WO2020024868A1 - 旁链路信息传输方法及终端 - Google Patents

旁链路信息传输方法及终端 Download PDF

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Publication number
WO2020024868A1
WO2020024868A1 PCT/CN2019/097697 CN2019097697W WO2020024868A1 WO 2020024868 A1 WO2020024868 A1 WO 2020024868A1 CN 2019097697 W CN2019097697 W CN 2019097697W WO 2020024868 A1 WO2020024868 A1 WO 2020024868A1
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identifier
sci
terminal
link
pssch
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PCT/CN2019/097697
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English (en)
French (fr)
Inventor
纪子超
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维沃移动通信有限公司
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to SG11202100841VA priority Critical patent/SG11202100841VA/en
Priority to KR1020217006490A priority patent/KR20210035896A/ko
Priority to JP2021505899A priority patent/JP7326425B2/ja
Priority to EP19843763.4A priority patent/EP3832935A4/en
Publication of WO2020024868A1 publication Critical patent/WO2020024868A1/zh
Priority to US17/165,865 priority patent/US20210160778A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • 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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • 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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0241—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where no transmission is received, e.g. out of range of the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a method and terminal for transmitting side link information.
  • sidelinks In a Long Term Evolution (LTE) mobile communication system, sidelinks, or secondary links, side links, and side links, are used to directly communicate between terminals without using network equipment. transmission. Among them, the terminal sends side link control information (SCI) through the physical side link control channel (PSCCH), and schedules the transmission of the physical side link shared channel (PSSCH) to send data. Among them, the transmission of the side link is based on broadcasting, and the terminal does not establish a point-to-point connection at the physical layer.
  • SCI side link control information
  • PSCCH physical side link control channel
  • PSSCH physical side link shared channel
  • the terminal can only demodulate all received The data is then distinguished by the higher layers and processed in response, for example, through the layer 2 identity (L2ID) of the medium access control (MAC) layer, it is determined and discarded that the unicast data is not sent to itself. In this way, demodulating all the received data and then discarding data that does not belong to it increases the processing energy consumption of the terminal and wastes the processing capacity of the terminal.
  • L2ID layer 2 identity
  • MAC medium access control
  • the embodiments of the present disclosure provide a side-link information transmission method and a terminal, so as to solve the problem of high processing energy consumption of the terminal during the side-link transmission process.
  • an embodiment of the present disclosure provides a side link information transmission method, which is applied to a first terminal side and includes:
  • an embodiment of the present disclosure further provides a terminal, where the terminal is a first terminal, and includes:
  • a receiving module for receiving side link control information SCI
  • the first processing module is configured to determine whether to receive or demodulate a physical side link shared channel PSSCH according to a side link transmission identifier indicated by the SCI.
  • an embodiment of the present disclosure provides a side link information transmission method, which is applied to a second terminal side and includes:
  • Send side link control information SCI where SCI is used to indicate the side link transmission identification.
  • an embodiment of the present disclosure provides a terminal, where the terminal is a second terminal, and includes:
  • the sending module is configured to send side link control information SCI, where the SCI is used to indicate a side link transmission identifier.
  • an embodiment of the present disclosure provides a terminal.
  • the terminal includes a processor, a memory, and a computer program stored on the memory and running on the processor.
  • the computer program is executed by the processor, the first terminal or the first terminal is implemented. Steps of the method for transmitting side-link information on the second terminal side.
  • an embodiment of the present disclosure further provides a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the foregoing first terminal side or the second terminal side Steps of the link information transmission method.
  • the receiving terminal can determine whether to receive or demodulate the PSSCH corresponding to the SCI according to the side-link transmission identifier, without receiving or demodulating the PSSCH each time, which can reduce the processing of the terminal Energy consumption, saving processing power.
  • FIG. 1 is a schematic flowchart of a side link information transmission method of a first terminal according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a module of a first terminal according to an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart of a method for transmitting side-link information of a second terminal according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a module of a second terminal according to an embodiment of the present disclosure.
  • FIG. 5 shows a block diagram of a terminal according to an embodiment of the present disclosure.
  • An embodiment of the present disclosure provides a side-link information transmission method, which is applied to a first terminal side. As shown in FIG. 1, the method includes the following steps:
  • Step 11 Receive side link control information SCI.
  • the SCI is sent by the second terminal.
  • the first terminal is used as the receiving terminal and the second terminal is used as the transmitting terminal.
  • the SCI is used to indicate a side-link transmission identifier, or a transmission identifier ID.
  • Step 12 Determine whether to receive or demodulate the physical side link shared channel PSSCH according to the side link transmission identifier indicated by the SCI.
  • the side-link transmission identifier is configured at a high level, configured by a network device, or predefined (such as a protocol agreement or a pre-configuration).
  • the side link transmission identifier can be used to indicate the identity information of the sending terminal or the receiving terminal.
  • the identity information of the first terminal matches the identity information of the sending terminal, the first terminal determines that the PSSCH corresponding to the SCI carries the information sent to itself. At this time, the PSSCH corresponding to the SCI needs to be received or demodulated; if it does not match, the PSSCH is ignored to save energy.
  • the first terminal determines that it needs to receive or demodulate the PSSCH corresponding to the SCI; if it does not belong, the PSSCH is ignored.
  • the side-link transmission identifier can also be used to indicate the type of data transmitted in the PSSCH corresponding to the SCI, such as broadcast, unicast, or multicast. If it is broadcast data, the first terminal determines that it needs to receive or demodulate the PSSCH corresponding to the SCI.
  • the first terminal determines that it needs to receive or demodulate the PSSCH corresponding to the SCI, otherwise it will no longer receive or demodulate the PSSCH to save processing Energy consumption.
  • the side-link transmission identifier includes at least one of a sender identifier, a receiver identifier, a broadcast identifier, a multicast identifier, and a unicast identifier.
  • the identifier of the sending end may be the identifier of the transmitting terminal; the identifier of the receiving end may be the identifier of the receiving terminal; the broadcast identifier is used to indicate that the data carried in the PSSCH is broadcast data; the multicast identifier is used to indicate that the data carried by the PSSCH is multicast data And / or the terminal identification of the receiving group of the PSSCH-bearing data; the unicast identification is used to indicate that the data carried by the PSSCH is the receiving-side terminal identification of the unicast data and / or the PSSCH carrying data.
  • the side-link transmission identifier in the embodiment of the present disclosure is determined according to at least a part of at least one of a layer two identifier (L2ID), an application layer identifier, a high-layer identifier (or called an upper-layer identifier), and an address identifier.
  • L2ID layer two identifier
  • the side-link transmission identifier is a 24-bit L2ID, which indicates the receiver identifier and the sender identifier, respectively.
  • step 12 includes one of the following:
  • the SCI indicates the identifier of the sender.
  • the first terminal receives or demodulates the PSSCH corresponding to the SCI.
  • the target sender identifier is used to indicate the identity of the terminal concerned by the first terminal. Further, when the sender identifier indicated by the SCI does not belong to the target sender identifier, whether to receive or demodulate the PSSCH may be determined according to other information indicated by the SCI.
  • the PSSCH is received or demodulated.
  • the SCI indicates the identification of the receiving end.
  • the first terminal receives or demodulates the PSSCH corresponding to the SCI.
  • the target receiving end identifier is used to indicate the identity of the receiving terminal desired by the second terminal. Further, when the identification of the receiving end indicated by the SCI does not belong to the identification of the target receiving end, whether to receive or demodulate the PSSCH may be determined according to other information indicated by the SCI.
  • the SCI indicates the broadcast identity
  • receive or demodulate the PSSCH In this scenario, the SCI indicates the broadcast identity.
  • the first terminal needs to receive or demodulate the PSSCH corresponding to the SCI.
  • the SCI does not indicate a broadcast identifier, it may be determined whether to receive or demodulate the PSSCH according to other information indicated by the SCI.
  • the SCI indicates the multicast identifier.
  • the first terminal receives or demodulates the PSSCH corresponding to the SCI.
  • the target multicast identifier is used to indicate the identity of the sending terminal concerned by the first terminal and / or the identity of the receiving terminal expected by the second terminal. Further, when the multicast identifier indicated by the SCI does not belong to the target multicast identifier, whether to receive or demodulate the PSSCH may be determined according to other information indicated by the SCI.
  • the unicast identifier indicated by the SCI is the target unicast identifier
  • receive or demodulate the PSSCH the SCI indicates a unicast identifier.
  • the first terminal receives or demodulates the PSSCH corresponding to the SCI.
  • the target unicast identifier is used to indicate the identity of the sending terminal concerned by the first terminal and / or the identity of the receiving terminal expected by the second terminal. Further, when the unicast identifier indicated by the SCI does not belong to the target unicast identifier, it may be determined whether to receive or demodulate the PSSCH according to other information indicated by the SCI.
  • the above-mentioned side-link transmission identifier may be explicitly indicated by SCI or implicitly indicated by SCI.
  • the embodiments of the present disclosure will further describe the specific form of the side link transmission identifier in these two aspects.
  • Method 1 The side-link transmission identifier is carried in the indication field of the SCI.
  • this mode is an explicit indication mode.
  • the indication field includes one of the following: a first indication field formed by at least a part of bits of a side-link transmission identifier; and a second indication field of a preset number of bits constructed according to a preset rule.
  • the first indication field refers to some or all of the bits in the SCI that carry side-link transmission identifiers (such as the sender identifier, receiver identifier, broadcast identifier, multicast identifier, and unicast identifier, etc.). Indicating domain.
  • the second indication field is determined according to the side link transmission identifier. That is to say, the second indication field is a fixed bit length indication field according to at least one of a sender identifier, a receiver identifier, a broadcast identifier, a multicast identifier, and a unicast identifier.
  • the second indication field is part or all of bits of at least one of a sender identifier, a receiver identifier, a broadcast identifier, a multicast identifier, and a unicast identifier (such as a multicast receiving group ID and / or a unicast identifier).
  • the second indication field is an indication field that takes a side-link transmission identifier as an input and constructs a fixed bit length according to a preset rule, such as taking the side-link transmission identifier as an input, and Binary and / or hash functions construct a fixed bit length indicator field.
