WO2024077501A1 - Procédé et appareil de détermination de puissance de liaison latérale - Google Patents

Procédé et appareil de détermination de puissance de liaison latérale Download PDF

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Publication number
WO2024077501A1
WO2024077501A1 PCT/CN2022/124729 CN2022124729W WO2024077501A1 WO 2024077501 A1 WO2024077501 A1 WO 2024077501A1 CN 2022124729 W CN2022124729 W CN 2022124729W WO 2024077501 A1 WO2024077501 A1 WO 2024077501A1
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WIPO (PCT)
Prior art keywords
terminal
power
psfch
resource pool
transmission
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PCT/CN2022/124729
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English (en)
Chinese (zh)
Inventor
周锐
Original Assignee
北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/124729 priority Critical patent/WO2024077501A1/fr
Priority to CN202280003508.XA priority patent/CN118104162A/zh
Publication of WO2024077501A1 publication Critical patent/WO2024077501A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to the field of wireless communication technology, and in particular to a method and device for determining power of a side link.
  • the physical sidelink feedback channel (PSFCH) is introduced to provide feedback to the terminal on the success or failure of the corresponding physical sidelink shared channel (PSSCH) transmission.
  • the network uses the configuration and pre-configuration method to send the maximum link limit power Pemax,c to the terminal as one of the upper limits of the PSFCH transmission power.
  • Pemax,c uses the value of the maximum transmission power (sl-maxTransPower) corresponding to the resource pool; when multiple resource pools are configured, Pemax,c uses the sum of the sl-maxTransPower corresponding to all resource pools.
  • this method is only applicable when there is a one-to-one correspondence between PSFCH and Resource Pool.
  • the terminal needs to transmit multiple PSFCHs on the same resource pool. If the terminal power is still limited according to the number of resource pools at this time, the configured terminal power may be too low, resulting in too low PSFCH transmission power, so that the receiving terminal cannot normally receive the result of PSFCH transmission.
  • the present disclosure provides a side link power determination method and device, which can make the terminal transmission power of the side link meet the power requirement of PSFCH transmission, so that the receiving terminal can normally receive the result of PSFCH transmission.
  • a first aspect of the present disclosure provides a method for determining power of a sidelink, the method being executed by a terminal and comprising:
  • the resource pool information including the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools;
  • the terminal transmission power is sent to a base station.
  • the method further includes:
  • First configuration information sent by a base station is received, where the first configuration information includes the resource pool information.
  • the method further includes:
  • Second configuration information sent by the base station is received, where the second configuration information includes the number of physical sidelink feedback channels PSFCH available in each resource pool in multiple resource pools, and the limited power of the terminal in each resource pool using PSFCH for transmission.
  • the method further includes:
  • the sum of the transmission power of each resource pool in the multiple resource pools is determined to be the maximum allowed power of the terminal configured by the high layer.
  • determining the terminal transmission power includes:
  • the terminal transmission power is determined within the power value interval.
  • a second aspect of the present disclosure provides a method for determining power of a sidelink, the method being executed by a base station and comprising:
  • the method further includes:
  • First configuration information is sent to the terminal, where the first configuration information includes resource pool information, and the resource pool information includes the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools.
  • the method further includes:
  • Second configuration information is sent to the terminal, where the second configuration information includes the number of physical sidelink feedback channels PSFCH available in each resource pool in multiple resource pools, and a limit power for the terminal in each resource pool to use PSFCH for transmission.
  • a third aspect of the present disclosure provides a terminal, the terminal comprising:
  • a processing module configured to determine resource pool information for sidelink transmission, wherein the resource pool information includes the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools;
  • the processing module is further used to determine the terminal transmission power
  • the sending module is used to send the terminal transmission power to the base station.
  • a fourth aspect of the present disclosure provides a base station, the base station comprising:
  • the receiving module is used to receive the terminal transmission power reported by the terminal.
  • the fifth aspect embodiment of the present disclosure provides a communication device, which includes: a transceiver; a memory; a processor, which is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method of the first aspect embodiment or the second aspect embodiment of the present disclosure.
  • the sixth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer executable instructions; after the computer executable instructions are executed by a processor, the method of the first aspect embodiment or the second aspect embodiment of the present disclosure can be implemented.
