Patent Application
20240349208
Embodiments of the disclosure relate to the field of communication, and particularly to a wireless communication method, a network device, and a terminal device.
The embodiments of the disclosure provide a wireless communication method, a network device, and a terminal device. The network device may indicate a QCL parameter in different indication manners according to whether an SSB is associated with SIB1, which is favorable for ensuring that the terminal device correctly receives QCL indication information.
A first aspect provides a method for wireless communication, which may include that: a network device determines SIB1 association indication information of a first SSB, the SIB1 association indication information being configured to indicate whether the first SSB is associated with SIB1; the network device determines whether the first SSB bears indication information of a QCL parameter and/or an indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1; and the network device sends the first SSB.
A second aspect provides a method for wireless communication, which may include that: a terminal device receives a first SSB, the first SSB including SIB1 association indication information, and the SIB1 association indication information being configured to indicate whether the first SSB is associated with SIB1; and the terminal device determines whether the first SSB bears indication information of a QCL parameter and/or an indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1.
A third aspect provides a network device, which is configured to execute the method in the first aspect or any possible implementation mode of the first aspect. Specifically, the network device includes units configured to execute the method in the first aspect or any possible implementation mode of the first aspect.
A fourth aspect provides a terminal device, which is configured to execute the method in the second aspect or any possible implementation mode of the second aspect. Specifically, the terminal device includes units configured to execute the method in the second aspect or any possible implementation mode of the second aspect.
A fifth aspect provides a network device, which may include a processor and a memory. The memory may be configured to store a computer program. The processor may be configured to call and run the computer program stored in the memory to execute the method in the first aspect or each implementation mode thereof.
A sixth aspect provides a terminal device, which may include a processor and a memory. The memory may be configured to store a computer program. The processor may be configured to call and run the computer program stored in the memory to execute the method in the second aspect or each implementation mode thereof.
A seventh aspect provides a chip, which may be configured to implement the method in any one of the first aspect to the second aspect or each implementation mode thereof.
Specifically, the chip may include a processor, configured to call and run a computer program in a memory to enable a device installed with the chip to execute the method in any one of the first aspect to the second aspect or each implementation mode thereof.
An eighth aspect provides a computer-readable storage medium, which may be configured to store a computer program, the computer program enabling a computer to execute the method in any one of the first aspect to the second aspect or each implementation mode thereof.
A ninth aspect provides a computer program product, which may include a computer program instruction, the computer program instruction enabling a computer to execute the method in any one of the first aspect to the second aspect or each implementation mode thereof.
A tenth aspect provides a computer program, which may run in a computer to enable the computer to execute the method in any one of the first aspect to the second aspect or each implementation mode thereof.
Based on the technical solutions, the network device may determine an indication manner for indication information of a QCL parameter in a PBCH according to whether an SSB is associated with SIB1, which is favorable for ensuring that the terminal device correctly receives the indication information of the QCL parameter.
The technical solutions in the embodiments of the disclosure will be described below in combination with the drawings in the embodiments of the disclosure. It is apparent that the described embodiments are not all embodiments but part of embodiments of the disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the disclosure without creative work shall fall within the scope of protection of the disclosure.
In a New Radio (NR)-based access to unlicensed spectrum (NR-U) system, a terminal device, after receiving Synchronization Signal/Physical Broadcast Channel Blocks (SSBs), need to know a Quasi-Co-Located (QCL) relationship between the SSBs to jointly process SSBs that satisfy the QCL relationship. To obtain a QCL relationship between SSB position indexes, a QCL parameter Q is needed to be known, Q representing the largest number of SSBs that do not satisfy the QCL relationship.
In some implementation modes, the QCL parameter Q may be born in a Physical Broadcast Channel (PBCH). Specifically, part of bits in an SSB-SubcarrierOffset information field or part of bits in a Physical Downlink Control Channel (PDCCH) configuration System Information Block (SIB) 1 (pdcch-ConfigSIB1) information field in the PBCH are required to be occupied to bear Q. However, when an SSB is not associated with SIB1, a frequency-domain position of a second SSB associated with SIB1 is required to be born through the SSB-SubcarrierOffset information field and the pdcch-ConfigSIB1 information field.
The technical solutions of the embodiments of the disclosure may be applied to various communication systems, for example, a Global System of Mobile communication (GSM), a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system or a future 5th-Generation (5G) system.
Exemplarily,
The communication system 100 may further include at least one terminal device 120 within the coverage of the network device 110. The “terminal device” in the disclosure includes, but not limited to, a device arranged to receive/send a communication signal through a wired line connection, for example, through Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), digital cable and direct cable connections, and/or another data connection/network) and/or through a wireless interface, for example, for a cellular network, a Wireless Local Area Network (WLAN), a digital television network like a Digital Video Broadcasting-Handheld (DVB-H) network, a satellite network and an Amplitude Modulated (AM)-Frequency Modulated (FM) broadcast transmitter, and/or another communication terminal, and/or an Internet of Things (IoT) device. The terminal device configured to communicate through a wireless interface may be called a “wireless communication terminal”, a “wireless terminal”, or a “mobile terminal.” Examples of the mobile terminal include, but not limited to, a satellite or cellular telephone, a Personal Communication System (PCS) terminal capable of combining a cellular radio telephone and data processing, faxing and data communication capabilities, a Personal Digital Assistant (PDA) capable of including a radio telephone, a pager, Internet/intranet access, a Web browser, a notepad, a calendar and/or a Global Positioning System (GPS) receiver, and a conventional laptop and/or palmtop receiver or another electronic device including a radio telephone transceiver. The terminal device may refer to an access terminal, User Equipment (UE), a user unit, a user station, a mobile station, a mobile radio station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal may be a cell phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a PDA, a handheld device with a wireless communication function, a computing device, another processing device connected to a wireless modem, a vehicle device, a wearable device, a terminal device in the 5G network, a terminal device in the future evolved PLMN, etc.
