WO2024037492A1 - 直连通信方法及装置 - Google Patents

直连通信方法及装置 Download PDF

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Publication number
WO2024037492A1
WO2024037492A1 PCT/CN2023/112879 CN2023112879W WO2024037492A1 WO 2024037492 A1 WO2024037492 A1 WO 2024037492A1 CN 2023112879 W CN2023112879 W CN 2023112879W WO 2024037492 A1 WO2024037492 A1 WO 2024037492A1
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Prior art keywords
direct
channel
direct communication
communication channels
channels
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PCT/CN2023/112879
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English (en)
French (fr)
Inventor
邢卫民
卢有雄
苗婷
胡宇洲
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中兴通讯股份有限公司
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Publication of WO2024037492A1 publication Critical patent/WO2024037492A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a direct communication method and device.
  • Direct-connect communication is wireless communication performed directly between two or more terminal devices.
  • two or more terminal devices that are geographically close to each other can communicate directly without passing through any network device.
  • Direct-connect communication has a wide range of applications in daily life; for example, direct-connect communication methods include but are not limited to device-to-device (D2D) communication, such as early warning communication for disasters such as earthquakes and fires, and vehicle-to-all communication. (vehicle to everything, V2X) communication, such as remote driving, driverless driving, etc.
  • D2D device-to-device
  • V2X vehicle to everything
  • some embodiments of the present disclosure provide a direct communication method.
  • the direct communication method includes: selecting M second direct communication channels from N first direct communication channels to be received, and determining the transmission of each of the M second direct communication channels. Power, the sum of the transmit powers of the M second directly connected communication channels is less than or equal to the maximum transmit power of the terminal equipment, N is a positive integer, M is a positive integer less than or equal to N; based on the M second directly connected communication channels The transmit power of each second directly connected communication channel is used to transmit M second directly connected communication channels.
  • the M second direct communication channels include NR direct data channels and/or N 2 direct feedback channels; N 1 is equal to N-1, N 2 is less than or equal to min(N 1 , N max ), and N max is the maximum number of direct feedback channels that the terminal device supports sending simultaneously.
  • the transmit power of each of the M second direct communication channels is equal to the corresponding required power.
  • the M second direct communication channels include NR direct data channels and N 1 direct feedback channels.
  • the second direct communication channel includes NR direct data and the first N 2 direct feedback channels in the first arrangement order.
  • the first arrangement order is N 1 direct feedback channels, which are arranged in the order of priority from high to low. And get the sort order.
  • M The second direct communication channel includes the first M first direct communication channels in the second arrangement order, and the second arrangement order is obtained by arranging the N first direct communication channels in order from high to low priority. Order.
  • M Second direct connection The communication channel includes an NR direct data channel and N max direct feedback channels.
  • the M second The direct communication channel includes the NR direct data channel and the first N 2 direct feedback channels in the first arrangement order.
  • the first arrangement order is the N 1 direct feedback channels, which are arranged in order from high to low priority. The resulting sort order.
  • the Mth The two direct communication channels include the first M first direct communication channels in the second arrangement order, and the second arrangement order is an arrangement obtained by arranging the N first direct communication channels in order from high to low priority. order.
  • each of the M second direct communication channels uses the same power spectral density for transmission.
  • the transmit power of each of the N 2 direct feedback channels is less than Or equal to X 1 times the maximum transmit power of the terminal equipment. The sum of the channel bandwidths.
  • the transmit power of the directly connected data channel is less than or equal to X2 times the maximum transmit power of the terminal device, and X2 is equal to the ratio of the bandwidth of the directly connected data channel to the first total bandwidth.
  • the transmitting capability of the terminal device supports transmitting M second directly connected communication channels.
  • the M second direct communication channels are in the third arrangement sequence without exceeding the receiving capability of the terminal device.
  • the first M first direct communication channels, and the third arrangement order is obtained by arranging the N first direct communication channels.
  • the third arrangement order is obtained by arranging the N first direct communication channels based on the priority of each first direct communication channel; the first direct communication channel with a high priority is ranked in the third arrangement. Prior to the first direct communication channel with a lower priority in the order.
  • the third arrangement order is obtained by arranging the N first direct communication channels based on the priority and transmission level of each first direct communication channel; the first direct communication channel with a higher transmission level is in The first direct communication channel with a lower transmission level is located before the first direct communication channel with a lower transmission level in the third arrangement order; and, for the two first direct communication channels with the same transmission level, the first direct communication channel with a high priority is located in the third arrangement order. in front of the first direct communication channel with lower priority.
  • the transmission level satisfies one or more of the following rules: the transmission level of the direct synchronization channel is higher than the transmission level of the direct data channel; the transmission level of the direct data channel is higher than the transmission level of the direct feedback channel Transmission level; the transmission level of the NR direct communication channel is higher or lower than the transmission level of the LTE direct communication channel; or the transmission level of the direct feedback channel used to carry hybrid automatic repeat response information is higher than the transmission level used to carry collisions Indicates the transmit level of the direct feedback channel.
  • the above method further includes: obtaining the receiving priority and the sending priority when multiple direct communication channels overlap in the time domain; the multiple direct communication channels include the N first to be sent The direct communication channel and the P third direct communication channels to be received, where P is a positive integer; based on the comparison result of the receiving priority and the sending priority, it is determined to perform a receiving operation or a sending operation.
  • the above-mentioned determination to perform a receiving operation or a sending operation based on the comparison result between the receiving priority and the sending priority includes: if the sending priority is higher than the receiving priority, determining to perform the sending operation; or, if the sending priority is higher If the priority is lower than the receive priority, it is determined to perform the receive operation; or, if the send priority is equal to the receive priority, it is determined to perform the send operation or the receive operation.
  • the transmission priority is the highest priority among the priorities of the N first direct communication channels.
  • the reception priority is the highest priority among the priorities of the P third direct communication channels; or, the reception priority is the third direct connection of all target types among the P third direct communication channels.
  • the target type includes one or more of the LTE direct data channel, LTE direct synchronization channel, NR direct synchronization channel or direct feedback channel.
  • the above method further includes: selecting K fourth directly connected communication channels from the P third directly connected communication channels, where K is a positive integer less than or equal to P; receiving K A fourth direct communication channel.
  • the K fourth directly connected communication channels are in the fourth arrangement sequence without exceeding the receiving capability of the terminal device.
  • the first K direct-connected communication channels, the fourth arrangement order is obtained by arranging the P third directly-connected communication channels.
  • the fourth arrangement order is obtained by arranging P third directly connected communication channels based on the priority of each third directly connected communication channel; the third directly connected communication channel with a high priority is ranked in the fourth arrangement. It is located before the third direct communication channel with lower priority in the sequence.
  • the fourth arrangement order is obtained by arranging the P third directly connected communication channels based on the priority and reception level of each third directly connected communication channel; the third directly connected communication channel with a higher reception level is The third direct communication channel with a lower reception level is located before the third direct communication channel with a lower reception level in the fourth arrangement order; and, for the two third direct communication channels with the same reception level, the third direct communication channel with a high priority is in the fourth arrangement order. in front of the third direct communication channel with lower priority.
  • the transmission level satisfies one or more of the following rules: the reception level of the direct synchronization channel is higher than the reception level of the direct data channel; the reception level of the direct data channel is higher than the reception level of the direct feedback channel Reception level; the reception level of the NR direct communication channel is higher or lower than the reception level of the LTE direct communication channel; or the reception level of the direct feedback channel used to carry hybrid automatic repeat response information is higher than that used to carry collisions Indicates the reception level of the direct feedback channel.
  • the format of the direct feedback channel includes a first format and/or a second format; the time domain resources of the direct feedback channel in the first format occupy part of the symbols used for direct communication in one time slot; The time domain resources of the second-format direct-connect feedback channel occupy all the symbols used for direct-connect communication in one time slot.
  • the direct feedback channel is on the time slot used for transmitting the direct feedback channel. Transmit in secondary format.
  • the direct feedback channel is transmitted in the second format on time slots included in the resource pool for NR direct communications.
  • the frequency domain resources of the direct feedback channel of the second format on one time slot and the frequency domain resources of the NR direct data channel on the same time slot are located in different frequency domain locations.
  • some embodiments of the present disclosure provide a direct communication device.
  • the direct-connect communication device includes: a processing module for selecting M second direct-connect communication channels from N first direct-connect communication channels to be received, and determining each second direct-connect communication channel among the M second direct-connect communication channels.
  • the transmit power of the connected communication channel, the sum of the transmit power of the M second directly connected communication channels is less than or equal to the maximum transmit power of the terminal equipment, N is a positive integer, M is a positive integer less than or equal to N; the transmitting module is used Based on the transmitting power of each of the M second directly connected communication channels, the M second directly connected communication channels are transmitted.
  • the M second direct communication channels include NR direct data channels and/or N 2 direct feedback channels; N 1 is equal to N-1, N 2 is less than or equal to min(N 1 , N max ), and N max is the maximum number of direct feedback channels that the terminal device supports sending simultaneously.
  • the transmit power of each of the M second direct communication channels is equal to its corresponding required power.
  • the M second direct communication channels include NR direct data channels and N 1 direct feedback channels.
  • the second direct communication channel includes NR direct data and the first N 2 direct feedback channels in the first arrangement order.
  • the first arrangement order is N 1 direct feedback channels, which are arranged in the order of priority from high to low. And get the sort order.
  • M The second direct communication channel includes the first M first direct communication channels in the second arrangement order, and the second arrangement order is obtained by arranging the N first direct communication channels in order from high to low priority. Order.
  • the second direct communication channel includes an NR direct data channel and N max direct feedback channels.
  • the M second The direct communication channel includes the NR direct data channel and the first N 2 direct feedback channels in the first arrangement order.
  • the first arrangement order is the N 1 direct feedback channels, which are arranged in order from high to low priority. The resulting sort order.
  • the Mth The two direct communication channels include the first M first direct communication channels in the second arrangement order, and the second arrangement order is an arrangement obtained by arranging the N first direct communication channels in order from high to low priority. order.
  • each of the M second direct communication channels uses the same power spectral density for transmission.
  • the transmit power of each of the N 2 direct feedback channels is less than or equal to terminal X 1 times the maximum transmit power of the device, X 1 is equal to the ratio of the bandwidth of a direct feedback channel to the first total bandwidth, the first total bandwidth is the bandwidth of N 2 direct feedback channels and the bandwidth of the NR direct data channel Sum.
  • the transmit power of the directly connected data channel is less than or equal to X2 times the maximum transmit power of the terminal device, and X2 is equal to the ratio of the bandwidth of the directly connected data channel to the first total bandwidth.
  • the transmitting capability of the terminal device supports transmitting M second directly connected communication channels.
  • the M second direct communication channels are in the third arrangement sequence without exceeding the receiving capability of the terminal device.
  • the first M first direct communication channels, and the third arrangement order is obtained by arranging the N first direct communication channels.
  • the third arrangement order is obtained by arranging the N first direct communication channels based on the priority of each first direct communication channel; the first direct communication channel with a high priority is ranked in the third arrangement. Prior to the first direct communication channel with a lower priority in the order.
  • the third arrangement order is obtained by arranging the N first direct communication channels based on the priority and transmission level of each first direct communication channel; the first direct communication channel with a higher transmission level is in The first direct communication channel with a lower transmission level is located before the first direct communication channel with a lower transmission level in the third arrangement order; and, for the two first direct communication channels with the same transmission level, the first direct communication channel with a high priority is located in the third arrangement order. in front of the first direct communication channel with lower priority.
  • the transmission level satisfies one or more of the following rules: the transmission level of the direct synchronization channel is higher than the transmission level of the direct data channel; the transmission level of the direct data channel is higher than the transmission level of the direct feedback channel Transmission level; the transmission level of the NR direct communication channel is higher or lower than the transmission level of the LTE direct communication channel; or the transmission level of the direct feedback channel used to carry hybrid automatic repeat response information is higher than the transmission level used to carry collisions Indicates the transmit level of the direct feedback channel.
  • the above processing module is also used to obtain the receiving priority and the sending priority when multiple direct communication channels overlap in the time domain; the multiple direct communication channels include N to be sent The first direct communication channel and the P third direct communication channels to be received, where P is a positive integer; based on the comparison result of the receiving priority and the sending priority, it is determined to perform a receiving operation or a sending operation.
  • the above processing module is used to determine to perform a sending operation if the sending priority is higher than the receiving priority; or, if the sending priority is lower than the receiving priority, determine to perform a receiving operation; or, if the sending priority is Equal to the receiving priority, determine whether to perform a sending operation or a receiving operation.
  • the transmission priority is the highest priority among the priorities of the N first direct communication channels.
  • the reception priority is the highest priority among the priorities of the P third direct communication channels; or, the reception priority is the third direct connection of all target types among the P third direct communication channels.
  • the target type includes one or more of the LTE direct data channel, LTE direct synchronization channel, NR direct synchronization channel or direct feedback channel.
  • the above-mentioned processing module is also configured to select K fourth directly connected communication channels from the P third directly connected communication channels, where K is a positive integer less than or equal to P; Receive K fourth direct communication channels.
  • the K fourth directly connected communication channels are in the fourth arrangement sequence without exceeding the receiving capability of the terminal device.
  • the former K P directly connected communication channels, and the fourth arrangement sequence is obtained by arranging P third directly connected communication channels.
  • the fourth arrangement order is obtained by arranging P third directly connected communication channels based on the priority of each third directly connected communication channel; the third directly connected communication channel with a high priority is ranked in the fourth arrangement. It is located before the third direct communication channel with lower priority in the sequence.
  • the fourth arrangement order is obtained by arranging the P third directly connected communication channels based on the priority and reception level of each third directly connected communication channel; the third directly connected communication channel with a higher reception level is The third direct communication channel with a lower reception level is located before the third direct communication channel with a lower reception level in the fourth arrangement order; and, for the two third direct communication channels with the same reception level, the third direct communication channel with a high priority is in the fourth arrangement order. in front of the third direct communication channel with lower priority.
  • the transmission level satisfies one or more of the following rules: the reception level of the direct synchronization channel is higher than the reception level of the direct data channel; the reception level of the direct data channel is higher than the reception level of the direct feedback channel Reception level; the reception level of the NR direct communication channel is higher or lower than the reception level of the LTE direct communication channel; or the reception level of the direct feedback channel used to carry hybrid automatic repeat response information is higher than that used to carry collisions Indicates the reception level of the direct feedback channel.
  • the format of the direct feedback channel includes a first format and/or a second format; the time domain resources of the direct feedback channel in the first format occupy part of the symbols used for direct communication in one time slot; The time domain resources of the second-format direct-connect feedback channel occupy all the symbols used for direct-connect communication in one time slot.
  • the direct feedback channel is on the time slot used for transmitting the direct feedback channel. Transmit in secondary format.
  • the direct feedback channel is transmitted in the second format on time slots included in the resource pool for NR direct communications.
  • the frequency domain resources of the direct feedback channel of the second format on one time slot and the frequency domain resources of the NR direct data channel on the same time slot are located in different frequency domain locations.
  • some embodiments of the present disclosure provide a terminal device.
  • the terminal device includes a memory, a processor, and a computer program stored in the memory and executable on the processor.
  • the processor executes the computer program, it implements the direct communication described in any one of the embodiments of the present disclosure. method.
  • some embodiments of the present disclosure provide a computer-readable storage medium including computer instructions.
  • the terminal device is caused to execute any one of the direct communication methods provided by the embodiments of this application.
  • Figure 1 is a schematic structural diagram of a direct-connect communication system according to some embodiments.
  • Figure 2 is a resource configuration diagram of a time slot according to some embodiments.
  • Figure 3 is a resource configuration diagram of another time slot according to some embodiments.
  • Figure 4 is a schematic flowchart of a direct communication method according to some embodiments.
  • Figure 5 is a schematic flowchart of another direct communication method according to some embodiments.
  • Figure 6 is a schematic flowchart of yet another direct communication method according to some embodiments.
  • Figure 7 is a schematic structural diagram of a direct-connect communication device according to some embodiments.
  • Figure 8 is a schematic structural diagram of another direct-connect communication device according to some embodiments.
  • A/B can mean A or B.
  • A/B can mean A or B.
  • “And/or” in this article is just an association relationship describing associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: only A, only B, and A and B.
  • “at least one” means one or more
  • “plurality” means two or more. Words such as “first” and “second” do not limit the quantity and order of execution, and words such as “first” and “second” do not limit the number or order of execution.
  • Direct connection communication can also be called sidelink (SL) communication, side link communication, or side link communication, or PC5 interface link communication, or link communication between terminal devices.
  • Direct-connect communication is wireless communication performed directly between multiple terminal devices (for example, two terminal devices). In this direct-connect communication, multiple terminal devices that are geographically close to each other can communicate directly without passing through any network device.
  • Data transmission in direct-connect communication is different from typical cellular network communication.
  • Typical cellular network communication includes uplink (UL) transmission (that is, the terminal device sends data to the network device) and downlink (downlink, DL) Transmission (that is, the network device sends data to the terminal device).
  • Direct communication methods include but are not limited to device-to-device (D2D) communication, such as early warning communication for disasters such as earthquakes and fires, and vehicle-to-everything (V2X) communication, such as remote driving, unmanned Driving etc.
  • D2D device-to-device
  • V2X vehicle-to-everything
  • FIG. 1 shows a schematic structural diagram of a direct-connect communication system provided by an embodiment of the present disclosure.
  • the service data does not pass through the network-side device (that is, it does not pass through the connection between the terminal device and the network-side device shown by the dotted line in Figure 1).
  • cellular link forwarding but is directly transmitted from the data source terminal device (terminal device 1 as shown in Figure 1) to the target terminal device (terminal device 2 as shown in Figure 1) through the side link.
  • This mode of direct communication between terminal equipment 1 and terminal equipment 2 has characteristics that are obviously different from the traditional cellular system communication mode: for short-range communication users who can apply direct connection communication, direct connection communication not only saves wireless spectrum resources, and reduces the data transmission pressure on the core network, can reduce system resource occupation, increase the spectrum efficiency of cellular communication systems, reduce terminal equipment transmission power consumption, and save network operating costs to a large extent.
  • terminal equipment in the direct communication system may also be called a terminal, user equipment (UE), mobile station, mobile terminal, etc.
  • Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality terminal devices, augmented reality terminal devices, wireless terminals in industrial control, wireless terminals in driverless driving, wireless terminals in remote surgery, transportation safety Wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of the present disclosure do not limit the technology and device form used by the terminal device. Certainly.
  • the direct communication channels in the embodiments of the present disclosure can be classified from the communication standard into long term evolution (LTE) direct communication channels, new radio (new radio, NR) direct communication channels, Or direct communication channels under future networks (such as 6G).
  • LTE long term evolution
  • NR new radio
  • the direct communication channel in the embodiment of the present disclosure can be functionally classified into a direct data channel, a direct synchronization channel and a direct feedback channel.
  • the direct data channel is a channel used to transmit data or control information.
  • the directly connected data channel may include a physical sidelink control channel (PSCCH) and a physical sidelink sharing channel (PSSCH).
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink sharing channel
  • the direct synchronization channel is a channel used to implement time synchronization.
  • the direct synchronization channel may include a physical sidelink broadcast channel (PSBCH), a primary sidelink synchronization signal (PSSS) and/or a sidelink secondary synchronization signal (PSSS). secondary sidelink synchronization signal, SSSS).