  • the sixth aspect embodiment of the present disclosure provides a communication system, including a base station and a terminal, wherein the terminal is used to execute the method as described in the first aspect embodiment of the present disclosure; and the base station is used to execute the method as described in the second aspect embodiment of the present disclosure.
  • the embodiment of the present disclosure provides a sidelink power determination method and device, which can comprehensively consider the number of physical sidelink feedback channels PSFCH in each resource pool of multiple resource pools for sidelink transmission when determining the terminal transmission power.
  • the terminal transmission power can be matched with the actual transmission power required by PSFCH in multiple resource pools, so that PSFCH transmission can meet the corresponding power requirements, thereby ensuring that the receiving terminal can normally receive the result of PSFCH transmission.
  • FIG1 is a schematic flow chart of a method for determining power of a sidelink according to an embodiment of the present disclosure
  • FIG2 is a schematic flow chart of a method for determining power of a sidelink according to an embodiment of the present disclosure
  • FIG3 is a schematic flow chart of a method for determining power of a sidelink according to an embodiment of the present disclosure
  • FIG4 is a schematic flow chart of a method for determining power of a sidelink according to an embodiment of the present disclosure
  • FIG5 is a schematic flow chart of a method for determining power of a sidelink according to an embodiment of the present disclosure
  • FIG6 is a timing diagram of a method for determining power of a side link according to an embodiment of the present disclosure
  • FIG7 is a block diagram of a sidelink power determination device according to an embodiment of the present disclosure.
  • FIG8 is a block diagram of a sidelink power determination device according to an embodiment of the present disclosure.
  • FIG9 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure.
  • the network adopts the configuration and pre-configuration method to send the terminal's maximum allowed power Pemax,c configured by the high-level configuration to the terminal as one of the upper limits of the power of PSFCH transmission.
  • Pemax,c uses the value of the maximum transmission power (sl-maxTransPower) corresponding to the resource pool; when multiple resource pools are configured, Pemax,c uses the sum of the sl-maxTransPower corresponding to all resource pools.
  • this method is only applicable when PSFCH and Resource Pool correspond one to one.
  • the terminal needs to transmit multiple PSFCHs on the same resource pool for one PSSCH. If the terminal power is still limited according to the number of resource pools at this time, it may cause the configured terminal power to be too low, resulting in too low PSFCH transmission power, so that the receiving terminal cannot normally receive the result of PSFCH transmission.
  • the present disclosure proposes a side link power determination method and device, which can make the terminal transmission power of the side link meet the power requirements of PSFCH transmission, so that the receiving terminal can normally receive the results of PSFCH transmission.
  • Fig. 1 shows a schematic flow chart of a method for determining power of a side link according to an embodiment of the present disclosure. As shown in Fig. 1, the method should be executed by a terminal, wherein the terminal may be a transmitting terminal in a side link transmission, and the embodiment may include the following steps.
  • Step 101 Determine resource pool information for sidelink transmission, where the resource pool information includes the number of physical sidelink feedback channels PSFCH of each resource pool in a plurality of resource pools.
  • sidelink (SL) communication is a technology in which a relay terminal uses the spectrum resources and access technology of the new radio (NR) to directly establish a connection with a remote terminal to transmit application layer data.
  • NR new radio
  • 5G fifth generation
  • V2X vehicle wireless communication technology
  • the physical sidelink feedback channel Physical Sidelink Feedback Channel, PSFCH
  • PSSCH Physical Sidelink Shared Channel
  • the configuration of one PSFCH occupies one symbol in the time domain and one resource block (Resource Block, RB) in the frequency domain.
  • the last 4 symbols of each time slot can be used to configure the transmission of PSFCH.
  • the specific configuration is GP, AGC, PSFCH, GP.
  • the configuration of the last 4 symbols of the frame containing PSFCH can be shown in Table 1:
  • PSFCH will occupy the second to last symbol.
  • one PSFCH only occupies one RB, and the number of RBs occupied by the entire Sidelink frame in the frequency domain is configured by the Resource Pool. Therefore, within the time of one PSFCH transmission opportunity (one symbol), the terminal can transmit multiple PSFCHs.
  • Each PSFCH can correspond to a different resource pool (Resource Pool).