Optionally, the terminal device 120 may perform Device to Device (D2D) communication.
Optionally, the 5G system or the 5G network may also be called an NR system or an NR network.
Optionally, the communication system 100 may further include another network entity such as a network controller and a mobility management entity. No limits are made thereto in the embodiments of the disclosure.
It is to be understood that a device with a communication function in the network/system in the embodiments of the disclosure may be called a communication device. For example, for the communication system 100 shown in
It is to be understood that terms “system” and “network” in the disclosure may usually be interchanged in the disclosure. In the disclosure, term “and/or” is only an association relationship describing associated objects and represents that three relationships may exist. For example, A and/or B may represent three conditions: i.e., independent existence of A, existence of both A and B, and independent existence of B. In addition, character “/” in the disclosure usually represents that previous and next associated objects form an “or” relationship.
In an NR system, when a first SSB detected by a terminal device is not associated with SIB1, the terminal device is required to continue detecting a second SSB associated with SIB1 to obtain SIB1. In some implementation modes, when the first SSB is not associated with SIB1, a network device may indicate that the first SSB is not associated with SIB1 through a reserved value in an SSB-SubcarrierOffset information field (kSSB) in a PBCH of the first SSB and indicate a frequency-domain position of the second SSB associated with SIB1 through bits in kSSB and bits in a pdcch-ConfigSIB1 information field, so that the terminal device may detect the second SSB based on the frequency-domain position of the second SSB to receive SIB1.
In the NR system, an SSB may be sent in a time window (for example, a 5 ms time window), and may be repeatedly sent according to a period. Optionally, the period may be, for example, 5 ms, 10 ms, 20 ms, 40 ms, 80 ms, and 160 ms. In a time window, the largest number of SSBs that may be sent by the network device is L, and the number of SSBs that are actually sent may be less than L.
For the terminal device, an SSB index may be obtained through a received SSB, the SSB index corresponding to a relative position of the SSB in the time window. The terminal device may determine a position of the SSB in a radio frame based on the SSB index and a half frame indication born in the PBCH, thereby implementing frame synchronization.
For a QCL relationship, the terminal device may assume that SSBs with the same SSB index are in the QCL relationship. That is, when indexes of SSBs received by the terminal device at different moments are the same, it is determined that the SSBs are in the QCL relationship.
In an NR-U system, channel resources in an unlicensed spectrum may be shared. When using these shared resources, a communication device is required to listen to an idle channel and then use the channel. In such case, it is difficult to ensure that SSBs are periodically sent and received at fixed positions, because sequential positions where a sending device succeeds in Listen Before Talk (LBT) are unpredictable.
Therefore, multiple SSB candidate positions are provided in the NR-U system to ensure that there are still enough SSB candidate positions available for sending SSBs after successful LBT to avoid impacts of an LBT failure on SSB reception. Specifically, Y SSB candidate positions may be configured in a time window, at most L SSBs may be transmitted at the Y candidate positions for SSB transmission, L being less than Y, and SSBs may be sent only after the sending device obtains an available channel.
For example, for a 5 ms time window, L is 4, and Y is 20. As shown in
To enable the terminal device to determine the QCL relationship between SSBs, in an implementation mode, it may be assumed that SSBs with the same result obtained by performing modulus calculation on Q using SSB position indexes of the SSBs in a time window are in the QCL relationship. Therefore, for obtaining the QCL relationship between the SSB position indexes, the terminal device is required to know the QCL parameter Q, Q being the largest number of SSBs that do not satisfy the QCL relationship. Optionally, Q may be 1, 2, 4, and 8.
In some implementation modes, the network device may bear the QCL parameter through part of bits in the SSB-SubcarrierOffset information field or part of bits in a pdcch-ConfigSIB1 information field in the PBCH.
From the above descriptions, it can be seen that, when an SSB is not associated with SIB1, a frequency-domain position of a second SSB associated with SIB1 is required to be born through the SSB-SubcarrierOffset information field and the pdcch-ConfigSIB1 information field. In such case, how to indicate the QCL parameter is a problem to be solved.
In S210, the network device determines SIB1 association indication information of a first SSB, the SIB1 association indication information being configured to indicate whether the first SSB is associated with SIB1.
In S220, the network device determines whether the first SSB bears indication information of a QCL parameter and/or an indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1.
In S230, the network device sends the first SSB.
Optionally, in the embodiment of the disclosure, the first SSB may include at least one of following signals:
For convenient understanding and description, information born in the PBCH in a licensed spectrum will be briefly introduced.
The information born in the PBCH in the unlicensed spectrum includes A-bit information coming from a higher layer and also includes physical-layer (layer-1) related information. The layer-1 related information includes a System Frame Number (SFN), a half-frame indication, an SSB index, etc.
