[go: up one dir, main page]

WO2020164355A1 - Bwp切换方法及通信装置 - Google Patents

Bwp切换方法及通信装置 Download PDF

Info

Publication number
WO2020164355A1
WO2020164355A1 PCT/CN2020/072078 CN2020072078W WO2020164355A1 WO 2020164355 A1 WO2020164355 A1 WO 2020164355A1 CN 2020072078 W CN2020072078 W CN 2020072078W WO 2020164355 A1 WO2020164355 A1 WO 2020164355A1
Authority
WO
WIPO (PCT)
Prior art keywords
bwp
terminal device
source
target
target bwp
Prior art date
Application number
PCT/CN2020/072078
Other languages
English (en)
French (fr)
Inventor
温容慧
黎超
张兴炜
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2020164355A1 publication Critical patent/WO2020164355A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • This application relates to the field of communications, and in particular to a BWP handover method and communication device.
  • multiple terminal devices can form a terminal device group and establish a sidelink (SL) on the same bandwidth part (BWP, also known as the bandwidth part).
  • BWP bandwidth part
  • the terminal device group may establish a side link according to the BWP configured by the network device.
  • the terminal device group may establish a side link according to a pre-congfigured BWP.
  • the BWPs of different terminal devices in the group are also different, which leads to interruption of direct communication within the group and poor reliability.
  • some terminal devices have entered the coverage area of the target network device, and the configured BWP is the BWP corresponding to the target network device, while other terminal devices are still in the coverage area of the source network device, and the configured BWP is the source The BWP corresponding to the network device.
  • the BWP configured by the terminal device in the network coverage area is the BWP corresponding to the network device, and the BWP configured by the terminal device in the uncovered area is the pre-configured BWP.
  • This application provides a BWP switching method and communication device, which can solve the problem of direct communication interruption in the group of terminal equipment in the process of switching BWP, or reduce the interruption time of direct communication within the group in the process of switching BWP of the terminal equipment group, thereby improving The reliability of communication within the terminal equipment group.
  • a BWP handover method is provided.
  • the method is applicable to the first terminal device in the terminal device group; the terminal device group further includes the second terminal device, and the terminal device group supports multiple BWP modes.
  • the above BWP switching method includes: the first terminal device measures the target BWP while communicating with the second terminal device on the source BWP, and determines that the terminal device group needs to switch from the source BWP to the target BWP according to the measurement result of the target BWP. Then, the first terminal device sends the first handover instruction to the second terminal device on the source BWP.
  • the first switching instruction is used to instruct the second terminal device to switch from the source BWP to the target BWP. After that, the first terminal device communicates with the second terminal device on the target BWP and the source BWP.
  • the first terminal device can complete the measurement of the target BWP while maintaining communication with the second terminal device on the source BWP, and then determine that the terminal device group needs to switch from the source BWP according to the measurement result of the target BWP To the target BWP, and then instruct the second terminal device on the source BWP to communicate with the first terminal device on the target BWP, which can solve the problem of the terminal device group switching in the cell or entering the wireless network coverage area or moving out of the wireless network coverage area.
  • the problem of communication interruption in the terminal device group caused by the inconsistent switching time of different terminal devices in the terminal device group to the target BWP can improve the reliability of the communication in the terminal device group during the switching of the BWP.
  • the foregoing first switching instruction includes configuration information of the target BWP.
  • the foregoing first handover instruction may further include: a start time for the second terminal device to start the target BWP.
  • the activation target BWP refers to data communication on the BWP.
  • the above-mentioned first switching instruction may further include: a stop time for the second terminal device to stop communicating with the first terminal device on the source BWP.
  • the above-mentioned BWP switching method may further include: after the first terminal device communicates with the second terminal device on the target BWP and the source BWP, the first terminal device stops communicating with the second terminal device on the source BWP.
  • the terminal device communicates in order to reduce the power consumption of the first terminal device.
  • a BWP handover method is provided.
  • the method is applicable to the first terminal device in the terminal device group; the terminal device group also includes the second terminal device, and the terminal device group only supports the single BWP mode.
  • the single BWP mode means that only one BWP can be activated at the same time and/or on the same carrier, that is, only one BWP can be communicated.
  • the aforementioned BWP switching method includes: the first terminal device communicates with the second terminal device on the source BWP. Then, the first terminal device switches from the source BWP to the target BWP, measures the target BWP, and according to the measurement result of the target BWP, determines that the terminal device group needs to switch from the source BWP to the target BWP.
  • the first terminal device switches back to the source BWP, and sends a second switching instruction to the second terminal device on the source BWP.
  • the second switching instruction is used to instruct the second terminal device to switch from the source BWP to the target BWP.
  • the first terminal device switches from the source BWP to the target BWP again, and communicates with the second terminal device on the target BWP.
  • the first terminal device can switch from the source BWP to the target BWP after completing the measurement of the target BWP, if the first terminal device determines that the terminal device group needs to switch from the source BWP to the target according to the measurement result of the target BWP BWP, then switch back to the source BWP and send a second handover instruction to the second terminal device, instructing the second terminal device to switch from the source BWP to the target BWP to communicate with the second terminal device, which can effectively reduce the number of terminal device groups in cell switching or When entering the wireless network coverage area or moving out of the wireless network coverage area, the time deviation of different terminal devices in the terminal device group switching to the target BWP is large, which causes the communication interruption time in the terminal device group, thereby increasing the terminal device switching period during the BWP The reliability of communication within the device group.
  • the foregoing second switching instruction includes a first switching time
  • the first switching time is the time for the second terminal device to switch from the source BWP to the target BWP.
  • switching the first terminal device from the source BWP to the target BWP again may include: the first terminal device switches from the source BWP to the target BWP again at the second switching time.
  • the time deviation between the first switching time and the second switching time is less than the time deviation threshold, so as to reduce the communication interruption time of the terminal device group in the process of switching from the source BWP to the target BWP, and further improve the reliability of the communication within the terminal device group Sex.
  • the above-mentioned second switching instruction further includes configuration information of the target BWP.
  • the above-mentioned BWP switching method may also include at least one of the following: during the process of the first terminal device measuring the target BWP, the first terminal device communicates with the second terminal device through the network device; In the process of the terminal device switching from the source BWP to the target BWP, the first terminal device communicates with the second terminal device through the network device.
  • the BWP handover method described in the first aspect or the second aspect may further include one of the following: the first terminal device receives the measurement task of the target BWP sent by the source network device or the target network device ; The first terminal device does not detect the wireless signal sent by any network device, and then starts the measurement task of the target BWP by itself.
  • a BWP handover method is provided. This method is suitable for source network equipment.
  • the above-mentioned BWP switching method includes: the source network device receives the measurement result of the target BWP sent by the first terminal device, and according to the measurement result of the target BWP, determines that the terminal device group needs to switch from the source BWP to the target BWP.
  • the first terminal device belongs to a terminal device group, and the terminal device group further includes a second terminal device.
  • the source network device sends a third switching instruction to the terminal device group.
  • the third switching instruction is used to instruct the terminal device group to switch from the source BWP to the target BWP.
  • the source network device can determine that the terminal device group needs to switch from the source BWP to the target BWP according to the measurement result of the target BWP reported by the first terminal device, and download to each terminal device in the terminal device group Send a third switching instruction so that each terminal in the terminal device group switches from the source BWP to the target BWP according to the third switching instruction, and re-establishes the direct communication of the terminal device group in the group on the side link SL on the target BWP, It can avoid or effectively reduce the direct communication interruption time of the terminal device group in the group on the side link SL during the cell handover or entering the wireless network coverage area or moving out of the wireless network coverage area, thereby improving the handover BWP The reliability of the communication within the terminal equipment group during the period.
  • the foregoing third switching instruction includes configuration information of the target BWP.
  • the foregoing third switching instruction may further include: a third switching time and a fourth switching time.
  • the third switching time is used for the first terminal device to switch from the source BWP to the target BWP again, the fourth switching time is used for the second terminal device to switch from the source BWP to the target BWP, and the third switching time and the fourth switching time are different
  • the time deviation between is less than the time deviation threshold.
  • the foregoing BWP switching method may further include: the source network device sends a measurement task of the target BWP to the first terminal device.
  • the foregoing determination is based on the measurement result of the target BWP to determine that the terminal device group needs to be from the source BWP Switching to the target BWP may include: if the measurement result of the target BWP meets the BWP switching condition, determining that the terminal device group needs to switch from the source BWP to the target BWP.
  • the BWP switching condition includes at least one of the following: the signal strength of the target BWP is higher than the BWP signal strength threshold; the signal quality of the target BWP is higher than the SL signal quality threshold; the proportion of idle resources on the source BWP is higher than the first proportion threshold
  • the continuous duration of is greater than the first duration threshold; the continuous duration of which the proportion of idle resources on the target BWP is lower than the second proportion threshold is greater than the second duration threshold; the number of free resources on the source BWP is less than the number of free resources on the target BWP
  • the continuous duration is greater than the third duration threshold; there is no service with a priority higher than the priority threshold on the source BWP.
  • a communication device is provided.
  • the device is suitable for the first terminal device in the terminal device group.
  • the terminal device group further includes a second terminal device, and the terminal device group supports multiple BWP modes.
  • the communication device of the fourth aspect includes: a first communication module, a second communication module, and a control module.
  • the first communication module is used to communicate with the second terminal device on the source BWP.
  • the control module is used to control the second communication module to measure the target BWP while the first communication module communicates with the second terminal device on the source BWP, and determine that the terminal device group needs to switch from the source BWP to the target according to the measurement result of the target BWP BWP.
  • the first communication module is also configured to send a first switching instruction to the second terminal device on the source BWP.
  • the first switching instruction is used to instruct the second terminal device to switch from the source BWP to the target BWP.
  • the second communication module is used to communicate with the second terminal device on the target BWP.
  • the foregoing first switching instruction includes configuration information of the target BWP.
  • the foregoing first handover instruction may further include: a start time for the second terminal device to start the target BWP.
  • the above-mentioned first switching instruction may further include: a stop time for the second terminal device to stop communicating with the first terminal device on the source BWP.
  • the foregoing communication device may further include: a third communication module.
  • the third communication module is used to receive the target BWP measurement task sent by the source network device.
  • the control module is further configured to control the second communication module to automatically start the measurement task of the target BWP if the third communication module does not detect the wireless signal sent by any network device.
  • the third communication module is also used to receive the target BWP measurement task sent by the target network device.
  • the above control module may also be used to: control the first communication module to stop at The source BWP communicates with the second terminal device to reduce the power consumption of the first terminal device.
  • another communication device is provided.
  • the device is suitable for the first terminal device in the terminal device group.
  • the terminal device group further includes a second terminal device, and the terminal device group only supports a single BWP mode.
  • the above-mentioned communication device includes: a fourth communication module and a control module.
  • the fourth communication module is used to communicate with the second terminal device on the source BWP.
  • the control module is used to control the fourth communication module to switch from the source BWP to the target BWP, measure the target BWP, and determine that the terminal device group needs to switch from the source BWP to the target BWP according to the measurement result of the target BWP.
  • the control module is further configured to control the fourth communication module to switch back to the source BWP and send a second switching instruction to the second terminal device on the source BWP, and then control the fourth communication module to switch from the source BWP again at the second switching time To the target BWP and communicate with the second terminal device on the target BWP.
  • the second switching instruction is used to instruct the second terminal device to switch from the source BWP to the target BWP at the first switching time, and the time deviation between the first switching time and the second switching time is less than the time deviation threshold.
  • the foregoing second switching instruction includes a first switching time
  • the first switching time is a time for the second terminal device to switch from the source BWP to the target BWP.
  • the aforementioned control module is also used to control the fourth communication module to switch from the source BWP to the target BWP again at the second switching time.
  • the time deviation between the first switching time and the second switching time is less than the time deviation threshold.
  • the above-mentioned second switching instruction further includes configuration information of the target BWP.
  • the foregoing communication device further includes: a fifth communication module.
  • the fifth communication module is used to communicate with the second terminal device through the network device when the control module controls the fourth communication module to measure the target BWP, and the control module controls the fourth communication module to switch from the source BWP to the target BWP During the process, the network device communicates with the second terminal device.
  • the fifth communication module described above is further configured to receive the target BWP measurement task sent by the source network device or the target network device.
  • control module is further configured to control the fourth communication module to start the measurement task of the target BWP by itself if the fifth communication module does not detect the wireless signal sent by any network device.
  • another communication device is provided.
  • the device is suitable for source network equipment.
  • the communication device includes: a sixth communication module and a control module.
  • the sixth communication module is configured to receive the measurement result of the target BWP sent by the first terminal device.
  • the first terminal device belongs to a terminal device group, and the terminal device group further includes a second terminal device.
  • the control module is used to determine that the terminal device group needs to switch from the source BWP to the target BWP according to the measurement result of the target BWP.
  • the sixth communication module is also used to send a third switching instruction to the terminal device group.
  • the third switching instruction is used to instruct the terminal device group to switch from the source BWP to the target BWP.
  • the aforementioned third switching instruction includes configuration information of the target BWP.
  • the aforementioned third switching instruction may further include: a third switching time and a fourth switching time.
  • the third switching time is used for the first terminal device to switch from the source BWP to the target BWP again, the fourth switching time is used for the second terminal device to switch from the source BWP to the target BWP, and the third switching time and the fourth switching time are different
  • the time deviation between is less than the time deviation threshold.
  • the above-mentioned sixth communication module is further configured to send the measurement task of the target BWP to the first terminal device.
  • control module is further configured to: if the measurement result of the target BWP satisfies the BWP switching condition , It is determined that the terminal device group needs to be switched from the source BWP to the target BWP.
  • the BWP switching condition includes at least one of the following: the signal strength of the target BWP is higher than the BWP signal strength threshold; the signal quality of the target BWP is higher than the SL signal quality threshold; the proportion of idle resources on the source BWP is higher than the first proportion threshold
  • the continuous duration of is greater than the first duration threshold; the continuous duration of which the proportion of idle resources on the target BWP is lower than the second proportion threshold is greater than the second duration threshold; the number of free resources on the source BWP is less than the number of free resources on the target BWP
  • the continuous duration is greater than the third duration threshold; there is no service with a priority higher than the priority threshold on the source BWP.
  • a communication device in a seventh aspect, includes a processor and a transceiver, and the processor is coupled with the transceiver and the memory.
  • the memory is used to store computer programs.
  • the processor is configured to execute the computer program stored in the memory, so that the communication device executes the BWP switching method as described in the first aspect or any one of the possible implementation manners of the first aspect, or executes the second aspect or the second aspect.
  • the BWP switching method described in any one of the possible implementation manners implements the BWP switching method described in the third aspect or any one of the possible implementation manners of the third aspect.
  • a communication system includes: multiple terminal devices, such as the aforementioned first terminal device and second terminal device, and one or more network devices, such as a source network device and a target network device.
  • a readable storage medium which stores a program or instruction.
  • the computer executes the method described in the first aspect or any one of the possible implementations of the first aspect.
  • BWP handover method or execute the BWP handover method as described in the second aspect or any one of the possible implementations of the second aspect, execute the BWP as described in the third aspect or any one of the possible implementations of the third aspect Switch method.
  • a computer program product including computer program code, which when the computer program code runs on a computer, causes the computer to execute the BWP switching as described in the first aspect or any one of the possible implementation manners in the first aspect Method, or execute the BWP handover method as described in the second aspect or any one of the possible implementations of the second aspect, or execute the BWP handover method as described in the third aspect or any one of the possible implementations of the third aspect .
  • Figure 1 is a schematic structural diagram of a communication system to which the BWP handover method provided by this application is applicable;
  • FIG. 2A is a schematic diagram of a handover scenario to which the BWP handover method provided in this application is applicable;
  • Fig. 2B is a schematic diagram of a move-out scenario to which the BWP handover method provided in this application is applicable;
  • Figure 2C is a schematic diagram of a migration scenario to which the BWP handover method provided in this application is applicable;
  • Fig. 3 is a schematic diagram 1 of the flow of the BWP handover method provided by this application.
  • FIG. 4 is a second schematic diagram of the flow of the BWP handover method provided by this application.
  • Fig. 5 is the third flow diagram of the BWP handover method provided by this application.
  • FIG. 6 is a first structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 7 is a second structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 8 is a third structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 9 is a fourth structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is a fifth structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 11 is a sixth structural diagram of a communication device provided by an embodiment of this application.
  • fourth generation (4th generation, 4G) systems such as long term evolution (LTE) systems
  • fifth generation (5th generation, 5G) systems Fifth generation
  • Systems such as new radio (NR) systems, Narrow Band-Internet of Things (NB-IoT, Narrow Band-Internet of Things) systems, telematics systems, machine communication (MTC, Machine Type Communication) systems
  • Future communication systems such as 6G systems
  • NR new radio
  • NB-IoT Narrow Band-Internet of Things
  • MTC Machine Type Communication
  • Future communication systems such as 6G systems
  • 6G systems can also be applied to multi-standard wireless communication systems using two or more standards, such as heterogeneous systems using LTE and NR, which are not limited in this application.
  • the embodiment of this application takes an NR system as an example for description. It should be pointed out that the technical solutions provided in the embodiments of this application can also be applied to other wireless communication systems, such as the aforementioned LTE system, car networking system, etc., and the corresponding names can also be replaced by the names of corresponding functions in other wireless communication systems. .
  • example and “for example” are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as “example” or “for example” in this application should not be construed as being more preferable or advantageous than other embodiments or design solutions. Rather, the term example is used to present the concept in a concrete way.
  • the wireless communication system shown in FIG. 1 is taken as an example to describe in detail the wireless communication system applicable to the embodiments of the present application.
  • FIG. 1 is a schematic diagram of the architecture of a mobile communication system applied in an embodiment of the present application.
  • the mobile communication system includes a core network device, a wireless access network device and at least one terminal device (terminal device 1 and terminal device 2 in Fig. 1).
  • the terminal device is connected to the wireless access network device in a wireless manner
  • the wireless access network device is connected to the core network device in a wireless or wired manner.
  • the core network device and the wireless access network device can be separate and different physical devices, or they can integrate the functions of the core network device and the logical function of the wireless access network device on the same physical device, or it can be a physical device It integrates the functions of part of the core network equipment and part of the wireless access network equipment.
  • the terminal device can be a fixed location or movable.
  • Fig. 1 is only a schematic diagram.
  • the communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in Fig. 1.
  • the embodiments of the present application do not limit the number of core network equipment, radio access network equipment, and terminal equipment included in the mobile communication system.
  • the wireless access network equipment is the access equipment that the terminal equipment accesses to the mobile communication system through wireless means. It can be a base station NodeB, an evolved base station eNodeB, a base station in a 5G mobile communication system, a base station in a future mobile communication system, or For the access node in the WiFi system, etc., the embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device.
