, obtaining a target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE; where the target duration is a sub-frame, slot or OFDM symbol where the aperiodic downlink PRS or semi-persistent downlink PRS is located. The target measurement gap is configured by configuring the target duration.
The receiving a configuration parameter of the target measurement gap transmitted by the network device is to receive the target measurement gap configured by the network device for the UE in an explicit configuration manner. Specifically, the configuration method for configuring, by the network device in the explicit manner, the target measurement gap for the UE, may be referred to the embodiments on the network device side, and will not be repeated here to avoid repetition.
Optionally, the step of receiving a configuration parameter of the target measurement gap transmitted by the network device, may include:
Optionally, for an aperiodic downlink PRS, the receiving a configuration parameter of the target measurement gap transmitted by the network device, may include:
Optionally, for a semi-persistent downlink PRS, the step of receiving a configuration parameter of the target measurement gap transmitted by the network device, may include:
Optionally, for the semi-persistent downlink PRS, the method further includes:
Optionally, in case of obtaining a target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, that is, in case that the network device configures a target measurement gap for the UE through implicit configuration, the performing downlink PRS reception and measurement according to the target measurement gap includes one of the following modes:
Optionally, the method may further include: transmitting UE positioning measurement capability information to the network device.
Optionally, the UE positioning measurement capability information includes at least one of the following:
The UE may directly transmit the UE positioning measurement capability information to a serving base station; or the UE first transmits the UE positioning measurement capability information to a location management function (LMF), and then the LMF forwards it to the serving base station. Meanwhile, the serving base station also needs to obtain downlink PRS configuration information of all non-serving base stations.
Optionally, the serving base station obtaining downlink PRS configuration information of all non-serving base stations, includes:
For example, in case that the network device configures the target measurement gap for the UE through implicit configuration, according to the UE positioning measurement capability information reported by the UE to the network device, the UE selects one of the foregoing modes 1 and 2 for processing within the determined target measurement gap.
Optionally, the foregoing modes 1 and 2 may be predefined through a protocol, or notified through higher-layer signaling.
Optionally, in case of obtaining the target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, the step of performing downlink PRS reception and measurement according to the target measurement gap, includes:
That is to say, in case that the network device configures the target measurement gap for the UE through implicit configuration, according to the agreement, the UE can determine the target measurement gap within the target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, so as to receive and process the downlink PRS.
Optionally, in case that the positioning measurement capability information includes: in the same sub-frame or slot, whether UE is able to simultaneously perform positioning measurement and downlink processing, the step of determining the target measurement gap according to the UE positioning measurement capability information, may include:
Optionally, the valid condition includes:
Specifically, during the target duration of aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, the rules for determining by the UE the target measurement gap according to the agreement, may refer to the above Table 2 and Table 3, which are not repeated here to avoid repetition.
Optionally, in case that the UE positioning measurement capability information includes: whether the UE is able to simultaneously perform positioning measurement and downlink processing in a downlink active bandwidth part, in different bandwidth parts of the same frequency band or in different frequency bands, the performing downlink PRS reception and measurement according to the target measurement gap, includes:
Specifically, the rules for performing, by the UE, the downlink PRS reception and processing according to the agreement, during the target duration of aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, may refer to the above Table 4, which are not repeated here to avoid repetition.
The above embodiments respectively introduce the measurement method of the present disclosure, and a corresponding UE in one embodiment will be further described hereinafter with reference to the accompanying drawings.
As shown in
Optionally, the obtaining module 710 includes:
Optionally, the receiving submodule includes:
Optionally, the receiving submodule includes:
Optionally, the receiving submodule includes:
Optionally, the UE 700 further includes:
Optionally, in case of obtaining a target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, the processing module 720 includes:
Optionally, the UE 700 further includes:
Optionally, in case of obtaining the target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, the processing module 720 includes:
Optionally, in case that the positioning measurement capability information includes: in the same sub-frame or slot, whether UE is able to simultaneously perform positioning measurement and downlink processing, the third determining submodule includes:
Optionally, the valid condition includes:
Optionally, in case that the UE positioning measurement capability information includes: whether the UE is able to simultaneously perform positioning measurement and downlink processing in a downlink active bandwidth part, in different bandwidth parts of the same frequency band or in different frequency bands, the processing module 720 includes:
The UE embodiments of the present disclosure are corresponding to the foregoing method embodiments, and all implementation means in the foregoing method embodiments are applicable to the UE embodiments, and can also achieve the same technical effects.