Specifically, the information born in the PBCH includes a Master Information Block (MIB) from the higher layer, totally A bits, i.e., ā0, ā1, ā2, ā3, . . . , āĀ−1, and an 8-bit information from layer 1, āĀ, āĀ+1, āĀ+2, āĀ+3, . . . , āĀ+7. The A-bit MIB includes 6 bits of the SFN, 1 bit of a subCarrierSpacingCommon information field, 4 bits of an SSB-SubcarrierOffset information field, Demodulation Reference Signal (DMRS) related information, resource information of a PDCCH scheduling a SIB, etc. 1 idle bit is also included.
The SSB-SubcarrierOffset information field includes 4 bits and is configured to indicate an offset kSSB between Physical Resource Block (PRB) grids of SSB and non-SSB channels or signals, the offset kSSB including 0 to 11 subcarriers or 0 to 23 subcarriers. The SSB-SubcarrierOffset information field may correspond to lower 4 bits of the parameter kSSB. The subCarrierSpacingCommon information field is configured to indicate a subcarrier spacing of SIB1, Message 2/4 (Msg.2/4) for initial access, paging messages, and broadcast System Information (SI)-messages.
In the 8-bit information from layer 1, i.e., āĀ, āĀ+1, āĀ+2, āĀ+3, . . . , āĀ+7, āĀ, āĀ+1, āĀ+2, āĀ+3are the lower 4 bits of the SFN, āĀ+4is a half-frame indication. When LSSB=64, āĀ+5, āĀ+6, āĀ+7are the top 3 bits of the SSB index, otherwise āĀ+5is the highest bit of the parameter kSSB, and āĀ+6, āĀ+7are reserved bits or idle bits. LSSB is the largest SSB number and corresponds to abovementioned L, and kSSB is subcarrier offset information of the SSB. When a system bandwidth is less than 6 GHZ, namely LSSB is less than 64, the layer-1 related information includes 2 idle bits.
It can be understood that the number of the bits occupied by each information field in the PBCH in the licensed spectrum is merely an example. The number of the bits occupied by each information field may also be adjusted according to an implementation requirement, a stipulation in a protocol, etc. No limits are made thereto in the embodiment of the disclosure.
In an NR-U system, the PBCH may also include each abovementioned information field, and the number of bits of each information field may be the same as that in an NR system. In some embodiments of the disclosure, the information field in the PBCH may be used to bear the indication information of the QCL parameter or bear frequency-position information of a second SSB.
In some embodiments of the disclosure, the network device may indicate the QCL parameter using a third indication manner.
As an example, the third indication manner may be bearing the indication information of the QCL parameter through part of bits in a pdcch-ConfigSIB1 information field and part of bits in an SSB-SubcarrierOffset information field. The number of bits that are specifically used may be determined based on the number of bits occupied by the indication information of the QCL parameter. For example, when the indication information of the QCL parameter occupies 2 bits, the indication information of the QCL parameter may be born through 1 bit in the pdcch-ConfigSIB1 information field and 1 bit in the SSB-SubcarrierOffset information field, as shown in
As an example, the third indication manner may be bearing the indication information of the QCL parameter through part of bits in the pdcch-ConfigSIB1 information field and part of bits in the subCarrierSpacingCommon information field. The number of bits that are specifically used may be determined based on the number of the bits occupied by the indication information of the QCL parameter. For example, when the indication information of the QCL parameter occupies 2 bits, the indication information of the QCL parameter may be born through 1 bit in the pdcch-ConfigSIB1 information field and 1 bit in the subCarrierSpacingCommon information field, as shown in
That is, no matter whether the first SSB is associated with SIB1, the network device may indicate the QCL parameter in the third indication manner. Furthermore, the terminal device may know information about the QCL parameter and thus may determine a QCL relationship between SSBs based on the QCL parameter and further jointly process SSBs that satisfy the QCL relationship, to improve the system performance.
In some other embodiments of the disclosure, the network device may determine whether the first SSB bears the indication information of the QCL parameter based on whether the first SSB is associated with SIB1.
For example, in response to the first SSB being not associated with SIB1, the network device may determine that the first SSB does not bear the indication information of the QCL parameter. In such case, when the first SSB detected by the terminal device is not associated with SIB1, the first SSB is required to indicate a frequency-domain position of a second SSB associated with SIB1, and the terminal device may acquire the QCL parameter from the second SSB. That is, the QCL parameter obtained from the first SSB is meaningless, and in such case, the first SSB may not bear the QCL parameter, so that a certain information field may be saved to indicate the frequency-domain position of the second SSB or other information.
For another example, in response to the first SSB being associated with SIB1, the network device may determine that the first SSB bears the indication information of the QCL parameter. Furthermore, the network device may determine that the indication manner for the indication information of the QCL parameter in the first SSB is a specific indication information. Optionally, the specific indication manner may be bearing the indication information of the QCL parameter through part of bits in an information field of the PBCH.
As some examples, the specific indication manner is any one of following indication manners:
As some examples, if the indication information of the QCL parameter occupies 2 bits, K is 2;
In some other alternative embodiments, the network device may determine the indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1.
For example, in response to the first SSB being not associated with SIB1, it may be determined that the indication manner for the QCL parameter in the first SSB is a first indication manner.