  • the second indication domain may also be determined according to the mapping information of the side link transmission identifier.
  • the terminal is configured with a mapping relationship table, and an item in the mapping relationship table is used to indicate a side-link transmission identifier, and a second indication field is determined according to a configuration item in the mapping relationship table. The items in this mapping relationship table.
  • the method further includes: determining whether to receive or demodulate the PSSCH through a mask matching the second indication field.
  • the mask here may be predefined, configured by a network device, sent by a second terminal, or generated by the first terminal autonomously.
  • the first terminal matches the second indication field through a mask to determine whether to receive or demodulate the PSSCH. If the matching is successful, it determines that the PSSCH needs to be received or demodulated. If the matching fails, the PSSCH corresponding to the SCI is no longer received or demodulated. Further, if only some bits in the side-link transmission identifier constitute a mask, the ID of the MAC layer needs to be matched to determine whether to receive or demodulate the PSSCH.
  • the indication fields may be independently encoded or jointly encoded.
  • the scenario of independent coding of the indication domain is described above, and the scenario of joint coding of the indicator domain is further described in this embodiment below.
  • the indication field can also be used to indicate: response information (such as ACK / NACK), Hybrid Automatic Repeat Request (HARQ) process number, resource allocation and modulation and coding strategy At least one of the MCS. That is, at least one of the side-link transmission identification and response information, the HARQ process number, the resource allocation, and the modulation and coding strategy MCS is jointly coded.
  • response information such as ACK / NACK
  • HARQ Hybrid Automatic Repeat Request
  • the side link transmission identifier is a redundant cyclic check (Cyclic Redundancy Check, CRC) that scrambles the SCI.
  • CRC Cyclic Redundancy Check
  • This method is also an explicit indication method, which is different from the independent indication field method of the first method.
  • This method is a scrambling method.
  • the first indication domain or the second indication domain can be used as the CRC for scrambling the SCI.
  • Method 3 The side-link transmission identifier corresponds to the target information indicated by the SCI.
  • the side link transmission identifier is indicated by the target information indicated by the SCI.
  • the target information includes at least one of resource allocation information, beam transmission mode information, and demodulation reference signal (De-Modulation Reference Signal, DRMS) information.
  • resource (pool) allocation and / or beam transmission modes are related to unicast, multicast, or broadcast.
  • the resource allocation information includes information on at least one of a time domain, a frequency domain, a space domain (beam), and a resource pool of a resource where the SCI is located. In this way, it is determined whether the data in the PSSCH is unicast, multicast, or broadcast according to the time domain, frequency domain, space domain (beam), and the resource pool to which the detected SCI is located.
  • the above-mentioned beam transmission mode includes at least one of single beam transmission, multi-beam transmission, and beam scanning.
  • the method further includes: in the case of determining not to receive or demodulate the PSSCH, performing resource sensing and / or resource reservation according to the resources scheduled or reserved by the SCI.
  • the method further includes: in a case of determining to receive or demodulate the PSSCH, feedback response information according to a processing result of the PSSCH.
  • the physical layer feeds back an ACK when the PSSCH is received and the PSSCH is successfully demodulated, and a NACK is fed back when the PSSCH is not received or the PSSCH is not successfully demodulated.
  • the first terminal feeds back the response information according to the actual processing situation of the PSSCH, and feeds back an ACK when the PSSCH is successfully received and demodulated to indicate that the sending terminal does not need to perform unnecessary retransmission, which can save system resources.
  • NACK is fed back to instruct the sending terminal to retransmit in time to reduce the processing delay.
  • the side-link transmission identifier includes a sender identifier and a receiver identifier, and the sender identifier and the receiver identifier are 24-bit L2IDs, respectively indicating the terminal on the transmitting side and the terminal on the receiving side.
  • the SCI received by the first terminal includes an indication field of the receiving end identifier, and the CRC of the SCI is not scrambled.
  • the first terminal acquires at least one target receiving end identifier, where the target receiving end identifier may be predefined or configured at a high level, and the target receiving end identifier may be multicast or unicast expected by the transmitting terminal (such as the second terminal). Receiver ID.
  • the first terminal If the receiving end identifier carried in the SCI received by the first terminal matches the target receiving end identifier of the first terminal, the first terminal continues to receive and demodulate the PSSCH scheduled by the SCI.
  • the first terminal reports the identifier of the receiving end to an upper layer (for example, a MAC layer and an application layer).
  • an upper layer for example, a MAC layer and an application layer.
  • the physical layer of the first terminal encodes the feedback response information.
  • the first terminal does not receive or demodulate the PSSCH scheduled by the SCI; further, if the first terminal is configured with an autonomous resource selection mode, the first terminal may Resource allocation or reservation instructions for subsequent resource awareness and reservation.
  • This example prevents the first terminal from receiving and demodulating the PSSCH that it does not care about, thereby reducing unnecessary demodulation processing and reducing energy consumption.
  • the response information can be fed back when demodulating the PSSCH data, thereby avoiding unnecessary retransmissions and improving system resource utilization; it can also instruct the sender to retransmit data that failed in a timely manner, reducing processing delay.
  • the identifier of the sender and the identifier of the receiver in the side-link transmission identifier are 24-bit L2IDs, which respectively indicate the terminal on the transmitting side and the terminal on the receiving side.
  • the CRC of the SCI received by the first terminal uses an indication field of the transmission mode (unicast, multicast, or broadcast) (an indication field for indicating a unicast identifier, a multicast identifier, or a broadcast identifier in a side-link transmission identifier. ) For scrambling.
  • the SCI includes the actual receiving-end identification indication field, and if it is a broadcast, the SCI may not include the receiving-end identification indication field or escape the indication field for other purposes.
  • the first terminal obtains at least one target receiver identification, where the target receiver identification may be predefined or configured at a high level, and the target receiver identification may be a multicast or unicast receiver identification desired by the transmitting terminal.
  • the first terminal monitors the PSCCH and monitors or blindly detects the SCI according to the indication domain of the transmission mode. If the first terminal passes the CRC check of a certain SCI, the first terminal knows the transmission mode of the PSSCH scheduled by the SCI. If the PSSCH is multicast or unicast, the indication field used in the SCI to indicate the identity of the receiving end is further read. If the identification of the receiving end indicated in the SCI matches the identification of the target receiving end, the first terminal continues to receive and demodulate the PSSCH scheduled by the SCI. The first terminal reports the identifier of the receiving end to an upper layer (for example, a MAC layer and an application layer).
  • an upper layer for example, a MAC layer and an application layer.
  • the physical layer of the first terminal encodes the feedback response information. If the identification of the receiving end does not match the identification of the target receiving end, the first terminal does not receive or demodulate the PSSCH scheduled by the SCI; further, if the first terminal is configured with an autonomous resource selection mode, the first terminal may Resource allocation or reservation instructions for subsequent resource awareness and reservation.
  • the identifier of the sender and the identifier of the receiver in the side-link transmission identifier are 24-bit L2IDs, which respectively indicate the terminal on the transmitting side and the terminal on the receiving side.
  • the CRC of the SCI received by the first terminal is scrambled by using the indication field of the receiver identification.
  • the first terminal acquires at least one target receiving end identifier, where the target receiving end identifier may be predefined or configured at a high level, and the target receiving end identifier may be a multicast or unicast receiving end identifier desired by the transmitting terminal.
  • the first terminal monitors the PSCCH and monitors or blindly detects the SCI according to the indication domain of the transmission mode. If the SCI scrambled receiver ID matches the target receiver ID, the CRC check of the SCI passes, then the first terminal knows the transmission type and receiver ID of the PSSCH scheduled by the SCI, and the first terminal continues to receive And demodulate the PSSCH scheduled by the SCI.
  • the first terminal reports the identifier of the receiving end to an upper layer (for example, a MAC layer and an application layer). For data requiring feedback response information, the physical layer of the first terminal encodes the feedback response information.
  • the identifier of the sender and the identifier of the receiver in the side-link transmission identifier are 24-bit L2IDs, which respectively indicate the terminal on the transmitting side and the terminal on the receiving side.
  • the CRC of the SCI received by the first terminal is scrambled by using the indication field of the receiving end identifier or the transmitting end identifier. For example, for broadcast or multicast data, the receiving end identifier is used to scramble the CRC, and for unicast data, the transmitting end identifier is used to scramble the CRC.
  • the first terminal obtains at least one target receiver identification, where the target receiver identification may be predefined or configured at a high level, and the target receiver identification may be a multicast or unicast receiver identification desired by the transmitting terminal.
  • the first terminal obtains at least one target sender identifier, where the target sender identifier may be predefined or configured at a high level, and the target sender identifier may be a multicast or unicast sender identifier that the first terminal cares about.
  • the first terminal monitors the PSCCH and monitors or blindly detects the SCI based on the configured sender ID and target sender ID.
  • the CRC check of the SCI passes, so that the first terminal knows the PSSCH transmission type (broadcast or multicast) scheduled by the SCI and the receiver ID. .
  • the CRC check of the SCI passes, so that the first terminal knows the transmission type (unicast) of the PSSCH scheduled by the SCI and the identity of the sender.
  • the first terminal continues to receive and demodulate the PSSCH scheduled by the SCI.
  • the first terminal reports the identifier of the receiving end to an upper layer (for example, a MAC layer and an application layer).
  • an upper layer for example, a MAC layer and an application layer.
  • the physical layer of the first terminal encodes the feedback response information.
  • the first terminal may further detect a false alarm according to the identifier of the sending end and / or the identifier of the receiving end of the MAC layer in the PSSCH. If the PSSCH is not expected to be received by the first terminal, the data packet is dropped.
  • the first terminal may perform subsequent operations according to the resource allocation or reservation indication of the SCI. Resource awareness and reservation.
  • the identifier of the sender and the identifier of the receiver in the side-link transmission identifier are 24-bit L2IDs, which respectively indicate the terminal on the transmitting side and the terminal on the receiving side.
  • the MAC includes the identifier of the sender and the identifier of the receiver.
  • the SCI includes a second indicator field of a fixed bit length (a preset number of bits, such as 8 bits). The second indicator field is identified by the identifier of the sender and / or the identifier of the receiver. Partial or full bit construction.