According to the UE 700 in the embodiment of the present disclosure, the network device configures for the UE, the target measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS, so that the UE can receive and process the aperiodic downlink PRS or semi-persistent downlink PRS according to the aperiodic measurement gap or semi-persistent measurement gap configured by the network device, which can solve the problem that there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap; and which can further avoid the problem that for processing an aperiodic downlink PRS or semi-persistent downlink PRS within a periodic measurement gap, the UE cannot process the downlink PRS, or the problem of not being able to meet requirements of low positioning delay, that is, the positioning delay can be reduced.
As shown in
Optionally, the processor 81 executes the program to perform the following steps:
Optionally, the processor 81 executes the program to perform the following steps:
Optionally, the processor 81 executes the program to perform the following steps:
Optionally, the processor 81 executes the program to perform the following steps:
Optionally, the processor 81 executes the program to perform the following steps:
Optionally, the processor 81 executes the program to perform the following steps:
Optionally, in case of obtaining a target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, the processor 81 executes the program to perform the following steps:
Optionally, the processor 81 executes the program to perform the following steps:
Optionally, in case of obtaining the target duration of the aperiodic downlink PRS or semi-persistent downlink PRS configured by the network device for the UE, the processor executes the program to perform the following steps:
Optionally, in case that the positioning measurement capability information includes: in the same sub-frame or slot, whether UE is able to simultaneously perform positioning measurement and downlink processing, the processor 81 executes the program to perform the following steps:
Optionally, the valid condition includes:
Optionally, in case that the UE positioning measurement capability information includes: whether the UE is able to simultaneously perform positioning measurement and downlink processing in a downlink active bandwidth part, in different bandwidth parts of the same frequency band or in different frequency bands, the processor 81 executes the program to perform the following steps:
A transceiver 84 is coupled to the bus interface 82, and is configured to receive and transmit data under control of the processor 81.
It is to be noted that, in
Those skilled in the art can understand that all or part of the steps in the foregoing embodiments may be implemented by hardware, or may be implemented by instructing relevant hardware through a computer program. The computer program includes instructions for executing part or all of the steps of the foregoing method; and the computer program may be stored in a readable storage medium, which can be any form of storage medium.
One embodiment of the present disclosure further provides a computer-readable storage medium including programs or instructions stored thereon. The programs or instructions are executed by a processor to perform each process in the measurement method in the embodiment of the present disclosure, to achieve the same technical effects, which will not be repeated here to avoid repetition.
The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
The foregoing methods of the present disclosure will be described hereinafter with reference to specific embodiments at the network device side and at the UE side.
Embodiment 1: a network device (a serving base station is taken as an example hereinafter) uses explicit signaling to notify a UE of a positioning measurement gap for an aperiodic or semi-persistent downlink PRS, where N=8.
An execution process at the UE side is as follows:
At step 1, the UE reports UE positioning measurement capability information to the serving base station.
At step 2, the UE receives an explicit configuration parameter of an aperiodic/semi-persistent positioning measurement gap transmitted by the serving base station.
At step 3, the UE performs corresponding processing, respectively, according to the explicit configuration parameter obtained in the above step 2.
For example, for the explicitly configured positioning measurement gap, the UE performs downlink PRS reception and measurement processing at a positioning measurement gap indicated by the explicit configuration parameter, thereby obtaining a positioning measurement result.
At step 4, the UE reports the positioning measurement result to the network, or performs UE position calculation based on the positioning measurement result.
Steps executed at the serving base station side are as follows.
At step 1, according to UE positioning measurement capability information reported by the UE, the serving base station selects to explicitly configure aperiodic/semi-persistent positioning measurement gap.
For example, for an aperiodic downlink PRS, the positioning measurement gap is aperiodic, and a configuration parameter may be defined in the following manner.
A starting moment T1 of the aperiodic positioning measurement gap is a minimum value of starting moments of aperiodic downlink PRS resource sets from all downlink cells configured by the network. An end moment T2 of the aperiodic positioning measurement gap is a maximum value of end moments of the aperiodic downlink PRS resource sets from all downlink cells configured by the network. A duration L1 of the aperiodic positioning measurement gap is expressed as L1=T2-T1.
For example, a total of N=8 TRPs are configured, T1 represents the starting moment of the aperiodic positioning measurement gap, T2 represents the end moment of the aperiodic positioning measurement gap, and L1 represents the duration of the aperiodic positioning measurement gap.
