CN117279092A - Method and terminal for transmitting sidelink data - Google Patents

Method and terminal for transmitting sidelink data Download PDF

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Publication number
CN117279092A
CN117279092A CN202210669850.5A CN202210669850A CN117279092A CN 117279092 A CN117279092 A CN 117279092A CN 202210669850 A CN202210669850 A CN 202210669850A CN 117279092 A CN117279092 A CN 117279092A
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CN
China
Prior art keywords
terminal
resource
message
data
indicated
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CN202210669850.5A
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Chinese (zh)
Inventor
杨聿铭
王欢
纪子超
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN202210669850.5A priority Critical patent/CN117279092A/en
Priority to PCT/CN2023/099832 priority patent/WO2023241541A1/en
Publication of CN117279092A publication Critical patent/CN117279092A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • 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
    • 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
    • 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
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink

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

Abstract

The embodiment of the application discloses a method and a terminal for transmitting sidelink data, which belong to the technical field of communication, and the method for transmitting the sidelink data comprises the following steps: the first terminal performs at least one of: determining a first beam; sending a first message to a third terminal; the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.

Description

Method and terminal for transmitting sidelink data
Technical Field
The application belongs to the technical field of communication, and particularly relates to a side link (sidelink) data transmission method and a terminal.
Background
The long term evolution (Long Term Evolution, LTE) system supports sidelink transmission, i.e., data transmission between terminals (UEs) directly on the physical layer. LTE sidelink is broadcast based and is not suitable for other higher level V2X services, although it may be used to support basic security class communications for internet of vehicles (vehicle to everything, V2X). The 5G NR (New Radio) system supports more advanced sidelink transmission designs, such as unicast, multicast or multicast, etc., so that more comprehensive service types can be supported.
Because of the lack of low frequency resources, 5G NR uses a high frequency band such as millimeter wave, and because propagation loss of the high frequency band is greater than that of the low frequency band, its coverage distance is inferior to that of LTE. In order to solve the problem, one solution is to implement enhancement of signals by a multi-antenna Beam Forming (Beam Forming) method, so as to implement enhancement of coverage. Beamforming is a signal processing technique that uses an array of sensors to directionally transmit and receive signals. The beam forming technology enables signals of certain angles to obtain constructive interference and signals of other angles to obtain destructive interference by adjusting parameters of basic units of the phased array, so that an antenna beam is directed in a specific direction. The establishment of the downlink beam is typically determined by a synchronization Signal/physical broadcast channel Signal block/synchronization Signal block (Synchronization Signal and PBCH block, SSB) and a channel state information Reference Signal (Channel State Information-Reference Signal, CSI-RS) Reference Signal.
Taking SSB as an example, since the beam is narrow, the same SSB is transmitted to different directions in NR in a manner of time division duplexing (Time Division Duplexing, TDD) through the beam, so that terminals in each direction can receive the SSB. In one example, within 5ms, the base station transmits multiple SSBs (corresponding to different SSB indexes) to cover different directions, and the terminal receives multiple SSBs with different signal strengths and selects one strongest SSB beam as its own SSB beam.
When the sidelink uses the beamforming technology to communicate, since the terminal may autonomously determine resources, the receiving end may need to receive data of multiple transmitting ends in a short time, which may cause that the receiving end cannot fully receive the data due to the directional characteristic of the beam and the influence of the beam switching time. Therefore, some research designs are needed, so that the receiving and transmitting ends can avoid the problems of communication failure and even system performance degradation caused by beam reception as much as possible.
Disclosure of Invention
The embodiment of the application provides a method and a terminal for transmitting sidelink data, which can solve the problems of communication failure and even system performance degradation caused by using beam reception in sidelink.
In a first aspect, a method for transmitting sidelink data is provided, including: the first terminal performs at least one of: determining a first beam; sending a first message to a third terminal; the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
In a second aspect, a sidelink data transmission device is provided, and the sidelink data transmission device is applied to a first terminal and comprises at least one of the following components: a processing module for determining a first beam; the sending module is used for sending the first message to the third terminal; the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
In a third aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.
In a fourth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to determine a first beam, and the communication interface is configured to send a first message to a third terminal; the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
In a fifth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor realizes the steps of the method according to the first aspect.
In a sixth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method according to the first aspect.
In a seventh aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to carry out the steps of the method according to the first aspect.
In the embodiment of the present application, the first terminal performs at least one of the following: determining a first beam; transmitting a first message to a third terminal, wherein the first beam is used for communication at a first resource, and the first resource is a transmission resource of a second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal. The embodiment of the application is beneficial to the sidelink data transmission by the first terminal by using the wave beam, and improves the performance of a communication system.
Drawings
Fig. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of a method of sidelink data transmission according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a sidelink data transmission device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.
It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a new air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) th Generation, 6G) communication system.
Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmitting/receiving point (TransmittingReceivingPoint, TRP), or some other suitable terminology in the field, so long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only a base station in an NR system is described as an example, and a specific type of the base station is not limited.
The method for transmitting the sidelink data provided by the embodiment of the application is described in detail below by means of some embodiments and application scenes thereof with reference to the accompanying drawings.
As shown in fig. 2, the embodiment of the present application provides a sidelink data transmission method 200, which may be performed by a first terminal, in other words, the method may be performed by software or hardware installed in the first terminal, and the method includes the following steps.
S202: the first terminal performs at least one of: determining a first beam; sending a first message to a third terminal; the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
In various embodiments of the present application, the first terminal may be a terminal that receives the sidelink data; the second terminal and the third terminal may be terminals that transmit the sidelink data. The sidelink data may be hereinafter referred to simply as data, which may include at least one of: control information, feedback information, target data (specifically one or more data), reference signals, etc.
