WO2020200137A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2020200137A1
WO2020200137A1 PCT/CN2020/081942 CN2020081942W WO2020200137A1 WO 2020200137 A1 WO2020200137 A1 WO 2020200137A1 CN 2020081942 W CN2020081942 W CN 2020081942W WO 2020200137 A1 WO2020200137 A1 WO 2020200137A1
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WO
WIPO (PCT)
Prior art keywords
terminal
information
retransmission
network
communication
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PCT/CN2020/081942
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English (en)
Chinese (zh)
Inventor
张向东
常俊仁
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华为技术有限公司
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Publication of WO2020200137A1 publication Critical patent/WO2020200137A1/fr

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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
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and device.
  • the vehicle to everything (V2X) terminal of the new radio (NR) can work in the coverage area (in-coverage, IC), or may work in the out-coverage area (OOC).
  • Terminals working in the coverage area have different sidelink resource allocation methods, which can be resources dynamically allocated by the base station (mode1), or they can be based on the resource pool configured by the base station to perceive available resources ( mode2), of course, pre-configured resources can also be used. Terminals working outside the coverage area can use pre-configured resources.
  • the present application provides a communication method and device to avoid resource conflicts with other terminals when using resources for side link data transmission, and to ensure the reliability of side link communication.
  • a communication method includes: a first terminal acquires first information.
  • the first information includes a first partial bandwidth, a first subcarrier interval, a first transmission opportunity, and a first One or more of a retransmission mode; and the first terminal performs data transmission on a side link based on the first information, and the side link is between the first terminal and the second terminal Wireless communication link.
  • the first terminal obtains the first information, the first information obtained by the first terminal is comprehensively determined information, and the first terminal uses the first information to transmit data on the side link, which can avoid communication with other terminals. Resource conflicts ensure the reliability of side link communication.
  • the first terminal acquiring the first information includes: the first terminal receives the first information from the network side device; or, the first terminal receives the first information from the second terminal One information.
  • the method further includes: the first terminal acquiring second information of the second terminal, exemplarily, the second information includes a second portion of bandwidth used by the second terminal, One or more of the second subcarrier interval, the second transmission timing, and the second retransmission mode; and the first terminal acquiring the first information includes: the first terminal determines the location according to the second information ⁇ Said first information.
  • the first terminal obtains the second information of the second terminal, and determines the first information according to the second information, which can avoid resource conflicts with the second terminal and ensure the reliability of side link communication.
  • the acquiring, by the first terminal, the second information of the second terminal includes: the first terminal receives the second information from a network side device; or, the first terminal receives the second information from the The second terminal receives the second information.
  • the method further includes: the first terminal sends third information to the network side device; or the first terminal sends third information to the second terminal; exemplarily, the The third information includes one or more of the third part of the bandwidth used by the first terminal, the third subcarrier interval, the third transmission timing, and the third retransmission mode.
  • the first terminal sends third information to the network-side device or the second terminal, so that the network-side device can determine the first information based on the third information, or the second terminal can determine the first information based on the third information. Therefore, resource conflicts with other terminals can be avoided, and the reliability of side link communication can be guaranteed.
  • the method further includes: the first terminal sends fourth information to the network-side device or the second terminal.
  • the fourth information includes what is monitored by the first terminal Broadcasting information.
  • the first terminal sends the monitored broadcast service information to the network-side device or the second terminal, so that the network-side device or the second terminal can determine the first information based on the fourth information, so as to avoid communication with other terminals. Conflict of resources to ensure the reliability of side link communication.
  • the method further includes: the first terminal monitors the broadcast service information in a predetermined first period.
  • the first terminal is located in a first cell, and the second terminal is located in a second cell, and the method further includes: the first terminal receiving a first message, the first message including the A common configuration of the first cell and the second cell; and the first terminal uses the common configuration to establish a connection with the second terminal.
  • the acquiring, by the first terminal, the second information of the second terminal includes: receiving, by the first terminal, fifth information sent by the second terminal, for example, the fifth information is The broadcast service information monitored by the second terminal in a predetermined second period, where the broadcast service information includes: one of the bandwidth used by the broadcast service, subcarrier spacing, transmission timing, retransmission mode, or Multiple; and the first terminal determines the second information according to the fifth information.
  • the first terminal receives the information of the broadcast service monitored by the second terminal from the second terminal, and determines the information of the second terminal according to the information, The conflict between the broadcast communication performed by the second terminal and the unicast communication can be avoided.
  • the method further includes: the first terminal acquiring sixth information.
  • the sixth information includes the first information used by broadcasting, or the broadcasting service identifier and the first information.
  • a mapping relationship of information; the first terminal determining the first information includes: the first terminal determining the first information according to the sixth information.
  • the first terminal can conveniently determine the first information according to the mapping relationship between the broadcast service identifier and the first information, or according to the indicated first information.
  • the method further includes: the first terminal obtains a pre-configured list.
  • the pre-configured list includes one or more configurations, and the configuration includes partial bandwidth, subcarrier spacing, transmission Timing, one or more parameters in the retransmission mode; the first terminal determines the first information, including: the first terminal determines the first information according to one or more of the broadcast service identifier, the transmission time, and the number of broadcast services.
  • a configuration is determined in the pre-configuration list, and the first information is determined according to the determined configuration.
  • one or more of the above parameters are pre-configured, and when using, one of the configurations is determined, and the receiving terminal can blindly check the data of the sending terminal on the above pre-configuration.
  • the transmission timing is used to indicate one or more of the following timings: the timing when the first terminal sends data to the network, the timing when the first terminal transmits data on the side link, the first The timing when the terminal receives data sent by the network, the timing when the first terminal receives data on the side link, or the flexible timing.
  • the interval between the time when the first terminal sends data to the network and the time when the first terminal sends data on the side link is t, and the t is not equal to zero.
  • the first terminal is a sending device
  • the second terminal is a receiving device
  • the retransmission mode includes feedback-based retransmission and non-feedback-based retransmission.
  • the feedback-based retransmission It means that the sending device needs to determine whether to perform data retransmission based on the feedback of the receiving device; the non-feedback-based retransmission means that the sending device does not need to determine whether to perform data retransmission based on the feedback of the receiving device.
  • a communication method includes: a network-side device generates first information.
  • the first information includes a first portion of bandwidth used by the first terminal, and a first subcarrier interval , The first transmission opportunity, one or more of the first retransmission modes; and the network side device sends the first information to the first terminal.
  • the first information is comprehensively determined, and the first terminal uses the first information to transmit data on the side link, which can avoid resource conflicts with other terminals and ensure Reliability of side link communication.
  • the method further includes: the network-side device receives second information of the second terminal.
  • the second information includes the second part of the bandwidth used by the second terminal, and the second sub One or more of carrier spacing, second transmission opportunity, and second retransmission mode.
  • the method further includes the network side device sending the second information to the first terminal.
  • the method further includes the network side device determining the first information according to the second information, and sending the first information to the first terminal.
  • the method further includes: the network-side device receives third information from the first terminal.
  • the third information includes a third portion of bandwidth used by the first terminal , The third subcarrier interval, the third transmission opportunity, and one or more of the third retransmission mode;
  • the network-side device generating the first information includes: the network-side device generating the first information according to the third information The first information.
  • the first terminal is located in a first cell
  • the second terminal is located in a second cell
  • the method further includes: the network side device sends a first message to the first terminal, as an example Yes, the first message includes the common configuration of the first cell and the second cell.
  • the method further includes: the network-side device sends sixth information to the first terminal.
  • the sixth information includes the first information used for broadcasting, or broadcasting The mapping relationship between the service identifier and the first information.