  • PSBCH physical sidelink broadcast channel
  • PSSS primary sidelink synchronization signal
  • PSSS sidelink secondary synchronization signal
  • SSSS secondary sidelink synchronization signal
  • the direct feedback channel is a channel used to transmit the feedback channel.
  • the feedback information may be hybrid automatic repeat request-ACK (HARQ-ACK) information, conflict indication, etc., and no further information is provided for this. limited.
  • the direct feedback channel may include a physical sidelink feedback channel (PSFCH).
  • the signal type of the LTE direct communication channel includes an LTE direct data channel and an LTE direct synchronization channel.
  • the signal types of the NR direct communication channel include NR direct data channel, NR direct synchronization channel and direct feedback channel.
  • NR direct communication uses LTE in non-standalone (NSA) mode. technical infrastructure, and uses dynamic spectrum sharing (DDS) to enable carrier coexistence of NR direct communication channels and LTE direct communication channels.
  • DDS dynamic spectrum sharing
  • the terminal device may need to receive the LTE direct data channel, the NR direct data channel and the direct feedback channel at the same time in one time slot.
  • the configuration of the time domain resources of the direct feedback channel may cause problems in the automatic gain control (AGC) of the terminal equipment.
  • AGC automatic gain control
  • the NR direct feedback channel and the NR direct data channel occupy different symbols in time division.
  • LTE direct communication does not support the direct feedback channel, so the LTE direct data channel occupies all available symbols on a time slot.
  • the terminal equipment switches from receiving the LTE direct data channel and the NR direct data channel to receiving the LTE direct data channel and the direct feedback channel, the received power of the terminal equipment changes. changes, thereby affecting the AGC of the terminal device.
  • the direct feedback channel supports a new format.
  • the old format of the direct feedback channel in the related art will be called the first format
  • the new format of the direct feedback channel provided by the embodiment of the present disclosure will be called the second format.
  • the first format may also be referred to as short format
  • the second format may also be referred to as long format.
  • the time domain resources of the direct feedback channel in the first format occupy part of the available symbols in one time slot. For example, the last 1 to 2 symbols in a time slot.
  • Time domain resource occupation of the direct feedback channel of the second format All available symbols in a time slot. Available symbols are the symbols configured for direct-connect communication.
  • the time domain resources of the NR direct data channel may also occupy all available symbols in a time slot. That is, the time domain resources of the direct feedback channel in the second format may occupy the same symbols in one time slot as the time domain resources of the NR direct data channel.
  • the time domain resources of the direct feedback channel in the second format may be configured to be periodic. For example, on the time slots included in the resource pool for NR direct communication, each L time slot is configured with a time slot for transmitting the direct feedback channel of the second format.
  • a resource pool is a logical concept.
  • a resource pool includes multiple physical resources (that is, time domain resources and frequency domain resources), and any physical resource can be used to transmit data.
  • a terminal device transmits data, it needs to use a physical resource from the resource pool for transmission.
  • the terminal is controlled by the network device and selects a physical resource from the resource pool for data transmission according to the instruction information sent by the network device.
  • the terminal autonomously selects a physical resource from the resource pool for data transmission.
  • the direct feedback channel is used for transmitting the direct feedback channel during the time slot used for transmitting the direct feedback channel. Transmission is performed in the second format on the time slot of the direct feedback channel.
  • the format of the direct feedback channel supported by the resource pool for NR direct communication is determined based on configuration or preconfiguration.
  • the resource pool used for NR direct communication may be configured or pre-configured to adopt the second format of the direct feedback channel. Therefore, the direct feedback channel is transmitted in the second format in the time slots used for transmitting the direct feedback channel included in the resource pool for NR direct communication.
  • the frequency domain resources of a second format direct feedback channel occupy multiple sub-carrier spacing (SCS).
  • the granularity of the frequency domain resources of the direct feedback channel in the second format may be at the resource element (resource element, RE) level or at the resource block (resource block, RB) level.
  • RE resource element
  • RB resource block
  • One RE corresponds to one SCS in the frequency domain.
  • One RB corresponds to 12 SCS in the frequency domain.
  • multiple continuous or discrete frequency domain resources of direct feedback channels may be configured. For example, taking the frequency domain resource granularity of the direct feedback channel in the second format as RB level, multiple consecutive RBs can be configured for transmitting the direct feedback channel.
  • the frequency domain resources of the direct feedback channel and the frequency domain resources of the direct data channel of the second format are located in different frequency domain positions. That is to say, the direct feedback channel and the direct data channel of the second format are transmitted in a frequency division manner.
  • the terminal device may determine the time-frequency resources of the direct feedback channel based on preconfiguration or network device configuration. For example, the terminal device may receive the resource configuration information of the direct feedback channel, and determine the time-frequency resources of the direct feedback channel based on the resource configuration information of the direct feedback channel.
  • the resource configuration information of the direct feedback channel may include format information of the PSFCH, identification information of the PSFCH resource pool, symbol number information of the PSFCH, etc., which is not limited.
  • the terminal device needs to receive the LTE direct data channel, the NR direct data channel and the second format direct feedback channel at the same time in one time slot , since the LTE direct data channel, NR direct data channel and the second format direct feedback channel are transmitted in a frequency division manner, the terminal equipment can use the same symbol for direct communication in this time slot. receive power to receive, from To avoid problems with the AGC of the terminal device.
  • the terminal device may need to send multiple direct communication channels (such as NR direct data channel, LTE direct data channel) simultaneously on a time slot , direct feedback channel, etc.).
  • multiple direct communication channels such as NR direct data channel, LTE direct data channel
  • terminal equipment has a maximum transmit power limit, so how to allocate power is a technical issue that needs to be solved urgently.
  • embodiments of the present disclosure provide a direct communication method. As shown in Figure 4, the method includes the following steps.
  • S101 Select M second direct communication channels from the N first direct communication channels to be sent, and determine the transmit power of each of the M second direct communication channels.
  • the sum of the transmit powers of the M second directly connected communication channels is less than or equal to the maximum transmit power of the terminal device, N is a positive integer, and M is a positive integer less than or equal to N.
  • the N first direct communication channels may include one or more of the following.
  • One or more direct feedback channels are provided.
  • LTE direct synchronization channel
  • the direct feedback channel among the N first direct communication channels may be a direct feedback channel using the second format, or may be a direct feedback channel using the first format, which is not limited.
  • the maximum transmit power of the terminal device is the transmit power corresponding to the maximum transmit capability of the terminal device; or, the maximum transmit power of the terminal device is the transmit power corresponding to the terminal device when performing DL power control, so as to avoid the The signal transmission causes interference to the base station signal; or, the maximum transmission power of the terminal equipment is the transmission power corresponding to the terminal equipment when performing SL power control, so as to reduce the impact on the communication effect caused by the distance between the two terminal equipments performing direct communication. Impact; or, the maximum transmit power of the terminal device is the transmit power corresponding to the terminal device when congestion power control is performed, so as to reduce network congestion in direct communication.
  • the maximum transmit power of the terminal device can be determined through preconfiguration or network configuration, which is not limited in the embodiments of the present disclosure.
  • the terminal device may have its own maximum transmit power when transmitting the LTE direct communication channel and the NR direct communication channel.
  • the maximum transmit power of the terminal device is the maximum transmit power corresponding to the LTE direct communication channel or the NR direct communication channel.
  • the maximum transmit power of the terminal device is the maximum value of the maximum transmit power corresponding to the LTE direct communication channel and the maximum transmit power corresponding to the NR direct communication channel; in other examples, the maximum transmit power of the terminal device is The minimum value of the maximum transmit power corresponding to the LTE direct communication channel and the maximum transmit power corresponding to the NR direct communication channel.
  • the above-mentioned N first direct communication channels overlap in the time domain.
  • the overlap in the time domain of two directly connected communication channels may be a partial overlap or a complete overlap.
  • two directly connected communication channels partially overlap in the time domain, which may mean that at least one symbol among the symbols occupied by the two directly connected communication channels overlaps.
  • the two directly connected communication channels all overlap in the time domain, which may mean that the symbols occupied by the two directly connected communication channels all overlap.
  • the selection method of the M second direct communication channels will be described in detail below based on different situations of the N first direct communication channels.
  • the N first direct communication channels include an NR direct data channel (or an NR direct synchronization data channel) and N 1 direct feedback channels, and N 1 is equal to N-1.
  • the M second direct communication channels include an NR direct data channel (or an NR direct synchronization channel) and/or N 2 direct feedback channels, and N 2 is less than or equal to min(N 1 , N max ), N max is the maximum number of direct feedback channels that the terminal device supports to send simultaneously. It can be understood that the N 2 direct feedback channels are part or all of the N 1 direct feedback channels mentioned above.
  • N first direct communication channels including one NR direct data channel and N 1 direct feedback channels as an example.
  • the volume "NR direct data channel” in the following text can be replaced with "NR direct synchronization channel”.
  • the transmit power of each second direct communication channel among the M second direct communication channels is the corresponding required power.
  • the M second directly connected communication channels are determined through any one of the following methods 1-1 to 1-6.
  • the M second directly connected communication channels include one of the NR direct connected data channels and the N 1 direct connected feedback channels. That is, the M second directly connected communication channels are N first directly connected communication channels, and M is equal to N.
  • Method 1-2 When N 1 is less than or equal to N max , and the sum of the required power of one NR direct-connected data channel and the required power of the N 1 direct-connected feedback channels is greater than the maximum transmit power of the terminal device
  • the M second direct communication channels include one of the NR direct data channels and the first N 2 direct feedback channels in the first arrangement order.
  • the first arrangement order is an arrangement order obtained by arranging the N 1 direct feedback channels in order from high to low priority.
  • the terminal device may first calculate the remaining power, which is equal to the difference between the maximum transmit power of the terminal device and the required power of the NR direct data channel. Afterwards, the terminal device may sequentially accumulate the required power of the direct-connected feedback channels according to the first arrangement order based on the required power of each direct-connected feedback channel among the N 1 direct-connected feedback channels. The sum of the required powers of the first N 2 +1 direct feedback channels in the first arrangement is greater than the remaining power, and the sum of the required powers of the first N 2 direct feedback channels in the first arrangement is less than or equal to the remaining power. In the case of power, the terminal device can determine the detailed value of N 2 , or in other words, the terminal device can determine the N 2 direct feedback channels that should be included in the M second directly connected communication channels.
  • the N first direct communication channels include 1 NR PSCCH/PSSCH and 5 PSFCHs.
  • the required power of NR PSCCH/PSSCH is denoted as P 0 .
  • the five PSFCHs are marked as PSFCH1 to PSFCH5, and the required powers of PSFCH1 to PSFCH5 are marked as P 1 -P 5 respectively.
  • PSFCH1 to PSFCH5 are arranged in order of priority from high to low.
  • the first sorting order is: PSFCH1, PSFCH4, PSFCH3, PSFCH2 and PSFCH5.
  • the maximum transmit power of the terminal equipment is P max .
  • the M second direct communication channels include NR PSCCH/PSSCH, PSFCH1 and PSFCH4.
  • the M second direct-connected communication channels include the first M first direct-connected communication channels in the second arrangement order.
  • the second arrangement order is an arrangement order obtained by arranging the N first direct communication channels in order from high to low priority.
  • the terminal device may sequentially accumulate the required power of the first direct communication channels according to the second arrangement order based on the required power of each first direct communication channel.
  • the sum of the required powers of the first M first direct communication channels in the second arrangement is less than or equal to the maximum transmit power of the terminal equipment, and the sum of the first M+1 first direct communication channels in the second arrangement is The sum of the required powers is greater than the maximum transmit power of the terminal device, and the terminal device can determine the detailed value of M.
  • the N first direct communication channels include 1 NR PSCCH/PSSCH and 5 PSFCHs.
  • the required power of NR PSCCH/PSSCH is denoted as P 0 .
  • the five PSFCHs are marked as PSFCH1 to PSFCH5, and the required powers of PSFCH1 to PSFCH5 are marked as P 1 -P 5 respectively.
  • the second arrangement order obtained by arranging the N first direct communication channels from high to low priority is: PSFCH1, PSFCH4, PSFCH3, PSFCH2, PSFCH5, NR PSCCH/PSSCH.
  • the maximum transmit power of the terminal equipment is P max .
  • the M second directly connected communication channels include PSFCH1, PSFCH4 and PSFCH3.
  • the M second directly connected communication channels include one of the NR direct connected data channels and N max direct connected feedback channels, that is, N 2 is equal to N max .
  • the N max direct feedback channels are the first N max direct feedback channels in the first sort order.
  • Method 1-5 When N 1 is greater than N max , and the sum of the required power of one NR direct-connected data channel and the required power of N max direct-connected feedback channels is greater than the maximum transmit power of the terminal device,
  • the M second direct communication channels include one of the NR direct data and the first N 2 direct feedback channels in a first arrangement order, and the first arrangement order is the N 1 direct feedback channels Arranged in order of priority from high to low.
  • Method 1-6 When N 1 is greater than N max , and the sum of the required power of one NR direct-connected data channel and the required power of N max direct-connected feedback channels is greater than the maximum transmit power of the terminal device,
  • the M second direct communication channels include the first M direct communication channels in a second arrangement order, and the second arrangement order is the N first direct communication channels from high to low according to priority.
  • the sort order obtained by sorting in order.
  • each of the M second direct communication channels uses the same power spectral density for transmission. That is to say, the transmit power of each second directly connected communication channel on a frequency domain unit (for example, PRB) is the same.
  • a frequency domain unit for example, PRB
  • the transmit power of each direct feedback channel in the N 2 direct feedback channels Less than or equal to X 1 times the maximum transmit power of the terminal equipment. The sum of the bandwidth of the connected data channels.
  • the power is dB (decibel) value, that is, the power unit is dBm.
  • the transmit power of the above-mentioned direct feedback channel satisfies the following relationship.
  • P PSFCH (i) is the transmit power of the direct feedback channel
  • P cmax is the maximum transmit power of the terminal device.
  • the transmission power of the NR direct data channel is less than or equal to the maximum transmission of the terminal device X 2 times the power, X 2 is equal to the ratio of the bandwidth of the NR direct data channel to the first total bandwidth.
  • the first total bandwidth is the sum of the bandwidth of N 2 direct feedback channels and the bandwidth of one NR direct data channel.
  • the transmit power of the above-mentioned NR direct data channel satisfies the following relationship.
  • P PSSCH (i) is the transmit power of the NR direct data channel
  • P cmax is the maximum transmit power of the terminal device.
  • each of the M second direct communication channels uses the same power spectral density for transmission, which is suitable for terminal equipment that does not enable DL power control, SL power control and/or congestion. under control.
  • the N first direct communication channels include an NR direct synchronization channel and an NR direct data channel.
  • the M second direct-connected communication channels include one NR Direct synchronization channel and an NR direct data channel. That is, the M second directly connected communication channels are N first directly connected communication channels, and N is equal to M. Based on this, the transmit power of the NR direct data channel is its corresponding required power. The transmit power of the NR direct synchronization channel is its corresponding required power.
  • M is equal to 1, that is, the M second direct communication channels include one of the NR direct synchronization channel or the NR direct data channel.
  • the M second direct-connected communication channels include one NR direct-connected synchronization channel; or, if the NR direct-connected synchronization channel The priority is lower than the priority of the NR direct-connected data channel, then the M second direct-connected communication channels include one direct-connected data channel; or, if the priority of the NR direct-connected synchronization channel is equal to the priority of the NR direct-connected data channel , then it is determined according to the configuration or pre-configuration of the network device whether the M second direct communication channels include NR direct data channels or NR direct synchronization channels.
  • the transmission power of the NR direct data channel is its corresponding required power.
  • the transmit power of the NR direct synchronization channel is its corresponding required power.
  • the M second direct communication channels may include one NR direct synchronization channel and one NR direct data channel. Based on this, the NR direct synchronization channel and the NR direct data channel sample the same power spectral density for transmission. That is, the transmit power of the NR direct synchronization channel and the NR direct data channel in one frequency domain unit is the same.
  • the transmit power of the NR direct synchronization channel is less than or equal to X 3 of the maximum transmit power of the terminal device. times. X3 is the ratio between the bandwidth of the NR direct synchronization channel and the second total bandwidth. The second total bandwidth is the sum of the bandwidth of the NR direct synchronization channel and the bandwidth of the NR direct data channel.
  • the transmit power of the NR direct synchronization channel satisfies the following relationship.
  • PS -SSB (i) is the transmit power of the NR direct synchronization channel
  • P cmax is the maximum transmit power of the terminal device.
  • the transmit power of the NR direct data channel is less than or equal to X 4 of the maximum transmit power of the terminal device.
  • X 4 is the ratio between the bandwidth of the NR direct data channel and the second total bandwidth.
  • the second total bandwidth is the sum of the bandwidth of the NR direct synchronization channel and the bandwidth of the NR direct data channel.
  • the transmit power of the NR direct synchronization channel satisfies the following relationship.
  • P PSSCH (i) is the transmit power of the NR direct data channel
  • P cmax is the maximum transmit power of the terminal device.
  • the NR direct synchronization channel and the NR direct data channel sample the same power spectral density for transmission, which is suitable for the sum of the required power of the NR direct synchronization channel and the required power of the NR direct data channel being greater than the terminal device.
  • the maximum transmit power is reached, or when the terminal device does not enable DL power control, SL power control and/or congestion control.
  • the N first direct communication channels include an NR direct synchronization channel, an NR direct data channel and N 1 direct feedback channels, where N 1 is equal to N-2.
  • the M second directly connected communication channels include one NR direct connected synchronization channel, one NR direct connected synchronization channel, and/or N 2 direct connected feedback channels, N 2 is less than or equal to min(N 1 , N max ), N max is the maximum number of direct feedback channels that the terminal device supports to send simultaneously. It can be understood that the N 2 direct feedback channels are part or all of the N 1 direct feedback channels mentioned above.
  • the transmit power of each second direct communication channel among the M second direct communication channels is its corresponding required power. Based on this, the M second directly connected communication channels are determined through any one of the following methods 1-1 to 1-6.
  • the M second direct communication channels include one NR direct data channel, one NR direct synchronization channel and the N 1 direct feedback channels . That is, the M second directly connected communication channels are N first directly connected communication channels, and M is equal to N.
  • Method 1-2 When N 1 is less than or equal to N max , and the sum of the above three power requirements is greater than the maximum transmit power of the device, the M second directly connected communication channels include first sending one in priority order.
  • the NR direct-connected data channel and one NR direct-connected synchronization channel, if there is power remaining, will be the first N 2 direct-connected feedback channels in the first arrangement order, and the first arrangement order will be the N 1 direct-connected feedback channels.
  • Feedback channels are arranged in order of priority from high to low.
  • the terminal device may first calculate the remaining power, which is equal to the difference between the maximum transmit power of the terminal device and the required power of the NR direct data channel and the required power of the NR direct synchronization channel. Afterwards, the terminal device may sequentially accumulate the required power of the direct-connected feedback channels according to the first arrangement order based on the required power of each direct-connected feedback channel among the N 1 direct-connected feedback channels. The sum of the required powers of the first N 2 +1 direct feedback channels in the first arrangement is greater than the remaining power, and the sum of the required powers of the first N 2 direct feedback channels in the first arrangement is less than or equal to the remaining power. In the case of power, the terminal device can determine the detailed value of N 2 , or in other words, the terminal device can determine the N 2 direct feedback channels that should be included in the M second directly connected communication channels.
  • the M second directly connected communication channels include the second direct communication channels in the second arrangement order.
  • the second arrangement order is an arrangement order in which the N first direct communication channels are arranged in order from high to low priority.
