WO2020164391A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2020164391A1
WO2020164391A1 PCT/CN2020/073917 CN2020073917W WO2020164391A1 WO 2020164391 A1 WO2020164391 A1 WO 2020164391A1 CN 2020073917 W CN2020073917 W CN 2020073917W WO 2020164391 A1 WO2020164391 A1 WO 2020164391A1
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WO
WIPO (PCT)
Prior art keywords
bwp
terminal device
time unit
system parameter
dedicated
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PCT/CN2020/073917
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English (en)
Chinese (zh)
Inventor
李新县
唐浩
王婷
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华为技术有限公司
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Publication of WO2020164391A1 publication Critical patent/WO2020164391A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and device.
  • Uu air interface communication refers to the communication between terminal equipment and base station on air interface resources.
  • the side link communication refers to the communication between terminal equipment and terminal equipment on side link resources.
  • the two terminal devices need to be connected by the side link before the side link communication.
  • the first terminal device serves as the sending end and the second terminal device serves as the receiving end.
  • the bypass connection process may be: the first terminal device sends a communication request to the second terminal device, and the second terminal device receives the communication After the request, the authorization and communication relationship confirmation are sent to the first terminal device.
  • the BWP refers to a group of continuous frequency domain resources on the carrier. How does the terminal device use the BWP for side link connection and side link communication? , Is the current research hotspot.
  • This application provides a communication method and device to use BWP to perform side link connection and side link communication.
  • a communication method including: a first terminal device uses a first system parameter on a first bandwidth portion BWP in a first time unit to establish a side link connection with a second terminal device, and the first BWP Including a pre-configured BWP or a public BWP, the first system parameter is the same as the system parameter of the pre-configured BWP or the public BWP; the first terminal device uses the second system parameter on the second BWP in the second time unit, Perform side link communication with the second terminal device.
  • the first terminal device uses the first system parameters on the first BWP to establish a side link connection with the second terminal device in the first time unit, and in the second time unit, the second The second system parameter is used on the BWP to perform side link communication with the second terminal device.
  • the terminal device uses the BWP to perform side link connection and side link communication.
  • the method further includes: the first terminal device receives radio resource control RRC dedicated signaling sent by the network device, where the RRC dedicated signaling is used to configure the first BWP; The first terminal device determines the first BWP according to the RRC dedicated signaling.
  • the first BWP is a dedicated BWP
  • the dedicated BWP includes a pre-configured BWP or a public BWP
  • the system parameters of the dedicated BWP are the same as those of the pre-configured or public BWP.
  • the side link connection can be established by using the above-mentioned dedicated BWP. Compared with the existing one, only a pre-configured BWP or a public BWP can be used to establish a side link connection, which can expand the use of dedicated BWP and increase the way to establish a side link connection.
  • the side link communication includes unicast, multicast, or broadcast
  • the first terminal device uses the second system parameter on the second time unit and the second BWP to communicate with the second
  • the side link communication performed by the terminal device includes: the second BWP is a first dedicated BWP, the second system parameter is a system parameter of the first dedicated BWP, and the first terminal device is at the second time Unit, the second system parameter is used on the first dedicated BWP to perform unicast, multicast or broadcast with the second terminal device; or, the second BWP is a pre-configured BWP or a public BWP, and the second system parameter For the pre-configured BWP or public BWP system parameters, the first terminal device uses the second system parameters on the second time unit, pre-configured BWP or public BWP, and performs unicast with the second terminal device , Multicast or broadcast; or, the second BWP is a second dedicated BWP, and the first frequency domain resource occupied by the frequency domain of the second dedicated
  • the method further includes: the first terminal device receives a first instruction sent by a network device, and the first instruction is used to indicate the first time unit and the second time unit The time ratio of; the first terminal device determines the first time unit and the second time unit according to the first instruction.
  • the first terminal device can determine the first time unit and the second time unit according to the instructions of the network device, and the ratio of the first time unit and the second time unit is more flexible.
  • the method further includes: the first terminal device works in the first time unit when the timer is started; when the timer expires, the first terminal The device switches to work in the second time unit; or, when the timer starts, the first terminal device works in the second time unit; when the timer expires, the first terminal device Switch to the first time unit to work.
  • the first terminal device can determine the ratio of the first time unit and the second time unit according to the timer, without the need for network device instructions, saving air interface overhead.
  • a communication device including a processor, configured to use a first system parameter on a first time unit and a first bandwidth part BWP to establish a side link connection with a second terminal device, and at a second time Unit, a second BWP uses a second system parameter to perform sidelink communication with the second terminal device, the first BWP includes a pre-configured BWP or a public BWP, and the first system parameter and the pre-configured BWP Or the system parameters of the public BWP are the same.
  • the apparatus further includes a communication interface, the communication interface is used to receive radio resource control RRC dedicated signaling sent by a network device, and the RRC dedicated signaling is used to configure the first BWP
  • the processor is further configured to determine the first BWP according to the RRC dedicated signaling.
  • the side link communication includes unicast, multicast or broadcast
  • the processor uses the second system parameter on the second time unit and the second BWP to communicate with the second terminal device.
  • the second BWP is the first dedicated BWP
  • the second system parameter is the system parameter of the first dedicated BWP
  • the first dedicated BWP Use the second system parameter on the BWP to perform unicast, multicast, or broadcast with the second terminal device
  • the second BWP is a pre-configured BWP or a public BWP
  • the second system parameter is the pre-configured BWP or public BWP system parameters, using the second system parameters on the pre-configured BWP or public BWP in the second time unit to perform unicast, multicast or broadcast with the second terminal device
  • the first The second BWP is a second dedicated BWP
  • the first frequency domain resource occupied by the frequency domain of the second dedicated BWP includes a
  • the communication interface is also used to receive a first indication sent by a network device, and the first indication is used to indicate a time ratio between the first time unit and the second time unit
  • the processor is further configured to determine the first time unit and the second time unit according to the first instruction.