The embodiments of the present application may be applied in the FR2 band, where one receiving end (i.e. the first terminal) faces multiple transmitting ends (i.e. the second terminal, the third terminal).
In this embodiment, the first terminal may determine a first beam, where the first beam is used for communication on a first resource, where the first resource is a transmission resource of the second terminal. The embodiment is beneficial to the communication of the first terminal through the first wave beam and realizes the transmission of the sidelink data.
In this embodiment, the first terminal determines that the first beam may be divided into the following two cases:
in the first case, the first terminal selects one of the transmission beams indicated by the plurality of transmission terminals (e.g., the second terminal, the third terminal, etc.). In this embodiment, the first terminal selects the beam indicated by the second terminal. In this embodiment, the first beam may be a reception beam of the first terminal, or may be a transmission beam of the second terminal, or may be a beam pair. In one example, the second terminal indicates a beam pair comprising a transmit beam of the second terminal and a receive beam of the first terminal; in another example, the second terminal may indicate its own transmit beam and the first terminal may determine the corresponding receive beam.
In case two, the first terminal selects to communicate (including transmit or receive) on a certain resource (e.g., the first resource), and thus determines the first beam. In this embodiment, the first terminal selects to receive the data sent on the first resource indicated by the second terminal, and since the second terminal also indicates to send a beam, the first terminal selects to receive the data of the second terminal, which corresponds to determining the first beam. In this embodiment, the first beam may be a transmission beam of the second terminal, and may also be a reception beam of the first terminal. Optionally, the determining, by the first terminal, the first beam includes: the first terminal determines to communicate using the first beam on the first resource.
In the case that the first terminal determines to receive the data on the first resource by using the first beam, since the data of other terminals (i.e., the third terminal) cannot be received by using the beams other than the first beam at the same time, if the other terminals continue to transmit the data by using the beam selected by themselves, the resource waste and the system performance degradation are caused.
To avoid this, in this embodiment, the first terminal may further send a first message to the third terminal, the first message being used to indicate at least one of: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
Specifically, for example, the first message may indicate to the third terminal that the first resource is an un-recommended resource, so that the third terminal is prevented from selecting the first resource to send data, and the third terminal is prevented from using the first beam to receive data; for another example, the first message may indicate to the third terminal that the first resource is a recommended resource, where the first terminal expects that the transmission resource selected by the third terminal is located in a time range in which the first terminal uses the first beam for data reception, and that the transmission beam used by the third terminal may also be received by the first beam, so that the first terminal may receive the transmission data of the plurality of terminals by using the first beam; for another example, the first message may indicate to the third terminal information of the first beam, so that if the third terminal can switch to a transmission beam corresponding to the first beam and meeting the receiving requirement, the third terminal may transmit data to the first terminal using the switched transmission beam, and if the third terminal cannot switch to the transmission beam corresponding to the first beam, the third terminal may perform operations such as resource reselection; for another example, the first message includes a resource conflict indication, so that the third terminal can adjust the sending resource in advance by a method such as resource reselection after receiving the conflict indication, so as to avoid the conflict with the first resource; for another example, the first message is used to confirm the resources and/or beams indicated by the third terminal; for another example, the first message is used to reject resources and/or beams indicated by the third terminal.
Optionally, the first message may be carried on at least one of: side link control information (Sidelink Control Information, SCI), medium access control unit (Media Access Control Control Element, MAC CE), physical side link feedback channel (Physical Sidelink Feedback Channel, PSFCH), radio resource control (Radio Resource Control, RRC) message, physical side link shared channel (Physical Sidelink Shared Channel, PSSCH).
It should be noted that, the first terminal may also be configured to determine the first beam and send the first message to the third terminal in two independent actions, and in other embodiments, the first terminal may also determine only the first beam; alternatively, only the first message is sent to the third terminal.
According to the sidelink data transmission method provided by the embodiment of the application, the first terminal executes at least one of the following steps: determining a first beam; transmitting a first message to a third terminal, wherein the first beam is used for communication at a first resource, and the first resource is a transmission resource of a second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal. The embodiment of the application is beneficial to the sidelink data transmission by the first terminal by using the wave beam, and improves the performance of a communication system.
In the embodiment of the present application, when facing multiple sending ends in the FR2 scenario, the first terminal sends the first message, where the first message may be an indication message or a collaboration message, so as to avoid the problem that the data packet of other terminals cannot be received due to the use of directional beams to receive specific data is lost or the system performance is reduced, thereby improving the performance of the communication system.
Optionally, on the basis of the embodiment shown in fig. 2, the determining, by the first terminal, the first beam includes: the first terminal determines the first beam according to at least one of:
1) The first terminal expects a time T for data reception using one beam. For example, the time (or duration) T may be the shortest time that the first terminal expects to receive with one beam.
2) Priority of data. For example, the selected first beam (beam) is a transmission beam indicated by a terminal (i.e., second terminal) with highest data priority to be transmitted to the first terminal, a beam pair (beam pair), or a reception beam corresponding to the indicated beam pair; for another example, the selected first beam is a transmission beam indicated by a terminal with the highest data priority transmitted to the first terminal in the time T, a beam pair, or a reception beam corresponding to the indicated beam pair; for another example, the selected first beam is a transmission beam, a reception beam, a beam pair, or a reception beam corresponding to a beam pair corresponding to the data with the highest priority that can be received by the first terminal in the time T; for another example, consider that when receiving a physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH), the first beam selected is the highest priority beam corresponding to the PSFCH.