  • the terminal device may sequentially accumulate the required power of the first direct communication channels according to the second arrangement order based on the required power of each first direct communication channel.
  • the sum of the required powers of the first M first direct communication channels in the second arrangement is less than or equal to the maximum transmit power of the terminal equipment, and the sum of the first M+1 first direct communication channels in the second arrangement is The sum of the required powers is greater than the maximum transmit power of the terminal device, and the terminal device can determine the detailed value of M.
  • the M second directly connected communication channels include one of the NR Directly connected data channels, one NR direct-connected synchronization channel and N max direct-connected feedback channels, that is, N 2 is equal to N max .
  • the N max direct feedback channels are the first N max direct feedback channels in the first sort order.
  • Method 1-5 When N 1 is greater than N max , and the sum of the above three required powers is greater than the maximum transmit power of the terminal equipment, the M second directly connected communication channels include first according to one of the NR Direct data and one or both of the NR direct synchronization channels are sent in priority order. If there is remaining power, continue to send the first N 2 direct feedback channels in the first arrangement order.
  • the first arrangement order is an arrangement order obtained by arranging the N 1 direct feedback channels in order from high to low priority.
  • the M second directly connected communication channels include the second direct communication channels in the second arrangement order.
  • the second arrangement order is that the N first direct communication channels are arranged in order from high to low priority.
  • the sort order obtained by sorting.
  • each of the M second direct communication channels uses the same power spectral density for transmission. That is to say, the transmit power of each second directly connected communication channel on a frequency domain unit (for example, PRB) is the same.
  • a frequency domain unit for example, PRB
  • each of the N 2 direct feedback channels includes one NR direct data channel, one NR direct synchronization channel and N 2 direct feedback channels
  • the transmit power of the direct feedback channel is less than or equal to X 1 times the maximum transmit power of the terminal device, and X 1 is equal to the ratio of the bandwidth of a direct feedback channel to the first total bandwidth.
  • the first total bandwidth is the sum of the bandwidth of N 2 directly connected feedback channels, the bandwidth of one NR direct connected data channel and the bandwidth of one NR directly connected synchronization channel.
  • the transmit power of the NR direct data channel is less than or equal to X 2 times the maximum transmit power of the terminal device, and X 2 is equal to the ratio of the bandwidth of the NR direct data channel to the first total bandwidth.
  • the transmit power of the NR direct synchronization channel is less than or equal to X 3 times the maximum transmit power of the terminal equipment, and X 3 is equal to the ratio of the bandwidth of the NR direct synchronization channel to the first total bandwidth.
  • each of the M second direct communication channels uses the same power spectral density for transmission, which is suitable for terminal equipment that does not enable DL power control, SL power control and/or congestion. under control.
  • downlink-based PSFCH power control is enabled, that is, the downlink power control parameter (dl-P0-PSFCH) is preconfigured in the terminal device or configured by the network device, then the required power of the PSFCH satisfies the following relationship.
  • P PSFCH, one P O, PSFCH +10log 10 (2 ⁇ ) + ⁇ PSFCH ⁇ PL.
  • P PSFCH one is the required power of PSFCH on a PRB
  • P O PSFCH is the expected received PSFCH power or power density, which is indicated by the configured or preconfigured dl-P0-PSFCH parameter
  • ⁇ PSFCH is given by
  • the configured or preconfigured power control parameter dl-Alpha-PSFCH indicates or is not configured, the value is equal to 1
  • ⁇ is the currently used subcarrier spacing (SCS, subcarrier spacing)
  • PL is based on a reference signal (RS, reference signal) Measured path loss.
  • RS reference signal
  • the required power PPSFCH, one of one PSFCH is preconfigured or configured through a network device.
  • the absolute power of the PSFCH can be pre-configured or configured through the network device, and the relative power of the PSFCH can also be configured, for example, the relative power is configured to be X times the maximum power.
  • X is a rational number less than 1.
  • P PSFCH one is the required power of PSFCH on a PRB
  • P cmax is the maximum transmit power of the UE
  • X is a constant.
  • the required power of the PSFCH can be expressed as.
  • PSCCH/PSSCH power control based on downlink and/or direct communication is enabled, that is, the downlink power control parameter dl-P0-PSSCH-PSCCH and/or the direct communication power control parameter sl-P0-PSSCH -PSCCH is pre-configured or configured through network equipment, then on a data transmission occasion i, the PSCCH/PSSCH required power satisfies the following relationship.
  • P PSSCH (i) min ( PCMAX , P MAX, CBR , min (P PSSCH, D (i), P PSSCH, SL (i))) [dBm].
  • P PSSCH (i) is the required power of PSCCH/PSSCH
  • P CMAX is the maximum transmit power of UE
  • P MAX and CBR are the maximum transmit power under the power requirements based on congestion control, that is, based on the current channel occupied channel busy The maximum power determined by channel busy ratio (CBR) and PSSCH priority
  • P PSSCH, D (i) is the required power determined based on downlink power control
  • P PSSCH, SL (i) is the required power determined based on SL power control .
  • the PSCCH/PSSCH required power satisfies the following relationship.
  • the required power PPSSCH, one of one PRB of a PSSCH is preconfigured or configured through the network device; for example, the absolute power of the PSSCH can be preconfigured or configured through the network device, and the relative power of the PSSCH can also be configured. , for example, configure the relative value power to Y times the maximum power.
  • Y is a rational number less than 1.
  • P PSSCH one is the required power of PSSCH on one PRB
  • P cmax is the maximum transmit power of the UE
  • Y is a constant.
  • a PSSCH required power satisfies the following relationship.
  • P PSSCH (i) is the required power of PSCCH/PSSCH;
  • P PSSCH one is the required power of one PRB of PSSCH; It is the number of PRBs occupied by PSSCH.
  • downlink-based synchronization signal power control is enabled, that is, the downlink power control parameters dl-P0-PSBCH and are preconfigured or configured through the network device. Then the SL synchronization required power satisfies the following relationship.
  • P O S-SSB is indicated by dl-P0-PSBCH
  • ⁇ S-SSB is indicated by dl-Alpha-PSBCH or equal to 1
  • ⁇ is determined by the currently used subcarrier spacing (SCS, subcarrier spacing)
  • PL is the path loss measured based on a reference signal
  • the PSBCH required power satisfies the following relationship.
  • different types of direct communication channels may have different power spectral densities. That is to say, the transmit power of different types of direct communication channels on a PRB is different.
  • P PSSCH,one , PS -SSB,one and P PSSCH,one may have different values.
  • different types of direct communication channels may have the same power spectral density. That is to say, the transmit power of different types of direct communication channels on one PRB is the same, and they can all be equal to P SL,one .
  • P SL,one is equal to P PSSCH,one , PSSB,one or P PSSCH,one determined according to the above embodiments.
  • P SL,one may be obtained by performing preset processing on one or more of P PSSCH,one , PS-SSB,one and P PSSCH,one .
  • the above preset processing can be taking the minimum number, taking the maximum number, averaging, etc., and is not limited to this.
  • P SL,one can be the maximum or minimum value of P PSSCH,one and P PSSCH,one .
  • P SL,one may be the average of P PSSCH,one and P PSSCH,one .
  • the sending capability of the terminal device since the sending capability of the terminal device is limited, the sending capability of the terminal device needs to be considered when selecting M second direct communication channels from the N first direct communication channels. In this way, the selected M second directly connected communication channels can meet the restriction requirements of the transmission capability of the terminal device. In other words, the sending capability of the terminal device supports sending M second directly connected communication channels.
  • the sending capability of the terminal device can be determined through preconfiguration or network configuration.
  • the transmitting capability of the terminal device may be related to the maximum transmit power of the terminal device, the number of transmit antennas, etc., which is not limited.
  • the M second direct communication channels are the first M first direct communication channels in the third arrangement order.
  • the third arrangement order is obtained by arranging the N first direct communication channels.
  • the third arrangement order is obtained by arranging the N first direct communication channels based on the priority of each first direct communication channel.
  • the first direct communication channel with a high priority is located before the first direct communication channel with a low priority in the third arrangement order.
  • the third arrangement order is obtained by arranging the N first direct communication channels based on the priority and/or transmission level of each first direct communication channel.
  • the first direct communication channel with a high transmission level is located before the first direct communication channel with a low transmission level in the third arrangement order.
  • the first direct communication channel with a higher priority is located before the first direct communication channel with a lower priority in the third arrangement order.
  • the transmission level may be related to the type of direct communication channel, communication format, carried content, etc. Based on this, for example, the sending level may satisfy one or more of the following rules.
  • Rule 1-1 The transmission level of the direct synchronization channel is higher than the transmission level of the direct data channel
  • Rule 1-2 The transmission level of the direct data channel is higher than the transmission level of the direct feedback channel;
  • Rule 1-3 The transmission level of the direct feedback channel used to carry hybrid automatic repeat response information is higher than the transmission level of the direct feedback channel used to carry conflict indication;
  • Rule 1-4 The reception level of the NR direct communication channel is higher or lower than the reception level of the LTE direct communication channel.
  • the rules applicable to the sending level and the priority order among the rules can be determined through network device configuration or pre-configuration.
  • the various types of direct communication channels in order from high to low transmission levels are: NR direct synchronization channel, NR direct data channel, direct feedback channel, LTE direct synchronization channel, LTE direct data channel.
  • the various types of direct communication channels in order from high to low transmission level are: NR direct connection synchronization channel, LTE direct connection synchronization channel, NR direct connection data channel, LTE direct connection data channel, Direct feedback channel.
  • the various types of direct communication channels in order from high to low transmission level are: LTE direct synchronization channel, LTE direct data channel, NR direct synchronization channel, NR direct data channel, Direct feedback channel.
  • the various types of direct communication channels in order from high to low transmission levels are: LTE direct synchronization channel, NR direct synchronization channel, LTE direct data channel, NR direct data channel, Direct feedback channel.
  • the order between the transmission level of the NR direct communication channel and the transmission level of the LTE direct communication channel may be determined based on network configuration or preconfiguration.
  • the order between the transmission level of the NR direct communication channel and the transmission level of the LTE direct communication channel may be determined based on the actual situation of the N first direct communication channels to be transmitted.
  • the N first direct communication channels to be sent include at least one NR direct communication channel to be sent and at least one LTE direct communication channel to be sent
  • the transmission level of the NR direct communication channel to be sent is higher than the transmission level of the LTE direct communication channel to be sent.
  • the transmission level of the NR direct communication channel to be sent is lower than the transmission level of the LTE direct communication channel to be sent.
  • the first priority is the highest priority among the priorities of all NR direct communication channels to be sent
  • the second priority is the highest priority among the priorities of all LTE direct communication channels to be sent.
  • the terminal device may be restricted to transmitting only one type of direct communication channel at the same time. That is to say, the M second directly connected communication channels belong to the same type of direct connected communication channels. Based on this, M second direct communication channels can be selected from the N first direct communication channels according to a preset type sorting.
  • the preset type ordering is: NR direct connection data channel, LTE direct connection data channel, NR direct connection synchronization channel, LTE direct connection synchronization channel and direct connection feedback channel.
  • S102 Transmit M second directly connected communication channels based on the transmit power of each of the M second directly connected communication channels.
  • the second direct communication channel is transmitted with the transmission power of the second direct communication channel.
  • the transmission power of the direct communication channel is power controlled to ensure that the power sum of the actually transmitted direct communication channel (for example, the above-mentioned M second direct communication channels The sum of the transmission powers of the communication channels) is less than the maximum transmission power of the terminal equipment, thereby improving the communication quality and reducing energy loss.
  • the terminal device may need to receive multiple direct communication channels (such as NR direct data channel, LTE direct data channel) at the same time in one time slot. , direct feedback channel, etc.).
  • multiple direct communication channels such as NR direct data channel, LTE direct data channel
  • direct feedback channel etc.
  • the receiving capability of the terminal device is limited. Therefore, when the multiple direct communication channels to be received exceed the receiving capability of the terminal device, how the terminal device receives the direct communication channel is an urgent technical problem to be solved.
  • embodiments of the present disclosure also provide a direct communication method. As shown in Figure 5, the method includes the following steps.
  • the receiving capability of the terminal device supports receiving K fourth direct communication channels.
  • P is a positive integer
  • K is a positive integer less than or equal to P.
  • the P third directly connected communication channels include one or more of the following.
  • One or more LTE direct data channels are One or more LTE direct data channels
  • One or more direct feedback channels are provided.
  • the direct feedback channel among the P third direct communication channels may be a direct feedback channel using the second format, or may be a direct feedback channel using the first format, which is not limited.
  • the above-mentioned P third directly connected communication channels overlap in the time domain.
  • the overlap in the time domain of two directly connected communication channels may be a partial overlap or a complete overlap.
  • two directly connected communication channels partially overlap in the time domain, which may mean that at least one symbol among the symbols occupied by the two directly connected communication channels overlaps.
  • the two directly connected communication channels all overlap in the time domain, which may mean that the symbols occupied by the two directly connected communication channels all overlap.
  • the P third directly connected communication channels are all used as fourth direct connected communication channels.
  • some direct connected communication channels are selected from the P third directly connected communication channels as the third directly connected communication channel without exceeding the receiving capability of the terminal device. Four direct communication channels.
  • the receiving capability of the terminal device is related to the terminal device's baseband processing capability, antenna configuration, etc.
  • the receiving capability of the terminal device can be determined through pre-configuration or network device configuration, and is not limited to this.
  • the receiving capability of the terminal may be reflected by the maximum number of direct communication channels received simultaneously.
  • the K fourth directly connected communication channels are the first K third directly connected communication channels in the fourth arrangement order.
  • the fourth arrangement sequence is obtained by arranging P third directly connected communication channels.
  • the fourth arrangement order is obtained by arranging the P third directly connected communication channels based on the priority of each third directly connected communication channel.
  • the third directly connected communication channel with a high priority is located before the third directly connected communication channel with a low priority in the fourth arrangement order.
  • the fourth arrangement order is obtained by arranging the P third directly connected communication channels based on the reception level and priority of each third directly connected communication channel.
  • the third direct communication channel with a high reception level is located before the third direct communication channel with a low reception level in the fourth arrangement order.
  • the third direct communication channel with a higher priority is located before the third direct communication channel with a lower priority in the fourth arrangement order.
  • the reception level may be related to the type of direct communication channel, communication format, carried content, etc. Based on this, for example, the reception level may satisfy one or more of the following rules.
  • Rule 2-1 The reception level of the direct synchronization channel is higher than the reception level of the direct data channel;
  • Rule 2-2 The reception level of the direct data channel is higher than the reception level of the direct feedback channel;
  • Rule 2-4 The reception level of the NR direct communication channel is higher or lower than the reception level of the LTE direct communication channel.
  • the rules applicable to the reception level and the priority between the rules can be determined through network device configuration or pre-configuration.
  • the various types of direct communication channels in order of reception level from high to low are: NR direct synchronization channel, NR direct data channel, direct feedback channel, LTE direct synchronization channel, LTE direct data channel.
  • the various types of direct communication channels in order of reception level from high to low are: NR direct connection synchronization channel, LTE direct connection synchronization channel, NR direct connection data channel, LTE direct connection data channel, Direct feedback channel.
  • the various types of direct communication channels in order from high to low reception levels are: LTE direct synchronization channel, LTE direct data channel, NR direct synchronization channel, NR direct data channel, Direct feedback channel.
  • the various types of direct communication channels in order of reception level from high to low are: LTE direct synchronization channel, NR direct synchronization channel, LTE direct data channel, NR direct data channel, Direct feedback channel.
  • the order between the reception level of the NR direct communication channel and the reception level of the LTE direct communication channel may be determined based on network configuration or preconfiguration.
  • the order between the reception level of the NR direct communication channel and the reception level of the LTE direct communication channel may be determined based on the actual situation of the P third direct communication channels to be received. For example, in the case where the P third direct communication channels to be received include at least one NR direct communication channel to be received and at least one LTE direct communication channel to be received, if the third priority is higher than or equal to the third Four priorities, the reception level of the NR direct communication channel to be received is higher than the reception level of the LTE direct communication channel to be received.
  • the third priority is lower than the fourth priority
  • the reception level of the NR direct communication channel to be received is lower than the reception level of the LTE direct communication channel to be received;
  • the third priority is all NR direct communication channels to be received.
  • the fourth priority is the highest priority among the priorities of all LTE direct communication channels to be received.
  • the technical solution provided by the embodiment of the present disclosure is that when the P direct connection communication channels to be received overlap in the time domain, by considering the receiving capability of the terminal device, K fourth direct connections that can be supported by the receiving capability of the terminal device are selected.
  • the communication channel is received to ensure that the terminal device can communicate normally with direct connection.
  • the terminal device may need to perform the operations of receiving the NR direct communication channel, sending the NR direct communication channel, and receiving the LTE direct communication at the same time.
  • some terminal devices have half-duplex limitations, that is, these terminal devices cannot perform receiving operations and sending operations at the same time. Therefore, for terminal equipment with half-duplex limitations, it is necessary to consider how to solve the problem of conflict in the time domain between the direct communication channel to be received and the direct communication channel to be sent.
  • embodiments of the present disclosure also provide a direct communication method. As shown in Figure 6, the method includes the following steps.
  • the receive priority is used to characterize the priority of performing receive operations.
  • Send priority is used to characterize the priority of performing send operations.
  • the reception priority is the highest priority among the priorities of the N first direct communication channels.
  • the transmission priority is the highest priority among the priorities of the P third directly connected communication channels.
  • the transmission priority is the highest priority among the priorities of some of the P third directly connected communication channels (for example, the direct connected communication channel of the target type).
  • the target type may include one or more of a direct feedback channel, an LTE direct data channel, an NR direct synchronization channel, or an LTE direct synchronization channel. It should be noted that the reason why the target type does not include the NR direct data channel is that the sender generally does not send the NR direct data channel periodically, so it is difficult for the receiver to predict the reception timing of the NR direct data channel, so it is inconvenient.
  • the priority of the NR direct data channel to be received is considered in the process of determining the reception priority.
  • the N first direct communication channels to be sent and the P third direct communication channels to be received can be divided from the communication standard into: at least one LTE direct communication channel to be transmitted and the P third direct communication channels to be received.
  • Transmission of at least one NR direct communication channel is the highest priority among the priorities of each NR direct communication channel to be received among the at least one NR direct communication channel to be transmitted.
  • the transmission priority is the highest priority among the priorities of each NR direct communication channel to be transmitted among the one less NR direct communication channel to be transmitted.
  • the receiving priority is the highest priority among the priorities of each LTE direct communication channel to be received among the at least one LTE direct communication channel to be transmitted
  • the sending The priority is the highest priority among the priorities of each LTE direct communication channel to be transmitted among the one less LTE direct communication channel to be transmitted.
  • the NR priority may be the highest priority among the priorities of at least one NR direct communication channel to be transmitted.
  • the LTE priority may be the highest priority among the priorities of at least one LTE direct communication channel to be transmitted.
  • the above description of the determination method of the receiving priority and the sending priority is only exemplary.
  • the receiving priority and the sending priority can also be determined in other ways, which are not limited by the embodiments of the present disclosure.
  • the priority of the direct communication channel may be ProSe per packet priority (PPPP).
  • PPPP ProSe per packet priority
  • the priority of a directly connected communication channel can be characterized by a priority value. There is a negative correlation between priority value and priority, that is, the smaller the priority value, the higher the priority.
  • priorities of different types of direct communication channels may be determined in the following manner.