  • Terminal equipment may also be called terminal equipment (terminal), user equipment (UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT), and so on.
  • Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (Augmented Reality, AR) terminal devices, industrial control (industrial control) Wireless terminal equipment in ), wireless terminal equipment in self-driving (self-driving), wireless terminal equipment in remote surgery (remote medical surgery), wireless terminal equipment in smart grid (smart grid), transportation safety (transportation safety) Wireless terminal equipment in ), wireless terminal equipment in a smart city, wireless terminal equipment in a smart home, and so on.
  • VR virtual reality
  • AR Augmented Reality
  • Wireless terminal equipment in wireless terminal equipment in self-driving
  • remote surgery remote surgery
  • wireless terminal equipment in smart grid smart grid
  • wireless terminal equipment in a smart city wireless terminal equipment in a smart home, and so on.
  • Wireless access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of wireless access network equipment and terminal equipment.
  • the embodiments of the present application may be applicable to downlink signal transmission, may also be applicable to uplink signal transmission, and may also be applicable to device-to-device (D2D) signal transmission.
  • the sending device is a wireless access network device, and the corresponding receiving device is a terminal device.
  • the sending device is a terminal device, and the corresponding receiving device is a wireless access network device.
  • D2D signal transmission the sending device is a terminal device, and the corresponding receiving device is also a terminal device.
  • the embodiment of the present application does not limit the signal transmission direction.
  • Communication between wireless access network equipment and terminal equipment, as well as between terminal equipment and terminal equipment, can communicate through licensed spectrum, or communicate through unlicensed spectrum, or through licensed spectrum and free spectrum at the same time.
  • Authorize spectrum for communication Communication between wireless access network equipment and terminal equipment and between terminal equipment and terminal equipment can be through the frequency spectrum below 6G, or through the frequency spectrum above 6G, and can also use the frequency spectrum below 6G and the spectrum above 6G at the same time To communicate.
  • the embodiment of the present application does not limit the spectrum resource used between the radio access network device and the terminal device.
  • FIG. 1 is only a simplified schematic diagram of an example for ease of understanding.
  • the communication system may also include other network devices or other terminal devices, which are not shown in FIG. 1.
  • the network equipment of the wireless communication system such as g Node B (gNB) in the NR system
  • gNB g Node B
  • terminal equipment usually does not need to support the same bandwidth as network equipment.
  • terminal equipment may only need to support 40MHz, 60MHz bandwidth to meet communication requirements. Therefore, part of the bandwidth (BWP, also known as bandwidth part) is introduced on the uplink (UL)/downlink (DL) between the terminal equipment and the network equipment to reduce the Power consumption and cost.
  • the aforementioned partial bandwidth refers to a group of continuous physical resource blocks (PRB) configured by the radio access network device for the terminal device.
  • PRB physical resource blocks
  • the spectrum bandwidth of the above-mentioned group of continuous PRBs is generally smaller than the total spectrum bandwidth supported by the wireless access network equipment.
  • a terminal device can be configured with only one activated BWP or multiple activated BWPs.
  • the terminal device can use the BWP to communicate with the wireless network on the uplink and downlink, or use the BWP to directly communicate with another terminal device on the sidelink (SL).
  • the terminal device can use all the BWPs to communicate with the wireless network on the uplink and downlink, or use all the BWPs to communicate directly with one or more other terminal devices on the side link. While using a part of the BWP to communicate with the wireless network on the uplink and downlink, the other part of the BWP is used to directly communicate with one or more other terminal devices on the side link, which is not limited in this application.
  • vehicle-mounted terminal equipment can support vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), vehicle-to-infrastructure (V2I), and vehicle-to-vehicle (V2V).
  • V2V vehicle-to-vehicle
  • V2P vehicle-to-pedestrian
  • V2I vehicle-to-infrastructure
  • V2V vehicle-to-vehicle
  • V2V vehicle-to-any object (vehicle to X, V2X) communication, such as a vehicle to network (V2N).
  • V2N vehicle to network
  • the terminal device uses the BWP corresponding to the radio access network device, for example, through radio resource control (RRC) signaling or broadcast (broadcast) signaling.
  • RRC radio resource control
  • the sent BWP communicates directly with other terminal devices on the side link, otherwise, the pre-configured BWP is used to directly communicate with other terminal devices on the side link.
  • the existing terminal device can only passively complete its own BWP configuration based on the pre-configured BWP or the BWP issued by the network device where the terminal device is located.
  • the pre-configured BWP may be the default BWP configured according to the agreement when the terminal device leaves the factory.
  • multiple terminal devices can also form a terminal device group, and coordinate their actions with each other through intra-group communication.
  • the foregoing terminal device may be a vehicle-mounted terminal
  • the foregoing terminal device group may be a vehicle-mounted terminal device group, which can coordinate vehicle actions in the group through communication within the vehicle-mounted terminal device group, such as changing driving routes, coordinating vehicle speed and distance.
  • the terminal device group includes a first terminal device, a second terminal device, and a third terminal device.
  • handover scenario when the terminal device group is located in the coverage area of the source network device, the terminal device group communicates on the side link using the source BWP configured by the source network device. After the terminal device group moves from the source network device coverage area to the target network device coverage area, the terminal device group uses the target BWP configured by the target network device to communicate on the side link.
  • the terminal equipment group uses the pre-configured BWP to communicate on the side link.
  • the terminal device group uses the pre-configured BWP on the side link ⁇ . After the terminal device group moves from the uncovered area of the network to the coverage area of the target network device, the terminal device group uses the target BWP configured by the target network device to communicate on the side link.
  • the time to complete the new BWP configuration in the above three scenarios is usually different. Therefore, when some of the terminal devices have been configured as the new BWP, while another part of the terminal devices are still using the original BWP, and when the new BWP is different from the original BWP, it will cause the two parts of terminal devices to exist on the side link for a long time. The communication is interrupted, which will adversely affect the reliability of direct communication within the terminal equipment group.
  • the aforementioned direct communication interruption duration in the terminal device group can be determined according to the moving speed of the terminal device group and the distance between the terminal device that first completes the new BWP configuration and the terminal device that completes the new BWP configuration last.
  • FIG. 3 is a schematic diagram 1 of the flow of the BWP handover method provided by an embodiment of the application, which can be applied to the wireless communication system shown in FIG. 1 to solve the problem of terminal device groups in any of the scenarios shown in FIG. 2A-2C.
  • the internal direct communication interruption problem can improve the reliability of direct communication in the terminal device group.
  • the terminal device group includes a first terminal device, a second terminal device, and a third terminal device, and the terminal device group supports multiple BWP modes.
  • each terminal device in the terminal device group supports direct communication with other terminal devices in the terminal device group on two or more BWPs.
  • each terminal device is equipped with 2 or more independently controllable communication units, such as 2 or more radio frequency circuits, and each communication unit can independently support a BWP.
  • the following takes the first terminal device and the second terminal device as an example to describe in detail the BWP switching method 1 provided in the embodiment of the present application.
  • the above-mentioned BWP switching method one may include S301-S305:
  • the first terminal device communicates with the second terminal device on the source BWP.
  • the source BWP is the BWP corresponding to the source network device.
  • the source network device issues the configuration information of the source BWP through the RRC signaling of the Uu port.
  • Each terminal device in the terminal device group establishes direct communication within the group on the side link SL according to the configuration information of the source BWP.
  • the source BWP is a pre-configured BWP.
  • the pre-configured BWP may be the same BWP that is pre-configured according to the agreement when the terminal device leaves the factory.
  • each terminal device in the terminal device group establishes direct communication within the group on the side link SL according to the configuration information of the pre-configured BWP.
  • the configuration information of the source BWP may include at least one of the following: BWP identification of the source BWP, carrier frequency and bandwidth of the source BWP, carrier interval used on the BWP, BWP activation time, BWP deactivation time, and The resource identifier of the shared resource on the source BWP, etc.
  • S302 The first terminal device measures the target BWP.
  • the target BWP refers to the BWP corresponding to the target network device.
  • the terminal device group needs to establish direct intra-group communication on the side link SL on the target BWP.
  • the target BWP refers to a pre-configured BWP.
  • the terminal device group When the terminal device group is in an area not covered by the network, the terminal device group needs to establish direct communication within the group on the side link SL on the pre-configured BWP.
  • target BWP there may be one or more target BWP, which is not limited here.
  • target BWPs there may be multiple target BWPs.
  • the measurement task of the aforementioned target BWP may include configuration information of one or more target BWPs. Specifically, it may include at least one of the following:
  • the physical cell identifier list of the target cell (phisical cell identifier list, PCID list);
  • the target BWP list (sidelink BWP associated PCID list) corresponding to each target cell;
  • SL resource pool (sidelink resource pool within BWP) on each target BWP;
  • Uu port signal threshold for target BWP switching/opening/close Uu-RSRP threshold for sidelink BWP switching/open/close
  • SL signal threshold (SL-RSRP threshold for sidelink BWP switching/open/close) used for target BWP switching/opening/close.
  • the above Uu port signal threshold may include at least one of Uu port signal strength threshold and Uu port signal quality threshold, such as Uu port reference signal received power (reference signal received power, Uu-RSRP) threshold, Uu port reference signal reception Quality (reference signal received quality, Uu-RSRP) threshold.
  • the signal threshold on SL may also include at least one of the signal strength threshold on SL and the signal quality threshold on SL, such as the RSRP threshold on SL, the RSRQ threshold on SL, and so on.
  • the measurement task of the target BWP mentioned above may be periodically or triggered by a network event. Therefore, in a possible design method, the first terminal device may periodically start the measurement of the target BWP according to the measurement period carried by the measurement task. It is easy to understand that the measurement period of the aforementioned target BWP may be the same as or different from the measurement period of the serving cell/neighboring cell, which is not limited in this application.
  • the first terminal device may also start the measurement of the target BWP according to the measurement start condition.
  • the measurement start condition may include at least one of the following:
  • the first terminal device detects that the network signal sent by the source network device is less than the source network signal threshold
  • the first terminal device detects that the network signal sent by the target network device is greater than the target network signal threshold
  • the first terminal device detects that the difference between the network signal sent by the target network device and the network signal sent by the source network device is greater than the signal deviation threshold
  • All network signals detected by the first terminal device are less than the network signal threshold
  • the side link SL signal detected by the first terminal device is less than the SL signal threshold.
  • all the network signals detected by the first terminal device are less than the network signal threshold, which may include: the first terminal device does not detect the network signal, and the first terminal device is already in an area not covered by the network.
  • the foregoing network signal threshold may be a signal strength threshold, such as the Uu-RSRP threshold described in S302, or may be a signal quality threshold, such as the SL-RSRQ threshold described in S302, which is not limited here.
  • the first BWP switching method may also include one of the following:
  • the first terminal device receives the measurement task of the target BWP issued by the source network device;
  • the first terminal device receives the target BWP measurement task issued by the target network device;
  • the first terminal device automatically starts the pre-configured measurement task of the target BWP.
  • the first terminal device receives the measurement task of the target BWP issued by the source network device through RRC signaling on the Uu link.
  • the first terminal device when the first terminal device enters the coverage area of the target network device, it receives the target BWP measurement task issued by the target network device through RRC signaling on the Uu link.
  • the first terminal device determines, according to the measurement result of the target BWP, that the terminal device group needs to switch from the source BWP to the target BWP.
  • the foregoing S303 determines that the terminal device group needs to switch from the source BWP to the target BWP, which may be specifically implemented as follows:
  • the terminal device group needs to switch from the source BWP to the target BWP.
  • the aforementioned BWP switching condition may include at least one of the following:
  • the signal quality of the target BWP is higher than the SL signal quality threshold
  • the signal strength of the target BWP is higher than the SL signal strength threshold
  • the idle resource ratio (idle resource ratio) on the source BWP is higher than the first ratio threshold for continuous duration greater than the first duration threshold;
  • the continuous duration in which the proportion of idle resources on the target BWP is lower than the second proportion threshold is greater than the second duration threshold
  • the continuous duration in which the number of idle resources on the source BWP is less than the number of idle resources on the target BWP is greater than the third duration threshold
  • the aforementioned percentage of idle resources on the source BWP refers to the ratio of the number of idle resources on the source BWP, such as idle RBs, to the total amount of resources on the source BWP.
  • the proportion of idle resources on the target BWP above refers to the ratio of the number of idle resources on the target BWP, such as idle RBs, to the total amount of resources on the target BWP.
  • the above-mentioned proportion of idle resources on the source BWP is higher than the first proportion threshold, which means that the number of terminal devices working on the source BWP is small, which means that most of the terminal devices in the terminal device group may have switched to the target BWP or The terminal device has moved away from the source cell, so it is far away from other terminals in the source cell communicating on the source BWP.
  • the first terminal device In order to be consistent with other terminals in the group or to communicate with other terminal devices in a short distance, the first terminal device also needs to switch to the target BWP as soon as possible.
  • the first proportion threshold is usually configured as a larger value, such as 80%, 70%, and so on.
  • the aforementioned proportion of idle resources on the target BWP is lower than the second proportion threshold, which means that the number of terminal devices working on the target BWP is large, which means that most of the terminal devices in the terminal device group have been switched to the target BWP.
  • the first terminal device In order to be consistent with other terminals in the group, the first terminal device also needs to switch to the target BWP as soon as possible.
  • the second proportion threshold is usually configured as a smaller value, such as 20%, 30%, and so on.
  • the aforementioned number of idle resources on the source BWP is less than the number of idle resources on the target BWP, which means that the system capacity of the target BWP is higher than the system capacity of the original BWP. Therefore, in order to accommodate more terminal devices, each terminal device in the terminal device group, such as the first terminal device, needs to switch from the source BWP to the target BWP as soon as possible.
  • the proportion of idle resources on the source BWP is higher than the first proportion threshold and the proportion of idle resources on the target BWP is low.
  • the statistical duration at the second proportion threshold and the statistical duration where the number of idle resources on the source BWP is greater than the number of idle resources on the target BWP are all continuous durations.
  • the aforementioned first duration threshold, second duration threshold, and third duration threshold need to be set to a larger value, such as 10 slots, 100 milliseconds, and so on. It is easy to understand that the above three duration thresholds may be the same or different, which is not limited in this application.
  • the above-mentioned service priority can be comprehensively determined according to multiple factors such as service rate requirements, delay requirements, and bit error rate requirements, and will not be repeated here.
  • the first terminal device sends a first handover instruction to the second terminal device on the source BWP.
  • the first switching instruction is used to instruct the second terminal device to switch from the source BWP to the target BWP.
  • the foregoing first switching instruction includes configuration information of the target BWP.
  • the physical cell identifier (phisical cell identifier, PCID) of the target cell
  • the target BWP (sidelink BWP associated PCID) corresponding to the target cell
  • the SL resource pool (sidelink resource pool within BWP) on the target BWP.
  • the target BWP included in the first handover instruction may be the configuration information of a target BWP in the configuration information carried by the measurement task, or it may not be carried by the measurement task, but is detected by the first terminal and meets the BWP handover
  • the target BWP of the condition is not limited in this application.
  • the first terminal device may send the first handover instruction to the second terminal device on the control channel on the side link SL, such as the physical sidelink control channel (PSCCH), or on the side link control channel.
  • the data channel on the uplink SL such as the physical sidelink shared channel (PSSCH), sends the first handover instruction to the second terminal device, which is not limited in this application.
  • the first terminal device sends the first switching instruction to the second terminal device on the source BWP, which can also be replaced with the following step:
  • the first terminal device reports the first switching instruction to the source network device through the Uu port.
  • the source network device then issues the first switching instruction to other terminal devices in the terminal device group, such as the second terminal device, through the Uu port.
  • the first terminal device is on the source BWP and sends the first handover instruction to the second terminal device, which can also be replaced with the following steps:
  • the first terminal device reports the first switching instruction to the target network device through the Uu port.
  • the target network device After the coverage area of other terminal devices in the terminal device group, such as the target network device, the target network device then issues the first switching instruction through the Uu port to other terminal devices in the terminal device group, such as the second terminal device.
  • the foregoing first handover instruction may further include: a start time for the second terminal device to start the target BWP.
  • start-up time may be the start-up time directly carried by the first switching instruction, or may be the start-up time determination rule carried by the first switching instruction, which is not limited in this application.
  • the second terminal device may immediately start communication on the target BWP after receiving the first handover instruction.
  • the second terminal device may also start communication on the target BWP after receiving the first handover instruction and delaying for a specified period of time.
  • the second terminal device may also determine the start time of the target BWP by itself according to the measurement result of the source BWP and the target BWP by the second terminal device.
  • the second terminal device may also convert it into the start time of the target BWP corresponding to the second terminal device according to the channel measurement result of the side link SL with the first terminal device.
  • the first terminal device communicates with the second terminal device on the target BWP and the source BWP.
  • the second terminal device After receiving the first handover instruction, the second terminal device starts measurement and communication on the target BWP. So far, the side link SL on the source BWP and the side link SL on the target BWP are simultaneously established between the first terminal device and the second terminal device. In other words, there is a dual connection between the first terminal device and the second terminal device. It is easy to understand that the information in the group can be transmitted on the source BWP, can also be transmitted on the target BWP, and can also be transmitted on the source BWP and the target BWP at the same time, which is not limited here.
  • the first terminal device may also disconnect the direct communication with the second terminal device on the source BWP, so as to reduce the first terminal device’s Power consumption. Therefore, the above-mentioned BWP switching method one may also include the following steps:
  • the first terminal device and the second terminal device stop communicating on the source BWP.
  • the second terminal device can also disconnect its direct communication with the first terminal device on the source BWP, so as to reduce the second terminal device Power consumption. Therefore, further, the above-mentioned first switching instruction may further include: a stop time for the second terminal device to stop direct communication with the first terminal device on the source BWP.
  • the second terminal device may set a local timer (timer), and after the local timing expires, the communication between the first terminal device and the first terminal device on the source BWP is disconnected.
  • timer a local timer
  • the second terminal device may also determine when to disconnect the measurement link SL between the source BWP and the first terminal device according to the mobility measurement results of the source BWP and the target BWP.
  • the foregoing terminal device group may also include other terminal devices, such as a third terminal device.
  • a third terminal device For the operation of the third terminal device, reference may be made to the related description of the second terminal device, which will not be repeated here.
  • the first terminal device can complete the measurement of the target BWP while maintaining communication with the second terminal device on the source BWP, and then, according to the measurement result of the target BWP, it is determined that the terminal device group needs from the source BWP Switch to the target BWP, and then instruct the second terminal device on the source BWP to communicate with the first terminal device on the target BWP, which can solve the process of switching the terminal device group in the cell or entering the wireless network coverage area or moving out of the wireless network coverage area
  • the problem of communication interruption in the terminal device group caused by the inconsistent switching time of different terminal devices in the terminal device group to the target BWP can improve the reliability of the communication in the terminal device group during the switching of the BWP.
  • FIG. 4 is a schematic flowchart of the second method of BWP handover provided by an embodiment of the application, which can be applied to the wireless communication system shown in FIG. 1 to reduce the number of terminal device groups in any of the scenarios shown in FIG. 2A-2C.
  • the internal direct communication interruption time can improve the reliability of direct communication in the terminal device group.
  • the terminal device group includes a first terminal device, a second terminal device, and a third terminal device, and the terminal device group only supports a single BWP mode.
  • the aforementioned terminal device group supporting the single BWP mode means that each terminal device in the terminal device group only supports direct communication with other terminal devices in the terminal device group on one BWP.
  • each terminal device is configured with only one communication unit that can be used for the side link SL, such as a set of radio frequency circuits.
  • the following takes the first terminal device and the second terminal device as an example to describe in detail the second BWP switching method provided in the embodiment of the present application.
