WO2020142932A1 - Procédé d'envoi de données, appareil associé et système de communication - Google Patents

Procédé d'envoi de données, appareil associé et système de communication Download PDF

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Publication number
WO2020142932A1
WO2020142932A1 PCT/CN2019/070995 CN2019070995W WO2020142932A1 WO 2020142932 A1 WO2020142932 A1 WO 2020142932A1 CN 2019070995 W CN2019070995 W CN 2019070995W WO 2020142932 A1 WO2020142932 A1 WO 2020142932A1
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WIPO (PCT)
Prior art keywords
bwp
side link
uplink
terminal device
resource
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Ceased
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PCT/CN2019/070995
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English (en)
Chinese (zh)
Inventor
纪鹏宇
李国荣
成慧婷
张健
王昕�
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Fujitsu Ltd
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Fujitsu Ltd
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Priority to PCT/CN2019/070995 priority Critical patent/WO2020142932A1/fr
Publication of WO2020142932A1 publication Critical patent/WO2020142932A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications, and in particular, to a data transmission method, device, and communication system.
  • V2X vehicle to X
  • V2X vehicle to X
  • V2X vehicle to X
  • V2X vehicle to X
  • V2X applications will improve driving safety, reduce congestion and vehicle energy consumption, improve traffic efficiency and in-vehicle entertainment information. It is based on vehicle-to-vehicle (V2V, Vehicle-to-Vehicle), vehicle-to-pedestrian (V2P, Vehicle-to-Pedestrian), vehicle-to-road side infrastructure (V2I, Vehicle-to-Infrastructure) and vehicle and application server (V2N , Vehicle-to-Network) communication, wireless communication and information exchange and processing between vehicles-X (V2X: vehicles, roads, pedestrians, Internet, etc.).
  • V2V Vehicle-to-Vehicle
  • V2P Vehicle-to-pedestrian
  • V2I Vehicle-to-Pedestrian
  • V2I Vehicle-to-Infrastructure
  • V2N Vehicle-to-Network
  • V2X services can be provided in two ways: PC5 interface, and Uu interface.
  • the PC5 interface is an interface defined on the basis of a side link (sidelink). With this interface, terminal devices can directly communicate and transmit, that is, side link transmission.
  • V2X terminal equipment can use either the resources scheduled in the resource pool (mode 1) or the resources (mode 2) independently selected in the resource pool (resource) for data Of sending and receiving.
  • LTE Long-Term Evolution
  • BWP BandwidthPart
  • a terminal device can be simultaneously configured with multiple uplink or downlink partial bandwidths (BWP, bandwidth) parts, for example, for radio resource control idle (RRC)
  • BWP uplink or downlink partial bandwidths
  • RRC radio resource control idle
  • the terminal device in the idle state is configured with an initial BWP (initial BWP) from the broadcast message.
  • multiple BWP can be configured for the terminal device, one of which is designated as the default BWP (default BWP), And one of the BWPs (active BWP) can be activated for data transmission and reception, and within a predetermined time, one of the BWPs can be activated so that the user equipment can transmit and receive data in the resources allocated on the activated upstream and downstream BWPs within the predetermined time. Since multiple upstream or downstream BWPs are configured, the activated BWP can be switched according to the actual data transmission needs.
  • the side link BWP (SL BWP) can also be configured for the V2X terminal device, and the configured side link BWP is activated, and the side is sent and received on the activated side link BWP resource Link data.
  • the V2X terminal device can only use the upstream frequency point of the Uu interface, but the inventor found that if the V2X terminal device When both the upstream BWP (UL BWP) and the side link BWP are configured, especially when the two use the same radio frequency unit, there is currently no way to ensure the normal transmission and reception of side link data.
  • the embodiments of the present invention provide a data transmission method, a device thereof, and a communication system.
  • a data transmission method includes:
  • the terminal device switches from the first uplink BWP to the second uplink BWP, wherein the configured side The link BWP corresponds to the second uplink BWP;
  • the terminal device sends and/or receives side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • a data transmission method includes:
  • the terminal device overlaps the frequency domain resource Internally select the resource pool for side link transmission;
  • the terminal device sends side link data on the resource selected in the resource pool.
  • a data transmission method includes:
  • the terminal device receives indication information sent by the network device, where the indication information indicates time-domain resources in a resource pool used for side link transmission;
  • the terminal device switches from the currently activated first uplink BWP to the second uplink BWP;
  • the terminal device sends side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • a data sending apparatus wherein the apparatus includes:
  • a first switching unit configured to switch from the first upstream BWP to the second upstream BWP when the configured side link partial bandwidth (BWP, BandwidthPart) does not correspond to the currently activated first upstream BWP; ,
  • the configured side link BWP corresponds to the second uplink BWP;
  • the first transceiver unit is configured to send and/or receive side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • a data sending device where the device includes:
  • the processing unit is configured to: when the configured side link BWP does not correspond to the currently activated first uplink BWP, and when the first uplink BWP frequency domain resource overlaps with the side link BWP frequency domain resource, Select the resource pool used for side link transmission within the coincidence frequency domain resources;
  • a second transceiving unit which is used to send side link data on the resource selected in the resource pool.
  • a data sending apparatus wherein the apparatus includes:
  • a fifth receiving unit configured to receive indication information sent by a network device, where the indication information indicates time-domain resources in a resource pool used for side link transmission;
  • a second switching unit configured to switch from the currently activated first uplink BWP to the second uplink BWP before the time domain resource indicated by the indication information arrives;
  • a third transceiving unit configured to send side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • a communication system includes a network device and a terminal device, and the terminal device includes the data transmission device according to the foregoing first aspect or second aspect or third aspect.
  • the beneficial effect of the embodiment of the present invention is that when the V2X terminal device is configured with both the uplink BWP (UL BWP) and the side link BWP, when the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device is activated from The uplink BWP is switched to the uplink BWP corresponding to the side link BWP, or the terminal device does not perform the uplink BWP switch, but selects for the side link within the frequency domain resources of the coincidence of the side link BWP and the currently activated uplink BWP.
  • UL BWP uplink BWP
  • the terminal device is activated from The uplink BWP is switched to the uplink BWP corresponding to the side link BWP, or the terminal device does not perform the uplink BWP switch, but selects for the side link within the frequency domain resources of the coincidence of the side link BWP and the currently activated uplink BWP.
  • the resource pool for transmission; or before the time-domain resource in the resource pool for side-link transmission indicated by the indication information is switched from the currently activated upstream BWP to the upstream BWP corresponding to the side-link BWP, thereby ensuring the edge
  • the normal transmission and reception of link data is switched from the currently activated upstream BWP to the upstream BWP corresponding to the side-link BWP, thereby ensuring the edge
  • FIG. 1 is a schematic diagram of the communication system of this embodiment
  • Embodiment 2 is a schematic diagram of the data transmission method in Embodiment 1;
  • 3A-3B are schematic diagrams of the correspondence between SL BWP and UL BW;
  • Embodiment 4 is a schematic diagram of a data transmission method in Embodiment 2.
  • FIG. 6 is a schematic diagram of SL BWP configuration of a terminal device in the current cell coverage and in an RRC idle state;
  • FIG. 7 is a schematic diagram of a data transmission method in Embodiment 3.
  • Embodiment 8 is a schematic diagram of a data transmission method in Embodiment 4.
  • FIG. 9 is a schematic diagram of the frequency domain resources of the configured side link BWP and the currently activated first uplink BWP;
  • FIG. 10 is a schematic diagram of a data transmission method in Embodiment 5.