  • the base station will first configure the time-frequency resources for the PSFCH of the terminal in the sidelink transmission. Accordingly, the terminal can determine the multiple resource pools for PSFCH transmission at a PSFCH transmission moment of the sidelink transmission, as well as the number of channels of the physical sidelink feedback channel PSFCH in each of the multiple resource pools.
  • a PSFCH transmission moment that is, a sidelink frame containing PSFCH has a total of N PSFCHs transmitted simultaneously, where these N PSFCHs have a total of R resource pools, and there are Ki PSFCH transmissions in resource pool Ri, satisfying
  • Step 102 Determine the terminal transmission power.
  • the terminal transmission power is the sum of the transmission powers of all PSFCHs sent by the terminal at a PSFCH transmission moment.
  • the present disclosure can determine the terminal transmission power based on the resource pool information of the sidelink transmission.
  • the resource pool information can also include the number of channels of the physical sidelink feedback channel PSFCH of each resource pool.
  • Step 103 Send the terminal transmission power to the base station.
  • the terminal can comprehensively consider the number of channels of the physical sidelink feedback channel PSFCH in each resource pool of the multiple resource pools for sidelink transmission when determining the terminal transmission power.
  • the terminal transmission power can be matched with the actual transmission power required by the PSFCH in the multiple resource pools, so that the PSFCH transmission can meet the corresponding power requirements, thereby ensuring that the receiving terminal can normally receive the result of the PSFCH transmission.
  • FIG2 shows a method for determining power of a side link according to an embodiment of the present disclosure, which is executed by a terminal, based on the embodiment shown in FIG1 , as shown in FIG2 , and may include the following steps.
  • Step 201 Receive first configuration information sent by a base station, where the first configuration information includes resource pool information, and the resource pool information includes the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools.
  • the first configuration information can be the PSFCH time-frequency resource configuration, which can include the specific transmission time and frequency of the PSFCH, as well as the resource pool on which the PSFCH is transmitted.
  • the terminal can statistically determine the number of PSFCH channels N that are simultaneously transmitted in the sidelink frame containing the PSFCH at a PSFCH transmission moment, and the R resource pools corresponding to these N PSFCHs.
  • Step 202 Receive second configuration information sent by the base station, where the second configuration information includes the number of physical sidelink feedback channels PSFCH available in each of the multiple resource pools and the limited power of the terminals in each resource pool using PSFCH for transmission.
  • the configuration information may be configured by the base station through high-level signaling, and the high-level signaling may include radio resource control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • the signaling may be sl-maxTransPower.
  • the base station may also send second configuration information about the resource pool to the terminal, the second configuration information indicating the number of physical sidelink feedback channels PSFCH available in each of R resource pools, and the restricted power of the terminal in each resource pool using PSFCH for transmission.
  • the terminal may determine the number of PSFCH channels available in each of all resource pools for PSFCH transmission at a PSFCH transmission moment, and the restricted power of the terminal in each resource pool using PSFCH for transmission.
  • Step 203 Determine the transmission power of a resource pool according to the number of PSFCH channels available in a resource pool and the limited power of a terminal in the resource pool using PSFCH for transmission.
  • Step 204 Determine that the sum of the transmission power of each resource pool in the multiple resource pools is the maximum allowed power of the terminal configured by the high layer.
  • the terminal can further calculate the maximum allowed power Pemax,c of the terminal configured by the high layer based on the above information determined:
  • Pemax,c is the maximum allowable power of the terminal configured by the high-level layer
  • R is the number of resource pools that transmit PSFCH simultaneously on a sidelink frame at a PSFCH transmission moment
  • P Ri is the limit power of the terminal corresponding to one (i-th) resource pool among the R resource pools for PSFCH transmission
  • Ki is the number of PSFCH channels available on one (i-th) resource pool Ri. That is, by calculating the transmission power of each resource pool among the R resource pools, the sum of the transmission powers of the R resource pools is further determined as the maximum allowable power of the terminal configured by the high-level layer.
  • the configuration and pre-configuration methods can be used to send the link Pemax,c to the terminal as one of the upper limits of the power of PSFCH transmission.
  • Pemax,c uses the value of the maximum transmit power (sl-maxTransPower) corresponding to the resource pool; when multiple resource pools are configured, Pemax,c uses the sum of the sl-maxTransPower corresponding to all resource pools, and then uses the calculated Pemax,c to determine the terminal transmission power.
  • this method is only applicable when PSFCH and Resource Pool correspond one-to-one.