  • the processor is further configured to: when the timer starts, work in the first time unit; when the timer expires, switch to work in the second time unit Or, when the timer starts, work in the second time unit; when the timer expires, switch to work in the first time unit.
  • a communication device including a processing module, configured to use a first system parameter on a first time unit and a first bandwidth portion BWP to establish a side link connection with a second terminal device, and, in a second In time unit, a second system parameter is used on the second BWP to perform sidelink communication with the second terminal device.
  • the first BWP includes a pre-configured BWP or a public BWP, and the first system parameter is the same as the pre-configured BWP.
  • the system parameters of BWP or public BWP are the same.
  • the device further includes a transceiver module, which is further configured to receive radio resource control RRC dedicated signaling sent by a network device, where the RRC dedicated signaling is used to configure the first BWP; and the processing The module is also used to determine the first BWP according to the RRC dedicated signaling.
  • a transceiver module which is further configured to receive radio resource control RRC dedicated signaling sent by a network device, where the RRC dedicated signaling is used to configure the first BWP; and the processing The module is also used to determine the first BWP according to the RRC dedicated signaling.
  • the side link communication includes unicast, multicast or broadcast
  • the processing module uses the second system parameter on the second time unit and the second BWP to communicate with the second terminal device.
  • the second BWP is the first dedicated BWP
  • the second system parameter is the system parameter of the first dedicated BWP
  • the first dedicated BWP Use the second system parameter on the BWP to perform unicast, multicast, or broadcast with the second terminal device
  • the second BWP is a pre-configured BWP or a public BWP
  • the second system parameter is the pre-configured BWP or public BWP system parameters, using the second system parameters on the pre-configured BWP or public BWP in the second time unit to perform unicast, multicast or broadcast with the second terminal device
  • the first The second BWP is a second dedicated BWP
  • the first frequency domain resource occupied by the frequency domain of the second dedicated BWP includes
  • the transceiver module is further configured to receive a first indication sent by a network device, and the first indication is used to indicate a time ratio between the first time unit and the second time unit
  • the processing module is further configured to determine the first time unit and the second time unit according to the first instruction.
  • the processing module is further configured to: work in the first time unit when the timer is started; switch to work in the second time unit when the timer expires Or, when the timer starts, work in the second time unit; when the timer expires, switch to work in the first time unit.
  • embodiments of the present application also provide a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method designed in the first aspect.
  • an embodiment of the present application also provides a chip system.
  • the chip system includes a processor and may also include a memory for implementing the method of the first aspect.
  • the chip system can be composed of chips, or can include chips and other discrete devices.
  • the embodiments of the present application also provide a computer program product, including instructions, which when run on a computer, cause the computer to execute the method of the first aspect.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of this application.
  • FIG. 2 is a schematic diagram of a wireless frame provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of BWP provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a communication process provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of side link communication provided by an embodiment of this application.
  • Fig. 6 is a schematic diagram of a time pattern provided by an embodiment of the application.
  • FIGS. 7 to 9 are schematic diagrams of a communication process provided by an embodiment of this application.
  • FIG. 10 is a flowchart of base station scheduling provided by an embodiment of this application.
  • FIG. 11 is a flowchart of UE self-sensing provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 13 is a schematic diagram of another structure of a communication device provided by an embodiment of the application.
  • the communication system 100 may include at least one network device 110.
  • the network device 110 may be a device that communicates with terminal devices, such as a base station or a base station controller. Each network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area (cell).
  • the network device 110 may be a global system for mobile communications (GSM) system or a base transceiver station (BTS) in code division multiple access (CDMA), or it may be a broadband code division multiple access (CDMA) base station.
  • GSM global system for mobile communications
  • BTS base transceiver station
  • CDMA code division multiple access
  • CDMA broadband code division multiple access
  • the base station (nodeB, NB) in the wideband code division multiple access (WCDMA) system can also be an evolved NodeB (eNB or eNodeB) in the LTE system, or it can be a cloud radio access network (cloud radio).
  • the wireless controller in the access network (CRAN) scenario, or the network device can be a relay station, access point, in-vehicle device, wearable device, and network device in the future 5G network, for example, in the new radio (NR)
  • the base station (gNodeB or gNB) or the transmission receiving point/transmission reception point (TRP), or the network equipment 110 may also be the network equipment in the future evolution of the public land mobile network (PLMN), etc.,
  • PLMN public land mobile network
  • the communication system 100 also includes one or more terminal devices 120 located within the coverage area of the network device 110.
  • the terminal device 120 may be mobile or fixed.
  • the terminal device 120 may refer to an access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless communication equipment, user Agent or user device.
  • UE user equipment
  • the access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or terminals in the future evolved public land mobile network (PLMN) Devices, etc., are not limited in the embodiments of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the network device 110 and the terminal device 120 may transmit data through air interface resources, and the air interface resources may include at least one of time domain resources, frequency domain resources, and code domain resources.
  • the network device 110 may send control information to the terminal device 120 through a control channel, such as a physical downlink control channel (PDCCH), thereby providing the terminal device 120 with control information.
  • a control channel such as a physical downlink control channel (PDCCH)
  • Allocate data channels such as physical downlink shared channel (PDSCH) or physical uplink shared channel (physical uplink shared channel, PUSCH) resources.
  • control information may indicate the symbol and/or resource block (resource block, RB) to which the data channel is mapped, and the network device 110 and the terminal device 120 perform data transmission on the allocated time-frequency resources through the data channel.
  • the above-mentioned data transmission may include downlink data transmission and/or uplink data transmission
  • downlink data (such as data carried in PDSCH) transmission may refer to the network device 110 sending data to the terminal device 120
  • uplink data such as data carried in PUSCH
  • Data can be data in a broad sense, such as user data, system information, broadcast information, or other information.
  • the terminal devices 120 can also use side link resources for data transmission. Similar to the above air interface resources, the side link resources can also include time domain resources, frequency domain resources, and code domain resources. At least one of them.
  • the physical channel for data transmission by the terminal device 120 may include a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), or a physical sidelink feedback. At least one of the channel (physical sidelink feedback channel, PSFCH), etc.