  • the above-mentioned BWP handover method two may include S401-S405:
  • the first terminal device communicates with the second terminal device on the source BWP.
  • S401 is the same as S301 and will not be repeated here.
  • the first terminal device switches from the source BWP to the target BWP, and measures the target BWP.
  • the receiving mode and starting conditions of the measurement task of the target BWP can be referred to the relevant description in S302, which will not be repeated here.
  • the first terminal device since the first terminal device only supports the single BWP mode, when the target BWP needs to be measured, the first terminal device needs to switch from the source BWP to the target BWP, that is, the first terminal device is used on the side link SL
  • the communication unit of communication is configured as the target BWP.
  • the intra-group communication between the first terminal device and other terminal devices in the terminal device group, such as the second terminal device can also be completed by means of network device forwarding, such as through the network The device forwards multicast information to avoid interruption of communication within the terminal device group.
  • the first terminal device may exchange multicast information with the target network device and the source network device and other terminal devices in the terminal device group.
  • the first terminal device may exchange multicast information with the source network device and other terminal devices in the terminal device group.
  • the first terminal device determines, according to the measurement result of the target BWP, that the terminal device group needs to switch from the source BWP to the target BWP.
  • S404 The first terminal device switches back to the source BWP, and sends a second switching instruction to the second terminal device on the source BWP.
  • the first terminal device Since the first terminal device only supports the single BWP mode, the first terminal device can switch back to the source BWP and send the second switching instruction to the second terminal device on the source BWP.
  • the second switching instruction is used to instruct the second terminal device to switch from the source BWP to the target BWP.
  • the above-mentioned second switching instruction includes the first switching time.
  • the first switching time is the time for the second terminal device to switch from the source BWP to the target BWP.
  • the first switching time may refer to the description related to the start-up time of the second terminal device to start the target BWP in S304 of the BWP switching method 1, which will not be repeated here.
  • the above-mentioned second switching instruction may also include configuration information of the target BWP.
  • configuration information of the target BWP please refer to the related description in S304, which will not be repeated here.
  • the first terminal device may not switch back to the source BWP, but report the second handover instruction to the network device, and the network device forwards it to the second terminal device.
  • the above-mentioned BWP switching method 2 may further include the following steps:
  • the first terminal device communicates with the second terminal device through the network device, such as forwarding a multicast message, to avoid interruption of communication within the terminal device group.
  • the second terminal device performs the following steps:
  • the second terminal device receives the second handover instruction sent by the first terminal device on the source BWP.
  • S405 The first terminal device switches from the source BWP to the target BWP again, and communicates with the second terminal device on the target BWP.
  • the second terminal device performs the following steps:
  • the second terminal device switches from the source BWP to the target BWP, and communicates with the second terminal device on the target BWP.
  • the aforementioned first terminal device switches from the source BWP to the target BWP again, which can be specifically implemented as follows:
  • the first terminal device switches from the source BWP to the target BWP again at the second switching time.
  • the time deviation between the first handover time and the second handover time described in S404 is less than the time deviation threshold, so as to reduce the communication interruption time of the terminal device group in the process of switching from the source BWP to the target BWP, and further improve the terminal The reliability of communication within the device group.
  • the above-mentioned time deviation threshold is usually set to a small value, such as 10 milliseconds, 1 time slot, and so on.
  • the time deviation between the switching times of any two terminal devices in the aforementioned terminal device group should be less than the time deviation threshold.
  • the first terminal device can switch from the source BWP to the target BWP to complete the measurement of the target BWP, if the first terminal device determines according to the measurement result of the target BWP that the terminal device group needs to switch from the source BWP to Target BWP, switch back to the source BWP and send a second handover instruction to the second terminal device, instructing the second terminal device to switch from the source BWP to the target BWP to communicate with the second terminal device, which can effectively reduce the cell handover in the terminal device group Or in the process of entering the wireless network coverage area or moving out of the wireless network coverage area, the time deviation of different terminal devices in the terminal device group switching to the target BWP is large, resulting in the communication interruption time in the terminal device group, thereby increasing the BWP switching period The reliability of communication within the terminal equipment group.
  • Figure 5 is a schematic flow chart of the third method of BWP handover provided by an embodiment of the application, which can be applied to the source network device in the wireless communication system shown in Figure 1 to reduce the number of scenarios shown in Figure 2A-2C.
  • the direct communication interruption time in the lower terminal device group can improve the reliability of the direct communication in the terminal device group.
  • the terminal device group includes a first terminal device and a second terminal device.
  • the BWP switching method 3 shown in FIG. 5 there is no need to limit the BWP support capability of the terminal device group.
  • all terminal devices in a terminal device group can support multiple BWP mode, or all terminal devices can only support single BWP mode, some terminal devices can also support multiple BWP mode, and another part of terminal devices only support single BWP mode. Not limited.
  • the following takes the source network device as an example to describe in detail the BWP switching method 3 provided in the embodiment of the present application.
  • the above-mentioned BWP switching method three may include S501-S505:
  • S501 The source network device receives the measurement result of the target BWP reported by the first terminal device.
  • the source network device receives the measurement result of the target BWP reported by the first terminal device through the Uu port.
  • the measurement result of the target BWP can be referred to S303 and S403, which will not be repeated here.
  • the foregoing BWP switching method may further include: the source network device sends the measurement task of the target BWP to the first terminal device through the Uu port.
  • the source network device determines, according to the measurement result of the target BWP, that the terminal device group needs to switch from the source BWP to the target BWP.
  • the source network device determines that the measurement result of the target BWP satisfies the BWP switching condition, the source network device determines that the terminal device group needs to be switched from the source BWP to the target BWP.
  • the BWP switching conditions can be referred to S303, which will not be repeated here.
  • S503 The source network device sends a third switching instruction to the terminal device group.
  • the third switching instruction is used to instruct the terminal device group to switch from the source BWP to the target BWP.
  • the source network device sends the third switching instruction to the terminal device group through the Uu port.
  • the foregoing third switching instruction includes configuration information of the target BWP.
  • the configuration information of the target BWP can refer to S303, which will not be repeated here.
  • the aforementioned third switching instruction may also include: the start time of the target BWP corresponding to each terminal device in the terminal device group, and the disconnection directly on the source BWP The disconnection time of the communication.
  • start-up time and the disconnection time please refer to the relevant descriptions in S305 and S306, respectively, which will not be repeated here.
  • the above-mentioned third switching instruction may further include: a third switching time and a fourth switching time.
  • the third switching time is used for the first terminal device to switch from the source BWP to the target BWP again
  • the fourth switching time is used for the second terminal device to switch from the source BWP to the target BWP
  • the third switching time and the fourth switching time are different
  • the time deviation between is less than the time deviation threshold.
  • the first terminal device and the second terminal device may execute S504:
  • S504 Switch to the target BWP according to the third switching instruction.
  • S505 Communicate on the target BWP.
  • the source network device can determine that the terminal device group needs to switch from the source BWP to the target BWP according to the measurement result of the target BWP reported by the first terminal device, and send it to each terminal device in the terminal device group Issue the third switching instruction so that each terminal in the terminal device group switches from the source BWP to the target BWP according to the third switching instruction, and reestablishes the direct communication of the terminal device group in the group on the side link SL on the target BWP , Can avoid or effectively reduce the time of direct communication interruption of the terminal equipment group in the group on the side link SL during the cell handover or entering the wireless network coverage area or moving out of the wireless network coverage area, thereby improving the handover The reliability of communication within the terminal device group during BWP.
  • FIG. 6 is a communication device provided by an embodiment of the application, which is used to perform the function of the first terminal device of the terminal device group in the foregoing method embodiment.
  • the terminal device group further includes a second terminal device, and the terminal device group supports multiple BWP modes.
  • the communication device 600 includes: a first communication module 601, a second communication module 602, and a control module 603.
  • the first communication module 601 is used to communicate with the second terminal device on the source BWP.
  • the control module 603 is used to control the second communication module 602 to measure the target BWP while the first communication module 601 communicates with the second terminal device on the source BWP, and to determine that the terminal device group needs the source BWP according to the measurement result of the target BWP Switch to the target BWP.
  • the first communication module 601 is also configured to send a first switching instruction to the second terminal device on the source BWP.
  • the first switching instruction is used to instruct the second terminal device to switch from the source BWP to the target BWP.
  • the second communication module 602 is configured to communicate with the second terminal device on the target BWP.
  • the foregoing first switching instruction includes configuration information of the target BWP.
  • the foregoing first handover instruction may further include: a start time for the second terminal device to start the target BWP.
  • the above-mentioned first switching instruction may further include: a stop time for the second terminal device to stop communicating with the first terminal device on the source BWP.
  • the above control module is also used to determine that the terminal device group needs to be switched from the source BWP to the target BWP if the measurement result of the target BWP meets the BWP switching condition.
  • the BWP switching condition includes at least one of the following: the signal strength of the target BWP is higher than the BWP signal strength threshold; the signal quality of the target BWP is higher than the SL signal quality threshold; the proportion of idle resources on the source BWP is higher than the first proportion threshold
  • the continuous duration of is greater than the first duration threshold; the continuous duration of which the proportion of idle resources on the target BWP is lower than the second proportion threshold is greater than the second duration threshold; the number of free resources on the source BWP is less than the number of free resources on the target BWP
  • the continuous duration is greater than the third duration threshold; there is no service with a priority higher than the priority threshold on the source BWP.
  • the control module 603 is also used to control the first communication module 601 Stop communicating with the second terminal device on the source BWP.
  • the foregoing communication device 600 may further include: a third communication module 604.
  • the third communication module 604 is configured to receive the measurement task of the target BWP sent by the source network device or the target network device.
  • control module 603 is further configured to control the second communication module 602 to start the measurement task of the target BWP by itself if the third communication module 604 does not detect the wireless signal sent by any network device.
  • the communication device 600 may be a terminal device, or a chip set inside the terminal device, which is not limited in this application.
  • Fig. 8 is another communication device provided by an embodiment of the application, which is used to perform the functions of the first terminal device of the terminal device group in the foregoing method embodiment.
  • the terminal device group further includes a second terminal device, and the terminal device group only supports a single BWP mode.
  • the communication device 800 includes: a fourth communication module 801 and a control module 802.
  • the fourth communication module 801 is used to communicate with the second terminal device on the source BWP.
  • the control module 802 is used to control the fourth communication module 801 to switch from the source BWP to the target BWP and measure the target BWP.
  • the control module 802 is further configured to determine that the terminal device group needs to switch from the source BWP to the target BWP according to the measurement result of the target BWP.
  • the control module 802 is further configured to control the fourth communication module 801 to switch back to the source BWP, and send a second switching instruction to the second terminal device on the source BWP.
  • the second switching instruction is used to instruct the second terminal device to switch from the source BWP to the target BWP.
  • the control module 802 is also used to control the fourth communication module 801 to switch from the source BWP to the target BWP again, and communicate with the second terminal device on the target BWP.
  • the foregoing second switching instruction includes a first switching time
  • the first switching time is a time for the second terminal device to switch from the source BWP to the target BWP.
  • the control module 802 is also used to control the fourth communication module 801 to switch from the source BWP to the target BWP again at the second switching time.
  • the time deviation between the first switching time and the second switching time is less than the time deviation threshold.
  • the above-mentioned second switching instruction further includes configuration information of the target BWP.
  • the aforementioned communication device 800 further includes: a fifth communication module 803.
  • the fifth communication module 803 is used to communicate with the second terminal device through the network device when the control module 802 controls the fourth communication module 801 to measure the target BWP, and the control module 802 controls the fourth communication module 801 from the source During the process of switching the BWP to the target BWP, the network device communicates with the second terminal device.
  • the fifth communication module 803 is further configured to receive the measurement task of the target BWP sent by the source network device or the target network device.
  • control module 802 is further configured to control the fourth communication module 801 to start the measurement task of the target BWP by itself if the fifth communication module 803 does not detect the wireless signal sent by any network device.
  • the above-mentioned control module 802 is further configured to determine that the terminal device group needs to be switched from the source BWP to the target BWP if the measurement result of the target BWP meets the BWP switching condition.
  • the BWP switching conditions include at least one of the following:
  • the signal strength of the target BWP is higher than the BWP signal strength threshold; the signal quality of the target BWP is higher than the SL signal quality threshold;
  • the continuous duration in which the proportion of idle resources on the source BWP is higher than the first proportion threshold is greater than the first duration threshold
  • the continuous duration in which the proportion of idle resources on the target BWP is lower than the second proportion threshold is greater than the second duration threshold
  • the continuous duration in which the number of idle resources on the source BWP is less than the number of idle resources on the target BWP is greater than the third duration threshold
  • the communication device 800 may be a terminal device or a chip provided inside the terminal device, which is not limited in this application.
  • Fig. 10 is another communication device provided by an embodiment of this application, which is used to perform the function of the source network device in the foregoing method embodiment.
  • the communication device 1000 includes: the communication device 1000 includes: a sixth communication module 1001 and a control module 1002.
  • the sixth communication module 1001 is configured to receive the measurement result of the target BWP sent by the first terminal device.
  • the first terminal device belongs to a terminal device group, and the terminal device group further includes a second terminal device.
  • the control module 1002 is configured to determine that the terminal device group needs to switch from the source BWP to the target BWP according to the measurement result of the target BWP.
  • the sixth communication module 1001 is also used to send a third switching instruction to the terminal device group.
  • the third switching instruction is used to instruct the terminal device group to switch from the source BWP to the target BWP.
  • the aforementioned third switching instruction includes configuration information of the target BWP.
  • the aforementioned third switching instruction may further include: a third switching time and a fourth switching time.
  • the third switching time is used for the first terminal device to switch from the source BWP to the target BWP again, the fourth switching time is used for the second terminal device to switch from the source BWP to the target BWP, and the third switching time and the fourth switching time are different
  • the time deviation between is less than the time deviation threshold.
  • the aforementioned sixth communication module 1001 is further configured to send the measurement task of the target BWP to the first terminal device.
  • the aforementioned control module 1002 is further configured to determine that the terminal device group needs to be switched from the source BWP to the target BWP if the measurement result of the target BWP meets the BWP switching condition.
  • the BWP switching conditions include at least one of the following:
  • the signal strength of the target BWP is higher than the BWP signal strength threshold
  • the signal quality of the target BWP is higher than the SL signal quality threshold
  • the continuous duration in which the proportion of idle resources on the source BWP is higher than the first proportion threshold is greater than the first duration threshold
  • the continuous duration in which the proportion of idle resources on the target BWP is lower than the second proportion threshold is greater than the second duration threshold
  • the continuous duration in which the number of idle resources on the source BWP is less than the number of idle resources on the target BWP is greater than the third duration threshold
  • the communication device 1000 may be a network device, or a chip set inside the network device, which is not limited in this application.
  • the method involved in this application is also applicable to a unicast scenario, that is, a situation where there are only the first terminal device and the second terminal device in the terminal device group. The specific method will not be repeated.
  • FIG. 11 is another communication device provided by an embodiment of this application, which may be applicable to the wireless communication system shown in FIG. 1.
  • the communication device 1100 includes a processor 1101 and a transceiver 1102.
  • the processor 1101 is coupled with the transceiver 1102 and the memory 1103; the memory 1103 is used to store computer programs.
  • the processor 1101 is configured to execute a computer program stored in the memory 1103, so that the communication device 1100 executes the function of the first terminal device in the BWP switching method shown in FIG. 3 or FIG. 4.
  • the processor 1101 is coupled with the transceiver 1102 and the memory 1103.
  • the processor 1101 may be connected to the transceiver 1102 and the memory 1103 through the bus 1104.
  • the communication device 1100 includes one or more processors and one or more transceivers.
  • the one or more processors are configured to support the communication device 1100 to perform corresponding functions of the terminal device in the above-mentioned BWP switching method. For example, according to the measurement result of the target BWP, it is determined that the terminal device group needs to be switched from the source BWP to the target BWP.
  • the transceiver is used to support the communication device 1100 to communicate with other devices to realize the receiving and/or sending functions. For example, communicating with the second terminal device on the source BWP and/or on the target BWP, receiving the measurement task of the target BWP issued by the source network device or the target network device, etc.
  • the communication device 1100 may further include one or more memories, which are coupled to the processor and used to store necessary program instructions and/or data of the communication device 1100.
  • the one or more memories may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the communication device 1100 may be a smart phone or a vehicle-mounted terminal, etc.
  • the transceiver may be a transceiver circuit.
  • the transceiver may also be an input/output circuit or interface.
  • the communication device 1100 may also be a communication chip.
  • the transceiver may be an input/output circuit or interface of the communication chip.
  • the communication device 1100 includes a transceiver, a processor, and a memory.
  • the processor is used to control the transceiver to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to run the computer program in the memory so that the communication device 1100 executes the first BWP switching method shown in FIG. 3 or FIG. 4 The function of the terminal device.
  • the communication device 1100 includes one or more processors and one or more transceivers.
  • the one or more processors are configured to support the communication apparatus 1100 to perform the functions performed by the source network device in the above-mentioned BWP switching method. For example, according to the measurement result of the target BWP, it is determined that the terminal device group needs to be switched from the source BWP to the target BWP.
  • the transceiver 1102 is used to support the communication device 1100 to communicate with other devices, and implement receiving and/or sending functions. For example, the measurement task of the target BWP or the third handover instruction is issued to the first terminal device.
  • the communication device 1100 may further include one or more memories, which are coupled to the processor and used to store necessary program instructions and/or data of the communication device 1100.
  • the one or more memories may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the communication apparatus 1100 may be a network device, such as a gNB, an eNB, etc., and the transceiver may be a transceiver circuit.
  • the transceiver may also be an input/output circuit or interface.
  • the communication device 1100 may also be a communication chip.
  • the transceiver may be an input/output circuit or interface of the communication chip.
  • the present application provides a communication system, which includes the aforementioned one or more network devices and multiple terminal devices.
  • This application provides a readable storage medium that stores a program or instruction.
  • the program or instruction runs on a computer, the computer executes the function of the terminal device in the BWP switching method shown in FIG. 3 or FIG. 4, or FIG. The function of the source network device in the BWP switching method shown.
  • This application provides a computer program product, including computer program code, which when the computer program code runs on a computer, enables the computer to function as a terminal device in the BWP switching method shown in Figure 3 or Figure 4, or as shown in Figure 5 The function of the source network device in the BWP switching method.
  • the processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), and dedicated integration Circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DRRAM).
  • the foregoing embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware, or any other combination.
  • the above-mentioned embodiments may 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 or computer programs.
  • the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, 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.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as infrared, wireless, microwave, etc.).
  • 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 a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • 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 represent one of the following: a; b; c; a and b; a and c; b and c; a, b, and c, where a , B, c can be single or multiple.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