  • the first terminal also obtains at least one target receiver identification, where the target receiver identification may be predefined or configured at a high level, and the target receiver identification may be a multicast or unicast receiver expected by the sending terminal. logo.
  • the first terminal may construct a mask having the same length as the second indication field, and the mask is constructed by some or all bits of the identifier of the transmitting end and / or the identifier of the receiving end.
  • the mask consists of intercepting 8 bits in the identifier of the transmitting end and / or the identifier of the receiving end, or 8 bits obtained by hashing the identifier of the transmitting end and / or the identifier of the receiving end. If there are multiple identifiers, a second indicator field or mask can be further constructed through binary calculation.
  • the first terminal monitors the PSCCH and monitors or blindly detects the SCI according to the indication domain of the transmission mode.
  • the first terminal performs a masking operation on the second indication field in the SCI according to the constructed mask. If the results match, it indicates that the PSSCH scheduled by the SCI may be a PSSCH that the first terminal is interested in, and the first terminal continues to receive and demodulate the PSSCH. PSSCH scheduled by SCI. If the results do not match, the SCH scheduled PSSCH is not received or demodulated.
  • the first terminal may further detect the false alarm according to the identifier of the sending end and / or the identifier of the receiving end of the MAC layer in the PSSCH. If the PSSCH is not expected to be received by the first terminal, the data packet is dropped. For example, when the second indication field or mask is formed based on a bit structure of the sender's identity and / or the receiver's identity, or the length of the second indication field or mask is shorter than the length of the sender's identity and / or the receiver's identity, A false alarm occurred.
  • the first terminal may perform subsequent resource awareness and reservation according to the resource allocation or reservation indication of the SCI.
  • the SCI includes a second indication field of a fixed bit length (a preset number of bits, such as 8 bits), wherein the content of the second indication field is determined by a predefined or configured mapping information. For example, if the terminal is configured with a mapping relationship table, items in the mapping relationship table are used to indicate a side link transmission identifier, and a bit value in the second indication field is used to indicate items in the mapping relationship table.
  • the first terminal monitors the PSCCH and monitors or blindly detects the SCI according to the indication domain of the transmission mode.
  • the first terminal matches a certain configuration item in the mapping relationship table according to the second indication domain.
  • the first terminal determines a side-link transmission identifier (such as the identifier of the sending end and / or the identifier of the receiving end) by looking up the table.
  • the determined side link transmission identifier determines whether to continue to receive and demodulate the SCH scheduled PSSCH.
  • the first terminal when the first terminal continues to receive and demodulate the PSSCH scheduled by the SCI, the first terminal reports the identifier of the receiving end to an upper layer (such as a MAC layer and an application layer). For data requiring feedback response information, the physical layer of the first terminal encodes the feedback response information.
  • an upper layer such as a MAC layer and an application layer.
  • the first terminal may perform subsequent resource awareness and reservation according to the resource allocation or reservation indication of the SCI.
  • the terminal on the receiving side may determine whether to receive or demodulate the PSSCH corresponding to the SCI according to the side-link transmission identifier without receiving or demodulating the PSSCH each time, which can reduce the terminal ’s Processing energy consumption, saving processing power.
  • the terminal 200 in the embodiment of the present disclosure can implement receiving the SCI of the side link control in the foregoing embodiment; and determine whether to receive or demodulate the physical side link shared channel according to the side link transmission identifier indicated by the SCI Details of the PSSCH method and achieve the same effect, the terminal 200 specifically includes the following functional modules:
  • the receiving module 210 is configured to receive side link control information SCI;
  • the first processing module 220 is configured to determine whether to receive or demodulate a physical side link shared channel PSSCH according to a side link transmission identifier indicated by the SCI.
  • the side-link transmission identifier is determined according to at least part of bits of at least one of a layer two identifier, an application layer identifier, and an address identifier.
  • the side-link transmission identifier is configured by a high layer, configured by a network device, or predefined.
  • the side-link transmission identifier corresponds to the target information indicated by the SCI.
  • the target information includes at least one of resource allocation information, beam transmission mode information, and demodulation reference signal DRMS information.
  • the beam transmission mode includes at least one of single beam transmission, multi-beam transmission, and beam scanning.
  • the side-link transmission identifier includes at least one of a sender identifier, a receiver identifier, a broadcast identifier, a multicast identifier, and a unicast identifier.
  • the first processing module 220 includes one of the following:
  • a first processing sub-module configured to receive or demodulate a PSSCH when a sender identifier indicated by the SCI is a target sender identifier
  • a second processing sub-module configured to receive or demodulate the PSSCH when the receiving end indicated by the SCI indicates the identity of the target receiving end;
  • a third processing submodule configured to receive or demodulate the PSSCH when the SCI indicates a broadcast identifier
  • a fourth processing submodule configured to receive or demodulate the PSSCH when the multicast identifier indicated by the SCI is the target multicast identifier
  • the fifth processing submodule is configured to receive or demodulate the PSSCH when the unicast identifier indicated by the SCI is the target unicast identifier.
  • the side-link transmission identifier is carried in an indication field of the SCI, or the side-link transmission identifier is a redundant cyclic check CRC that scrambles the SCI.
  • the indication field includes one of the following:
  • a first indication field formed by at least part of bits of a side link transmission identifier
  • a second indication field of a preset number of bits constructed according to a preset rule is a second indication field of a preset number of bits constructed according to a preset rule.
  • the second indication field is determined according to the side link transmission identifier, or the second indication field is determined according to the mapping information of the side link transmission identifier.
  • the terminal 200 further includes:
  • a determining module configured to determine whether to receive or demodulate a PSSCH by matching a second indication field with a mask
  • the indication field is further used to indicate at least one of response information, a hybrid automatic repeat request HARQ process number, resource allocation, and a modulation and coding strategy MCS.
  • the terminal 200 further includes:
  • a second processing module configured to perform resource awareness and / or resource reservation according to the resources scheduled or reserved by the SCI when it is determined not to receive or demodulate the PSSCH;
  • the third processing module is configured to feedback response information according to the processing result of the PSSCH when it is determined to receive or demodulate the PSSCH.
  • the terminal according to the embodiment of the present disclosure can determine whether it is necessary to receive or demodulate the PSSCH corresponding to the SCI according to the side-link transmission identifier without receiving or demodulating the PSSCH each time, which can reduce the processing energy consumption of the terminal and save Processing power.
  • the side link information transmission method is applied to a second terminal.
  • the method includes the following steps:
  • Step 31 Send side link control information SCI, where the SCI is used to indicate a side link transmission identifier.
  • the second terminal is used as a transmitting terminal
  • the first terminal is used as a receiving terminal.
  • the SCI is used to indicate a side-link transmission identifier, or a transmission identifier ID.
  • the side-link transmission identifier is configured by a high-level layer, configured by a network device, or predefined (such as a protocol agreement or a pre-configuration).
  • the side link transmission identifier may be used to indicate the identity information of the sending terminal or the receiving terminal and / or the type of data transmitted in the PSSCH corresponding to the SCI.
  • the side-link transmission identifier includes at least one of a sender identifier, a receiver identifier, a broadcast identifier, a multicast identifier, and a unicast identifier.
  • the side-link transmission identifier is determined according to at least part of bits of at least one of a layer two identifier, an application layer identifier, and an address identifier.
  • the identifier of the sending end may be the identifier of the transmitting terminal; the identifier of the receiving end may be the identifier of the receiving terminal; the broadcast identifier is used to indicate that the data carried in the PSSCH is broadcast data; the multicast identifier is used to indicate that the data carried by the PSSCH is multicast data And / or the terminal identification of the receiving group of the PSSCH-bearing data; the unicast identification is used to indicate that the data carried by the PSSCH is the receiving-side terminal identification of the unicast data and / or the PSSCH carrying data.
  • the sender ID is a 24-bit L2ID.
  • the side-link transmission identifier in the embodiment of the present disclosure may be explicitly indicated by SCI or implicitly indicated by SCI.
  • the embodiments of the present disclosure will further describe the specific form of the side link transmission identifier in these two aspects.
  • the explicit indication method includes: the side link transmission identifier is carried in the SCI indication field, or the side link transmission identifier is a redundant cyclic check CRC that scrambles the SCI.
  • the indication field includes one of the following: a first indication field formed by at least part of bits of a side-link transmission identifier; and a second indication field of a preset number of bits constructed according to a preset rule.
  • the first indication field refers to some or all of the bits in the SCI that carry a side link transmission identifier, and these bits constitute an independent indication field in the SCI.
  • the second indication field is determined according to the side link transmission identifier, or the second indication field is determined according to the mapping information of the side link transmission identifier.
  • the second indication field is formed by intercepting some or all of the bits of at least one of the sender identifier, receiver identifier, broadcast identifier, multicast identifier, and unicast identifier.
  • the terminal is configured with a mapping relationship table, and an item in the mapping relationship table is used to indicate a side link transmission identifier, and a second indication domain is determined according to a configuration item in the mapping relationship table, wherein the second indication domain is used to indicate the mapping. Items in a relationship table.
  • the indication fields may be independently encoded or jointly encoded.
  • the indication field can also be used to indicate at least one of response information (such as ACK / NACK), hybrid automatic repeat request HARQ process number, resource allocation, and modulation and coding strategy MCS. That is, at least one of the side-link transmission identification and response information, the HARQ process number, the resource allocation, and the modulation and coding strategy MCS is jointly coded.
  • the side-link transmission identifier corresponds to the target information indicated by the SCI, where the target information includes: resource allocation information, beam transmission mode information, and demodulation reference signal At least one of the DRMS information.
  • resource (pool) allocation and / or beam transmission modes are related to unicast, multicast, or broadcast.
  • the resource allocation information includes information on at least one of a time domain, a frequency domain, a space domain (beam), and a resource pool of a resource where the SCI is located.
  • the above-mentioned beam transmission mode includes at least one of single beam transmission, multi-beam transmission, and beam scanning.
  • the terminal sends an SCI to other terminals to indicate a side-link transmission identifier, so that other terminals determine whether to receive or demodulate the SCI according to the side-link transmission identifier.
  • PSSCH which can reduce the processing energy consumption of other terminals and save processing power.
