WO2023134684A1 - 小区重选方法、装置、设备、系统及存储介质 - Google Patents

小区重选方法、装置、设备、系统及存储介质 Download PDF

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Publication number
WO2023134684A1
WO2023134684A1 PCT/CN2023/071653 CN2023071653W WO2023134684A1 WO 2023134684 A1 WO2023134684 A1 WO 2023134684A1 CN 2023071653 W CN2023071653 W CN 2023071653W WO 2023134684 A1 WO2023134684 A1 WO 2023134684A1
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Prior art keywords
cell
reselection
vehicle
target
priority
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PCT/CN2023/071653
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English (en)
French (fr)
Inventor
刘进华
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维沃移动通信有限公司
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Publication of WO2023134684A1 publication Critical patent/WO2023134684A1/zh

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    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • 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
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application belongs to the technical field of communication, and specifically relates to a cell reselection method, device, equipment, system and storage medium.
  • the vehicle-mounted mobile cell that is, the cell provided by the vehicle-mounted mobile self-backhaul (Integrated Access Backhaul, IAB) node
  • the adjacent cell of the UE the cell provided by the fixed base station
  • the vehicle-mounted UE will reselect to an adjacent fixed cell with higher priority or better pilot signal quality (provided by the adjacent base station).
  • the vehicle-mounted UE will Will reselect back to the mobile cell.
  • the vehicle-mounted UE When the vehicle moves fast or the cell coverage area is small, the vehicle-mounted UE will frequently undergo cell reselection as the vehicle moves, which will cause the UE to perform unnecessary cell reselection, resulting in , the vehicle UE reselects to a fixed cell, when the vehicle moves away, the quality of the fixed cell deteriorates. If the UE has not established a connection at this time, it needs to reselect back to the mobile cell.
  • Frequent reselection will consume the power of the UE due to frequent measurements; if the UE has established a wireless connection with the fixed cell, it needs to switch back to For a certain cell, there is a risk of handover failure in this process, and in the case of a successful handover, there will also be output transmission interruption caused by the handover. Therefore, frequent cell reselection will lead to poor service quality for vehicle-mounted UEs.
  • the embodiment of the present application provides a cell reselection method, device, equipment, system and storage medium, which can solve the problem that the vehicle-mounted UE will frequently undergo cell reselection as the vehicle moves, causing the UE to perform unnecessary cell reselection, resulting in The problem of poor quality of service for vehicle-mounted UEs.
  • a cell reselection method includes: when the UE is in a vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE performs a target action; wherein the target action is any of the following: Determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform inter-frequency cell reselection according to the target priority; perform cell reselection based on the vehicle state-specific reselection offset; based on the vehicle state-specific reselection delay time Perform cell reselection.
  • a cell reselection device in a second aspect, includes: an acquisition module and an execution module.
  • the acquisition module is used to acquire the target action.
  • the execution module is used to execute the target action when the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell; wherein, the target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle mobile cell as the target priority, and perform inter-frequency cell reselection according to the target priority; perform cell reselection based on the vehicle-specific reselection offset; perform cell reselection based on the vehicle-specific reselection delay time.
  • a cell reselection method includes: a network side device sends configuration information to a UE, the configuration information is used to instruct the UE in the vehicle state to perform a target action; where the UE is in the vehicle state, and When the cell where the UE is located is a vehicle-mounted mobile cell, the UE performs the target action, and the target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform inter-frequency cell operation according to the target priority. Reselection; cell reselection is performed based on the vehicle state-specific reselection offset; cell reselection is performed based on the vehicle state-specific reselection delay time.
  • a cell reselection device in a fourth aspect, includes: a sending module.
  • the sending module is configured to send configuration information to the UE, and the configuration information is used to instruct the UE in the vehicle state to perform a target action; wherein, when the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE performs the target action , the target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform inter-frequency cell reselection according to the target priority; perform cell reselection based on the vehicle-mounted state-specific reselection offset selection; cell reselection is performed based on the dedicated reselection delay time of the vehicle state.
  • a UE includes a processor and a memory
  • the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the following steps are implemented: The steps of the method in one aspect.
  • a UE including a processor and a communication interface, wherein the processor is configured to execute a target action when the UE is in a vehicle state and the cell where the UE is located is a vehicle mobile cell; wherein the target action It is any of the following: determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform inter-frequency cell reselection according to the target priority; perform cell reselection based on the vehicle-mounted state-specific reselection offset; State-specific reselection delay time for cell reselection.
  • a network-side device in a seventh aspect, includes a processor and a memory, the memory stores programs or instructions that can run on the processor, and the programs or instructions are executed by the processor When realizing the steps of the method as described in the third aspect.
  • a network side device including a processor and a communication interface, wherein the communication interface is used to send configuration information to the UE, and the configuration information is used to instruct the UE in the vehicle state to perform a target action; wherein, When the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE performs a target action, and the target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle mobile cell as the target priority, and according to Target priority for inter-frequency cell reselection; cell reselection based on vehicle state-specific reselection offset; cell reselection based on vehicle state-specific reselection delay time.
  • a communication system including: a UE and a network side device, the UE can be used to perform the steps of the cell reselection method described in the first aspect, and the network side device can be used to perform the steps in the third aspect The steps of the cell reselection method described in the aspect.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method as described in the first aspect are implemented, or the The steps of the method described in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or an instruction to implement the method described in the first aspect. method, or implement the method as described in the third aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the The steps of the cell reselection method, or the steps of implementing the cell reselection method as described in the third aspect.
  • the UE when the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE may perform any of the following: determine the priority of the carrier frequency corresponding to the mobile cell as the target priority, and Perform inter-frequency cell reselection according to the target priority; perform cell reselection based on the vehicle-specific reselection offset; perform cell reselection based on the vehicle-specific reselection delay time.
  • the vehicle-mounted UE can adjust the priority of the frequency of the vehicle-mounted mobile cell to the target priority, or perform cell reselection based on the vehicle state-specific reselection offset, or based on the vehicle state Dedicated reselection delay time for cell reselection, instead of frequent cell reselection directly following the movement of the vehicle, reduces the probability of reselecting a vehicle-mounted UE residing in a vehicle-mounted mobile cell to a fixed cell, and avoids the Unnecessary cell reselection improves UE service quality.
  • FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the architecture of an IAB system provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a CU-DU structure of an IAB system provided by an embodiment of the present application
  • FIG. 4 is an example schematic diagram of a mobile IAB node providing wireless relay services for train passengers provided by an embodiment of the present application
  • FIG. 5 is one of the schematic diagrams of a cell reselection method provided by an embodiment of the present application.
  • FIG. 6 is the second schematic diagram of a cell reselection method provided by an embodiment of the present application.
  • FIG. 7 is one of the structural schematic diagrams of a cell reselection device provided by an embodiment of the present application.
  • FIG. 8 is the second structural schematic diagram of a cell reselection device provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a hardware structure of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a hardware structure of a UE provided in an embodiment of the present application.
  • FIG. 11 is one of the schematic diagrams of the hardware structure of a network-side device provided in an embodiment of the present application.
  • FIG. 12 is a second schematic diagram of a hardware structure of a network side device provided by an embodiment of the present application.
  • first, second and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and “second” distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technologies can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies.
  • NR New Radio
  • the following description describes the New Radio (NR) system for illustrative purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th generation (6 th Generation, 6G) communication system.
  • 6G 6th Generation
  • Fig. 1 shows a block diagram of a wireless communication system to which the embodiment of the present application is applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12 .
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, a super mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR) / virtual reality (virtual reality, VR) equipment, robot, wearable device (Wearable Device) , vehicle equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (personal computers, PCs), teller machines or self-service Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (
  • the network side device 12 may include an access network device or a core network device, where the access network device 12 may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function, or Wireless access network unit.
  • RAN Radio Access Network
  • RAN Radio Access Network
  • Wireless access network unit Wireless access network unit
  • the access network device 12 may include a base station, a WLAN access point, or a WiFi node, etc., and the base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (Base Transceiver Station, BTS), a radio Base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B, Home Evolved Node B, Transmitting Receiving Point (TRP) or all As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in this embodiment of the application, only the base station in the NR system is used as an example for introduction, and The specific type of the base station is not limited.
  • Core network equipment may include but not limited to at least one of the following: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (Policy Control Function, PCF), Policy and Charging Rules Function (PCRF), edge application service Discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration ( Centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management
  • FIG. 2 shows a schematic diagram of an IAB system.
  • An IAB node includes a distributed unit (Distributed Unit, DU) functional part and a mobile terminal (Mobile Termination, MT) functional part.
  • DU distributed Unit
  • MT Mobile Termination
  • an access point that is, IAB node
  • This wireless connection is called a wireless backhaul link (backhaul link).
  • backhaul link wireless backhaul link
  • a self-backhaul loop includes a donor IAB node (or called IAB donor), and the donor IAB node has a directly connected wired transmission network.
  • Fig. 3 is a CU-DU structural diagram of an IAB system.
  • the DUs of all IAB nodes are connected to a Centralized Unit (CU) node, and this node communicates through the F1-layer Application Protocol (F1-Application Protocol, F1-AP) signaling.
  • F1-Application Protocol F1-AP
  • the CU configures the MT through radio resource control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • the donor IAB node has no MT functional part.
  • the introduction of the IAB system is to solve the situation that the wired transmission network is not properly deployed when the access points are densely deployed. That is, when there is no wired transmission network, the access point can rely on wireless backhaul.
  • the mobile IAB node is a mobile self-backhaul relay base station, and the mobile IAB node is installed on vehicles (trains, buses, ships), etc. , may provide instant communication needs for passengers.