  • a communication device which can implement the communication method of the first aspect or any one of the foregoing aspects.
  • the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a terminal device.
  • the above method can be implemented by software, hardware, or by hardware executing corresponding software.
  • the structure of the communication device includes a processor and a memory; the processor is configured to support the device to perform the corresponding functions in the foregoing communication method.
  • the memory is used for coupling with the processor, and it stores the necessary programs (instructions) and/or data of the device.
  • the communication device may further include a communication interface for supporting communication between the device and other network elements.
  • the communication device may include a unit module that performs the corresponding function or action in the foregoing method.
  • a processor and a transceiver device are included, the processor is coupled with the transceiver device, and the processor is used to execute a computer program or instruction to control the transceiver device to receive and receive information. Send; when the processor executes the computer program or instruction, the processor is also used to implement the above method.
  • the transceiver device may be a transceiver, a transceiver circuit or an input/output interface.
  • the transceiving device is a transceiving circuit or an input/output interface.
  • the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface.
  • the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.
  • a communication device which can implement the above-mentioned second aspect or any of the communication methods implemented.
  • the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a network device, and the foregoing method may be implemented by software, hardware, or by hardware executing corresponding software.
  • the structure of the communication device includes a processor and a memory; the processor is configured to support the device to perform the corresponding functions in the foregoing communication method.
  • the memory is used to couple with the processor, and it stores the necessary programs (instructions) and data of the device.
  • the communication device may further include a communication interface for supporting communication between the device and other network elements.
  • the communication device may include unit modules that perform corresponding actions in the foregoing method.
  • a processor and a transceiver device are included, the processor is coupled with the transceiver device, and the processor is used to execute a computer program or instruction to control the transceiver device to receive and receive information. Send; when the processor executes the computer program or instruction, the processor is also used to implement the above method.
  • the transceiver device may be a transceiver, a transceiver circuit or an input/output interface.
  • the transceiving device is a transceiving circuit or an input/output interface.
  • the receiving unit may be an input unit, such as an input circuit or a communication interface; the sending unit may be an output unit, such as an output circuit or a communication interface.
  • the receiving unit may be a receiver (also called a receiver); the sending unit may be a transmitter (also called a transmitter).
  • the hardware parts responsible for input and output in the communication device may be integrated.
  • a computer-readable storage medium stores instructions that, when run on a computer, cause the computer to execute the methods described in the above aspects.
  • a computer program product containing instructions which when run on a computer, causes the computer to execute the methods described in the above aspects.
  • a communication system including any one of the aforementioned network device-side communication devices, and/or any one of the terminal-side communication devices.
  • FIG. 1 is a schematic diagram of the architecture of the communication system involved in this application.
  • Figure 2 is a schematic diagram of the E-UTRAN architecture
  • Figure 3 is a schematic diagram of the NG-RAN architecture
  • Figure 5 is a schematic diagram of BWP and /SCS in one carrier
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of an exemplary side link communication scenario
  • FIG. 8 is a schematic diagram of another exemplary side link communication scenario
  • FIG. 9 is a schematic flowchart of yet another communication method provided by an embodiment of this application.
  • FIG. 10 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 11 is a schematic diagram of another exemplary side link communication scenario
  • FIG. 12 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 13 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • Figure 15 is a schematic diagram of an exemplary pre-configured BWP pattern
  • 16 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 17 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 18 is a schematic structural diagram of a simplified terminal device provided by an embodiment of this application.
  • FIG. 19 is a schematic structural diagram of a simplified network side device provided by an embodiment of this application.
  • the architecture of the communication system involved in this application may be as shown in Figure 1.
  • the communication system may include at least one network-side device (only one is shown in the figure), and one or more terminal devices connected to the network-side device.
  • Figure 1 illustrates three V2X terminal devices: UE1, UE2, and UE3.
  • UE1 and UE2 are located within the coverage area of the mobile communication network, and UE3 is located outside the coverage area of the mobile communication network.
  • UE1 can perform mobile network communication with network-side devices, and UE1 can also perform sidelink communication with UE2 and UE3.
  • Sidelink refers to the direct communication link between V2X terminals.
  • the aforementioned network-side device may be a device that can communicate with a terminal device.
  • the network-side device can be any device with wireless transceiver functions. Including but not limited to: base station NodeB, evolved base station eNodeB, base station (gNB) in the fifth generation (5G) communication system, base station or network side equipment in future communication system, and access node in WiFi system , Wireless relay node, wireless backhaul node, etc.
  • the network side device may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the network side device may also be a small station, a transmission reference point (TRP), etc.
  • TRP transmission reference point
  • the above-mentioned terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water, such as on a ship; it can also be deployed In the air, such as airplanes, balloons, and satellites.
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control ( Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and transportation safety
  • Terminal equipment can sometimes be referred to as user equipment (UE), access terminal equipment, UE unit, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, terminal, wireless communication equipment, UE Agent or UE device, etc.
  • E-UTRAN evolved UMTS terrestrial radio access network
  • NG-RAN new generation radio access network
  • An exemplary E-UTRAN overall architecture is shown in Figure 2.
  • E-UTRAN is composed of eNBs and provides UE-oriented E-UTRA user plane and control plane protocol terminals.
  • the eNBs are interconnected through the X2 interface.
  • the eNB is also connected to a mobility management entity (MME) through the S1-MME interface, and connected to a serving gateway (S-GW) through the S1-U interface.
  • MME mobility management entity
  • S-GW serving gateway
  • gNB provides UE-oriented NR user plane and control plane protocol terminals
  • ng-eNB provides UE-oriented E-UTRA user plane and control plane protocol terminals.
  • the gNB and the ng-eNB are interconnected through an Xn interface, and the two are connected to a 5G core network (5 th generation core, 5GC) through an NG interface.
  • 5G core network 5 th generation core, 5GC
  • system and “network” in the embodiments of this application can be used interchangeably.
  • Multiple refers to two or more. In view of this, “multiple” may also be understood as “at least two” in the embodiments of the present application.
  • And/or describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone.
  • This application provides a communication method and device.
  • a first terminal obtains first information, and the first information obtained by the first terminal is negotiated information, and the first terminal uses the first information to transmit data on the side link. It can avoid resource conflicts with other terminals and ensure the reliability of side link communication.
  • FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the application, which is exemplary:
  • the first terminal obtains first information.
  • the first information includes a first bandwidth part (BWP), a first sub-carrier space (SCS), a first transmission opportunity, and a first One or more retransmission modes.
  • the first terminal may be a transmitting terminal in side link communication, or may be a receiving terminal in side link communication.
  • UE1 in the coverage area and UE2 in the coverage area can use mode1 resources or mode2 resources for side link communication;
  • UE1 in the coverage area and UE3 outside the coverage area can use pre-configured resources for side link communication.
  • Communication Whether it is a terminal within the coverage area or a terminal outside the coverage area, when using resources for side link data transmission, it is necessary to avoid resource conflicts with other terminals. Therefore, before performing side link communication, the first terminal obtains available one or more of the following resource information: BWP, SCS, transmission timing, and retransmission mode.
  • the carrier includes BWP1, BWP2, and BWP3; the subcarrier spacing of BWP1 may be SCS1 and SCS4, the subcarrier spacing of BWP2 may be SCS1 to SCS4, and the subcarrier spacing of BWP3 may be SCS1 to SCS4.
  • the SCS in the same BWP can be time-varying, and the duration of an SCS in different BWPs can also be different.
  • the first terminal needs to obtain the available BWP and SCS before performing side link communication.
  • the transmission timing is used to indicate one or more of the following timings: when the first terminal sends data to the network, when the first terminal sends data on the side link, and the first terminal receives data sent by the network
  • the timing for the first terminal to receive data on the side link or flexible timing.