  • PSSCH is used to transmit data
  • PSCCH is used to transmit control information, such as scheduling assignment (SA) information
  • PSFCH is used to transmit feedback information.
  • the feedback information may include channel state information (CSI), Positive confirmation (acknowledgement, ACK) or negative confirmation (negative acknowledgement, NACK), etc.
  • CSI channel state information
  • ACK Positive confirmation
  • NACK negative confirmation
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of one network device may include other numbers of terminal devices.
  • This application is implemented The example does not limit this.
  • the side-link communication in the embodiments of the present application may refer to the communication between one terminal device and another terminal device (such as unicast, etc.), or the side-link communication may refer to the communication between one terminal device and multiple terminals.
  • the communication between terminal devices (such as multicast and broadcast, etc.) is not limited in this embodiment of the application.
  • "by-link communication refers to communication between one terminal device and another terminal device" is taken as an example for description.
  • the side link is used for communication between the terminal device and the terminal device, and may include a physical sidelink shared channel (PSSCH) and a physical sidelink control channel (PSCCH).
  • PSSCH is used to carry sidelink data (SL data)
  • PSCCH is used to carry sidelink control information (sidelink control information, SCI)
  • SCI sidelink control information
  • SCI sidelink control assistance
  • SL SA is information related to data scheduling, such as resource allocation and/or modulation and coding scheme (MCS) information used to carry PSSCH.
  • MCS modulation and coding scheme
  • the sidelink communication may also include: a physical sidelink feedback channel (PSFCH).
  • the physical side link feedback channel can also be referred to as a side link feedback channel for short.
  • the physical sidelink feedback channel may be used to transmit sidelink feedback control information (SFCI), and the sidelink feedback control information may also be referred to as sidelink feedback information for short.
  • the side link feedback control information may include one or more of channel state information (channel state information, CSI), hybrid automatic repeat request (HARQ) and other information.
  • the HARQ information may include acknowledgement information (acknowledgement, ACK) or negative acknowledgement (negtive acknowledgement, NACK), etc.
  • System parameters can also be referred to as frame structure parameters (numerology).
  • the system parameters may include one or more of subcarrier spacing and cyclic prefix (CP) type.
  • CP type can also be called CP length, or CP for short.
  • the CP type may be an extended CP or a normal (normal) CP.
  • the next time slot of the extended CP may include 12 time domain symbols, and the next time slot of the normal CP may include 14 time domain symbols.
  • Time domain symbols can be referred to simply as symbols.
  • the time-domain symbols can be orthogonal frequency division multiplexing (OFDM) symbols, or discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s-s- OFDM) symbol.
  • the time domain symbol may be an OFDM symbol as an example for description.
  • the system parameters corresponding to number 0 are: subcarrier spacing is 15kHz, CP is normal CP, the system parameters corresponding to number 1 are: subcarrier spacing is 30kHz, CP is normal CP, and the system parameters corresponding to number 2 are:
  • the carrier interval is 60kHz, CP is normal CP or extended CP, the system parameters corresponding to number 3 are: subcarrier interval is 120kHz, CP is normal CP, and the system parameters corresponding to number 4 are: subcarrier interval is 240kHz, CP is Normal CP.
  • one time slot can be 1 millisecond (ms); when the subcarrier interval is 30kHz, one time slot can be 0.5ms.
  • a slot can include one or more symbols.
  • the next time slot of the normal cyclic prefix (CP) may include 14 symbols, and the next time slot of the extended CP may include 12 symbols.
  • Mini-slot also called mini-slot, can be a unit smaller than a slot, and a mini-slot can include one or more symbols.
  • a mini-slot may include 2 symbols, 4 symbols or 7 symbols, etc.
  • One slot may include one or more mini-slots.
  • a radio frame includes 10 subframes, each subframe may include 1 slot, and each slot may include 14 symbols. Among them, one radio frame can last for 10ms, each subframe can last for 1ms, and each time slot lasts for 1ms. Further, the mini-slot may include 4 symbols, 2 symbols or 7 symbols, etc.
  • the time slot characteristics under different system parameters are shown in Table 2. among them, Represents the number of symbols included in a slot, and the symbol number (or index) in the slot is For example, there can be 14 symbols in the normal CP, and 12 symbols in the extended CP.
  • a radio frame may include 10 subframes, a radio frame may be 10ms, and a subframe may be 1ms.
  • Carrier bandwidth part (carrier bandwidth part, BWP)
  • the carrier bandwidth part can be referred to as the bandwidth part (BWP) for short.
  • BWP is a group of continuous frequency domain resources on the carrier.
  • BWP is a group of continuous resource blocks (resource blocks, RB) on the carrier, or BWP is the carrier A group of contiguous subcarriers, or BWP is a group of contiguous resource block groups (RBG) on a carrier.
  • resource blocks resource blocks
  • BWP is a group of contiguous resource block groups (RBG) on a carrier.
  • RBG resource block groups
  • one RBG includes at least one RB, such as 1, 2, 4, 6, or 8, etc.
  • one RB may include at least one subcarrier, such as 12, etc.
  • the network in a cell, for a terminal device, can configure a maximum of 4 BWPs for the terminal device.
  • 4 BWPs Under frequency division duplexing (FDD), 4 BWPs can be configured for the uplink and downlink, and 4 BWPs can be configured for the uplink and downlink under TDD (time division duplexing).
  • the network device may configure the terminal device with system parameters including subcarrier spacing and/or CP length for each BWP.
  • only one BWP can be activated, and terminal equipment and network equipment send and receive data on the activated BWP.
  • the existing BWP is defined on a given carrier, that is, the resources of one BWP are located in one carrier resource.
  • carrier bandwidth carrier bandwidth
  • only one BWP can be configured for a UE.
  • the bandwidth of the BWP is less than or equal to the UE bandwidth capability (UE bandwidth capability), and the UE bandwidth capability is less than or equal to Carrier bandwidth (carrier BW).