For another example, in response to the first SSB being associated with SIB1, it may be determined that the indication manner for the QCL parameter in the first SSB is a second indication manner.
As an example, the first indication manner may be the same as the second indication manner, namely bit fields used for bearing the indication information of the QCL parameter in the first indication manner and the second indication manner are the same.
It is to be understood that: bit fields being the same may refer to that the used information fields and the numbers of used bits in the information fields are the same and does not mean that each bit in the information fields has a different meaning. For example, when the indication information of the QCL parameter needs 2 bits, a sequence of bit fields of the 2 bits may be the same or different.
For example, the first indication manner is indicating through 1 bit in the pdcch-ConfigSIB1 information field and 1 bit in the SSB-SubcarrierOffset information field, the 1 bit in the pdcch-ConfigSIB1 information field corresponding to bit 1 in the indication information, and the 1 bit in the SSB-SubcarrierOffset information field corresponding to bit 0 in the indication information. The second indication manner is indicating through 1 bit in the pdcch-ConfigSIB1 information field and 1 bit in the SSB-SubcarrierOffset information field, the 1 bit in the pdcch-ConfigSIB1 information field corresponding to bit 1 in the indication information, and the 1 bit in the SSB-SubcarrierOffset information field corresponding to bit 1 in the indication information. In such case, it may be determined that the first indication manner is the same as the second indication manner.
As another example, the first indication manner is different from the second indication manner. Specifically, the bit fields used for bearing the indication information of the QCL parameter in the first indication manner and the second indication manner are at least partially different. For example, the first indication manner is indicating through 1 bit in the pdcch-ConfigSIB1 information field and 1 bit in the SSB-SubcarrierOffset information field, and the second indication manner is indicating through 1 bit in the pdcch-ConfigSIB1 information field and 1 bit in the subCarrierSpacingCommon information field. In such case, the first indication manner is different from the second indication manner.
As some examples, the first indication manner may be any one of following indication manners:
It is to be understood that the number of bits occupied by each information field may be determined according to the number of the bits occupied by the indication information of the QCL parameter. As some examples, when the indication information of the QCL parameter occupies 2 bits, K is 2;
As some examples, the second indication manner may be any one of following indication manners:
It is to be understood that the number of bits occupied by each information field may be determined according to the number of the bits occupied by the indication information of the QCL parameter. As some examples, when the indication information of the QCL parameter occupies 2 bits, K is 2;
Furthermore, in some embodiments, in response to the first SSB being not associated with SIB1, the first SSB may further include indication information of the frequency-domain position of the second SSB, the second SSB being associated with SIB1.
For example, the frequency-domain position of the second SSB may be indicated through an information field not configured to bear the indication information of the QCL parameter in the PBCH of the first SSB. For example, the frequency-domain position of the second SSB may be indicated through N bits in the SSB-SubcarrierOffset information field and M bits in the pdcch-ConfigSIB1 information field, N and M being positive integers. Alternatively, the frequency-domain position of the second SSB may be indicated through part or all of bits in another unused information field in the PBCH. No limits are made thereto in the embodiment of the disclosure.
The above descriptions are made only taking indicating the QCL parameter through part of bits in the pdcch-ConfigSIB1 information field, SSB-SubcarrierOffset information field, and subCarrierSpacingCommon information field in the PBCH as an example. However, the disclosure is not limited thereto. In another alternative embodiment, the QCL parameter may also be indicated through another information field in the PBCH. For example, in some embodiments, the network device may indicate the QCL parameter through other information field than the pdcch-ConfigSIB1 information field and the SSB-SubcarrierOffset information field.
In some embodiments, the other information field may include at least one of following information fields:
As some examples, when the indication information of the QCL parameter occupies 2 bits, the QCL parameter may be indicated through 1 bit in the subCarrierSpacingCommon information field and 1 bit in the SFN information field, or the QCL parameter may be indicated through 2 bits in the cellBarred information field, or the QCL parameter may be indicated through 2 bits in the co-frequency cell reselection information field, etc.
Particularly, in response to the first SSB being not associated with SIB1, the network device may indicate the QCL parameter through other information field.
It can be understood that, in response to the first SSB being not associated with SIB1, the first SSB is required to bear the indication information of the frequency-domain position of the second SSB, and the QCL parameter may be indicated through other information field than the pdcch-ConfigSIB1 information field and the SSB-SubcarrierOffset information field in the PBCH. In such case, meanings of the existing pdcch-ConfigSIB1 information field and the SSB-SubcarrierOffset information field are not changed, and the conventional art is affected less. Moreover, in response to the first SSB being not associated with SIB1, information born in the other information field is actually meaningless. In such case, bearing the indication information of the QCL parameter using the information field is favorable for increasing the resource utilization rate of the system and further improving the system performance.
Descriptions will be made below in combination with embodiment 1 and embodiment 2 taking indicating the QCL parameter through the pdcch-ConfigSIB1 information field, SSB-SubcarrierOffset information field, and subCarrierSpacingCommon information field in the PBCH as an example. However, the embodiment of the disclosure is not limited thereto.
The network device may determine whether the first SSB bears the indication information of the QCL parameter based on whether the first SSB is associated with SIB1.