  • the priority of the NR direct data channel is indicated by the information in its corresponding sidelink control information (SCI);
  • the priority of the LTE direct data channel is indicated by the information in its corresponding SCI;
  • the priority of the NR synchronization signal is determined through pre-configuration or network device configuration
  • the priority of LTE synchronization signals is determined through pre-configuration or network device configuration
  • the priority of the direct feedback channel is determined by the priority of its corresponding NR direct data channel.
  • the group priority of the set of direct feedback channels may be equal to the highest priority of all the priorities of all direct feedback channels in the group.
  • the receiving priority in the case where the receiving priority is higher than the sending priority, it is determined to perform the receiving operation. Or, in the case where the receiving priority is lower than the sending priority, it is determined to perform the sending operation. Alternatively, when the receiving priority is equal to the sending priority, it is determined to perform a receiving operation or a sending operation.
  • the time of sending the N first direct communication channels can be advanced or delayed to ensure that the terminal device can perform direct communication normally.
  • performing the sending operation may be implemented with reference to S101 to S102 in the foregoing embodiments.
  • performing the receiving operation may be implemented with reference to S201 to S202 in the foregoing embodiments.
  • the technical solution provided by the embodiments of the present disclosure can reasonably deal with the problem of conflict in the time domain between the direct communication channel to be sent and the direct communication channel to be received when the terminal device has half-duplex restrictions, so as to ensure that Prioritize transmission on important direct communication channels.
  • the terminal device performs a sending operation.
  • the terminal device performs a receiving operation.
  • embodiments of the present disclosure provide corresponding hardware structures and/or software modules that perform each function.
  • Persons skilled in the art should easily realize that, in conjunction with the modules and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered to be beyond the scope of this disclosure.
  • an embodiment of the present disclosure provides a direct connection communication device for performing the direct connection communication method shown in FIGS. 4 to 6 .
  • the direct-connect communication device 300 includes: a processing module 301 and a transmitting module 302.
  • Processing module 301 configured to select M second direct communication channels from the N first direct communication channels to be received, and determine the transmit power of each of the M second direct communication channels. , the sum of the transmit powers of the M second directly connected communication channels is less than or equal to the maximum transmit power of the terminal device, N is a positive integer, and M is a positive integer less than or equal to N.
  • the transmitting module 302 is configured to transmit the M second directly connected communication channels based on the transmitting power of each of the M second directly connected communication channels.
  • the M second direct communication channels include NR direct data channels and/or N 2 direct feedback channels.
  • N 1 is equal to N-1
  • N 2 is less than or equal to min(N 1 , N max )
  • N max is the maximum number of direct feedback channels that the terminal device supports to be sent simultaneously.
  • the transmit power of each of the M second directly connected communication channels is equal to its corresponding corresponding power demand.
  • the M second direct communication channels include NR direct data channels and N 1 direct feedback channels.
  • the second direct communication channel includes NR direct data and the first N 2 direct feedback channels in the first arrangement order.
  • the first arrangement order is N 1 direct feedback channels, which are arranged in the order of priority from high to low. And get the sort order.
  • M The second direct communication channel includes the first M first direct communication channels in the second arrangement order, and the second arrangement order is obtained by arranging the N first direct communication channels in order from high to low priority. Order.
  • the second direct communication channel includes an NR direct data channel and N max direct feedback channels.
  • the M second The direct communication channel includes the NR direct data channel and the first N 2 direct feedback channels in the first arrangement order.
  • the first arrangement order is the N 1 direct feedback channels, which are arranged in order from high to low priority. The resulting sort order.
  • the Mth The two direct communication channels include the first M first direct communication channels in the second arrangement order, and the second arrangement order is an arrangement obtained by arranging the N first direct communication channels in order from high to low priority. order.
  • each of the M second direct communication channels uses the same power spectral density for transmission.
  • the transmit power of each of the N 2 direct feedback channels is less than Or equal to X 1 times the maximum transmit power of the terminal equipment. The sum of the channel bandwidths.
  • the transmit power of the directly connected data channel is less than or equal to X2 times the maximum transmit power of the terminal device, and X2 is equal to the ratio of the bandwidth of the directly connected data channel to the first total bandwidth.
  • the transmitting capability of the terminal device supports transmitting M second directly connected communication channels.
  • the M second direct communication channels are the first M first direct communication channels in the third arrangement sequence, and the third arrangement sequence consists of the N first direct communication channels.
  • the channels are arranged.
  • the third ranking order is based on the priority of each first direct communication channel, and the N first direct communication channels are The communication channels are arranged.
  • the first direct communication channel with a high priority is located before the first direct communication channel with a low priority in the third arrangement order.
  • the third arrangement order is obtained by arranging the N first direct communication channels based on the priority and transmission level of each first direct communication channel.
  • the first direct communication channel with a high transmission level is located before the first direct communication channel with a low transmission level in the third arrangement order.
  • the first direct communication channel with a higher priority is located before the first direct communication channel with a lower priority in the third arrangement order.
  • the transmission level satisfies one or more of the following rules: the transmission level of the direct synchronization channel is higher than the transmission level of the direct data channel; the transmission level of the direct data channel is higher than the transmission level of the direct feedback channel Transmission level; the transmission level of the NR direct communication channel is higher or lower than the transmission level of the LTE direct communication channel; or the transmission level of the direct feedback channel used to carry hybrid automatic repeat response information is higher than the transmission level used to carry collisions Indicates the transmit level of the direct feedback channel.
  • the above-mentioned processing module 301 is also used to obtain the receiving priority and the sending priority when multiple direct communication channels overlap in the time domain.
  • the multiple direct communication channels include N first direct communication channels to be sent and P third direct communication channels to be received, where P is a positive integer. Based on the comparison result between the receiving priority and the sending priority, it is determined to perform the receiving operation or to perform the sending operation.
  • the above-mentioned processing module 301 is used to determine to perform the sending operation if the sending priority is higher than the receiving priority; or, if the sending priority is lower than the receiving priority, determine to perform the receiving operation; or, if the sending priority is The level is equal to the receiving priority, which determines whether to perform a sending operation or a receiving operation.
  • the transmission priority is the highest priority among the priorities of the N first direct communication channels.
  • the reception priority is the highest priority among the priorities of the P third direct communication channels; or, the reception priority is the third direct connection of all target types among the P third direct communication channels.
  • the target type includes one or more of the LTE direct data channel, LTE direct synchronization channel, NR direct synchronization channel or direct feedback channel.
  • the above-mentioned processing module 301 is also configured to select K fourth direct communication channels from the P third direct communication channels, where K is a positive integer less than or equal to P. ;Receive K fourth direct communication channels.
  • the K fourth directly connected communication channels are in the fourth arrangement sequence without exceeding the receiving capability of the terminal device.
  • the first K direct-connected communication channels, the fourth arrangement order is obtained by arranging the P third directly-connected communication channels.
  • the fourth arrangement order is obtained by arranging the P third directly connected communication channels based on the priority of each third directly connected communication channel.
  • the third directly connected communication channel with a high priority is located before the third directly connected communication channel with a low priority in the fourth arrangement order.
  • the fourth arrangement order is obtained by arranging the P third directly connected communication channels based on the priority and reception level of each third directly connected communication channel.
  • the third direct-connected communication channel with a high reception level is located before the third direct-connected communication channel with a low reception level in the fourth arrangement order; and, for two third direct-connected communication channels with the same reception level, the one with the higher priority
  • the third directly connected communication channel is located among the third directly connected communication channels with lower priority in the fourth arrangement order. forward.