  • the terminal 400 in the embodiment of the present disclosure can implement the side link control information SCI in the above embodiment, where the SCI is used to indicate the details of the side link transmission identification method and achieve the same effect.
  • the terminal 400 specifically includes the following functional modules:
  • the sending module is configured to send side link control information SCI, where the SCI is used to indicate a side link transmission identifier.
  • the side-link transmission identifier is determined according to at least part of bits of at least one of a layer two identifier, an application layer identifier, and an address identifier.
  • the side-link transmission identifier is configured by a high layer, configured by a network device, or predefined.
  • the side-link transmission identifier corresponds to the target information indicated by the SCI.
  • the target information includes at least one of resource allocation information, beam transmission mode information, and demodulation reference signal DRMS information.
  • the beam transmission mode includes at least one of single beam transmission, multi-beam transmission, and beam scanning.
  • the side-link transmission identifier includes at least one of a sender identifier, a receiver identifier, a broadcast identifier, a multicast identifier, and a unicast identifier.
  • the side-link transmission identifier is carried in an indication field of the SCI, or the side-link transmission identifier is a redundant cyclic check CRC that scrambles the SCI.
  • the indication field includes one of the following:
  • a first indication field formed by at least part of bits of a side link transmission identifier
  • a second indication field of a preset number of bits constructed according to a preset rule is a second indication field of a preset number of bits constructed according to a preset rule.
  • the second indication field is determined according to the side link transmission identifier, or the second indication field is determined according to the mapping information of the side link transmission identifier.
  • the indication field is further used to indicate at least one of response information, a hybrid automatic repeat request HARQ process number, resource allocation, and a modulation and coding strategy MCS.
  • the terminal in the embodiment of the present disclosure sends SCI to other terminals to indicate a side-link transmission identifier, so that other terminals determine whether to receive a PSSCH corresponding to the SCI according to the side-link transmission identifier, which can reduce The processing energy consumption of other terminals saves processing power.
  • each module of the above terminal is only a division of logical functions. In actual implementation, it may be fully or partially integrated into a physical entity, or it may be physically separated. And these modules can all be implemented in the form of software called by processing elements; they can also be all implemented in hardware; some modules can be implemented in the form of software called by processing elements, and some modules can be implemented in hardware.
  • the determination module may be a separately established processing element, or it may be integrated and implemented in a certain chip of the above device.
  • it may also be stored in the form of a program code in the memory of the above device, and a certain processing element of the above device Invoke and execute the functions of the above identified modules.
  • the implementation of other modules is similar.
  • each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (ASIC), or one or more microprocessors (digital signal processor (DSP), or one or more Field Programmable Gate Array (FPGA).
  • ASIC application specific integrated circuits
  • DSP digital signal processor
  • FPGA Field Programmable Gate Array
  • the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor that can call program code.
  • CPU Central Processing Unit
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 5 is a schematic diagram of a hardware structure of a terminal that implements various embodiments of the present disclosure.
  • the terminal 50 includes, but is not limited to, a radio frequency unit 51, a network module 52, an audio output unit 53, The input unit 54, the sensor 55, the display unit 56, the user input unit 57, the interface unit 58, the memory 59, the processor 510, and the power supply 511 and other components.
  • the terminal structure shown in FIG. 5 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or some components may be combined, or different components may be arranged.
  • the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a car terminal, a wearable device, a pedometer, and the like.
  • the radio frequency unit 51 is configured to receive side link control information SCI;
  • the processor 510 is configured to determine whether to receive or demodulate a physical side link shared channel PSSCH according to the side link transmission identifier indicated by the SCI.
  • the radio frequency unit 51 is configured to send side link control information SCI, where the SCI is used to indicate a side link transmission identifier.
  • the terminal according to the embodiment of the present disclosure can determine whether to receive or demodulate the PSSCH corresponding to the SCI according to the side-link transmission identifier without receiving or demodulating the PSSCH each time, which can reduce the processing energy consumption of the terminal and save processing capacity.
  • the radio frequency unit 51 may be used to receive and send signals during the transmission and reception of information or during a call. Specifically, the downlink data from the base station is received and processed by the processor 510; The uplink data is sent to the base station.
  • the radio frequency unit 51 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 51 can also communicate with a network and other devices through a wireless communication system.
  • the terminal provides users with wireless broadband Internet access through the network module 52, such as helping users to send and receive email, browse web pages, and access streaming media.
  • the audio output unit 53 may convert audio data received by the radio frequency unit 51 or the network module 52 or stored in the memory 59 into audio signals and output them as sound. Moreover, the audio output unit 53 may also provide audio output (for example, call signal reception sound, message reception sound, etc.) related to a specific function performed by the terminal 50.
  • the audio output unit 53 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 54 is used for receiving audio or video signals.
  • the input unit 54 may include a Graphics Processing Unit (GPU) 541 and a microphone 542.
  • the graphics processor 541 pairs images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
  • the processed image frames may be displayed on the display unit 56.
  • the image frames processed by the graphics processor 541 may be stored in the memory 59 (or other storage medium) or transmitted via the radio frequency unit 51 or the network module 52.
  • the microphone 542 can receive sound, and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 51 in the case of a telephone call mode and output.
  • the terminal 50 further includes at least one sensor 55, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 561 according to the brightness of the ambient light, and the proximity sensor can close the display panel 561 and / Or backlight.
  • an accelerometer sensor can detect the magnitude of acceleration in various directions (usually three axes).
  • sensor 55 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared The sensors and the like are not repeated here.
  • the display unit 56 is used to display information input by the user or information provided to the user.
  • the display unit 56 may include a display panel 561.
  • the display panel 561 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the user input unit 57 may be configured to receive inputted numeric or character information, and generate key signal inputs related to user settings and function control of the terminal.
  • the user input unit 57 includes a touch panel 571 and other input devices 572.
  • the touch panel 571 also known as a touch screen, can collect user's touch operations on or near it (for example, the user uses a finger, a stylus or any suitable object or accessory on the touch panel 571 or near the touch panel 571 operating).
  • the touch panel 571 may include two parts, a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, and detects the signal caused by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into contact coordinates, and sends it To the processor 510, receive the command sent by the processor 510 and execute it.
  • the touch panel 571 may be implemented in various types such as a resistive type, a capacitive type, an infrared type, and a surface acoustic wave.
  • the user input unit 57 may further include other input devices 572.
  • other input devices 572 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, and details are not described herein again.
  • the touch panel 571 may be overlaid on the display panel 561. After the touch panel 571 detects a touch operation on or near the touch panel 571, the touch panel 571 is transmitted to the processor 510 to determine the type of the touch event. The type of event provides corresponding visual output on the display panel 561.
  • the touch panel 571 and the display panel 561 are implemented as two independent components to implement input and output functions of the terminal, in some embodiments, the touch panel 571 and the display panel 561 may be integrated and Implement the input and output functions of the terminal, which are not limited here.
  • the interface unit 58 is an interface through which an external device is connected to the terminal 50.
  • the external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, and audio input / output (I / O) port, video I / O port, headphone port, and more.
  • the interface unit 58 may be used to receive an input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 50 or may be used between the terminal 50 and an external device. Transfer data.
  • the memory 59 can be used to store software programs and various data.
  • the memory 59 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, at least one function required application program (such as a sound playback function, an image playback function, etc.), etc .; Data (such as audio data, phone book, etc.) created by the use of mobile phones.
  • the memory 59 may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage device.
  • the processor 510 is a control center of the terminal, and uses various interfaces and lines to connect various parts of the entire terminal. By running or executing software programs and / or modules stored in the memory 59, and calling data stored in the memory 59, execution is performed. Various functions and processing data of the terminal, so as to monitor the terminal as a whole.
  • the processor 510 may include one or more processing units; optionally, the processor 510 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and an application program, etc.
  • the tuning processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 510.
  • the terminal 50 may further include a power source 511 (such as a battery) for supplying power to various components.
  • a power source 511 such as a battery
  • the power source 511 may be logically connected to the processor 510 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.
  • the terminal 50 includes some functional modules that are not shown, and details are not described herein again.
  • an embodiment of the present disclosure further provides a terminal, including a processor 510 and a memory 59, and a computer program stored in the memory 59 and executable on the processor 510.
  • the terminal may be a wireless terminal or a wired terminal.
  • the wireless terminal may be a device that provides voice and / or other business data connectivity to the user, a handheld device with a wireless connection function, or other processing equipment connected to a wireless modem. .
  • a wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN).
  • RAN Radio Access Network
  • the wireless terminal can be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal
  • a mobile terminal such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal
  • it can be a portable, compact, handheld, computer-built or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • a wireless terminal can also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a mobile station, a remote station, a remote terminal,
  • the access terminal Access terminal
  • user terminal User terminal
  • user agent User agent
  • user equipment User Equipment
  • An embodiment of the present disclosure further provides a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the disclosed apparatus and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure is essentially a part that contributes to related technologies or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including several
  • the instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • each component or each step can be disassembled and / or recombined.
  • These decompositions and / or recombinations should be regarded as equivalent solutions of the present disclosure.
  • the steps for performing the series of processes described above can be performed naturally in chronological order in accordance with the described order, but need not necessarily be performed in chronological order, and certain steps can be performed in parallel or independently of each other.
  • it is able to understand all or any steps or components of the methods and devices of the present disclosure and may be implemented in hardware, firmware in any computing device (including a processor, a storage medium, etc.) or a network of computing devices.
  • Software, or a combination thereof which can be achieved by a person of ordinary skill in the art using their basic programming skills after reading the description of the present disclosure.
  • the purpose of the present disclosure can also be achieved by running a program or a group of programs on any computing device.
  • the computing device may be a well-known general-purpose device. Therefore, the object of the present disclosure can also be achieved only by providing a program product including a program code that implements the method or device. That is, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that, in the apparatus and method of the present disclosure, it is obvious that each component or each step can be disassembled and / or recombined.