3) Reference signal received power (Reference Signal Receiving Power, RSRP). For example, the first beam selected is a transmit beam with an RSRP greater than a threshold (threshold), a receive beam, a beam pair
4) Each beam receives a data amount of data. For example, the selected first beam may receive the most PSFCH, or the most physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH), or the most physical sidelink control channel (Physical Sidelink Control Channel, PSCCH).
5) Whether the duration required for switching to the target beam satisfies the processing duration. For example, from the current beam, a beam is selected that satisfies a processing time that is required for switching to the target beam (i.e., a beam for which switching cannot be completed is not selected). For example, when the terminal selects one beam to receive at time T and determines a received beam at time t+1, the processing time of beam switching needs to be considered.
6) The type of data. For example, a beam that preferentially receives broadcasts, a beam that only receives multicast with negative acknowledgement (NACK only), a beam that requires or does not require HARQ feedback, and the like are selected.
Alternatively, the first beam may also be an omni-directional beam based on the embodiment shown in fig. 2. For example, if the first terminal can meet the requirement of reception when using an omni-directional beam, such as RSRP requirement, etc., the first terminal can receive using an omni-directional beam, thereby avoiding the problem that may be caused by using a directional beam to receive data in only certain directions.
Optionally, on the basis of the embodiment shown in fig. 2, the first message satisfies at least one of the following:
1) The first message is sent in a broadcast, multicast or unicast mode.
2) The second beam is indicated by a second beam, the second beam being different from the first beam. For example, the first terminal indicates that the first resource is a non-recommended (non-recommended) resource through the second beam. The example can avoid the situation that the third terminal transmits data by utilizing different beams on the same resource (namely, the first resource), so that the data cannot be received, and the performance of the communication system is improved.
3) The first message is carried on terminal Coordination (IUC).
4) The sending time of the first message is not later than time K, and the time K is determined by at least one of the following: the time when the first terminal is switched to the first beam, the time when the first resource is located, the processing time of the first message, the time when the resource indicated by the third terminal is located, and the time when the resource is reselected. For example, because the first terminal transmits the first message to the third terminal, it is desirable that the third terminal does not transmit data to itself on the first resource, and the first terminal is required to transmit the first message at a timing not later than that
Optionally, the first message includes at least one of:
1) Indicating that the first resource is an un-recommended resource. For example, the first message carries time-frequency domain information of the first resource and/or an identifier, which indicates that the first resource is an un-recommended resource. The example can avoid the situation that the third terminal transmits data by using different beams on the same resource (namely, on the first resource), so that the first terminal cannot receive partial data, and the performance of the communication system is improved.
2) The resources (which may be first resources) within a time period in which the first terminal desires to use the first beam for data reception are indicated as non-recommended resources. For example, the first message carries time-frequency domain indication information of the resource set, and/or an identifier, which indicates that the current resource set is an un-recommended resource. The example can avoid the situation that the third terminal uses different beams to transmit data on the resource set, so that the first terminal can not receive partial data, and the performance of the communication system is improved.
In various embodiments of the present application, the resources in the period of time in which the first terminal expects to use the first beam to perform data reception may include first resources, may further include resources other than the first resources, and may further include part of the resources in the first resources.
The example can avoid the situation that the third terminal uses different beams to transmit data on the same resource, so that the data cannot be received, and the performance of the communication system is improved.
3) A time range of reception is performed using the first beam. For example, the first terminal informs other terminals of the time range in which the other terminals receive using the first beam, and expects the other terminals to either avoid the time range or transmit using the first beam or a transmission beam corresponding to the first beam in the time range, thereby facilitating the first terminal to receive data.
4) The first terminal receives an identification of a beam used by the data. In this example, the first terminal may indicate the identity of the beam that the first terminal will employ (e.g., the identity of the first beam), and if the other terminal can adjust, the first terminal uses the transmission beam corresponding to the beam to transmit; if not, no transmission is performed. In this embodiment, the identification of the beam may include at least one of: beam number, corresponding reference signal identification, transmission configuration indication (Transmission Configuration Indicator, TCI) state (state), quasi Co-Location (QCL) information, scrambling code, etc.
5) The first terminal receives an identification of a corresponding transmit beam of a beam used by the data.
6) An Identification (ID) of the first terminal.
7) And the confirmation information indicates to confirm the resources or the beams indicated by the third terminal. For example, the first message carries ACK feedback, and confirms that the third terminal can use the indicated resource or beam to perform data transmission, which indicates that the first terminal can receive the data of the third terminal.
8) And rejecting information, wherein the rejecting information indicates rejecting of the resource or the beam indicated by the third terminal. For example, the first message carries NACK feedback, and the information that the third terminal can use the indicated resource or beam to perform data transmission is refused, which indicates that the first terminal will not receive the data currently indicated by the third terminal.
Optionally, on the basis of the embodiment shown in fig. 2, the first message is used to indicate at least one of the following:
1) And recommending resources, wherein the recommended resources comprise resources in a time period when the first terminal expects to use the first beam for data reception. For example, the first message carries a resource set and/or an identifier, where the resources indicating the indicated resource set are resources in a period of time when the first terminal desires to use the first beam for data reception, and it is desired that the third terminal can use the recommended resources to communicate with the first terminal.
2) The first terminal is configured to identify a received beam, e.g., an identification of a first beam. Indicating that the first terminal decides to receive using the first beam or the receive beam of the first beam on the indicated resources.