  • FIG. 11 is a schematic diagram of uplink BWP autonomously activated according to semi-static indication information
  • FIG. 12 is a schematic diagram of a bandwidth switching indication method in Embodiment 6;
  • FIG. 13 is a schematic structural diagram of a data transmission device in Embodiment 7.
  • FIG. 14 is a schematic structural diagram of a data transmission device in Embodiment 7.
  • FIG. 15 is a schematic structural diagram of a data transmission device in Embodiment 7.
  • FIG. 16 is a schematic structural diagram of a data transmission device in Embodiment 8.
  • FIG. 17 is a schematic structural diagram of a data transmission device in Embodiment 9;
  • FIG. 21 is a schematic structural diagram of a terminal device in Embodiment 11.
  • FIG. 22 is a schematic structural diagram of a network device in Embodiment 11.
  • the terms “first”, “second”, etc. are used to distinguish different elements in terms of titles, but do not mean the spatial arrangement or chronological order of these elements, and these elements should not be used by these terms Restricted.
  • the term “and/or” includes any and all combinations of one or at least two of the associated listed terms.
  • the terms “comprising”, “including”, “having” and the like refer to the presence of stated features, elements, elements or components, but do not exclude the presence or addition of one or at least two other features, elements, elements or components.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any of the following communication standards, such as fifth-generation new radio access (5G, NR, New Radio Access), long-term evolution (LTE, Long term), enhanced long-term evolution (LTE-A, LTE-Advanced), wideband code division multiple access (WCDMA, Wideband Code Division Multiple Access), high-speed message access (HSPA, High-Speed Packet Access) and many more.
  • 5G, NR, New Radio Access fifth-generation new radio access
  • LTE long-term evolution
  • LTE-A enhanced long-term evolution
  • WCDMA Wideband Code Division Multiple Access
  • High-speed message access HSPA, High-Speed Packet Access
  • the communication between devices in the communication system can be performed according to any stage of the communication protocol, for example, it can include but is not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G , New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
  • 1G generation
  • 2G 2.5G
  • 2.75G 3G
  • 5G New Radio
  • NR, New Radio New Radio
  • Network device refers to, for example, a device that connects a terminal device to a communication network and provides services for the terminal device in a communication system.
  • Network equipment may include but is not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB) and 5G base station (gNB), etc., and may also include a remote radio head (RRH, Remote Radio Head) , Remote radio unit (RRU, Remote Radio Unit), relay (relay) or low power node (such as femto, pico, etc.).
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB 5G base station
  • the term “base station” may include some or all of their functions, and each base station may provide communication coverage for a specific geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, and may be a macro cell or a small cell, depending on the context in which the term is used.
  • the term "user equipment” (UE, User Equipment) or “terminal equipment” (TE, Terminal Equipment) refers to, for example, a device that accesses a communication network through a network device and receives network services.
  • the terminal equipment may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, and so on.
  • MS Mobile Station
  • SS subscriber station
  • AT Access Terminal
  • station station
  • symbol denotes resources in the time domain, that is, OFDM symbols.
  • terminal devices may include but are not limited to the following devices: cellular phones (Cellular), personal digital assistants (PDA, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
  • Cellular Cellular
  • PDA Personal Digital Assistant
  • wireless modems wireless communication devices
  • handheld devices machine-type communication devices
  • laptop computers Cordless phones
  • smart phones smart watches, digital cameras, etc.
  • the terminal device may also be a machine or device that performs monitoring or measurement.
  • the terminal device may include, but is not limited to: machine type communication (MTC, Machine Type Communication) terminal, Vehicle-mounted communication terminals, device-to-device (D2D, Device to Device) terminals, machine-to-machine (M2M, Machine to Machine) terminals, and so on.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention, and schematically illustrates a case where a terminal device and a network device are taken as an example.
  • the communication system 100 may include a network device 101 and terminal devices 102, 103.
  • FIG. 1 only uses the two terminal devices and one network device as examples for illustration, but the embodiment of the present invention is not limited thereto.
  • the embodiment of the present invention takes V2X of the NR system as an example for description, but the present invention is not limited to this, and the present invention is also applicable to other scenarios where similar problems exist.
  • the embodiments of the present invention are not limited to scenarios where the same carrier is used for uplink and side links, and only one set of radio frequency units can be used by the current carrier. The present invention is also applicable to other scenarios where similar problems exist.
  • FIG. 2 is a schematic diagram of the data transmission method of Embodiment 1, which is applied to the terminal device side. As shown in Figure 2, the method includes:
  • Step 201 When the configured side link BWP does not correspond to the currently activated first uplink BWP, the terminal device switches from the first uplink BWP to the second uplink BWP, where the configured side link BWP and the first Two upstream BWP correspondence;
  • Step 202 The terminal device sends and/or receives side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • the side link BWP, the first uplink BWP, and the second uplink BWP are pre-configured, or the network device is configured for the terminal device, where the frequency domain of the side link BWP and the uplink BWP can be determined
  • the location and/or size of the resource determines whether the side link BWP corresponds to the uplink BWP.
  • the configured side link BWP does not correspond to the uplink BWP, which means that the side link BWP frequency domain resource is not completely the same as the uplink BWP frequency domain resource, or the side link BWP frequency domain resource is not completely included in the The uplink BWP frequency domain resource;
  • the configuration of the side link BWP corresponding to the uplink BWP indicates that the side link BWP frequency domain resource is completely the same as the uplink BWP frequency domain resource, or the side link BWP frequency domain resource is completely included in the uplink BWP frequency
  • the frequency domain resource is exactly the same means that the center frequency point and bandwidth of the frequency domain are the same, and if it is not the same, it means that at least one of the frequency center center frequency point and the bandwidth is different;
  • the side link BWP frequency domain resource is completely Included in the uplink BWP frequency domain resource means that the start position and end position of the side link BWP frequency domain resource are both in the uplink BWP frequency domain resource (SL B
  • Figures 3A-3B are schematic diagrams of the correspondence between the side link BWP (SL BWP) and the uplink BWP (UL BWP).
  • SL BWP side link BWP
  • UL BWP uplink BWP
  • four UL BWPs are configured in the uplink direction, which are UL BWP 0, UL BWP1, UL BWP2, UL BWP3, on the side link, configure one SL BWP, SL BWP0, where, as shown in FIG.
  • SL BWP0 corresponds to UL BWP1, and UL BWP0, UL BWP 2, UL BWP 3 do not correspond, as shown in Figure 3B, SL BWP 0 and UL BWP 0, UL BWP 1, UL BWP 2, UL BWP 3 do not correspond.
  • the terminal device when the configured side link BWP does not correspond to the currently activated first uplink BWP, for example, the side link BWP frequency domain resource is not completely the same as the first uplink BWP frequency domain resource, or the side When the link BWP frequency domain resource is not completely included in the first uplink BWP frequency domain resource, because the first uplink BWP is the currently activated uplink BWP, and the side link BWP does not correspond to the first BWP, the terminal The device considers that SL BWP is inactive and cannot guarantee the normal transmission and reception of side link data. In steps 201-202, the terminal device switches from the first uplink BWP to the second uplink BWP corresponding to the side link BWP.
  • the terminal device After completion, the terminal device considers that the first UL BWP is deactivated, and considers that the second uplink BWP is activated together with the SL BWP. Therefore, it can send and/or receive on the resource of the side link BWP corresponding to the second uplink BWP Side link data to ensure the normal transmission and reception of side link data.
  • the terminal device sends and/or receives the side chain on the resource of the side link BWP corresponding to the first uplink BWP. ⁇ Road data.