  • Mobile IAB nodes can be applied to provide wireless communication services for passengers in trains.
  • Figure 4 shows an example of mobile IAB nodes providing wireless relay services for train passengers.
  • the IAB node due to the high power and good antenna performance of the IAB node, it can provide passengers with huge relay bandwidth; on the other hand, the cell provided by the mobile IAB node moves with the passengers, and the UE of the passengers enjoys a good air interface channel and does not need to Frequent cell switching greatly improves the speed of passenger UEs and avoids service interruption caused by frequent cell switching.
  • Qrxlevmeas pilot signal received power measurement value (RSRP) of the cell
  • Qrxlevminoffset the offset relative to Qrxlevmin, used in the calculation of Srxlev
  • Pcompensation The power compensation value of the UE, determined according to the maximum transmit power of the UE.
  • Qoffsettemp Temporary offset applied to a cell, for example, when a UE connects to this cell, a connection failure occurs.
  • Qqualminoffset the offset relative to Qqualmin, used in the calculation of Squal
  • the UE can reselect to the better cell through the cell reselection procedure.
  • cell reselection including same-frequency cell reselection and inter-frequency cell reselection.
  • the UE For intra-frequency cell reselection, when the strength/quality of the pilot signal of the neighboring cell is higher than a preset offset of the current serving cell, and the time since the last cell reselection has exceeded 1 second, the UE will start from The current serving cell switches and reselects to the neighboring cell.
  • the UE For inter-frequency cell reselection with the same frequency priority, when the pilot signal quality of the current serving cell is lower than a preset threshold and the pilot signal quality of the inter-frequency adjacent cell is better than the signal quality of the current serving cell by a preset offset time, and the time since the last cell reselection has exceeded 1 second, the UE reselects to the inter-frequency neighboring cell.
  • the UE When the frequency priority of the UE's current serving cell is lower than that of inter-frequency neighboring cells, but the pilot signal quality of neighboring cells is higher than a preset threshold, and the time since the last cell reselection has exceeded 1 second , the UE reselects to an inter-frequency neighboring cell;
  • the pilot signal quality of neighboring cells is higher than a preset threshold, and the pilot quality of the current serving cell is lower than a preset threshold , and when the time since the last cell reselection has exceeded 1 second, the UE reselects to the inter-frequency neighboring cell.
  • the UE can sort and prioritize these candidate target cells according to the level of the above measurement. The higher the signal strength/quality, the higher the priority of the corresponding candidate target cell . The UE shall select the candidate target cell with the highest priority as the target cell.
  • the adjacent cell of the UE (the cell provided by the fixed base station) changes with the movement of the vehicle, and the vehicle-mounted UE will reselect the cell to the priority Adjacent fixed cells with high or better pilot signal quality (provided by adjacent base stations), when the vehicle moves away from the fixed cell, the vehicle-mounted UE will reselect to return to the mobile cell.
  • Adjacent fixed cells with high or better pilot signal quality (provided by adjacent base stations)
  • the vehicle-mounted UE will reselect to return to the mobile cell.
  • the vehicle-mounted mobile IAB node can improve the best experience for the vehicle-mounted UE. Frequent cell Reselection does not bring better experience to the vehicle UE, but reduces the experience.
  • the vehicle-mounted UE adjusts the frequency priority of the frequency of the vehicle-mounted mobile cell providing the service, for example, it is directly regarded as the highest priority or predetermined priority;
  • FIG. 5 shows a flow chart of a cell reselection provided in the embodiment of the present application.
  • the cell reselection method provided by the embodiment of the present application may include the following steps 201 and 202 .
  • step 201 the UE acquires a target action.
  • Step 202 when the UE is in a vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE executes a target action.
  • the above-mentioned target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform inter-frequency cell reselection according to the target priority; Cell reselection is performed based on the amount of movement; cell reselection is performed based on the dedicated reselection delay time of the vehicle state.
  • the UE in the vehicle state is hereinafter referred to as the vehicle UE for short.
  • the cell where the UE resides may be understood as: a cell that provides a camping service for the UE (ie, a serving cell) or a cell selected by the UE during the last cell selection (ie, a cell where the UE resides).
  • the above vehicle state-specific reselection offset may be understood as: a dedicated reselection offset shared by UEs in the vehicle state.
  • the foregoing dedicated reselection delay time in the vehicle state may be understood as: a dedicated reselection delay time shared by UEs in the vehicle state.
  • the foregoing target action is determined by any of the following: pre-configuration, protocol agreement, pre-definition, and network-side device configuration.
  • the UE can determine to perform a specific action in any of these ways, that is, the priority of adjusting the frequency of the vehicle mobile cell is Target priority, or cell reselection is performed based on the vehicle state-specific reselection offset, or cell reselection is performed based on the vehicle state-specific reselection delay time.
  • step 201 may specifically be implemented through the following steps 201a and 201b.
  • Step 201a the network side device sends configuration information to the UE.
  • the above configuration information is used to instruct the UE in the vehicle state to perform the target action.
  • the UE executes the target action.
  • the above-mentioned network-side device may be an access network device or a core network device, or the above-mentioned network-side device may be a vehicle-mounted mobile IAB node.
  • step 201b the UE receives the configuration information sent by the network side device.
  • the foregoing network side device is an access network device or a core network device.
  • the above-mentioned step 201a can be specifically realized by the following step 201a1
  • the above-mentioned step 201b can be specifically realized by the following step 201b1.
  • Step 201a1 the access network device/core network device sends a Non-Access Stratum (Non-Access Stratum, NAS) message to the UE.
  • NAS Non-Access Stratum
  • step 201b1 the UE receives the NAS message sent by the access network device/core network device.
  • the above NAS message includes configuration information, and the configuration information is used to instruct the UE to perform the target action.
  • the above-mentioned network side device is a vehicle-mounted mobile IAB node.
  • the above-mentioned step 201a can be specifically realized by the following step 201a2, and the above-mentioned step 201b can be specifically realized by the following step 201b2.
  • Step 201a2 the vehicle-mounted mobile IAB node sends a broadcast message to the UE.
  • step 201b2 the UE receives the broadcast message sent by the vehicle-mounted mobile IAB node.
  • the broadcast message (for example, a system message) includes configuration information, and the configuration information is used to instruct the UE to perform a target action.
  • the above configuration information includes at least one of the following: target priority, vehicle state-specific reselection offset, and vehicle state-specific reselection delay time.
  • At least one of the above-mentioned target priority, vehicle state-specific reselection offset, and vehicle state-specific reselection lag time is: pre-configured, agreed by agreement, predefined or determined by the network side Device Configuration.
  • the above-mentioned network side device is a vehicle-mounted mobile IAB node.
  • the above-mentioned step 201a can be specifically realized through the following step 201a3, and the above-mentioned step 201b can be specifically realized through the following step 201b3.
  • Step 201a3 the vehicle-mounted mobile IAB node sends a dedicated message to the UE.
  • step 201b3 the UE receives the dedicated message sent by the vehicle-mounted mobile IAB node.
  • the above-mentioned dedicated message (for example, dedicated RRC signaling) includes configuration information, and the configuration information is used to instruct the UE to perform the target action.
  • implementation manner 1 to implementation manner 3.
  • the above target action is to determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority.
  • the foregoing target priority may be the highest priority or a temporary priority.
  • step 202 may specifically be implemented through the following step 202a or step 202b.
  • Step 202a when the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE adjusts the priority of the carrier frequency corresponding to the vehicle mobile cell to the highest priority.
  • the target priority is determined by any of the following: pre-configuration, protocol agreement, pre-definition, and network-side device configuration.
  • the above-mentioned target priority may also be a specific priority, or a priority higher than the preset priority, or any priority, etc., which is not limited in this embodiment of the present application.
  • the vehicle-mounted UE can temporarily adjust the priority of the frequency of the current cell (that is, the vehicle-mounted mobile cell where the UE is located), that is, when the UE determines that the UE itself is in the vehicle-mounted state and the current serving cell is a vehicle-mounted mobile cell, the vehicle-mounted UE You can adjust the priority of the carrier frequency where the current cell is located:
  • the core network device When the UE initiates the registration process with the core network device, the core network device sends this configuration to the UE through a NAS message; or, the network side sends this configuration to the UE through the broadcast message of the vehicle-mounted mobile IAB node configuring the cell.
  • Step 202b when the UE is in a vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE adjusts the priority of the frequency where the vehicle mobile cell is located to a temporary priority.
  • the above-mentioned temporary priority is configured by dedicated signaling of the vehicle mobile cell, and the temporary priority is used for an inter-frequency cell reselection process when the UE camps on the vehicle mobile cell.
  • the vehicle-mounted mobile cell may configure the vehicle-mounted UE with the temporary priority value of the carrier frequency of the cell through dedicated signaling. For example, when the UE determines to camp on a mobile cell, the mobile cell initiates a tracking area update procedure (such as Track Area Update (Track Area Update, TAU) or RAN Area Update (RAN Area Update, RAU)) process through the mobile cell, the mobile cell Send the temporary priority value of the carrier frequency where the cell is located to the UE;
  • a tracking area update procedure such as Track Area Update (Track Area Update, TAU) or RAN Area Update (RAN Area Update, RAU)
  • the cell reselection method provided in the embodiment of the present application may further include the following step 203.
  • Step 203 when the UE meets the first condition, the UE determines the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell according to the pre-stored frequency priority or the frequency priority received from the searched cell.
  • the above-mentioned first condition includes at least one of the following: the UE camps on a fixed cell after cell reselection; the signal quality of the vehicle-mounted mobile cell is less than or equal to a preset threshold; link failure, wireless link re-establishment, or cell reselection.