  • UE bandwidth capability UE bandwidth capability
  • Carrier bandwidth carrier bandwidth
  • two BWPs can be configured for one UE, namely BWP1 and BWP2, and the bandwidths of BWP1 and BWP2 overlap.
  • two BWPs can be configured for one UE, namely BWP1 and BWP2, and BWP1 and BWP2 do not overlap.
  • the system parameters of BWP1 and BWP2 may be the same system parameter, or may also be different system parameters.
  • the configuration of the BWP (for example, the configuration of the number, location, and/or system parameters of the BWP) may also be other configurations, which are not limited in the embodiment of the present application.
  • the unit of the time unit may be a radio frame (radio frame), subframe (subframe), time slot (slot), mini-slot (mini-slot), and symbol (symbol).
  • a time unit may include one or more time slots.
  • One radio frame may include one or more subframes, and one subframe may include one or more time slots.
  • a slot can include one or more symbols.
  • next time slot of the normal cyclic prefix may include 14 time domain symbols
  • the next time slot of the extended CP may include 12 time domain symbols.
  • Time domain symbols can be referred to simply as symbols.
  • the time-domain symbols can be orthogonal frequency division multiplexing (OFDM) symbols, or discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s-s- OFDM) symbol.
  • Mini-slot also called mini-slot, can be a unit smaller than a slot, and a mini-slot can include one or more symbols.
  • a mini-slot may include 2 symbols, 4 symbols or 7 symbols, etc.
  • One slot may include one or more mini-slots.
  • the network device can configure SL resources for the sender UE and/or the receiver UE through configuration information, and the SL resources include one or more resource pools. In the embodiment of the present application, the number may be 2, 3, 4 or more, which is not limited in the embodiment of the present application.
  • the network equipment can indicate the resources in the resource pool for sidelink communication to the sending end UE through the DCI. When the sending end UE receives the DCI, it can use the resources in the resource pool indicated by the DCI to send The receiving end UE sends SL information, and the SL information may include SL data and/or SCI and/or SFCI, etc. Correspondingly, the receiving end may receive SL information.
  • the network equipment may be a base station, or a network management system operated by an operator.
  • the network device can configure SL resources for UE1 and UE2, and the network device can send DCI to UE1.
  • UE1 can determine the SL transmission resource according to the indication of the DCI, and send SCI and/or SL data on the SL transmission resource.
  • UE2 determines the SL receiving resource according to the configured SL resource, receives the SCI on the SL receiving resource, and receives the SL data on the receiving resource according to the SCI.
  • the UE2 may send 1 to the UE to send SFCI.
  • the SFCI may include a positive acknowledgement ACK, otherwise, the SFCI may include a negative acknowledgement NACK.
  • the network device may configure SL resources for UE1, UE2, and UE3, and the network device may allocate SL transmission resources for UE3 and UE1 through DCI.
  • the UE3 may send the SL signal to the UE1.
  • the SL signal may include SCI and/or SL data.
  • UE1 can send SFCI to UE3.
  • UE1 may send an SL signal to UE2 on the SL transmission resource.
  • the SL signal may include SCI and/or SL data.
  • UE2 can send SFCI to UE1.
  • the base station scheduling mode may also be called a base station assisted scheduling mode, may also be called mode 1 (mode 1), or may be called mode 3 (mode 3).
  • the network device can configure SL resources for the sender UE and/or the receiver UE through configuration information, and the SL resources include one or more resource pools.
  • the UE at the sending end performs sensing in the configured SL resources, and if it senses that there are available resources in the SL resources, it sends SL information in the available resources, and correspondingly, the UE at the receiving end receives the SL information in the SL resources.
  • the network device can configure SL resources for UE1 and UE2.
  • UE1 senses SL transmission resources, and sends SCI and/or SL data in the SL transmission resources.
  • UE2 receives SCI and/or SL data according to the configured SL resource.
  • the UE2 can sense the SL transmission resources in the configured SL resources, and send SFCI to UE1 on the SL transmission resources.
  • UE1 when UE1 acts as a transmitter and sends SL data information to UE2 on SL transmission resources, UE1 can also act as a receiver to receive SL data information sent by UE3. Optionally, at the same time, UE1 can send SFCI to UE3 on the SL transmission resource.
  • SFCI for detailed description, please refer to the record of the base station scheduling mode of the side link SL, which will not be described here.
  • the UE automatic selection mode may also be referred to as the UE autonomous scheduling mode or the UE autonomous sensing mode, which may also be referred to as mode 2 (mode 2), or mode 4 (mode 4).
  • mode 2 mode 2
  • mode 4 mode 4
  • the first terminal device and the second terminal device in the flow may be the terminal device 120 in the flow shown in FIG. 1, and the network device may be the flow shown in FIG.
  • the network device 110 in the process It is understandable that the functions of the network equipment can also be realized by the chips applied to the network equipment, or through other means to support the realization of the network equipment; the functions of the terminal equipment can also be realized by the chips applied to the terminal equipment, or through other Device to support terminal device implementation.
  • the specific process can be:
  • the first terminal device uses the first system parameter on the first BWP in the first time unit to establish a side link connection with the second terminal device.
  • the first BWP includes a pre-configured BWP or a public BWP, and the first system parameters are the same as the system parameters of the pre-configured BWP or the public BWP. It is understandable that the first BWP includes a description of a pre-configured BWP or a public BWP, and may include: the first BWP is a pre-configured BWP; or, the first BWP is a public BWP; or, the first BWP is a dedicated BWP, and the dedicated BWP
  • the BWP occupies the first frequency domain resource
  • the public BWP or the pre-configured BWP occupies the second frequency domain resource
  • the first frequency domain resource includes the second frequency domain resource.
  • the core network device can be configured with a pre-configured BWP for the terminal device, and the access network device can be configured with a dedicated BWP and/or a public BWP for the terminal device.
  • the core network may be a prose application of the public land mobile network (PLMN), and the access network device may use the system information block (SIB) or master information block (master information block).