  • the so-called flexible timing means that the timing can be flexibly configured as the timing when the first terminal sends data to the network, the timing when the first terminal sends data on the side link, the timing or the first terminal when the first terminal receives data sent by the network Any of the timings when a terminal receives data on the side link.
  • the timing may be an absolute moment, such as indicating that a certain absolute moment is used for the first terminal to send data to the network, or the first terminal sends data on the side link, or the first terminal receives data sent by the network, or The terminal receives data on the side link;
  • the timing may also be a subframe (subframe), such as indicating that a certain or some subframes are used for the first terminal to send data to the network, or for the first terminal to be on the side link
  • Data is sent on the Internet, or used for the first terminal to receive data sent by the network, or for the first terminal to receive data on the side link;
  • the timing may also be a slot, such as indicating a certain or certain time The slot is used for the first terminal to send data to the network, or for the first terminal to send data on the side link, or for the first terminal to receive data sent by the network, or for the first terminal to receive data on the side link ;
  • the timing may also be a symbol, such as indicating that a certain or some symbols are used
  • the first terminal Before performing side link communication, the first terminal needs to determine the above transmission timing and obtain the indication information about the above transmission timing.
  • the interval between the time when the first terminal sends data to the network and the time when the first terminal sends data on the side link is t, and the t is not equal to zero.
  • the retransmission mode includes feedback-based retransmission and non-feedback-based retransmission.
  • Feedback-based retransmission means that the sending device needs to determine whether to retransmit data based on the feedback of the receiving device. For example, the existing hybrid automatic repeat request (HARQ), if the receiving device feedbacks the correct response (acknowledgement, ACK) ), the sending device does not retransmit the previously sent data; if the terminal device feeds back an error response (non-acknowledgement, NACK), the sending device retransmits the previously sent data.
  • HARQ hybrid automatic repeat request
  • non-feedback-based retransmission means that the sending device does not need to determine whether to retransmit data based on the feedback of the receiving device. For example, when transmitting new data, it directly sends the data that needs to be transmitted multiple times instead of Need to care about whether the receiving device receives the transmitted data.
  • the retransmission mode also includes a mixed mode, that is, the above-mentioned mixed mode of feedback-based retransmission and non-feedback-based retransmission.
  • feedback-based retransmission is used for newly transmitted data
  • non-retransmission-based retransmission is used for retransmitted data.
  • Retransmission of feedback That is, when the sending device sends new data, it needs to wait for feedback from the receiving device, the receiving device feeds back ACK, and the sending device does not retransmit the sent data; the receiving device feeds back NACK, and the sending device needs to retransmit the sent data.
  • the receiving device retransmits the sent data, it no longer waits for feedback from the receiving device, but directly sends multiple retransmitted data.
  • use non-feedback-based retransmission for newly transmitted data and use feedback-based retransmission for retransmitted data.
  • the first terminal Before performing side link communication, the first terminal needs to determine the above retransmission mode, and obtain the indication information about the above retransmission mode.
  • the network side device may configure the first terminal through radio resource control (radio resource control, RRC) signaling, downlink control information (DCI), or system message, and specify an exemplary retransmission mode .
  • RRC radio resource control
  • DCI downlink control information
  • the network device may configure the transmission mode to the first terminal in an implicit or explicit manner.
  • the so-called explicit method for example, the network directly tells the first terminal device which feedback-based retransmission, non-feedback-based retransmission, or hybrid mode to use.
  • the so-called implicit method for example, when the network allocates new transmission resources to the terminal device (resources for new data transmission), if multiple resources are allocated for the transmission of the new data transmission, it is considered to configure the first terminal device to perform Non-feedback-based retransmission; otherwise, if the network only configures one resource for sending newly transmitted data, it is considered that the first terminal device is configured to perform feedback-based retransmission.
  • the terminal device can determine independently, for example, based on the current service.
  • non-feedback-based retransmission can be used, and for services with insensitive delay requirements, feedback-based retransmission can be used; or , For services with low reliability requirements, use non-feedback-based retransmission, and for services with high reliability requirements, use feedback-based retransmission.
  • the second terminal may send the first information to the first terminal, and the first terminal may receive the first information.
  • the second terminal serves as a unicast receiving device to receive data sent by the first terminal, and the second terminal can inform the first terminal of the first information.
  • the first information includes the aforementioned BWP, SCS, transmission timing, One or more of the retransmission modes.
  • the first terminal is informed about the relevant parameters that the second terminal expects the first terminal device to use, such as partial bandwidth, sub-carrier spacing, transmission timing, or retransmission mode.
  • this implementation is not limited to a unicast scenario, but may also be a broadcast or multicast scenario.
  • the network side device may send the first information to the first terminal, and the first terminal receives the first information.
  • the first terminal serves as the sending terminal, and the network device can determine the configuration information used by the first terminal to send the broadcast according to the configuration information used when the second terminal sends the broadcast, and use the first information to determine the A terminal device sends configuration information used for broadcasting to the first terminal, where the first information includes one or more of the foregoing BWP, SCS, transmission timing, and retransmission mode.
  • this implementation is not limited to broadcast scenarios, and can also be unicast or multicast scenarios, or a combination of broadcast, unicast, and multicast scenarios.
  • the above-mentioned second terminal may specifically refer to a specific device, or may not specifically refer to a specific device, but generally refers to one or more other terminal devices other than the first terminal.
  • the first terminal performs data transmission on a side link based on the first information, and the side link is a wireless communication link between the first terminal and the second terminal.
  • the first terminal after the first terminal obtains the above-mentioned clear indication information about one or more of BWP, SCS, transmission timing, and retransmission mode, it performs data transmission on the side link based on the information, which can avoid communication with The resource conflicts of other terminals ensure the reliability of side link communication.
  • the transmission data refers to the sending and receiving of data, that is, it may be sending data or receiving data.
  • the first terminal obtains first information, which may be comprehensively determined information, for example, the first terminal determines by combining the configuration information used by the first terminal itself and the second terminal device The first information of the first terminal, or the first information used by the network device combined with the configuration information used by the first terminal and the second terminal device to determine and tell the first terminal, the first terminal uses the first information to transmit data on the side link, Can avoid resource conflicts with other terminals.
  • first information which may be comprehensively determined information, for example, the first terminal determines by combining the configuration information used by the first terminal itself and the second terminal device
  • the first information of the first terminal, or the first information used by the network device combined with the configuration information used by the first terminal and the second terminal device to determine and tell the first terminal the first terminal uses the first information to transmit data on the side link, Can avoid resource conflicts with other terminals.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the application, which is exemplary:
  • the first terminal sends third information to a network side device.
  • the network side device receives the third information.
  • the first terminal needs to communicate with the second terminal on the side link, and the first terminal may also be communicating with other terminals on the side link.
  • the first terminal can only communicate at the same time. Only one type of SCS can be used for receiving and sending on a BWP. Take SCS as an example. If two sending terminals use different SCSs to send data to one receiving terminal at the same time, then the receiving terminal can only select the data of one sending terminal to receive, which causes waste and wastes the sending terminal’s data. Power consumption also wastes resources. The same problem exists regarding the use of BWP, transmission timing, retransmission mode, etc.
  • the first terminal may send third information to the network-side device to inform the network-side device that it uses the third part of the bandwidth for communicating with other terminals, the third subcarrier interval, the third transmission timing, and the third One or more of the retransmission modes.
  • the first terminal may also send the foregoing third information to the second terminal, so that the second terminal avoids conflicts with resources in the foregoing third information when acquiring resources.
  • the above third information may be configuration information that the first terminal is using for side link communication with other terminal devices, or it may be configuration information that the first terminal is about to use or plan to use for side link communication with other terminals.