  • the UE configures the frequency according to the pre-stored frequency priority parameters or the frequency priority received from the searched cell Determine the frequency priority of the cell where the UE is located:
  • the vehicle-mounted UE undergoes cell reselection and camps in a fixed cell
  • the signal quality of the vehicle-mounted mobile cell is less than or equal to a preset threshold, for example, the RSRP of the current mobile cell is lower than a preset threshold;
  • Wireless link failure, wireless link re-establishment or cell reselection occur between the vehicle-mounted UE and the vehicle-mounted mobile cell.
  • the vehicle-mounted UE when the UE camps on a vehicle-mounted mobile cell, the vehicle-mounted UE can adjust the priority of the frequency where the current cell is located, instead of frequent cell reselection as the vehicle moves, which reduces the frequency of staying in a vehicle-mounted mobile cell.
  • the probability that the vehicle-mounted UE of the cell reselects to a fixed cell avoids unnecessary cell reselection of the vehicle-mounted UE and improves the service quality of the UE.
  • the above target action is to perform cell reselection based on the vehicle state-specific reselection offset.
  • the above step 202 may specifically be implemented through the following step 202c.
  • Step 202c when the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell, if the pilot signal strength or pilot signal quality of the neighboring cell of the vehicle mobile cell is greater than or equal to the target threshold value, then the UE executes the neighboring cell. Cell reselection process.
  • the above-mentioned target threshold value is determined according to the vehicle state-specific reselection offset.
  • the above-mentioned target threshold value is the sum of the vehicle state-specific reselection offset and the preset threshold value.
  • the above-mentioned target threshold value is the sum of the first reselection offset, the additional offset dedicated to the vehicle state, and the preset threshold value, and the first reselection offset is the vehicle-mounted
  • the offset shared by UEs in the mobile cell, and the additional offset dedicated to the vehicle state is determined by any of the following: pre-configuration, protocol agreement, pre-definition, and network-side device configuration.
  • a new intra-frequency cell reselection offset suitable for vehicle-mounted UEs (that is, vehicle-specific reselection offsets), which is used for cell reselection of vehicle-mounted UEs residing in mobile cells select.
  • vehicle-specific reselection offsets the intra-frequency cell reselection offset suitable for vehicle-mounted UEs
  • the vehicle-mounted UE residing in the mobile cell determines that the pilot signal strength or pilot signal quality of the neighboring cell is higher than the target threshold (that is, the sum of the vehicle state-specific reselection offset and the preset threshold)
  • the vehicle-mounted The UE can reselect to the neighboring cell.
  • additional vehicle-specific offsets an additional intra-frequency cell reselection offset suitable for vehicle-mounted UEs.
  • the vehicle-mounted UE when the UE camps on a vehicle-mounted mobile cell, the vehicle-mounted UE can perform neighbor cell reselection based on the pilot signal strength or pilot signal quality of the neighboring cell of the vehicle-mounted mobile cell, and the vehicle state-specific reselection offset.
  • the reselection of the adjacent cell that is, the reselection to the adjacent cell is only when the adjacent cell meets certain conditions, rather than the frequent cell reselection directly following the movement of the vehicle, which reduces the reselection of the vehicle-mounted UE residing in the vehicle-mounted mobile cell.
  • the probability of fixing the cell avoids unnecessary cell reselection of the vehicle-mounted UE and improves the service quality of the UE.
  • the above target action is to perform cell reselection based on the dedicated reselection lag time of the vehicle state.
  • the above step 202 can be specifically implemented through the following step 202d.
  • Step 202d when the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell, if the interval between the time when the UE detects the candidate cell and the time of the last cell reselection is greater than or equal to the vehicle state dedicated reselection hysteresis time, the UE performs the reselection process of the candidate cell.
  • the delay time dedicated to vehicle state reselection is determined by any of the following: pre-configuration, protocol agreement, pre-definition, and network-side device configuration.
  • the above vehicle state-specific reselection delay time when configured by the network side device, it may be configured through NAS signaling, system message, or dedicated RRC signaling.
  • the protocol predefines a mobile cell reselection hysteresis time (that is, the vehicle state-specific reselection hysteresis time) or configures a mobile cell reselection hysteresis time, which is used for intra-frequency/inter-frequency cell reselection in the vehicle-mounted mobile cell.
  • a mobile cell reselection hysteresis time that is, the vehicle state-specific reselection hysteresis time
  • a mobile cell reselection hysteresis time which is used for intra-frequency/inter-frequency cell reselection in the vehicle-mounted mobile cell.
  • the vehicle-mounted UE performs cell reselection, it is necessary to ensure that the interval between two adjacent cell reselections is greater than the mobile cell reselection delay time (for example, X seconds).
  • X can be greater than 1 second. That is, when a suitable candidate cell is found
  • the vehicle-mounted UE when the UE camps on a vehicle-mounted mobile cell, the vehicle-mounted UE can perform reselection of adjacent cells based on the interval between two adjacent cell reselections and the vehicle state-specific reselection delay time, that is, in When a suitable candidate cell is found and meets certain conditions, the candidate cell is reselected, instead of frequently reselecting the cell directly with the movement of the vehicle, which reduces the reselection of the vehicle-mounted UE residing in the vehicle-mounted mobile cell to the fixed cell.
  • the probability of avoiding unnecessary cell reselection of the vehicle-mounted UE improves the service quality of the UE.
  • An embodiment of the present application provides a cell reselection method.
  • the UE may perform any of the following: determine the priority of the carrier frequency corresponding to the vehicle mobile cell as Target priority, and perform inter-frequency cell reselection according to the target priority; perform cell reselection based on the vehicle state-specific reselection offset; perform cell reselection based on the vehicle state-specific reselection delay time.
  • the vehicle-mounted UE can adjust the priority of the frequency of the vehicle-mounted mobile cell to the target priority, or perform cell reselection based on the vehicle state-specific reselection offset, or based on the vehicle state Dedicated reselection delay time for cell reselection, instead of frequent cell reselection directly following the movement of the vehicle, reduces the probability of reselecting a vehicle-mounted UE residing in a vehicle-mounted mobile cell to a fixed cell, and avoids the Unnecessary cell reselection improves UE service quality.
  • the execution subject may also be a cell reselection device, or a control module in the cell reselection device for executing the cell reselection method.
  • FIG. 7 shows a possible structural diagram of a cell reselection apparatus involved in the embodiment of the present application, which is applied to a UE.
  • the cell reselection apparatus 40 may include: an acquisition module 41 and an execution module 42 .
  • the acquisition module 41 is used to acquire the target action.
  • the execution module 42 is configured to perform a target action when the UE is in a vehicle state and the cell where the UE is located is a vehicle mobile cell; wherein, the target action is any of the following: determining the priority of the carrier frequency corresponding to the vehicle mobile cell is Target priority, and perform inter-frequency cell reselection according to the target priority; perform cell reselection based on the vehicle state-specific reselection offset; perform cell reselection based on the vehicle state-specific reselection delay time.
  • the embodiment of the present application provides a cell reselection device, which can adjust the priority of the frequency of the vehicle-mounted mobile cell to the target priority when the UE camps on the vehicle-mounted mobile cell, or perform cell reselection based on the vehicle-mounted state-specific reselection offset Cell reselection, or cell reselection based on the dedicated reselection delay time of the vehicle state, instead of frequent cell reselection directly following the movement of the vehicle, which reduces the probability of reselection to a fixed cell by a vehicle-mounted UE residing in a vehicle-mounted mobile cell , avoiding unnecessary cell reselection of the vehicle-mounted UE, and improving the service quality of the UE.
  • the above acquisition module 41 is specifically configured to perform at least one of the following:
  • NAS message sent by an access network device or a core network device, where the NAS message includes configuration information
  • the broadcast message sent by the vehicle-mounted mobile self-backhaul IAB node, the broadcast message includes configuration information
  • the proprietary message includes configuration information
  • the above configuration information is used to instruct the UE to execute the target action.
  • the above configuration information includes at least one of the following: target priority, vehicle state-specific reselection offset, and vehicle state-specific reselection delay time.
  • the above target priority is the highest priority.
  • the cell reselection apparatus 40 provided in the embodiment of the present application further includes: a determination module.
  • the determination module is configured to determine the carrier corresponding to the vehicle-mounted mobile cell according to the pre-stored frequency priority or the frequency priority received from the searched cell when the UE satisfies the first condition after the execution module 42 executes the target action Priority of frequency; wherein, the first condition includes at least one of the following: the UE camps on a fixed cell after cell reselection, the signal quality of the vehicle-mounted mobile cell is less than or equal to a preset threshold, and a wireless link occurs between the UE and the vehicle-mounted mobile cell link failure, wireless link re-establishment, or cell reselection.
  • the above target action is to perform cell reselection based on the vehicle state-specific reselection offset.
  • the above execution module 42 is specifically used to execute the reselection process of the adjacent cell when the quality of the pilot signal of the adjacent cell of the vehicle-mounted mobile cell is greater than or equal to the target threshold value. The offset is determined.
  • the above-mentioned target threshold value is the sum of the special reselection offset of the vehicle state and the preset threshold value; or, the above-mentioned target threshold value is the first reselection offset, the vehicle state
  • the sum of a dedicated additional offset and a preset threshold, the first reselection offset is an offset shared by UEs in the vehicle mobile cell.
  • the above target action is to perform cell reselection based on the dedicated reselection delay time of the vehicle state.