In the embodiment of the disclosure, the SIB1 association indication information may be born in the PBCH, for example, in the SSB-SubcarrierOffset information field of the PBCH, and is configured to indicate whether the first SSB is associated with SIB1 or a Type0-PDCCH common search space.
A first condition: the SIB1 association indication information indicates that the first SSB is not associated with SIB1, and the network device may determine that the first SSB does not bear the indication information of the QCL parameter. In such case, the first SSB may include the indication information of the frequency-domain position of the second SSB. For example, the frequency-domain position information of the second SSB may be indicated through part or all of bits in the SSB-SubcarrierOffset information field and the pdcch-ConfigSIB1 information field.
A second condition: the SIB1 association indication information indicates that the first SSB is associated with SIB1, and the network device may indicate the QCL parameter in the specific indication manner.
When the first SSB detected by the terminal device is not associated with SIB1, since the frequency-domain position of the second SSB is required to be indicated through an information field in the PBCH, and the terminal device is further required to continue detecting the second SSB to obtain the QCL parameter, the QCL parameter obtained from the first SSB is meaningless. Therefore, an SSB may not bear the indication information of the QCL parameter when the SSB is not associated with SIB1, and in such case, an indication manner for the frequency-domain position of the second QCL parameter may be continued to be indicated through the SSB-SubcarrierOffset information field and the pdcch-ConfigSIB1 information field, to achieve higher compatibility with the conventional art. In response to the first SSB being associated with SIB1, the terminal device may acquire the QCL parameter according to the first SSB and further jointly process SSBs that satisfy the QCL relationship, to improve the system performance.
The network device determines the indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1.
In embodiment 2, no matter whether the first SSB is associated with SIB1, the terminal device may obtain the QCL parameter based on the first SSB and further jointly process SSBs that satisfy the QCL relationship. In response to the first SSB being not associated with SIB1, improvement of the performance of receiving the second SSB is facilitated.
Specifically, in response to the first SSB being not associated with SIB1, it may be determined that the indication manner for the QCL parameter in the first SSB is the first indication manner. In response to the first SSB being associated with SIB1, it may be determined that the indication manner for the QCL parameter in the first SSB is the second indication manner.
Implementation modes of the first indication manner and the second indication manner refer to the related descriptions in the above embodiment and will not be elaborated herein.
Specific implementation of the first indication manner and the second indication manner will be described in combination with
In response to the first SSB being not associated with SIB1, the QCL parameter may be indicated in the first indication manner. Specifically, as shown in
Furthermore, the first SSB may further include the indication information of the frequency-domain position of the second SSB. As an example, an information field that bears the indication information of the frequency-domain position of the second SSB may include 5 bits (bit 0 to bit 4) in the SSB-SubcarrierOffset information field and 7 bits (for example, bit 0 to bit 6) in the pdcch-ConfigSIB1 information field.
As an example, when SSB-SubcarrierOffset is valued to 24 to 31, it indicates that the SSB is not associated with SIB1.
In response to the first SSB being associated with SIB1, the QCL parameter may be indicated in the second indication manner. Specifically, as shown in
Furthermore, other information may be born through left bits in the information field of the PBCH. For example, information of a Control Resource Set (CORESET) and searchspacezero may be indicated through other 6 bits in the pdcch-ConfigSIB1 information field.
In response to the first SSB being not associated with SIB1, the QCL parameter may be indicated in the first indication manner. Specifically, as shown in
Furthermore, the first SSB may further include the indication information of the frequency-domain position of the second SSB. As an example, the information field that bears the indication information of the frequency-domain position of the second SSB may include 4 bits (bit 0 to bit 3) in the SSB-SubcarrierOffset information field and 7 bits (for example, bit 0 to bit 6) in the pdcch-ConfigSIB1 information field.
As an example, when SSB-SubcarrierOffset is valued to 12 to 15, it indicates that the SSB is not associated with SIB1.
In response to the first SSB being associated with SIB1, the QCL parameter may be indicated in the second indication manner. Specifically, as shown in
Furthermore, other information may be born through the left bits in the information field of the PBCH. For example, the information of the CORESET and searchspacezero may be indicated through other 6 bits (for example, bit 0 to bit 5) in the pdcch-ConfigSIB1 information field.
In response to the first SSB being not associated with SIB1, the QCL parameter may be indicated in the first indication manner. Specifically, as shown in
Furthermore, the first SSB may further include the indication information of the frequency-domain position of the second SSB. As an example, the information field that bears the indication information of the frequency-domain position of the second SSB may include 4 bits (bit 0 to bit 3) in the SSB-SubcarrierOffset information field and 7 bits (for example, bit 0 to bit 6) in the pdcch-ConfigSIB1 information field.
As an example, when SSB-SubcarrierOffset is valued to 12 to 15, it indicates that the SSB is not associated with SIB1.
In response to the first SSB being associated with SIB1, the QCL parameter may be indicated in the second indication manner. Specifically, as shown in
Furthermore, other information may be born through the left bits in the information field of the PBCH. For example, the information of the CORESET and searchspacezero may be indicated through the 8 bits (for example, bit 0 to bit 7) in the pdcch-ConfigSIB1 information field. As such, the meaning of the pdcch-ConfigSIB1 information field in the NR-U system may be the same as that in the NR system.