  • Pemax,c can be comprehensively calculated based on the number of PSFCH channels available in each resource pool in the sidelink transmission and the limited power of PSFCH transmission used by the terminal corresponding to each resource pool. The calculated Pemax,c is further used to determine the terminal transmission power.
  • the power determination of the sidelink can be matched with the number of resource pools and the number of PSFCH transmissions in each resource pool, so that the power determination of the sidelink can better meet the actual power requirements of PSFCH transmission.
  • Step 205 Determine a power value range according to the maximum allowed power of the terminal configured by a high-level layer.
  • the lower power limit and the upper power limit can be determined according to the maximum allowed power of the terminal configured at a high level, and the power value range can be further determined according to the lower power limit and the upper power limit to determine the terminal transmission power in the power value range.
  • the lower power limit value determined by the terminal maximum allowable power Pemax,c configured by the high-level layer is PCMAX_L,f,c
  • the upper power limit value determined by the terminal maximum allowable power Pemax,c configured by the high-level layer is PCMAX_H,f,c .
  • PCMAX_L,f,c MIN ⁇ P emax, c,P PowerClass,V2X –MAX(MAX(MPR c ,A-MPR c )+DT IB,c ,P-MPR c ),P Regulatory,c ⁇
  • PCMAX_H,f,c MIN ⁇ P emax, c,P PowerClass,V2X ,P Regulatory,c ⁇
  • PCMAX_L,f,c is the lower power limit
  • PCMAX_H,f,c is the upper power limit
  • P emax, c is the maximum allowed power of the terminal configured by the high layer
  • P PowerClass, V2X –MAX(MAX(MPR c ,A-MPR c )+DT IB,c ,P-MPR c ) is the maximum limited power of the terminal itself
  • P Regulatory,c is the power limit required by regional regulations
  • P PowerClass,V2X is the nominal power of the terminal in the sidelink.
  • the power value range of the actual configured power PCMAX of the terminal can be obtained:
  • Step 206 Determine the terminal transmission power within the power value interval.
  • the terminal can select a power value within the power value range as the actual terminal transmission power.
  • the actual terminal transmission power is calculated based on the limited power of PSFCH transmission used by the terminal corresponding to each resource pool and the number of PSFCH channels available in each resource pool, the power determination of the side link can be adapted to the actual transmission of PSFCH, thereby meeting the power requirements of PSFCH transmission.
  • Step 207 Send the terminal transmission power to the base station.
  • the terminal when determining the terminal transmission power, the terminal can comprehensively calculate the terminal transmission power according to the restricted power of each resource pool corresponding to the terminal using PSFCH transmission in the sidelink transmission, and the number of channels of the physical side feedback channel PSFCH available in each resource pool.
  • the power determination of the sidelink can be matched with the number of resource pools and the number of PSFCH transmissions in each resource pool, so that the power determination of the sidelink can better meet the power requirements of PSFCH transmission, thereby ensuring that the receiving terminal can normally receive the result of PSFCH transmission.
  • Fig. 3 shows a schematic flow chart of a method for determining power of a side link according to an embodiment of the present disclosure. The method is executed by a terminal, based on the embodiments shown in Fig. 1 and Fig. 2, as shown in Fig. 3, and may include the following steps.
  • Step 301 Receive first configuration information sent by a base station, where the first configuration information includes resource pool information, and the resource pool information includes the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools.
  • the implementation process thereof can refer to the relevant description in step 201 of the embodiment, which will not be repeated here.
  • Step 302 Receive second configuration information sent by the base station, where the second configuration information includes the number of physical sidelink feedback channels PSFCH available in each of the multiple resource pools and the limited power of the terminals in each resource pool using PSFCH for transmission.
  • the implementation process thereof can refer to the relevant description in step 202 of the embodiment, which will not be repeated here.
  • Step 303 Determine the terminal transmission power.
  • Step 304 Send the terminal transmission power to the base station.
  • the terminal after determining the terminal transmission power, can further report the terminal transmission power to the base station, so that the base station configures the transmission power for the physical side feedback channel PSFCH of each resource pool that transmits simultaneously according to the terminal transmission power, wherein the transmission power of the PSFCH in each resource pool is the same.
  • Step 305 Receive the PSFCH transmission power sent by the base station, wherein the PSFCH transmission power is configured by the base station according to the terminal transmission power.