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Abstract

本公开公开了一种旁链路信息传输方法及终端，该方法包括：接收旁链路控制信息SCI；根据SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH。

Description

旁链路信息传输方法及终端
相关申请的交叉引用
本申请主张在2018年8月3日在中国提交的中国专利申请号No.201810879398.9的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种旁链路信息传输方法及终端。
背景技术
在长期演进(Long Term Evolution，LTE)移动通信系统中，旁链路(sidelink)，或称为副链路、侧链路、边链路等，用于终端之间不通过网络设备而进行直接传输。其中，终端通过物理旁链路控制信道(Physical Sidelink Control Channel，PSCCH)发送旁链路控制信息(Sidelink Control Information，SCI)，调度物理旁链路共享信道(Physical Sidelink Shared Channel，PSSCH)的传输以发送数据。其中，旁链路的传输是基于广播进行的，终端在物理层没有建立点对点连接。从接收端来说，由于物理层传输的SCI不包含任何发送端或接收端指示，也不区分单播、组播(或称为多播)和广播PSSCH，终端只能解调所有接收到的数据，再由高层来区分并做响应处理，例如通过媒体接入控制(Medium Access Control，MAC)层的层2标识(Level 2Identity，L2ID)，确定并丢弃不是发给自己的单播数据。这样对接收到的全部数据进行解调再丢弃不属于自己的数据，增加了终端的处理能耗，浪费终端的处理能力。
发明内容
本公开实施例提供了一种旁链路信息传输方法及终端，以解决旁链路传输过程中，终端的处理能耗高的问题。
第一方面，本公开实施例提供了一种旁链路信息传输方法，应用于第一终端侧，包括：
接收旁链路控制信息SCI；
根据SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH。
第二方面，本公开实施例还提供了一种终端，终端为第一终端，包括：
接收模块，用于接收旁链路控制信息SCI；
第一处理模块，用于根据SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH。
第三方面，本公开实施例提供了一种旁链路信息传输方法，应用于第二终端侧，包括：
发送旁链路控制信息SCI，其中，SCI用于指示旁链路传输标识。
第四方面，本公开实施例提供了一种终端，终端为第二终端，包括：
发送模块，用于发送旁链路控制信息SCI，其中，SCI用于指示旁链路传输标识。
第五方面，本公开实施例提供了一种终端，终端包括处理器、存储器以及存储于存储器上并在处理器上运行的计算机程序，计算机程序被处理器执行时实现上述第一终端侧或第二终端侧的旁链路信息传输方法的步骤。
第六方面，本公开实施例还提供了一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时实现上述第一终端侧或第二终端侧的旁链路信息传输方法的步骤。
这样，本公开实施例通过采用上述技术方案，接收侧的终端可根据旁链路传输标识确定是否需要接收或解调SCI对应的PSSCH，而无需每次接收或解调PSSCH，可以降低终端的处理能耗，节省处理能力。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例的描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1表示本公开实施例第一终端的旁链路信息传输方法的流程示意图；
图2表示本公开实施例第一终端的模块结构示意图；
图3表示本公开实施例第二终端的旁链路信息传输方法的流程示意图；
图4表示本公开实施例第二终端的模块结构示意图；
图5表示本公开实施例的终端框图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。说明书以及权利要求中“和/或”表示所连接对象的至少其中之一。
本公开实施例提供了一种旁链路信息传输方法，应用于第一终端侧，如图1所示，该方法包括以下步骤：
步骤11：接收旁链路控制信息SCI。
其中，SCI是第二终端发送的，这时第一终端作为接收侧终端，第二终端作为发送侧终端。本领域技术人员可以理解，第一终端有数据需要发送时，也可作为发送侧终端，第二终端也可作为接收侧终端。本公开实施例中SCI用于指示旁链路传输标识，或称为传输标示ID。
步骤12：根据SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH。
其中，旁链路传输标识是高层配置、网络设备配置的或预定义(如协议 约定或预配置)的。旁链路传输标识可用于指示发送终端或接收终端的身份信息，当第一终端的身份信息与发送终端身份信息相匹配时，第一终端确定该SCI对应的PSSCH中携带有发送给自己的信息，这时需要接收或解调该SCI对应的PSSCH；若不匹配则忽略该PSSCH，以节省能耗。当SCI发送终端的身份信息属于第一终端关心的终端时，第一终端确定需要接收或解调该SCI对应的PSSCH；若不属于则忽略该PSSCH。此外，旁链路传输标识还可用于指示SCI对应的PSSCH中传输的数据类型，如广播、单播或组播等。若为广播数据，第一终端确定需要接收或解调该SCI对应的PSSCH。若为单播或组播数据，若第一终端属于单播或组播对象，那么第一终端确定需要接收或解调该SCI对应的PSSCH，否则不再接收或解调该PSSCH，以节省处理能耗。
进一步地，旁链路传输标识包括：发送端标识、接收端标识、广播标识、组播标识和单播标识中的至少一项。其中，发送端标识可以是发送侧终端标识；接收端标识可以是接收侧终端标识；广播标识用于指示PSSCH中承载的数据为广播数据；组播标识用于指示PSSCH承载的数据为组播数据和/或PSSCH承载数据的接收组的终端标识；单播标识用于指示PSSCH承载的数据为单播数据和/或PSSCH承载数据的接收侧终端标识。其中，本公开实施例中旁链路传输标识是根据层二标识(L2ID)、应用层标识、高层标识(或称为上层标识)和地址标识中至少一项的至少部分比特确定的。例如旁链路传输标识为24比特L2ID，分别指示接收端标识和发送端标识。
当旁链路传输标识中携带的信息不同时，步骤12的具体实现方式不同，具体地，步骤12包括以下中的一项：
1、在SCI指示的发送端标识为目标发送端标识的情况下，接收或解调PSSCH。这种场景下，SCI指示发送端标识，当SCI指示的发送端标识属于目标发送端标识中的一个时，第一终端接收或解调该SCI对应的PSSCH。其中，目标发送端标识用于指示第一终端所关心终端的身份标识。进一步地，当SCI指示的发送端标识不属于目标发送端标识时，可根据SCI指示的其他信息确定是否接收或解调PSSCH。
2、在SCI指示的接收端表示为目标接收端标识的情况下，接收或解调 PSSCH。这种场景下，SCI指示接收端标识，当SCI指示的接收端标识属于目标接收端标识中的一个时，第一终端接收或解调该SCI对应的PSSCH。其中，目标接收端标识用于指示第二终端所期望的接收终端的身份标识。进一步地，当SCI指示的接收端标识不属于目标接收端标识时，可根据SCI指示的其他信息确定是否接收或解调PSSCH。
3、在SCI指示广播标识的情况下，接收或解调PSSCH。在这种场景下，SCI指示广播标识，这时第一终端需要接收或解调该SCI对应的PSSCH。进一步地，当SCI未指示广播标识时，可根据SCI指示的其他信息确定是否接收或解调PSSCH。
4、在SCI指示的组播标识为目标组播标识的情况下，接收或解调PSSCH。这种场景下，SCI指示组播标识，当SCI指示的组播标识属于目标组播标识中的一个时，第一终端接收或解调该SCI对应的PSSCH。其中，目标组播标识用于指示第一终端所关心的发送终端的身份标识和/或第二终端所期望的接收终端的身份标识。进一步地，当SCI指示的组播标识不属于目标组播标识时，可根据SCI指示的其他信息确定是否接收或解调PSSCH。
5、在SCI指示的单播标识为目标单播标识的情况下，接收或解调PSSCH。这种场景下，SCI指示单播标识，当SCI指示的单播标识属于目标单播标识中的一个时，第一终端接收或解调该SCI对应的PSSCH。其中，目标单播标识用于指示第一终端所关心发送终端的身份标识和/或第二终端所期望的接收终端的身份标识。进一步地，当SCI指示的单播标识不属于目标单播标识时，可根据SCI指示的其他信息确定是否接收或解调PSSCH。
其中，上述旁链路传输标识可通过SCI显式指示或通过SCI隐式指示。下面本公开实施例将就这两方面对旁链路传输标识的具体形式做进一步说明。
方式一、旁链路传输标识携带于SCI的指示域中。
其中，该方式为显式指示方式。指示域包括以下中的一项：由旁链路传输标识的至少部分比特形成的第一指示域；以及根据预设规则构造的预设比特位数的第二指示域。
其中，第一指示域指的是SCI中携带旁链路传输标识(如发送端标识、接收端标识、广播标识、组播标识和单播标识等)部分或全部比特，这些比 特构成SCI中独立的指示域。
其中，第二指示域是根据旁链路传输标识确定的。也就是说第二指示域是根据发送端标识、接收端标识、广播标识、组播标识和单播标识等中的至少一项，构造一个固定比特长度的指示域。例如，第二指示域是发送端标识、接收端标识、广播标识、组播标识和单播标识等中的至少一项的部分或全部比特(如组播的接收组ID和/或单播的接收端ID的部分或全部bit)；或者，第二指示域是将旁链路传输标识作为输入并按照预设规则构造固定比特长度的指示域，如将旁链路传输标识作为输入，并按照二进制和/或哈希(hash)函数构造固定比特长度的指示域。
此外，第二指示域还可以是根据旁链路传输标识的映射信息确定的。例如终端配置了一个映射关系表格，该映射关系表格中的项目用于指示旁链路传输标识，根据映射关系表格中配置项确定第二指示域，其中，第二指示域的比特值用于指示该映射关系表格中的项目。
进一步地，在该方式下，接收旁链路控制信息SCI的步骤之后还包括：通过掩码匹配第二指示域，确定是否接收或解调PSSCH。其中，这里的掩码可以是预定义的、网络设备配置的、第二终端发送的或第一终端自主生成的。第一终端通过掩码匹配第二指示域以确定是否接收或解调PSSCH，若匹配成功，则确定需要接收或解调PSSCH，若匹配失败，则不再接收或解调该SCI对应的PSSCH。进一步地，若只有旁链路传输标识中的部分比特构成掩码，那么需要匹配MAC层的ID才能确定是否接收或解调PSSCH。
在一种可选实施例中，本公开实施例中的指示域(如第一指示域或第二指示域)可以是独立编码的，也可以是联合编码的。以上介绍了指示域独立编码的场景，下面本实施例将进一步介绍指示域联合编码的场景。其中，当指示域是联合编码的时，指示域还可用于指示：应答信息(如ACK/NACK)、混合自动重传请求(Hybrid Automatic Repeat Request，HARQ)进程号、资源分配和调制与编码策略MCS中的至少一项。也就是说旁链路传输标识与应答信息、HARQ进程号、资源分配和调制与编码策略MCS中的至少一项联合编码。
方式二、旁链路传输标识为加扰SCI的冗余循环校验(Cyclic Redundancy  Check，CRC)。