Landscapes

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

Abstract

本申请提供一种BWP切换方法及通信装置，能够解决终端设备组在BWP切换过程中的组内通信中断的问题，从而提高终端设备组内通信的可靠性。该方法应用于支持多BWP的终端设备组中的第一终端设备，该终端设备组还包括第二终端设备。该方法包括：第一终端设备能够在源BWP上保持与第二终端设备通信的同时，完成目标BWP的测量，然后根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP，并在源BWP上指示第二终端设备在目标BWP上与第一终端设备通信。适用于终端设备组在切换场景、移出场景或移入场景中的BWP切换。

Description

BWP切换方法及通信装置
本申请要求于2019年02月11日提交国家知识产权局、申请号为201910110322.4、申请名称为“BWP切换方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种BWP切换方法及通信装置。
背景技术
目前，多个终端设备，如手机和车载终端，可以组成一个终端设备组，并在同一个部分带宽(bandwidth part，BWP，又称为带宽部分)上建立侧行链路(sidelink，SL)，以便实现组内直接通信。例如，当终端设备组处于同一个网络设备的覆盖区域时，终端设备组可以根据该网络设备配置的BWP建立侧行链路。又例如，当终端设备组处于网络未覆盖区域时，终端设备组可以根据预配置(pre-congfigured)BWP建立侧行链路。
然而，在终端设备组移动的过程中，当组内不同终端设备处于不同的网络覆盖区域时，组内不同终端设备配置的BWP也不同，从而导致组内直接通信中断，可靠性较差。例如，在小区切换过程中，一部分终端设备已经进入目标网络设备的覆盖区域，配置的BWP为目标网络设备对应的BWP，而另一些终端设备仍然处于源网络设备的覆盖区域，配置的BWP为源网络设备对应的BWP。又例如，在终端设备组移出或移入网络覆盖区域的过程中，处于网络覆盖区域的终端设备配置的BWP为网络设备对应的BWP，而处于网络未覆盖区域的终端设备配置BWP为预配置BWP。
发明内容
本申请提供一种BWP切换方法及通信装置，能够解决终端设备组在切换BWP过程中组内直接通信中断问题，或者减少终端设备组在切换BWP过程中的组内直接通信的中断时长，从而提高终端设备组内通信的可靠性。
第一方面，提供一种BWP切换方法。该方法适用于终端设备组中的第一终端设备；该终端设备组还包括第二终端设备，且该终端设备组支持多BWP模式。上述BWP切换方法包括：第一终端设备在源BWP上与第二终端设备通信的同时，测量目标BWP，并根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。然后，第一终端设备在源BWP上，向第二终端设备发送第一切换指令。其中，第一切换指令用于指示第二终端设备从源BWP切换至目标BWP。之后，第一终端设备在目标BWP上和源BWP上与第二终端设备通信。
本申请提供的BWP切换方法，第一终端设备能够在源BWP上保持与第二终端设备通信的同时，完成目标BWP的测量，然后根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP，之后在源BWP上指示第二终端设备在目标BWP 上与第一终端设备通信，可以解决在终端设备组在小区切换或进入无线网络覆盖区域或移出无线网络的覆盖区域的过程中，终端设备组内的不同终端设备切换至目标BWP的时间不一致所导致的终端设备组内通信中断的问题，能够提高切换BWP期间终端设备组内通信的可靠性。
在一种可能的设计方法中，上述第一切换指令包括目标BWP的配置信息。
可选地，上述第一切换指令还可以包括：第二终端设备启动目标BWP的启动时间。所述启动目标BWP是指在所述BWP上进行数据通信。
进一步地，上述第一切换指令还可以包括：第二终端设备停止与第一终端设备在源BWP上通信的停止时间。
在一种可能的设计方法中，上述BWP切换方法还可以包括：在第一终端设备在目标BWP上和源BWP上与第二终端设备通信之后，第一终端设备停止在源BWP上与第二终端设备通信，以便降低第一终端设备的功耗。
第二方面，提供一种BWP切换方法。该方法适用于终端设备组中的第一终端设备；该终端设备组还包括第二终端设备，且该终端设备组仅支持单BWP模式。所述单BWP模式指在同一时刻和/或同一载波上仅可以激活一个BWP，即只在一个BWP上进行通信。上述BWP切换方法包括：第一终端设备在源BWP上与第二终端设备通信。然后，第一终端设备从源BWP切换至目标BWP，测量目标BWP，并根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。之后，第一终端设备回切至源BWP，并在源BWP上向第二终端设备发送第二切换指令。其中，第二切换指令用于指示第二终端设备从源BWP切换至目标BWP。最后，第一终端设备再次从源BWP切换至目标BWP，并在目标BWP上与第二终端设备通信。
本申请提供的BWP切换方法，第一终端设备能够在从源BWP切换至目标BWP完成目标BWP的测量后，若第一终端设备根据目标BWP的测量结果确定终端设备组需要从源BWP切换至目标BWP，则回切至源BWP向第二终端设备发送第二切换指令，指示第二终端设备从源BWP切换至目标BWP上与第二终端设备通信，可以有效降低在终端设备组在小区切换或进入无线网络覆盖区域或移出无线网络的覆盖区域的过程中，终端设备组内的不同终端设备切换至目标BWP的时间偏差较大所导致的终端设备组内通信中断时长，从而提高切换BWP期间终端设备组内通信的可靠性。
在一种可能的设计方法中，上述第二切换指令包括第一切换时间，第一切换时间为第二终端设备从源BWP切换至目标BWP的时间。相应地，上述第一终端设备再次从源BWP切换至目标BWP，可以包括：第一终端设备在第二切换时间再次从源BWP切换至所述目标BWP。其中，第一切换时间与第二切换时间之间的时间偏差小于时间偏差阈值，以便减少终端设备组在从源BWP切换至目标BWP过程中的通信中断时长，进一步提高终端设备组内通信的可靠性。
在一种可能的设计方法中，上述第二切换指令还包括目标BWP的配置信息。
在一种可能的设计方法中，上述BWP切换方法还可以包括如下至少一项：在第一终端设备测量目标BWP的过程中，第一终端设备通过网络设备与第二终端设备通信；在第一终端设备从源BWP切换至目标BWP的过程中，第一终端设备通过网络设备与第二终端设备通信。
在一种可能的设计方法中，上述第一方面或第二方面所述的BWP切换方法，还可以包括如下之一：第一终端设备接收源网络设备或目标网络设备发送的目标BWP的测量任务；第一终端设备未检测到任何网络设备发送的无线信号，则自行启动目标BWP的测量任务。
第三方面，提供一种BWP切换方法。该方法适用于源网络设备。上述BWP切换方法包括：源网络设备接收第一终端设备发送的目标BWP的测量结果，并根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。其中，第一终端设备属于终端设备组，终端设备组还包括第二终端设备。然后，源网络设备向终端设备组发送第三切换指令。其中，第三切换指令用于指示终端设备组从源BWP切换至目标BWP。
本申请提供的BWP切换方法，源网络设备能够根据第一终端设备上报的目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP，并向终端设备组中的每个终端设备下发第三切换指令，以便终端设备组中的每个终端根据第三切换指令从源BWP切换至目标BWP，并在目标BWP上重建终端设备组在侧行链路SL上的组内直接通信，可以避免或者有效减少终端设备组在小区切换或进入无线网络覆盖区域或移出无线网络的覆盖区域的过程中，终端设备组在侧行链路SL上的组内直接通信中断时长，从而提高切换BWP期间终端设备组内通信的可靠性。
在一种可能的设计方法中，上述第三切换指令包括目标BWP的配置信息。
可选地，上述第三切换指令还可以包括：第三切换时间和第四切换时间。其中，第三切换时间用于第一终端设备再次从源BWP切换至目标BWP，第四切换时间用于第二终端设备从源BWP切换至目标BWP，且第三切换时间与第四切换时间之间的时间偏差小于时间偏差阈值。
可选地，上述BWP切换方法还可以包括：源网络设备向第一终端设备发送目标BWP的测量任务。
在上述第一方面至第三方面，或第一方面至第三方面中任一种可能的实现方式所述的BWP切换方法中，上述根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP，可以包括：若目标BWP的测量结果满足BWP切换条件，则确定终端设备组需要从源BWP切换至目标BWP。
其中，BWP切换条件包括如下至少一项：目标BWP的信号强度高于BWP信号强度阈值；目标BWP的信号质量高于SL信号质量阈值；源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；源BWP上的空闲资源数量少于目标BWP上的空闲资源数量的连续时长大于第三时长阈值；源BWP上不存在优先级高于优先级阈值的业务。
第四方面，提供一种通信装置。该装置适用于终端设备组中的第一终端设备。其中，该终端设备组还包括第二终端设备，且该终端设备组支持多BWP模式。第四方面所述的通信装置包括：第一通信模块、第二通信模块和控制模块。其中，第一通信模块，用于在源BWP上与第二终端设备通信。控制模块，用于第一通信模块在源BWP上与第二终端设备通信的同时，控制第二通信模块测量目标BWP，以及根据目标BWP 的测量结果，确定终端设备组需要从源BWP切换至目标BWP。第一通信模块，还用于在源BWP上，向第二终端设备发送第一切换指令。其中，第一切换指令用于指示第二终端设备从源BWP切换至目标BWP。第二通信模块，用于在目标BWP上与第二终端设备通信。
在一种可能的设计中，上述第一切换指令包括目标BWP的配置信息。
可选地，上述第一切换指令还可以包括：第二终端设备启动目标BWP的启动时间。
进一步地，上述第一切换指令还可以包括：第二终端设备停止与第一终端设备在源BWP上通信的停止时间。
在一种可能的设计中，上述通信装置还可以包括：第三通信模块。其中，第三通信模块，用于接收源网络设备发送的目标BWP的测量任务。相应地，控制模块，还用于若第三通信模块未检测到任何网络设备发送的无线信号，则控制第二通信模块自行启动目标BWP的测量任务。第三通信模块，还用于接收目标网络设备发送的目标BWP的测量任务。
在一种可能的设计中，在第一通信模块和第二通信模块分别在目标BWP上和源BWP上与第二终端设备通信之后，上述控制模块还可以用于：控制第一通信模块停止在源BWP上与第二终端设备通信，以便降低第一终端设备的功耗。
第五方面，提供另一种通信装置。该装置适用于终端设备组中的第一终端设备。其中，该终端设备组还包括第二终端设备，且该终端设备组仅支持单BWP模式。上述通信装置包括：第四通信模块和控制模块。其中，第四通信模块，用于在源BWP上与第二终端设备通信。控制模块，用于控制第四通信模块从源BWP切换至目标BWP，测量目标BWP，并根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。控制模块，还用于在控制第四通信模块回切至源BWP，并在源BWP上向第二终端设备发送第二切换指令之后，控制第四通信模块在第二切换时间再次从源BWP切换至目标BWP，并在目标BWP上与第二终端设备通信。其中，第二切换指令用于指示第二终端设备在第一切换时间从源BWP切换至目标BWP，第一切换时间与第二切换时间之间的时间偏差小于时间偏差阈值。
在一种可能的设计中，上述第二切换指令包括第一切换时间，第一切换时间为第二终端设备从源BWP切换至目标BWP的时间。相应地，上述控制模块，还用于控制第四通信模块在第二切换时间再次从源BWP切换至目标BWP。其中，第一切换时间与第二切换时间之间的时间偏差小于时间偏差阈值。
在一种可能的设计中，上述第二切换指令还包括目标BWP的配置信息。
在一种可能的设计中，上述通信装置还包括：第五通信模块。其中，第五通信模块，用于在控制模块控制第四通信模块测量目标BWP的过程中，通过网络设备与第二终端设备通信，以及在控制模块控制第四通信模块从源BWP切换至目标BWP的过程中，通过网络设备与第二终端设备通信。
可选地，上述第五通信模块，还用于接收源网络设备或目标网络设备发送的目标BWP的测量任务。
可选地，控制模块，还用于若第五通信模块未检测到任何网络设备发送的无线信 号，则控制第四通信模块自行启动目标BWP的测量任务。
第六方面，提供又一种通信装置。该装置适用于源网络设备。该通信装置包括：第六通信模块和控制模块。其中，第六通信模块，用于接收第一终端设备发送的目标BWP的测量结果。其中，第一终端设备属于终端设备组，终端设备组还包括第二终端设备。控制模块，用于根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。第六通信模块，还用于向终端设备组发送第三切换指令。其中，第三切换指令用于指示终端设备组从源BWP切换至目标BWP。
在一种可能的设计中，上述第三切换指令包括目标BWP的配置信息。
在一种可能的设计中，上述第三切换指令还可以包括：第三切换时间和第四切换时间。其中，第三切换时间用于第一终端设备再次从源BWP切换至目标BWP，第四切换时间用于第二终端设备从源BWP切换至目标BWP，且第三切换时间与第四切换时间之间的时间偏差小于时间偏差阈值。
可选地，上述第六通信模块，还用于向第一终端设备发送目标BWP的测量任务。
在上述第一方面至第三方面，或第一方面至第三方面中任一种可能的实现方式所述的通信装置中，上述控制模块，还用于若目标BWP的测量结果满足BWP切换条件，则确定终端设备组需要从源BWP切换至目标BWP。
其中，BWP切换条件包括如下至少一项：目标BWP的信号强度高于BWP信号强度阈值；目标BWP的信号质量高于SL信号质量阈值；源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；源BWP上的空闲资源数量少于目标BWP上的空闲资源数量的连续时长大于第三时长阈值；源BWP上不存在优先级高于优先级阈值的业务。
第七方面，提供一种通信装置。该装置包括：处理器和收发器，且处理器与收发器和存储器耦合。存储器，用于存储计算机程序。处理器，用于执行存储器中存储的计算机程序，使得通信装置执行如第一方面或第一方面中任一种可能的实现方式所述的BWP切换方法，或者执行如第二方面或第二方面中任一种可能的实现方式所述的BWP切换方法，执行如第三方面或第三方面中任一种可能的实现方式所述的BWP切换方法。
第八方面，提供一种通信系统。该通信系统包括：多个终端设备，如上述第一终端设备和第二终端设备，以及一个或多个网络设备，如源网络设备和目标网络设备。
第九方面，提供一种可读存储介质，存储有程序或指令，当程序或指令在计算机上运行时，使得计算机执行如第一方面或第一方面中任一种可能的实现方式所述的BWP切换方法，或者执行如第二方面或第二方面中任一种可能的实现方式所述的BWP切换方法，执行如第三方面或第三方面中任一种可能的实现方式所述的BWP切换方法。
第十方面，提供一种计算机程序产品，包括计算机程序代码，当计算机程序代码在计算机上运行时，使得计算机执行如第一方面或第一方面中任一种可能的实现方式所述的BWP切换方法，或者执行如第二方面或第二方面中任一种可能的实现方式所述的BWP切换方法，执行如第三方面或第三方面中任一种可能的实现方式所述的 BWP切换方法。
附图说明
图1为本申请提供的BWP切换方法所适用的通信系统的结构示意图；
图2A为本申请提供的BWP切换方法所适用的切换场景的示意图；
图2B为本申请提供的BWP切换方法所适用的移出场景的示意图；
图2C为本申请提供的BWP切换方法所适用的移入场景的示意图；
图3为本申请提供的BWP切换方法的流程示意图一；
图4为本申请提供的BWP切换方法的流程示意图二；
图5为本申请提供的BWP切换方法的流程示意图三；
图6为本申请实施例提供的通信装置的结构示意图一；
图7为本申请实施例提供的通信装置的结构示意图二；
图8为本申请实施例提供的通信装置的结构示意图三；
图9为本申请实施例提供的通信装置的结构示意图四；
图10为本申请实施例提供的通信装置的结构示意图五；
图11为本申请实施例提供的通信装置的结构示意图六。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种单一制式的无线通信系统：第四代(4th generation，4G)系统，如长期演进(long term evolution，LTE)系统，第五代(5th generation，5G)系统，如新无线(new radio，NR)系统，窄带物联网(NB-IoT,Narrow Band-Internet of Things)系统，车联网系统(telematics)，机器通信(MTC,Machine Type Communication)系统，及未来的通信系统，如6G系统等，也可以应用于采用两种及两种以上制式的多制式无线通信系统，如采用LTE和NR两种制式的异构系统，本申请对此不做限定。
本申请实施例以NR系统为例进行说明。应当指出的是，本申请实施例提供的技术方案还可以应用于其他无线通信系统，如上述LTE系统、车联网系统等，相应的名称也可以用其他无线通信系统中的对应功能的名称进行替代。
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是，各个系统可以包括另外的设备、组件、模块等，并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外，还可以使用这些方案的组合。
另外，在本申请实施例中，“示例”、“例如”用于表示作例子、例证或说明。本申请中被描述为“示例”、“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
本申请实施例中，“的(of)”，“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对 于类似的技术问题，同样适用。
为便于理解本申请实施例，首先以图1中示出的无线通信系统为例详细说明适用于本申请实施例的无线通信系统。
图1是本申请的实施例应用的移动通信系统的架构示意图。如图1所示，该移动通信系统包括核心网设备、无线接入网设备和至少一个终端设备(如图1中的终端设备1和终端设备2)。终端设备通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网设备连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端设备可以是固定位置的，也可以是可移动的。图1只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括无线中继设备和无线回传设备，在图1中未画出。本申请的实施例对该移动通信系统中包括的核心网设备、无线接入网设备和终端设备的数量不做限定。
无线接入网设备是终端设备通过无线方式接入到该移动通信系统中的接入设备，可以是基站NodeB、演进型基站eNodeB、5G移动通信系统中的基站、未来移动通信系统中的基站或WiFi系统中的接入节点等，本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。
终端设备也可以称为终端设备(terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端设备(mobile terminal，MT)等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备等等。
无线接入网设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和卫星上。本申请的实施例对无线接入网设备和终端设备的应用场景不做限定。