  • the base station obtains the PSFCH transmission power according to the terminal transmission power configuration and sends it to the terminal. Accordingly, the terminal can receive the PSFCH transmission power sent by the base station, and then transmit the PSFCH to the receiving terminal according to the PSFCH transmission power.
  • the terminal when determining the terminal transmission power, the terminal can comprehensively calculate the terminal transmission power according to the restricted power of each resource pool corresponding to the terminal using PSFCH transmission in the sidelink transmission, and the number of channels of the physical side feedback channel PSFCH available in each resource pool.
  • the power determination of the sidelink can be matched with the number of resource pools and the number of PSFCH transmissions in each resource pool, so that the power determination of the sidelink can better meet the power requirements of PSFCH transmission, thereby ensuring that the receiving terminal can normally receive the result of PSFCH transmission.
  • Fig. 4 is a flow chart of a method for determining power of a side link according to an embodiment of the present disclosure. The method is executed by a base station, and the method may include the following steps.
  • Step 401 Receive terminal transmission power reported by a terminal.
  • the terminal may first determine the resource pool information of the sidelink transmission, and then determine the terminal transmission power based on the resource pool information. After calculating the terminal transmission power, the terminal may further report the terminal transmission power to the base station. Accordingly, for the embodiment of the present disclosure, the base station may receive the terminal transmission power reported by the terminal.
  • the terminal when the terminal determines the terminal transmission power based on the resource pool information, the terminal may first calculate the maximum allowable power of the terminal configured by the high-level configuration according to the number of PSFCH channels available in the resource pool and the limited power of the terminal corresponding to the resource pool using PSFCH transmission, and then determine the power value interval according to the maximum allowable power of the terminal configured by the high-level configuration, and finally determine the terminal transmission power in the power value interval.
  • the specific implementation process can be found in the relevant descriptions in steps 203 to 206 of the embodiment, which will not be repeated here.
  • the base station can receive the terminal transmission power uploaded by the terminal, wherein the terminal transmission power is obtained by comprehensively considering the number of channels of the physical sidelink feedback channel PSFCH in each resource pool in multiple resource pools for sidelink transmission.
  • the terminal transmission power can be matched with the actual transmission power required by the PSFCH in multiple resource pools, so that the PSFCH transmission can meet the corresponding power requirements, thereby ensuring that the receiving terminal can normally receive the result of the PSFCH transmission.
  • Fig. 5 shows a schematic flow chart of a method for determining power of a side link according to an embodiment of the present disclosure. The method is executed by a base station, based on the embodiment shown in Fig. 4, as shown in Fig. 5, and may include the following steps.
  • Step 501 Send first configuration information to a terminal, where the first configuration information includes resource pool information, and the resource pool information includes the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools.
  • the first configuration information may be the PSFCH time-frequency resource configuration
  • the PSFCH time-frequency resource configuration may include the specific transmission time and frequency of the PSFCH, as well as the resource pool on which it is transmitted.
  • the terminal can statistically determine the number of PSFCH channels N that are simultaneously transmitted in the sidelink frame containing the PSFCH at a PSFCH transmission moment, and the R resource pools corresponding to these N PSFCHs according to the PSFCH time-frequency resource configuration.
  • Step 502 Send second configuration information to the terminal, where the second configuration information includes the number of physical sidelink feedback channels PSFCH available in each of the multiple resource pools and the limited power of the terminal in each resource pool using PSFCH for transmission.
  • the second configuration information includes the number of physical sidelink feedback channels PSFCH available in each of the multiple resource pools and the limited power of the terminal in each resource pool using PSFCH for transmission.
  • the base station can send configuration information indicating the resource pool about the PSFCH transmission power limit to the terminal through high-level signaling.
  • the high-level signaling may include Radio Resource Control (RRC) signaling, and exemplarily, the signaling may be sl-maxTransPower.
  • RRC Radio Resource Control
  • the base station may also send second configuration information about the resource pool to the terminal, where the second configuration information indicates the number of physical side feedback channels PSFCH available in each of R resource pools, and the restricted power of PSFCH transmission used by the terminal in each resource pool. Accordingly, the terminal can determine the number of PSFCH channels available in each resource pool among all resource pools for PSFCH transmission at a PSFCH transmission moment, and the restricted power of PSFCH transmission used by the terminal in each resource pool.