  • the above execution module 42 is specifically configured to execute the reselection process of the candidate cell when the interval between the time when the UE detects the candidate cell and the time of the last cell reselection is greater than or equal to the delay time dedicated to reselection in the vehicle state.
  • the cell reselection apparatus in this embodiment of the present application may be a UE, such as a UE with an operating system, or a component in the UE, such as an integrated circuit or a chip.
  • the UE may be a terminal, or other equipment other than the terminal.
  • the UE may include but not limited to the types of UE11 listed above, and other devices may be servers, Network Attached Storage (Network Attached Storage, NAS), etc., which are not specifically limited in this embodiment of the present application.
  • the cell reselection apparatus provided in the embodiment of the present application can realize each process implemented by the UE in the above method embodiment, and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • FIG. 8 shows another possible structural diagram of the cell reselection apparatus involved in the embodiment of the present application, which is applied to network side equipment.
  • the cell reselection apparatus 50 may include: a sending module 51 .
  • the sending module 51 is configured to send configuration information to the UE, and the configuration information is used to instruct the UE in the vehicle state to perform a target action; wherein, when the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE Execute the target action, the target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform inter-frequency cell reselection according to the target priority; special reselection offset based on the vehicle state Perform cell reselection; perform cell reselection based on the dedicated reselection delay time of the vehicle state.
  • An embodiment of the present application provides a cell reselection device.
  • the cell reselection device can send configuration information to the UE, so that when the UE camps on the vehicle-mounted mobile cell, the priority of the frequency where the vehicle-mounted mobile cell is located can be adjusted to the target priority. Either perform cell reselection based on the vehicle state-specific reselection offset, or perform cell reselection based on the vehicle state-specific reselection delay time, instead of frequent cell reselection directly following the movement of the vehicle, which reduces the time spent on parking.
  • the probability that the vehicle-mounted UE of the vehicle-mounted mobile cell reselects to a fixed cell avoids unnecessary cell reselection of the vehicle-mounted UE, and improves the service quality of the UE.
  • the above sending module is specifically configured to perform at least one of the following:
  • the broadcast message includes configuration information
  • the network side device is a vehicle-mounted mobile IAB node
  • the dedicated message includes configuration information
  • the network side device is a vehicle-mounted mobile IAB node.
  • the cell reselection device provided in the embodiment of the present application can implement the various processes implemented by the network side equipment in the above method embodiment, and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application further provides a communication device 5000, including a processor 5001 and a memory 5002, and the memory 5002 stores programs or instructions that can run on the processor 5001, for example , when the communication device 5000 is a UE, when the program or instruction is executed by the processor 5001, each step of the above UE-side method embodiment can be implemented, and the same technical effect can be achieved.
  • the communication device 5000 is a network-side device, when the program or instruction is executed by the processor 5001, each step of the above-mentioned network-side device method embodiment can be achieved, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a UE, including a processor and a communication interface, and the processor is used to execute a target action when the UE is in a vehicle state and the cell where the UE is located is a vehicle mobile cell; wherein, the target action is any of the following Item: Determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform inter-frequency cell reselection according to the target priority; perform cell reselection based on the dedicated reselection offset of the vehicle state; perform specific reselection based on the vehicle state Delay time for cell reselection.
  • FIG. 10 is a schematic diagram of a hardware structure of a UE implementing an embodiment of the present application.
  • the UE700 includes, but is not limited to: at least one of a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710. part parts.
  • the UE700 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 710 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. and other functions.
  • a power supply such as a battery
  • the UE structure shown in FIG. 10 does not constitute a limitation on the UE.
  • the UE may include more or less components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042, and the graphics processor 7041 is used by the image capture device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072 .
  • the touch panel 7071 is also called a touch screen.
  • the touch panel 7071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 7072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.
  • the radio frequency unit 701 may transmit the downlink data from the network side device to the processor 710 for processing after receiving the downlink data; in addition, the radio frequency unit 701 may send uplink data to the network side device.
  • the radio frequency unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the memory 709 can be used to store software programs or instructions as well as various data.
  • the memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playing function, image playback function, etc.), etc.
  • memory 709 may include volatile memory or nonvolatile memory, or, memory 709 may include both volatile and nonvolatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM erasable programmable read-only memory
  • Electrical EPROM Electrical EPROM
  • EEPROM electronically programmable Erase Programmable Read-Only Memory
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synch link DRAM , SLDRAM) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM , SLDRAM
  • Direct Memory Bus Random Access Memory Direct Rambus
  • the processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, wherein the application processor mainly handles operations related to the operating system, user interface, and application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 710 .
  • the processor 710 is configured to perform a target action when the UE is in a vehicle state and the cell where the UE is located is a vehicle mobile cell; where the target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle mobile cell The level is the target priority, and inter-frequency cell reselection is performed according to the target priority; cell reselection is performed based on the vehicle state-specific reselection offset; cell reselection is performed based on the vehicle state-specific reselection delay time.
  • An embodiment of the present application provides a UE.
  • the vehicle-mounted UE can adjust the priority of the frequency of the vehicle-mounted mobile cell to the target priority, or perform cell reselection based on the vehicle state-specific reselection offset. , or perform cell reselection based on the dedicated reselection delay time of the vehicle state, instead of frequent cell reselection directly following the movement of the vehicle, which reduces the probability of reselection to a fixed cell by a vehicle-mounted UE residing in a vehicle-mounted mobile cell. Unnecessary cell reselection of the vehicle-mounted UE is avoided, and the service quality of the UE is improved.
  • the UE provided in the embodiment of the present application can implement each process implemented by the UE in the foregoing method embodiment, and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is used to send configuration information to the UE, and the configuration information is used to instruct the UE in the vehicle state to perform the target action; wherein, the UE in the vehicle state state, and the cell where the UE is located is a vehicle-mounted mobile cell, the UE performs the target action, and the target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform the target action according to the target priority Inter-frequency cell reselection; cell reselection based on the vehicle-specific reselection offset; cell reselection based on the vehicle-specific reselection delay time.
  • the network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 600 includes: an antenna 61 , a radio frequency device 62 , a baseband device 63 , a processor 64 and a memory 65 .
  • the antenna 61 is connected to the radio frequency device 62 .
  • the radio frequency device 62 receives information through the antenna 61, and sends the received information to the baseband device 63 for processing.
  • the baseband device 63 processes the information to be sent and sends it to the radio frequency device 62
  • the radio frequency device 62 processes the received information and sends it out through the antenna 61 .
  • the method performed by the network side device in the above embodiments may be implemented in the baseband device 63, where the baseband device 63 includes a baseband processor.
  • the radio frequency device 62 is used to send configuration information to the UE, and the configuration information is used to instruct the UE in the vehicle state to perform a target action; wherein, when the UE is in the vehicle state and the cell where the UE is located is a vehicle mobile cell, the UE Execute the target action, the target action is any of the following: determine the priority of the carrier frequency corresponding to the vehicle-mounted mobile cell as the target priority, and perform inter-frequency cell reselection according to the target priority; special reselection offset based on the vehicle state Perform cell reselection; perform cell reselection based on the dedicated reselection delay time of the vehicle state.
  • An embodiment of the present application provides a network-side device.
  • the network-side device can send configuration information to the UE, so that when the UE camps on the vehicle-mounted mobile cell, the vehicle-mounted UE can adjust the priority of the frequency of the vehicle-mounted mobile cell to the target priority. Either perform cell reselection based on the vehicle state-specific reselection offset, or perform cell reselection based on the vehicle state-specific reselection delay time, instead of frequent cell reselection directly following the movement of the vehicle, which reduces the time spent on parking.
  • the probability that the vehicle-mounted UE of the vehicle-mounted mobile cell reselects to a fixed cell avoids unnecessary cell reselection of the vehicle-mounted UE, and improves the service quality of the UE.
  • the network-side device provided by the embodiment of the present application can implement the various processes implemented by the network-side device in the above method embodiments, and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the baseband device 63 can include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG.
  • the program executes the network device operations shown in the above method embodiments.
  • the network side device may also include a network interface 66, such as a common public radio interface (common public radio interface, CPRI).
  • a network interface 66 such as a common public radio interface (common public radio interface, CPRI).
  • the network-side device 600 in the embodiment of the present application further includes: instructions or programs stored in the memory 65 and operable on the processor 64, and the processor 64 calls the instructions or programs in the memory 65 to execute the various programs shown in FIG.
  • the method of module execution achieves the same technical effect, so in order to avoid repetition, it is not repeated here.
  • the embodiment of the present application also provides a network side device.
  • the network side device 1200 includes: a processor 1201 , a network interface 1202 and a memory 1203 .
  • the network interface 1202 is, for example, a general public wireless interface.
  • the network side device 1200 in the embodiment of the present application further includes: instructions or programs stored in the memory 1203 and executable on the processor 1201, and the processor 1201 calls the instructions or programs in the memory 1203 to execute the The method of module execution achieves the same technical effect, so in order to avoid repetition, it is not repeated here.
  • the embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, each process of the above-mentioned method embodiment is realized, and the same technology can be achieved. Effect, in order to avoid repetition, will not repeat them here.
  • the processor is the processor in the communication device described in the foregoing embodiments.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk, and the like.
  • the embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above method embodiments , and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • Embodiments of the present application further provide a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each of the above method embodiments. process, and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.