  • SIB system information block
  • Master information block master information block
  • Information block (MIB) configures a public BWP for terminal equipment
  • access network equipment can configure a dedicated BWP for terminal equipment through radio resource control (Radio Resource Control, RRC) dedicated signaling.
  • RRC Radio Resource Control
  • the first terminal device may determine the first BWP according to the RRC dedicated signaling sent by the network device.
  • the first terminal device may store pre-configured BWP information, dedicated BWP information, and/or public BWP information, and the first terminal device may determine the pre-configured BWP, dedicated BWP, and/or public BWP according to the corresponding information .
  • the public BWP may also be called common BWP
  • the dedicated BWP may also be called dedicated BWP
  • the pre-configured BWP may also be called pre-configured BWP.
  • the pre-configured BWP is that the operator pre-configures the side link resources for the terminal or pre-configures the side link resources for the terminal in a predefined manner in a standard protocol.
  • side link resources can be configured for one or more terminals.
  • the operator’s network management system can send pre-configuration information to each terminal.
  • the pre-configuration information is used for each terminal.
  • the terminal 1 can use the side link resources configured by the pre-configuration information to broadcast data and/ Or control information, other terminals, such as terminal 2, can receive data and/or control information on the side link resource.
  • the side link resources configured by the pre-configuration information can also be used for multicast transmission and/or unicast transmission, which is not limited in this application.
  • broadcast transmission may be referred to as broadcast sidelink signal communication, or may be referred to as sidelink communication of broadcast services, or sidelink communication where the transmission type is broadcast.
  • multicast transmission may be referred to as multicast sidelink signal communication, and may also be referred to as sidelink communication of a multicast service, or sidelink communication of a multicast transmission type.
  • unicast communication may be referred to as unicast sidelink signal communication, and may also be referred to as sidelink communication of unicast service, or sidelink communication of unicast transmission type.
  • a network management system operated by an operator may configure a side link BWP for a terminal device through pre-configuration signaling, and the side link BWP may be referred to as a pre-configured side link BWP.
  • the public BWP may include a pre-configured side link BWP.
  • the pre-configured side link BWP may also be referred to as the pre-configured BWP for short.
  • the network management system can write pre-configuration signaling in the SIM or USIM of the terminal, or store pre-configuration information in the ROM (read only memory) of the mobile device.
  • the terminal can read the pre-configuration information in the SIM card or ROM. Let obtain the configuration information of the pre-configured side link BWP, and then determine the pre-configured side link BWP.
  • the network management system may also send pre-configuration signaling to a mobile equipment (mobile equipment, ME) of the terminal, and the terminal may determine the pre-configured side link BWP through the pre-configuration signaling.
  • the sending resource pool and/or the receiving resource pool configured in the pre-configured BWP may be referred to as the pre-configured resource pool.
  • the pre-configured resource pool may include a pre-configured sending resource pool and/or a pre-configured receiving resource pool.
  • the SIM subscriber identification module
  • the SIM may be a user identification card, also called a user identification card, a smart card, etc.
  • USIM can be an abbreviation of universal subscriber identity module, or it can be called an upgraded SIM.
  • the one or more terminals may refer to terminals served by the operator.
  • the one or more terminals may refer to one or more terminals that can receive operator pre-configuration information, for example, all terminals served by a cell.
  • the public BWP is configured by system information configuration or radio resource control (radio resource control, RRC) public information configuration, for example, the access network device sends system information or RRC public information to the terminal.
  • System information or public RRC information may be cell-level parameters.
  • side link resources can be configured for a group of terminals.
  • the access network device can send system information or RRC public information to a group of terminals.
  • the system information Or RRC common information is used to configure side link resources for each terminal. Since system information or RRC public information is sent to a group of terminals, the side link resources of system information configuration or RRC public information configuration can be used for multicast transmission between terminals in the group.
  • terminal 1 can use system information If the side link resource configured or RRC common information is configured to multicast data and/or control information, other terminals in the group, such as terminal 2, can receive data or control information on the side link resource.
  • the access network device may configure the side link BWP for the terminal through system information or RRC public information, and the side link BWP may be called the system public side link BWP.
  • the system public side link BWP may also be referred to as the system public BWP or public BWP for short.
  • the sending resource pool and/or receiving resource pool configured in the system public BWP may be referred to as the system public resource pool or the public resource pool.
  • the public resource pool may include a public sending resource pool and/or a public receiving resource pool.
  • the group of terminals may include one or more terminals.
  • the group of terminals may refer to one or more terminals that can receive the system information or RRC common information.
  • a cell may divide the terminals served by it into multiple groups, and the group of terminals is one of them.
  • the side link resources of the system information configuration or the RRC public information configuration can also be used for unicast transmission and/or broadcast transmission, which is not limited in this application.
  • the dedicated BWP is configured by RRC dedicated information, for example, the access network device sends RRC dedicated information to the terminal.
  • the RRC dedicated information may be terminal-level parameters (or referred to as UE-level parameters), and parameter configuration is performed for the terminal.
  • side link resources can be configured for a single terminal.
  • the access network device can send RRC dedicated information to a single terminal.
  • the RRC dedicated information is used to configure side link resources for the terminal. . Since the RRC dedicated information is sent to a single terminal, the side link resources configured by the RRC dedicated information can be used for unicast transmission between terminals in the group. For example, terminal 1 can use the side link resources configured by the RRC dedicated information to transmit The terminal 2 unicasts data or control information.
  • the access network device can configure the side link BWP to the terminal through RRC dedicated information.
  • the side link BWP can be called a user dedicated side link BWP, or a user specific side link BWP, or simply a user Dedicated BWP, or user-specific BWP for short, or dedicated BWP for short, or specific BWP for short.
  • the BWP may be configured by the network device to the terminal through UE-specific signaling.
  • the sending resource pool and/or receiving resource pool configured in the dedicated BWP may be referred to as a dedicated resource pool.
  • the dedicated resource pool may include a dedicated sending resource pool and/or a dedicated receiving resource pool.