  • the configuration information here may include one or more of partial bandwidth, sub-carrier spacing, transmission timing, or retransmission mode.
  • S202 The network side device sends first information to the first terminal.
  • the first terminal receives the first information.
  • the network side device configures the first information according to the third information when configuring the first information.
  • the first part of the bandwidth, the first subcarrier interval, the first transmission opportunity, and the first retransmission mode included in the first information are configured with the third part of the bandwidth, the third subcarrier interval, and the third information included in the third information.
  • the third transmission timing and the third retransmission mode are different to avoid conflicts.
  • the first part of the bandwidth, the first subcarrier interval, the first transmission opportunity, and the first retransmission mode included in the first information can also be the same as the third part of the bandwidth, the third subcarrier interval, and the third information included in the third information.
  • the third transmission timing and the third retransmission mode are the same.
  • the service 1 being performed by the first terminal uses the subcarrier spacing SCS1.
  • the network side device configures the subcarriers for the first terminal
  • the interval SCS1 (included in the first information) allows the first terminal device to use the subcarrier interval SCS1 to process the upcoming service 2.
  • Other parameters such as partial bandwidth, transmission timing, retransmission mode, etc., are similar.
  • this application does not limit the first part of the bandwidth included in the first information, the first subcarrier interval, the first transmission timing, the first retransmission mode, and the third part of the bandwidth included in the third information, the third subcarrier
  • the interval, the third transmission opportunity, and the third retransmission mode are the same or different.
  • step S201 can be replaced with: the first terminal sends the aforementioned third information to the second terminal.
  • step S202 can be replaced with: after the second terminal receives the aforementioned third information, the second terminal generates the aforementioned first information according to the third information. A message, the second terminal sends the first message to the first terminal.
  • the first terminal performs data transmission on the side link based on the first information.
  • the network side device avoids resource conflicts when configuring the first information, when the first terminal performs data transmission on the side link based on the first information, the reliability of communication can be ensured.
  • FIG. 7 A schematic diagram of a side link communication scenario is shown in Figure 7.
  • the first terminal in the coverage and connected state uses mode1 resources to communicate with the second terminal, it also uses mode2 resources and the second terminal.
  • mode1 resources For three-terminal communication, there will be a problem of BWP mismatch, because the BWP where the resources of mode2 are located may be different or not overlap with the BWP where the resources of mode1 are located.
  • the first terminal sends the aforementioned third information to the network-side device, and the first terminal feeds back the information of the mode2 resource pool it is using to the network-side device, so that the network-side device is scheduling the mode1 resource for communicating with the second terminal (Configure the first information), avoid the time when the first terminal communicates with the third terminal (for example, if the BWP1 used by the first terminal to communicate with the second terminal is different from the BWP2 used by the first terminal and the third terminal) , Or schedule the mode1 resource for the first terminal and the second terminal to communicate on the BWP between the first terminal and the third terminal (for example, the BWP1 used by the first terminal and the second terminal to communicate with the first terminal and the third terminal) The same BWP2 used for communication).
  • the first terminal and the second terminal perform side-link communication based on the first information, it can avoid conflicts with the information of the mode2 resource pool being used by the first terminal, and ensure the reliability of the side-link communication with the second terminal
  • the first terminal may also feed back information about the mode1 resource used by the first terminal to the third terminal, so that the third terminal can switch to the BWP that the first terminal communicates with the second terminal together with the first terminal, and use the BWP Perceive or compete for resources in mode2.
  • BWP bandwidth
  • other parameters such as subcarrier spacing, transmission timing, or retransmission mode
  • the description using BWP as an example may also apply to other parameters.
  • FIG. 8 is a schematic diagram of another side link communication scenario.
  • a second terminal outside the coverage area communicates with a first terminal within the coverage area, regardless of whether the first terminal within the coverage area is located.
  • There may be problems in connected state or unconnected state because the pre-configured BWP, SCS, transmission timing, retransmission mode outside the coverage area and the BWP, SCS, transmission timing, and retransmission mode used by the first terminal in the coverage area may be different .
  • the first terminal periodically monitors the pre-configured resources to complete the discovery and connection establishment of the second terminal.
  • the monitoring period can be pre-configured or configured by the network side device, including the monitoring period and the duration of each monitoring.
  • the second terminal uses a pre-configured resource
  • the first terminal sends the above-mentioned third information to the network-side device to inform the network-side device of the BWP, SCS, transmission timing, retransmission mode, etc. that the first terminal will use to communicate with the second terminal, so that the network is giving the first terminal device
  • mode1 or mode2 resources are allocated, conflicts with BWP, SCS, transmission timing, or retransmission mode to be used by the first terminal device and the second terminal device can be avoided.
  • the first terminal may also send the aforementioned third information to the second terminal to inform the first terminal device of the BWP, SCS, and transmission timing used when communicating with other devices other than the second terminal device using resources in the coverage. And retransmission mode, so that when the second terminal sends data to the first terminal or monitors the data sent by the first terminal, it can avoid the moment when the first terminal communicates with other terminal devices in the coverage area, and avoid unnecessary Receive or send.
  • the network side device After the first terminal sends the foregoing third information to the network side device, the network side device sends the first information to the first terminal.
  • the first information includes one or more of the first partial bandwidth, the first subcarrier interval, the first transmission opportunity, and the first retransmission mode.
  • the network-side device may configure the above-mentioned first information and configure the location of the first terminal.
  • the first part of the bandwidth used, the first subcarrier interval, the first transmission opportunity, the first retransmission mode and the second part of the bandwidth used by the second terminal, the second subcarrier interval, the second transmission opportunity, and the second retransmission The pattern is the same.
  • the network side device schedules the resources of mode1 for communication between the first terminal device and other terminal devices, it can avoid the time when the first terminal device communicates with the second terminal device indicated in the third information, so that the first terminal device can Simultaneously receive data sent by a second terminal device outside the coverage, and receive data sent by other terminal devices in the coverage, or so that the first terminal device can simultaneously send data to the second terminal device outside the coverage and send data to the second terminal device outside the coverage.
  • Other terminal devices send data.
  • the first terminal obtains first information, which is comprehensively determined information, and the first terminal uses the first information to transmit data on the side link, which can avoid communication with other terminals. Resource conflicts.
  • FIG. 9 is a schematic flowchart of another communication method provided by an embodiment of the application, which is exemplary:
  • the first terminal monitors broadcast service information in a predetermined first period.
  • the first terminal can only send and receive on one BWP at the same time, and can only use one SCS to send and receive at the same time, then the first terminal monitors whether there are other terminals before sending or receiving a broadcast service The device is already sending or receiving the same broadcast.
  • S302 The first terminal sends fourth information to the network side device.
  • the network side device receives the foregoing fourth information.
  • the first terminal needs to choose to perform broadcast service data transmission on the same BWP of other terminal devices that have already sent or received the broadcast service.
  • the fourth information includes broadcast service information monitored by the first terminal. That is, when the first terminal monitors the broadcast service of interest, it can inform the network-side device of the broadcast service information that it has monitored, so that the network-side device knows that other terminal devices are also transmitting the broadcast service, and need to avoid any communication with the broadcast service. Resources conflict.
  • the first terminal may also send the fourth information to the second terminal.
  • the second terminal receives the fourth information.
  • the network side device sends the first information to the first terminal.
  • the first terminal receives the first information.
  • the network side device may generate the first information according to the fourth information.
  • step S302 the first terminal may also send the fourth information to the second terminal, and the second terminal generates the first information according to the fourth information, then step S303 may be the second The terminal sends the first information to the first terminal, and the first terminal receives the first information.