  • the terminal device when sending and receiving side link data, the terminal device is aligned with the side link BWP of the opposite terminal device and activated, thereby ensuring the normal sending and receiving of the side link data.
  • the terminal device of V2X can use the resource (mode 1) scheduled in the resource pool (resource) or the resource (mode 2) independently selected in the resource pool for data transmission and reception. Therefore, in the following, mode 1 and mode 2 will be taken as examples, and further description will be made in combination with embodiment 2-3, respectively.
  • FIG. 4 is a schematic diagram of the data transmission method of Embodiment 2, which is applied to the terminal device side.
  • the method includes:
  • Step 401 The terminal device receives the downlink control information sent by the network device to schedule the transmission of the side link;
  • Step 402 when receiving the downlink control information, and when the configured side link BWP does not correspond to the currently activated first uplink BWP, the terminal device terminal device switches from the first uplink BWP to the configured side On the second upstream BWP corresponding to the link BWP;
  • Step 403 The terminal device sends side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • the downlink control information is used for scheduling side link transmission.
  • the format may be the DCI format used for side link scheduling.
  • the terminal device may use DCI Whether the cyclic check code (CRC) is temporarily identified by the RNTI Radio Network (Temporary Identity), such as SL-V-RNTI or SL-SPS-V-RNTI to identify whether the DCI is used for scheduling DCI transmitted by the side link, for example, the terminal equipment blindly detects the physical downlink control channel (PDCCH), and successfully descrambles the SL-V-RNTI or SL-SPS-V-RNTI to read the DCI, and determines that the DCI is used for Scheduling side link transmission.
  • RNTI Radio Network such as SL-V-RNTI or SL-SPS-V-RNTI
  • the DCI used to schedule the transmission of the side link can be used to implicitly indicate the switching of the upstream BWP, that is, in step 402, when the DCI is received, and the configured side link BWP and When the currently activated first upstream BWP does not correspond, the terminal device considers that the configured side link BWP is not activated, and the terminal device switches from the first upstream BWP to the second upstream BWP corresponding to the configured SL BWP. After the handover is completed After that, the terminal device considers that the first upstream BWP is deactivated, and considers that the configured SL BWP and the second upstream BWP are activated together.
  • the terminal device when the DCI is received, and when the configured side link BWP corresponds to the currently activated first uplink BWP, the terminal device does not switch the uplink BWP.
  • the terminal device when the DCI is received, and when the configured side link BWP corresponds to the currently activated first uplink BWP, the terminal device does not switch the uplink BWP.
  • FIG. 5 is a schematic diagram of handover after receiving DCI in this embodiment.
  • the terminal device switches from the activated UL BWP 0 (first upstream BWP) to UL BWP 1 (second Upstream BWP, corresponding to SL BWP), and that UL BWP 0 is deactivated, and that UL BWP 1 and its corresponding SL BWP 0 are activated.
  • the DCI in step 401 may also indicate the time domain (which symbols, subframes, frames, time slots, etc.) and/or frequency domain resources of the transmission of the side link data.
  • the terminal The device sends the sidelink data on the time domain indicated by the downlink control information and/or the indicated frequency domain resource in the sidelink BWP
  • the terminal device when the configured SL does not correspond to the first upstream BWP, the terminal device performs UL BWP switching. When the configured SL corresponds to the first upstream BWP, the terminal device does not perform UL BWP switching.
  • the following further describes how to configure the SL BWP.
  • the method may further include: (not shown)
  • the terminal device in the RRC connected state receives the first configuration information of the side link BWP sent by the network device, where the first configuration information is used to configure the side link BWP, the side link BWP and one of the configured upstream BWP Corresponding to the upstream BWP, and/or the side-link BWP and the side-link BWP configured in the current cell broadcast message or the pre-configured side-link BWP have overlapping frequency domain resources, where the overlapping frequency domain resources include In a resource pool for link transmission, a terminal device can perform data transmission on resources scheduled in the resource pool.
  • the side link BWP may be configured to correspond to one of up to four configured upstream BWPs, as shown in FIG. 3A above. It can be stated that SL can be configured to correspond to UL BWP 1 during configuration. For example, when the corresponding indicates that the frequency domain resources are completely the same, the side link BWP can be configured by the identification ID of the UL BWP, as shown in FIG.
  • the first configuration information can configure the ID of the UL BWP 1 to be SL BWP, and implicitly indicate that the SL BWP0 corresponds to the UL BWP 1 (that is, SL BWP 0 and UL BWP 1 frequency domain resources are completely the same).
  • the side link BWP may be configured to have a frequency domain resource that coincides with the side link BWP or the pre-configured side link BWP configured by the current cell broadcast message (SIB), wherein the SIB configuration
  • the side link BWP is the SL BWP (hereinafter referred to as the first SL BWP) configured for the terminal device within the current cell coverage and in the RRC idle state.
  • the pre-configured side link BWP is outside the current cell coverage, but The BWP pre-configured by the terminal equipment working on the uplink frequency and carrier of the current cell.
  • the overlapping frequency domain resources include a resource pool for side link transmission, that is, the overlapping frequency domain
  • the resource has a resource pool that can be used for side-link data transmission.
  • the terminal device can perform data transmission on the resource scheduled in the resource pool. For example, the terminal device can send a broadcast message on the coincident frequency domain resource.
  • the first configuration information of the side link BWP is carried through radio resource control (RRC) dedicated signaling, but this embodiment is not limited thereto.
  • RRC radio resource control
  • the method may further include: (not shown) being in the current cell
  • the terminal device within the coverage and in the RRC idle state receives the broadcast message, and the side link BWP configured by the broadcast message corresponds to the initial uplink BWP of the current cell; for the ones that are outside the coverage of the current cell but work on the uplink frequency and carrier of the current cell
  • its pre-configured side link BWP corresponds to the initial uplink BWP of the current cell (for the corresponding meaning, refer to Embodiment 1, which will not be repeated here).
  • the configured side link BWP corresponds to the initial uplink BWP of the current cell, that is, the configured SL BWP and the initial The frequency domain resources of the upstream BWP are completely the same, or the frequency domain resources of the configured SL BWP are completely included in the frequency domain resources of the initial upstream BWP.
  • the method may further include: (not shown) a terminal in the current cell coverage and in the RRC idle state
  • the device receives a broadcast message, and the sideline BWP configured in the broadcast message is a common sidelink BWP of the terminal device using the current cell carrier; for terminal devices that are outside the coverage of the current cell but work on the uplink frequency and carrier of the current cell ,
  • the pre-configured side link BWP is a common side link BWP of the terminal device using the current cell carrier.
  • the terminal device when the V2X terminal device is configured with both the uplink BWP (UL BWP) and the side link BWP, when the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • UL BWP uplink BWP
  • the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • FIG. 7 is a schematic diagram of the data transmission method of Embodiment 3, which is applied to the terminal device side.
  • the terminal device works in mode 2 that is, the resource used by the terminal device to send the sidelink data is independently selected from the resource pool; the difference from Embodiment 2 is that there is sidelink data to be sent at the terminal device, and
  • the terminal device needs to actively send a handover request to the network device.
  • the method includes:
  • Step 701 the terminal device sends handover request indication information to the network device, and the handover request indication information is used to instruct the terminal device to request uplink BWP handover;
  • Step 702 the terminal device receives handover instruction information sent by the network device, and the handover instruction information is used to instruct the terminal device to perform uplink BWP handover;
  • Step 703 When receiving the handover instruction information, when the configured side link BWP does not correspond to the currently activated first uplink BWP, the terminal device terminal device switches from the first uplink BWP to the second uplink BWP.