  • the sidelink resources configured by the RRC dedicated information can also be used for broadcast transmission and/or multicast transmission, which is not limited in this application.
  • the first terminal device serves as the sending end of the side link communication
  • the second terminal device serves as the receiving end of the side link communication.
  • the process of the side link connection may be: the first terminal device sends the side link to the second terminal device.
  • Link communication request after receiving the side link request, the second terminal device sends authorization and communication relationship determination to the first terminal device.
  • the second terminal device can also be used as the sending end of side link communication
  • the first terminal device can also be used as the receiving end of side link communication.
  • the process of establishing a side link connection is similar to the above process. No more explanation.
  • the first terminal device uses the second system parameter on the second BWP in the second time unit to perform sidelink communication with the second terminal device.
  • the second system parameter is a system parameter corresponding to the second BWP
  • the second BWP may include a public BWP, a pre-configured BWP, or a dedicated BWP.
  • the side link communication between the first terminal device and the second terminal device may include unicast, groupcast, or broadcast.
  • broadcast can refer to the communication between one terminal device and multiple terminal devices.
  • broadcast can refer to the communication between one terminal device and all terminal devices in the cell. Therefore, broadcast needs to be received by all terminal devices. .
  • the purpose of broadcasting is to allow all terminal devices to receive the broadcast message, but in reality, one or more terminal devices may receive the broadcast message.
  • Multicast can refer to the communication between a terminal device and a group of terminal devices.
  • the purpose of multicast is to make it possible for all terminal devices in a group of terminal devices to receive the multicast message, but in reality, one or more terminal devices in the group of terminal devices may receive the multicast message.
  • Unicast can refer to the communication between one terminal device and another terminal device.
  • the purpose of unicast is to allow a terminal device to receive a unicast message, but in practical applications, the terminal device may or may not receive the above unicast message.
  • the second BWP is the first dedicated BWP
  • the second system parameter is specifically the system parameter of the first dedicated BWP
  • the first terminal device may use the second system parameter on the first dedicated BWP in the above second time unit , Unicast, multicast or broadcast with the second terminal device.
  • the second BWP is a pre-configured BWP or a public BWP
  • the second system parameter is a system parameter of a pre-configured BWP or a public BWP.
  • the first terminal device can use the second time unit on the pre-configured BWP or public BWP. 2. System parameters, unicast, multicast or broadcast with the second terminal device.
  • the second BWP may be a second dedicated BWP
  • the second dedicated BWP occupies the first frequency domain resource
  • the public BWP or the pre-configured BWP occupies the second frequency domain resource
  • the first frequency domain resource includes the second frequency domain Resource
  • the second system parameter is the system parameter of the second dedicated BWP
  • the second system parameter is the same as the system parameter of the pre-configured BWP or the public BWP
  • the first terminal device can be in the above second time unit
  • the second dedicated BWP Use the second system parameters to perform unicast, multicast or broadcast with the second terminal device.
  • the following example may be used to determine the first time unit and the second time unit in the process shown in FIG. 4 above:
  • Example 1 The network device sends a first instruction to the terminal device, where the first instruction is used to indicate the time ratio between the first time unit and the second time unit; the terminal device determines in each time period according to the first instruction The first time unit and the second time unit.
  • the length of each time period can be predefined, or pre-indicated by the network device, etc. For example, if the time period is 1 time slot and one time slot is 1 ms as an example, if the first indication indicates that the time ratio between the first time unit and the second time unit is 3: 1, then the terminal device can determine 1 0.75 ms in the time slot is the first time unit, and 0.25 ms in one time slot is the second time unit.
  • the terminal device can determine 8 time slots within 10 time slots
  • the time slot is the first time unit, and the 2 time slots are the second time unit.
  • the sequence of the first time unit and the second time unit is not limited.
  • the first time unit includes 8 time slots within 10 time slots
  • the second time unit includes 10 time slots.
  • the first time unit can include any 8 time slots within 10 time slots
  • the second time unit can include any 2 time slots within 10 time slots.
  • the 8 time slots included in the time unit may not overlap with the 2 time slots included in the second time unit.
  • 10 time slots are numbered from 0 to 9, then the 8 time slots included in the first time unit can be numbered from 0 to 7, and the second time unit includes 2 time slots.
  • the number of time slots can be 8 and 9.
  • the numbers of the 2 time slots included in the second time unit may be 0 and 1, and the numbers of the 8 time slots included in the first time unit may be 2-9.
  • the 8 time slots included in the first time unit are numbered 0, 1, 2, 5, 6, 7, 8, 9, and the 2 time slots included in the second time unit are numbered 3 and 4, etc. . This application is not limited.
  • the network device can configure or predefine a time pattern. As shown in FIG. 6, in the time domain, the time pattern includes the first BWP time period and the second BWP time period.
  • the network device and the terminal device can determine the first time unit and the second time unit according to the time pattern.
  • the time pattern may be configured for core network equipment, and the time pattern may be applicable to all access network equipment and terminal equipment.
  • the time pattern may be pre-configured to the terminal device through a universal subscriber identity module (USIM) or a mobile equipment (mobile equipment, ME).
  • the time pattern may be configured per cell, and the access network device may configure the time pattern in system messages or RRC dedicated information.
  • an application scenario is provided: as shown in Figure 6, in the order of the time domain, they are the first BWP time period, the second BWP time period, the first BWP time period, and the second BWP time. segment.
  • the first terminal device uses the first system parameters in the first BWP in the first first BWP time period from left to right to establish a side link connection with the second terminal device, and in the first first BWP from left to right, In the second BWP time period, the second system parameter is used in the second BWP to perform side link communication with the second terminal device.
  • the first terminal device uses the first system parameters in the first BWP during the second first BWP time period from left to right to establish a side link connection with the third terminal device.
  • the second system parameter is used with the second BWP to establish side link communication with the third terminal device.
  • the number of the first BWP time period and the second BWP time period are two for illustration, and it is not a limitation of the application. Both the BWP time period and the second BWP time period are within the protection scope of this application.