本申请的实施例可以适用于下行信号传输，也可以适用于上行信号传输，还可以适用于设备到设备(device to device，D2D)的信号传输。对于下行信号传输，发送设备是无线接入网设备，对应的接收设备是终端设备。对于上行信号传输，发送设备是终端设备，对应的接收设备是无线接入网设备。对于D2D的信号传输，发送设备是终端设备，对应的接收设备也是终端设备。本申请的实施例对信号的传输方向不做限定。
无线接入网设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过免授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和免授权频谱进行通信。无线接入网设备和终端设备之间以及终端设备和终端设备之间可以通过6G以下的频谱进行通信，也可以通过6G以上的频谱进行通信，还可以同时使用6G以下的频谱和6G以上的频谱进行通信。本申请的实施例对无线接入网设备和终端设备之间所使用的频谱资源不做限定。
应理解，图1仅为便于理解而示例的简化示意图，该通信系统中还可以包括其他网络设备或者还可以包括其他终端设备，图1中未予以画出。
为了满足高系统容量和高数据速率的要求，无线通信系统的网络设备，如NR系统中的g节点(g Node B，gNB)，通常需要支持一个较大带宽，如100兆赫兹(mega herts，MHz)、200MHz，而终端设备通常不需要支持与网络设备同等大小的带宽。例如，终端设备很可能只需要支持40MHz、60MHz带宽即可满足通信需求。因此，在终端设备与网络设备之间的上行链路(uplink，UL)/下行链路(downlink，DL)上引入部分带宽(bandwidth part，BWP，又称为带宽部分)，以降低终端设备的功耗和成本。其中，上述部分带宽是指，无线接入网设备为终端设备配置的一组连续的物理资源块(physical resource block，PRB)。其中，上述一组连续的PRB的频谱带宽通常要小于无线接入网设备所支持的总频谱带宽。
容易理解，一个终端设备可以只配置一个激活的BWP，也可以配置多个激活的BWP。当只配置一个BWP时，终端设备可以使用该BWP与无线网络在上下行链路上通信，也可以使用该BWP与另一个终端设备在侧行链路(sidelink，SL)上直接通信。当配置有多个BWP时，终端设备可以使用全部BWP与无线网络在上下行链路上通信，也可以使用全部BWP与其他一个或多个终端设备在侧行链路上直接通信，还可以在使用一部分BWP与无线网络在上下行链路上通信的同时，使用另一部分BWP与一个或多个其他终端设备在侧行链路上直接通信，本申请对此不做限定。
例如，在车联网应用场景下，车载终端设备可以支持车到车(vehicle to vehicle，V2V)、车到行人(vehicle to pedestrian，V2P)、车到基础设施(vehicle to infrastructure，V2I)、车到网络(vehicle to network，V2N)等各种形式的车到任意物体(vehicle to X，V2X)通信。
目前，若终端设备位于网络覆盖区域(in coverage)，则终端设备使用无线接入网设备对应的BWP，如可以通过无线资源控制(radio resource control，RRC)信令或者广播(broadcast)信令下发的BWP，与其他终端设备在侧行链路上直接通信，否则使用预配置(pre-configured)BWP与其他终端设备在侧行链路上直接通信。也就是说，现有终端设备只能根据预配置BWP，或者该终端设备所在位置的网络设备下发的BWP，被动地完成自身BWP配置。其中，预配置BWP可以是终端设备出厂时根据协议规定配置的默认BWP。
实际应用中，多个终端设备也可以组建终端设备组，并通过组内通信协调彼此行动。例如，上述终端设备可以为车载终端，上述终端设备组可以为车载终端设备组，可以通过车载终端设备组内通信，协调组内车辆行动，如改变行驶路线、协调车速和车距等。
如图2A-图2C所示，终端设备组包括第一终端设备、第二终端设备和第三终端设备。
在如图2A所示的小区切换场景(下文简称切换场景)下，当终端设备组位于源网络设备的覆盖区域时，终端设备组使用源网络设备配置的源BWP在侧行链路上通信。在终端设备组从源网络设备覆盖区域移入目标网络设备覆盖区域后，终端设备组使用目标网络设备配置的目标BWP在侧行链路上通信。
在如图2B所示的移出网络覆盖区域场景(下文简称移出场景)下，在终端设备组从网络覆盖区域移出至网络未覆盖区域后，如从源网络设备覆盖区域移出至没有网络设备覆盖的区域，终端设备组使用预配置BWP在侧行链路上通信。
在如图2C所示移入网络覆盖区域场景(下文简称移入场景)下，当终端设备组位于网络覆盖区域之外(out of coverage，OOC)时，终端设备组使用预配置BWP在侧行链路上通信。在终端设备组从网络未覆盖区域移入目标网络设备覆盖区域后，终端设备组使用目标网络设备配置的目标BWP在侧行链路上通信。
然而，终端设备组内的不同终端设备，在上述3种场景下完成新BWP配置的时间通常是不同的。因此，当一部分终端设备已配置为新BWP，而另一部分终端设备还在使用原BWP，且当新BWP与原BWP不同时，会导致上述两部分终端设备在侧行链路上存在较长时间的通信中断，从而终端设备组内直接通信的可靠性，造成不利影响。
其中，上述终端设备组内直接通信中断时长可以根据终端设备组的移动速度，以及最先完成新BWP配置的终端设备与最后完成新BWP配置的终端设备之间的距离确定。例如，如图2A所示，假定终端设备组均为移动速度为100千米每小时(kilometres per hour，km/h)车载终端设备，且第一终端设备、第二终端设备、第三终端设备依次间隔100米(安全车距)，则第一终端设备与第三终端设备之间的距离为200米，上述通信中断时长大约为：200/(100*1000/3600)＝7.2秒(second，s)，即终端设备组内通信中断时间较长，存在较高的行车安全风险。
针对上述问题，本申请实施例提供三种BWP切换方法。下面结合附图分别说明。
图3为本申请实施例提供的BWP切换方法的流程示意图一，可以应用于图1所示的无线通信系统中，以解决在如图2A-图2C所示的任一种场景下终端设备组内直接通信中断问题，能够提高终端设备组内直接通信的可靠性。
其中，该终端设备组包括第一终端设备、第二终端设备和第三终端设备，且该终端设备组支持多BWP模式。
上述该终端设备组支持多BWP模式是指，该终端设备组内的每个终端设备均支持在2个或2个以上的BWP上与该终端设备组内的其他终端设备直接通信。例如，每个终端设备均配置有2个或2个以上可独立控制的通信单元，如2套或2套以上的射频电路，每个通信单元均可独立支持一个BWP。
下面以第一终端设备和第二终端设备为例，详细说明本申请实施例提供的BWP切换方法一。
如图3所示，上述BWP切换方法一可以包括S301-S305：
S301，第一终端设备在源BWP上与第二终端设备通信。
可选地，对于如图2A所示的切换场景，或者如图2B所示的移出场景，源BWP为源网络设备对应的BWP。具体地，当终端设备组处于源网络设备覆盖区域时，源网络设备通过Uu口的RRC信令下发源BWP的配置信息。终端设备组中的每个终端设备均根据源BWP的配置信息，建立侧行链路SL上的组内直接通信。
可选地，对于如图2C所示的移入场景，源BWP为预配置BWP。具体地，预配置BWP可以是终端设备出厂时根据协议规定预先配置的同一个BWP。当终端设备组 位于网络未覆盖区域时，终端设备组中的每个终端设备均根据预配置BWP的配置信息，建立侧行链路SL上的组内直接通信。
示例性地，上述源BWP的配置信息可以包括如下至少一项：源BWP的BWP标识、源BWP的载波频率和带宽、在该BWP上使用的载波间隔、BWP激活时间、BWP去激活时间，以及源BWP上的共享资源的资源标识等。
S302，第一终端设备测量目标BWP。
可选地，对于如图2A所示的切换场景，或者如图2C所示的移入场景，目标BWP是指目标网络设备对应的BWP。当终端设备组处于目标网络设备覆盖区域时，终端设备组需要在目标BWP上建立侧行链路SL上的组内直接通信。
可选地，对于如图2B所示的移出场景，目标BWP是指预配置BWP。当终端设备组处于网络未覆盖区域时，终端设备组需要在预配置BWP上建立侧行链路SL上的组内直接通信。
当然，目标BWP可能有一个，也可能有多个，此处不作限定。例如，对于如图2A所示的切换场景，当存在多个邻区时，可能存在多个目标BWP。
示例性地，上述目标BWP的测量任务可以包括一个或多个目标BWP的配置信息。具体地，可以包括如下至少一项：
目标小区的物理小区标识列表(phisical cell identifier list，PCID list)；
各目标小区对应的目标BWP列表(sidelink BWP associated PCID list)；
各目标BWP上的SL资源池(sidelink resource pool within BWP)；
各目标BWP的测量周期；
用于目标BWP切换/打开/关闭的Uu口信号阈值(Uu-RSRP threshold for sidelink BWP switching/open/close)；
用于目标BWP切换/打开/关闭的SL信号阈值(SL-RSRP threshold for sidelink BWP switching/open/close)。
上述Uu口信号阈值可以包括Uu口信号强度阈值和Uu口信号质量阈值中的至少一种，如Uu口的参考信号接收功率(reference signal received power，Uu-RSRP)阈值、Uu口的参考信号接收质量(reference signal received quality，Uu-RSRP)阈值。同理，SL上的信号阈值也可以包括SL上的信号强度阈值和SL上的信号质量阈值中的至少一种，如SL上的RSRP阈值、SL上的RSRQ阈值等。
上述目标BWP的测量任务可以是周期性地，也可以是网络事件触发的。因此，在一种可能的设计方法中，第一终端设备可以根据测量任务携带的测量周期，周期性地启动目标BWP的测量。容易理解，上述目标BWP的测量周期可以与服务小区/邻区的测量周期相同，也可以不同，本申请对此不作限定。
在另一种可能的设计方法中，第一终端设备也可以根据测量启动条件，启动目标BWP的测量。
其中，测量启动条件可以包括如下至少一项：
第一终端设备检测到源网络设备发送的网络信号小于源网络信号阈值；
第一终端设备检测到目标网络设备发送的网络信号大于目标网络信号阈值；
第一终端设备检测到目标网络设备发送的网络信号与源网络设备发送的网络信号 的差值大于信号偏差阈值；
第一终端设备检测到的所有网络信号小于网络信号阈值；
第一终端设备检测到的侧行链路SL信号小于SL信号阈值。
进一步地，上述第一终端设备检测到的所有网络信号小于网络信号阈值，可以包括：第一终端设备未检测到网络信号，第一终端设备已经处于网络未覆盖区域。
需要说明的是，上述网络信号阈值可以是信号强度阈值，如S302所述的Uu-RSRP阈值，也可以是信号质量阈值，如S302所述的SL-RSRQ阈值，此处不做限定。
容易理解，在执行上述S302第一终端设备测量目标BWP之前，上述BWP切换方法一，还可以包括如下之一：
第一终端设备接收源网络设备下发的目标BWP的测量任务；
第一终端设备接收目标网络设备下发的目标BWP的测量任务；
第一终端设备自行启动预先配置的目标BWP的测量任务。
可选地，对于如图2A所示的切换场景，以及如图2B所示的移出场景，第一终端设备接收源网络设备通过Uu链路上的RRC信令下发的目标BWP的测量任务。
可选地，对于如图2C所示的移入场景，当第一终端设备进入目标网络设备的覆盖区域后，接收目标网络设备通过Uu链路上的RRC信令下发的目标BWP的测量任务。
S303，第一终端设备根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。
具体地，上述S303，根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP，可以具体实现为：
若目标BWP的测量结果满足BWP切换条件，则确定终端设备组需要从源BWP切换至目标BWP。
其中，上述BWP切换条件可以包括如下至少一项：
目标BWP的信号质量高于SL信号质量阈值；
目标BWP的信号强度高于SL信号强度阈值；
源BWP上的空闲资源占比(idle resource ratio)高于第一占比阈值的连续时长大于第一时长阈值；
目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；
源BWP上的空闲资源数量少于目标BWP上的空闲资源数量的连续时长大于第三时长阈值；
源BWP上不存在优先级高于优先级阈值的业务。
上述源BWP上的空闲资源占比是指，源BWP上的空闲资源，如空闲RB，的数量，与源BWP上的资源总量的比值。同理，上述目标BWP上的空闲资源占比是指，目标BWP上的空闲资源，如空闲RB，的数量，与目标BWP上的资源总量的比值。
上述源BWP上的空闲资源占比高于第一占比阈值，是指工作于源BWP上的终端设备的数量较少，意味着终端设备组中的大部分终端设备可能已经切换至目标BWP或者该终端设备已经驶离源小区，因而与源小区中其他在源BWP上通信的终端距离较远。为了与组内其他终端保持一致或与距离较近的其他终端设备通信，第一终端设 备也需要尽快切换至目标BWP。其中，第一占比阈值通常配置为一个较大值，如80％，70％等。
上述目标BWP上的空闲资源占比低于第二占比阈值，是指工作于目标BWP上的终端设备的数量较多，意味着终端设备组中的大部分终端设备已经切换至目标BWP。为了与组内其他终端保持一致，第一终端设备也需要尽快切换至目标BWP。其中，第二占比阈值通常配置为一个较小值，如20％，30％等。
上述源BWP上的空闲资源数量小于目标BWP上的空闲资源数量，是指目标BWP的系统容量高于原BWP的系统容量。因此，为了容纳更多的终端设备，终端设备组中的每个终端设备，如第一终端设备，都需要尽快从源BWP切换至目标BWP。
需要说明的是，为了确保切换判决的稳定性和可靠性，避免乒乓切换，上述源BWP上的空闲资源占比高于第一占比阈值的统计时长、上述目标BWP上的空闲资源占比低于第二占比阈值的统计时长，以及上述源BWP上的空闲资源数量大于目标BWP上的空闲资源数量的统计时长均为连续时长。并且，上述第一时长阈值、第二时长阈值和第三时长阈值均需要设置一个较大值，如10个时隙(slot)、100毫秒等。容易理解，上述3个时长阈值可以相同，也可以不同，本申请对此不作限定。
上述业务优先级可以根据业务的速率需求、时延需求、误码率需求等多个因素综合确定，此处不再赘述。
S304，第一终端设备在源BWP上，向第二终端设备发送第一切换指令。
其中，第一切换指令用于指示第二终端设备从源BWP切换至目标BWP。
在一种可能的设计方法中，上述第一切换指令包括目标BWP的配置信息。
示例性地，目标小区的物理小区标识(phisical cell identifier，PCID)；
目标小区对应的目标BWP(sidelink BWP associated PCID)；
目标BWP上的SL资源池(sidelink resource pool within BWP)。
需要说明的是，第一切换指令包括的目标BWP，可以是测量任务携带的配置信息中的一个目标BWP的配置信息，也可以是测量任务未携带，但是由第一终端检测到且满足BWP切换条件的目标BWP，本申请对此不作限定。
可选地，第一终端设备可以在侧行链路SL上的控制信道，如物理侧行控制信道(physical sidelink control channel，PSCCH)上向第二终端设备发送第一切换指令，也可以在侧行链路SL上的数据信道，如物理侧行共享信道(physical sidelink shared channel，PSSCH)上向第二终端设备发送第一切换指令，本申请对此不作限定。
可选地，对于如图2A所示的切换场景，以及如图2B所示的移出场景，S304第一终端设备在源BWP上，向第二终端设备发送第一切换指令，还可以替换为如下步骤：
第一终端设备将第一切换指令通过Uu口上报给源网络设备。
之后，再由源网络设备通过Uu口下发第一切换指令给终端设备组内的其他终端设备，如第二终端设备。
同理，对于如图2B所示的移入场景，S304第一终端设备在源BWP上，向第二终端设备发送第一切换指令，还可以替换为如下步骤：
第一终端设备将第一切换指令通过Uu口上报给目标网络设备。
在终端设备组内的其他终端设备如目标网络设备的覆盖区域之后,再由目标网络设备通过Uu口下发第一切换指令给终端设备组内的其他终端设备，如第二终端设备。
可选地，上述第一切换指令还可以包括：第二终端设备启动目标BWP的启动时间。
需要说明的是，上述启动时间可以是第一切换指令直接携带的启动时间，也可以是第一切换指令携带的启动时间确定规则，本申请对此不作限定。
可选地，第二终端设备可以在接收到第一切换指令后立即启动在目标BWP上的通信。
可选地，第二终端设备也可以在接收到第一切换指令后延迟指定时长后启动在目标BWP上的通信。
可选地，第二终端设备还可以根据第二终端设备对源BWP和目标BWP的测量结果自行确定目标BWP的启动时间。
可选地，第二终端设备还可以按照与第一终端设备之间的侧行链路SL的信道测量结果，折算成第二终端设备对应的目标BWP的启动时间。
S305，第一终端设备在目标BWP上和源BWP上与第二终端设备通信。
具体地，第二终端设备在接收到第一切换指令后，启动在目标BWP上的测量和通信。至此，第一终端设备与第二终端设备之间同时建立了在源BWP上的侧行链路SL和目标BWP上的侧行链路SL。也就是说，第一终端设备和第二终端设备之间存在双连接。容易理解，组内信息可以在源BWP上传输，也可以在目标BWP上传输，还可以在源BWP和目标BWP上同时传输，此处不作限定。
容易理解，在第二终端设备与第一终端设备在目标BWP上的通信建立之后，第一终端设备还可以断开与第二终端设备在源BWP上的直接通信，以便降低第一终端设备的功耗。因此，上述BWP切换方法一，还可以包括如下步骤：
第一终端设备与第二终端设备停止在源BWP上通信。
相应地，在第二终端设备与第一终端设备在目标BWP上的通信建立之后，第二终端设备也可以断开其与第一终端设备在源BWP上的直接通信，以便降低第二终端设备的功耗。因此，进一步地，上述第一切换指令还可以包括：第二终端设备停止与第一终端设备在源BWP上直接通信的停止时间。
可选地，第二终端设备可以设置一个本地定时(timer)，在该本地定时超时后，断开第一终端设备在源BWP上与第一终端设备的通信。
可选地，第二终端设备也可以根据源BWP和目标BWP的移动性测量结果确定何时断开在源BWP上与第一终端设备之间的测量链路SL。
容易理解，上述终端设备组还可以包括其他终端设备，如第三终端设备。第三终端设备的操作可以参考第二终端设备的相关描述，此处不再赘述。
本申请提供的BWP切换方法一，第一终端设备能够在源BWP上保持与第二终端设备通信的同时，完成目标BWP的测量，然后根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP，之后在源BWP上指示第二终端设备在目标BWP上与第一终端设备通信，可以解决在终端设备组在小区切换或进入无线网络覆盖区域或移出无线网络的覆盖区域的过程中，终端设备组内的不同终端设备切换至目标 BWP的时间不一致所导致的终端设备组内通信中断的问题，能够提高切换BWP期间终端设备组内通信的可靠性。
图4为本申请实施例提供的BWP切换方法二的流程示意图，可以应用于图1所示的无线通信系统中，以减少在如图2A-图2C所示的任一种场景下终端设备组内直接通信中断时长，能够提高终端设备组内直接通信的可靠性。其中，该终端设备组包括第一终端设备、第二终端设备和第三终端设备，且该终端设备组仅支持单BWP模式。
上述该终端设备组支持单BWP模式是指，该终端设备组内的每个终端设备均只支持在1个BWP上与该终端设备组内的其他终端设备直接通信。例如，每个终端设备均只配置有1个可用于侧行链路SL的通信单元，如1套射频电路。