  • the embodiment of the present application also provides a communication system, including: a UE and a network side device, the UE can be used to perform the steps of the cell reselection method as described above, and the network side device can be used to perform the cell reselection method as described above Steps in the reselection method.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

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Abstract

本申请公开了一种小区重选方法、装置、设备、系统及存储介质，属于通信技术领域，本申请实施例的小区重选方法包括：在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作；其中，目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。

Description

小区重选方法、装置、设备、系统及存储介质
相关申请的交叉引用
本申请主张在2022年01月14日在中国提交的中国专利申请号202210045034.7的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种小区重选方法、装置、设备、系统及存储介质。
背景技术
当用户设备(User Equipment，UE)在车厢内驻留在车载移动小区(即车载移动自回传(Integrated Access Backhaul，IAB)节点提供的小区)时，UE的邻小区(固定基站提供的小区)随着车的移动而变化，车载UE会发生小区重选到优先级更高或导频信号质量更好的相邻固定小区(由相邻基站提供)，当车辆远离固定小区后，车载UE又会重选回到移动小区。当车辆移动速度较快或小区覆盖面积较小时，车载UE会随着车辆的移动而频繁发生小区重选，如此会导致UE进行非必要的小区重选，从而导致在伴随的移动小区的情况下，车载UE重选到一个固定小区的情况，当车辆移动远离时，所述固定小区质量变差。如果此时UE没有建立连接，就需要重选回移动小区，频繁重选会因为频繁的测量而消耗UE的功率；如果UE已经跟所述固定小区建立无线连接，则需要通过切换程序切换回到一定小区，这一过程会有切换失败的风险，且在切换成功的情况下，也会有切换导致的输出传输中断。因此，频繁发生小区重选会导致车载UE的服务质量较差。
发明内容
本申请实施例提供一种小区重选方法、装置、设备、系统及存储介质，能够解决车载UE会随着车辆的移动而频繁发生小区重选，导致UE进行非必要的小区重选，从而导致车载UE的服务质量较差的问题。
第一方面，提供了一种小区重选方法，该方法包括：在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作；其中，目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
第二方面，提供了一种小区重选装置，该装置包括：获取模块和执行模块。获取模块，用于获取目标动作。执行模块，用于在UE处于车载状态、且UE所在小区为车载移动小区的情况下，执行目标动作；其中，目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小 区重选。
第三方面，提供了一种小区重选方法，该方法包括：网络侧设备向UE发送配置信息，该配置信息用于指示处于车载状态的UE执行目标动作；其中，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作，该目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
第四方面，提供了一种小区重选装置，该装置包括：发送模块。发送模块，用于向UE发送配置信息，该配置信息用于指示处于车载状态的UE执行目标动作；其中，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作，该目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
第五方面，提供了一种UE，该UE包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面，提供了一种UE，包括处理器及通信接口，其中，所述处理器用于在UE处于车载状态、且UE所在小区为车载移动小区的情况下，执行目标动作；其中，目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
第七方面，提供了一种网络侧设备，该网络侧设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第八方面，提供了一种网络侧设备，包括处理器及通信接口，其中，所述通信接口用于向UE发送配置信息，该配置信息用于指示处于车载状态的UE执行目标动作；其中，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作，该目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
第九方面，提供了一种通信系统，包括：UE及网络侧设备，所述UE可用于执行如第一方面所述的小区重选方法的步骤，所述网络侧设备可用于执行如第三方面所述的小区重选方法的步骤。
第十方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第十一方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法，或实现如第三方面所述的方法。
第十二方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的小区重选方法的步骤，或者实现如第三方面所述的小区重选方法的步骤。
在本申请实施例中，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE可以执行以下任一项：确定载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。通过本方案，当UE驻留在车载移动小区时，车载UE可以调整车载移动小区所在频率的优先级为目标优先级，或基于车载状态专用重选偏移量进行小区重选，或基于车载状态专用重选迟滞时间进行小区重选，而并非直接随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选，改善了UE的服务质量。
附图说明
图1是本申请实施例提供的一种无线通信系统的架构示意图；
图2是本申请实施例提供的一种IAB系统的架构示意图；
图3是本申请实施例提供的一种IAB系统的CU-DU结构示意图；
图4是本申请实施例提供的一种移动IAB节点为列车乘客提供无线中继服务的示例示意图；
图5是本申请实施例提供的一种小区重选方法的示意图之一；
图6是本申请实施例提供的一种小区重选方法的示意图之二；
图7是本申请实施例提供的一种小区重选装置的结构示意图之一；
图8是本申请实施例提供的一种小区重选装置的结构示意图之二；
图9是本申请实施例提供的一种通信设备的硬件结构示意图；
图10是本申请实施例提供的一种UE的硬件结构示意图；
图11是本申请实施例提供的一种网络侧设备的硬件结构示意图之一；
图12是本申请实施例提供的一种网络侧设备的硬件结构示意图之二。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通 信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6 thGeneration，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。核心网设备可以包含但不限于如下至少一项：核心网节点、核心网功能、移动管理实体(Mobility Management Entity，MME)、接入移动管理功能(Access and Mobility Management Function，AMF)、会话管理功能(Session Management Function，SMF)、用户平面功能(User Plane Function，UPF)、策略控制功能(Policy Control Function，PCF)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)、边缘应用服务发现功能(Edge Application Server Discovery Function，EASDF)、统一数据管理(Unified Data Management，UDM)，统一数据仓储(Unified Data Repository，UDR)、归属用户服务器(Home Subscriber Server，HSS)、集中式网络配置(Centralized network configuration，CNC)、网络存储功能(Network Repository Function，NRF)，网络开放功能(Network Exposure Function，NEF)、本地NEF(Local NEF，或L-NEF)、 绑定支持功能(Binding Support Function，BSF)、应用功能(Application Function，AF)等。需要说明的是，在本申请实施例中仅以NR系统中的核心网设备为例进行介绍，并不限定核心网设备的具体类型。
下面对本申请实施例提供的小区重选方法、装置、通信设备、系统及存储介质中涉及的一些概念和/或术语做一下解释说明。
1、IAB系统
图2示出了一个IAB系统的示意图。一个IAB节点包括分布单元(Distributed Unit，DU)功能部分和移动终端(Mobile Termination，MT)功能部分。依靠MT，一个接入点(即IAB node)可以找到一个上游接入点(parent IAB node)，并跟上游接入点的DU建立无线连接，该无线连接被称为无线回传链路(backhaul link)。在一个IAB节点建立完整的回传链路后，该IAB节点打开其DU功能，DU会提供小区服务，即DU可以为UE提供接入服务。一个自回传回路包含一个归属(donor)IAB节点(或者称为IAB donor)，donor IAB节点有直接相连的有线传输网。
图3是一个IAB系统的CU-DU结构图。在一个自回传回路中，所有的IAB节点的DU都连接到一个集中单元(Centralized Unit，CU)节点，由这一个节点通过F1层应用协议(F1-Application Protocol，F1-AP)信令进行对DU的配置。CU通过无线资源控制(Radio Resource Control，RRC)信令进行对MT的配置。donor IAB节点没有MT功能部分。
IAB系统的引入是为了解决接入点密集部署时，有线传输网部署不到位的情况。即在没有有线传输网络时，接入点可以依赖无线回传。
2、移动IAB系统(mobile IAB system)
随着现代移动通信技术和交通技术的发展，人们对在乘坐交通工具的过程中的通信需求越来越强烈，比如，人们希望能够在乘坐高速交通工具时能够通过互联网进行办公、观看视频或者游戏等。为了适应这一需求，移动IAB(Integrated Access Backhaul)技术开始发展，移动IAB节点是一种可以移动的自回传中继基站，将移动IAB节点安装在交通工具(火车、巴士、轮船)等上面，可能为乘客提供即时通信需求。移动IAB节点可以应用于为车内乘客提供无线通信服务，图4示出了移动IAB节点为列车乘客提供无线中继服务的示例。一方面由于IAB节点的功率大，天线性能好，能够为乘客提供巨大的中继带宽；另一方面，移动IAB节点的提供的小区跟着乘客一起移动，乘客的UE享有良好的空口信道而且不用发生频繁的小区切换，极大地提升乘客UE的速率，避免了由于频繁小区切换带来的业务中断。