  • the transmission level satisfies one or more of the following rules: the reception level of the direct synchronization channel is higher than the reception level of the direct data channel; the reception level of the direct data channel is higher than the reception level of the direct feedback channel Reception level; the reception level of the NR direct communication channel is higher or lower than the reception level of the LTE direct communication channel; or the reception level of the direct feedback channel used to carry hybrid automatic repeat response information is higher than that used to carry collisions Indicates the reception level of the direct feedback channel.
  • the format of the direct feedback channel includes a first format and/or a second format.
  • the time domain resources of the direct feedback channel in the first format occupy part of the symbols used for direct communication in one time slot; the time domain resources of the direct feedback channel in the second format occupy all the symbols used for direct communication in one time slot. symbol.
  • the direct feedback channel is on the time slot used for transmitting the direct feedback channel. Transmit in secondary format.
  • the direct feedback channel is transmitted in the second format on time slots included in the resource pool for NR direct communications.
  • the frequency domain resources of the direct feedback channel of the second format on one time slot and the frequency domain resources of the NR direct data channel on the same time slot are located in different frequency domain locations.
  • the embodiment of the present disclosure provides another possible structural schematic diagram of the direct-connect communication device involved in the above-mentioned embodiment.
  • the direct communication device 400 includes: a processor 402 and a bus 404 .
  • the direct-connect communication device may also include memory 401.
  • the direct-connect communication device may also include a communication interface 403.
  • Processor 402 may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with this disclosure.
  • the processor 402 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.
  • Processor 402 may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with this disclosure.
  • the processor 402 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.
  • Communication interface 403 is used to connect with other devices through a communication network.
  • the communication network can be Ethernet, wireless access network, wireless local area networks (WLAN), etc.
  • Memory 401 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • a type of dynamic storage device which can also be an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or can be used to carry or store instructions or data structures Without limitation, any other medium in the form of the desired program code and capable of being accessed by a computer.
  • EEPROM electrically erasable programmable read-only memory
  • the memory 401 may exist independently of the processor 402, and the memory 401 may be connected to the processor 402 through the bus 404.
  • the processor 402 is connected to store instructions or program codes. When the processor 402 calls and executes the instructions or program codes stored in the memory 401, it can implement the direct communication method provided by the embodiment of the present disclosure.
  • the memory 401 may also be integrated with the processor 402.
  • Bus 404 may be an extended industry standard architecture (EISA) bus, etc.
  • the bus 404 can be divided into an address bus, a data bus, a control bus, etc. For ease of presentation, only one thick line is used in Figure 8, but it does not mean that there is only one bus or one type of bus.
  • Embodiments of the present disclosure also provide a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by computer instructions to instruct relevant hardware.
  • the program can be stored in the above computer-readable storage medium. When executed, the program can include the processes of the above method embodiments. .
  • the computer-readable storage medium may be the memory of any of the aforementioned embodiments.
  • the above-mentioned computer-readable storage medium may also be the above-mentioned external storage device based on the direct-connect communication device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (secure digital) equipped on the above-mentioned direct-connect communication device. , SD) card, flash card, etc.
  • the computer-readable storage medium may also include both an internal storage unit of the direct-connect communication device and an external storage device.
  • the above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned direct communication device.
  • the above-mentioned computer-readable storage media can also be used to temporarily store data that has been output or is to be output.
  • the readable storage media includes non-transitory computer-readable storage media.
  • An embodiment of the present disclosure also provides a computer program product.
  • the computer product includes a computer program.
  • the computer program product When the computer program product is run on a computer, it causes the computer to perform any of the direct communication methods provided in the above embodiments.

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Abstract

提供一种直连通信方法及装置。该通信方法包括：从待发送的N个第一直连通信信道中选择M个第二直连通信信道，以及确定M个第二直连通信信道中各个第二直连通信信道的发射功率，所述M个第二直连通信信道的发射功率之和小于或等于终端设备的最大发射功率，N为正整数，M为小于或等于N的正整数；基于M个第二直连通信信道中各个第二直连通信信道的发射功率，发送该M个第二直连通信信道。

Description

直连通信方法及装置
本公开要求于2022年08月17日提交的、申请号为202210989335.5的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及通信技术领域，尤其涉及一种直连通信方法及装置。
背景技术
直连通信为直接在两个或更多个终端设备之间进行的无线通信。在这种通信中，在地理上彼此接近的两个或更多个终端设备能够在不通过任何网络设备的情况下直接通信。直连通信在日常生活中有着广泛的应用；示例性地，直连通信方式包括但不限于设备到设备(device to device，D2D)通信，例如地震、火灾等灾害的预警通信，以及车辆到所有(vehicle to everything，V2X)通信，例如远程驾驶、无人驾驶等。
发明内容
第一方面，本公开一些实施例提供一种直连通信方法。该直连通信方法包括：从待接收的N个第一直连通信信道中选择M个第二直连通信信道，以及确定M个第二直连通信信道中各个第二直连通信信道的发射功率，M个第二直连通信信道的发射功率之和小于或等于终端设备的最大发射功率，N为正整数，M为小于或等于N的正整数；基于M个第二直连通信信道中各个第二直连通信信道的发射功率，发射M个第二直连通信信道。
在一些实施例中，若N个第一直连通信信道包括一个新空口NR直连数据信道和N1个直连反馈信道，M个第二直连通信信道包括NR直连数据信道和/或N2个直连反馈信道；N1等于N-1，N2小于或等于min(N1，Nmax)，Nmax为终端设备支持同时发送的直连反馈信道的最大数目。
在一些实施例中，M个第二直连通信信道中各个第二直连通信信道的发射功率等于对应的需求功率。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和小于或等于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据信道和N1个直连反馈信道。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据和第一排列顺序中的前N2个直连反馈信道，第一排列顺序为N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，第二排列顺序为N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1大于Nmax，且Nmax个直连反馈信道的需求功率和NR直连数据信道的需求功率之和小于或等于终端设备的最大发射功率的情况下，M个第二直连 通信信道包括一个NR直连数据信道和Nmax个直连反馈信道。
在一些实施例中，在N1大于Nmax，且Nmax个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据信道和第一排列顺序中的前N2个直连反馈信道，第一排列顺序为N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1大于Nmax，且一个NR直连数据信道的需求功率和Nmax个直连反馈信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，第二排列顺序为N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，M个第二直连通信信道中各个第二直连通信信道采用相同的功率谱密度进行发送。
在一些实施例中，在M个第二直连通信信道包括NR直连数据信道和N2个直连反馈信道的情况下，N2个直连反馈信道中各个直连反馈信道的发射功率小于或等于终端设备的最大发射功率的X1倍，X1等于一个直连反馈信道的带宽与第一总带宽的比值，第一总带宽为N2个直连反馈信道的带宽与NR直连数据信道的带宽之和。
在一些实施例中，直连数据信道的发射功率小于或等于终端设备的最大发射功率的X2倍，X2等于直连数据信道的带宽与第一总带宽的比值。
在一些实施例中，终端设备的发送能力支持发送M个第二直连通信信道。
在一些实施例中，若终端设备的接收能力不支持接收N个第一直连通信信道，在不超过终端设备的接收能力的前提下，M个第二直连通信信道为第三排列顺序中的前M个第一直连通信信道，第三排列顺序由对N个第一直连通信信道进行排列而得到。
在一些实施例中，第三排列顺序基于各个第一直连通信信道的优先级，对N个第一直连通信信道进行排列而得到；优先级高的第一直连通信信道在第三排列顺序中位于优先级低的第一直连通信信道之前。
在一些实施例中，第三排列顺序基于各个第一直连通信信道的优先级和发送等级，对N个第一直连通信信道进行排列而得到；发送等级高的第一直连通信信道在第三排列顺序中位于发送等级低的第一直连通信信道之前；并且，对于具有相同发送等级的两个第一直连通信信道，优先级高的第一直连通信信道在第三排列顺序中位于优先级低的第一直连通信信道之前。
在一些实施例中，发送等级满足以下规则中的一项或者多项：直连同步信道的发送等级高于直连数据信道的发送等级；直连数据信道的发送等级高于直连反馈信道的发送等级；NR直连通信信道的发送等级高于或低于LTE直连通信信道的发送等级；或者，用于携带混合自动重传应答信息的直连反馈信道的发送等级高于用于携带冲突指示的直连反馈信道的发送等级。
在一些实施例中，上述方法还包括：在多个直连通信信道在时域上重叠的情况下，获取接收优先级和发送优先级；多个直连通信信道包括待发送的N个第一直连通信信道和待接收的P个第三直连通信信道，P为正整数；基于接收优先级和发送优先级的比较结果，确定执行接收操作或者执行发送操作。
在一些实施例中，上述基于接收优先级和发送优先级的比较结果，确定执行接收操作或者执行发送操作，包括：若发送优先级高于接收优先级，确定执行发送操作；或者，若发送优先级低于接收优先级，确定执行接收操作；或者，若发送优先级等于接收优先级，确定执行发送操作或者接收操作。
在一些实施例中，发送优先级为N个第一直连通信信道的优先级中最高的优先级。
在一些实施例中，接收优先级为P个第三直连通信信道的优先级中最高的优先级；或者，接收优先级为P个第三直连通信信道中所有目标类型的第三直连通信信道的优先级中最高的优先级，目标类型包括LTE直连数据信道、LTE直连同步信道、NR直连同步信道或者直连反馈信道中的一项或者多项。
在一些实施例中，在确定执行接收操作之后，上述方法还包括：从P个第三直连通信信道中选择K个第四直连通信信道，K为小于或等于P的正整数；接收K个第四直连通信信道。
在一些实施例中，若终端设备的接收能力不支持接收P个第三直连通信信道，在不超终端设备的接收能力的前提下，K个第四直连通信信道为第四排列顺序中的前K个直连通信信道，第四排列顺序为对P个第三直连通信信道进行排列而得到。
在一些实施例中，第四排列顺序基于各个第三直连通信信道的优先级，对P个第三直连通信信道进行排列而得到；优先级高的第三直连通信信道在第四排列顺序中位于优先级低的第三直连通信信道之前。
在一些实施例中，第四排列顺序基于各个第三直连通信信道的优先级和接收等级，对P个第三直连通信信道进行排列而得到；接收等级高的第三直连通信信道在第四排列顺序中位于接收等级低的第三直连通信信道之前；并且，对于具有相同接收等级的两个第三直连通信信道，优先级高的第三直连通信信道在第四排列顺序中位于优先级低的第三直连通信信道之前。
在一些实施例中，发送等级满足以下规则中的一项或者多项：直连同步信道的接收等级高于直连数据信道的接收等级；直连数据信道的接收等级高于直连反馈信道的接收等级；NR直连通信信道的接收等级高于或低于LTE直连通信信道的接收等级；或者，用于携带混合自动重传应答信息的直连反馈信道的接收等级高于用于携带冲突指示的直连反馈信道的接收等级。
在一些实施例中，直连反馈信道的格式包括第一格式和/或第二格式；第一格式的直连反馈信道的时域资源占用一个时隙中部分用于直连通信的符号；第二格式的直连反馈信道的时域资源占用一个时隙中所有用于直连通信的符号。
在一些实施例中，若用于传输直连反馈信道的时隙与用于LTE直连通信的资源池所包含的时隙重叠，直连反馈信道在用于传输直连反馈信道的时隙上以第二格式进行传输。
在一些实施例中，直连反馈信道在用于NR直连通信的资源池所包含的时隙上以第二格式进行传输。
在一些实施例中，一个时隙上的第二格式的直连反馈信道的频域资源与同一时隙上的NR直连数据信道的频域资源位于不同的频域位置。
第二方面，本公开一些实施例提供一种直连通信装置。该直连通信装置包括：处理模块，用于从待接收的N个第一直连通信信道中选择M个第二直连通信信道，以及确定M个第二直连通信信道中各个第二直连通信信道的发射功率，M个第二直连通信信道的发射功率之和小于或等于终端设备的最大发射功率，N为正整数，M为小于或等于N的正整数；发射模块，用于基于M个第二直连通信信道中各个第二直连通信信道的发射功率，发射M个第二直连通信信道。
在一些实施例中，若N个第一直连通信信道包括一个新空口NR直连数据信道和N1个直连反馈信道，M个第二直连通信信道包括NR直连数据信道和/或N2个直连反馈信道；N1等于N-1，N2小于或等于min(N1，Nmax)，Nmax为终端设备支持同时发送的直连反馈信道的最大数目。
在一些实施例中，M个第二直连通信信道中各个第二直连通信信道的发射功率等于其对应的需求功率。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和小于或等于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据信道和N1个直连反馈信道。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据和第一排列顺序中的前N2个直连反馈信道，第一排列顺序为N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，第二排列顺序为N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1大于Nmax，且Nmax个直连反馈信道的需求功率和NR直连数据信道的需求功率之和小于或等于终端设备的最大发射功率的情况下，M个第二直连通信信道包括一个NR直连数据信道和Nmax个直连反馈信道。
在一些实施例中，在N1大于Nmax，且Nmax个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据信道和第一排列顺序中的前N2个直连反馈信道，第一排列顺序为N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1大于Nmax，且一个NR直连数据信道的需求功率和Nmax个直连反馈信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，第二排列顺序为N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，M个第二直连通信信道中各个第二直连通信信道采用相同的功率谱密度进行发送。
在一些实施例中，在M个第二直连通信信道包括NR直连数据信道和N2个直连反馈信道的情况下，N2个直连反馈信道中各个直连反馈信道的发射功率小于或等于终端 设备的最大发射功率的X1倍，X1等于一个直连反馈信道的带宽与第一总带宽的比值，第一总带宽为N2个直连反馈信道的带宽与NR直连数据信道的带宽之和。
在一些实施例中，直连数据信道的发射功率小于或等于终端设备的最大发射功率的X2倍，X2等于直连数据信道的带宽与第一总带宽的比值。
在一些实施例中，终端设备的发送能力支持发送M个第二直连通信信道。
在一些实施例中，若终端设备的接收能力不支持接收N个第一直连通信信道，在不超过终端设备的接收能力的前提下，M个第二直连通信信道为第三排列顺序中的前M个第一直连通信信道，第三排列顺序由对N个第一直连通信信道进行排列而得到。
在一些实施例中，第三排列顺序基于各个第一直连通信信道的优先级，对N个第一直连通信信道进行排列而得到；优先级高的第一直连通信信道在第三排列顺序中位于优先级低的第一直连通信信道之前。
在一些实施例中，第三排列顺序基于各个第一直连通信信道的优先级和发送等级，对N个第一直连通信信道进行排列而得到；发送等级高的第一直连通信信道在第三排列顺序中位于发送等级低的第一直连通信信道之前；并且，对于具有相同发送等级的两个第一直连通信信道，优先级高的第一直连通信信道在第三排列顺序中位于优先级低的第一直连通信信道之前。
在一些实施例中，发送等级满足以下规则中的一项或者多项：直连同步信道的发送等级高于直连数据信道的发送等级；直连数据信道的发送等级高于直连反馈信道的发送等级；NR直连通信信道的发送等级高于或低于LTE直连通信信道的发送等级；或者，用于携带混合自动重传应答信息的直连反馈信道的发送等级高于用于携带冲突指示的直连反馈信道的发送等级。
在一些实施例中，上述处理模块，还用于在多个直连通信信道在时域上重叠的情况下，获取接收优先级和发送优先级；多个直连通信信道包括待发送的N个第一直连通信信道和待接收的P个第三直连通信信道，P为正整数；基于接收优先级和发送优先级的比较结果，确定执行接收操作或者执行发送操作。
在一些实施例中，上述处理模块，用于若发送优先级高于接收优先级，确定执行发送操作；或者，若发送优先级低于接收优先级，确定执行接收操作；或者，若发送优先级等于接收优先级，确定执行发送操作或者接收操作。
在一些实施例中，发送优先级为N个第一直连通信信道的优先级中最高的优先级。
在一些实施例中，接收优先级为P个第三直连通信信道的优先级中最高的优先级；或者，接收优先级为P个第三直连通信信道中所有目标类型的第三直连通信信道的优先级中最高的优先级，目标类型包括LTE直连数据信道、LTE直连同步信道、NR直连同步信道或者直连反馈信道中的一项或者多项。