In response to the first SSB being not associated with SIB1, the QCL parameter may be indicated in the first indication manner. Specifically, as shown in
Furthermore, the first SSB may further include the indication information of the frequency-domain position of the second SSB. As an example, the information field that bears the indication information of the frequency-domain position of the second SSB may include 8 bits (bit 0 to bit 7) in the pdcch-ConfigSIB1 information field.
As an example, when SSB-SubcarrierOffset is valued to 12 to 15, it indicates that the SSB is not associated with SIB1.
In response to the first SSB being associated with SIB1, the QCL parameter may be indicated in the second indication manner. Specifically, as shown in
Furthermore, other information may be born through the left bits in the information field of the PBCH. For example, the information of the CORESET and searchspacezero may be indicated through the left 7 bits (for example, bit 0 to bit 6) in the pdcch-ConfigSIB1 information field.
It is to be understood that the indication manners shown in embodiment 2-1 to embodiment 2-4 are merely examples, and the first indication manner and the second indication manner may also be combinations of other indication manners. For example, the first indication manner is the indication manner shown in
It is also to be understood that, in the embodiment of the disclosure, a position of 1 bit or 2 bits in the information field may be any position, and no limits are made thereto in the embodiment of the disclosure. The 1 bit in the pdcch-ConfigSIB1 information field may be bit 0 or bit 7 in the pdcch-ConfigSIB1 information field or may be another bit.
Moreover, when the QCL parameter is indicated by combining at least two bits, positions of the at least two bits in the indication information are not specifically limited. For example, when the QCL parameter is indicated through 1 bit in the pdcch-ConfigSIB1 information field and 1 bit in the subCarrierSpacingCommon information field, the 1 bit in the pdcch-ConfigSIB1 information field may be a higher bit, or, the 1 bit in the subCarrierSpacingCommon information field may be a higher bit. No limits are made thereto in the embodiment of the disclosure. The embodiment of the disclosure is intended to describe the information field that bears the indication information of the QCL parameter and the number of bits occupied by the indication information in the information field, and a specific sequence of the bits is not limited.
In embodiment 2, the network device may determine different indication manners (or different bearing manners) for the indication information of the QCL parameter in the PBCH based on the SIB1 association indication information, which is favorable for ensuring that the terminal device correctly receives the indication information of the QCL parameter.
Furthermore, in response to the first SSB being not associated with SIB1, the terminal device may still obtain the indication information of the QCL parameter, thereby improving the performance of receiving the second SSB. Moreover, the network device may indicate the QCL parameter in different indication manners based on whether the SSB is associated with SIB1, so that a conflict caused by overlapping between the information field for the indication information of the frequency-domain position of the second SSB and the information field for the indication information of the QCL parameter may be avoided.
The method for wireless communication according to the embodiment of the disclosure is described above in combination with
In S310, the terminal device receives a first SSB, the first SSB including SIB1 association indication information, and the SIB1 association indication information being configured to indicate whether the first SSB is associated with SIB1.
In S320, the terminal device determines whether the first SSB bears indication information of a QCL parameter and/or an indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1.
In some embodiments, the operation that the terminal device determines whether the first SSB bears the indication information of the QCL parameter and/or the indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1 may include the following operations.
In response to the first SSB being not associated with SIB1, it is determined that the first SSB does not include the indication information of the QCL parameter.
In response to the first SSB being associated with SIB1, it is determined that the first SSB includes the indication information of the QCL parameter.
In some embodiments, the method may further include the following operation.
When the first SSB includes the indication information of the QCL parameter, it is determined that the indication manner for the QCL parameter in the first SSB is a specific indication manner.
In some embodiments, the specific indication manner may be any one of following indication manners:
In some embodiments, the operation that the terminal device determines whether the first SSB bears the indication information of the QCL parameter and/or the indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1 may include the following operations.
In response to the first SSB being not associated with SIB1, it is determined that the indication manner for the QCL parameter in the first SSB is a first indication manner; or,
In some embodiments, bit fields used for bearing the indication information of the QCL parameter in the first indication manner and the second indication manner are the same.
In some embodiments, the bit fields used for bearing the indication information of the QCL parameter in the first indication manner and the second indication manner are at least partially different.
In some embodiments, the first indication manner may be any one of following indication manners:
In some embodiments, K is 2;
In some embodiments, the second indication manner may be any one of following indication manners:
In some embodiments, K is 2;
In some embodiments, in response to the first SSB being not associated with SIB1, the first SSB may further include indication information of a frequency-domain position of a second SSB.
In some embodiments, the frequency-domain position of the second SSB may be indicated through N bits in the SSB-SubcarrierOffset information field and M bits in the pdcch-ConfigSIB1 information field in the PBCH of the first SSB, N and M being positive integers.
In some embodiments, N is 4 or 5, and M is 6, 7, or 8.
The method embodiments of the disclosure are described above in combination with
The determination module 410 is configured to determine SIB1 association indication information of a first SSB, the SIB1 association indication information being configured to indicate whether the first SSB is associated with SIB1, and
The communication module 420 is configured to send the first SSB.
Optionally, in some embodiments, the determination module 410 is configured to:
Optionally, in some embodiments, the determination module 410 is further configured to:
Optionally, in some embodiments, the specific indication manner may be any one of following indication manners:
Optionally, in some embodiments, the determination module 410 is further configured to:
Optionally, in some embodiments, bit fields used for bearing the indication information of the QCL parameter in the first indication manner and the second indication manner are the same.