  • step S303 For the specific implementation of step S303, refer to step S101 of the embodiment shown in FIG. 4.
  • the first terminal may not perform the above steps S302 and S303, but acquire the first information according to the fourth information. .
  • the first terminal if the first terminal is a sending end device, it is necessary to determine the first information used by the first terminal, that is, to coordinate the resources used by the first terminal. If the first terminal is in a disconnected state, the first terminal can select the BWP sent by the broadcast service according to the configuration or pre-configuration of the system message. Of course, this solution can also be used when the first terminal is in the connected state. In addition, if the first terminal is in the connected state, before sending the broadcast service, the first terminal can first monitor the transmission status of the nearby broadcast service, and tell the network side device the broadcast service transmission status it has monitored. For example, whether a certain or certain broadcast services are monitored, and the BWP and/or SCS list of the monitored broadcast services.
  • the network side device instructs the first terminal to send the BWP and/or SCS information of the specific broadcast service.
  • the first terminal monitors the sending status of the broadcast service and reports the monitored broadcast service status to the network side device, which may be performed periodically.
  • the period may be configured by the network device, for example, configured by RRC signaling, DCI and other dedicated signaling, messages, or system messages.
  • the above period may be pre-configured.
  • the first terminal reports the broadcast service monitoring status to the network side device, either by using RRC dedicated signaling or terminal assistance information (UEAssistanceInformation).
  • the first terminal in the non-connected state can specifically establish an RRC connection in order to report the above information.
  • the first terminal can use the RRC connection establishment message, such as random access message 3 or message 4, to broadcast the detected The business information is told to the network side equipment.
  • the first terminal that is already broadcasting can adjust relevant parameters used by itself. For example, you can periodically monitor whether other terminal devices are also sending the same broadcast service, if so, and the frequency position of the BWP you use is higher/lower than the BWP used by other terminal devices to send the same broadcast service If the frequency position is higher, adjust the BWP you use to ensure that it uses the same BWP as other terminal devices. In this case, the first terminal can select the BWP by itself before sending the broadcast service, and then perform BWP coordination in the subsequent broadcast process.
  • the first terminal is a receiving end device, it is also necessary to determine the first information used by the first terminal, that is, to coordinate the resources used by the first terminal.
  • the first terminal regularly monitors the broadcast service it is interested in within the entire carrier bandwidth, and obtains the information of the broadcast service, such as the BWP where the broadcast service is located and/or the period of the broadcast service, and informs the relevant nodes of this information, such as: tell the scheduler
  • the network-side device of mode1 resource so that the network-side device can schedule the mode1 resource to the BWP of the first terminal to receive the broadcast service at the time when the first terminal receives the broadcast service; or tell it to use the pre-configured resource or the mode2 resource in the system message
  • the communication peer device avoids communicating with the first terminal or switches to the BWP where the first terminal receives the broadcast service to communicate.
  • the method for the first terminal to tell the communication peer device is as follows:
  • the first terminal communicates with the second terminal using the mode1 resource scheduled by the network side device, the first terminal already has a link with the third terminal or the fourth terminal (that is, the first terminal can communicate with the third terminal/fourth terminal).
  • Terminal sends data), then, after the first terminal determines the BWP and/or SCS to communicate with the second terminal, it sends the BWP and/or SCS information used by the first terminal to communicate with the second terminal to the third terminal/fourth terminal.
  • the terminal sends data), first establish a link with the third terminal or the fourth terminal, and then send the BWP and/or SCS information used by the first terminal to communicate with the second terminal to the third/fourth terminal. For example, when the first terminal uses the mode1 resource scheduled by the network side device and the second terminal, the first terminal periodically discovers other terminal devices, such as the third terminal or the second terminal, on the resource configured by the system message or on the pre-configured resource.
  • the fourth terminal then establishes a connection with the third terminal/fourth terminal (the process of establishing the connection is handled separately), and then sends the BWP and/or SCS information used by the first terminal to communicate with the second terminal to the third terminal through unicast.
  • Terminal/fourth terminal the first terminal broadcasts and transmits the BWP/or SCS used by the first terminal and other terminal devices to communicate with other terminal devices using mode 1 on the resource configured by the system message or on the pre-configured resource.
  • the first terminal performs data transmission on the side link based on the first information.
  • step S304 refer to step S102 of the embodiment shown in FIG. 4.
  • the first terminal in a broadcast scenario, if the first terminal detects that other terminal devices are sending the same broadcast service, it will notify the network side of the resource information used by other terminal devices to send the broadcast service. Device, so that the network side device uses the same resources as other terminal devices when configuring the first information for the first terminal to avoid resource conflicts and ensure the reliability of side link communication.
  • FIG. 10 is a schematic flowchart of another communication method provided by an embodiment of this application, which is exemplary:
  • S401 The network side device sends a first message to the first terminal.
  • the first terminal receives the first message.
  • FIG. 11 another schematic diagram of side link communication.
  • the first terminal is located in the first cell (as shown in FIG. In cell 1) shown in 11
  • the second terminal is located in the second cell (cell 2 shown in FIG. 11). If the common configurations of the two cells are different, there will be problems in communication between the two terminal devices.
  • the network-side device may send a first message to the first terminal.
  • the first message includes the common configuration of the first cell and the second cell, and the common configuration includes partial bandwidth information.
  • the network side device may send the above-mentioned public configuration through a system message; when the first terminal is in a connected state, the network side device may send the above-mentioned public configuration through RRC signaling or DCI message.
  • the first terminal uses the public configuration to establish a connection with the second terminal.
  • the first terminal After receiving the above-mentioned public configuration, the first terminal can complete the discovery of the second terminal on the public BWP and establish a connection with the second terminal.
  • S403 The second terminal sends second information to the first terminal.
  • the first terminal receives the second information.
  • the second terminal informs the first terminal of the BWP used by the second terminal to communicate with other terminal devices in the second cell, so that when the first terminal communicates with the second terminal on the side link, The moment when the second terminal communicates with other terminal devices in the second cell (transmission timing) can be avoided, or the first terminal can be adjusted to communicate with the second terminal on the BWP where the second terminal communicates with other terminal devices in the second cell.
  • the terminal communicates.
  • the second terminal sends second information to the first terminal.
  • the second information includes the second part of the bandwidth used by the second terminal, the second subcarrier interval, the second transmission timing, and the second retransmission mode.
  • the second information includes the second part of the bandwidth used by the second terminal, the second subcarrier interval, the second transmission timing, and the second retransmission mode.
  • the network side device may also send the second information to the first terminal.
  • S404 The first terminal determines the first information according to the second information.
  • the first terminal may determine the first information according to the second information.
  • the first information includes one or more of the first part of the bandwidth used by the first terminal, the first subcarrier interval, the first transmission timing, and the first retransmission mode.
  • the first part of the bandwidth used by the first terminal is different from the second part of the bandwidth used by the second terminal, and the first subcarrier interval used by the first terminal is different from the second subcarrier interval used by the second terminal, so as to avoid the difference between The two terminals conflict; the first terminal and the second terminal adopt the same transmission timing and retransmission mode to ensure normal communication on the side link.
  • the first terminal performs data transmission on the side link based on the first information.
  • the first terminal After determining the first information, the first terminal performs data transmission on the side link based on the first information, which can avoid resource conflicts with the second terminal and ensure communication reliability.
  • the first terminal determines the first information used by itself according to the second information used by the second terminal, which can avoid resource conflicts with the second terminal and ensure the reliability of communication.
  • the second terminal is interested in a certain broadcast service, how to coordinate the unicast communication and the reception of the broadcast service to avoid interruption to the ongoing unicast communication.