3、小区选择原则
小区选择的原则Srxlev>0和Squal>0
Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset)–Pcompensation-Qoffsettemp
Squal＝Qqualmeas–(Qqualmin+Qqualminoffset)-Qoffsettemp
上述S原则分别等效于：
Qrxlevmeas>＝(Qrxlevmin+Qrxlevminoffset)+Pcompensation+Qoffsettemp
Qqualmeas>＝(Qqualmin+Qqualminoffset)+Qoffsettemp
上述各参数的含义如下：
Srxlev：小区选择导频信号接收水平(dB)
Qrxlevmeas：小区的导频信号接收功率测量值(RSRP)；
Qrxlevmin：要求的最低接收功率水平(dBm)；
Qrxlevminoffset：相对于Qrxlevmin的偏移量，用在Srxlev的计算；
Pcompensation：UE的功率补偿值，根据UE的最大发送功率确定。
Qoffsettemp：对一个小区施加的临时偏移量，例如当UE连接到该小区时，发生了连接失败。
Squal：小区选择导频信号质量水平(dB)
Qqualmeas：小区的导频信号接质量测量值(RSRQ)；
Qqualmin：要求的最低接收功率水平(dBm)；
Qqualminoffset：相对于Qqualmin的偏移量，用在Squal的计算；
4、小区重选原则
当出现更好的小区可以为UE提供服务时，UE可以通过小区重选程序，重选到更好的小区。小区重选有多种情况，有同频小区重选和异频小区重选。
对于同频小区重选来说，当邻小区导频信号强度/质量高于当前服务小区一个预设的偏移量时、且距离上次小区重选的时间已经超过1秒时，UE会从当前服务小区切重选到该邻小区。
对于频率优先级相同的异频小区重选，当当前服务小区的导频信号质量低于一个预设门限且异频邻小区的导频信号质量比当前服务小区的信号质量好一个预设偏移时、且距离上次小区重选的时间已经超过1秒时，UE重选到该异频邻小区。
对于异频不同频率优先级的异频小区重选，有两种情形：
当UE的当前服务小区的频率优先级低于异频邻小区的频率优先级、而邻小区的导频信号质量高于一个预设门限时、且距离上次小区重选的时间已经超过1秒时，UE重选到异频邻小区；
当UE的当前服务小区的频率优先级高于异频邻小区的频率优先级、邻小区的导频信号质量高于一个预设门限时，当前服务小区的导频质量低于一个预设门限时、且距离上次小区重选的时间已经超过1秒时，UE重选到该异频邻小区。
当有多个邻小区满足作为目标小区的条件时，UE可以根据上述测量量的高低对这些候选目标小区进行排序优先级排序，信号强度/质量越高，对应的候选目标小区的优先级越高。UE应该选取优先级最高的候选目标小区作为目标小区。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的小区重选方法进行详细地说明。
当UE在车厢内驻留在车载移动小区(由车载移动IAB节点)时，UE的邻小区(固定基站提供的小区)随着车的移动而变化，车载UE会发生小区重选到优先级更高或导频信号质量更好的相邻固定小区(由相邻基站提供)，当车辆远离固定小区后，车载UE又会重选回到移动小区。当车辆移动速度较快和或小区覆盖面积较小时，车载UE会随着车辆的移动而频繁发生小区重选，而实际上能给车载UE提高最好体验的时车载移动IAB节点，频繁的小区重选没有为车载UE带来更好的体验，反而带来体验降低。
本申请的方案中，对于驻留在车载移动小区的UE：
(1)对于异频小区重选：车载UE对提供服务的车载移动小区所在频率进行频率优先级调整，例如直接视为最高优先级或预定优先级；
(2)对于同频小区重选：引入一个适用于车载UE的专门的新偏移值(即车载状态专用重选偏移量)，当邻小区的导频质量测量值高于当前小区的测量值该偏移值(正值)时，才能重选到相邻固定小区；
(3)对于同频或异频小区重选：引入专门的从移动小区重选到固定小区的小区重选迟滞参数(即车载状态专用重选迟滞时间)，使得相邻两次小区重选之间的时间增长(现有固定为1秒)，以降低UE重选到相邻固定小区的频度。
本申请实施例提供一种小区重选方法，图5示出了本申请实施例提供的一种小区重选的流程图。如图5所示，本申请实施例提供的小区重选方法可以包括下述的步骤201和步骤202。
步骤201、UE获取目标动作。
步骤202、在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作。
本申请实施例中，上述目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
需要说明的是，处于车载状态的UE以下简称为车载UE。
UE所在小区可以理解为：为UE提供驻留服务的小区(即服务小区)或UE最近一次小区选择时所选择的小区(即UE所驻留的小区)。
上述车载状态专用重选偏移量可以理解为：对处于车载状态的UE共享的专用重选偏移量。
上述车载状态专用重选迟滞时间可以理解为：对处于车载状态的UE共享的专用重选迟滞时间。
可选地，本申请实施例中，上述目标动作由以下任一项确定：预配置、协议约定、预定义、网络侧设备配置。
可以理解，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE可以通过这些方式中的任一种，确定执行具体的一个动作，即调整车载移动小区所在频率的优先级为目标优先级，或者基于车载状态专用重选偏移量进行小区重选，或者基于车载状态专用重选迟滞时间进行小区重选。
可选地，本申请实施例中，结合图5，如图6所示，上述步骤201具体可以通过下述的步骤201a和步骤201b实现。
步骤201a、网络侧设备向UE发送配置信息。
本申请实施例中，上述配置信息用于指示处于车载状态的UE执行目标动作。其中，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作。
本申请实施例中，上述网络侧设备可以为接入网设备或核心网设备，或者上述网络侧设备可以为车载移动IAB节点。
步骤201b、UE接收网络侧设备发送的配置信息。
可选地，本申请实施例中，上述网络侧设备为接入网设备或核心网设备。上述步骤201a具体可以通过下述的步骤201a1实现，并且上述步骤201b具体可以通过下述的步骤201b1实现。
步骤201a1、接入网设备/核心网设备向UE发送非接入层(Non-Access Stratum，NAS)消息。
步骤201b1、UE接收接入网设备/核心网设备发送的NAS消息。
本申请实施例中，上述NAS消息中包括配置信息，该配置信息用于指示UE执行目标动作。
可选地，本申请实施例中，上述网络侧设备为车载移动IAB节点。上述步骤201a具体可以通过下述的步骤201a2实现，并且上述步骤201b具体可以通过下述的步骤201b2实现。
步骤201a2、车载移动IAB节点向UE发送广播消息。
步骤201b2、UE接收车载移动IAB节点发送的广播消息。
本申请实施例中，上述广播消息(例如系统消息)中包括配置信息，该配置信息用于指示UE执行目标动作。
可选地，本申请实施例中，上述配置信息中包括以下至少一项：目标优先级、车载状态专用重选偏移量和车载状态专用重选迟滞时间。
可选地，本申请实施例中，上述目标优先级、车载状态专用重选偏移量和车载状态专用重选迟滞时间中的至少一项为：预配置、协议约定、预定义或由网络侧设备配置。
可选地，本申请实施例中，上述网络侧设备为车载移动IAB节点。上述步骤201a具体可以通过下述的步骤201a3实现，并且上述步骤201b具体可以通过下述的步骤201b3实现。
步骤201a3、车载移动IAB节点向UE发送专有消息。
步骤201b3、UE接收车载移动IAB节点发送的专有消息。
本申请实施例中，上述专有消息(例如专有RRC信令)中包括配置信息，该配置信息用于指示UE执行目标动作。
下面通过三个实施方式(即实施方式一至实施方式三)对UE执行目标动作的具体方案进行描述。
可选地，在本申请的实施方式一中，上述目标动作为确定车载移动小区对应的载波频率的优先级为目标优先级。
可选地，本申请实施例中，上述目标优先级可以为最高优先级或临时优先级。
上述步骤202具体可以通过下述的步骤202a或步骤202b实现。
步骤202a、在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE将车载移动小区对应的载波频率的优先级调整为最高优先级。
本申请实施例中，上述目标优先级由以下任一项确定：预配置、协议约定、预定义、网络侧设备配置。
可选地，本申请实施例中，上述目标优先级还可以为特定优先级，或高于预设优 先级的优先级，或任一优先级等，本申请实施例不做限制。
本实施方式一中，车载UE可以临时调整当前小区(即UE所在的车载移动小区)的所在频率的优先级，即当UE确定UE本身为车载状态，当前服务小区为车载移动小区时，车载UE可以调整当前小区所在载波频率的优先级：
(1)网络侧预配置或者协议预定义在UE为车载状态下，且当前服务小区为车载移动小区时，将当前服务小区所在载波频率临时设置为最高优先级，该频率优先级适用于该车载移动小区；
(2)当网络侧通过预配置消息配置(即上述实施例所述的配置信息，此处配置信息用于指示UE调整车载移动小区所在频率的优先级为最高优先级)时：
在UE发起向核心网设备的注册流程中，由核心网设备将此配置通过NAS消息发送给UE；或者，网络侧通过车载移动IAB节点配置本小区的广播消息将此配置发送给UE。
步骤202b、在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE将车载移动小区所在频率的优先级调整为临时优先级。
本申请实施例中，上述临时优先级由车载移动小区的专有信令配置，该临时优先级用于UE驻留在车载移动小区时的异频小区重选过程。
本申请实施例中，车载移动小区可以通过专有信令，给车载UE配置本小区所在载波频率的临时优先级值。例如，当UE确定驻留在一个移动小区，通过该移动小区发起跟踪区域更新程序(例如跟踪区域更新(Track Area Update，TAU)或RAN区域更新(RAN Area Update，RAU))过程中，移动小区将本小区所在载波频率的临时优先级值发送给UE；
可选地，本申请实施例中，在上述步骤202之后，本申请实施例提供的小区重选方法还可以包括下述的步骤203。
步骤203、在UE满足第一条件的情况下，UE根据预存的频率优先级或者从搜索到的小区接收到的频率优先级，确定车载移动小区对应的载波频率的优先级。
本申请实施例中，上述第一条件包括以下至少一项：UE经过小区重选驻留到固定小区、车载移动小区的信号质量小于或等于预设阈值、UE与车载移动小区之间发生无线链路失败、无线链路重建或重选小区。
可以理解，当发生以下至少一种情况时，上述在移动小区确定的移动小区所在频率的临时频率优先级失效，UE根据预存的频率优先级参数或者从搜索到的小区接收到的频率优先级配置确定UE所在小区的频率优先级：
(1)车载UE经过小区重选、驻留到固定小区；
(2)车载移动小区的信号质量小于或等于预设阈值，例如当前移动小区的RSRP低于一个预设门限；
(3)车载UE跟车载移动小区之间发生无线链路失败、无线链路重建或重选小区等。
本申请实施例中，当UE驻留在车载移动小区时，车载UE可以调整当前小区所在频率的优先级，而并非随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选， 改善了UE的服务质量。
可选地，在本申请的实施方式二中，上述目标动作为基于车载状态专用重选偏移量进行小区重选。上述步骤202具体可以通过下述的步骤202c实现。
步骤202c、在UE处于车载状态、且UE所在小区为车载移动小区的情况下，若车载移动小区的邻小区的导频信号强度或导频信号质量大于或等于目标门限值，则UE执行邻小区的重选过程。