  • Step 503 Receive the terminal transmission power reported by the terminal.
  • the terminal can further calculate the maximum allowable power of the terminal configured by the high-level layer according to the limited power and the number of PSFCH channels, and then determine the power value range according to the maximum allowable power of the terminal configured by the high-level layer, and finally determine the terminal transmission power according to the power value range.
  • the specific implementation process can be found in the relevant descriptions in steps 203 to 206 of the embodiment, which will not be repeated here.
  • the terminal can report the terminal transmission power to the base station. Accordingly, for the embodiment of the present disclosure, the base station can receive the terminal transmission power reported by the terminal.
  • Step 504 Configure the PSFCH transmission power according to the terminal transmission power, and send the PSFCH transmission power to the terminal.
  • the base station after receiving the terminal transmission power reported by the terminal, can configure the transmission power for the physical side feedback channel PSFCH of each resource pool according to the terminal transmission power.
  • the PSFCH transmission power configured according to the terminal transmission power can be adapted to the actual transmission of PSFCH and can meet the power requirement of PSFCH transmission.
  • the base station can configure the transmission power of PSFCH according to the terminal transmission power after receiving the terminal transmission power obtained by comprehensive calculation based on the restricted power of PSFCH transmission used by the terminal for each resource pool corresponding to the terminal in the side link transmission and the number of channels of the physical side feedback channel PSFCH available for each resource pool.
  • the power determination of the side link can be matched with the number of resource pools and the number of PSFCH transmissions in each resource pool, so that the power determination of the side link can better meet the power requirements of PSFCH transmission, thereby ensuring that the receiving terminal can normally receive the result of PSFCH transmission.
  • Fig. 6 is a timing diagram of a sidelink power determination method according to an embodiment of the present disclosure.
  • the method is applied to a satellite communication system for determining the power of a sidelink, the system comprising: a terminal, a base station, the base station sends first configuration information to the terminal, the first configuration information includes resource pool information, the resource pool information includes the number of channels of the physical sidelink feedback channel PSFCH of each resource pool in multiple resource pools; the base station sends second configuration information to the terminal, the second configuration information includes the number of channels of the physical sidelink feedback channel PSFCH available for each resource pool in multiple resource pools, and the limited power of the terminal using PSFCH transmission in each resource pool; the terminal calculates the terminal transmission power according to the limited power and the number of available PSFCH channels; the terminal sends the terminal transmission power to the base station; the base station configures the PSFCH transmission power according to the terminal transmission power, and sends the PSFCH transmission power to the terminal.
  • the method includes the following steps.
  • Step 601 A base station sends first configuration information to a terminal.
  • the first configuration information includes resource pool information.
  • the resource pool information includes the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools.
  • the first configuration information may be a PSFCH time-frequency resource configuration, which may include the specific transmission time and frequency of the PSFCH, as well as the resource pool on which the PSFCH is transmitted. Based on this, after receiving the PSFCH time-frequency resource configuration in the sidelink transmission, the terminal may statistically determine the number of PSFCH channels N that are simultaneously transmitted in the sidelink frame containing the PSFCH at a PSFCH transmission moment, and the R resource pools corresponding to the N PSFCHs. There are K i PSFCH transmissions on the resource pool Ri, satisfying
  • Step 602 The base station sends second configuration information to the terminal, where the second configuration information includes the number of physical sidelink feedback channels PSFCH available in each of the multiple resource pools and the limited power of the terminal in each resource pool using PSFCH for transmission.
  • the second configuration information includes the number of physical sidelink feedback channels PSFCH available in each of the multiple resource pools and the limited power of the terminal in each resource pool using PSFCH for transmission.
  • the base station may send second configuration information about the resource pool to the terminal through high-level signaling, where the second configuration information indicates the number of physical sidelink feedback channels PSFCH available in each of the R resource pools, and the limited power of the terminal in each resource pool using PSFCH for transmission.
  • the high-level signaling may include Radio Resource Control (RRC) signaling, and exemplarily, the signaling may be sl-maxTransPower.
  • RRC Radio Resource Control
  • Step 603 The terminal calculates the terminal transmission power according to the limited power and the number of available PSFCH channels.