Optionally, in some embodiments, the bit fields used for bearing the indication information of the QCL parameter in the first indication manner and the second indication manner are at least partially different.
Optionally, in some embodiments, the first indication manner may be any one of following indication manners:
Optionally, in some embodiments, K is 2;
Optionally, in some embodiments, the second indication manner may be any one of following indication manners:
Optionally, in some embodiments, K is 2;
Optionally, in some embodiments, in response to the first SSB being not associated with SIB1, the first SSB may further include indication information of a frequency-domain position of a second SSB.
Optionally, in some embodiments, the frequency-domain position of the second SSB may be indicated through N bits in the SSB-SubcarrierOffset information field and M bits in the pdcch-ConfigSIB1 information field in the PBCH of the first SSB, N and M being positive integers.
Optionally, in some embodiments, N is 4 or 5, and M is 6, 7, or 8.
Optionally, in some embodiments, the communication module may be a communication interface or a transceiver, or a communication chip, or an input/output interface of a system on chip. The determination module may be one or more processors.
It is to be understood that the network device 400 according to the embodiment of the disclosure may correspond to the network device in the method embodiment of the disclosure, and the abovementioned and other operations and/or functions of each unit in the network device 400 are used to implement the corresponding flows executed by the network device in the method 200 shown in
The communication module 510 is configured to receive a first SSB, the first SSB including SIB1 association indication information, and the SIB1 association indication information being configured to indicate whether the first SSB is associated with SIB1.
The determination module 520 is configured to determine whether the first SSB bears indication information of a QCL parameter and/or an indication manner for the QCL parameter in the first SSB based on whether the first SSB is associated with SIB1.
Optionally, in some embodiments, the determination module 520 is specifically configured to:
Optionally, in some embodiments, the determination module 520 is further configured to:
Optionally, in some embodiments, the specific indication manner may be any one of following indication manners:
Optionally, in some embodiments, the determination module 520 is further configured to:
Optionally, in some embodiments, bit fields used for bearing the indication information of the QCL parameter in the first indication manner and the second indication manner are the same.
Optionally, in some embodiments, the bit fields used for bearing the indication information of the QCL parameter in the first indication manner and the second indication manner are at least partially different.
Optionally, in some embodiments, the first indication manner may be any one of following indication manners:
Optionally, in some embodiments, K is 2;
Optionally, in some embodiments, the second indication manner may be any one of following indication manners:
Optionally, in some embodiments, K is 2;
Optionally, in some embodiments, in response to the first SSB being not associated with SIB1, the first SSB may further include indication information of a frequency-domain position of a second SSB.
Optionally, in some embodiments, the frequency-domain position of the second SSB may be indicated through N bits in the SSB-SubcarrierOffset information field and M bits in the pdcch-ConfigSIB1 information field in the PBCH of the first SSB, N and M being positive integers.
Optionally, in some embodiments, N is 4 or 5, and M is 6, 7, or 8.
Optionally, in some embodiments, the communication module may be a communication interface or a transceiver, or a communication chip, or an input/output interface of a system on chip. The determination module may be one or more processors.
It is to be understood that the terminal device 500 according to the embodiment of the disclosure may correspond to the terminal device in the method embodiment of the disclosure and the abovementioned and other operations and/or functions of each unit in the terminal device 500 are adopted to implement the corresponding flows executed by the terminal device in the method 300 shown in
Optionally, as shown in
The memory 620 may be an independent device independent of the processor 610 and may also be integrated into the processor 610.
Optionally, as shown in
The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennae, and the number of the antennae may be one or more.
Optionally, the communication device 600 may specifically be the network device of the embodiments of the disclosure, and the communication device 600 may implement corresponding flows implemented by the network device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
Optionally, the communication device 600 may specifically be the mobile terminal/terminal device of the embodiments of the disclosure, and the communication device 600 may implement corresponding flows implemented by the mobile terminal/terminal device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
Optionally, as shown in
The memory 720 may be an independent device independent of the processor 710 and may also be integrated into the processor 710.
Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with another device or chip, specifically acquiring information or data sent by the other device or chip.
Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with the other device or chip, specifically outputting information or data sent by the other device or chip.
Optionally, the chip may be applied to the network device of the embodiments of the disclosure, and the chip may implement corresponding flows implemented by the network device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
Optionally, the chip may be applied to the mobile terminal/terminal device of the embodiment of the disclosure, and the chip may implement corresponding flows implemented by the mobile terminal/terminal device in each method of the embodiment of the disclosure. For simplicity, elaborations are omitted herein.
It is to be understood that the chip mentioned in the embodiment of the disclosure may also be called a system-level chip, a system chip, a chip system, a system on chip, etc.
The terminal device 910 may be configured to realize corresponding functions realized by the terminal device in the method, and the network device 920 may be configured to realize corresponding functions realized by the network device in the method. For simplicity, elaborations are omitted herein.