  • FIG. 12 is a schematic flowchart of another communication method provided by an embodiment of the application, which is exemplary:
  • the second terminal sends fifth information to the first terminal.
  • the first terminal receives the fifth information.
  • the second terminal and the first terminal are performing unicast communication, and at the same time, the second terminal searches for broadcast services of interest.
  • a second period can be set, the second period can be the maximum search period T, and the search duration can also be set.
  • the second terminal may choose to search in a period less than or equal to T, and the search duration is the aforementioned search duration.
  • the second period and search duration may be determined by the second terminal itself and notified to the network side device; or the network side device may configure the second terminal with the above second period and search duration.
  • the second terminal monitors the broadcast service information in the predetermined second period and sends it to the first terminal.
  • the second terminal sends fifth information to the first terminal.
  • the fifth information is broadcast service information monitored by the second terminal in a predetermined second period, and the broadcast service information includes: broadcast One or more of the partial bandwidth used by the service, subcarrier spacing, transmission timing, and retransmission mode.
  • the second terminal can also obtain periodic information of the broadcasting service of interest.
  • the fifth information may also include the search period T and the search duration.
  • the first terminal device can determine the second information in combination with the time when the second terminal device searches.
  • S502 The first terminal determines second information according to the fifth information.
  • the first terminal may determine the second information according to the fifth information received above.
  • the second information includes the second part of the bandwidth used by the second terminal, the second subcarrier interval, the second transmission timing, and the second repetition.
  • the first terminal determines the second information used by the second terminal for broadcasting service reception and unicast communication with the first terminal according to the above fifth information.
  • S503 The first terminal determines the first information according to the second information.
  • the first terminal and the second terminal perform unicast communication, and resource conflicts with the second terminal need to be avoided.
  • the first terminal determines the first information according to the second information used by the second terminal.
  • the first information includes one or more of the first partial bandwidth, the first subcarrier interval, the first transmission opportunity, and the first retransmission mode.
  • the first part of the bandwidth, the first subcarrier interval, the first transmission timing, and the first retransmission mode can be respectively the same as the BWP, SCS, transmission timing, and retransmission mode used by the broadcast service monitored by the second terminal.
  • the first terminal jumps to the BWP where the second terminal will receive the broadcast service to continue unicast communication.
  • the first part of the bandwidth, the first subcarrier interval, the first transmission timing, and the first retransmission mode may also be different from the BWP, SCS, transmission timing, and retransmission mode used by the broadcast service monitored by the second terminal, then The first terminal needs to interrupt unicast communication on the current BWP.
  • S504 The first terminal performs data transmission on the side link based on the first information.
  • the first terminal will perform unicast communication with the second terminal on the side link based on the first information determined above, which also avoids The unicast communication conflicts with the broadcast service received by the second terminal.
  • the second terminal performing unicast communication with the first terminal is to receive broadcast services at the same time, when determining the first information, it is necessary to avoid conflicts with the above-mentioned receiving broadcast service information, To ensure the reliability of side link communication.
  • FIG. 13 is a schematic flowchart of another communication method provided by an embodiment of the application, which is exemplary:
  • the network side device sends sixth information to the first terminal.
  • the first terminal receives the sixth information.
  • the network side device may pre-configure one or more mapping relationships between broadcast services and the first information, and exemplarily configure one or more mapping relationships between broadcast service identifiers and the first information.
  • the network side device may send the above-mentioned sixth information through a system message.
  • the sixth information includes first information used in broadcasting, or a mapping relationship between a broadcasting service identifier and the first information.
  • the first information used in broadcast refers to the first information used in a specific broadcast.
  • the first information includes the first BWP, the first SCS, the first transmission opportunity, and the first retransmission mode.
  • One or more; the foregoing mapping relationship refers to a mapping relationship between one or more broadcast service identifiers and the first information.
  • the sixth information is not limited to include the first information corresponding to the broadcast service, and may also be the first information corresponding to the unicast or multicast service.
  • the network side device may send the above sixth information through dedicated signaling, such as RRC signaling or DCI message.
  • the network side device may preconfigure the mapping relationship between the broadcast service identifier and the first information, or preconfigure the first information used for a certain broadcast.
  • the first terminal determines first information according to the sixth information.
  • the first terminal may determine that the first information used for broadcasting is the first information according to the sixth information.
  • the first terminal may determine the first information corresponding to the broadcast service identifier according to the broadcast service identifier.
  • S603 The first terminal performs data transmission on the side link based on the first information.
  • the first terminal can clearly determine the first information through the mapping relationship between the broadcast service identifier and the first information, or the specific first information used for broadcast indicated, and the first terminal uses The first information transmits data on the side link, which can avoid resource conflicts with other terminals and ensure the reliability of side link communication.
  • FIG. 14 is a schematic flowchart of another communication method provided by an embodiment of the application, which can be applied to a scenario where a first terminal can simultaneously use one or more SCSs on one or more BWPs to send and receive data.
  • the method :
  • S701 The first terminal obtains a pre-configuration list.
  • the transmission of the broadcast service is known to all relevant UEs.
  • This embodiment sets a pre-configured list.
  • the pre-configured list includes one or more configurations.
  • the configuration is used to indicate one or more parameters in partial bandwidth, sub-carrier spacing, transmission timing, and retransmission mode.
  • BWP information for broadcast services may be pre-configured.
  • all BWPs configured can be used for broadcast services, or some BWPs can be used for broadcast services, or some BWPs can be used for specific broadcast services (such as the association of BWP identifiers and broadcast service identifiers), or specific BWPs can be used for specific collections
  • the UE (for example, divided by UE ID) broadcasts a specific broadcast service.
  • the network-side equipment can define system-level BWP information, which is used for broadcast services.
  • all BWPs can be used for broadcast services, or part of BWPs can be used for broadcast services. Used for broadcast services, or part of the BWP can be used for specific broadcast services (for example, the BWP identifier is associated with the broadcast service identifier).
  • FIG. 15 it is a schematic diagram of a pre-configured pattern of BWP, and N BWP patterns are configured from BWP1 to BWPN.
  • N BWP patterns are configured from BWP1 to BWPN.
  • the resources pre-configured for UEs outside the coverage area are divided into N BWPs and set to different patterns; for another example, for the mode1 resource configuration mode, the resource pool
  • the configurable BWP is divided into N BWPs, which are set to different patterns.
  • any one of these N patterns can be used for broadcasting service.
  • the first terminal determines a configuration in the pre-configuration list according to one or more of the broadcast service identifier, the transmission time, and the number of broadcast services, and determines the first information according to the determined configuration.
  • the first terminal in the coverage area After the first terminal in the coverage area obtains the BWP configuration information related to the broadcast service of mode 2 or the BWP information related to the broadcast service on the pre-configured resource, or the first terminal outside the coverage area obtains the BWP configuration information on the pre-configured resource After the BWP information related to the broadcast service, it is determined to receive the BWP of the specific broadcast service at a specific time.
  • one or more parameters in the broadcast service identifier, the time when the broadcast service is sent, the number of broadcast services sent, and the identification of the terminal device that sends the broadcast service can be used to determine one of the above-mentioned pre-configurations.
  • the configuration configuration is used to indicate one or more parameters of partial bandwidth, subcarrier spacing, transmission timing, and retransmission mode, so that the first information can be determined according to the determined configuration.
  • the specific broadcast BWP of the specific UE is fixed.
  • a specific BWP can be determined according to the broadcast service identifier, the number of BWPs, and the identifier of the first terminal that sends the broadcast service. .
  • the network side device can dynamically schedule the first terminal to receive a specific broadcast service sent by a specific UE on a specific BWP at a specific time.