3) The first terminal receives an identification of a corresponding transmit beam of a beam used by the data.
In this embodiment, the first message may be sent in a broadcast, multicast or unicast manner.
In this embodiment, the first terminal uses resource recommendation, so that the first terminal can use one beam (i.e., the first beam) to simultaneously or continuously receive the resources sent by the second terminal and the third terminal, thereby improving the resource utilization rate and improving the performance of the communication system.
In this embodiment, the first message may be sent by the first terminal if a first condition is satisfied, where the first condition includes at least one of:
1) And the beam indicated by the second terminal and the third terminal are quasi co-located.
2) And the second terminal and the receiving beam corresponding to the beam indicated by the third terminal are quasi co-located.
3) And the sending beam or beam pair indicated by the second terminal and the third terminal are the same.
4) And the receiving wave beams corresponding to the sending wave beams indicated by the second terminal and the third terminal are the same.
5) And the beam pairs indicated by the second terminal and the third terminal are the same as the corresponding receiving beams.
6) The first terminal receives the measured value of the sending beam indicated by the third terminal by using the first beam, wherein the measured value is larger than a first threshold value. For example, when the first terminal receives the measured value (RSRP) of the transmission beam indicated by the third terminal with the first beam, which is greater than the first threshold, that is, the beam that can not affect the reception even if it is not the optimal pairing, can be used.
7) And the resources indicated by the third terminal are continuous or identical with the resource time domain indicated by the second terminal. For example, when the transmission beam or beam pair indicated by the second terminal and the third terminal are different, and the resource indicated by the third terminal is continuous or identical in time domain to the resource indicated by the second terminal, and when the first terminal receives the data of the second terminal, and the first terminal does not receive the resource of the third terminal or the resource with lower priority after performing beam switching, the third terminal is instructed to switch the beam to transmit, for example, switch to the same beam as the second terminal through the first message.
Optionally, on the basis of various embodiments of the present application, the method further includes: the first terminal uses directional beam reception under the condition that the second condition is satisfied; wherein the second condition includes at least one of:
1) The first terminal configured resource pool enables directional beam reception based on beam indication.
2) The RSRP of the first terminal for omni-directional reception is smaller than a second threshold.
3) The priority of the data received by the first terminal is higher than a third threshold.
Optionally, on the basis of the embodiment shown in fig. 2, the first message is used to indicate that the transmission resource of the third terminal collides with the first resource.
In this embodiment, the first message may be sent by the first terminal if a third condition is satisfied, where the third condition includes at least one of:
1) The beams indicated by the second terminal and the third terminal are not quasi co-located.
2) The corresponding beams of the beams indicated by the second terminal and the third terminal are not quasi co-located.
3) The transmission beam or beam pair indicated by the second terminal and the third terminal are different.
4) And the resources indicated by the third terminal are continuous or identical with the resource time domain indicated by the second terminal.
5) And the priority of the data sent by the third terminal is lower than that of the data sent by the second terminal.
In this embodiment, the first terminal expects the third terminal to perform resource reselection and the like by sending the collision indication, so as to avoid that the first terminal cannot receive the corresponding resource and influence the performance, thereby improving the performance of the communication system.
Optionally, on the basis of the above embodiments of the present application, the first message may be used to trigger the third terminal to perform a first action, where the first action includes at least one of:
1) And (5) resource reselection. That is, after receiving the first message, the third terminal avoids sending data to the first terminal on the first resource through resource reselection.
2) The beam is reselected. That is, after the third terminal receives the first message, the third terminal selects a transmission beam which can be received by the first terminal to transmit data to the first terminal.
3) And (5) packet loss.
Optionally, the second terminal is determined by the first terminal according to at least one of:
1) Indicating the priority of the data received by the first terminal. For example, the selected second terminal is the terminal with the highest data priority sent to the first terminal.
2) Indicating the measured value RSRP on the reception resources of the first terminal. For example, the selected second terminal is a terminal whose RSRP transmitted to the first terminal is greater than a threshold value.
Optionally, the data referred to in the various embodiments of the present application include at least one of: control information, feedback information, target data, reference signals.
Optionally, in various embodiments of the present application, after the first terminal determines the first beam, the method further includes: the first terminal sends a second message to the second terminal, wherein the second message is confirmation information.
Optionally, the second message may be carried on at least one of: SCI, MAC CE, PSFCH, RRC, PSSCH.
Optionally, the second message satisfies at least one of: 1) The second message is sent in a broadcast, multicast or unicast mode; 2) The sending time of the second message is not later than time T, and the time T is determined by at least one of the following: and when the first terminal is switched to the first beam, the first resource is positioned at the moment, and the processing time of the first message is the processing time of the first message.
In order to describe the sidelink data transmission method provided in the embodiment of the present application in detail, a specific embodiment will be described below, where the receiving end coordinates the behavior of the transmitting end.
After the terminal a (i.e. the first terminal) determines that a directional beam (e.g. the first beam) is used for receiving data at a certain moment or within a certain period, since the beam other than the directional beam cannot be used for receiving the data of other terminals (e.g. the third terminal), if the other terminals continue to use the beam selected by themselves for data transmission, the resource waste and the system performance degradation are caused.
To avoid this, in this embodiment, the methods that the terminal can take are mainly the following (corresponding to the role of the first message above):
1. And sending a message to other terminals, wherein the message indicates that the terminal does not expect data reception in time K or a period of time after time K. For example, IUC messages are sent to other terminals, which carry non-preferred resources so that other terminals avoid sending themselves on these resources, whether or not a beam indication is received.