  • the terminal can further calculate the maximum allowed power of the terminal configured by the high-level layer according to the restricted power and the number of PSFCH channels, and then determine the power value interval according to the maximum allowed power of the terminal configured by the high-level layer, and finally determine the terminal transmission power according to the power value interval.
  • the specific implementation process can be referred to the relevant description in steps 203 to 206 of the embodiment, which will not be repeated here.
  • Step 604 The terminal sends the terminal transmission power to the base station.
  • the terminal may further report the terminal transmission power to the base station so that the base station configures the transmission power for each PSFCH transmitted simultaneously according to the terminal transmission power.
  • Step 605 The base station configures the PSFCH transmission power according to the terminal transmission power, and sends the PSFCH transmission power to the terminal.
  • the base station after receiving the terminal transmission power reported by the terminal, the base station can configure the transmission power for each PSFCH transmitted simultaneously according to the terminal transmission power, and send the configured PSFCH transmission power to the terminal so that the PSFCH is transmitted to the receiving terminal according to the PSFCH transmission power.
  • the terminal when determining the terminal transmission power, the terminal can comprehensively calculate the terminal transmission power according to the restricted power of each resource pool corresponding to the terminal using PSFCH transmission in the sidelink transmission, and the number of channels of the physical side feedback channel PSFCH available in each resource pool.
  • the power determination of the sidelink can be matched with the number of resource pools and the number of PSFCH transmissions in each resource pool, so that the power determination of the sidelink can better meet the power requirements of PSFCH transmission, thereby ensuring that the receiving terminal can normally receive the result of PSFCH transmission.
  • the methods provided by the embodiments of the present application are introduced from the perspectives of the terminal and the base station, respectively.
  • the terminal and the base station may include a hardware structure and a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • a function of the functions may be performed in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • the present disclosure also provides a side link power determination device. Since the side link power determination device provided in the embodiment of the present disclosure corresponds to the side link power determination method provided in the above-mentioned embodiments, the implementation method of the side link power determination method is also applicable to the side link power determination device provided in this embodiment and will not be described in detail in this embodiment.
  • FIG. 7 is a schematic diagram of the structure of a terminal 700 provided according to an embodiment of the present disclosure.
  • the terminal 700 may include:
  • the processing module 710 may be configured to determine resource pool information for sidelink transmission, the resource pool information including the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools;
  • the processing module 710 may also be used to determine the terminal transmission power
  • the sending module 720 may be configured to send the terminal transmission power to the base station.
  • the terminal 700 further includes: a receiving module 730;
  • the receiving module 730 may be configured to receive first configuration information sent by a base station, where the first configuration information includes resource pool information.
  • the receiving module 730 can also be used to receive second configuration information sent by the base station, the second configuration information including the number of channels of the physical side feedback channel PSFCH available in each resource pool in multiple resource pools, and the limited power of the terminal in each resource pool using PSFCH transmission.
  • the processing module 710 can also be used to determine the transmission power of a resource pool based on the number of PSFCH channels available in a resource pool and the limited power of a resource pool terminal using PSFCH transmission; and determine that the sum of the transmission power of each resource pool in multiple resource pools is the maximum allowed power of the terminal configured by the high layer.
  • the processing module 710 may also be used to determine a power value range according to a maximum allowed power of the terminal configured by a high layer; and determine the terminal transmission power within the power value range.
  • FIG8 is a schematic diagram of the structure of a base station 800 provided according to an embodiment of the present disclosure.
  • the base station 800 may include:
  • the receiving module 810 may be configured to receive terminal transmission power reported by the terminal.
  • the base station 800 further includes: a sending module 820;
  • the sending module 820 may be configured to send first configuration information to the terminal, where the first configuration information includes resource pool information, and the resource pool information includes the number of channels of a physical sidelink feedback channel PSFCH of each resource pool in a plurality of resource pools.
  • the sending module 820 can also be used to send second configuration information to the terminal, the second configuration information including the number of channels of the physical side feedback channel PSFCH available in each resource pool in multiple resource pools, and the limited power of the terminal in each resource pool using PSFCH transmission.
  • FIG. 9 is a schematic diagram of the structure of a communication device 900 provided in an embodiment of the present application.
  • the communication device 900 can be a network device, or a user device, or a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the user device to implement the above method.
  • the device can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.
  • the communication device 900 may include one or more processors 901.
  • the processor 901 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and the communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.