  • Step 704 The terminal device sends side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • step 701 when the configured side link BWP does not correspond to the currently activated first uplink BWP, the terminal device considers that the configured side link BWP is not activated, and the terminal device may send the handover request indication information to the network device to To apply for UL BWP handover for this network device.
  • the handover request indication information may be indicated by a scheduling (SR) request
  • the scheduling request is used to request the network device to send the sidelink data resources
  • the terminal device is configured in the network device to send the
  • the scheduling request is sent on an uplink resource (hereinafter referred to as a first resource) of the scheduling request.
  • the network device can distinguish whether the scheduling request is used to implicitly instruct the terminal device to request uplink BWP switching according to the resource carrying the SR; for example, the network device receives the request sent by the terminal device on the first resource When sending the SR of the side link data resource, that is, when the terminal device selects the resource for sending the SR as the SR resource (first resource) corresponding to the side link service request configured by the network device, the network device determines that the SR is a side link resource application , The network device can send the switching instruction information to the terminal device, when the network device receives the SR sent by the terminal device on the second resource (the SR is used to request the network device to send uplink data resources), that is, the terminal device chooses to send When the SR resource is an SR resource (second resource) corresponding to the uplink service request configured by the network device, the network device determines that the SR is an uplink resource request, and the network device does not need to send the handover indication information.
  • the handover request indication information is indicated by a random access preamble or physical random access channel (PRACH) resource, and the network device may determine the random access by selecting a sequence or PRACH resource for sending the random access preamble by the terminal device.
  • the preamble sequence or PRACH resource is an application for a side link resource, and the network device can send the handover instruction information to the terminal device.
  • the handover request indication information is indicated by a buffer status report (BSR), the BSR includes a logical channel group identifier corresponding to the side link data, the network device receives the BSR, and determines that the BSR includes the side link When the logical channel group identifier corresponding to the data determines that the terminal device has side link data to be sent, the network device can send the switching instruction information to the terminal device.
  • BSR buffer status report
  • the terminal device receives handover instruction information sent by the network device, and the handover instruction information is used to instruct the terminal device to perform uplink BWP handover; wherein, the handover instruction information may be used in Embodiment 1 to schedule a side link
  • the transmitted downlink control information may alternatively be downlink control information for scheduling uplink transmission, or other types of downlink control information, which is not limited in this embodiment.
  • step 703 when receiving the handover instruction information, and when the configured side link BWP does not correspond to the currently activated first uplink BWP, the terminal device considers that the configured side link BWP is not activated, and the terminal device The first upstream BWP is switched to the second upstream BWP corresponding to the configured SL BWP. After the handover is completed, the terminal device considers that the first upstream BWP is deactivated, and that the configured SL BWP and the second upstream BWP are activated together.
  • Embodiment 1 for details, and no more details are provided here.
  • the terminal device can autonomously select frequency domain resources in the side link BWP to send the side link data.
  • the terminal device when the configured side link BWP corresponds to the currently activated first uplink BWP, there is no need to perform handover, and the terminal device does not need to send a handover request indication information to the network device.
  • the terminal device corresponds to the first uplink BWP Send and/or receive side link data on the resources of the side link BWP (the terminal device autonomously selects, you can refer to the existing technology, which will not be repeated here).
  • the terminal device when the V2X terminal device is configured with both the uplink BWP (UL BWP) and the side link BWP, when the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • UL BWP uplink BWP
  • the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • FIG. 8 is a flowchart of the data transmission method of Embodiment 4 applied to the terminal device side.
  • the difference from Embodiment 1-3 is that in this embodiment, when the terminal device has side link data to be sent, and the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device does not The uplink BWP switching is performed, and the resource pool used for the side link transmission is selected in the frequency domain resources of the coincidence of the side link BWP and the currently activated uplink BWP, as described in detail below.
  • the method includes:
  • Step 801 when the configured side link BWP does not correspond to the currently activated first uplink BWP, and when the first uplink BWP frequency domain resource and the side link BWP frequency domain resource overlap, the terminal device is in the overlapping frequency domain Select the resource pool for side link transmission within the resource;
  • Step 802 the terminal device sends side link data on the selected resource in the resource pool.
  • step 801 for the description that the configured side link BWP does not correspond to the currently activated first uplink BWP, please refer to Embodiment 1, which will not be repeated here.
  • step 801 it is determined whether the first uplink BWP frequency domain resource overlaps with the side link BWP frequency domain resource (that is, the first uplink BWP frequency domain resource and the side link BWP frequency domain resource include at least a part of the same Frequency domain resource), when there is a coincident part, the terminal device does not perform uplink BWP switching, and selects a resource pool for side link transmission within the coincident frequency domain resource.
  • FIG. 9 is a schematic diagram of the frequency domain resources of the configured side link BWP and the currently activated first upstream BWP.
  • SL BWP is not completely included in the first upstream BWP, so the SL BWP and the first upstream BWP Not corresponding, but the frequency domain resources of the SL BWP and the first uplink BWP have overlapping parts.
  • the overlapping frequency domain resources include 4 resource pools that can be used for side link transmission.
  • the terminal device selects within the overlapping frequency domain resources Resource pool for side link transmission (for example, select a resource pool A).
  • step 802 the terminal device selects a resource for sending side link data in the selected resource pool, and sends the side link data on the selected resource. That is, this embodiment is directed to the case where the terminal device works in mode 2, that is, the resources used by the terminal device to transmit sidelink data are independently selected from the resource pool, and the implementation mode of mode 2 for selecting resources can refer to the prior art, and will not Repeat.
  • the terminal device when the configured side link BWP does not correspond to the currently activated first uplink BWP, and the first uplink BWP frequency domain resource does not overlap with the side link BWP frequency domain resource, the terminal device Reference may be made to the method in Embodiment 2 to send switching request indication information and perform uplink BWP switching to ensure normal transmission and reception of side link data.
  • the terminal device when the V2X terminal device is configured with both the uplink BWP (UL BWP) and the side link BWP, when the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device does not perform uplink BWP switching.
  • the resource pool used for the transmission of the side link is selected in the frequency domain resources of the coincidence of the side link BWP and the currently activated uplink BWP, thereby ensuring the normal transmission and reception of the side link data.
  • this embodiment 5 also proposes a method of using the above semi-static configuration information or dynamic configuration information to indicate uplink BWP switching
  • FIG. 10 is a schematic diagram of a data transmission method according to Embodiment 5 and applied to the terminal device side. As shown in FIG. 10, the method includes:
  • Step 1001 The terminal device receives indication information sent by the network device, where the indication information indicates time domain resources contained in the resource pool for side link transmission;
  • Step 1002 The terminal device switches from the currently activated first uplink BWP to the second uplink BWP before the time domain resource indicated by the indication information arrives;
  • Step 1003 The terminal device sends side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • the indication information is semi-static indication information, indicating time-domain resources in a resource pool used for side link transmission
  • the semi-static indication information may be a bitmap .
  • the bit value of the bitmap is 1, it indicates that the corresponding time-domain resources (such as subframes, symbols, etc.) are included in the resource pool and can be used for data transmission and reception by the V2X UE.
  • the bit value of the bitmap is When 0, it indicates that the corresponding time-domain resources (such as subframes, symbols, etc.) are not included in the resource pool, where the time-domain resources indicated by the bitmap may be uplink time-domain resources.