2. And sending the first beam information to other terminals to indicate which one of the self-determined receiving beams is, wherein if the other terminals have data transmission at the corresponding moment, the other terminals can only adopt the corresponding transmitting beam, and if the corresponding beam cannot be adopted, the operations such as resource reselection and the like are carried out, whether the beam indication is received or not.
3. And sending the second beam information to other terminals, namely coordinating other terminals which want to send, so that the terminals can send data by using the beam indicated by the terminal A, and the terminal A can receive the data by using the same beam. For example, if the terminal a finds that a beam selected by the terminal a is not a transmission beam desired by the terminal a but is an adjacent or partially overlapped transmission beam by receiving the beam indication information, the terminal a may be instructed to switch to the transmission beam desired by the terminal a.
4. And sending the resource recommendation information to the corresponding terminal. For example, when the terminal a finds that the corresponding reception beam of the beam indicated by the terminal is the reception beam determined by the terminal a, but the resource is not within the time range in which the terminal a expects to use the reception beam for data reception, the terminal a may use the reception of the terminal a by sending the recommended resource to the terminal so that the terminal reselects the transmission resource.
5. After receiving beam indications of a plurality of terminals and determining received beams according to a certain rule, the terminal A sends conflict indications to terminals which cannot receive, so that the terminals can adjust sending resources in advance through methods such as resource reselection and the like.
In the method for transmitting sidelink data provided in the embodiment of the present application, the execution body may be a sidelink data transmission device. In the embodiment of the present application, a method for performing a sidelink data transmission by a sidelink data transmission device is taken as an example, and the sidelink data transmission device provided in the embodiment of the present application is described.
Fig. 3 is a schematic structural diagram of a sidelink data transmission device according to an embodiment of the present application, and the device may be applied to a first terminal. As shown in fig. 3, the apparatus 300 includes the following modules.
A processing module 302 is configured to determine a first beam.
A sending module 304, configured to send a first message to a third terminal; the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
In the sidelink data transmission device provided by the embodiment of the application, a processing module determines a first beam; the method comprises the steps that a sending module sends a first message to a third terminal, wherein the first beam is used for communication on a first resource, and the first resource is a sending resource of a second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal. The embodiment of the application is beneficial to the sidelink data transmission by the first terminal by using the wave beam, and improves the performance of a communication system
Optionally, as an embodiment, the processing module 302 is configured to determine the first beam according to at least one of: 1) The time T at which the device expects to receive data using one beam; 2) Priority of data; 3) RSRP; 4) A data amount of reception data per beam; 5) Whether the duration required for switching to the target beam satisfies the processing duration; 6) The type of data.
Optionally, as an embodiment, the first beam is an omni-directional beam.
Optionally, as an embodiment, the first message satisfies at least one of: 1) The first message is sent in a broadcast, multicast or unicast mode; 2) Indicating by a second beam, the second beam being different from the first beam; 3) The first message is carried on an IUC; 4) The sending time of the first message is not later than time K, and the time K is determined by at least one of the following: the time when the device switches to the first beam, the time when the first resource is located, the processing time of the first message, the time when the resource indicated by the third terminal is located, and the time when the resource is reselected. For example, the first terminal needs to send the first message to inform the third terminal that the third terminal cannot perform the reception, which requires that the time of sending the first message cannot be too late, so that the third terminal cannot reach the resource reselection and the like to cause the problems of packet loss or invalid sending and the like. Therefore, the time of sending the first message needs to be earlier than the time at which the resource indicated by the third terminal is located, while considering the processing time of reserving the first message, the time of reselecting the resource, and the like. If both are indicated first resources, it is necessary to add processing time and/or resource reselection time of the first message to the time before the first resources are located.
Optionally, as an embodiment, the first message includes at least one of: 1) Indicating that the first resource is an un-recommended resource; 2) Indicating that resources within a time period in which the apparatus expects to use the first beam for data reception are non-recommended resources; 3) A time range for reception using the first beam; 4) The device receives an identification of a beam used by the data; 5) The device receives the identification of the corresponding transmission beam of the beam used by the data; 6) An identification ID of the device; 7) The confirmation information indicates to confirm the resources or the beams indicated by the third terminal; 8) And rejecting information, wherein the rejecting information indicates rejecting of the resource or the beam indicated by the third terminal.
Optionally, as an embodiment, the first message is used to indicate at least one of: 1) A recommended resource comprising a resource within a time period in which the apparatus expects to use the first beam for data reception; 2) The apparatus is for identification of a received beam; 3) The apparatus receives an identification of a corresponding transmit beam of the beams used by the data.
Optionally, as an embodiment, the first message is sent if a first condition is met, where the first condition includes at least one of: 1) The beam quasi co-location indicated by the second terminal and the third terminal; 2) The second terminal and the receiving beam corresponding to the beam indicated by the third terminal are quasi co-located; 3) The sending wave beam or wave beam pair indicated by the second terminal and the third terminal are the same; 4) The receiving wave beams corresponding to the sending wave beams indicated by the second terminal and the third terminal are the same; 5) The beam pairs indicated by the second terminal and the third terminal are the same as the corresponding receiving beams; 6) The device receives the measured value of the sending beam indicated by the third terminal by using the first beam, wherein the measured value is larger than a first threshold value; 7) And the resources indicated by the third terminal are continuous or identical with the resource time domain indicated by the second terminal.