下面以第一终端设备和第二终端设备为例，详细说明本申请实施例提供的BWP切换方法二。
如图4所示，上述BWP切换方法二可以包括S401-S405：
S401，第一终端设备在源BWP上与第二终端设备通信。
S401与S301相同，此处不再赘述。
S402，第一终端设备从源BWP切换至目标BWP，测量目标BWP。
与BWP切换方法一类似，目标BWP的测量任务的接收方式、启动条件，可以参考S302中的相关描述，此处不再赘述。
需要说明的是，鉴于第一终端设备仅支持单BWP模式，当需要测量目标BWP时，第一终端设备需要从源BWP切换至目标BWP，即将第一终端设备中用于侧行链路SL上通信的通信单元配置为目标BWP。
因此，在执行S402的过程中，第一终端设备与终端设备组内的其他终端设备之间在侧行链路SL上的通信会中断。有鉴于此，在本申请实施例中，第一终端设备与终端设备组内的其他终端设备，如第二终端设备之间的组内通信，还可以通过网络设备转发的方式完成，如通过网络设备转发组播信息，以避免终端设备组内通信中断。
示例性地，对于如图2A所示的切换场景，第一终端设备可以通过与目标网络设备和源网络设备与终端设备组内的其他终端设备交换组播信息。
示例性地，对于如图2B所示的移出场景，第一终端设备可以通过与源网络设备与终端设备组内的其他终端设备交换组播信息。
S403，第一终端设备根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。
S403的具体内容可以参考S303，此处不再赘述。
S404，第一终端设备回切至源BWP，并在源BWP上向第二终端设备发送第二切换指令。
鉴于第一终端设备仅支持单BWP模式，第一终端设备可以回切至源BWP，并在源BWP上向第二终端设备发送第二切换指令。
其中，第二切换指令用于指示第二终端设备从源BWP切换至目标BWP。
在一种可能的设计方法中，上述第二切换指令包括第一切换时间。其中，第一切换时间为第二终端设备从源BWP切换至目标BWP的时间。
需要说明的是，第一切换时间可以参考BWP切换方法一的S304中第二终端设备 启动目标BWP的启动时间相关的描述，此处不再赘述。
在一种可能的设计方法中，上述第二切换指令还可以包括目标BWP的配置信息。其中，目标BWP的配置信息可以参考S304中的相关描述，此处不再赘述。
需要说明的是，第一终端设备也可以不回切至源BWP，而是将第二切换指令上报给网络设备，并由网络设备向第二终端设备转发。
容易理解，除第二切换指令外，第一终端设备与终端设备组内其他终端设备之间的通信，也可以通过网络设备转发。因此，上述BWP切换方法二还可以包括如下步骤：
在第一终端设备从源BWP切换至目标BWP的过程中，第一终端设备通过网络设备与第二终端设备通信，如转发组播消息，以避免终端设备组内通信中断。
相应地，第二终端设备执行如下步骤：
第二终端设备在源BWP上接收第一终端设备发送的第二切换指令。
S405，第一终端设备再次从源BWP切换至目标BWP，并在目标BWP上与第二终端设备通信。
相应地，第二终端设备执行如下步骤：
第二终端设备从源BWP切换至目标BWP，并在目标BWP上与第二终端设备通信。
在一种可能的设计方法中，上述第一终端设备再次从源BWP切换至目标BWP，可以具体实现为：
第一终端设备在第二切换时间再次从源BWP切换至所述目标BWP。
可选地，第一切换时间与S404所述的第二切换时间之间的时间偏差小于时间偏差阈值，以便减少终端设备组在从源BWP切换至目标BWP过程中的通信中断时长，进一步提高终端设备组内通信的可靠性。容易理解，上述时间偏差阈值通常设置为一个较小值，如10毫秒、1个时隙等。
在本申请实施例中，上述终端设备组内任意两个终端设备的切换时间之间的时间偏差，均应该小于时间偏差阈值。
本申请提供的BWP切换方法二，第一终端设备能够在从源BWP切换至目标BWP完成目标BWP的测量后，若第一终端设备根据目标BWP的测量结果确定终端设备组需要从源BWP切换至目标BWP，则回切至源BWP向第二终端设备发送第二切换指令，指示第二终端设备从源BWP切换至目标BWP上与第二终端设备通信，可以有效降低在终端设备组在小区切换或进入无线网络覆盖区域或移出无线网络的覆盖区域的过程中，终端设备组内的不同终端设备切换至目标BWP的时间偏差较大所导致的终端设备组内通信中断时长，从而提高切换BWP期间终端设备组内通信的可靠性。
图5为本申请实施例提供的BWP切换方法三的流程示意图，可以应用于图1所示的无线通信系统中的源网络设备，以减少在如图2A-图2C所示的任一种场景下终端设备组内直接通信中断时长，能够提高终端设备组内直接通信的可靠性。其中，该终端设备组包括第一终端设备和第二终端设备。
需要说明的是，在图5所示的BWP切换方法三中，不需要限定终端设备组的BWP支持能力。例如，终端设备组中的全部终端设备可以均支持多BWP模式，也可以全 部终端设备仅支持单BWP模式，还可以一部分终端设备支持多BWP模式，另一部分终端设备仅支持单BWP模式，此处不作限定。
下面以源网络设备为例，详细说明本申请实施例提供的BWP切换方法三。
如图5所示，上述BWP切换方法三可以包括S501-S505：
S501，源网络设备接收第一终端设备上报的目标BWP的测量结果。
具体地，源网络设备通过Uu口，接收第一终端设备上报的目标BWP的测量结果。其中，目标BWP的测量结果可以参见S303和S403，此处不再赘述。
可选地，上述BWP切换方法还可以包括：源网络设备通过Uu口，向第一终端设备发送目标BWP的测量任务。
S502，源网络设备根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。
具体地，若源网络设备确定目标BWP的测量结果满足BWP切换条件，则源网络设备确定终端设备组需要从源BWP切换至目标BWP。其中，BWP切换条件可以参见S303，此处不再赘述。
S503，源网络设备向终端设备组发送第三切换指令。
其中，第三切换指令用于指示终端设备组从源BWP切换至目标BWP。
具体地，源网络设备通过Uu口，向终端设备组发送第三切换指令。
在一种可能的设计方法中，上述第三切换指令包括目标BWP的配置信息。其中，目标BWP的配置信息可以参考S303，此处不再赘述。
可选地，在终端设备组支持多BWP模式的情况下，上述第三切换指令还可以包括：终端设备组中每个终端设备各自对应的目标BWP的启动时间，以及断开在源BWP上直接通信的断开时间。其中，启动时间和断开时间可以分别参见S305和S306中的相关描述，此处不再赘述。
可选地，在终端设备组仅支持单BWP模式的情况下，上述第三切换指令还可以包括：第三切换时间和第四切换时间。
其中，第三切换时间用于第一终端设备再次从源BWP切换至目标BWP，第四切换时间用于第二终端设备从源BWP切换至目标BWP，且第三切换时间与第四切换时间之间的时间偏差小于时间偏差阈值。其中，第三切换时间和第四切换时间可以分别参见S405中第一切换时间和第二切换时间相关的描述，此处不再赘述。
第一终端设备和第二终端设备在接收到第三切换指令之后，可以执行S504：
S504，根据第三切换指令，切换至目标BWP。
S505，在目标BWP上通信。
本申请提供的BWP切换方法三，源网络设备能够根据第一终端设备上报的目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP，并向终端设备组中的每个终端设备下发第三切换指令，以便终端设备组中的每个终端根据第三切换指令从源BWP切换至目标BWP，并在目标BWP上重建终端设备组在侧行链路SL上的组内直接通信，可以避免或者有效减少终端设备组在小区切换或进入无线网络覆盖区域或移出无线网络的覆盖区域的过程中，终端设备组在侧行链路SL上的组内直接通信中断时长，从而提高切换BWP期间终端设备组内通信的可靠性。
以上结合图3-图5详细说明了本申请实施例提供的BWP切换方法。以下结合图6-图11详细说明本申请实施例的通信装置。
图6为本申请实施例提供的一种通信装置，用于执行上述方法实施例中终端设备组的第一终端设备的功能。其中，该终端设备组还包括第二终端设备，且该终端设备组支持多BWP模式。
如图6所示，通信装置600包括：第一通信模块601、第二通信模块602和控制模块603。
其中，第一通信模块601，用于在源BWP上与第二终端设备通信。
控制模块603，用于第一通信模块601在源BWP上与第二终端设备通信的同时，控制第二通信模块602测量目标BWP，以及根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。
第一通信模块601，还用于在源BWP上，向第二终端设备发送第一切换指令。其中，第一切换指令用于指示第二终端设备从源BWP切换至目标BWP。
第二通信模块602，用于在目标BWP上与第二终端设备通信。
在一种可能的设计中，上述第一切换指令包括目标BWP的配置信息。
可选地，上述第一切换指令还可以包括：第二终端设备启动目标BWP的启动时间。
进一步地，上述第一切换指令还可以包括：第二终端设备停止与第一终端设备在源BWP上通信的停止时间。
上述控制模块，还用于若目标BWP的测量结果满足BWP切换条件，则确定终端设备组需要从源BWP切换至目标BWP。
其中，BWP切换条件包括如下至少一项：目标BWP的信号强度高于BWP信号强度阈值；目标BWP的信号质量高于SL信号质量阈值；源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；源BWP上的空闲资源数量少于目标BWP上的空闲资源数量的连续时长大于第三时长阈值；源BWP上不存在优先级高于优先级阈值的业务。
在一种可能的设计中，在第一通信模块601和第二通信模块602分别在目标BWP上和源BWP上与第二终端设备通信之后，控制模块603，还用于控制第一通信模块601停止在源BWP上与第二终端设备通信。
在一种可能的设计中，如图7所示，上述通信装置600还可以包括：第三通信模块604。
其中，第三通信模块604，用于接收源网络设备或目标网络设备发送的目标BWP的测量任务。
相应地，控制模块603，还用于若第三通信模块604未检测到任何网络设备发送的无线信号，则控制第二通信模块602自行启动目标BWP的测量任务。
需要说明的是，通信装置600可以是终端设备，也可以是设置于该终端设备内部的芯片，本申请对此不做限定。
图8为本申请实施例提供的另一种通信装置，用于执行上述方法实施例中终端设 备组的第一终端设备的功能。其中，该终端设备组还包括第二终端设备，且该终端设备组仅支持单BWP模式。
如图8所示，通信装置800包括：第四通信模块801和控制模块802。
其中，第四通信模块801，用于在源BWP上与第二终端设备通信。
控制模块802，用于控制第四通信模块801从源BWP切换至目标BWP，测量目标BWP。
控制模块802，还用于根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。
控制模块802，还用于在控制第四通信模块801回切至源BWP，并在源BWP上向第二终端设备发送第二切换指令。其中，第二切换指令用于指示第二终端设备从源BWP切换至目标BWP。
控制模块802，还用于控制第四通信模块801再次从源BWP切换至目标BWP，并在目标BWP上与第二终端设备通信。
在一种可能的设计中，上述第二切换指令包括第一切换时间，第一切换时间为第二终端设备从源BWP切换至目标BWP的时间。相应地，控制模块802，还用于控制第四通信模块801在第二切换时间再次从源BWP切换至目标BWP。其中，第一切换时间与第二切换时间之间的时间偏差小于时间偏差阈值。
在一种可能的设计中，上述第二切换指令还包括目标BWP的配置信息。
在一种可能的设计中，如图9所示，上述通信装置800还包括：第五通信模块803。
其中，第五通信模块803，用于在控制模块802控制第四通信模块801测量目标BWP的过程中，通过网络设备与第二终端设备通信，以及在控制模块802控制第四通信模块801从源BWP切换至目标BWP的过程中，通过网络设备与第二终端设备通信。
可选地，上述第五通信模块803，还用于接收源网络设备或目标网络设备发送的目标BWP的测量任务。
可选地，控制模块802，还用于若第五通信模块803未检测到任何网络设备发送的无线信号，则控制第四通信模块801自行启动目标BWP的测量任务。
上述控制模块802，还用于若目标BWP的测量结果满足BWP切换条件，则确定终端设备组需要从源BWP切换至目标BWP。
其中，BWP切换条件包括如下至少一项：
目标BWP的信号强度高于BWP信号强度阈值；目标BWP的信号质量高于SL信号质量阈值；
源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；
目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；
源BWP上的空闲资源数量少于目标BWP上的空闲资源数量的连续时长大于第三时长阈值；
源BWP上不存在优先级高于优先级阈值的业务。
需要说明的是，通信装置800可以是终端设备，也可以是设置于该终端设备内部的芯片，本申请对此不做限定。
图10为本申请实施例提供的又一种通信装置，用于执行上述方法实施例中源网络 设备的功能。
如图10所示，通信装置1000包括：通信装置1000包括：第六通信模块1001和控制模块1002。
其中，第六通信模块1001，用于接收第一终端设备发送的目标BWP的测量结果。其中，第一终端设备属于终端设备组，终端设备组还包括第二终端设备。
控制模块1002，用于根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。
第六通信模块1001，还用于向终端设备组发送第三切换指令。其中，第三切换指令用于指示终端设备组从源BWP切换至目标BWP。
在一种可能的设计中，上述第三切换指令包括目标BWP的配置信息。
在一种可能的设计中，上述第三切换指令还可以包括：第三切换时间和第四切换时间。其中，第三切换时间用于第一终端设备再次从源BWP切换至目标BWP，第四切换时间用于第二终端设备从源BWP切换至目标BWP，且第三切换时间与第四切换时间之间的时间偏差小于时间偏差阈值。
可选地，上述第六通信模块1001，还用于向第一终端设备发送目标BWP的测量任务。
上述控制模块1002，还用于若目标BWP的测量结果满足BWP切换条件，则确定终端设备组需要从源BWP切换至目标BWP。
其中，BWP切换条件包括如下至少一项：
目标BWP的信号强度高于BWP信号强度阈值；
目标BWP的信号质量高于SL信号质量阈值；
源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；
目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；
源BWP上的空闲资源数量少于目标BWP上的空闲资源数量的连续时长大于第三时长阈值；
源BWP上不存在优先级高于优先级阈值的业务。
需要说明的是，通信装置1000可以是网络设备，也可以是设置于该网络设备内部的芯片，本申请对此不做限定。
进一步的，本申请涉及的方法还适用于单播场景，即终端设备组中仅有第一终端设备和第二终端设备的情况。具体的方法不再赘述。
图11为本申请实施例提供的又一种通信装置，可以适用于图1所示的无线通信系统。
如图11所示，通信装置1100包括：处理器1101和收发器1102。
其中，处理器1101与收发器1102和存储器1103耦合；存储器1103，用于存储计算机程序。
处理器1101，用于执行存储器1103中存储的计算机程序，使得通信装置1100执行如图3或图4所示的BWP切换方法中第一终端设备的功能。
示例性地，处理器1101与收发器1102和存储器1103耦合，可以是处理器1101可以通过总线1104与收发器1102和存储器1103连接。
一方面，在一种可能的设计中，通信装置1100包括一个或多个处理器和一个或多个收发器。所述一个或多个处理器被配置为支持通信装置1100执行上述BWP切换方法中终端设备相应的功能。例如，根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。所述收发器用于支持通信装置1100与其他设备通信，实现接收和/或发送功能。例如，在源BWP上和/或在目标BWP上与第二终端设备通信、接收源网络设备或目标网络设备下发的目标BWP的测量任务等。
可选的，通信装置1100还可以包括一个或多个存储器，所述存储器与处理器耦合，用于存储通信装置1100必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置，本申请对此不作限定。
通信装置1100可以为智能手机或者车载终端等，所述收发器可以是收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
通信装置1100还可以为通信芯片。所述收发器可以为该通信芯片的输入/输出电路或者接口。
在另一种可能的设计中，通信装置1100，包括收发器、处理器和存储器。该处理器用于控制收发器收发信号，该存储器用于存储计算机程序，该处理器用于运行该存储器中的计算机程序，使得通信装置1100执行如图3或图4所示的BWP切换方法中第一终端设备的功能。
另一方面，在一种可能的设计中，通信装置1100包括一个或多个处理器，以及一个或多个收发器。所述一个或多个处理器被配置为支持通信装置1100执行上述BWP切换方法中源网络设备完成的功能。例如，根据目标BWP的测量结果，确定终端设备组需要从源BWP切换至目标BWP。所述收发器1102用于支持通信装置1100与其他设备通信，实现接收和/或发送功能。例如，向第一终端设备下发目标BWP的测量任务，或者第三切换指令。
可选的，通信装置1100还可以包括一个或多个存储器，所述存储器与处理器耦合，用于存储通信装置1100必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置，本申请对此不作限定。
通信装置1100可以为网络设备，如gNB、eNB等，所述收发器可以是收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
通信装置1100还可以为通信芯片。所述收发器可以为该通信芯片的输入/输出电路或者接口。
本申请提供一种通信系统，其包括前述的一个或多个网络设备，以及多个终端设备。
本申请提供一种可读存储介质，存储有程序或指令，当程序或指令在计算机上运行时，使得计算机执行如图3或图4所示的BWP切换方法中终端设备的功能，或者图5所示的BWP切换方法中源网络设备的功能。
本申请提供一种计算机程序产品，包括计算机程序代码，当计算机程序代码在计算机上运行时，使得计算机如图3或图4所示的BWP切换方法中终端设备的功能，或者图5所示的BWP切换方法中源网络设备的功能。
应理解，在本申请实施例中的处理器可以是中央处理单元(central processing unit， CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DRRAM)。
上述实施例，可以全部或部分地通过软件、硬件(如电路)、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A、B可以是单数或者复数。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系，但也可能表示的是一种“和/或”的关系，具体可参考前后文进行理解。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a、b或c中的至少一项(个)，可以表示下述项之一：a；b；c；a和b；a和c；b和c；a、b和c，其中a、b、c可以是单个，也可以是多个。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺 序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (36)