It is to be understood that the processor in the embodiment of the disclosure may be an integrated circuit chip and has a signal processing capacity. In an implementation process, each step of the method embodiments may be completed by an integrated logical circuit of hardware in the processor or an instruction in a software form. The processor may be a universal processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or another Programmable Logic Device (PLD), a discrete gate or transistor logic device, and a discrete hardware component. Each method, step and logical block diagram disclosed in the embodiments of the disclosure may be implemented or executed. The universal processor may be a microprocessor, or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the disclosure may be directly embodied to be executed and completed by a hardware decoding processor or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be in a mature storage medium in this field such as a Random Access Memory (RAM), a flash memory, a Read-Only Memory (ROM), a Programmable ROM (PROM) or Electrically Erasable PROM (EEPROM), and a register. The storage medium is in a memory, and the processor reads information in the memory and completes the steps of the method in combination with hardware.
It can be understood that the memory in the embodiment of the disclosure may be a volatile memory or a nonvolatile memory, or may include both the volatile and nonvolatile memories. The nonvolatile memory may be a ROM, a PROM, an Erasable PROM (EPROM), an EEPROM, or a flash memory. The volatile memory may be a RAM and is used as an external high-speed cache. It is exemplarily but unlimitedly described that RAMs in various forms may be adopted, such as a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synchlink DRAM (SLDRAM), and a Direct Rambus RAM (DR RAM). It is to be noted that the memory of a system and method described in the disclosure is intended to include, but not limited to, memories of these and any other proper types.
It is to be understood that the memory is exemplarily but unlimitedly described. For example, the memory in the embodiments of the disclosure may also be an SRAM, a DRAM, an SDRAM, a DDR SDRAM, an ESDRAM, an SLDRAM, and a DR RAM. That is, the memory in the embodiments of the disclosure is intended to include, but not limited to, memories of these and any other proper types.
The embodiments of the disclosure also provide a computer-readable storage medium, which is configured to store a computer program.
Optionally, the computer-readable storage medium may be applied to a network device in the embodiments of the disclosure, and the computer program enables a computer to execute corresponding flows implemented by the network device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
Optionally, the computer-readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the disclosure, and the computer program enables a computer to execute corresponding flows implemented by the mobile terminal/terminal device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
The embodiments of the disclosure also provide a computer program product, which includes a computer program instruction.
Optionally, the computer program product may be applied to a network device in the embodiments of the disclosure, and the computer program instruction enables a computer to execute corresponding flows implemented by the network device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the disclosure, and the computer program instruction enables the computer to execute corresponding flows implemented by the mobile terminal/terminal device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
The embodiments of the disclosure also provide a computer program.
Optionally, the computer program may be applied to a network device in the embodiments of the disclosure, and the computer program runs in a computer to enable the computer to execute corresponding flows implemented by the network device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the disclosure, and the computer program runs in the computer to enable the computer to execute corresponding flows implemented by the mobile terminal/terminal device in each method of the embodiments of the disclosure. For simplicity, elaborations are omitted herein.
Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in the disclosure may be implemented by electronic hardware or a combination of computer software and the electronic hardware. Whether these functions are executed by hardware or software depends on specific disclosures and design constraints of the technical solutions. Professionals may realize the described functions for each specific disclosure by use of different methods, but such realization shall fall within the scope of the disclosure.
Those skilled in the art may clearly learn about that specific working processes of the system, apparatus and unit described above may refer to the corresponding processes in the method embodiment and will not be elaborated herein for convenient and brief description.
In some embodiments provided in the disclosure, it is to be understood that the disclosed system, apparatus, and method may be implemented in another manner. For example, the apparatus embodiment described above is only schematic, and for example, division of the units is only logic function division, and other division manners may be adopted during practical implementation. For example, multiple units or components may be combined or integrated into another system, or some characteristics may be neglected or not executed. In addition, coupling or direct coupling or communication connection between each displayed or discussed component may be indirect coupling or communication connection, implemented through some interfaces, of the apparatus or the units, and may be electrical and mechanical or adopt other forms.
The units described as separate parts may or may not be physically separated, and parts displayed as units may or may not be physical units, and namely may be in the same place, or may also be distributed to multiple network units. Part or all of the units may be selected to achieve the purposes of the solutions of the embodiments according to a practical requirement.
In addition, each function unit in each embodiment of the disclosure may be integrated into a processing unit, each unit may also physically exist independently, and two or more than two units may also be integrated into a unit.
When realized in form of software function unit and sold or used as an independent product, the function may also be stored in a computer-readable storage medium. Based on such an understanding, the technical solutions of the disclosure substantially or parts making contributions to the conventional art or part of the technical solutions may be embodied in form of software product, and the computer software product is stored in a storage medium, including a plurality of instructions configured to enable a computer device (which may be a personal computer, a server, a network device or the like) to execute all or part of the steps of the method in each embodiment of the disclosure. The storage medium includes various media capable of storing program codes such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above is only the specific implementation mode of the disclosure and not intended to limit the scope of protection of the disclosure. Any variations or replacements apparent to those skilled in the art within the technical scope disclosed by the disclosure shall fall within the scope of protection of the disclosure. Therefore, the scope of protection of the disclosure shall be subject to the scope of protection of the claims.
This application is a continuation of U.S. application Ser. No. 17/643,355 filed on Dec. 8, 2021, which is a continuation application of International Patent Application No. PCT/CN2019/117651 filed on Nov. 12, 2019. The entire contents of the above applications are incorporated herein by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 17643355 | Dec 2021 | US |
| Child | 18672987 | US | |
| Parent | PCT/CN2019/117651 | Nov 2019 | WO |
| Child | 17643355 | US |