The serving base station notifies any two values of T1, T2 and L1 through explicit signaling. The explicit signaling may be LPP signaling, RRC signaling, MAC-CE or DCI signaling.
L1=T2−T1=T2(TRP#8)−T1(TRP#1).
Time units of T1, T2 and L1 may be sub-frames, slots or OFDM symbols.
Example 1: for an indoor factory (InF) scenario, the maximum TRP interval is 300 meters, a transmission delay is 1 microsecond (us), within CP range of FDM symbols (for SCS=15 KHz, a CP length is 4.6 us/5.2 us). As shown in
For another example: for a semi-persistent positioning measurement gap, a repetition period of the semi-persistent positioning measurement gap is equal to or greater than a repetition period of the semi-persistent downlink PRS. Optionally, in the embodiments of the present disclosure, the repetition period of the semi-persistent positioning measurement gap being equal to the repetition period of the semi-persistent downlink PRS may mean that the repetition period of the semi-persistent positioning measurement gap is the same as the repetition period of the semi-persistent downlink PRS, or there is an integer multiple relationship between the repetition period of the semi-persistent positioning measurement gap and the repetition period of the semi-persistent downlink PRS.
For the positioning measurement gap for the semi-persistent downlink PRS, the configuration parameter may be defined in the following manner: in one semi-persistent downlink PRS period, a starting moment T1 of the semi-persistent positioning measurement gap is a minimum value of starting moments of semi-persistent downlink PRS resource sets from all downlink cells configured by the network; an end moment T2 of the semi-persistent positioning measurement gap is a maximum value of end moments of the semi-persistent downlink PRS resource sets from all downlink cells configured by the network; a duration L2 of the semi-persistent positioning measurement gap is expressed as L2=T2-T1.
For example, a total of 8 TRPs are configured, and TDM multiplexing is adopted between downlink PRS resource sets of different TRPs. T1 represents a starting moment of the semi-persistent positioning measurement gap, T2 represents an end moment of the semi-persistent positioning measurement gap, L2 represents a duration of the semi-persistent positioning measurement gap in one cycle, and P represents a repetition period of the semi-persistent positioning measurement gap.
The network device may notify P and any two values of T1, T2 and L2 through explicit signaling. The explicit signaling may be LPP signaling, RRC signaling, MAC-CE signaling or DCI signaling.
As shown in
L=T2−T1=6;
T3=T1+P=T1+64;
T4=T2+P=T2+64.
At step 2, the serving base station notifies the UE of the configuration parameter of the aperiodic/semi-persistent positioning measurement gap through signaling. The signaling may be RRC signaling, MAC-CE signaling or DCI signaling.
For the semi-persistent positioning measurement gap, when the semi-persistent positioning PRS is deactivated, it will automatically disabled.
At step 3, the serving base station transmits the aperiodic/semi-persistent downlink PRS to the UE.
Embodiment 2: a network device (such as a serving base station) notifies a UE of a positioning measurement gap for an aperiodic or semi-persistent downlink PRS in an explicit and implicit signaling manner.
Steps executed at the UE are as follows.
At step 1, the UE reports UE positioning measurement capability information to the serving base station.
At step 2, the UE receives an explicit configuration parameter of an aperiodic/semi-persistent positioning measurement gap transmitted by the serving base station, and the UE obtains an implicit configuration parameter of the aperiodic positioning measurement gap in a protocol predefined manner.
At step 3, the UE performs processing according to the configuration parameter obtained in the above step 2.
For example, for an explicitly configured positioning measurement gap, the UE performs downlink PRS reception and measurement processing at a positioning measurement gap indicated by the explicit configuration parameter, thereby obtaining a positioning measurement result. For an implicitly configured positioning measurement gap, according to predefined rules, the UE performs downlink positioning signal reception and measurement processing by default in a sub-frame, slot or OFDM symbol where the aperiodic downlink PRS is configured, thereby obtaining a positioning measurement result.
Optionally, in the manner of combining explicit configuration with implicit configuration, some parameters may be configured explicitly, and some other parameters may be predefined by the protocol (i.e., implicit configuration).
At step 4, the UE reports the positioning measurement result to the network, or performs UE position calculation based on the positioning measurement result.
Steps executed at the serving base station are as follows.