  1. 一种BWP切换方法，其特征在于，适用于终端设备组中的第一终端设备；所述终端设备组还包括第二终端设备；所述终端设备组支持多BWP模式；
    所述BWP切换方法包括：
    所述第一终端设备在源BWP上与所述第二终端设备通信的同时，测量目标BWP；
    所述第一终端设备根据所述目标BWP的测量结果，确定所述终端设备组需要从所述源BWP切换至所述目标BWP；
    所述第一终端设备在所述源BWP上，向所述第二终端设备发送第一切换指令；其中，所述第一切换指令用于指示所述第二终端设备从所述源BWP切换至所述目标BWP；
    所述第一终端设备在所述目标BWP上和所述源BWP上与所述第二终端设备通信。
  2. 根据权利要求1所述的BWP切换方法，其特征在于，所述第一切换指令包括所述目标BWP的配置信息。
  3. 根据权利要求2所述的BWP切换方法，其特征在于，所述第一切换指令还包括：所述第二终端设备启动所述目标BWP的启动时间。
  4. 根据权利要求2或3所述的BWP切换方法，其特征在于，所述第一切换指令还包括：所述第二终端设备停止与所述第一终端设备在所述源BWP上通信的停止时间。
  5. 根据权利要求1-4中任一项所述的BWP切换方法，其特征在于，所述BWP切换方法还包括：
    所述第一终端设备停止在所述源BWP上与所述第二终端设备通信。
  6. 一种BWP切换方法，其特征在于，适用于终端设备组中的第一终端设备；所述终端设备组还包括第二终端设备；所述终端设备组仅支持单BWP模式；
    所述BWP切换方法包括：
    所述第一终端设备在源BWP上与所述第二终端设备通信；
    所述第一终端设备从所述源BWP切换至目标BWP，测量所述目标BWP；
    所述第一终端设备根据所述目标BWP的测量结果，确定所述终端设备组需要从所述源BWP切换至所述目标BWP；
    所述第一终端设备回切至所述源BWP，并在所述源BWP上向所述第二终端设备发送第二切换指令；其中，所述第二切换指令用于指示所述第二终端设备从所述源BWP切换至所述目标BWP；
    所述第一终端设备再次从所述源BWP切换至所述目标BWP，并在所述目标BWP上与所述第二终端设备通信。
  7. 根据权利要求6所述的BWP切换方法，其特征在于，所述第二切换指令包括第一切换时间，所述第一切换时间为所述第二终端设备从所述源BWP切换至所述目标BWP的时间；
    所述第一终端设备再次从所述源BWP切换至所述目标BWP，包括：
    所述第一终端设备在第二切换时间再次从所述源BWP切换至所述目标BWP；其中，所述第一切换时间与所述第二切换时间之间的时间偏差小于时间偏差阈值。
  8. 根据权利要求6或7所述的BWP切换方法，其特征在于，所述第二切换指令还包括所述目标BWP的配置信息。
  9. 根据权利要求6-8中任一项所述的BWP切换方法，其特征在于，所述BWP切换方法还包括如下至少一项：
    在所述第一终端设备测量所述目标BWP的过程中，所述第一终端设备通过网络设备与所述第二终端设备通信；
    在所述第一终端设备从所述源BWP切换至所述目标BWP的过程中，所述第一终端设备通过网络设备与所述第二终端设备通信。
  10. 根据权利要求1-9中任一项所述的BWP切换方法，其特征在于，所述BWP切换方法，还包括如下之一：
    所述第一终端设备接收源网络设备发送的所述目标BWP的测量任务；
    所述第一终端设备未检测到任何网络设备发送的无线信号，则自行启动所述目标BWP的测量任务；
    所述第一终端设备接收目标网络设备发送的所述目标BWP的测量任务。
  11. 根据权利要求1-10中任一项所述的BWP切换方法，其特征在于，所述根据所述目标BWP的测量结果，确定所述终端设备组需要从所述源BWP切换至所述目标BWP，包括：
    若所述目标BWP的测量结果满足BWP切换条件，则确定所述终端设备组需要从所述源BWP切换至所述目标BWP；其中，所述BWP切换条件包括如下至少一项：
    所述目标BWP的信号强度高于BWP信号强度阈值；
    所述目标BWP的信号质量高于SL信号质量阈值；
    所述源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；
    所述目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；
    所述源BWP上的空闲资源数量少于所述目标BWP上的空闲资源数量的连续时长大于第三时长阈值；
    所述源BWP上不存在优先级高于优先级阈值的业务。
  12. 一种BWP切换方法，其特征在于，适用于源网络设备；所述BWP切换方法包括：
    所述源网络设备接收第一终端设备发送的目标BWP的测量结果；其中，所述第一终端设备属于终端设备组，所述终端设备组还包括第二终端设备；
    所述源网络设备根据所述目标BWP的测量结果，确定所述终端设备组需要从源BWP切换至所述目标BWP；
    所述源网络设备向所述终端设备组发送第三切换指令；其中，所述第三切换指令用于指示所述终端设备组从所述源BWP切换至所述目标BWP。
  13. 根据权利要求12所述的BWP切换方法，其特征在于，所述第三切换指令包括所述目标BWP的配置信息。
  14. 根据权利要求13所述的BWP切换方法，其特征在于，所述第三切换指令还包括：第三切换时间和第四切换时间；其中，所述第三切换时间用于所述第一终端设 备再次从所述源BWP切换至所述目标BWP，所述第四切换时间用于所述第二终端设备从所述源BWP切换至所述目标BWP，且所述第三切换时间与所述第四切换时间之间的时间偏差小于时间偏差阈值。
  15. 根据权利要求12-14中任一项所述的BWP切换方法，其特征在于，所述BWP切换方法还包括：
    所述源网络设备向所述第一终端设备发送所述目标BWP的测量任务。
  16. 根据权利要求12-15中任一项所述的BWP切换方法，其特征在于，所述根据所述目标BWP的测量结果，确定所述终端设备组需要从源BWP切换至所述目标BWP，包括：
    若所述目标BWP的测量结果满足BWP切换条件，则确定所述终端设备组需要从所述源BWP切换至所述目标BWP；其中，所述BWP切换条件包括如下至少一项：
    所述目标BWP的信号强度高于BWP信号强度阈值；
    所述目标BWP的信号质量高于SL信号质量阈值；
    所述源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；
    所述目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；
    所述源BWP上的空闲资源数量少于所述目标BWP上的空闲资源数量的连续时长大于第三时长阈值；
    所述源BWP上不存在优先级高于优先级阈值的业务。
  17. 一种通信装置，其特征在于，适用于终端设备组中的第一终端设备；所述终端设备组还包括第二终端设备；所述终端设备组支持多BWP模式；
    所述通信装置包括：第一通信模块、第二通信模块和控制模块；其中，
    所述第一通信模块，用于在源BWP上与所述第二终端设备通信；
    所述控制模块，用于所述第一通信模块在源BWP上与所述第二终端设备通信的同时，控制所述第二通信模块测量目标BWP；
    所述控制模块，还用于根据所述目标BWP的测量结果，确定所述终端设备组需要从所述源BWP切换至所述目标BWP；
    所述第一通信模块，还用于在所述源BWP上，向所述第二终端设备发送第一切换指令；其中，所述第一切换指令用于指示所述第二终端设备从所述源BWP切换至所述目标BWP；
    所述第二通信模块，用于在所述目标BWP上与所述第二终端设备通信。
  18. 根据权利要求17所述的通信装置，其特征在于，所述第一切换指令包括所述目标BWP的配置信息。
  19. 根据权利要求18所述的通信装置，其特征在于，所述第一切换指令还包括：所述第二终端设备启动所述目标BWP的启动时间。
  20. 根据权利要求18或19所述的通信装置，其特征在于，所述第一切换指令还包括：所述第二终端设备停止与所述第一终端设备在所述源BWP上通信的停止时间。
  21. 根据权利要求17-20中任一项所述的通信装置，其特征在于，
    所述控制模块，还用于控制所述第一通信模块停止在所述源BWP上与所述第二 终端设备通信。
  22. 根据权利要求17-21中任一项所述的通信装置，其特征在于，所述通信装置还包括：第三通信模块；其中，
    所述第三通信模块，用于接收源网络设备发送的所述目标BWP的测量任务；
    所述控制模块，还用于若所述第三通信模块未检测到任何网络设备发送的无线信号，则控制所述第二通信模块自行启动所述目标BWP的测量任务；
    所述第三通信模块，还用于接收目标网络设备发送的所述目标BWP的测量任务。
  23. 一种通信装置，其特征在于，适用于终端设备组中的第一终端设备；所述终端设备组还包括第二终端设备；所述终端设备组仅支持单BWP模式；
    所述通信装置包括：第四通信模块和控制模块；其中，
    所述第四通信模块，用于在源BWP上与所述第二终端设备通信；
    所述控制模块，用于控制所述第四通信模块从所述源BWP切换至目标BWP，测量所述目标BWP；
    所述控制模块，还用于根据所述目标BWP的测量结果，确定所述终端设备组需要从所述源BWP切换至所述目标BWP；
    所述控制模块，还用于控制所述第四通信模块回切至所述源BWP，并在所述源BWP上向所述第二终端设备发送第二切换指令；其中，所述第二切换指令用于指示所述第二终端设备从所述源BWP切换至所述目标BWP；
    所述控制模块，还用于控制所述第四通信模块再次从所述源BWP切换至所述目标BWP，并在所述目标BWP上与所述第二终端设备通信。
  24. 根据权利要求23所述的通信装置，其特征在于，所述第二切换指令包括第一切换时间，所述第一切换时间为所述第二终端设备从所述源BWP切换至所述目标BWP的时间；
    所述控制模块，还用于控制所述第四通信模块在第二切换时间再次从所述源BWP切换至所述目标BWP；其中，所述第一切换时间与所述第二切换时间之间的时间偏差小于时间偏差阈值。
  25. 根据权利要求23或24所述的通信装置，其特征在于，所述第二切换指令还包括所述目标BWP的配置信息。
  26. 根据权利要求23-25中任一项所述的通信装置，其特征在于，所述通信装置还包括：第五通信模块：其中，
    所述第五通信模块，用于在所述控制模块控制所述第四通信模块测量所述目标BWP的过程中，通过网络设备与所述第二终端设备通信；
    所述第五通信模块，还用于在所述控制模块控制所述第四通信模块从所述源BWP切换至所述目标BWP的过程中，通过网络设备与所述第二终端设备通信。
  27. 根据权利要求26所述的通信装置，其特征在于，
    所述第五通信模块，还用于接收源网络设备发送的所述目标BWP的测量任务；
    所述控制模块，还用于若所述第五通信模块未检测到任何网络设备发送的无线信号，则控制所述第四通信模块自行启动所述目标BWP的测量任务；
    所述第五通信模块，还用于接收目标网络设备发送的所述目标BWP的测量任务。
  28. 根据权利要求17-27中任一项所述的通信装置，其特征在于，
    所述控制模块，还用于若所述目标BWP的测量结果满足BWP切换条件，则确定所述终端设备组需要从所述源BWP切换至所述目标BWP；其中，所述BWP切换条件包括如下至少一项：
    所述目标BWP的信号强度高于BWP信号强度阈值；
    所述目标BWP的信号质量高于SL信号质量阈值；
    所述源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；
    所述目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；
    所述源BWP上的空闲资源数量少于所述目标BWP上的空闲资源数量的连续时长大于第三时长阈值；
    所述源BWP上不存在优先级高于优先级阈值的业务。
  29. 一种通信装置，其特征在于，适用于源网络设备；所述通信装置包括：第六通信模块和控制模块；其中，
    所述第六通信模块，用于接收第一终端设备发送的目标BWP的测量结果；其中，所述第一终端设备属于终端设备组，所述终端设备组还包括第二终端设备；
    所述控制模块，用于根据所述目标BWP的测量结果，确定所述终端设备组需要从源BWP切换至所述目标BWP；
    所述第六通信模块，还用于向所述终端设备组发送第三切换指令；其中，所述第三切换指令用于指示所述终端设备组从所述源BWP切换至所述目标BWP。
  30. 根据权利要求29所述的通信装置，其特征在于，所述第三切换指令包括所述目标BWP的配置信息。
  31. 根据权利要求30所述的通信装置，其特征在于，所述第三切换指令还包括：第三切换时间和第四切换时间；其中，所述第三切换时间用于所述第一终端设备再次从所述源BWP切换至所述目标BWP，所述第四切换时间用于所述第二终端设备从所述源BWP切换至所述目标BWP，且所述第三切换时间与所述第四切换时间之间的时间偏差小于时间偏差阈值。
  32. 根据权利要求29-30中任一项所述的通信装置，其特征在于，
    所述第六通信模块，还用于向所述第一终端设备发送所述目标BWP的测量任务。
  33. 根据权利要求29-32中任一项所述的通信装置，其特征在于，
    所述控制模块，还用于若所述目标BWP的测量结果满足BWP切换条件，则确定所述终端设备组需要从所述源BWP切换至所述目标BWP；其中，所述BWP切换条件包括如下至少一项：
    所述目标BWP的信号强度高于BWP信号强度阈值；
    所述目标BWP的信号质量高于SL信号质量阈值；
    所述源BWP上的空闲资源占比高于第一占比阈值的连续时长大于第一时长阈值；
    所述目标BWP上的空闲资源占比低于第二占比阈值的连续时长大于第二时长阈值；
    所述源BWP上的空闲资源数量少于所述目标BWP上的空闲资源数量的连续时长 大于第三时长阈值；
    所述源BWP上不存在优先级高于优先级阈值的业务。
  34. 一种通信装置，其特征在于，包括：处理器和收发器，所述处理器与所述收发器和存储器耦合；
    所述存储器，用于存储计算机程序；
    所述处理器，用于执行所述存储器中存储的计算机程序，使得所述通信装置执行如权利要求1-16中任一项所述的BWP切换方法。
  35. 一种可读存储介质，其特征在于，存储有程序或指令，当所述程序或指令在计算机上运行时，使得所述计算机执行如权利要求1-16中任一项所述的BWP切换方法。
  36. 一种计算机程序产品，其特征在于，包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得所述计算机执行如权利要求1-16中任一项所述的BWP切换方法。
PCT/CN2020/072078 2019-02-11 2020-01-14 Bwp切换方法及通信装置 WO2020164355A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910110322.4 2019-02-11
CN201910110322.4A CN111556536B (zh) 2019-02-11 2019-02-11 Bwp切换方法及通信装置