  • the BWP information, broadcast service information, and time information for receiving the broadcast service are indicated through the DCI, and the UE information for sending the broadcast service; similarly, the network side device can dynamically control the sending of the BWP for the UE to send the broadcast service.
  • the terminal equipment outside the coverage area adopts the pre-configured BWP pattern as shown in FIG. 10, that is, the UE outside the coverage area can hop frequency and broadcast, and calculate this time according to the broadcast identifier, transmission time and BWP number. Broadcast on which BWP.
  • frequency hopping can be used to search all BWPs shown in FIG. 15; the first terminal can also calculate which BWP to search for according to the above calculation method.
  • S703 The first terminal performs data transmission on the side link based on the first information.
  • the first terminal After the first terminal searches for the BWP that sends the broadcast service, it receives the data sent by the sending terminal on the BWP.
  • the first terminal obtains a pre-configured list of resources, determines an exemplary resource configuration according to relevant parameters of a specific broadcast service, and performs side link communication according to the resource configuration, which can avoid Produce resource conflicts with other terminals to ensure the reliability of side link communication.
  • an embodiment of the present application also provides a communication device 100, which can be applied to the foregoing FIG. 4, FIG. 6, FIG. 9, and FIG. 10. , In the communication method shown in Figure 12 to Figure 14.
  • the communication device 100 may be a terminal device as shown in FIG. 1 or a component (such as a chip) applied to the terminal device.
  • the communication device 100 includes a processing unit 11 and a transceiving unit 12; exemplary:
  • the processing unit 11 is configured to obtain first information, where the first information includes one or more of a first partial bandwidth, a first subcarrier interval, a first transmission opportunity, and a first retransmission mode;
  • the transceiver unit 12 is configured to perform data transmission on a side link based on the first information, and the side link is a wireless communication link between the first terminal and the second terminal.
  • the transceiver unit 12 is further configured to receive the first information from the network side device; or,
  • the transceiver unit 12 is further configured to receive the first information from the second terminal.
  • the processing unit 11 is further configured to obtain second information of the second terminal, where the second information includes the second part of the bandwidth used by the second terminal, and the second subcarrier interval , The second transmission opportunity, one or more of the second retransmission modes;
  • the processing unit 11 is further configured to determine the first information according to the second information.
  • the transceiving unit 12 is further configured to receive the second information from the network side device; or,
  • the transceiver unit 12 is further configured to receive the second information from the second terminal.
  • the transceiving unit 12 is further configured to send third information to the network side device; or
  • the transceiver unit 12 is further configured to send third information to the second terminal;
  • the third information includes one or more of the third partial bandwidth used by the first terminal, the third subcarrier interval, the third transmission timing, and the third retransmission mode.
  • the first terminal is located in a first cell, and the second terminal is located in a second cell;
  • the transceiver unit 12 is also configured to receive a first message, the first message including the common configuration of the first cell and the second cell;
  • the transceiver unit 12 is further configured to use the common configuration to establish a connection with the second terminal.
  • the transceiving unit 12 is further configured to receive fifth information sent by the second terminal, where the fifth information is a broadcast service monitored by the second terminal in a predetermined second period
  • the information of the broadcast service includes: one or more of part of the bandwidth used by the broadcast service, subcarrier spacing, transmission timing, and retransmission mode;
  • the processing unit 11 is further configured to determine the second information according to the fifth information.
  • processing unit 11 is further configured to obtain sixth information, where the sixth information includes the first information used in broadcasting, or the mapping relationship between the broadcasting service identifier and the first information ;
  • the processing unit 11 is further configured to determine the first information according to the sixth information.
  • the processing unit 11 is further configured to obtain a pre-configuration list, where the pre-configuration list includes one or more configurations, and the configuration is used to indicate partial bandwidth, subcarrier spacing, transmission timing, and reconfiguration One or more parameters of the transmission mode;
  • the processing unit 11 is further configured to determine a configuration according to one or more of the broadcast service identifier, the transmission time, and the number of broadcast services, and determine the first information according to the determined configuration.
  • the transmission timing is used to indicate one or more of the following timings: the timing when the first terminal sends data to the network, the timing when the first terminal transmits data on the side link, the first The timing when the terminal receives data sent by the network, the timing when the first terminal receives data on the side link, or the flexible timing.
  • the interval between the time when the first terminal sends data to the network and the time when the first terminal sends data on the side link is t, and the t is not equal to zero.
  • the first terminal is a sending device
  • the second terminal is a receiving device
  • the retransmission mode includes feedback-based retransmission and non-feedback-based retransmission.
  • the feedback-based retransmission It means that the sending device needs to determine whether to perform data retransmission based on the feedback of the receiving device; the non-feedback-based retransmission means that the sending device does not need to determine whether to perform data retransmission based on the feedback of the receiving device.
  • transceiver unit may be an integrated device with transceiver function, or it may be composed of an independent receiving unit with receiving function and a transmitting unit with transmitting function, logically called "transceiving unit" .
  • the communication device acquires first information, and the acquired first information is comprehensively determined information.
  • the communication device uses the first information to transmit data on the side link, which can avoid communication with The resource conflicts of other terminals ensure the reliability of side link communication.
  • an embodiment of the present application also provides a communication device 200, which can be applied to the foregoing FIG. 4, FIG. 6, FIG. 9, and FIG. 10. , In the communication method shown in Figure 12 to Figure 14.
  • the communication device 200 may be a network-side device as shown in FIG. 1 or a component (such as a chip) applied to the network-side device.
  • the communication device 200 includes a processing unit 21 and a transceiving unit 22; exemplary:
  • the processing unit 21 is configured to generate first information, where the first information includes one of the first part of the bandwidth used by the first terminal, the first subcarrier interval, the first transmission timing, the first retransmission mode, or Multiple
  • the transceiver unit 22 is configured to send the first information to the first terminal.
  • the transceiving unit 22 is further configured to receive second information of the second terminal, where the second information includes the second part of the bandwidth used by the second terminal, the second subcarrier interval, and the second Transmission timing, one or more of the second retransmission modes.
  • the transceiver unit 22 is further configured to receive third information from the first terminal, where the third information includes a third part of the bandwidth used by the first terminal, and the third subcarrier One or more of the interval, the third transmission opportunity, and the third retransmission mode.
  • the first terminal is located in a first cell, and the second terminal is located in a second cell; the transceiving unit 22 is further configured to send a first message to the first terminal, where the first terminal is A message includes the common configuration of the first cell and the second cell.
  • the transceiving unit 22 is further configured to send sixth information to the first terminal, where the sixth information includes the first information used in broadcasting, or the broadcasting service identifier and the The mapping relationship of the first information.
  • transceiver unit 22 may be an integrated device with transceiver function, or it may be composed of an independent receiving unit with receiving function and a transmitting unit with transmitting function, logically called "transceiving unit" .
  • the communication device sends first information to a first terminal, and the first information is comprehensively determined information, so that the first terminal uses the first information to transmit on the side link Data can avoid resource conflicts with other terminals and ensure the reliability of side link communication.
  • An embodiment of the present application also provides a communication device, which is used to execute the above-mentioned communication method. Part or all of the above communication methods can be implemented by hardware or software.
  • the communication device may be a chip or an integrated circuit during specific implementation.
  • the communication device when part or all of the communication method in the foregoing embodiment is implemented by software, the communication device includes: a processor, configured to execute a program, and when the program is executed, the communication device can implement what is provided in the foregoing embodiment
  • the communication device may further include a memory for storing necessary programs. These related programs can be loaded into the memory when the communication device leaves the factory, or can be loaded into the memory when needed later.
  • the foregoing memory may be a physically independent unit, or may be integrated with the processor.
  • the communication device may also only include a processor.