  • Example 3 Set a timer.
  • the terminal device works in the first time unit, and when the timer expires, the terminal device switches to the second time unit to work.
  • the terminal device works in the second time unit, and when the timer expires, the terminal device switches to work in the first time unit.
  • the terminal device switches to the second time unit to work, which can also be referred to as the terminal device falling back to work on the second BWP; the terminal device switching to the first time unit to work, can also be called the terminal device falling back to the first time unit BWP work.
  • the method for determining the first time unit and the second time unit in the foregoing examples 1 to 3 is applicable to both the first terminal device in the process shown in FIG. 4 and the process shown in FIG. 4 The second terminal device.
  • the terminal devices in the foregoing examples 1 to 3 include a first terminal device and a second terminal device.
  • the first terminal device and the second terminal device are on the first BWP, using the first system parameters to establish a side link connection, and on the second BWP, using the second system parameters, Perform side link communication.
  • the first BWP is a public BWP or a pre-configured BWP, or the first BWP is a dedicated BWP, but the frequency domain resources of the dedicated BWP include frequency domain resources of the public BWP or pre-configured BWP, and the first system parameter is the public BWP or pre-configured System parameters of BWP.
  • first terminal device and the second terminal device meet the conditions of the side link communication on the first BWP and the first system parameters, and the side link connection between the first terminal device and the second terminal device can be established.
  • the second BWP and the second system parameters of the side link communication between the first terminal device and the second terminal device are not limited in this application.
  • the first terminal device and the second terminal device in the flow may be the terminal device 120 in the flow shown in FIG. 1, and the flow is:
  • the first terminal device uses the first system parameter on the first frequency domain resource included in the dedicated BWP to establish a sidelink connection with the second terminal device.
  • the first terminal device uses the first system parameter on the second frequency domain resource included in the dedicated BWP to perform sidelink communication with the second terminal device.
  • the first system parameter is a system parameter of the dedicated BWP, and the first system parameter is the same as a system parameter of a public BWP or a pre-configured BWP.
  • the dedicated BWP includes a first frequency domain resource and a second frequency domain resource, and the first frequency domain resource and the second frequency domain resource may overlap or not overlap at all.
  • the overlap may refer to complete overlap or partial overlap, etc., which is not limited in the embodiment of the present application.
  • the first frequency domain resource overlaps with the frequency domain resource occupied by the public BWP or the pre-configured BWP, which can be described as: the first frequency domain resource is overlapped with the frequency domain resource of the public BWP or the pre-configured BWP Overlap, or, it can be described as: the sending resource pool in the first frequency domain resource overlaps with the receiving resource pool of the public BWP or the pre-configured BWP, or it can be described as: the receiving resource pool in the first frequency domain resource There is overlap with the sending resource pool of the public BWP or the pre-configured BWP.
  • the frequency domain resource in which the first frequency domain resource overlaps with the public BWP or the pre-configured BWP may be referred to as an overlapping frequency domain resource.
  • the first terminal device may send a communication request on the above-mentioned overlapping frequency domain resources.
  • the second terminal device may also feed back communication authorization and confirmation information on the above-mentioned overlapping frequency domain resources.
  • the communication request may carry an identifier of the first terminal device, or BWP configuration information used by the first terminal device for sidelink communication.
  • the communication authorization and confirmation information may carry the identifier of the second terminal device, or the BWP configuration information used by the second terminal device for side link communication.
  • a dedicated BWP can be used to realize the side link connection and the side link communication without BWP switching, which improves the efficiency of the side link communication.
  • FIG. 8 provides a flow of a communication method.
  • the first terminal device and the second terminal device in the flow may be the terminal device 120 in the flow shown in FIG. 1, and the flow is:
  • the first terminal device performs sidelink communication with the second terminal device on the first BWP.
  • the first terminal device switches to the second BWP and establishes a side link connection with the third terminal device, where the second BWP includes a pre-configured BWP or a public BWP.
  • the first terminal device may send a handover request to the network device.
  • the network device may send a BWP configuration to the first terminal device.
  • the first terminal device switches to the first terminal device according to the BWP configuration.
  • On the second BWP establish a side link connection with the third terminal device.
  • switching request is also referred to as a “fallback request”
  • switching to the second terminal device is also referred to as “falling back to the second terminal device”.
  • the first BWP is a dedicated BWP, corresponding to the first system parameter
  • the second BWP can be a pre-configured BWP, a public BWP, or a fallback BWP configured by a network device, corresponding to the second system parameter, the first system parameter and the second system parameter Take the different system parameters as an example.
  • the first terminal device can perform side-link communication in the dedicated BWP. If the first terminal device believes that there is no communication demand for a period of time in the future, the first terminal device can report a fallback request to the network device and fall back to the pre-configured BWP, Public BWP or fallback BWP configured by the base station.
  • the BWP switching of the terminal device can be implemented in two different ways.
  • the first is that the terminal device can be configured with at most one dedicated BWP, and at most one pre-configured or public BWP, so that when the terminal device switches the BWP , Is to activate the second BWP and deactivate the first BWP.
  • the second is that the terminal device can configure at most one BWP.
  • the BWP includes a dedicated BWP, pre-configured and public BWP. When the terminal device switches the BWP, it reconfigures a BWP and activates the BWP at the same time.
  • the network equipment configures different BWPs for the terminal equipment, and uses different BWPs to realize side link connection and side link communication, which improves the utilization rate of different BWPs and improves the efficiency of side link communication.
  • a communication process in which core network equipment and access network equipment can correspond to the network equipment in Figure 1, Figure 4, Figure 6 and Figure 7, and UE1 can correspond to Figure 1 above.
  • Figure 4, Figure 6 and Figure 7, the first terminal device, UE2 can correspond to the above-mentioned Figure 1, Figure 4, Figure 6 and Figure 7 the second terminal device, using this process can be implemented for the terminal device configuration BWP, the The process includes:
  • the core network device sends a sidelink service authorization to UE1, and configures a pre-configured BWP for UE1.