  • the terminal device In the time domain resource in the resource pool indicated by the indication information (for example, the time domain resource with a bitmap indication of 1), the terminal device needs to ensure that SL BWP is activated. Therefore, before the time domain resource in the resource pool indicated by the indication information arrives , The terminal device autonomously switches from the currently activated first upstream BWP to the second upstream BWP; in other words, within the time domain resource indicated by the indication information, such as bitmap bit 0, the terminal device switches and activates After the second UL BWP is switched, it is ensured that the SL BWP corresponding to the second uplink BWP is activated in the time domain resource in the resource pool indicated by the indication information (for example, the time domain resource whose bitmap indication is 1).
  • FIG. 11 is a schematic diagram of autonomously switching the activated upstream BWP according to the semi-static indication information.
  • the terminal device performs UL BWP switching.
  • the bitmap indication may be 0 is switched within the length of a predetermined time domain resource that is located later in the time domain resource.
  • the length unit of the predetermined time domain resource may be a time slot, subframe, symbol, etc.
  • the length of the predetermined time domain resource may be a predetermined number Time slots, a predetermined number of subframes, or a predetermined number of symbols, etc., this embodiment is not limited to this, for the time-domain resource with a bitmap indication of 1 (for example, the end of the time-domain resource with a bitmap indication of 0) Location, that is, the start position of the time domain resource with the bitmap indication of 1), the terminal device completes the UL BWP switching, thereby ensuring that SL BWP is activated in the time domain resource with the bitmap indication of 1.
  • the indication information is dynamic downlink control information, indicating time domain resources in the resource pool used for side link transmission, for example, time domain resources can be dynamically configured through DCI
  • the transmission direction type is configured as S (side link type)
  • the format of the DCI may be the existing format 2_0, this embodiment is not limited to this.
  • the terminal device In the time domain resource in the resource pool indicated by the indication information (for example, the time domain resource in which the DCI indicates the transmission direction type is S), the terminal device needs to ensure that SL BWP is activated, so , Before the time domain resource in the resource pool indicated by the indication information arrives, the terminal device autonomously switches from the currently activated first uplink BWP to the second uplink BWP; in other words, the indication information indicates, for example, a DCI indication Before the time domain resource with the transmission direction type S arrives, the terminal device switches and activates the second UL BWP after the switch. Therefore, the time domain resource in the resource pool indicated by the indication information is guaranteed (for example, the DCI indicates the transmission direction type is In the time domain resource of S), the SL BWP corresponding to the second uplink BWP is activated.
  • step 1003 the terminal device sends the side link data on the time domain resource in the resource pool indicated by the indication information and the frequency domain resource of the side link BWP corresponding to the second uplink BWP.
  • the currently activated upstream BWP is switched to the upstream BWP corresponding to the side link BWP, thereby ensuring the side chain Normal transmission and reception of road data.
  • the sixth embodiment also provides a bandwidth switching indication method. Corresponding to the data transmission method on the terminal device side in Embodiment 1-3, the description of the same content is not repeated.
  • FIG. 12 is a schematic diagram of the bandwidth switching indication method of Embodiment 6 applied to the network device side. As shown in FIG. 12, the method includes:
  • Step 1201 the network device generates switching instruction information
  • Step 1202 the network device sends handover instruction information to the terminal device; the handover instruction information is used to instruct the terminal device to perform uplink BWP handover.
  • the handover indication information when the terminal device is operating in mode 1, the handover indication information may be downlink control information used for scheduling side link transmission.
  • the terminal device receives After the switching instruction information, when the configured SL BWP does not correspond to the activated UL BWP, the upstream BWP is switched
  • the method may further include (not shown):
  • the network device receives the handover request indication information sent by the terminal device, and the handover request indication information is used to instruct the terminal device to request uplink BWP handover.
  • the handover request indication information For an implementation manner of the handover request indication information, reference may be made to Embodiment 3.
  • the network device When receiving the handover request indication information, the network device performs steps 1201-1202.
  • the handover indication information may be used for scheduling side link transmission in Embodiment 1.
  • the downlink control information may alternatively be downlink control information for scheduling uplink transmission, or other types of downlink control information, which is not limited in this embodiment.
  • the terminal device switches the upstream BWP when the configured SL BWP does not correspond to the activated UL BWP.
  • the handover request indication information may be indicated by a scheduling (SR) request
  • the scheduling request is used to request the network device to send the sidelink data resources
  • the terminal device is configured in the network device to send the
  • the scheduling request is sent on an uplink resource (hereinafter referred to as a first resource) of the scheduling request.
  • the network device can distinguish whether the scheduling request is used to implicitly instruct the terminal device to request uplink BWP switching according to the resource carrying the SR; for example, when the network device receives the request sent by the terminal device on the first resource and sends a side chain SR of the road data resource, that is, when the terminal device selects the SR resource to be sent as the SR resource (first resource) corresponding to the side link service request configured by the network device, the network device determines that the SR is a side link resource application That is, the switching instruction information can be sent to the terminal device, and when the network device receives the SR sent by the terminal device on the second resource (the SR is used to request the network device to send uplink data resources), that is, the terminal device selects the resource to send the SR When the SR resource (second resource) corresponding to the uplink service request is configured for the network device, the network device determines that the SR is an uplink resource request, and the network device does not need to send the handover indication information.
  • the method may further include (not shown, optional): the network device sends to the terminal device the information of the first resource and/or the second resource that it configures for the terminal device to send the SR information.
  • the handover request indication information is indicated by a random access preamble or physical random access channel (PRACH) resource, and the network device may determine the random access by selecting a sequence or PRACH resource for sending the random access preamble by the terminal device.
  • the preamble sequence or PRACH resource is an application for a side link resource, and the network device can send the handover instruction information to the terminal device.
  • the handover request indication information is indicated by a buffer status report (BSR), the BSR includes a logical channel group identifier corresponding to the side link data, the network device receives the BSR, and determines that the BSR includes the side link When the logical channel group identifier corresponding to the data determines that the terminal device has side link data to be sent, the network device can send the switching instruction information to the terminal device.
  • BSR buffer status report
  • the terminal device when the V2X terminal device is configured with both the uplink BWP (UL BWP) and the side link BWP, when the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • UL BWP uplink BWP
  • the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • Embodiment 7 also provides a data sending device, which is configured in a terminal device. Since the principle of the device to solve the problem is similar to the method of Embodiment 1-3, the specific implementation can refer to the implementation of the method of Embodiment 1-3, and the same content will not be repeated.
  • FIG. 13 is a schematic diagram of the data transmission device of the seventh embodiment. As shown in FIG. 13, the device 1300 includes:
  • the first switching unit 1301 is configured to switch from the first upstream BWP to the second upstream BWP when the configured sideband partial bandwidth (BWP, BandwidthPart) does not correspond to the currently activated first upstream BWP.
  • BWP configured sideband partial bandwidth
  • the configured side link BWP corresponds to the second uplink BWP;
  • the first transceiver unit 1302 is configured to send and/or receive side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • the configured side link BWP does not correspond to the uplink BWP, which means that the side link BWP frequency domain resource is not completely the same as the uplink BWP frequency domain resource, or the side link BWP frequency domain resource is not completely included in the The uplink BWP frequency domain resource; the configuration of the side link BWP corresponding to the uplink BWP indicates that the side link BWP frequency domain resource is completely the same as the uplink BWP frequency domain resource, or the side link BWP frequency domain resource is completely included in the uplink BWP frequency
  • the domain resources refer to Embodiment 1, which will not be repeated here.
  • the first transceiver unit 1302 when the configured side link BWP corresponds to the currently activated first uplink BWP, the first transceiver unit 1302 indicates in the time domain indicated by the downlink control information and/or indicated in the side link BWP The side link data is sent on the frequency domain resource, and the first switching unit 1301 does not perform BWP switching.