在一些实施例中，上述处理模块，还用于在确定执行接收操作之后，从P个第三直连通信信道中选择K个第四直连通信信道，K为小于或等于P的正整数；接收K个第四直连通信信道。
在一些实施例中，若终端设备的接收能力不支持接收P个第三直连通信信道，在不超终端设备的接收能力的前提下，K个第四直连通信信道为第四排列顺序中的前K 个直连通信信道，第四排列顺序为对P个第三直连通信信道进行排列而得到。
在一些实施例中，第四排列顺序基于各个第三直连通信信道的优先级，对P个第三直连通信信道进行排列而得到；优先级高的第三直连通信信道在第四排列顺序中位于优先级低的第三直连通信信道之前。
在一些实施例中，第四排列顺序基于各个第三直连通信信道的优先级和接收等级，对P个第三直连通信信道进行排列而得到；接收等级高的第三直连通信信道在第四排列顺序中位于接收等级低的第三直连通信信道之前；并且，对于具有相同接收等级的两个第三直连通信信道，优先级高的第三直连通信信道在第四排列顺序中位于优先级低的第三直连通信信道之前。
在一些实施例中，发送等级满足以下规则中的一项或者多项：直连同步信道的接收等级高于直连数据信道的接收等级；直连数据信道的接收等级高于直连反馈信道的接收等级；NR直连通信信道的接收等级高于或低于LTE直连通信信道的接收等级；或者，用于携带混合自动重传应答信息的直连反馈信道的接收等级高于用于携带冲突指示的直连反馈信道的接收等级。
在一些实施例中，直连反馈信道的格式包括第一格式和/或第二格式；第一格式的直连反馈信道的时域资源占用一个时隙中部分用于直连通信的符号；第二格式的直连反馈信道的时域资源占用一个时隙中所有用于直连通信的符号。
在一些实施例中，若用于传输直连反馈信道的时隙与用于LTE直连通信的资源池所包含的时隙重叠，直连反馈信道在用于传输直连反馈信道的时隙上以第二格式进行传输。
在一些实施例中，直连反馈信道在用于NR直连通信的资源池所包含的时隙上以第二格式进行传输。
在一些实施例中，一个时隙上的第二格式的直连反馈信道的频域资源与同一时隙上的NR直连数据信道的频域资源位于不同的频域位置。
第三方面，本公开一些实施例提供一种终端设备。该终端设备包括存储器、处理器以及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现本公开实施例提供的任一项所述的直连通信方法。
第四方面，本公开一些实施例提供一种计算机可读存储介质，所述计算机可读存储介质包括计算机指令。当所述计算机指令在终端设备上运行时，使得所述终端设备执行本申请实施例提供的任一项所述的直连通信方法。
附图说明
图1为根据一些实施例的一种直连通信系统的结构示意图；
图2为根据一些实施例的一种时隙的资源配置图；
图3为根据一些实施例的另一种时隙的资源配置图；
图4为根据一些实施例的一种直连通信的方法流程示意图；
图5为根据一些实施例的另一种直连通信方法的流程示意图；
图6为根据一些实施例的又一种直连通信方法的流程示意图；
图7为根据一些实施例的一种直连通信装置的结构示意图；
图8为根据一些实施例的另一种直连通信装置的结构示意图。
具体实施方式
为使本领域的技术人员更好地理解本公开实施例的技术方案，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整的描述。
在本公开的描述中，除非另有说明，“/”表示“或”的意思，例如，A/B可以表示A或B。本文中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：仅A，仅B，以及A和B。此外，“至少一个”是指一个或多个，“多个”是指两个或两个以上。“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
需要说明的是，本公开中，“示例性地”或者“例如”等词用于表示作为例子、例证或说明。本公开中被描述为“示例性地”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性地”或者“例如”等词旨在以详细方式呈现相关概念。
直连通信，也可以称之为侧行链路(sidelink，SL)通信，边链路通信，或旁链路通信，或PC5接口链路通信，或者终端设备间链路通信。直连通信为在多个终端设备(例如两个终端设备)之间直接进行的无线通信。在这种直连通信中，在地理上彼此接近的多个终端设备能够在不通过任何网络设备的情况下直接通信。直连通信中的数据传输不同于典型的蜂窝网络通信，典型的蜂窝网络通信包括上行链路(uplink，UL)传输(也即终端设备向网络设备发送数据)以及下行链路(downlink，DL)传输(也即网络设备向终端设备发送数据)。但在直连通信中，数据是通过诸如PC5接口之类的空中接口从发送端的终端设备直接发送到接收端的终端设备，而不通过任何网络设备。直连通信方式包括但不限于设备到设备(device to device，D2D)通信，例如地震、火灾等灾害的预警通信，车辆到所有(vehicle-to-everything，V2X)通信，例如远程驾驶、无人驾驶等。
示例性地，图1中示出了本公开实施例提供的一种直连通信系统的结构示意图。如图1所示，在直连通信系统中，终端设备之间有业务需要传输时，业务数据不经过网络侧设备(即不经过图1中虚线所示的终端设备与网络侧设备之间的蜂窝链路的转发)，而是直接由数据源终端设备(如图1所示的终端设备1)通过侧行链路传输给目标终端设备(如图1所示的终端设备2)。这种终端设备1与终端设备2之间直接进行通信的模式具有明显区别于传统蜂窝系统通信模式的特征：对于能够应用直连通信的近距离通信用户来说，直连通信不但节省了无线频谱资源，而且降低了核心网的数据传输压力，能够减少系统资源占用，增加蜂窝通信系统频谱效率，降低终端设备发射功耗，并在很大程度上节省网络运营成本。
此外，直连通信系统中的终端设备也可以称为终端、用户设备(user equipment，UE)、移动台、移动终端等。终端设备可以是手机、平板电脑、带无线收发功能的电脑、虚拟现实终端设备、增强现实终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程手术中的无线终端、运输安全中的无线终端、智慧城市中的无线终端、智慧家庭中的无线终端等。本公开的实施例对终端设备所采用的技术和设备形态不做限 定。
在一些实施例中，本公开实施例中的直连通信信道可以从通信制式上分类为长期演进(long term evolution，LTE)直连通信信道、新空口(new radio，NR)直连通信信道、或者未来网络(例如6G)下的直连通信信道。本公开实施例中的直连通信信道可以从功能作用上分类为直连数据信道、直连同步信道和直连反馈信道。
在一些实施例中，直连数据信道为用于传输数据或者控制信息的信道。示例性地，直连数据信道可以包括物理侧行控制信道(physical sidelink control channel，PSCCH)和物理侧行共享信道(physical sidelink sharing channel，PSSCH)。
在一些实施例中，直连同步信道为用于实现时间同步的信道。示例性地，直连同步信道可以包括物理侧行广播信道(physical sidelink broadcast channel，PSBCH)、侧行链路主同步信号(primary sidelink synchronization signal，PSSS)和/或侧行链路辅同步信号(secondary sidelink synchronization signal，SSSS)。
在一些实施例中，直连反馈信道为用于传输反馈信道的信道，反馈信息可以为混合自动重传请求确认(hybrid automatic repeat request-ACK，HARQ-ACK)信息、冲突指示等，对此不作限定。示例性地，直连反馈信道可以包括物理侧行反馈信道(physical sidelink feedback channel，PSFCH)。
可以理解的是，不同通信制式下的直连通信信道具有不同的类型。示例性地，LTE直连通信信道的信号类型包括LTE直连数据信道和LTE直连同步信道。NR直连通信信道的信号类型包括NR直连数据信道、NR直连同步信道以及直连反馈信道。
目前，考虑到载波或频道的资源有限，且发展NR技术的过程中期望实现从LTE技术到NR技术的平滑过渡，NR直连通信的首次实现以非独立(non-standalone，NSA)模式使用LTE技术基础架构，并使用动态频谱共享(dynamic spectrum sharing，DDS)使得NR直连通信信道与LTE直连通信信道实现载波共存。这样，终端设备在一个时隙上可能需要同时接收LTE直连数据信道、NR直连数据信道以及直连反馈信道。但是，相关技术中直连反馈信道的时域资源的配置会导致终端设备的自动增益控制(automatic gain control，AGC)出现问题。如图2所示，相关技术中，在一个时隙上，NR直连反馈信道和NR直连数据信道时分地占用不同的符号。LTE直连通信不支持直连反馈信道，因此LTE直连数据信道占用一个时隙上所有可用的符号。这样，在一个时隙的不同符号上，由于终端设备从接收LTE直连数据信道和NR直连数据信道，切换为接收LTE直连数据信道和直连反馈信道，从而导致终端设备的接收功率发生变化，进而影响终端设备的AGC。
为了解决同一时隙上传输LTE直连数据信道、NR直连数据信道以及直连反馈信道的场景下可能存在的AGC问题，在本公开实施例中，直连反馈信道支持一种新的格式。为了便于区别，下文中将相关技术中的直连反馈信道的旧的格式称为第一格式，将本公开实施例提供的直连反馈信道的新的格式称为第二格式。在一些实施例中，第一格式也可以被称为短格式，第二格式也可以被称为长格式。
在一些实施例中，第一格式的直连反馈信道的时域资源占用一个时隙中部分可用符号。例如一个时隙中的最后1～2个符号。第二格式的直连反馈信道的时域资源占用 一个时隙中所有可用符号。可用符号是指配置为用于直连通信的符号。
在一些实施例中，在采用第二格式的直连反馈信道的情况下，NR直连数据信道的时域资源也可以占用一个时隙中所有可用符号。也即，第二格式的直连反馈信道的时域资源可以和NR直连数据信道的时域资源占用一个时隙中相同的符号。
在一些实施例中，第二格式的直连反馈信道的时域资源可以配置为具有周期性的。例如，在用于NR直连通信的资源池所包含的时隙上，每L个时隙配置一个用于传输第二格式的直连反馈信道的时隙。
需要说明的是，资源池是一个逻辑上的概念，一个资源池包括多个物理资源(也即时域资源和频域资源)，任意一个物理资源可以用于传输数据。一个终端设备进行数据传输时，需要从资源池中使用一个物理资源进行传输。在一种情况下，终端受到网络设备的控制，根据网络设备发送的指示信息，从资源池中选择一个物理资源进行数据传输。在另一种情况下，终端自主从资源池中选择一个物理资源进行数据传输。
在一些实施例中，若用于传输所述直连反馈信道的时隙与用于LTE直连通信的资源池所包含的时隙重叠，所述直连反馈信道在所述用于传输所述直连反馈信道的时隙上以第二格式进行传输。
在另一些实施例中，基于配置或者预配置以确定用于NR直连通信的资源池支持的直连反馈信道的格式。例如，可以配置或者预配置用于NR直连通信的资源池采用直连反馈信道的第二格式。从而，所述直连反馈信道在用于NR直连通信的资源池所包含的用于传输直连反馈信道的时隙上均以第二格式进行传输。
在一些实施例中，一个第二格式的直连反馈信道的频域资源占用多个子载波间隔(sub-carrier spacing，SCS)。例如，第二格式的直连反馈信道的频域资源的粒度可以是资源元素(resource element，RE)级别的，或者资源块(resource block，RB)级别的。一个RE在频域上对应一个SCS。一个RB在频域上对应12个SCS。
在一些实施例中，在频域上，可以配置多个连续的或者离散的直连反馈信道的频域资源。例如，以第二格式的直连反馈信道的频域资源的粒度为RB级别为例，可以配置多个连续的RB用于传输直连反馈信道。
在一些实施例中，在一个时隙上，第二格式的直连反馈信道的频域资源和直连数据信道的频域资源位于不同的频域位置。也就是说，第二格式的直连反馈信道和直连数据信道采用频分的方式来传输。
在一些实施例中，终端设备可以基于预配置或者网络设备配置来确定直连反馈信道的时频资源。例如，终端设备可以接收直连反馈信道的资源配置信息，并基于直连反馈信道的资源配置信息来确定直连反馈信道的时频资源。示例性地，直连反馈信道的资源配置信息可以包括PSFCH的格式信息、PSFCH资源池的标识信息、PSFCH的符号个数信息等，对此不作限定。
在直连反馈信道采用第二格式的情况下，如图3所示，若终端设备在一个时隙上需要同时接收LTE直连数据信道、NR直连数据信道以及第二格式的直连反馈信道，由于LTE直连数据信道、NR直连数据信道以及第二格式的直连反馈信道以频分的方式传输，在该时隙的各个用于直连通信的符号上，终端设备可以采用相同的接收功率来接收，从 而避免终端设备的AGC出现问题。
以NR直连通信信道与LTE直连通信信道实现载波共存的场景为例，终端设备在一个时隙上可能需要同时发送多个直连通信信道(例如NR直连数据信道、LTE直连数据信道、直连反馈信道等)。但是，终端设备具有最大发射功率的限制，因此如何进行功率分配是亟待解决的技术问题。
为了解决该技术问题，本公开实施例提供一种直连通信方法，如图4所示，该方法包括以下步骤。
S101、从待发送的N个第一直连通信信道中选择M个第二直连通信信道，以及确定M个第二直连通信信道中各个第二直连通信信道的发射功率。M个第二直连通信信道的发射功率之和小于或等于终端设备的最大发射功率，N为正整数，M为小于或等于N的正整数。
在一些实施例中，N个第一直连通信信道可以包括以下一项或者多项。
一个NR直连数据信道；
一个LTE直连数据信道；
一个或多个直连反馈信道；
NR直连同步信道；或者，
LTE直连同步信道。
在一些实施例中，N个第一直连通信信道中的直连反馈信道可以是采用第二格式的直连反馈信道，也可以是采用第一格式的直连反馈信道，对此不作限定。
在一些实施例中，终端设备的最大发射功率为终端设备的最大发送能力对应的发射功率；或者，终端设备的最大发射功率为进行DL功率控制时终端设备所对应的发射功率，以避免终端设备的信号发射对基站信号造成干扰；或者，终端设备的最大发射功率为进行SL功率控制时终端设备所对应的发射功率，以降低对进行直连通信的两个终端设备的距离对通信效果造成的影响；或者，终端设备的最大发射功率为进行拥塞功率控制时终端设备所对应的发射功率，以降低直连通信的网络拥塞。
在一些实施例中，终端设备的最大发射功率可以通过预配置或者网络配置来确定，本公开实施例对此不作限定。
在一些实施例中，终端设备在发射LTE直连通信信道和NR直连通信信道可以有各自的最大发射功率，终端设备的最大发射功率为LTE直连通信信道对应的最大发射功率或NR直连通信信道对应的最大发射功率。在一些示例中，终端设备的最大发射功率为LTE直连通信信道对应的最大发射功率和NR直连通信信道对应的最大发射功率的最大值；在另一些示例中，终端设备的最大发射功率为LTE直连通信信道对应的最大发射功率和NR直连通信信道对应的最大发射功率的最小值。
在本公开实施例中，上述N个第一直连通信信道在时域上是重叠的。可以理解的是，两个直连通信信道在时域上的重叠可以是部分重叠或者全部重叠。示例性地，两个直连通信信道在时域上部分重叠，可以是指两个直连通信信道占用的符号中的至少一个符号是重叠的。两个直连通信信道在时域上全部重叠，可以是指两个直连通信信道占用的符号全部重叠。
下面结合N个第一直连通信信道的不同情况，详细说明M个第二直连通信信道的选择方式。
情况一、N个第一直连通信信道包括一个NR直连数据信道(或者一个NR直连同步数据信道)和N1个直连反馈信道，N1等于N-1。这种情况下，M个第二直连通信信道包括一个NR直连数据信道(或者一个NR直连同步信道)和/或N2个直连反馈信道，N2小于或等于min(N1，Nmax)，Nmax为终端设备支持同时发送的直连反馈信道的最大数目。可以理解的是，N2个直连反馈信道为上述N1个直连反馈信道中的部分或者全部直连反馈信道。
下文以N个第一直连通信信道包括一个NR直连数据信道和N1个直连反馈信道为例进行说明。针对N个第一直连通信信道包括一个NR直连同步信道和N1个直连反馈信道的情况，可以将下文中体积“NR直连数据信道”替换为“NR直连同步信道”。
在一些实施例中，M个第二直连通信信道中各个第二直连通信信道的发射功率为对应的需求功率。基于此，M个第二直连通信信道通过以下方式1-1至方式1-6中的任意一种来确定。
方式1-1、在N1小于或等于Nmax，且一个NR直连数据信道的需求功率和N1个直连反馈信道的需求功率之和小于或等于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括一个所述NR直连数据信道和所述N1个直连反馈信道。也即，M个第二直连通信信道即为N个第一直连通信信道，M等于N。
方式1-2、在N1小于或等于Nmax，且一个所述NR直连数据信道的需求功率和所述N1个直连反馈信道的需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括一个所述NR直连数据信道和第一排列顺序中的前N2个直连反馈信道。所述第一排列顺序为所述N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，终端设备可以先计算剩余功率，剩余功率等于终端设备最大发射功率与NR直连数据信道的需求功率之差。之后，终端设备可以基于N1个直连反馈信道中各个直连反馈信道的需求功率，按照第一排列顺序依次对直连反馈信道的需求功率进行累加。在第一排列顺序中的前N2+1个直连反馈信道的需求功率之和大于剩余功率，而第一排列顺序中的前N2个直连反馈信道的需求功率之和小于或等于剩余功率的情况下，终端设备可以确定N2的详细数值，或者说，终端设备可以确定M个第二直连通信信道所应该包含的N2个直连反馈信道。
例如，假设N个第一直连通信信道包括1个NR PSCCH/PSSCH，以及5个PSFCH。NR PSCCH/PSSCH的需求功率记为P0。5个PSFCH记为PSFCH1至PSFCH5，PSFCH1至PSFCH5的需求功率分别记为P1-P5。假设将PSFCH1至PSFCH5按照优先级从高到底的顺序进行排列得到的第一排列顺序为：PSFCH1、PSFCH4、PSFCH3、PSFCH2以及PSFCH5。终端设备的最大发射功率即为Pmax。假设P0+P1+P4≤Pmax，而P0+P1+P4+P3>Pmax，则可以确定N2的详细数值为2。也即，M个第二直连通信信道包括NR PSCCH/PSSCH、PSFCH1和PSFCH4。
方式1-3、在N1小于或等于Nmax，且一个所述NR直连数据信道的需求功率和所述 N1个直连反馈信道的需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，所述第二排列顺序为所述N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，终端设备可以基于各个第一直连通信信道的需求功率，按照第二排列顺序依次对第一直连通信信道的需求功率进行累加。在第二排列顺序中的前M个第一直连通信信道的需求功率之和小于或等于终端设备的最大发射功率，且第二排列顺序中的前M+1个第一直连通信信道的需求功率之和大于终端设备的最大发射功率，终端设备可以确定M的详细数值。
例如，假设N个第一直连通信信道包括1个NR PSCCH/PSSCH，以及5个PSFCH。NR PSCCH/PSSCH的需求功率记为P0。5个PSFCH记为PSFCH1至PSFCH5，PSFCH1至PSFCH5的需求功率分别记为P1-P5。将N个第一直连通信信道按照优先级从高到底进行排列得到的第二排列顺序为：PSFCH1、PSFCH4、PSFCH3、PSFCH2、PSFCH5、NR PSCCH/PSSCH。终端设备的最大发射功率即为Pmax。假设P1+P4+P3≤Pmax，而P1+P4+P3+P2>Pmax，则可以确定M的详细数值为3。也即，M个第二直连通信信道包括PSFCH1、PSFCH4和PSFCH3。
方式1-4、在N1大于Nmax，且一个所述NR直连数据信道的需求功率和Nmax个直连反馈信道的需求功率之和小于或等于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括一个所述NR直连数据信道和Nmax个直连反馈信道，也即N2等于Nmax。在一些实施例中，Nmax个直连反馈信道为第一排列顺序中的前Nmax个直连反馈信道。
方式1-5、在N1大于Nmax，且一个所述NR直连数据信道的需求功率和Nmax个直连反馈信道的需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括一个所述NR直连数据和第一排列顺序中的前N2个直连反馈信道，所述第一排列顺序为所述N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
方式1-6、在N1大于Nmax，且一个所述NR直连数据信道的需求功率和Nmax个直连反馈信道的需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括第二排列顺序中的前M个直连通信信道，所述第二排列顺序为所述N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在另一些实施例中，M个第二直连通信信道中的各个第二直连通信信道采用相同的功率谱密度进行发送。也就是说，各个第二直连通信信道在一个频域单元(例如PRB)上的发射功率是相同的。
在一些实施例中，在M个第二直连通信信道包括一个NR直连数据信道和N2个直连反馈信道的情况下，N2个直连反馈信道中各个直连反馈信道的发射功率小于或等于终端设备的最大发射功率的X1倍，X1等于一个直连反馈信道的带宽与第一总带宽的比值，第一总带宽为N2个直连反馈信道的带宽与一个NR直连数据信道的带宽之和。
示例性地，这里以功率为dB(分贝)值，即功率单位为dBm进行说明，在一个数据 传输时机occasion i上，上述直连反馈信道的发射功率满足以下关系。
在上述公式中，PPSFCH(i)为直连反馈信道的发射功率，为NR直连数据信道的带宽，为直连反馈信道的带宽，为N2个为直连反馈信道的带宽，Pcmax为终端设备的最大发射功率。公知的，指数加对应线性值的乘。这里，
在一些实施例中，在M个第二直连通信信道包括一个NR直连数据信道和N2个直连反馈信道的情况下，NR直连数据信道的发射功率小于或等于终端设备的最大发射功率的X2倍，X2等于NR直连数据信道的带宽与第一总带宽的比值，第一总带宽为N2个直连反馈信道的带宽与一个NR直连数据信道的带宽之和。
示例性地，在一个数据传输时机occasion i上，上述NR直连数据信道的发射功率满足以下关系。
在上述公式中，PPSSCH(i)为NR直连数据信道的发射功率，为NR直连数据信道的带宽，为直连反馈信道的带宽，为N2个为直连反馈信道的带宽，Pcmax为终端设备的最大发射功率。公知的，指数加对应线性值的乘。这里，
在一些实施例中，M个第二直连通信信道中的各个第二直连通信信道采用相同的功率谱密度进行发送，适用于终端设备未使能DL功率控制、SL功率控制和/或拥塞控制的情况下。
情况二、N个第一直连通信信道包括一个NR直连同步信道和一个NR直连数据信道。
在一些实施例中，在NR直连同步信道的需求功率与NR直连数据信道的需求功率之和小于或等于终端设备的最大发射功率的情况下，M个第二直连通信信道包括一个NR直连同步信道和一个NR直连数据信道。也即，M个第二直连通信信道即为N个第一直连通信信道，N等于M。基于此，NR直连数据信道的发射功率即为其对应的需求功率。NR直连同步信道的发射功率即为其对应的需求功率。
在另一些实施例中，在NR直连同步信道的需求功率与NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，或者在终端设备不支持同时发送NR直连数据信道和NR直连同步信道的情况下，M等于1，也即M个第二直连通信信道包含NR直连同步信道或者NR直连数据信道中的一个。示例性地，若NR直连同步信道的优先级高于NR直连数据信道的优先级，则M个第二直连通信信道包括一个NR直连同步信道；或者，若NR直连同步信道的优先级低于NR直连数据信道的优先级，则M个第二直连通信信道包括一个直连数据信道；又或者，若NR直连同步信道的优先级等于NR直连数据信道的优先级，则根据网络设备的配置或者预配置，确定M个第二直连通信信道包括的是NR直连数据信道还是NR直连同步信道。可以理解的是，在以NR直连数据信道作为实际发送的直连通信信道(也即第二直连通信信道)的情况下，NR直连数据信道的发射功率为其对应的需求功率。在以NR直连同步信道作为实际发 送的直连通信信道(也即第二直连通信信道)的情况下，NR直连同步信道的发射功率为其对应的需求功率。
在另一些实施例中，M个第二直连通信信道可以包括一个NR直连同步信道和一个NR直连数据信道。基于此，NR直连同步信道与NR直连数据信道采样相同的功率谱密度进行发送。也即，NR直连同步信道和NR直连数据信道在一个频域单元上的发射功率是相同的。
在一些实施例中，在NR直连同步信道与NR直连数据信道采样相同的功率谱密度进行发送的情况下，NR直连同步信道的发射功率小于或等于终端设备的最大发射功率的X3倍。X3为NR直连同步信道的带宽与第二总带宽之间的比值。第二总带宽为NR直连同步信道的带宽与NR直连数据信道的带宽之和。
示例性地，在一个数据传输时机occasion i上，NR直连同步信道的发射功率满足以下关系。
在上述公式中，PS-SSB(i)为NR直连同步信道的发射功率，为NR直连数据信道的带宽，为直连同步信道的带宽，Pcmax为终端设备的最大发射功率。公知的，指数加对应线性值的乘。这里，
在一些实施例中，在NR直连同步信道与NR直连数据信道采样相同的功率谱密度进行发送的情况下，NR直连数据信道的发射功率小于或等于终端设备的最大发射功率的X4倍。X4为NR直连数据信道的带宽与第二总带宽之间的比值。第二总带宽为NR直连同步信道的带宽与NR直连数据信道的带宽之和。
示例性地，在一个数据传输时机occasion i上，NR直连同步信道的发射功率满足以下关系。