该方式亦为显式指示方式，不同于方式一的独立指示域方式，该方式为加扰方式。例如可通过第一指示域或第二指示域作为加扰SCI的CRC。
方式三、旁链路传输标识与SCI指示的目标信息相对应。
该方式为隐式指示方式，旁链路传输标识通过SCI指示的目标信息指示处出来。其中，目标信息包括：资源分配信息、波束传输模式信息和解调参考信号(De-Modulation Reference Signal，DRMS)信息中的至少一项。例如，资源(池)分配和/或波束传输模式等与单播、组播或广播相关。其中，资源分配信息包括：SCI所在资源时域、频域、空域(波束)和资源池等中至少一项的信息。这样根据检测出的SCI所在资源时域、频域、空域(波束)、所属资源池等，确定出PSSCH中的数据是单播、组播或广播。进一步地，上述波束传输模式包括：单波束传输、多波束传输和波束扫描中的至少一项。
进一步地，步骤12之后，该方法还包括：在确定不接收或不解调PSSCH的情况下，根据SCI调度或预留的资源，进行资源感知(sensing)和/或资源预留。
或者，在步骤12之后，该方法还包括：在确定接收或解调PSSCH的情况下，根据PSSCH的处理结果反馈应答信息。特别地，对于需要发送应答反馈的数据，物理层在接收到PSSCH且成功解调PSSCH时反馈ACK，在未接收到PSSCH或未成功解调PSSCH时反馈NACK。这样，第一终端根据对PSSCH的实际处理情况反馈应答信息，在成功接收并解调PSSCH时反馈ACK，以指示发送终端无需进行不必要的重传，可节省系统资源。在未成功接收或未成功解调PSSCH时反馈NACK，以指示发送终端及时重传，以降低处理时延。
以上简单介绍了旁链路信息传输方法的实现方式，下面本实施例将结合具体应用示例对其做进一步说明。
示例一、
假设旁链路传输标识包括发送端标识和接收端标识，发送端标识和接收端标识为24比特L2ID，分别指示发送侧的终端和接收侧的终端。其中，第一终端接收到的SCI中包括接收端标识的指示域，且SCI的CRC不加扰。第 一终端获取至少一个目标接收端标识，其中，目标接收端标识可以是预定义的或高层配置的，目标接收端标识可以是发送侧终端(如第二终端)期望的组播或单播的接收端标识。
如果第一终端接收到的SCI中携带的接收端标识与第一终端的目标接收端标识相匹配，则第一终端继续接收并解调该SCI调度的PSSCH。第一终端将该接收端标识上报上层(例如MAC层和应用层等)。对于需要反馈应答信息的单播数据或组播数据(如SCI指示单播或组播需要反馈应答信息)，第一终端物理层编码反馈应答信息。若接收端标识与目标接收端标识不匹配，则第一终端不接收或不解调该SCI调度的PSSCH；进一步地，如果该第一终端配置了自主资源选择模式，第一终端可根据该SCI的资源分配或预留指示，进行后续的资源感知与预留。
该示例避免了第一终端接收并解调不关心的PSSCH，从而减少了不必要的解调处理，降低了能耗。并且可以再完成解调PSSCH数据的时候反馈应答信息，从而避免不必要的重传，提高系统资源利用率；亦可指示发送端及时对传输失败的数据进行重传，降低了处理时延。
示例二、
假设旁链路传输标识中的发送端标识和接收端标识为24比特L2ID，分别指示发送侧的终端和接收侧的终端。其中，第一终端接收到的SCI的CRC使用传输模式(单播、组播或广播)的指示域(用于指示旁链路传输标识中的单播标识、组播标识或广播标识的指示域)进行加扰。SCI中包括实际的接收端标识指示域，且如果是广播，SCI可以不包含接收端标识指示域或转义该指示域用于其他目的。此外，第一终端获取至少一个目标接收端标识，其中，目标接收端标识可以是预定义的或高层配置的，目标接收端标识可以是发送侧终端期望的组播或单播的接收端标识。
第一终端监听PSCCH并根据传输模式的指示域监听或盲检测SCI。如果第一终端对某个SCI的CRC校检通过，则第一终端知道该SCI调度的PSSCH的传输模式。如果是PSSCH是组播或单播，则进一步读取SCI中用于指示接收端标识的指示域。如果SCI中指示的接收端标识与目标接收端标识相匹配，则第一终端继续接收并解调该SCI调度的PSSCH。第一终端将该接收端标识 上报上层(例如MAC层和应用层等)。对于需要反馈应答信息的单播数据或组播数据(如SCI指示单播或组播需要反馈应答信息)，第一终端物理层编码反馈应答信息。若接收端标识与目标接收端标识不匹配，则第一终端不接收或不解调该SCI调度的PSSCH；进一步地，如果该第一终端配置了自主资源选择模式，第一终端可根据该SCI的资源分配或预留指示，进行后续的资源感知与预留。
示例三、
假设旁链路传输标识中的发送端标识和接收端标识为24比特L2ID，分别指示发送侧的终端和接收侧的终端。其中，第一终端接收到的SCI的CRC使用接收端标识的指示域进行加扰。第一终端获取至少一个目标接收端标识，其中，目标接收端标识可以是预定义的或高层配置的，目标接收端标识可以是发送侧终端期望的组播或单播的接收端标识。
第一终端监听PSCCH并根据传输模式的指示域监听或盲检测SCI。如果某个SCI加扰的接收端标识与目标接收端标识相匹配，则该SCI的CRC校检通过，则第一终端知道该SCI调度的PSSCH的传输类型以及接收端标识，第一终端继续接收并解调该SCI调度的PSSCH。第一终端将该接收端标识上报上层(例如MAC层和应用层等)。对于需要反馈应答信息的数据，第一终端物理层编码反馈应答信息。
示例四、
假设旁链路传输标识中的发送端标识和接收端标识为24比特L2ID，分别指示发送侧的终端和接收侧的终端。其中，第一终端接收到的SCI的CRC使用接收端标识或发送端标识的指示域进行加扰。例如对于广播或组播数据，使用接收端标识加扰CRC，对于单播数据使用发送端标识加扰CRC。此外，第一终端获取至少一个目标接收端标识，其中，目标接收端标识可以是预定义的或高层配置的，目标接收端标识可以是发送侧终端期望的组播或单播的接收端标识。第一终端获取至少一个目标发送端标识，其中，目标发送端标识可以是预定义的或高层配置的，目标发送端标识可以是第一终端关心的组播或单播的发送端标识。
第一终端监听PSCCH，并根据其配置的发送端标识与目标发送端标识监 听或盲检测SCI。
如果某个SCI加扰的是接收端标识且匹配目标接收端标识，则该SCI的CRC校检通过，从而第一终端知道该SCI调度的PSSCH的传输类型(广播或组播)以及接收端标识。
如果某个SCI加扰的是发送端标识且匹配目标发送端标识，则该SCI的CRC校检通过，从而第一终端知道该SCI调度的PSSCH的传输类型(单播)以及发送端标识。
这样，第一终端继续接收并解调该SCI调度的PSSCH。第一终端将该接收端标识上报上层(例如MAC层和应用层等)。对于需要反馈应答信息的数据，第一终端物理层编码反馈应答信息。
另外，第一终端还可以根据PSSCH中MAC层的发送端标识和/或接收端标识进一步检测虚警(false alarm)。如果该PSSCH不是该第一终端期望接收的，则丢弃该数据包。
在第一终端不接收或不解调PSSCH或第一终端丢弃了PSSCH的情况下，如果第一终端配置了自主资源选择模式，第一终端可根据该SCI的资源分配或预留指示，进行后续资源感知与预留。
示例五、
假设旁链路传输标识中的发送端标识和接收端标识为24比特L2ID，分别指示发送侧的终端和接收侧的终端。MAC包括发送端标识和接收端标识，SCI包括一个固定比特长度(预设比特位数，如8bits)的第二指示域，其中，这第二指示域由发送端标识和/或接收端标识的部分或全部比特构造。例如截取发送端标识和/或接收端标识其中的8比特组成，或者，由发送端标识和/或接收端标识进行hash计算获得的8比特组成。其中，第一终端还获取了至少一个目标接收端标识，其中，目标接收端标识可以是预定义的或高层配置的，目标接收端标识可以是发送侧终端期望的组播或单播的接收端标识。此外，第一终端还可构造一个与第二指示域长度相同的掩码，该掩码由发送端标识和/或接收端标识的部分或全部比特构造。例如该掩码由截取发送端标识和/或接收端标识中的8比特组成，或者，由发送端标识和/或接收端标识进行hash计算获得的8比特组成。如有多个标识还可进一步通过二进制计算构造 第二指示域或掩码。
第一终端监听PSCCH并根据传输模式的指示域监听或盲检测SCI。第一终端根据构造的掩码对SCI中第二指示域进行掩码操作，如果结果匹配，则说明该SCI调度的PSSCH可能是第一终端感兴趣的PSSCH，第一终端继续接收并解调该SCI调度的PSSCH。若结果不匹配，则不接收或不解调该SCI调度的PSSCH。
另外，第一终端还可以根据PSSCH中MAC层的发送端标识和/或接收端标识进一步检测虚警。如果该PSSCH不是该第一终端期望接收的，则丢弃该数据包。例如当第二指示域或掩码基于发送端标识和/或接收端标识的部分比特构造形成，或者第二指示域或掩码的长度小于发送端标识和/或接收端标识长度时，可能会发生虚警。
在第一终端丢弃了PSSCH的情况下，如果第一终端配置了自主资源选择模式，第一终端可根据该SCI的资源分配或预留指示，进行后续资源感知与预留。
示例六、
假设旁链路传输标识中的发送端标识和接收端标识为24比特L2ID，分别指示发送侧的终端和接收侧的终端。SCI包括一个固定比特长度(预设比特位数，如8bits)的第二指示域，其中，这第二指示域的内容有一个预定义或配置的映射信息确定。如终端配置了一个映射关系表格，该映射关系表格中的项目用于指示旁链路传输标识，其中，第二指示域的比特值用于指示该映射关系表格中的项目。
第一终端监听PSCCH并根据传输模式的指示域监听或盲检测SCI。第一终端根据第二指示域匹配映射关系表格中的某一配置项，第一终端通过查表确定旁链路传输标识(如发送端标识和/或接收端标识)，第一终端根据查表确定的旁链路传输标识确定是否继续接收并解调该SCI调度的PSSCH。
进一步地，第一终端在继续接收并解调该SCI调度的PSSCH的情况下，将该接收端标识上报上层(例如MAC层和应用层等)。对于需要反馈应答信息的数据，第一终端物理层编码反馈应答信息。
在第一终端不接收或不解调PSSCH的情况下，如果第一终端配置了自主 资源选择模式，第一终端可根据该SCI的资源分配或预留指示，进行后续资源感知与预留。
本公开实施例的旁链路信息传输方法中，接收侧的终端可根据旁链路传输标识确定是否需要接收或解调SCI对应的PSSCH，而无需每次接收或解调PSSCH，可以降低终端的处理能耗，节省处理能力。
以上实施例分别详细介绍了不同场景下的旁链路信息传输方法，下面本实施例将结合附图对其对应的终端做进一步介绍。
如图2所示，本公开实施例的终端200，能实现上述实施例中接收旁链路控制信息SCI；根据SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH方法的细节，并达到相同的效果，该终端200具体包括以下功能模块：
接收模块210，用于接收旁链路控制信息SCI；
第一处理模块220，用于根据SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH。
其中，旁链路传输标识是根据层二标识、应用层标识和地址标识中至少一项的至少部分比特确定的。
其中，旁链路传输标识是高层配置、网络设备配置的或预定义的。
其中，旁链路传输标识与SCI指示的目标信息相对应，其中，目标信息包括：资源分配信息、波束传输模式信息和解调参考信号DRMS信息中的至少一项。
其中，波束传输模式包括：单波束传输、多波束传输和波束扫描中的至少一项。
其中，旁链路传输标识包括：发送端标识、接收端标识、广播标识、组播标识和单播标识中的至少一项。
其中，第一处理模块220包括以下中的一项：
第一处理子模块，用于在SCI指示的发送端标识为目标发送端标识的情况下，接收或解调PSSCH；