Publications (1)

Publication Number Publication Date
WO2020164355A1 true WO2020164355A1 (zh) 2020-08-20

Family

ID=72005470

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/072078 WO2020164355A1 (zh) 2019-02-11 2020-01-14 Bwp切换方法及通信装置

Country Status (2)

Country Link
CN (1) CN111556536B (zh)
WO (1) WO2020164355A1 (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112601254A (zh) * 2020-12-15 2021-04-02 Oppo广东移动通信有限公司 一种切换bwp的方法及终端设备
CN113170292A (zh) * 2021-03-22 2021-07-23 北京小米移动软件有限公司 侧行链路的配置方法及装置、通信设备和存储介质
CN114205754A (zh) * 2020-09-17 2022-03-18 维沃移动通信有限公司 Bwp切换方法和终端
US20220174110A1 (en) * 2020-11-30 2022-06-02 EMC IP Holding Company LLC Method, electronic device, and computer program product for application migration
WO2022242360A1 (zh) * 2021-05-21 2022-11-24 Oppo广东移动通信有限公司 一种连接控制方法、终端及存储介质
WO2022252190A1 (zh) * 2021-06-03 2022-12-08 北京小米移动软件有限公司 一种直连带宽部分配置方法、装置及存储介质
WO2023125236A1 (zh) * 2021-12-28 2023-07-06 维沃移动通信有限公司 Bwp切换方法及装置、终端
WO2025065200A1 (en) * 2023-09-25 2025-04-03 Nokia Shanghai Bell Co., Ltd. Handover of subnetwork

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112637953B (zh) * 2020-12-15 2024-09-06 Oppo（重庆）智能科技有限公司 一种切换bwp的方法及终端设备
CN117837205A (zh) * 2021-11-26 2024-04-05 Oppo广东移动通信有限公司 侧链路通信方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160295624A1 (en) * 2015-04-02 2016-10-06 Samsung Electronics Co., Ltd Methods and apparatus for resource pool design for vehicular communications
WO2018121621A1 (en) * 2016-12-27 2018-07-05 Chou, Chie-Ming Method for signaling bandwidth part (bwp) indicators and radio communication equipment using the same
CN109314972A (zh) * 2018-09-21 2019-02-05 北京小米移动软件有限公司 带宽部分的切换触发方法及装置、信息配置方法及装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013181394A1 (en) * 2012-05-31 2013-12-05 Interdigital Patent Holdings, Inc. Device-to-device (d2d) link adaptation
CN104349402A (zh) * 2013-07-24 2015-02-11 中兴通讯股份有限公司 支持d2d技术的终端切换方法、通信节点、终端和系统
US11251921B2 (en) * 2017-07-21 2022-02-15 Lg Electronics Inc. Method for reporting channel state in wireless communication system, and apparatus therefor
WO2019022473A1 (ko) * 2017-07-28 2019-01-31 엘지전자 주식회사 무선 통신 시스템에서 bwp 동작을 수행하는 방법 및 이를 위한 장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160295624A1 (en) * 2015-04-02 2016-10-06 Samsung Electronics Co., Ltd Methods and apparatus for resource pool design for vehicular communications
WO2018121621A1 (en) * 2016-12-27 2018-07-05 Chou, Chie-Ming Method for signaling bandwidth part (bwp) indicators and radio communication equipment using the same
CN109314972A (zh) * 2018-09-21 2019-02-05 北京小米移动软件有限公司 带宽部分的切换触发方法及装置、信息配置方法及装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SPREADTRUM COMMUNICATIONS: "Discussion on Physical Layer Structure, R1-1813074", 3GPP TSG RAN WG1 MEETING #95, 16 November 2018 (2018-11-16), XP051555057, DOI: 20200330110545A *
ZTE ET AL.: "Discussion on Uu Based Resource Allocation/Configuration for NR V2X, R1-1813179", 3GPP TSG RAN WG1 MEETING #95, 16 November 2018 (2018-11-16), XP051555172, DOI: 20200330110904A *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114205754A (zh) * 2020-09-17 2022-03-18 维沃移动通信有限公司 Bwp切换方法和终端
CN114205754B (zh) * 2020-09-17 2023-09-22 维沃移动通信有限公司 Bwp切换方法和终端
US20220174110A1 (en) * 2020-11-30 2022-06-02 EMC IP Holding Company LLC Method, electronic device, and computer program product for application migration
US11588882B2 (en) * 2020-11-30 2023-02-21 EMC IP Holding Company LLC Method, electronic device, and computer program product for application migration
CN112601254A (zh) * 2020-12-15 2021-04-02 Oppo广东移动通信有限公司 一种切换bwp的方法及终端设备
CN113170292A (zh) * 2021-03-22 2021-07-23 北京小米移动软件有限公司 侧行链路的配置方法及装置、通信设备和存储介质
WO2022242360A1 (zh) * 2021-05-21 2022-11-24 Oppo广东移动通信有限公司 一种连接控制方法、终端及存储介质
WO2022252190A1 (zh) * 2021-06-03 2022-12-08 北京小米移动软件有限公司 一种直连带宽部分配置方法、装置及存储介质
WO2023125236A1 (zh) * 2021-12-28 2023-07-06 维沃移动通信有限公司 Bwp切换方法及装置、终端
WO2025065200A1 (en) * 2023-09-25 2025-04-03 Nokia Shanghai Bell Co., Ltd. Handover of subnetwork

Also Published As

Publication number Publication date
CN111556536B (zh) 2021-10-01
CN111556536A (zh) 2020-08-18

Similar Documents

Publication Publication Date Title
WO2020164355A1 (zh) Bwp切换方法及通信装置
KR102714036B1 (ko) 무선 통신 디바이스 및 무선 통신 방법
WO2020200135A1 (zh) 一种资源配置方法及通信装置
WO2019158038A1 (zh) 通信方法和通信装置
WO2016179835A1 (zh) 边链路信息传输方法、装置以及通信系统
JP2018514139A (ja) Ｄ２ｄ中継ノードの確定方法、使用方法及び装置
WO2020077577A1 (zh) 数据包传输方法和设备
WO2018170914A1 (zh) 一种系统信息传输方法及装置
WO2021003624A1 (zh) Bwp切换方法和终端设备
WO2016054962A1 (zh) 无线通信中切换接入点的方法、网络控制节点和用户设备
WO2021042310A1 (zh) 一种通信系统切换方法及通信装置
WO2019096285A1 (zh) 一种接入网络的控制方法和装置
WO2022021246A1 (zh) 基于条件的辅节点或主辅小区添加方法及设备
WO2019228459A1 (zh) 通信方法、装置及存储介质
CN109845363B (zh) 一种路径转换方法及相关设备
CN116114212B (zh) 一种辅助信息的配置方法及通信装置
WO2021243614A1 (zh) 信息处理方法及装置
WO2021226967A1 (zh) 切换的方法和设备
CN115604820B (zh) 用于定位的方法及装置
WO2024032271A1 (zh) 通信方法及装置
CN116669119A (zh) 用于小区切换的方法和装置
WO2023001172A1 (zh) 推荐比特率确定方法、装置及相关设备
WO2021102841A1 (zh) 一种基于网络切片的数据传输方法、装置和系统
WO2024032310A1 (zh) 通信方法和装置
US20230180046A1 (en) Sl and wlan interworking method and apparatus and communication device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20755804

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20755804

Country of ref document: EP

Kind code of ref document: A1