在上述公式中，PPSSCH(i)为NR直连数据信道的发射功率，为NR直连数据信道的带宽，为直连同步信道的带宽，Pcmax为终端设备的最大发射功率。公知的，指数加对应线性值的乘。这里，
在一些实施例中，NR直连同步信道与NR直连数据信道采样相同的功率谱密度进行发送，适用于NR直连同步信道的需求功率与NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，或者适用于终端设备未使能DL功率控制、SL功率控制和/或拥塞控制的情况下。
情况三、N个第一直连通信信道包括一个NR直连同步信道，一个NR直连数据信道和N1个直连反馈信道，N1等于N-2。在这种情况下，M个第二直连通信信道包括一个NR直连同步信道，一个NR直连同步信道，和/或N2个直连反馈信道，N2小于或等于min(N1，Nmax)，Nmax为终端设备支持同时发送的直连反馈信道的最大数目。可以理解的是，N2个直连反馈信道为上述N1个直连反馈信道中的部分或者全部直连反馈信道。
在一些实施例中，M个第二直连通信信道中各个第二直连通信信道的发射功率为其对应的需求功率。基于此，M个第二直连通信信道通过以下方式1-1至方式1-6中的任意一种来确定。
方式1-1、在N1小于或等于Nmax，且一个NR直连数据信道的需求功率，一个NR直连同步信道的需求功率，N1个直连反馈信道的需求功率三者之和小于或等于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括一个所述NR直连数据信道，一个NR直连同步信道和所述N1个直连反馈信道。也即，M个第二直连通信信道即为N个第一直连通信信道，M等于N。
方式1-2、在N1小于或等于Nmax，且上述三者需求功率之和大于设备的最大发射功率的情况下，所述M个第二直连通信信道包括先按照优先级顺序发送一个所述NR直连数据信道和一个NR直连同步信道，若功率有剩余则按照第一排列顺序中的前N2个直连反馈信道，所述第一排列顺序为所述N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，终端设备可以先计算剩余功率，剩余功率等于终端设备最大发射功率与NR直连数据信道的需求功率和NR直连同步信道需求功率之差。之后，终端设备可以基于N1个直连反馈信道中各个直连反馈信道的需求功率，按照第一排列顺序依次对直连反馈信道的需求功率进行累加。在第一排列顺序中的前N2+1个直连反馈信道的需求功率之和大于剩余功率，而第一排列顺序中的前N2个直连反馈信道的需求功率之和小于或等于剩余功率的情况下，终端设备可以确定N2的详细数值，或者说，终端设备可以确定M个第二直连通信信道所应该包含的N2个直连反馈信道。
方式1-3、在N1小于或等于Nmax，且上述三者需求功率之和大于终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道。所述第二排列顺序为所述N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，终端设备可以基于各个第一直连通信信道的需求功率，按照第二排列顺序依次对第一直连通信信道的需求功率进行累加。在第二排列顺序中的前M个第一直连通信信道的需求功率之和小于或等于终端设备的最大发射功率，且第二排列顺序中的前M+1个第一直连通信信道的需求功率之和大于终端设备的最大发射功率，终端设备可以确定M的详细数值。
方式1-4、在N1大于Nmax，且上述三者需求功率之和小于或等于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括一个所述NR直连数据信道，一个所述NR直连同步信道和Nmax个直连反馈信道，也即N2等于Nmax。在一些实施例中，Nmax个直连反馈信道为第一排列顺序中的前Nmax个直连反馈信道。
方式1-5、在N1大于Nmax，且上述三者需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括首先按照一个所述NR直连数据和一个所述NR直连同步信道的优先级顺序发送二者中的一个或两个。若功率有剩余，则继续发送第一排列顺序中的前N2个直连反馈信道。所述第一排列顺序为所述N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
方式1-6、在N1大于Nmax，且上述三者需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括第二排列顺序中的前M个直连通信信道。所述第二排列顺序为所述N个第一直连通信信道按照优先级从高到低的顺序进行 排列而得到的排列顺序。
在另一些实施例中，M个第二直连通信信道中的各个第二直连通信信道采用相同的功率谱密度进行发送。也就是说，各个第二直连通信信道在一个频域单元(例如PRB)上的发射功率是相同的。
在一些实施例中，在M个第二直连通信信道包括一个NR直连数据信道，一个NR直连同步信道和N2个直连反馈信道的情况下，N2个直连反馈信道中各个直连反馈信道的发射功率小于或等于终端设备的最大发射功率的X1倍，X1等于一个直连反馈信道的带宽与第一总带宽的比值。第一总带宽为N2个直连反馈信道的带宽，一个NR直连数据信道的带宽和一个NR直连同步信道的带宽的三者之和。NR直连数据信道的发射功率小于或等于终端设备的最大发射功率的X2倍，X2等于NR直连数据信道的带宽与第一总带宽的比值。NR直连同步信道的发射功率小于或等于终端设备的最大发射功率的X3倍，X3等于NR直连同步信道的带宽与第一总带宽的比值。
在一些实施例中，M个第二直连通信信道中的各个第二直连通信信道采用相同的功率谱密度进行发送，适用于终端设备未使能DL功率控制、SL功率控制和/或拥塞控制的情况下。
下面对不同类型的第一直连通信信道的需求功率的计算方式进行介绍。
(1)直连反馈信道的需求功率
在一些示例中，若使能了基于下行的PSFCH功率控制，即下行功控参数(dl-P0-PSFCH)被预配置在终端设备内或由网络设备配置，则PSFCH的需求功率满足以下关系。
PPSFCH，one＝PO，PSFCH+10log10(2μ)+αPSFCH·PL。
在上述公式中，PPSFCH，one为一个PRB上PSFCH的需求功率，PO，PSFCH为期望接收到的PSFCH功率或功率密度，由配置或者预配置的dl-P0-PSFCH参数指示，αPSFCH由配置或者预配置的功率控制参数dl-Alpha-PSFCH指示或者未配置时该值等于1，μ为当前使用的子载波间隔(SCS，subcarrier spacing)，PL为基于一个参考信号(RS，reference signal)测量的路径损耗。上述配置或预配置指的是由网络设备下发信令配置或由终端设备预配置，以下不再赘述。
在另一些示例中，预配置或通过网络设备配置一个PSFCH的需求功率PPSFCH，one。例如，可以预配置或通过网络设备配置PSFCH的绝对值功率，也可以配置PSFCH的相对值功率，例如将相对值功率配置为最大功率的X倍。在一些实施例中，X为小于1的有理数。示例性地，PSFCH的需求功率满足以下关系。
PPSFCH，one＝Pcmax+10log10(X)。
在上述公式中，PPSFCH，one为一个PRB上PSFCH的需求功率，Pcmax为UE最大发射功率，X为常数。
在又一些示例中，若一个PSFCH占用的物理资源块的个数为则该PSFCH的需求功率可以表示为。
在上述公式中，为一个PSFCH占用的PRB个数。
(2)直连数据信道的需求功率
在一些示例中，若使能了基于下行和/或直连通信的PSCCH/PSSCH功率控制，即下行功控参数dl-P0-PSSCH-PSCCH和/或直连通信功率控制参数sl-P0-PSSCH-PSCCH被预配置或通过网络设备配置，则在一个数据传输时机occasion i上，PSCCH/PSSCH需求功率满足以下关系。
PPSSCH(i)＝min(PCMAX，PMAX，CBR，min(PPSSCH，D(i)，PPSSCH，SL(i)))[dBm]。
在上述公式中，PPSSCH(i)为PSCCH/PSSCH的需求功率；PCMAX为UE最大发射功率，PMAX，CBR为基于拥塞控制的功率要求下的最大发射功率，即基于当前信道占用信道忙碌率(channel busy ratio，CBR)和PSSCH优先级确定的最大功率；PPSSCH，D(i)为基于下行功率控制确定的需求功率；PPSSCH，SL(i)为基于SL功率控制确定的需求功率。
对于PSSCH中的一个PRB，PSCCH/PSSCH需求功率满足以下关系。
在上述公式中，为PSSCH占用的PRB的个数。
在另一些示例中，预配置或通过网络设备配置一个PSSCH的一个PRB的需求功率PPSSCH，one；例如，可以预配置或通过网络设备配置PSSCH的绝对值功率，也可以配置PSSCH的相对值功率，例如将相对值功率配置为最大功率的Y倍。在一些实施例中，Y为小于1的有理数。示例性地，PSSCH的需求功率满足以下关系。
PPSSCH，one＝Pcmax+10log10(Y)。
在上述公式中，PPSSCH，one为PSSCH在一个PRB上的需求功率，Pcmax为UE最大发射功率，Y为常数。
在一些示例中，在一个数据传输时机occasion i上，一个PSSCH需求功率满足以下关系。
在上述公式中，PPSSCH(i)为PSCCH/PSSCH需求功率；PPSSCH，one为PSSCH的一个PRB的需求功率；为PSSCH占用的PRB的个数。
(3)直连同步信道的需求功率
在一些示例中，若使能了基于下行的同步信号功率控制，即下行功控参数dl-P0-PSBCH和被预配置或通过网络设备配置。则SL同步需求功率满足以下关系。
在上述公式中，PO，S-SSB由dl-P0-PSBCH指示，αS-SSB由dl-Alpha-PSBCH指示或者等于1，μ为当前使用的子载波间隔(SCS,subcarrier spacing)确定，PL为基于一个参考信号测量的路径损耗，为所述同步信号占用的PRB的个数。
对于PSBCH中的一个PRB，PSBCH需求功率满足以下关系。
在上述公式中，为同步信号占用的PRB的个数。
在一些实施例中，不同类型的直连通信信道可以具有不同的功率谱密度。也就是说，不同类型的直连通信信道在一个PRB上的发射功率是不同的。例如，PPSSCH，one、PS-SSB，one以及PPSSCH，one可以具有不同的值。
在另一些实施例中，不同类型的直连通信信道可以具有相同的功率谱密度。也就是说，不同类型的直连通信信道在一个PRB上的发射功率是相同的，均可以等于PSL，one。
在一些示例中，PSL，one等于按照上述实施例确定的PPSSCH，one、PSSB，one或者PPSSCH，one。
在另一些示例中，PSL，one可以为通过对PPSSCH，one、PS-SSB，one以及PPSSCH，one中的一个或多个进行预设处理后得到。上述预设处理可以为取最小数、取最大数、求平均等，对此不作限定。例如，PSL，one可以为PPSSCH，one和PPSSCH，one中的最大值或者最小值。又例如，PSL，one可以为PPSSCH，one和PPSSCH，one的平均值。
在一些实施例中，由于终端设备的发送能力是有限的，因此从N个第一直连通信信道中选择M个第二直连通信信道时需要考虑终端设备的发送能力。这样，选择出来的M个第二直连通信信道能够满足终端设备的发送能力的限制要求。换句话说，终端设备的发送能力支持发送M个第二直连通信信道。
终端设备的发送能力可以通过预配置或者网络配置来确定。在一些实施例中，终端设备的发送能力可以与终端设备的最大发射功率、发送天线数目等相关，对此不作限定。
在一些实施例中，M个第二直连通信信道为第三排列顺序中的前M个第一直连通信信道。其中，第三排列顺序是对N个第一直连通信信道进行排列而得到。
作为一种示例，第三排列顺序是基于各个第一直连通信信道的优先级，对N个第一直连通信信道进行排列而得到。其中，优先级高的第一直连通信信道在第三排列顺序中位于优先级低的第一直连通信信道之前。
作为另一种示例，第三排列顺序是基于各个第一直连通信信道的优先级和/或发送等级，对N个第一直连通信信道进行排列而得到。发送等级高的第一直连通信信道在第三排列顺序中位于发送等级低的第一直连通信信道之前。并且，对于具有相同发送等级的两个第一直连通信信道来说，优先级高的第一直连通信信道在第三排列顺序中位于优先级低的第一直连通信信道之前。
在一些实施例中，发送等级可以与直连通信信道的类型、通信制式、携带的内容等相关。基于此，示例性地，发送等级可以满足以下规则中的一项或者多项。
规则1-1、直连同步信道的发送等级高于直连数据信道的发送等级；
规则1-2、直连数据信道的发送等级高于直连反馈信道的发送等级；
规则1-3、用于携带混合自动重传应答信息的直连反馈信道的发送等级高于用于携带冲突指示的直连反馈信道的发送等级；
规则1-4、NR直连通信信道的接收等级高于或低于LTE直连通信信道的接收等级。
可以理解的是，发送等级所适用的规则，以及各个规则之间的优先顺序可以通过网络设备配置或者预配置来确定。
例如，假设发送等级满足规则1-1、规则1-2以及规则1-4(NR直连通信信道的发送等级高于LTE直连通信信道)，且规则1-4优先于规则1-1和规则1-2，则各种类型的直连通信信道按照发送等级从高到底的顺序依次为：NR直连同步信道、NR直连数据信道、直连反馈信道、LTE直连同步信道、LTE直连数据信道。
又例如，假设发送等级满足规则1-1、规则1-2以及规则1-4(NR直连通信信道的发送等级高于LTE直连通信信道)，且规则1-1和规则1-2优先于规则1-4，则各种类型的直连通信信道按照发送等级从高到底的顺序依次为：NR直连同步信道、LTE直连同步信道、NR直连数据信道、LTE直连数据信道、直连反馈信道。
又例如，假设发送等级满足规则1-1、规则1-2以及规则1-4(NR直连通信信道的发送等级低于LTE直连通信信道)，且规则1-4优先于规则1-1和规则1-2，则各种类型的直连通信信道按照发送等级从高到底的顺序依次为：LTE直连同步信道、LTE直连数据信道、NR直连同步信道、NR直连数据信道、直连反馈信道。
又例如，假设发送等级满足规则1-1、规则1-2以及规则1-4(NR直连通信信道的发送等级低于LTE直连通信信道)，且规则1-1和规则1-2优先于规则1-4，则各种类型的直连通信信道按照发送等级从高到底的顺序依次为：LTE直连同步信道、NR直连同步信道、LTE直连数据信道、NR直连数据信道、直连反馈信道。
在一些实施例中，在规则1-4中，NR直连通信信道的发送等级与LTE直连通信信道的发送等级之间的高低顺序可以基于网络配置或者预配置来确定。
或者，在规则1-4中，NR直连通信信道的发送等级与LTE直连通信信道的发送等级之间的高低顺序可以基于待发送的N个第一直连通信信道的实际情况来确定。例如，在待发送的N个第一直连通信信道包括待发送的至少一个NR直连通信信道和待发送的至少一个LTE直连通信信道的情况下，若第一优先级高于或等于第二优先级，待发送的NR直连通信信道的发送等级高于待发送的LTE直连通信信道的发送等级。或者，若第一优先级低于第二优先级，待发送的NR直连通信信道的发送等级低于待发送的LTE直连通信信道的发送等级。第一优先级为所有待发送的NR直连通信信道的优先级中的最高优先级，第二优先级为所有待发送的LTE直连通信信道的优先级中的最高优先级。
在一些实施例中，可以限制终端设备仅能同时发送一种类型的直连通信信道。也就是说，M个第二直连通信信道属于同一类型的直连通信信道。基于此，可以按预设的类型排序，从N个第一直连通信信道中选择出M个第二直连通信信道。示例性地，预设的类型排序依次为：NR直连数据信道、LTE直连数据信道、NR直连同步信道、LTE直连同步信道以及直连反馈信道。
S102、基于M个第二直连通信信道中各个第二直连通信信道的发射功率，发射M个第二直连通信信道。
在S102中，对于M个第二直连通信信道中的各个第二直连通信信道，以该第二直连通信信道的发射功率发射该第二直连通信信道。
本公开实施例提供的技术方案中，在进行直连通信时，对直连通信信道的发射功率进行功率控制，以确保实际发送的直连通信信道的功率和(例如上述M个第二直连通信信道的发射功率之和)小于终端设备的最大发射功率，进而提高通信质量，降低能量损耗。
以NR直连通信信道与LTE直连通信信道实现载波共存的场景为例，终端设备在一个时隙上可能需要同时接收多个直连通信信道(例如NR直连数据信道、LTE直连数据信道、直连反馈信道等)。但是，终端设备的接收能力是有限的，因此在待接收的多个直连通信信道超出终端设备的接收能力的情况下，终端设备如何接收直连通信信道，是亟待解决的技术问题。
为了解决该技术问题，本公开实施例还提供一种直连通信方法，如图5所示，该方法包括以下步骤。
S201、从待接收的P个第三直连通信信道中选择出K个第四直连通信信道。
终端设备的接收能力支持接收K个第四直连通信信道。P为正整数，K为小于或等于P的正整数。
在一些实施例中，P个第三直连通信信道包括以下一项或者多项。
一个或多个NR直连数据信道；
一个或多个LTE直连数据信道；
一个或多个直连反馈信道；
LTE直连同步信道；或者，
NR直连同步信道。
在一些实施例中，P个第三直连通信信道中的直连反馈信道可以是采用第二格式的直连反馈信道，也可以是采用第一格式的直连反馈信道，对此不作限定。
在本公开实施例中，上述P个第三直连通信信道在时域上是重叠的。可以理解的是，两个直连通信信道在时域上的重叠可以是部分重叠或者全部重叠。示例性地，两个直连通信信道在时域上部分重叠，可以是指两个直连通信信道占用的符号中的至少一个符号是重叠的。两个直连通信信道在时域上全部重叠，可以是指两个直连通信信道占用的符号全部重叠。
在一些实施例中，在终端设备的接收能力能够支持接收P个第三直连通信信道的情况下，则将P个第三直连通信信道均作为第四直连通信信道。在终端设备的接收能力不能够支持接收P个第三直连通信信道，则在不超终端设备的接收能力的前提下，从P个第三直连通信信道中选择部分直连通信信道作为第四直连通信信道。
终端设备的接收能力与终端设备的基带处理能力、天线配置等相关。终端设备的接收能力可以通过预配置或者网络设备配置来确定，对此不作限定。在本公开实施例中，终端的接收能力可以以同时接收的直连通信信道的最大数目来体现。
在一些实施例中，K个第四直连通信信道为第四排列顺序中的前K个第三直连通信信道。第四排列顺序为对P个第三直连通信信道进行排列而得到。
作为一种示例，第四排列顺序是基于各个第三直连通信信道的优先级，对P个第三直连通信信道进行排列而得到。优先级高的第三直连通信信道在第四排列顺序中位于优先级低的第三直连通信信道之前。
作为另一种示例，第四排列顺序是基于各个第三直连通信信道的接收等级和优先级，对P个第三直连通信信道进行排列而得到。接收等级高的第三直连通信信道在第四排列顺序中位于接收等级低的第三直连通信信道之前。并且，对于具有相同接收等级的两个第三直连通信信道，优先级高的第三直连通信信道在第四排列顺序中位于优先级低的第三直连通信信道之前。
在一些实施例中，接收等级可以与直连通信信道的类型、通信制式、携带的内容等相关。 基于此，示例性地，接收等级可以满足以下规则中的一项或者多项。
规则2-1、直连同步信道的接收等级高于直连数据信道的接收等级；
规则2-2、直连数据信道的接收等级高于直连反馈信道的接收等级；
规则2-3、用于携带混合自动重传应答信息的直连反馈信道的接收等级高于用于携带冲突指示的直连反馈信道的接收等级；
规则2-4、NR直连通信信道的接收等级高于或低于LTE直连通信信道的接收等级。
可以理解的是，接收等级所适用的规则，以及各个规则之间的优先顺序可以通过网络设备配置或者预配置来确定。
例如，假设接收等级满足规则2-1、规则2-2以及规则2-4(NR直连通信信道的接收等级高于LTE直连通信信道)，且规则2-4优先于规则2-1和规则2-2，则各种类型的直连通信信道按照接收等级从高到底的顺序依次为：NR直连同步信道、NR直连数据信道、直连反馈信道、LTE直连同步信道、LTE直连数据信道。
又例如，假设接收等级满足规则2-1、规则2-2以及规则2-4(NR直连通信信道的接收等级高于LTE直连通信信道)，且规则2-1和规则2-2优先于规则2-4，则各种类型的直连通信信道按照接收等级从高到底的顺序依次为：NR直连同步信道、LTE直连同步信道、NR直连数据信道、LTE直连数据信道、直连反馈信道。
又例如，假设接收等级满足规则2-1、规则2-2以及规则2-4(NR直连通信信道的接收等级低于LTE直连通信信道)，且规则2-4优先于规则2-1和规则2-2，则各种类型的直连通信信道按照接收等级从高到底的顺序依次为：LTE直连同步信道、LTE直连数据信道、NR直连同步信道、NR直连数据信道、直连反馈信道。
又例如，假设接收等级满足规则2-1、规则2-2以及规则2-4(NR直连通信信道的接收等级低于LTE直连通信信道)，且规则2-1和规则2-2优先于规则2-4，则各种类型的直连通信信道按照接收等级从高到底的顺序依次为：LTE直连同步信道、NR直连同步信道、LTE直连数据信道、NR直连数据信道、直连反馈信道。
在一些实施例中，在规则2-4中，NR直连通信信道的接收等级与LTE直连通信信道的接收等级之间的高低顺序可以基于网络配置或者预配置来确定。
或者，在规则2-4中，NR直连通信信道的接收等级与LTE直连通信信道的接收等级之间的高低顺序可以基于待接收的P个第三直连通信信道的实际情况来确定。例如，在待接收的P个第三直连通信信道包括待接收的至少一个NR直连通信信道和待接收的至少一个LTE直连通信信道的情况下，若第三优先级高于或等于第四优先级，待接收的NR直连通信信道的接收等级高于待接收的LTE直连通信信道的接收等级。或者，若第三优先级低于第四优先级，待接收的NR直连通信信道的接收等级低于待接收的LTE直连通信信道的接收等级；第三优先级为所有待接收的NR直连通信信道的优先级中的最高优先级，第四优先级为所有待接收的LTE直连通信信道的优先级中的最高优先级。
S202、接收K个第四直连通信信道。
本公开实施例提供的技术方案，在待接收的P个直连通信信道在时域上重叠情况下，通过考虑终端设备的接收能力，选择终端设备的接收能力能够支持的K个第四直连通信信道进行接收，以保证终端设备正常进行直连通信。
在NR直连通信信道与LTE直连通信信道实现载波共存的情况下，终端设备可能在同一时间需要执行接收NR直连通信信道的操作、发送NR直连通信信道的操作、接收LTE直连通信信道的操作和/或发送LTE直连通信信道的操作。但是，一些终端设备存在半双工的限制，也即这些终端设备不能同时执行接收操作和发送操作。因此，对于存在半双工限制的终端设备，需要考虑如何解决待接收的直连通信信道和待发送的直连通信信道在时域上冲突的问题。
为了解决该技术问题，本公开实施例还提供一种直连通信方法，如图6所示，该方法包括以下步骤。
S301、若待发送的N个第一直连通信信道和待接收的P个第三直连通信信道在时域上重叠，获取接收优先级和发送优先级。
接收优先级用于表征执行接收操作的优先级。发送优先级用于表征执行发送操作的优先级。
在一些实施例中，接收优先级为N个第一直连通信信道的优先级中的最高优先级。发送优先级为P个第三直连通信信道的优先级中的最高优先级。或者，发送优先级为P个第三直连通信信道中部分直连通信信道(例如目标类型的直连通信信道)的优先级中的最高优先级。在一些实施例中，目标类型可以包括直连反馈信道、LTE直连数据信道、NR直连同步信道或者LTE直连同步信道中的一项或者多项。需要说明的是，目标类型不包括NR直连数据信道的原因在于发送端一般不是周期性发送NR直连数据信道，因此接收端难以对NR直连数据信道的接收时机进行预测，因此也不方便在确定接收优先级的过程中考虑待接收的NR直连数据信道的优先级。
在又一些实施例中，待发送的N个第一直连通信信道和待接收的P个第三直连通信信道从通信制式上可以划分为：待传输的至少一个LTE直连通信信道和待传输的至少一个NR直连通信信道。基于此，在NR优先级高于或等于LTE优先级的情况下，接收优先级即为待传输的至少一个NR直连通信信道中各个待接收的NR直连通信信道的优先级中的最高优先级，发送优先级即为待传输的少一个NR直连通信信道中各个待发送的NR直连通信信道的优先级中的最高优先级。或者，在NR优先级低于LTE优先级的情况下，接收优先级即为待传输的至少一个LTE直连通信信道中各个待接收的LTE直连通信信道的优先级中的最高优先级，发送优先级即为待传输的少一个LTE直连通信信道中各个待发送的LTE直连通信信道的优先级中的最高优先级。NR优先级可以为待传输的至少一个NR直连通信信道的优先级中的最高优先级。LTE优先级可以为待传输的至少一个LTE直连通信信道的优先级中的最高优先级。
可以理解的是，上述对接收优先级和发送优先级的确定方式的介绍仅是示例性的，接收优先级和发送优先级还可以由其他确定方式，本公开实施例对此不作限定。
示例性地，直连通信信道的优先级可以为临近服务每包优先级(proSe per packet priority，PPPP)。直连通信信道的优先级可以采用优先级值来表征。优先级值与优先级之间是负相关关系，也即优先级值越小表示优先级越高。在一些实施例中，不同类型的直连通信信道的优先级可以通过以下方式来确定。
NR直连数据信道的优先级由其对应的侧行链路控制信息(sidelink control information，SCI)中的信息来指示；
LTE直连数据信道的优先级由其对应的SCI中的信息来指示；
NR同步信号的优先级通过预配置或者网络设备配置来确定；
LTE同步信号的优先级通过预配置或者网络设备配置来确定；
直连反馈信道的优先级由其对应的NR直连数据信道的优先级来确定。
在一些实施例中，对于待接收或待发送的一组直连反馈信道来说，该组直连反馈信道的组优先级可以等于该组中所有直连反馈信道的优先级中的最高优先级。
S302、基于接收优先级和发送优先级的比较结果，确定执行接收操作或者执行发送操作。
作为一种示例，在接收优先级高于发送优先级的情况下，确定执行接收操作。或者，在接收优先级低于发送优先级的情况下，确定执行发送操作。又或者，在接收优先级等于发送优先级的情况下，确定执行接收操作或者执行发送操作。
可以理解的是，在接收优先级等于发送优先级的情况下，详细执行接收操作，还是执行发送操作，可以根据预配置或者网络配置来确定。
在一些实施例中，在选择执行接收操作的情况下，可以提前或者推后发送N个第一直连通信信道的时间，以保证终端设备正常进行直连通信。