第二处理子模块，用于在SCI指示的接收端表示为目标接收端标识的情况下，接收或解调PSSCH；
第三处理子模块，用于在SCI指示广播标识的情况下，接收或解调PSSCH；
第四处理子模块，用于在SCI指示的组播标识为目标组播标识的情况下，接收或解调PSSCH；
第五处理子模块，用于在SCI指示的单播标识为目标单播标识的情况下，接收或解调PSSCH。
其中，旁链路传输标识携带于SCI的指示域中，或者，旁链路传输标识为加扰SCI的冗余循环校验CRC。
其中，指示域包括以下中的一项：
由旁链路传输标识的至少部分比特形成的第一指示域；
根据预设规则构造的预设比特位数的第二指示域。
其中，第二指示域是根据旁链路传输标识确定的，或者，第二指示域是根据旁链路传输标识的映射信息确定的。
其中，终端200还包括：
确定模块，用于通过掩码匹配第二指示域，确定是否接收或解调PSSCH。
其中，指示域还用于指示：应答信息、混合自动重传请求HARQ进程号、资源分配和调制与编码策略MCS中的至少一项。
其中，终端200还包括：
第二处理模块，用于在确定不接收或不解调PSSCH的情况下，根据SCI调度或预留的资源，进行资源感知和/或资源预留；
或者，
第三处理模块，用于在确定接收或解调PSSCH的情况下，根据PSSCH的处理结果反馈应答信息。
值得指出的是，本公开实施例的终端可根据旁链路传输标识，确定是否需要接收或解调SCI对应的PSSCH，而无需每次接收或解调PSSCH，可以降低终端的处理能耗，节省处理能力。
以上实施例从接收侧终端介绍了本公开的旁链路信息传输方法，下面本实施例将结合附图对发送侧终端的旁链路信息传输旁链路信息传输方法做进一步介绍。
如图3所示，本公开实施例的旁链路信息传输方法，应用于第二终端， 该方法包括以下步骤：
步骤31：发送旁链路控制信息SCI，其中，SCI用于指示旁链路传输标识。
其中，第二终端作为发送侧终端，第一终端作为接收侧终端。本领域技术人员可以理解，第一终端有数据需要发送时，也可作为发送侧终端，第二终端也可作为接收侧终端。本公开实施例中SCI用于指示旁链路传输标识，或称为传输标示ID。
其中，旁链路传输标识是高层配置、网络设备配置的或预定义(如协议约定或预配置)的。旁链路传输标识可用于指示发送终端或接收终端的身份信息和/或SCI对应的PSSCH中传输的数据类型。其中，旁链路传输标识包括：发送端标识、接收端标识、广播标识、组播标识和单播标识中的至少一项。本公开实施例中旁链路传输标识是根据层二标识、应用层标识和地址标识中至少一项的至少部分比特确定的。其中，发送端标识可以是发送侧终端标识；接收端标识可以是接收侧终端标识；广播标识用于指示PSSCH中承载的数据为广播数据；组播标识用于指示PSSCH承载的数据为组播数据和/或PSSCH承载数据的接收组的终端标识；单播标识用于指示PSSCH承载的数据为单播数据和/或PSSCH承载数据的接收侧终端标识。例如发送端标识为24比特L2ID。
其中，本公开实施例中旁链路传输标识可通过SCI显式指示或通过SCI隐式指示。下面本公开实施例将就这两方面对旁链路传输标识的具体形式做进一步说明。
显式指示方式包括：旁链路传输标识携带于SCI的指示域中，或者，旁链路传输标识为加扰SCI的冗余循环校验CRC。
其中，指示域包括以下中的一项：由旁链路传输标识的至少部分比特形成的第一指示域；以及根据预设规则构造的预设比特位数的第二指示域。
具体地，第一指示域指的是SCI中携带旁链路传输标识部分或全部比特，这些比特构成SCI中独立的指示域。第二指示域是根据旁链路传输标识确定的，或者，第二指示域是根据旁链路传输标识的映射信息确定的。如第二指示域是截取发送端标识、接收端标识、广播标识、组播标识和单播标识等中 的至少一项的部分或全部比特构成的。或者，终端配置了一个映射关系表格，该映射关系表格中的项目用于指示旁链路传输标识，根据映射关系表格中配置项确定第二指示域，其中，第二指示域用于指示该映射关系表格中的项目。
本公开实施例中的指示域(如第一指示域或第二指示域)可以是独立编码的，也可以是联合编码的。其中，当指示域是联合编码的时，指示域还可用于指示：应答信息(如ACK/NACK)、混合自动重传请求HARQ进程号、资源分配和调制与编码策略MCS中的至少一项。也就是说旁链路传输标识与应答信息、HARQ进程号、资源分配和调制与编码策略MCS中的至少一项联合编码。
以上介绍了显式指示方式，下面将进一步介绍隐式指示方式：旁链路传输标识与SCI指示的目标信息相对应，其中，目标信息包括：资源分配信息、波束传输模式信息和解调参考信号DRMS信息中的至少一项。例如，资源(池)分配和/或波束传输模式等与单播、组播或广播相关。其中，资源分配信息包括：SCI所在资源时域、频域、空域(波束)和资源池等中至少一项的信息。进一步地，上述波束传输模式包括：单波束传输、多波束传输和波束扫描中的至少一项。
本公开实施例的旁链路信息传输方法中，终端向其他终端发送SCI，以指示旁链路传输标识，以使其他终端根据该旁链路传输标识确定是否需要接收或解调与该SCI对应的PSSCH，这样可降低其他终端的处理能耗，节省处理能力。
以上实施例介绍了不同场景下的旁链路信息传输方法，下面将结合附图对与其对应的终端做进一步介绍。
如图4所示，本公开实施例的终端400，能实现上述实施例中发送旁链路控制信息SCI，其中，SCI用于指示旁链路传输标识方法的细节，并达到相同的效果，该终端400具体包括以下功能模块：
发送模块，用于发送旁链路控制信息SCI，其中，SCI用于指示旁链路传输标识。
其中，旁链路传输标识是根据层二标识、应用层标识和地址标识中至少一项的至少部分比特确定的。
其中，旁链路传输标识是高层配置、网络设备配置的或预定义的。
其中，旁链路传输标识与SCI指示的目标信息相对应，其中，目标信息包括：资源分配信息、波束传输模式信息和解调参考信号DRMS信息中的至少一项。
其中，波束传输模式包括：单波束传输、多波束传输和波束扫描中的至少一项。
其中，旁链路传输标识包括：发送端标识、接收端标识、广播标识、组播标识和单播标识中的至少一项。
其中，旁链路传输标识携带于SCI的指示域中，或者，旁链路传输标识为加扰SCI的冗余循环校验CRC。
其中，指示域包括以下中的一项：
由旁链路传输标识的至少部分比特形成的第一指示域；
根据预设规则构造的预设比特位数的第二指示域。
其中，第二指示域是根据旁链路传输标识确定的，或者，第二指示域是根据旁链路传输标识的映射信息确定的。
其中，指示域还用于指示：应答信息、混合自动重传请求HARQ进程号、资源分配和调制与编码策略MCS中的至少一项。
值得指出的是，本公开实施例的终端向其他终端发送SCI，以指示旁链路传输标识，以使其他终端根据该旁链路传输标识确定是否需要接收与该SCI对应的PSSCH，这样可降低其他终端的处理能耗，节省处理能力。
需要说明的是，应理解以上终端的各个模块的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块通过处理元件调用软件的形式实现，部分模块通过硬件的形式实现。例如，确定模块可以为单独设立的处理元件，也可以集成在上述装置的某一个芯片中实现，此外，也可以以程序代码的形式存储于上述装置的存储器中，由上述装置的某一个处理元件调用并执行以上确定模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路， 具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
为了更好的实现上述目的，进一步地，图5为实现本公开各个实施例的一种终端的硬件结构示意图，该终端50包括但不限于：射频单元51、网络模块52、音频输出单元53、输入单元54、传感器55、显示单元56、用户输入单元57、接口单元58、存储器59、处理器510、以及电源511等部件。本领域技术人员可以理解，图5中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。在本公开实施例中，终端包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。
其中，当终端是接收侧终端时，射频单元51，用于接收旁链路控制信息SCI；
处理器510，用于根据所述SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH。
当终端是发送侧终端时，射频单元51用于发送旁链路控制信息SCI，其中，所述SCI用于指示旁链路传输标识。
本公开实施例的终端可根据旁链路传输标识确定是否需要接收或解调SCI对应的PSSCH，而无需每次接收或解调PSSCH，可以降低终端的处理能耗，节省处理能力。
应理解的是，本公开实施例中，射频单元51可用于收发信息或通话过程中，信号的接收和发送，具体的，将来自基站的下行数据接收后，给处理器 510处理；另外，将上行的数据发送给基站。通常，射频单元51包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元51还可以通过无线通信系统与网络和其他设备通信。
终端通过网络模块52为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元53可以将射频单元51或网络模块52接收的或者在存储器59中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元53还可以提供与终端50执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元53包括扬声器、蜂鸣器以及受话器等。
输入单元54用于接收音频或视频信号。输入单元54可以包括图形处理器(Graphics Processing Unit，GPU)541和麦克风542，图形处理器541对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元56上。经图形处理器541处理后的图像帧可以存储在存储器59(或其它存储介质)中或者经由射频单元51或网络模块52进行发送。麦克风542可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元51发送到移动通信基站的格式输出。
终端50还包括至少一种传感器55，比如光传感器、运动传感器以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板561的亮度，接近传感器可在终端50移动到耳边时，关闭显示面板561和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别终端姿态(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器55还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元56用于显示由用户输入的信息或提供给用户的信息。显示单元56可包括显示面板561，可以采用液晶显示器(Liquid Crystal Display，LCD)、 有机发光二极管(Organic Light-Emitting Diode，OLED)等形式来配置显示面板561。