  • the communication device 900 may further include one or more memories 902, on which a computer program 904 may be stored, and the processor 901 executes the computer program 904 so that the communication device 900 performs the method described in the above method embodiment.
  • data may also be stored in the memory 902.
  • the communication device 900 and the memory 902 may be provided separately or integrated together.
  • the communication device 900 may further include a transceiver 905 and an antenna 906.
  • the transceiver 905 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function.
  • the transceiver 905 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., and is used to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is used to implement a transmitting function.
  • the communication device 900 may further include one or more interface circuits 907.
  • the interface circuit 907 is used to receive code instructions and transmit them to the processor 901.
  • the processor 901 executes the code instructions to enable the communication device 900 to execute the method described in the above method embodiment.
  • the processor 901 may include a transceiver for implementing the receiving and sending functions.
  • the transceiver may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated.
  • the above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.
  • the processor 901 may store a computer program 903, which runs on the processor 901 and enables the communication device 900 to perform the method described in the above method embodiment.
  • the computer program 903 may be fixed in the processor 901, in which case the processor 901 may be implemented by hardware.
  • the communication device 900 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiment.
  • the processor and transceiver described in the present application can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS N-type metal oxide semiconductor
  • PMOS P-type metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device described in the above embodiments may be a network device or a user device, but the scope of the communication device described in the present application is not limited thereto, and the structure of the communication device may not be limited by FIG. 9.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be:
  • the IC set may also include a storage component for storing data and computer programs;
  • ASIC such as modem
  • the communication device can be a chip or a chip system
  • the communication device can be a chip or a chip system
  • the schematic diagram of the chip structure shown in Figure 10 includes a processor 1001 and an interface 1002.
  • the number of processors 1001 can be one or more, and the number of interfaces 1002 can be multiple.
  • the chip further includes a memory 1003, and the memory 1003 is used to store necessary computer programs and data.
  • the present application also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.
  • the present application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above-mentioned method embodiments.
  • the computer program product includes one or more computer programs.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer program can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media integrated. Available media can be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD)), etc.
  • At least one in the present application can also be described as one or more, and a plurality can be two, three, four or more, which is not limited in the present application.
  • the technical features in the technical feature are distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D”, etc., and there is no order of precedence or size between the technical features described by the "first”, “second”, “third”, “A”, “B”, “C” and “D”.
  • machine-readable medium and “computer-readable medium” refer to any computer program product, apparatus, and/or device (e.g., disk, optical disk, memory, programmable logic device (PLD)) for providing machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal.
  • machine-readable signal refers to any signal for providing machine instructions and/or data to a programmable processor.
  • the systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components.
  • the components of the system may be interconnected by any form or medium of digital data communication (e.g., a communications network). Examples of communications networks include: a local area network (LAN), a wide area network (WAN), and the Internet.
  • a computer system may include clients and servers.
  • Clients and servers are generally remote from each other and usually interact through a communication network.
  • the relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship to each other.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation se rapporte au domaine technique des communications sans fil. L'invention concerne un procédé et un appareil permettant de déterminer une puissance de liaison latérale. Dans le procédé et l'appareil de détermination d'une puissance de liaison latérale selon la présente divulgation, le procédé comprend les étapes suivantes : un terminal détermine des informations de groupe de ressources pour une transmission de liaison latérale, les informations de groupe de ressources comprenant un nombre de canaux de canaux de rétroaction de liaison latérale physique (PSFCH) de chaque groupe de ressources parmi une pluralité de groupes de ressources ; déterminer une puissance de transmission de terminal ; et envoyer la puissance de transmission de terminal à une station de base. La présente divulgation peut permettre à une puissance de transmission de terminal de liaison latérale de satisfaire l'exigence de puissance pour une transmission de PSFCH, de telle sorte qu'un terminal de réception peut normalement recevoir un résultat de transmission de PSFCH.
PCT/CN2022/124729 2022-10-11 2022-10-11 Procédé et appareil de détermination de puissance de liaison latérale WO2024077501A1 (fr)

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PCT/CN2022/124729 WO2024077501A1 (fr) 2022-10-11 2022-10-11 Procédé et appareil de détermination de puissance de liaison latérale
CN202280003508.XA CN118104162A (zh) 2022-10-11 2022-10-11 侧行链路的功率确定方法及装置

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