Optionally, as an embodiment, the apparatus further includes a receiving module configured to use directional beam reception if the second condition is satisfied; wherein the second condition includes at least one of: 1) The resource pool configured by the device enables directional beam reception based on beam indication; 2) The RSRP of the device for omni-directional reception is smaller than a second threshold; 3) The device receives data having a priority above a third threshold.
Optionally, as an embodiment, the first message is used to indicate that a transmission resource of the third terminal collides with the first resource. For example, the first terminal uses a terminal cooperation mechanism or HARQ feedback to send a first message to inform the third terminal that the transmission resource indicated by the first terminal collides with the resource determined to receive the second terminal by the first terminal, so that the third terminal is expected to perform operations such as resource reselection, and invalid transmission or unnecessary interference is avoided.
Optionally, as an embodiment, the first message is sent if a third condition is met, where the third condition includes at least one of: 1) The beams indicated by the second terminal and the third terminal are not quasi co-located; 2) The corresponding beams of the beams indicated by the second terminal and the third terminal are not quasi co-located; 3) The second terminal and the third terminal indicate different transmission beams or beam pairs; 4) The resources indicated by the third terminal are continuous or identical with the resource time domains indicated by the second terminal; 5) And the priority of the data sent by the third terminal is lower than that of the data sent by the second terminal.
Optionally, as an embodiment, the first message is configured to trigger the third terminal to perform a first action, where the first action includes at least one of: 1) Resource reselection; 2) Reselecting the beam; 3) And (5) packet loss.
Optionally, as an embodiment, the first message is carried on at least one of: SCI, MAC CE, PSFCH, RRC, PSSCH.
Optionally, as an embodiment, the second terminal is determined according to at least one of: 1) Indicating a priority of data received by the device; 2) Indicating the measured value RSRP on the receiving resources of the device.
Optionally, as an embodiment, the data includes at least one of: control information, feedback information, target data, reference signals.
Optionally, as an embodiment, the processing module 302 is configured to determine to use the first beam for communication on the first resource.
Optionally, as an embodiment, the sending module 304 is further configured to send a second message to the second terminal, where the second message is acknowledgement information.
Alternatively, as an embodiment, the second message may be carried on at least one of: SCI, MAC CE, PSFCH, RRC, PSSCH.
Optionally, as an embodiment, the second message satisfies at least one of: 1) The second message is sent in a broadcast, multicast or unicast mode; 2) The sending time of the second message is not later than time T, and the time T is determined by at least one of the following: and the device switches to the time of the first beam, the moment of the first resource and the processing time of the first message.
The apparatus 300 according to the embodiment of the present application may refer to the flow of the method 200 corresponding to the embodiment of the present application, and each unit/module in the apparatus 300 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 200, and may achieve the same or equivalent technical effects, which are not described herein for brevity.
The sidelink data transmission device in the embodiment of the application may be an electronic device, for example, an electronic device with an operating system, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.
The sidelink data transmission device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.
Optionally, as shown in fig. 4, the embodiment of the present application further provides a communication device 400, including a processor 401 and a memory 402, where the memory 402 stores a program or an instruction that can be executed on the processor 401, for example, when the communication device 400 is a terminal, the program or the instruction is executed by the processor 401 to implement each step of the above-mentioned embodiment of the sidelink data transmission method, and the same technical effects can be achieved, so that repetition is avoided and no further description is given here.
The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for determining a first wave beam, and the communication interface is used for sending a first message to a third terminal; the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 5 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.
The terminal 500 includes, but is not limited to: at least some of the components of the radio frequency unit 501, the network module 502, the audio output unit 503, the input unit 504, the sensor 505, the display unit 506, the user input unit 507, the interface unit 508, the memory 509, and the processor 510.
Those skilled in the art will appreciate that the terminal 500 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 510 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 5 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.
It should be appreciated that in embodiments of the present application, the input unit 504 may include a graphics processing unit (Graphics Processing Unit, GPU) 5041 and a microphone 5042, with the graphics processor 5041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 507 includes at least one of a touch panel 5071 and other input devices 5072. Touch panel 5071, also referred to as a touch screen. Touch panel 5071 may include two parts, a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.
In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 501 may transmit the downlink data to the processor 510 for processing; in addition, the radio frequency unit 501 may send uplink data to the network side device. Typically, the radio frequency unit 501 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
The memory 509 may be used to store software programs or instructions as well as various data. The memory 509 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 509 may include volatile memory or nonvolatile memory, or the memory 509 may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (ProgrammableROM, PROM), an erasable programmable Read-only memory (ErasablePROM, EPROM), an electrically erasable programmable Read-only memory (ElectricallyEPROM, EEPROM), or a flash memory, among others. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 509 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
Processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 510.
The radio frequency unit 501 may be configured to send a first message to a third terminal.
A processor 510 operable to determine a first beam; the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
The terminal provided in the embodiment of the present application may perform at least one of the following: determining a first beam; transmitting a first message to a third terminal, wherein the first beam is used for communication at a first resource, and the first resource is a transmission resource of a second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal. The embodiment of the present application is beneficial to the sidelink data transmission performed by the first terminal by using the beam, improves the performance of the communication system, and the terminal 500 provided in the embodiment of the present application may further implement each process of the above embodiment of the sidelink data transmission method, and may achieve the same technical effect, so as to avoid repetition, and is not repeated here.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the above embodiment of the sidelink data transmission method are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no detailed description is given here.
Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is configured to run a program or an instruction, implement each process of the above embodiment of the sidelink data transmission method, and achieve the same technical effect, so that repetition is avoided, and no further description is provided here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.
The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above-mentioned embodiment of the sidelink data transmission method, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.