  • the first switching unit 1301 determines that the side link BWP and the second upstream BWP are activated, and determines the first upstream BWP go activate.
  • the first switching unit and the first transceiver unit reference may be made to Embodiment 1, and details are not described herein again.
  • FIG. 14 is a schematic diagram of the data sending apparatus of Embodiment 7.
  • the device 1400 includes: a first switching unit 1401 and a first transceiving unit 1402, the implementation of which is the same as the first switching unit 1301 and the first transceiving unit 1302, and details are not described herein again.
  • the device 1400 also includes:
  • the first switching unit 1401 switches from the first uplink BWP to the second uplink BWP.
  • the first transceiver unit 1402 sends the side link data on the time domain indicated by the downlink control information and/or the frequency domain resource indicated in the side link BWP.
  • the apparatus when the terminal device is processing the RRC connection state, the apparatus further includes:
  • a second receiving unit (not shown, optional), which is used to receive the first configuration information of the side link BWP sent by the network device, wherein the first configuration information is used to configure the side link BWP, and the side link BWP Corresponding to one of the configured uplink BWPs, and/or the side link BWP has coincident frequency domain resources with the side link BWP or the pre-configured side link BWP configured in the current cell broadcast message, where the coincident The frequency domain resource contains a resource pool for side link transmission.
  • the first configuration information of the side link BWP is carried through RRC dedicated signaling.
  • the apparatus when the terminal device is within the coverage of the current cell and is in the RRC idle state, the apparatus further includes:
  • a third receiving unit (not shown, optional), which is used to receive a broadcast message, the side link BWP configured in the broadcast message corresponds to the initial uplink BWP of the current cell, or the side link BWP configured in the broadcast message is used A common side link BWP of the terminal equipment of the current cell carrier;
  • the pre-configured side link BWP of the terminal device corresponds to the initial uplink BWP of the current cell, or,
  • the pre-configured side link BWP is a common side link BWP of the terminal device using the current cell carrier.
  • FIG. 15 is a schematic diagram of the data sending apparatus of Example 7.
  • the device 1500 includes: a first switching unit 1501 and a first transceiving unit 1502.
  • the implementation manner is the same as that of the first switching unit 1301 and the first transceiving unit 1302, and details are not described herein again.
  • the device also includes:
  • the first sending unit 1503 is used to send handover request indication information to the network device, and the handover request indication information is used to instruct the terminal device to request uplink BWP handover;
  • the fourth receiving unit 1504 is configured to receive the handover instruction information sent by the network device, and the handover instruction information is used to instruct the terminal device to perform uplink BWP handover;
  • the first switching unit 1501 switches from the first uplink BWP to the second uplink BWP.
  • the handover request indication information may be indicated by a scheduling request, which is used to request the network device to send resources for transmitting side link data, wherein the first sending unit 1503 is configured in the network device to send the scheduling The scheduling request is sent on the requested uplink resource.
  • the handover request indication information may be indicated by a random access preamble or physical random access channel resource or buffer status report, and the handover indication information is indicated by downlink control information.
  • the buffer status report contains the logical channel group identifier corresponding to the side link data.
  • the terminal device when the V2X terminal device is configured with both the uplink BWP (UL BWP) and the side link BWP, when the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • UL BWP uplink BWP
  • the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • the eighth embodiment also provides a data sending device, which is configured in a terminal device. Since the principle of the device to solve the problem is similar to the method of Embodiment 4, the specific implementation can refer to the implementation of the method of Embodiment 4, and the same content will not be repeated.
  • FIG. 16 is a schematic diagram of the data transmitting apparatus of the eighth embodiment. As shown in FIG. 16, the device 1600 includes:
  • the processing unit 1601 is configured to, when the configured side link BWP does not correspond to the currently activated first uplink BWP, and when the first uplink BWP frequency domain resource overlaps with the side link BWP frequency domain resource, Select the resource pool used for side link transmission in the frequency domain resources;
  • the second transceiving unit 1602 is used to send side link data on the selected resource in the resource pool.
  • the processing unit 1601 does not perform uplink BWP switching.
  • the configured side link BWP does not correspond to the uplink BWP, which means that the side link BWP frequency domain resource is not completely the same as the uplink BWP frequency domain resource, or the side link BWP frequency domain resource is not completely included in the The uplink BWP frequency domain resource; the configuration of the side link BWP corresponding to the uplink BWP indicates that the side link BWP frequency domain resource is completely the same as the uplink BWP frequency domain resource, or the side link BWP frequency domain resource is completely included in the uplink BWP frequency
  • the domain resources refer to Embodiment 1, which will not be repeated here.
  • the terminal device when the V2X terminal device is configured with both the uplink BWP (UL BWP) and the side link BWP, when the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device does not perform uplink BWP switching.
  • the resource pool used for the transmission of the side link is selected in the frequency domain resources of the coincidence of the side link BWP and the currently activated uplink BWP, thereby ensuring the normal transmission and reception of the side link data.
  • Embodiment 9 also provides a data sending device, which is configured in a terminal device. Since the principle of the device to solve the problem is similar to the method of Embodiment 5, the specific implementation can refer to the implementation of the method of Embodiment 5, and the same content will not be repeated.
  • FIG. 17 is a schematic diagram of the data transmission device of the ninth embodiment. As shown in Figure 17,
  • the fifth receiving unit 1701 is configured to receive indication information sent by a network device, where the indication information indicates time domain resources contained in a resource pool used for side link transmission;
  • a second switching unit 1702 configured to switch from the currently activated first uplink BWP to the second uplink BWP before the time domain resource indicated by the indication information arrives;
  • the third transceiving unit 1703 is used to send side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • the indication information is semi-static indication information or dynamic downlink control information.
  • the side link BWP and the second uplink BWP are activated.
  • the currently activated upstream BWP is switched to the upstream BWP corresponding to the side link BWP, thereby ensuring the side chain Normal transmission and reception of road data.
  • the tenth embodiment also provides a bandwidth switching indication device, which is configured in a network device. Since the principle of the device to solve the problem is similar to the method of Embodiment 6, the specific implementation can refer to the implementation of the method of Embodiment 6, and the same content will not be repeated.
  • FIG. 18 is a schematic diagram of a bandwidth switching instruction device according to the tenth embodiment. As shown in Figure 18,
  • a generating unit 1801 which is used to generate switching instruction information
  • the sending unit 1802 is used to send switching instruction information to the terminal device; the switching instruction information is used to instruct the terminal device to perform uplink BWP switching.
  • the device may further include:
  • the receiving unit 1803 is configured to receive the handover request indication information sent by the terminal device, and the handover request indication information is used to instruct the terminal device to request uplink BWP handover.
  • the handover instruction information is downlink control information used for scheduling side link transmission.
  • the terminal device when the V2X terminal device is configured with both the uplink BWP (UL BWP) and the side link BWP, when the configured side link BWP does not correspond to the currently activated uplink BWP, the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • UL BWP uplink BWP
  • the terminal device switches from the activated uplink BWP To the upstream BWP corresponding to the side link BWP, thereby ensuring the normal transmission and reception of side link data.
  • the communication system 100 may include: the network device 101 is configured with the bandwidth switching instruction device 1800 as in Embodiment 10, and the terminal device 102 is configured with the data transmission device 1300 or 1400 or 1500 as described in Embodiment 7;
  • the communication system 100 may include: a network device 101 that sends indication information indicating time-domain resources contained in a resource pool for side link transmission to the terminal device, and the terminal device 102, which is configured as described in Embodiment 9. ⁇ 1700 ⁇ Data transmission device 1700.