  • the core network device sends a sidelink service authorization to UE2, and configures a pre-configured BWP for UE2.
  • the process shown in FIG. 9 may further include: S903.
  • the core network device sends the sidelink service authorization of UE1 and UE2 to the access network device.
  • the process shown in FIG. 9 may further include: S904.
  • UE1 and/or UE2 report side link resource configuration information to the access network device.
  • the side link resource configuration information may include the frequency band that the UE is interested in, service characteristics, requested side link resources, ProSe per packet priority (PPPP), target layer layer 2 identification, etc. .
  • PPPP ProSe per packet priority
  • the UE1 reporting side link resource configuration information is taken as an example, which is not a limitation of the present application.
  • the access network device configures the dedicated BWP and/or the public BWP to the UE1.
  • the access network device configures the dedicated BWP and/or the public BWP to the UE2.
  • UE1 and UE2 can use the methods shown in Figure 4, Figure 6 and Figure 7 above , Perform side link connection and side link communication.
  • the process of the side link may be: UE1 sends a communication request to UE2, and UE2 sends authorization and communication relationship confirmation to UE1.
  • the process of side link communication can specifically work in the base station scheduling mode, or it can work in the UE self-sensing mode. In the example shown in FIG. 9, it is described as an example of working in the base station scheduling mode, with UE1 being the transmitting end and UE2 being the receiving end.
  • UE1 sends a sidelink communication request to UE2.
  • UE2 sends authorization and communication relationship confirmation to UE1.
  • UE1 sends a scheduling request to the access network device.
  • the access network device sends DCI to UE1, where the DCI is used to indicate scheduling resources.
  • UE1 performs sidelink communication with UE2 on the scheduling resource indicated by the DCI.
  • the process of side-link communication may be sending SCI and data.
  • the methods provided in the embodiments of the present application are introduced from the perspective of network equipment, terminal, and interaction between the network equipment and the terminal.
  • the network device and the terminal may include hardware structures and/or software modules, and the above functions are implemented in the form of hardware structures, software modules, or hardware structures plus software modules. Whether one of the above-mentioned functions is executed in a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.
  • an embodiment of the present application further provides an apparatus 1200 for implementing the function of the first terminal device in the above-mentioned method.
  • the device can be a terminal device or a device in a terminal device.
  • the device may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device 1200 may include:
  • the processing module 1201 is configured to use the first system parameter on the first time unit and the first bandwidth part BWP, establish a side link connection with the second terminal device, and use the second system parameter on the second time unit and the second BWP , Perform sidelink communication with the second terminal device.
  • the apparatus 1200 may further include: a transceiver module 1202, configured to send or receive side link signals or information.
  • the processing module 1201 and the transceiver module 1202 please refer to the record in the above method embodiment.
  • the division of modules in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods.
  • the functional modules in the various embodiments of the present application may be integrated into one process. In the device, it can also exist alone physically, or two or more modules can be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • an embodiment of the present application provides a device 1300 for implementing the function of the first terminal device in the above method.
  • the device may be a terminal device or a device in a terminal device.
  • the apparatus 1300 includes at least one processor 1301, configured to implement the function of the first terminal device in the foregoing method.
  • the processor 1301 may use the first system parameter on the first time unit, the first bandwidth part BWP, establish a side link connection with the second terminal device, and use the second system on the second time unit, the second BWP
  • the processor 1301 may use the first system parameter on the first time unit, the first bandwidth part BWP, establish a side link connection with the second terminal device, and use the second system on the second time unit, the second BWP
  • side link communication with the second terminal device please refer to the detailed description in the method for details, which will not be described here.
  • the device 1300 may further include at least one memory 1302 for storing program instructions and/or data.
  • the memory 1302 is coupled with the processor 1301.
  • the coupling in the embodiments of the present application is an interval coupling or a communication connection between devices, units or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 1301 may operate in cooperation with the memory 1302.
  • the processor 1301 may execute program instructions stored in the memory 1302. At least one of the at least one memory may be included in the processor.
  • the apparatus 1300 may further include a communication interface 1303 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 1300 can communicate with other devices.
  • the communication interface 1303 may be a transceiver, circuit, bus, module, or other type of communication interface, and the other device may be a second terminal device or a network device.
  • the processor 1301 uses the communication interface 1303 to send and receive data, and is used to implement the method in the foregoing embodiment.
  • the embodiment of the present application does not limit the connection medium between the communication device 1303, the processor 1301, and the memory 1302.
  • the memory 1302, the processor 1301, and the communication interface 1303 are connected by a bus 1304 in FIG. 13.
  • the bus is represented by a thick line in FIG. 13, and the connection mode between other components is only for schematic illustration. , Is not limited.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in FIG. 13, but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and it may implement or Perform the methods, steps, and logic block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), for example Random-access memory (random-access memory, RAM).
  • the memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function, for storing program instructions and/or data.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented by 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, network equipment, user equipment, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • 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 may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital video disc (digital video disc, DVD for short)), or a semiconductor medium (for example, SSD).
  • At least one refers to one or more, and “multiple” refers to two or more.
  • And/or describes the association relationship of the associated objects, indicating that there can be three 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, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an “or” relationship.
  • "The following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • At least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

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Abstract

La présente invention concerne un procédé et un appareil de communication. Ledit procédé comprend : l'établissement par un premier dispositif terminal, dans une première unité temporelle et sur une première partie de bande passante (BWP), d'une connexion de liaison latérale avec un second dispositif terminal à l'aide d'un premier paramètre de système; et la réalisation par le premier dispositif terminal, dans une seconde unité temporelle et sur une seconde BWP, d'une communication de liaison latérale avec le second dispositif terminal à l'aide d'un second paramètre de système. Le procédé et l'appareil de la présente invention permettent à un dispositif terminal d'utiliser une BWP pour effectuer une connexion de liaison latérale et une communication de liaison latérale.
PCT/CN2020/073917 2019-02-15 2020-01-22 Procédé et appareil de communication WO2020164391A1 (fr)

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