The embodiment of the application also provides a sidelink data transmission system, which comprises: the terminal and the network side equipment can be used for executing the steps of the sidelink data transmission method.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (36)

1. A method for transmitting sidelink data, comprising: the first terminal performs at least one of:
determining a first beam;
sending a first message to a third terminal;
the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
2. The method of claim 1, wherein the first terminal determining the first beam comprises: the first terminal determines the first beam according to at least one of:
the time T when the first terminal expects to utilize one wave beam for data receiving;
priority of data;
reference signal received power RSRP;
a data amount of reception data per beam;
whether the duration required for switching to the target beam satisfies the processing duration;
the type of data.
3. The method of claim 1, wherein the first beam is an omni-directional beam.
4. The method of claim 1, wherein the first message satisfies at least one of:
the first message is sent in a broadcast, multicast or unicast mode;
indicating by a second beam, the second beam being different from the first beam;
the first message is carried on terminal collaboration information IUC;
the sending time of the first message is not later than time K, and the time K is determined by at least one of the following: the time when the first terminal is switched to the first beam, the time when the first resource is located, the processing time of the first message, the time when the resource indicated by the third terminal is located, and the time when the resource is reselected.
5. The method of claim 1, wherein the first message comprises at least one of:
indicating that the first resource is an un-recommended resource;
indicating that resources in a time period in which the first terminal expects to use the first beam for data reception are non-recommended resources;
a time range for reception using the first beam;
the first terminal receives the identification of the wave beam used by the data;
the first terminal receives the identification of the corresponding transmitting beam of the beam used by the data;
An identification ID of the first terminal;
the confirmation information indicates to confirm the resources or the beams indicated by the third terminal;
and rejecting information, wherein the rejecting information indicates rejecting of the resource or the beam indicated by the third terminal.
6. The method of claim 1, wherein the first message is used to indicate at least one of:
recommended resources, wherein the recommended resources comprise resources in a time period when the first terminal expects to use the first wave beam for data receiving;
the first terminal is used for identifying received wave beams;
the first terminal receives an identification of a corresponding transmit beam of a beam used by the data.
7. The method of claim 6, wherein the first message is sent by the first terminal if a first condition is satisfied, the first condition comprising at least one of:
the beam quasi co-location indicated by the second terminal and the third terminal;
the second terminal and the receiving beam corresponding to the beam indicated by the third terminal are quasi co-located;
the sending wave beam or wave beam pair indicated by the second terminal and the third terminal are the same;
the receiving wave beams corresponding to the sending wave beams indicated by the second terminal and the third terminal are the same;
The beam pairs indicated by the second terminal and the third terminal are the same as the corresponding receiving beams;
the first terminal receives a measured value of a sending beam indicated by the third terminal by using the first beam, wherein the measured value is larger than a first threshold value;
and the resources indicated by the third terminal are continuous or identical with the resource time domain indicated by the second terminal.
8. The method according to claim 1, wherein the method further comprises: the first terminal uses directional beam reception under the condition that the second condition is satisfied; wherein the second condition includes at least one of:
the resource pool configured by the first terminal enables directional beam reception based on beam indication;
the RSRP of the first terminal for omni-directional reception is smaller than a second threshold;
the priority of the data received by the first terminal is higher than a third threshold.
9. The method of claim 1, wherein the first message is used to indicate that a transmission resource of the third terminal collides with the first resource.
10. The method of claim 9, wherein the first message is sent by the first terminal if a third condition is satisfied, the third condition comprising at least one of:
The beams indicated by the second terminal and the third terminal are not quasi co-located;
the corresponding beams of the beams indicated by the second terminal and the third terminal are not quasi co-located;
the second terminal and the third terminal indicate different transmission beams or beam pairs;
the resources indicated by the third terminal are continuous or identical with the resource time domains indicated by the second terminal;
and the priority of the data sent by the third terminal is lower than that of the data sent by the second terminal.
11. The method of claim 1, wherein the first message is used to trigger the third terminal to perform a first action, the first action comprising at least one of:
resource reselection;
reselecting the beam;
and (5) packet loss.
12. The method of claim 1, wherein the first message is carried on at least one of: the physical side link feedback channel PSFCH, the radio resource control information RRC, the physical side link data channel PSSCH.
13. The method of claim 1, wherein the second terminal is determined by the first terminal based on at least one of:
Indicating the priority of the data received by the first terminal;
indicating the measured value RSRP on the reception resources of the first terminal.
14. The method of claim 1,2,5,6,8, 10 or 13, wherein the data comprises at least one of: control information, feedback information, target data, reference signals.
15. The method of claim 1, wherein the first terminal determining the first beam comprises:
the first terminal determines to communicate using the first beam on the first resource.
16. The method of claim 1, the first terminal determining the first beam, the method further comprising: the first terminal sends a second message to the second terminal, wherein the second message is confirmation information.
17. The method of claim 16, wherein the second message is carried on at least one of: the physical side link feedback channel PSFCH, the radio resource control information RRC, the physical side link data channel PSSCH.
18. The method of claim 16, wherein the second message satisfies at least one of:
The second message is sent in a broadcast, multicast or unicast mode;
the sending time of the second message is not later than time T, and the time T is determined by at least one of the following: and when the first terminal is switched to the first beam, the first resource is positioned at the moment, and the processing time of the first message is the processing time of the first message.
19. A sidelink data transmission device, comprising at least one of:
a processing module for determining a first beam;
the sending module is used for sending the first message to the third terminal;
the first beam is used for communication at a first resource, and the first resource is a transmission resource of the second terminal; the first message is used for indicating at least one of the following: non-recommended resources; recommended resources, the resources collide; beam information; and confirming the resources or the beams indicated by the third terminal, and rejecting the resources or the beams indicated by the third terminal.