  • the communication system 100 may include: an existing network device 101 and a terminal device 102, which are configured with the data sending device 1600 described in Embodiment 8.
  • the communication system may further include a terminal device 103, which may adopt the structure of the terminal device in the prior art or the same structure as the terminal device 102, which is not limited in this embodiment.
  • FIG. 19 is a flowchart of the data sending method in this embodiment, corresponding to Embodiment 2, as shown in FIG. 19, the method includes:
  • step 1901 the network device sends the configuration information of the side link BWP to the terminal device 102 (transmitting end); for details on how to configure the SL BWP, refer to Embodiment 2, which will not be repeated here.
  • step 1902 the network device 101 sends the downlink control information used to schedule the side link transmission to the terminal device 102;
  • Step 1903 the sending terminal device 102 recognizes that the current DCI is the DCI used to schedule the side link transmission, and determines whether the configured SL BWP corresponds to the activated first UL BWP; Step 1904 is not correspondingly executed, otherwise Step 1905 is executed;
  • Step 1904 the transmitting terminal device 102 switches from the first UL BWP to the second UL BWP corresponding to the SL BWP;
  • step 1905 the sending terminal device 102 sends the side link data to the receiving terminal device 103 on the side link BWP resource.
  • FIG. 20 is a flowchart of the data sending method in this embodiment, corresponding to Embodiment 3, as shown in FIG. 20, the method includes:
  • step 2001 the network device 101 sends the configuration information of the side link BWP to the sending terminal device 102; for details on how to configure the SL BWP, refer to Embodiment 2, which will not be repeated here.
  • Step 2002 when the terminal device 102 at the transmitting end has side link data to be transmitted, it is determined whether the configured SL BWP corresponds to the activated first UL BWP, and step 2003 is not correspondingly executed, otherwise step 2006 is executed;
  • Step 2003 the sending terminal device 102 sends the handover request indication information to the network device 101;
  • the network device 101 sends the handover indication information to the terminal device at the sending end.
  • the handover indication information may be downlink control information used for scheduling a side link or uplink transmission;
  • Step 2005 the transmitting terminal device 102 switches from the first UL BWP to the second UL BWP corresponding to the SL BWP;
  • step 2006 the sending terminal device 102 sends the side link data to the receiving terminal device 103 on the side link BWP resource.
  • An embodiment of the present invention further provides a terminal device, but the present invention is not limited to this, and may also be other devices.
  • the terminal device 2100 may include a processor 2110 and a memory 2120; the memory 2120 stores data and programs, and is coupled to the processor 2110. It is worth noting that the figure is exemplary; other types of structures can also be used to supplement or replace the structure to achieve telecommunications functions or other functions.
  • the processor 2110 may be configured to execute a program to implement the data transmission method as described in Embodiments 1-3.
  • the processor 2110 may be configured to perform the following control: when the configured sideband partial bandwidth (BWP, Bandwidth Part) does not correspond to the currently activated first upstream BWP, switch from the first upstream BWP to the second upstream On the BWP, the configured side link BWP corresponds to the second uplink BWP; the side link data is sent and/or received on the resource of the side link BWP corresponding to the second uplink BWP.
  • BWP Bandwidth Part
  • the processor 2110 may be configured to execute a program to implement the data transmission method as described in Embodiment 4.
  • the processor 2110 may be configured to perform the following control: the configured side link BWP does not correspond to the currently activated first uplink BWP, and the first uplink BWP frequency domain resource and the side link BWP frequency domain resource When there is a coincidence, a resource pool for side link transmission is selected within the coincidence frequency domain resource; side link data is sent on the selected resource in the resource pool.
  • the processor 2110 reference may be made to Embodiment 4, and details are not described herein again.
  • the processor 2110 may be configured to execute a program to implement the data transmission method described in Embodiment 5.
  • the processor 2110 may be configured to perform the following control: receive indication information sent by a network device, where the indication information indicates time domain resources in a resource pool for side link transmission; in the time domain indicated by the indication information Before the resource arrives, switch from the currently activated first uplink BWP to the second uplink BWP; send the side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • the processor 2110 reference may be made to Embodiment 5, and details are not described herein again.
  • the terminal device 2100 may further include: a communication module 2130, an input unit 2140, a display 2150, and a power supply 2160. Among them, the functions of the above components are similar to those in the prior art, and will not be repeated here. It is worth noting that the terminal device 2100 does not necessarily include all the components shown in FIG. 21, and the above-mentioned components are not necessary; in addition, the terminal device 2100 may also include components not shown in FIG. 21. Have technology.
  • This embodiment also provides a network device, which may be, for example, a base station, but the present invention is not limited thereto, and may also be other network devices.
  • a network device which may be, for example, a base station, but the present invention is not limited thereto, and may also be other network devices.
  • the network device 2200 may include: a processor 2210 (for example, a central processing unit CPU) and a memory 2220; the memory 2220 is coupled to the processor 2210.
  • the memory 2220 can store various data; in addition, a program 2230 for information processing is stored, and the program 2230 is executed under the control of the processor 2210.
  • the processor 2210 may be configured to execute the program 2230 to implement the bandwidth switching instruction method as described in Embodiment 6.
  • the processor 2210 may be configured to perform the following control: generate switching instruction information; send the switching instruction information to the terminal device; the switching instruction information is used to instruct the terminal device to perform uplink BWP switching.
  • the processor 2210 reference may be made to Embodiment 6, and details are not described herein again.
  • the network device 2200 may further include: a transceiver 2240, an antenna 2250, and the like; wherein, the functions of the above components are similar to those in the prior art, and will not be repeated here. It is worth noting that the network device 2200 does not necessarily include all the components shown in FIG. 22; in addition, the network device 2200 may also include components not shown in FIG. 22, and reference may be made to the prior art.
  • An embodiment of the present invention also provides a storage medium storing a computer-readable program, wherein the computer-readable program causes the data transmission device or terminal device to execute the data transmission method described in any one of Embodiments 1 to 5.
  • An embodiment of the present invention also provides a computer-readable program, wherein when the program is executed in a data transmission device or terminal device, the program causes the data transmission device or terminal device to execute any one of Embodiments 1 to 5.
  • An embodiment of the present invention further provides a storage medium storing a computer-readable program, wherein the computer-readable program causes the bandwidth switching instruction apparatus or network device to execute the bandwidth switching instruction method described in Embodiment 6.
  • An embodiment of the present invention also provides a computer-readable program, wherein when the program is executed in a bandwidth switching instruction apparatus or a network device, the program causes the bandwidth switching instruction apparatus or network device to execute the embodiment 6 Bandwidth switching instruction method.
  • the above device and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to such a computer-readable program which, when executed by a logic component, can enable the logic component to implement the above-described device or constituent component, or enable the logic component to implement the various methods described above Or steps.
  • the invention also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memories, and so on.
  • each device described in conjunction with the embodiments of the present invention may be directly embodied as hardware, software modules executed by a processor, or a combination of both.
  • one or at least two of the functional block diagrams shown in FIGS. 13-18 and/or one or at least two combinations of the functional block diagrams may correspond to each software module of the computer program flow or each hardware Module.
  • These software modules can correspond to the steps shown in Figure 2-12.
  • These hardware modules can be realized by solidifying these software modules using, for example, a field programmable gate array (FPGA).
  • FPGA field programmable gate array
  • the software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module may be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or at least two of the functional block diagrams described in FIGS. 13-18 and/or one or at least two combinations of the functional block diagrams may be implemented as a general-purpose processor or a digital signal processor for performing the functions described in this application ( DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • one or at least two combinations of the functional block diagrams can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, at least two Microprocessors, one or at least two microprocessors in communication with the DSP, or any other such configuration.