  • the memory for storing the program is located outside the communication device, and the processor is connected to the memory through a circuit/wire for reading and executing the program stored in the memory.
  • the processor may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP.
  • CPU central processing unit
  • NP network processor
  • the processor may include a hardware chip.
  • the aforementioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • CPLD complex programmable logic device
  • FPGA field-programmable gate array
  • GAL generic array logic
  • the memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include non-volatile memory (non-volatile memory), such as flash memory (flash memory) , Hard disk drive (HDD) or solid-state drive (SSD); the memory may also include a combination of the foregoing types of memory.
  • volatile memory volatile memory
  • non-volatile memory non-volatile memory
  • flash memory flash memory
  • HDD Hard disk drive
  • SSD solid-state drive
  • the memory may also include a combination of the foregoing types of memory.
  • Figure 18 shows a simplified schematic diagram of a terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal equipment includes a processor, and may also include a radio frequency circuit, an antenna, and an input/output device.
  • the processor can be used to process communication protocols and communication data, and can also be used to control terminal devices, execute software programs, and process data in software programs.
  • the terminal device may also include a memory.
  • the memory is mainly used to store software programs and data. These related programs can be loaded into the memory when the communication device leaves the factory, or can be loaded into the memory when needed later.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • only one memory and processor are shown in FIG. 18. In actual terminal equipment products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiver function can be regarded as the receiving unit and the transmitting unit (also collectively referred to as the transceiver unit) of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device .
  • the terminal device includes a receiving unit 31, a processing unit 32, and a sending unit 33.
  • the receiving unit 31 may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit 33 may also be called a transmitter, a transmitter, a transmitter, a transmitting circuit, etc.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the receiving unit 31 is used to perform the function of the first terminal in step 101 in the embodiment shown in FIG. 4; and the sending unit 33 is used to perform the first terminal function in step S102 in the embodiment shown in FIG. The function of a terminal.
  • the receiving unit 31 is used to perform the functions of the first terminal in step S202 in the embodiment shown in FIG. 6; and the sending unit 33 is used to perform steps S201 and S203 in the embodiment shown in FIG. The function of the first terminal.
  • the receiving unit 31 is used to perform the functions of the first terminal in steps S301 and S303 in the embodiment shown in FIG. 9; and the sending unit 33 is used to perform steps S302 and S302 in the embodiment shown in FIG. The function of the first terminal in S304.
  • the receiving unit 31 is configured to perform the functions of the first terminal in steps S401 and S403 in the embodiment shown in FIG. 10; the processing unit 32 is configured to perform step S404 in the embodiment shown in FIG. 10; and
  • the sending unit 33 is configured to perform the functions of the first terminal in steps S402 and S405 in the embodiment shown in FIG. 10.
  • the receiving unit 31 is configured to perform the function of the first terminal in step S501 in the embodiment shown in FIG. 12; the processing unit 32 is configured to perform steps S502 and S503 in the embodiment shown in FIG. 12; and
  • the sending unit 33 is configured to perform the function of the first terminal in step S504 in the embodiment shown in FIG. 12.
  • the receiving unit 31 is configured to perform the function of the first terminal in step S601 in the embodiment shown in FIG. 13; the processing unit 32 is configured to perform step S602 in the embodiment shown in FIG. 13; and the sending unit 33 is used to execute the function of the first terminal in step S603 in the embodiment shown in FIG. 13.
  • the receiving unit 31 is configured to perform the function of the first terminal in step S701 in the embodiment shown in FIG. 14; the processing unit 32 is configured to perform step S702 in the embodiment shown in FIG. 14; and the sending unit 33 is used to execute the function of the first terminal in step S703 in the embodiment shown in FIG. 14.
  • FIG 19 shows a simplified schematic diagram of the network side device.
  • the network side equipment includes a radio frequency signal transceiver and conversion part and a part 42.
  • the radio frequency signal transceiver and conversion part includes a receiving unit 41 and a sending unit 43 (also collectively referred to as a transceiver unit).
  • the RF signal transceiver and conversion part is mainly used for the transceiver and the conversion of RF signals and baseband signals; the 42 part is mainly used for baseband processing and control of network side equipment.
  • the receiving unit 41 may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit 43 may also be called a transmitter, a transmitter, a transmitter, a transmitting circuit, etc.
  • the 42 part is usually the control center of the network-side equipment, and it can usually be called the processing unit. It is used to control the network-side equipment to execute the above-mentioned Figure 4, Figure 6, Figure 9, Figure 10, Figure 12-14 with respect to the network-side equipment execution A step of. For details, please refer to the description of the relevant part above.
  • the 42 part can include one or more single boards, and each single board can include one or more processors and one or more memories.
  • the processor is used to read and execute the programs in the memory to realize the baseband processing function and to the network side. Control of equipment. If there are multiple boards, the boards can be interconnected to increase processing capacity. As an optional implementation, multiple boards may share one or more processors, or multiple boards may share one or more memories, or multiple boards may share one or more processing at the same time. Device.
  • the sending unit 43 is configured to perform the function of the network side device in step S101 in the embodiment shown in FIG. 4.
  • the receiving unit 41 is used to perform the function of the network side device in step S201 in the embodiment shown in FIG. 6; and the sending unit 43 is used to perform the network side device in step S202 in the embodiment shown in FIG. The function of the device.
  • the receiving unit 41 is used to perform the function of the network side device in step S302 in the embodiment shown in FIG. 9; and the sending unit 43 is used to perform the network side device in step S303 in the embodiment shown in FIG. The function of the device.
  • the sending unit 43 is configured to perform the function of the network side device in step S401 in the embodiment shown in FIG. 10.
  • the sending unit 43 is configured to perform the function of the network side device in step S601 in the embodiment shown in FIG. 13.
  • the sending unit 43 is configured to perform the function of the network side device in step S701 in the embodiment shown in FIG. 14.
  • the embodiments of the present application also provide a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes the computer to execute the above method.
  • the embodiment of the present application also provides a computer program product containing instructions, which when running on a computer, causes the computer to execute the above method.
  • the disclosed system, device, and method may be implemented in other ways.
  • the division of the unit is only a logical function division. In actual implementation, there can be other divisions.
  • multiple units or components can be combined or integrated into another system, or some features can be ignored or not. carried out.
  • 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, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions can be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium.
  • the computer instructions can be sent from one website, computer, server, or data center to another via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) A website, computer, server or data center for transmission.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium can be read-only memory (ROM), random access memory (RAM), or magnetic medium, such as floppy disk, hard disk, magnetic tape, magnetic disk, or optical medium, for example, Digital versatile disc (DVD) or semiconductor media, for example, solid state disk (SSD), etc.

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

Abstract

L'invention concerne un procédé et un dispositif de communication. Le procédé comprend : l'acquisition, par un premier terminal, de premières informations, les premières informations comprenant une première partie de largeur de bande et/ou un premier espacement entre sous-porteuses et/ou une première opportunité de transmission et/ou un premier mode de retransmission ; et l'utilisation, par le premier terminal, des premières informations pour transmettre des données sur une liaison latérale, la liaison latérale étant une liaison de communication sans fil entre le premier terminal et un second terminal. La présente invention concerne en outre un dispositif correspondant. Dans la solution de la présente invention, un premier terminal acquiert des premières informations, qui sont des informations complètes déterminées, et utilise les premières informations pour transmettre des données sur une liaison latérale, ce qui empêche un conflit de ressources avec d'autres terminaux et garantit la fiabilité de la communication de liaison latérale.
PCT/CN2020/081942 2019-03-29 2020-03-28 Procédé et dispositif de communication WO2020200137A1 (fr)

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