20. The apparatus of claim 19, wherein the processing module is configured to determine the first beam based on at least one of:
the time T at which the device expects to receive data using one beam;
priority of data;
Reference signal received power RSRP;
a data amount of reception data per beam;
whether the duration required for switching to the target beam satisfies the processing duration;
the type of data.
21. The apparatus of claim 19, wherein the first beam is an omni-directional beam.
22. The apparatus of claim 19, wherein the first message satisfies at least one of:
the first message is sent in a broadcast, multicast or unicast mode;
indicating by a second beam, the second beam being different from the first beam;
the first message is carried on an IUC;
the sending time of the first message is not later than time K, and the time K is determined by at least one of the following: the time when the device switches to the first beam, the time when the first resource is located, the processing time of the first message, the time when the resource indicated by the third terminal is located, and the time when the resource is reselected.
23. The apparatus of claim 19, wherein the first message comprises at least one of:
indicating that the first resource is an un-recommended resource;
indicating that resources within a time period in which the apparatus expects to use the first beam for data reception are non-recommended resources;
A time range for reception using the first beam;
the device receives an identification of a beam used by the data;
the device receives the identification of the corresponding transmission beam of the beam used by the data;
an identification ID of the device;
the confirmation information indicates to confirm the resources or the beams indicated by the third terminal;
and rejecting information, wherein the rejecting information indicates rejecting of the resource or the beam indicated by the third terminal.
24. The apparatus of claim 19, wherein the first message is to indicate at least one of:
a recommended resource comprising a resource within a time period in which the apparatus expects to use the first beam for data reception;
the apparatus is for identification of a received beam;
the apparatus receives an identification of a corresponding transmit beam of the beams used by the data.
25. The apparatus of claim 24, wherein the first message is sent if a first condition is satisfied, the first condition comprising at least one of:
the beam quasi co-location indicated by the second terminal and the third terminal;
the second terminal and the receiving beam corresponding to the beam indicated by the third terminal are quasi co-located;
The sending wave beam or wave beam pair indicated by the second terminal and the third terminal are the same;
the receiving wave beams corresponding to the sending wave beams indicated by the second terminal and the third terminal are the same;
the beam pairs indicated by the second terminal and the third terminal are the same as the corresponding receiving beams;
the device receives the measured value of the sending beam indicated by the third terminal by using the first beam, wherein the measured value is larger than a first threshold value;
and the resources indicated by the third terminal are continuous or identical with the resource time domain indicated by the second terminal.
26. The apparatus of claim 19, further comprising a receiving module for receiving using a directional beam if a second condition is met; wherein the second condition includes at least one of:
the resource pool configured by the device enables directional beam reception based on beam indication;
the RSRP of the device for omni-directional reception is smaller than a second threshold;
the device receives data having a priority above a third threshold.
27. The apparatus of claim 19, wherein the first message is used to indicate that a transmission resource of the third terminal collides with the first resource.
28. The apparatus of claim 27, wherein the first message is sent if a third condition is met, the third condition comprising at least one of:
the beams indicated by the second terminal and the third terminal are not quasi co-located;
the corresponding beams of the beams indicated by the second terminal and the third terminal are not quasi co-located;
the second terminal and the third terminal indicate different transmission beams or beam pairs;
the resources indicated by the third terminal are continuous or identical with the resource time domains indicated by the second terminal;
and the priority of the data sent by the third terminal is lower than that of the data sent by the second terminal.
29. The apparatus of claim 19, wherein the first message is configured to trigger the third terminal to perform a first action, the first action comprising at least one of:
resource reselection;
reselecting the beam;
and (5) packet loss.
30. The apparatus of claim 19, wherein the first message is carried on at least one of: the physical side link feedback channel PSFCH, the radio resource control information RRC, the physical side link data channel PSSCH.
31. The apparatus of claim 19, wherein the second terminal is determined based on at least one of:
indicating a priority of data received by the device;
indicating the measured value RSRP on the receiving resources of the device.
32. The apparatus of claim 19, 20, 23, 24, 26, 29, or 31, wherein the data comprises at least one of: control information, feedback information, target data, reference signals.
33. The apparatus of claim 19, wherein the processing module is configured to determine to communicate using the first beam on the first resource.
34. The apparatus of claim 19, wherein the transmitting module is further configured to transmit a second message to the second terminal, wherein the second message is an acknowledgement message.
35. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the method of any one of claims 1 to 18.
36. A readable storage medium, characterized in that it stores thereon a program or instructions, which when executed by a processor, implement the steps of the method according to any of claims 1 to 18.
CN202210669850.5A 2022-06-14 2022-06-14 Method and terminal for transmitting sidelink data Pending CN117279092A (en)

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CN202210669850.5A CN117279092A (en) 2022-06-14 2022-06-14 Method and terminal for transmitting sidelink data
PCT/CN2023/099832 WO2023241541A1 (en) 2022-06-14 2023-06-13 Sidelink data transmission method and terminal

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KR20180018331A (en) * 2016-08-11 2018-02-21 한국전자통신연구원 Method for supporting mobility in communication system and apparatus for the same
CN110536429B (en) * 2018-08-10 2023-04-18 中兴通讯股份有限公司 Through link beam management method, device, equipment and readable storage medium
AU2018442180B2 (en) * 2018-09-18 2024-08-29 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Communication method and device for sidelink
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