本申请实施例中，上述目标门限值根据车载状态专用重选偏移量确定。
可选地，本申请实施例中，上述目标门限值为车载状态专用重选偏移量和预设门限值之和。
可选地，本申请实施例中，上述目标门限值为第一重选偏移量、车载状态专用附加偏移量和预设门限值之和，该第一重选偏移量为车载移动小区中的UE共用的偏移量，该车载状态专用附加偏移量由以下任一项确定：预配置、协议约定、预定义、网络侧设备配置。
本实施方式二中，即同频小区重选方案：
(1)引入一个新适用于车载UE的同频小区重选偏移量(即车载状态专用重选偏移量)，该重选偏移量用于驻留在移动小区的车载UE进行小区重选。当驻留在移动小区的车载UE确定邻小区的导频信号强度或导频信号质量高于目标门限值(即车载状态专用重选偏移量和预设门限值之和)时，车载UE可以重选到该邻小区。
(2)引入一个附加的适用于车载UE的同频小区重选偏移量(称为车载状态专用附加偏移量)，当驻留在移动小区的车载UE进行小区重选时，如果邻小区的导频信号强度或导频信号质量高于目标门限值(即第一重选偏移量、车载状态专用附加偏移量和预设门限值之和)时，车载UE可以重选到该邻小区。
本申请实施例中，当UE驻留在车载移动小区时，车载UE可以基于车载移动小区的邻小区的导频信号强度或导频信号质量，以及车载状态专用重选偏移量，执行邻小区的重选，即在邻小区满足一定条件时才重选到该邻小区，而并非直接随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选，改善了UE的服务质量。
可选地，在本申请的实施方式三中，上述目标动作为基于车载状态专用重选迟滞时间进行小区重选。上述步骤202具体可以通过下述的步骤202d实现。
步骤202d、在UE处于车载状态、且UE所在小区为车载移动小区的情况下，若UE检测到候选小区的时间与上次小区重选的时间之间的间隔大于或等于车载状态专用重选迟滞时间，则UE执行候选小区的重选过程。
本申请实施例中，上述车载状态专用重选迟滞时间由以下任一项确定：预配置、协议约定、预定义、网络侧设备配置。
可选地，本申请实施例中，上述车载状态专用重选迟滞时间由网络侧设备配置时，可以通过NAS信令、系统消息或专有RRC信令等进行配置。
本实施方式三中，即迟滞小区重选方案：
协议预定义一个移动小区重选迟滞时间(即车载状态专用重选迟滞时间)或者配置一个移动小区重选迟滞时间，用于驻留在车载移动小区的同频/异频小区重选。例如， 当车载UE的小区重选时，需保证相邻的两次小区重选之间的间隔大于移动小区重选迟滞时间(例如X秒)。作为一个例子，X可以大于1秒。即当找到合适的候选小区、且距离上次小区重选的时间间隔超过X秒时，才能重选到该候选小区。
本申请实施例中，当UE驻留在车载移动小区时，车载UE可以基于相邻的两次小区重选之间的间隔以及车载状态专用重选迟滞时间，执行邻小区的重选，即在找到的合适的候选小区满足一定条件时才重选到该候选小区，而并非直接随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选，改善了UE的服务质量。
本申请实施例提供一种小区重选方法，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE可以执行以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。通过本方案，当UE驻留在车载移动小区时，车载UE可以调整车载移动小区所在频率的优先级为目标优先级，或基于车载状态专用重选偏移量进行小区重选，或基于车载状态专用重选迟滞时间进行小区重选，而并非直接随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选，改善了UE的服务质量。
需要说明的是，本申请实施例提供的小区重选方法，执行主体还可以为小区重选装置，或者，该小区重选装置中用于执行小区重选方法的控制模块。
图7示出了本申请实施例中涉及的小区重选装置的一种可能的结构示意图，应用于UE。如图7所示，小区重选装置40可以包括：获取模块41和执行模块42。
其中，获取模块41，用于获取目标动作。执行模块42，用于在UE处于车载状态、且UE所在小区为车载移动小区的情况下，执行目标动作；其中，目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
本申请实施例提供一种小区重选装置，当UE驻留在车载移动小区时，可以调整车载移动小区所在频率的优先级为目标优先级，或基于车载状态专用重选偏移量进行小区重选，或基于车载状态专用重选迟滞时间进行小区重选，而并非直接随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选，改善了UE的服务质量。
在一种可能的实现方式中，上述获取模块41，具体用于执行以下至少一项：
接收接入网设备或核心网设备发送的NAS消息，该NAS消息中包括配置信息；
接收车载移动自回传IAB节点发送的广播消息，该广播消息中包括配置信息；
接收车载移动IAB节点发送的专有消息，该专有消息中包括配置信息；
其中，上述配置信息用于指示UE执行目标动作。
在一种可能的实现方式中，上述配置信息中包括以下至少一项：目标优先级、车载状态专用重选偏移量和车载状态专用重选迟滞时间。
在一种可能的实现方式中，上述目标优先级为最高优先级。
在一种可能的实现方式中，本申请实施例提供的小区重选装置40还包括：确定模块。确定模块，用于在执行模块42执行目标动作之后，在UE满足第一条件的情况下，根据预存的频率优先级或者从搜索到的小区接收到的频率优先级，确定车载移动小区对应的载波频率的优先级；其中，第一条件包括以下至少一项：UE经过小区重选驻留到固定小区、车载移动小区的信号质量小于或等于预设阈值、UE与车载移动小区之间发生无线链路失败、无线链路重建或重选小区。
在一种可能的实现方式中，上述目标动作为基于车载状态专用重选偏移量进行小区重选。上述执行模块42，具体用于在车载移动小区的邻小区的导频信号质量大于或等于目标门限值的情况下，执行邻小区的重选过程，该目标门限值根据车载状态专用重选偏移量确定。
在一种可能的实现方式中，上述目标门限值为车载状态专用重选偏移量和预设门限值之和；或者，上述目标门限值为第一重选偏移量、车载状态专用附加偏移量和预设门限值之和，该第一重选偏移量为车载移动小区中的UE共用的偏移量。
在一种可能的实现方式中，上述目标动作为基于车载状态专用重选迟滞时间进行小区重选。上述执行模块42，具体用于在UE检测到候选小区的时间与上次小区重选的时间之间的间隔大于或等于车载状态专用重选迟滞时间的情况下，执行候选小区的重选过程。
本申请实施例中的小区重选装置可以是UE，例如具有操作系统的UE，也可以是UE中的部件，例如集成电路或芯片。该UE可以是终端，也可以为除终端之外的其他设备。示例性的，UE可以包括但不限于上述所列举的UE11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的小区重选装置能够实现上述方法实施例中UE实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
图8示出了本申请实施例中涉及的小区重选装置的另一种可能的结构示意图，应用于网络侧设备。如图8所示，小区重选装置50可以包括：发送模块51。
其中，发送模块51，用于向UE发送配置信息，该配置信息用于指示处于车载状态的UE执行目标动作；其中，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作，该目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
本申请实施例提供一种小区重选装置，小区重选装置可以向UE发送配置信息，以使得当UE驻留在车载移动小区时，可以调整车载移动小区所在频率的优先级为目标优先级，或基于车载状态专用重选偏移量进行小区重选，或基于车载状态专用重选迟滞时间进行小区重选，而并非直接随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选，改善了UE的服务质量。
在一种可能的实现方式中，上述发送模块，具体用于执行以下至少一项：
发送NAS消息，该NAS消息中包括配置信息，网络侧设备为接入网设备或核心 网设备；
向UE发送广播消息，该广播消息中包括配置信息，网络侧设备为车载移动IAB节点；
向UE发送专有消息，该专有消息中包括配置信息，网络侧设备为车载移动IAB节点。
本申请实施例提供的小区重选装置能够实现上述方法实施例中网络侧设备实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选地，如图9所示，本申请实施例还提供一种通信设备5000，包括处理器5001和存储器5002，存储器5002上存储有可在所述处理器5001上运行的程序或指令，例如，该通信设备5000为UE时，该程序或指令被处理器5001执行时实现上述UE侧方法实施例的各个步骤，且能达到相同的技术效果。该通信设备5000为网络侧设备时，该程序或指令被处理器5001执行时实现上述网络侧设备方法实施例的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种UE，包括处理器和通信接口，处理器用于在UE处于车载状态、且UE所在小区为车载移动小区的情况下，执行目标动作；其中，目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。该UE实施例与上述UE侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该UE实施例中，且能达到相同的技术效果。具体地，图10为实现本申请实施例的一种UE的硬件结构示意图。
该UE700包括但不限于：射频单元701、网络模块702、音频输出单元703、输入单元704、传感器705、显示单元706、用户输入单元707、接口单元708、存储器709以及处理器710等中的至少部分部件。
本领域技术人员可以理解，UE700还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器710逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图10中示出的UE结构并不构成对UE的限定，UE可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元704可以包括图形处理单元(Graphics Processing Unit，GPU)7041和麦克风7042，图形处理器7041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元706可包括显示面板7061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板7061。用户输入单元707包括触控面板7071以及其他输入设备7072中的至少一种。触控面板7071，也称为触摸屏。触控面板7071可包括触摸检测装置和触摸控制器两个部分。其他输入设备7072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元701接收来自网络侧设备的下行数据后，可以传输给处理器710进行处理；另外，射频单元701可以向网络侧设备发送上行数据。通常，射频单元701包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工 器等。