在一些实施例中，执行发送操作可以参考前述实施例中的S101至S102来实现。
在一些实施例中，执行接收操作可以参考前述实施例中的S201至S202来实现。
本公开实施例提供的技术方案，可以在终端设备存在半双工限制的情况下，合理地应对待发送的直连通信信道和待接收的直连通信信道在时域上冲突的问题，以保证对重要的直连通信信道的优先传输。
可以理解的是，若一个时域单元(例如时隙)上仅有待发送的直连通信信道，终端设备执行发送操作。或者，若一个时域单元上仅有待接收的直连通信信道，终端设备执行接收操作。
可以看出，上述主要从方法的角度对本公开实施例提供的方案进行了介绍。为了实现上述功能，本公开实施例提供了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的模块及算法步骤，本公开实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。
如图7所示，本公开实施例提供了一种直连通信装置，用于执行图4至图6所示的直连通信方法。该直连通信装置300包括：处理模块301以及发射模块302。
处理模块301，用于从待接收的N个第一直连通信信道中选择M个第二直连通信信道，以及确定M个第二直连通信信道中各个第二直连通信信道的发射功率，M个第二直连通信信道的发射功率之和小于或等于终端设备的最大发射功率，N为正整数，M为小于或等于N的正整数。
发射模块302，用于基于M个第二直连通信信道中各个第二直连通信信道的发射功率，发射M个第二直连通信信道。
在一些实施例中，若N个第一直连通信信道包括一个新空口NR直连数据信道和N1个直连反馈信道，M个第二直连通信信道包括NR直连数据信道和/或N2个直连反馈信道。N1等于N-1，N2小于或等于min(N1，Nmax)，Nmax为终端设备支持同时发送的直连反馈信道的最大数目。
在一些实施例中，M个第二直连通信信道中各个第二直连通信信道的发射功率等于其对 应的需求功率。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和小于或等于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据信道和N1个直连反馈信道。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据和第一排列顺序中的前N2个直连反馈信道，第一排列顺序为N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1小于或等于Nmax，且N1个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，第二排列顺序为N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1大于Nmax，且Nmax个直连反馈信道的需求功率和NR直连数据信道的需求功率之和小于或等于终端设备的最大发射功率的情况下，M个第二直连通信信道包括一个NR直连数据信道和Nmax个直连反馈信道。
在一些实施例中，在N1大于Nmax，且Nmax个直连反馈信道的需求功率和NR直连数据信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括NR直连数据信道和第一排列顺序中的前N2个直连反馈信道，第一排列顺序为N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，在N1大于Nmax，且一个NR直连数据信道的需求功率和Nmax个直连反馈信道的需求功率之和大于终端设备的最大发射功率的情况下，M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，第二排列顺序为N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
在一些实施例中，M个第二直连通信信道中各个第二直连通信信道采用相同的功率谱密度进行发送。
在一些实施例中，在M个第二直连通信信道包括NR直连数据信道和N2个直连反馈信道的情况下，N2个直连反馈信道中各个直连反馈信道的发射功率小于或等于终端设备的最大发射功率的X1倍，X1等于一个直连反馈信道的带宽与第一总带宽的比值，第一总带宽为N2个直连反馈信道的带宽与NR直连数据信道的带宽之和。
在一些实施例中，直连数据信道的发射功率小于或等于终端设备的最大发射功率的X2倍，X2等于直连数据信道的带宽与第一总带宽的比值。
在一些实施例中，终端设备的发送能力支持发送M个第二直连通信信道。
在一些实施例中，若终端设备的接收能力不支持接收N个第一直连通信信道。在不超过终端设备的接收能力的前提下，M个第二直连通信信道为第三排列顺序中的前M个第一直连通信信道，第三排列顺序由对N个第一直连通信信道进行排列而得到。
在一些实施例中，第三排列顺序基于各个第一直连通信信道的优先级，对N个第一直连 通信信道进行排列而得到。优先级高的第一直连通信信道在第三排列顺序中位于优先级低的第一直连通信信道之前。
在一些实施例中，第三排列顺序基于各个第一直连通信信道的优先级和发送等级，对N个第一直连通信信道进行排列而得到。发送等级高的第一直连通信信道在第三排列顺序中位于发送等级低的第一直连通信信道之前。并且，对于具有相同发送等级的两个第一直连通信信道，优先级高的第一直连通信信道在第三排列顺序中位于优先级低的第一直连通信信道之前。
在一些实施例中，发送等级满足以下规则中的一项或者多项：直连同步信道的发送等级高于直连数据信道的发送等级；直连数据信道的发送等级高于直连反馈信道的发送等级；NR直连通信信道的发送等级高于或低于LTE直连通信信道的发送等级；或者，用于携带混合自动重传应答信息的直连反馈信道的发送等级高于用于携带冲突指示的直连反馈信道的发送等级。
在一些实施例中，上述处理模块301，还用于在多个直连通信信道在时域上重叠的情况下，获取接收优先级和发送优先级。多个直连通信信道包括待发送的N个第一直连通信信道和待接收的P个第三直连通信信道，P为正整数。基于接收优先级和发送优先级的比较结果，确定执行接收操作或者执行发送操作。
在一些实施例中，上述处理模块301，用于若发送优先级高于接收优先级，确定执行发送操作；或者，若发送优先级低于接收优先级，确定执行接收操作；或者，若发送优先级等于接收优先级，确定执行发送操作或者接收操作。
在一些实施例中，发送优先级为N个第一直连通信信道的优先级中最高的优先级。
在一些实施例中，接收优先级为P个第三直连通信信道的优先级中最高的优先级；或者，接收优先级为P个第三直连通信信道中所有目标类型的第三直连通信信道的优先级中最高的优先级，目标类型包括LTE直连数据信道、LTE直连同步信道、NR直连同步信道或者直连反馈信道中的一项或者多项。
在一些实施例中，上述处理模块301，还用于在确定执行接收操作之后，从P个第三直连通信信道中选择K个第四直连通信信道，K为小于或等于P的正整数；接收K个第四直连通信信道。
在一些实施例中，若终端设备的接收能力不支持接收P个第三直连通信信道，在不超终端设备的接收能力的前提下，K个第四直连通信信道为第四排列顺序中的前K个直连通信信道，第四排列顺序为对P个第三直连通信信道进行排列而得到。
在一些实施例中，第四排列顺序基于各个第三直连通信信道的优先级，对P个第三直连通信信道进行排列而得到。优先级高的第三直连通信信道在第四排列顺序中位于优先级低的第三直连通信信道之前。
在一些实施例中，第四排列顺序基于各个第三直连通信信道的优先级和接收等级，对P个第三直连通信信道进行排列而得到。接收等级高的第三直连通信信道在第四排列顺序中位于接收等级低的第三直连通信信道之前；并且，对于具有相同接收等级的两个第三直连通信信道，优先级高的第三直连通信信道在第四排列顺序中位于优先级低的第三直连通信信道之 前。
在一些实施例中，发送等级满足以下规则中的一项或者多项：直连同步信道的接收等级高于直连数据信道的接收等级；直连数据信道的接收等级高于直连反馈信道的接收等级；NR直连通信信道的接收等级高于或低于LTE直连通信信道的接收等级；或者，用于携带混合自动重传应答信息的直连反馈信道的接收等级高于用于携带冲突指示的直连反馈信道的接收等级。
在一些实施例中，直连反馈信道的格式包括第一格式和/或第二格式。第一格式的直连反馈信道的时域资源占用一个时隙中部分用于直连通信的符号；第二格式的直连反馈信道的时域资源占用一个时隙中所有用于直连通信的符号。
在一些实施例中，若用于传输直连反馈信道的时隙与用于LTE直连通信的资源池所包含的时隙重叠，直连反馈信道在用于传输直连反馈信道的时隙上以第二格式进行传输。
在一些实施例中，直连反馈信道在用于NR直连通信的资源池所包含的时隙上以第二格式进行传输。
在一些实施例中，一个时隙上的第二格式的直连反馈信道的频域资源与同一时隙上的NR直连数据信道的频域资源位于不同的频域位置。
需要说明的是，图7中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。例如，还可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
在采用硬件的形式实现上述集成的模块的功能的情况下，本公开实施例提供了上述实施例中所涉及的直连通信装置的另一种可能的结构示意图。如图8所示，该直连通信装置400包括：处理器402，总线404。在一些实施例中，该直连通信装置还可以包括存储器401。在一些实施例中，该直连通信装置还可以包括通信接口403。
处理器402，可以是实现或执行结合本公开公开内容所描述的各种示例性的逻辑方框，模块和电路。该处理器402可以是中央处理器，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。处理器402可以实现或执行结合本公开公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器402也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等。
通信接口403，用于与其他设备通过通信网络连接。该通信网络可以是以太网，无线接入网，无线局域网(wireless local area networks，WLAN)等。
存储器401，可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。
作为一种示例，存储器401可以独立于处理器402存在，存储器401可以通过总线404与 处理器402相连接，用于存储指令或者程序代码。处理器402调用并执行存储器401中存储的指令或程序代码时，能够实现本公开实施例提供的直连通信方法。
作为另一种示例，存储器401也可以和处理器402集成在一起。
总线404，可以是扩展工业标准结构(extended industry standard architecture，EISA)总线等。总线404可以分为地址总线、数据总线、控制总线等。为便于表示，图8中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明。在实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将直连通信装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
本公开实施例还提供了一种计算机可读存储介质。上述方法实施例中的全部或者部分流程可以由计算机指令来指示相关的硬件完成，该程序可存储于上述计算机可读存储介质中，该程序在执行时，可包括如上述各方法实施例的流程。计算机可读存储介质可以是前述任一实施例的或内存。上述计算机可读存储介质也可以是上述基于直连通信装置的外部存储设备，例如上述直连通信装置上配备的插接式硬盘，智能存储卡(smart media card，SMC)，安全数字(secure digital，SD)卡，闪存卡(flash card)等。进一步地，上述计算机可读存储介质还可以既包括上述直连通信装置的内部存储单元也包括外部存储设备。上述计算机可读存储介质用于存储上述计算机程序以及上述直连通信装置所需的其他程序和数据。上述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。所述可读存储介质，包括非暂态计算机可读存储介质。
本公开实施例还提供一种计算机程序产品，该计算机产品包含计算机程序，当该计算机程序产品在计算机上运行时，使得该计算机执行上述实施例中所提供的任一项直连通信方法。
尽管在此结合各实施例对本公开进行了描述，然而，在实施所要求保护的本公开过程中，本领域技术人员通过查看附图、公开内容、以及所附权利要求书，可理解并实现公开实施例的其他变化。在权利要求中，“包括”(Comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
此外，尽管结合详细特征及其实施例对本公开进行了描述，显而易见的，在不脱离本公开的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本公开的示例性说明，且视为已覆盖本公开范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。
以上，仅为本公开的详细实施方式，但本公开的保护范围并不局限于此，任何在本公开揭露的技术范围内的变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应该以权利要求的保护范围为准。

Claims (28)

  1. 一种直连通信方法，包括：
    从待接收的N个第一直连通信信道中选择M个第二直连通信信道，以及确定所述M个第二直连通信信道中各个第二直连通信信道的发射功率，所述M个第二直连通信信道的发射功率之和小于或等于终端设备的最大发射功率，N为正整数，M为小于或等于N的正整数；
    基于所述M个第二直连通信信道中各个第二直连通信信道的发射功率，发射所述M个第二直连通信信道。
  2. 根据权利要求1所述的方法，其中，若所述N个第一直连通信信道包括一个新空口NR直连数据信道和N1个直连反馈信道，所述M个第二直连通信信道包括所述NR直连数据信道和/或N2个直连反馈信道；其中，N1等于N-1，N2小于或等于min(N1，Nmax)，Nmax为所述终端设备支持同时发送的直连反馈信道的最大数目。
  3. 根据权利要求2所述的方法，其中，所述M个第二直连通信信道中各个第二直连通信信道的发射功率等于其对应的需求功率。
  4. 根据权利要求3所述的方法，其中，
    在N1小于或等于Nmax，且所述N1个直连反馈信道的需求功率和所述NR直连数据信道的需求功率之和小于或等于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括所述NR直连数据信道和所述N1个直连反馈信道；或者，
    在N1小于或等于Nmax，且所述N1个直连反馈信道的需求功率和所述NR直连数据信道的需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括所述NR直连数据和第一排列顺序中的前N2个直连反馈信道，所述第一排列顺序为所述N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序；或者，
    在N1小于或等于Nmax，且所述N1个直连反馈信道的需求功率和所述NR直连数据信道的需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，所述第二排列顺序为所述N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序；或者，
    在N1大于Nmax，且Nmax个直连反馈信道的需求功率和所述NR直连数据信道的需求功率之和小于或等于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括一个所述NR直连数据信道和Nmax个直连反馈信道；或者，
    在N1大于Nmax，且Nmax个直连反馈信道的需求功率和所述NR直连数据信道的需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括所述NR直连数据信道和第一排列顺序中的前N2个直连反馈信道，所述第一排列顺序为所述N1个直连反馈信道按照优先级从高到低的顺序进行排列而得到的排列顺序；或者，
    在N1大于Nmax，且一个所述NR直连数据信道的需求功率和Nmax个直连反馈信道的需求功率之和大于所述终端设备的最大发射功率的情况下，所述M个第二直连通信信道包括第二排列顺序中的前M个第一直连通信信道，所述第二排列顺序为所述N个第一直连通信信道按照优先级从高到低的顺序进行排列而得到的排列顺序。
  5. 根据权利要求2所述的方法，其中，所述M个第二直连通信信道中各个第二直连 通信信道采用相同的功率谱密度进行发送。
  6. 根据权利要求5所述的方法，其中，在所述M个第二直连通信信道包括所述NR直连数据信道和N2个直连反馈信道的情况下，所述N2个直连反馈信道中各个直连反馈信道的发射功率小于或等于所述终端设备的最大发射功率的X1倍，X1等于一个所述直连反馈信道的带宽与第一总带宽的比值，所述第一总带宽为所述N2个直连反馈信道的带宽与所述NR直连数据信道的带宽之和。
  7. 根据权利要求6所述的方法，其中，所述直连数据信道的发射功率小于或等于所述终端设备的最大发射功率的X2倍，X2等于所述直连数据信道的带宽与第一总带宽的比值。
  8. 根据权利要求1至7任一项所述的方法，其中，所述终端设备的发送能力支持发送所述M个第二直连通信信道。
  9. 根据权利要求8所述的方法，其中，若所述终端设备的接收能力不支持接收所述N个第一直连通信信道，在不超过所述终端设备的接收能力的前提下，所述M个第二直连通信信道为第三排列顺序中的前M个第一直连通信信道，
    所述第三排列顺序由对所述N个第一直连通信信道进行排列而得到。
  10. 根据权利要求9所述的方法，其中，所述第三排列顺序基于各个第一直连通信信道的优先级，对所述N个第一直连通信信道进行排列而得到；其中，优先级高的第一直连通信信道在所述第三排列顺序中位于优先级低的第一直连通信信道之前。
  11. 根据权利要求9所述的方法，其中，所述第三排列顺序基于各个第一直连通信信道的优先级和发送等级，对所述N个第一直连通信信道进行排列而得到；其中，发送等级高的第一直连通信信道在所述第三排列顺序中位于发送等级低的第一直连通信信道之前；并且，对于具有相同发送等级的两个第一直连通信信道，优先级高的第一直连通信信道在所述第三排列顺序中位于优先级低的第一直连通信信道之前。
  12. 根据权利要求11所述的方法，其中，所述发送等级满足以下规则中的一项或者多项：
    直连同步信道的发送等级高于直连数据信道的发送等级；
    所述直连数据信道的发送等级高于直连反馈信道的发送等级；
    NR直连通信信道的发送等级高于或低于LTE直连通信信道的发送等级；或者，
    用于携带混合自动重传应答信息的直连反馈信道的发送等级高于用于携带冲突指示的直连反馈信道的发送等级。
  13. 根据权利要求1所述的方法，还包括：
    在多个直连通信信道在时域上重叠的情况下，获取接收优先级和发送优先级；其中，所述多个直连通信信道包括待发送的N个第一直连通信信道和待接收的P个第三直连通信信道，P为正整数；
    基于所述接收优先级和所述发送优先级的比较结果，确定执行接收操作或者执行发送操作。
  14. 根据权利要求13所述的方法，其中，所述基于所述接收优先级和所述发送优先级的比较结果，确定执行接收操作或者执行发送操作，包括：
    若所述发送优先级高于所述接收优先级，确定执行发送操作；或者，
    若所述发送优先级低于所述接收优先级，确定执行接收操作；或者，
    若所述发送优先级等于所述接收优先级，确定执行发送操作或者接收操作。
  15. 根据权利要求14所述的方法，其中，所述发送优先级为所述N个第一直连通信信道的优先级中最高的优先级。
  16. 根据权利要求14所述的方法，其中，所述接收优先级为所述P个第三直连通信信道的优先级中最高的优先级；或者，所述接收优先级为所述P个第三直连通信信道中所有目标类型的第三直连通信信道的优先级中最高的优先级，所述目标类型包括LTE直连数据信道、LTE直连同步信道、NR直连同步信道或者直连反馈信道中的一项或者多项。
  17. 根据权利要求13至16任一项所述的方法，其中，在所述确定执行接收操作之后，所述方法还包括：
    从所述P个第三直连通信信道中选择K个第四直连通信信道，K为小于或等于P的正整数；
    接收所述K个第四直连通信信道。
  18. 根据权利要求17所述的方法，其中，若所述终端设备的接收能力不支持接收所述P个第三直连通信信道，在不超所述终端设备的接收能力的前提下，所述K个第四直连通信信道为第四排列顺序中的前K个直连通信信道，所述第四排列顺序为对所述P个第三直连通信信道进行排列而得到。
  19. 根据权利要求18所述的方法，其中，所述第四排列顺序基于各个第三直连通信信道的优先级，对所述P个第三直连通信信道进行排列而得到；其中，优先级高的第三直连通信信道在所述第四排列顺序中位于优先级低的第三直连通信信道之前。
  20. 根据权利要求18所述的方法，其中，所述第四排列顺序基于各个第三直连通信信道的优先级和接收等级，对所述P个第三直连通信信道进行排列而得到；其中，接收等级高的第三直连通信信道在所述第四排列顺序中位于接收等级低的第三直连通信信道之前；并且，对于具有相同接收等级的两个第三直连通信信道，优先级高的第三直连通信信道在所述第四排列顺序中位于优先级低的第三直连通信信道之前。
  21. 根据权利要求20所述的方法，其中，所述发送等级满足以下规则中的一项或者多项：
    直连同步信道的接收等级高于直连数据信道的接收等级；
    所述直连数据信道的接收等级高于直连反馈信道的接收等级；
    NR直连通信信道的接收等级高于或低于LTE直连通信信道的接收等级；或者，
    用于携带混合自动重传应答信息的直连反馈信道的接收等级高于用于携带冲突指示的直连反馈信道的接收等级。
  22. 根据权利要求2所述的方法，其中，所述直连反馈信道的格式包括第一格式和/或第二格式；其中，所述第一格式的直连反馈信道的时域资源占用一个时隙中部分用于直连通信的符号；所述第二格式的直连反馈信道的时域资源占用一个时隙中所有用于直连通信的符号。
  23. 根据权利要求22所述的方法，其中，若用于传输所述直连反馈信道的时隙与用于LTE直连通信的资源池所包含的时隙重叠，所述直连反馈信道在所述用于传输所述直连反馈信道的时隙上以第二格式进行传输。
  24. 根据权利要求22所述的方法，其中，所述直连反馈信道在用于NR直连通信的资 源池所包含的时隙上以第二格式进行传输。
  25. 根据权利要求22至24任一项所述的方法，其中，一个时隙上的所述第二格式的直连反馈信道的频域资源与同一时隙上的所述NR直连数据信道的频域资源位于不同的频域位置。
  26. 一种直连通信装置，包括：
    处理模块，用于从待接收的N个第一直连通信信道中选择M个第二直连通信信道，以及确定所述M个第二直连通信信道中各个第二直连通信信道的发射功率，所述M个第二直连通信信道的发射功率之和小于或等于终端设备的最大发射功率，N为正整数，M为小于或等于N的正整数；
    发射模块，用于基于所述M个第二直连通信信道中各个第二直连通信信道的发射功率，发射所述M个第二直连通信信道。
  27. 一种终端设备，包括存储器、处理器以及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求1-25中任一项所述的直连通信方法。
  28. 一种计算机可读存储介质，其中，所述计算机可读存储介质包括计算机指令；
    其中，当所述计算机指令在终端设备上运行时，使得所述终端设备执行如权利要求1至25任一项所述的直连通信方法。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111294940A (zh) * 2019-03-08 2020-06-16 展讯通信（上海）有限公司 发射功率的分配方法及装置、存储介质、终端
CN111385763A (zh) * 2018-12-29 2020-07-07 华为技术有限公司 一种信号发送、配置优先级的方法及设备
CN111511025A (zh) * 2019-01-31 2020-08-07 华为技术有限公司 功率控制方法及终端设备
CN112653541A (zh) * 2019-10-12 2021-04-13 华为技术有限公司 通信方法及装置
US20220248425A1 (en) * 2019-04-28 2022-08-04 Lg Electronics Inc. Method and device for performing harq feedback in nr v2x

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111385763A (zh) * 2018-12-29 2020-07-07 华为技术有限公司 一种信号发送、配置优先级的方法及设备
CN111511025A (zh) * 2019-01-31 2020-08-07 华为技术有限公司 功率控制方法及终端设备
CN111294940A (zh) * 2019-03-08 2020-06-16 展讯通信（上海）有限公司 发射功率的分配方法及装置、存储介质、终端
US20220248425A1 (en) * 2019-04-28 2022-08-04 Lg Electronics Inc. Method and device for performing harq feedback in nr v2x
CN112653541A (zh) * 2019-10-12 2021-04-13 华为技术有限公司 通信方法及装置

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