At step 1, the serving base station selects according to UE positioning capability reported by the UE, or autonomously selects, to configure an aperiodic positioning measurement gap in an explicit and implicit signaling manner.
For example, for the manner of combining explicit configuration with implicit configuration, first, proceeding to step 1.2, then proceeding to step 1.1. If a parameter of the implicit configuration conflicts with a parameter of the explicit configuration, the parameter of the explicit configuration shall prevail.
Step 1.1: explicit configuration: referring to the above embodiment 1, which are not repeated here to avoid repetition.
Step 1.2: implicit configuration: implicitly configuring the positioning measurement gap, that is, it is agreed to not notify the UE of the positioning measurement gap through explicit signaling, but to perform downlink positioning signal reception and measurement processing by default in a sub-frame, slot or OFDM symbol where the aperiodic downlink PRS is configured, in a predefined manner in the protocol.
According to the UE positioning measurement capability reported by the UE to the network, the UE selects the following mode 1 for processing in an implicit positioning measurement gap.
Mode 1: the UE can only perform positioning measurement operation, and is unable to receive and process other downlink channels/signals. The association between the UE positioning measurement capability level, the UE positioning measurement capability, the starting moment T1, the duration L and the end moment T2, is shown in the above Table 2, where N=4.
Valid slots and valid condition judgment rules for the above UE positioning measurement capability levels of level 4 and level 5 in Table 2 are shown in Table 3, where N1 and N2 are positive integers greater than or equal to 1, for example, N1=2, N2=2.
Table 4 shows corresponding relationship between the UE positioning measurement capability levels and bandwidth-specific UE positioning measurement capability.
The above modes and tables may be predefined in a protocol or notified by high-level signaling.
At step 2, the serving base station notifies the UE of the configuration parameter of the aperiodic positioning measurement gap through signaling. The signaling may be RRC signaling, MAC-CE signaling or DCI signaling.
At step 3, the serving base station transmits the aperiodic/semi-persistent downlink PRS to the UE.
In the embodiment of the present disclosure, the target measurement gap for the aperiodic downlink PRS or the semi-persistent downlink PRS is configured for the UE by the network device, which can solve the problem that there is no solution for processing an aperiodic downlink PRS or a semi-persistent downlink PRS within a measurement gap; and which can further avoid the problem that for processing an aperiodic downlink PRS or semi-persistent downlink PRS within a periodic measurement gap, the UE cannot process the downlink PRS, or the problem of not being able to meet requirements of low positioning delay, that is, the positioning delay can be reduced.
In addition, it should be noted that in the devices and methods of the present disclosure, apparently, each component or each step may be decomposed and/or recombined. These decomposition and/or recombination should be regarded as equivalent solutions of the present disclosure. In addition, the steps of performing the above series of processing may be performed naturally in chronological order in the order of description, but do not necessarily need to be performed in chronological order, and some steps may be performed in parallel or independently of each other. Those of ordinary skill in the art can understand that all or any of the steps or components of the method and device of the present disclosure may be implemented in hardware, firmware, software or a combination thereof in any computing device (including processor, storage medium, etc.) or network of computing devices, which can be achieved by those of ordinary skill in the art with their basic programming skills after reading the description of the present disclosure.
Therefore, the object of the present disclosure may also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known universal device. Therefore, the object of the present disclosure may also be achieved only by providing a program product containing program codes for implementing the method or device. In other words, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure. Apparently, the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that in the devices and methods of the present disclosure, apparently, each component or each step may be decomposed and/or recombined. These decomposition and/or recombination should be regarded as equivalent solutions of the present disclosure. In addition, the steps of performing the above series of processing may be performed naturally in chronological order in the order of description, but do not necessarily need to be performed in chronological order, and some steps may be performed in parallel or independently of each other.
It can be understood that those embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For implementation with hardware, units, modules, sub-units and sub-modules may be implemented in one or more application specific integrated circuits (ASIC), a digital signal processor (DSP), a digital signal processing device (DSP Device, DSPD), a programmable logic device (PLD), a field-programmable gate array (PFGA), a general processor, a controller, a micro-controller, a microprocessor, another electronic unit for implementing the functions of the present disclosure, or their combinations.
The above are optional embodiments of the present disclosure. It should be pointed out that, for persons having ordinary skill in the art, several improvements and changes may be made, without departing from the principle of the present disclosure. These improvements and changes should also be within the scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202011112946.9 | Oct 2020 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/124125 | 10/15/2021 | WO |