用户输入单元57可用于接收输入的数字或字符信息，以及产生与终端的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元57包括触控面板571以及其他输入设备572。触控面板571，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板571上或在触控面板571附近的操作)。触控面板571可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器510，接收处理器510发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板571。除了触控面板571，用户输入单元57还可以包括其他输入设备572。具体地，其他输入设备572可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板571可覆盖在显示面板561上，当触控面板571检测到在其上或附近的触摸操作后，传送给处理器510以确定触摸事件的类型，随后处理器510根据触摸事件的类型在显示面板561上提供相应的视觉输出。虽然在图5中，触控面板571与显示面板561是作为两个独立的部件来实现终端的输入和输出功能，但是在某些实施例中，可以将触控面板571与显示面板561集成而实现终端的输入和输出功能，具体此处不做限定。
接口单元58为外部装置与终端50连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输出(I/O)端口、视频I/O端口、耳机端口等等。接口单元58可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收到的输入传输到终端50内的一个或多个元件或者可以用于在终端50和外部装置之间传输数据。
存储器59可用于存储软件程序以及各种数据。存储器59可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能 所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器59可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器510是终端的控制中心，利用各种接口和线路连接整个终端的各个部分，通过运行或执行存储在存储器59内的软件程序和/或模块，以及调用存储在存储器59内的数据，执行终端的各种功能和处理数据，从而对终端进行整体监控。处理器510可包括一个或多个处理单元；可选的，处理器510可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器510中。
终端50还可以包括给各个部件供电的电源511(比如电池)，可选的，电源511可以通过电源管理系统与处理器510逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
另外，终端50包括一些未示出的功能模块，在此不再赘述。
可选的，本公开实施例还提供一种终端，包括处理器510，存储器59，存储在存储器59上并可在所述处理器510上运行的计算机程序，该计算机程序被处理器510执行时实现上述旁链路信息传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，终端可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiation Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端也可以称为系统、订户单元 (Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、用户设备(User Device或User Equipment)，在此不作限定。
本公开实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述旁链路信息传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，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。
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，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中， 也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
此外，需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行，某些步骤可以并行或彼此独立地执行。对本领域的普通技术人员而言，能够理解本公开的方法和装置的全部或者任何步骤或者部件，可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中，以硬件、固件、软件或者它们的组合加以实现，这是本领域普通技术人员在阅读了本公开的说明的情况下运用他们的基本编程技能就能实现的。
因此，本公开的目的还可以通过在任何计算装置上运行一个程序或者一组程序来实现。所述计算装置可以是公知的通用装置。因此，本公开的目的也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说，这样的程序产品也构成本公开，并且存储有这样的程序产品的存储介质也构成本公开。显然，所述存储介质可以是任何公知的存储介质或者将来所开发出来的任何存储介质。还需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上所述的是本公开的可选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (23)

  1. 一种旁链路信息传输方法，应用于第一终端侧，所述旁链路信息传输方法包括：
    接收旁链路控制信息(SCI)；
    根据所述SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道(PSSCH)。
  2. 根据权利要求1所述的旁链路信息传输方法，其中，所述旁链路传输标识包括：发送端标识、接收端标识、广播标识、组播标识和单播标识中的至少一项。
  3. 根据权利要求2所述的旁链路信息传输方法，其中，根据所述SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH的步骤，包括以下中的一项：
    在所述SCI指示的发送端标识为目标发送端标识的情况下，接收或解调所述PSSCH；
    在所述SCI指示的接收端表示为目标接收端标识的情况下，接收或解调所述PSSCH；
    在所述SCI指示广播标识的情况下，接收或解调所述PSSCH；
    在所述SCI指示的组播标识为目标组播标识的情况下，接收或解调所述PSSCH；
    在所述SCI指示的单播标识为目标单播标识的情况下，接收或解调所述PSSCH。
  4. 根据权利要求1所述的旁链路信息传输方法，其中，所述旁链路传输标识携带于所述SCI的指示域中，或者，所述旁链路传输标识为加扰所述SCI的冗余循环校验(CRC)。
  5. 根据权利要求4所述的旁链路信息传输方法，其中，所述指示域包括以下中的一项：
    由所述旁链路传输标识的至少部分比特形成的第一指示域；
    根据预设规则构造的预设比特位数的第二指示域。
  6. 根据权利要求5所述的旁链路信息传输方法，其中，所述第二指示域是根据所述旁链路传输标识确定的，或者，所述第二指示域是根据所述旁链路传输标识的映射信息确定的。
  7. 根据权利要求5所述的旁链路信息传输方法，其中，接收旁链路控制信息SCI的步骤之后，还包括：
    通过掩码匹配所述第二指示域，确定是否接收或解调所述PSSCH。
  8. 根据权利要求4所述的旁链路信息传输方法，其中，所述指示域还用于指示：应答信息、混合自动重传请求(HARQ)进程号、资源分配和调制与编码策略(MCS)中的至少一项。
  9. 根据权利要求1所述的旁链路信息传输方法，其中，根据所述SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道PSSCH的步骤之后，还包括：
    在确定不接收或不解调所述PSSCH的情况下，根据所述SCI调度或预留的资源，进行资源感知和/或资源预留；
    或者，
    在确定接收或解调所述PSSCH的情况下，根据PSSCH的处理结果反馈应答信息。
  10. 一种终端，所述终端为第一终端，包括：
    接收模块，用于接收旁链路控制信息(SCI)；
    第一处理模块，用于根据所述SCI指示的旁链路传输标识，确定是否接收或解调物理旁链路共享信道(PSSCH)。
  11. 一种旁链路信息传输方法，应用于第二终端侧，所述旁链路信息传输方法包括：
    发送旁链路控制信息(SCI)，其中，所述SCI用于指示旁链路传输标识。
  12. 根据权利要求1或11所述的旁链路信息传输方法，其中，所述旁链路传输标识是根据层二标识、应用层标识和地址标识中至少一项的至少部分比特确定的。
  13. 根据权利要求1或11所述的旁链路信息传输方法，其中，所述旁链路传输标识是高层配置、网络设备配置的或预定义的。
  14. 根据权利要求1或11所述的旁链路信息传输方法，其中，所述旁链路传输标识与所述SCI指示的目标信息相对应，其中，所述目标信息包括：资源分配信息、波束传输模式信息和解调参考信号(DRMS)信息中的至少一项。
  15. 根据权利要求14所述的旁链路信息传输方法，其中，所述波束传输模式包括：单波束传输、多波束传输和波束扫描中的至少一项。
  16. 根据权利要求11所述的旁链路信息传输方法，其中，所述旁链路传输标识包括：发送端标识、接收端标识、广播标识、组播标识和单播标识中的至少一项。
  17. 根据权利要求11所述的旁链路信息传输方法，其中，所述旁链路传输标识携带于所述SCI的指示域中，或者，所述旁链路传输标识为加扰所述SCI的冗余循环校验(CRC)。
  18. 根据权利要求17所述的旁链路信息传输方法，其中，所述指示域包括以下中的一项：
    由所述旁链路传输标识的至少部分比特形成的第一指示域；
    根据预设规则构造的预设比特位数的第二指示域。
  19. 根据权利要求18所述的旁链路信息传输方法，其中，所述第二指示域是根据所述旁链路传输标识确定的，或者，所述第二指示域是根据所述旁链路传输标识的映射信息确定的。
  20. 根据权利要求17所述的旁链路信息传输方法，其中，所述指示域还用于指示：应答信息、混合自动重传请求(HARQ)进程号、资源分配和调制与编码策略(MCS)中的至少一项。
  21. 一种终端，所述终端为第二终端，包括：
    发送模块，用于发送旁链路控制信息(SCI)，其中，所述SCI用于指示旁链路传输标识。
  22. 一种终端，包括处理器、存储器以及存储于所述存储器上并在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至9、11至20中任一项所述的旁链路信息传输方法的步骤。
  23. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算 机程序，所述计算机程序被处理器执行时实现如权利要求1至9、11至20中任一项所述的旁链路信息传输方法的步骤。
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