  • a data transmission method including:
  • the terminal device switches from the first uplink BWP to the second uplink BWP, wherein the configured side The link BWP corresponds to the second uplink BWP;
  • the terminal device sends and/or receives side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • Appendix 2 The method according to Appendix 1, wherein the configured side link BWP does not correspond to the uplink BWP means that the side link BWP frequency domain resource is not completely the same as the uplink BWP frequency domain resource, or the side The link BWP frequency domain resource is not completely included in the uplink BWP frequency domain resource; the configuration of the side link BWP corresponding to the uplink BWP indicates that the side link BWP frequency domain resource is completely the same as the uplink BWP frequency domain resource, or the Sidelink BWP frequency domain resources are completely contained in uplink BWP frequency domain resources.
  • Appendix 3 The method according to Appendix 1 or 2, wherein when the resource used by the terminal device to transmit the sidelink data is scheduled by the network device, the method further includes:
  • the terminal device receives the downlink control information sent by the network device and used to schedule the side link transmission;
  • the terminal device When receiving the downlink control information, and when the configured side link BWP does not correspond to the currently activated first uplink BWP, the terminal device switches from the first uplink BWP to the second uplink BWP.
  • Appendix 4 The method according to Appendix 3, wherein the terminal device sends the edge on the time domain indicated by the downlink control information and/or the frequency domain resource indicated in the side link BWP Link data.
  • Appendix 5 The method according to any one of Appendixes 1 to 4, wherein the method further comprises:
  • the terminal device in the RRC connected state receives the first configuration information of the side link BWP sent by the network device, where the first configuration information is used to configure the side link BWP, and the side link BWP and the configured uplink BWP Corresponds to one of the uplink BWPs, and/or the side link BWP has overlapping frequency domain resources with the side link BWP or the pre-configured side link BWP configured in the current cell broadcast message, where the overlapping frequency domain resources Contains resource pools for side link transmission.
  • Appendix 6 The method according to Appendix 5, wherein the first configuration information of the side link BWP is carried through RRC dedicated signaling.
  • Appendix 7 The method according to any one of Appendixes 1 to 4, wherein the method further comprises:
  • the terminal device within the coverage of the current cell and in the RRC idle state receives a broadcast message, the side link BWP configured by the broadcast message corresponds to the initial uplink BWP of the current cell, or the side link BWP configured by the broadcast message is A common side link BWP of the terminal equipment using the current cell carrier;
  • the pre-configured side link BWP of the terminal device that is outside the coverage of the current cell but works on the uplink frequency and carrier of the current cell corresponds to the initial uplink BWP of the current cell, or the pre-configured side link BWP is A common side link BWP of the terminal equipment using the current cell carrier.
  • Appendix 8 The method according to Appendix 1 or 2, wherein, when the resource used by the terminal device to transmit the sidelink data is the terminal device selecting from the resource pool, the method further includes:
  • the terminal device sends handover request indication information to a network device, where the handover request indication information is used to instruct the terminal device to request uplink BWP handover;
  • the terminal device receives handover instruction information sent by the network device, and the handover instruction information is used to instruct the terminal device to perform uplink BWP handover;
  • the terminal device When receiving the handover instruction information, when the configured side link BWP does not correspond to the currently activated first uplink BWP, the terminal device switches from the first uplink BWP to the second uplink BWP.
  • Appendix 9 The method according to Appendix 8, wherein the handover request indication information is indicated by a scheduling request, the scheduling request is used to request the network device to send resources for sidelink data, wherein, the The terminal device sends the scheduling request on the uplink resource configured by the network device to send the scheduling request.
  • Appendix 10 The method according to Appendix 8, wherein the handover request indication information is indicated by a random access preamble or physical random access channel resource or buffer status report, and the handover indication information is indicated by downlink control information.
  • Appendix 11 The method according to Appendix 10, wherein, when the handover request indication information is carried by the buffer status report, the buffer status report includes the logical channel group identifier corresponding to the side link data.
  • Appendix 12 The method according to any one of Appendixes 2 to 11, wherein the frequency domain resources being completely the same means that the frequency domain center frequency point and the bandwidth are the same.
  • Appendix 13 The method according to any one of Appendixes 1 to 12, wherein, when the configured side link BWP corresponds to the currently activated first uplink BWP, the terminal device is on the side link BWP
  • the side-link data is sent on the frequency domain resources in the network without BWP switching.
  • Appendix 14 The method according to any one of Appendixes 1 to 13, wherein, after the terminal device switches to the second uplink BWP, the terminal device determines the side link BWP and all The second uplink BWP is activated, and it is determined that the first uplink BWP is deactivated.
  • Appendix 15 A data transmission method, including:
  • the terminal device overlaps the frequency domain resource Internally select the resource pool for side link transmission;
  • the terminal device sends side link data on the resource selected in the resource pool.
  • Appendix 16 The method according to Appendix 15, wherein the terminal device does not perform uplink BWP handover.
  • Appendix 17 The method according to Appendix 15 or 16, wherein the configured side link BWP does not correspond to the uplink BWP means that the side link BWP frequency domain resource is not completely the same as the uplink BWP frequency domain resource, or The side link BWP frequency domain resource is not completely included in the uplink BWP frequency domain resource; the configuration of the side link BWP corresponding to the uplink BWP indicates that the side link BWP frequency domain resource is completely the same as the uplink BWP frequency domain resource, or The sideband BWP frequency domain resource is completely included in the uplink BWP frequency domain resource.
  • Appendix 18 A data transmission method, including:
  • the terminal device receives the indication information sent by the network device, where the indication information indicates the time-domain resources contained in the resource pool for side link transmission;
  • the terminal device switches from the currently activated first uplink BWP to the second uplink BWP;
  • the terminal device sends side link data on the resource of the side link BWP corresponding to the second uplink BWP.
  • Appendix 19 The method according to Appendix 18, wherein the indication information is semi-static indication information or dynamic downlink control information.
  • Appendix 20 The method according to Appendix 18 or 19, wherein, within the time domain resource indicated by the indication information, the side link BWP and the second uplink BWP are activated.
  • Appendix 21 A bandwidth switching instruction method, wherein the method includes:
  • the network device generates the switching instruction information
  • the network device sends switching instruction information to the terminal device; the switching instruction information is used to instruct the terminal device to perform uplink BWP switching.
  • Appendix 22 The method according to Appendix 21, wherein the method further comprises:
  • the network device receives the handover request indication information sent by the terminal device, and the handover request indication information is used to instruct the terminal device to request uplink BWP handover.
  • Appendix 23 The method according to Appendix 21 or 22, wherein the handover instruction information is downlink control information used for scheduling side link transmission.

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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 d'envoi de données et un appareil associé, ainsi qu'un système de communication. Le procédé d'envoi de données comprend : lorsqu'une BWP de liaison latérale configurée ne correspond pas à une première BWP de liaison montante en cours d'activation, la commutation par un dispositif terminal depuis la première BWP de liaison montante vers une seconde BWP de liaison montante, la BWP de liaison latérale configurée correspondant à la seconde BWP de liaison montante ; et l'envoi par le dispositif terminal de données de liaison latérale sur une ressource de la BWP de liaison latérale correspondant à la seconde BWP de liaison montante, ce qui permet d'assurer la réception normale et l'envoi des données de liaison latérale.
PCT/CN2019/070995 2019-01-09 2019-01-09 Procédé d'envoi de données, appareil associé et système de communication Ceased WO2020142932A1 (fr)

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