存储器709可用于存储软件程序或指令以及各种数据。存储器709可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器709可以包括易失性存储器或非易失性存储器，或者，存储器709可以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)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，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，DDRSDRAM)、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(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器709包括但不限于这些和任意其它适合类型的存储器。
处理器710可包括一个或多个处理单元；可选地，处理器710集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器710中。
其中，处理器710，用于在UE处于车载状态、且UE所在小区为车载移动小区的情况下，执行目标动作；其中，目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
本申请实施例提供一种UE，当UE驻留在车载移动小区时，车载UE可以调整车载移动小区所在频率的优先级为目标优先级，或基于车载状态专用重选偏移量进行小区重选，或基于车载状态专用重选迟滞时间进行小区重选，而并非直接随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选，改善了UE的服务质量。
本申请实施例提供的UE能够实现上述方法实施例中UE实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种网络侧设备，包括处理器和通信接口，通信接口用于向UE发送配置信息，该配置信息用于指示处于车载状态的UE执行目标动作；其中，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作，该目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。该网络侧设备实施例与上述网络侧设备方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图11所示，该网络侧设备600包括：天线61、射频装置62、基带装置63、处理器64和存储器65。天线61与射频装置62连接。在上行方向上，射频装置62通过天线61接收信息，将接收的信息发送给基带装置63进行处理。在下行方向上，基带装置63对要发送的信息进行处理，并发送给射频装置62，射频装置62对收到的信息进行处理后经过天线61发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置63中实现，该基带装置63包括基带处理器。
其中，射频装置62，用于向UE发送配置信息，该配置信息用于指示处于车载状态的UE执行目标动作；其中，在UE处于车载状态、且UE所在小区为车载移动小区的情况下，UE执行目标动作，该目标动作为以下任一项：确定车载移动小区对应的载波频率的优先级为目标优先级，并根据目标优先级进行异频小区重选；基于车载状态专用重选偏移量进行小区重选；基于车载状态专用重选迟滞时间进行小区重选。
本申请实施例提供一种网络侧设备，网络侧设备可以向UE发送配置信息，以使得当UE驻留在车载移动小区时，车载UE可以调整车载移动小区所在频率的优先级为目标优先级，或基于车载状态专用重选偏移量进行小区重选，或基于车载状态专用重选迟滞时间进行小区重选，而并非直接随着车辆的移动而频繁发生小区的重选，降低了驻留在车载移动小区的车载UE重选到固定小区的概率，避免了车载UE的非必要的小区重选，改善了UE的服务质量。
本申请实施例提供的网络侧设备能够实现上述方法实施例中网络侧设备实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
基带装置63例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图11所示，其中一个芯片例如为基带处理器，通过总线接口与存储器65连接，以调用存储器65中的程序，执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口66，该接口例如为通用公共无线接口(common public radio interface，CPRI)。
具体地，本申请实施例的网络侧设备600还包括：存储在存储器65上并可在处理器64上运行的指令或程序，处理器64调用存储器65中的指令或程序执行图8所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
具体地，本申请实施例还提供了一种网络侧设备。如图12所示，该网络侧设备1200包括：处理器1201、网络接口1202和存储器1203。其中，网络接口1202例如为通用公共无线接口。
具体地，本申请实施例的网络侧设备1200还包括：存储在存储器1203上并可在处理器1201上运行的指令或程序，处理器1201调用存储器1203中的指令或程序执行图8所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的通信设备中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、 磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种通信系统，包括：UE及网络侧设备，所述UE可用于执行如上所述的小区重选方法的步骤，所述网络侧设备可用于执行如上所述的小区重选方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。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可以以计算机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(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (28)

  1. 一种小区重选方法，所述方法包括：
    在用户设备UE处于车载状态、且所述UE所在小区为车载移动小区的情况下，所述UE执行目标动作；
    其中，所述目标动作为以下任一项：
    确定所述车载移动小区对应的载波频率的优先级为目标优先级，并根据所述目标优先级进行异频小区重选；
    基于车载状态专用重选偏移量进行小区重选；
    基于车载状态专用重选迟滞时间进行小区重选。
  2. 根据权利要求1所述的方法，其中，所述UE执行目标动作之前，所述方法还包括以下至少一项：
    所述UE接收接入网设备或核心网设备发送的非接入层NAS消息，所述NAS消息中包括配置信息；
    所述UE接收车载移动自回传IAB节点发送的广播消息，所述广播消息中包括配置信息；
    所述UE接收车载移动IAB节点发送的专有消息，所述专有消息中包括配置信息；
    其中，所述配置信息用于指示所述UE执行所述目标动作。
  3. 根据权利要求2所述的方法，其中，所述配置信息中包括以下至少一项：所述目标优先级、所述车载状态专用重选偏移量和所述车载状态专用重选迟滞时间。
  4. 根据权利要求1至3中任一项所述的方法，其中，所述目标优先级为最高优先级。
  5. 根据权利要求1至3中任一项所述的方法，其中，所述UE执行目标动作之后，所述方法还包括：
    在所述UE满足第一条件的情况下，所述UE根据预存的频率优先级或者从搜索到的小区接收到的频率优先级，确定所述车载移动小区对应的载波频率的优先级；
    其中，所述第一条件包括以下至少一项：所述UE经过小区重选驻留到固定小区、所述车载移动小区的信号质量小于或等于预设阈值、所述UE与所述车载移动小区之间发生无线链路失败、无线链路重建或重选小区。
  6. 根据权利要求1所述的方法，其中，所述目标动作为基于所述车载状态专用重选偏移量进行小区重选；
    所述UE执行目标动作，包括：
    在所述车载移动小区的邻小区的导频信号质量大于或等于目标门限值的情况下，所述UE执行所述邻小区的重选过程，所述目标门限值根据所述车载状态专用重选偏移量确定。
  7. 根据权利要求6所述的方法，其中，所述目标门限值为所述车载状态专用重选 偏移量和预设门限值之和；
    或者，
    所述目标门限值为第一重选偏移量、车载状态专用附加偏移量和预设门限值之和，所述第一重选偏移量为所述车载移动小区中的UE共用的偏移量。
  8. 根据权利要求1所述的方法，其中，所述目标动作为基于所述车载状态专用重选迟滞时间进行小区重选；
    所述UE执行目标动作，包括：
    在所述UE检测到候选小区的时间与上次小区重选的时间之间的间隔大于或等于所述车载状态专用重选迟滞时间的情况下，所述UE执行所述候选小区的重选过程。
  9. 根据权利要求1所述的方法，其中，所述目标优先级、所述车载状态专用重选偏移量和所述车载状态专用重选迟滞时间中的至少一项为：预配置、协议约定、预定义或由网络侧设备配置。
  10. 一种小区重选方法，所述方法包括：
    网络侧设备向用户设备UE发送配置信息，所述配置信息用于指示处于车载状态的UE执行目标动作；
    其中，在所述UE处于车载状态、且所述UE所在小区为车载移动小区的情况下，所述UE执行所述目标动作，所述目标动作为以下任一项：
    确定所述车载移动小区对应的载波频率的优先级为目标优先级，并根据所述目标优先级进行异频小区重选；
    基于车载状态专用重选偏移量进行小区重选；
    基于车载状态专用重选迟滞时间进行小区重选。
  11. 根据权利要求10所述的方法，其中，所述网络侧设备向UE发送配置信息，包括以下至少一项：
    所述网络侧设备向所述UE发送非接入层NAS消息，所述NAS消息中包括所述配置信息，所述网络侧设备为接入网设备或核心网设备；
    所述网络侧设备向所述UE发送广播消息，所述广播消息中包括所述配置信息，所述网络侧设备为车载移动自回传IAB节点；
    所述网络侧设备向所述UE发送专有消息，所述专有消息中包括所述配置信息，所述网络侧设备为车载移动IAB节点。
  12. 一种小区重选装置，所述装置包括：获取模块和执行模块；
    所述获取模块，用于获取目标动作；
    所述执行模块，用于在用户设备UE处于车载状态、且所述UE所在小区为车载移动小区的情况下，执行所述目标动作；
    其中，所述目标动作为以下任一项：
    确定所述车载移动小区对应的载波频率的优先级为目标优先级，并根据所述目标 优先级进行异频小区重选；
    基于车载状态专用重选偏移量进行小区重选；
    基于车载状态专用重选迟滞时间进行小区重选。
  13. 根据权利要求12所述的装置，其中，所述获取模块，具体用于执行以下至少一项：
    接收接入网设备或核心网设备发送的非接入层NAS消息，所述NAS消息中包括配置信息；
    接收车载移动自回传IAB节点发送的广播消息，所述广播消息中包括配置信息；
    接收车载移动IAB节点发送的专有消息，所述专有消息中包括配置信息；
    其中，所述配置信息用于指示所述UE执行所述目标动作。
  14. 根据权利要求13所述的装置，其中，所述配置信息中包括以下至少一项：所述目标优先级、所述车载状态专用重选偏移量和所述车载状态专用重选迟滞时间。
  15. 根据权利要求12至14中任一项所述的装置，其中，所述目标优先级为最高优先级。
  16. 根据权利要求12至14中任一项所述的装置，其中，所述装置还包括：确定模块；
    所述确定模块，用于在所述执行模块执行目标动作之后，在所述UE满足第一条件的情况下，根据预存的频率优先级或者从搜索到的小区接收到的频率优先级，确定所述车载移动小区对应的载波频率的优先级；
    其中，所述第一条件包括以下至少一项：所述UE经过小区重选驻留到固定小区、所述车载移动小区的信号质量小于或等于预设阈值、所述UE与所述车载移动小区之间发生无线链路失败、无线链路重建或重选小区。
  17. 根据权利要求12所述的装置，其中，所述目标动作为基于所述车载状态专用重选偏移量进行小区重选；
    所述执行模块，具体用于在所述车载移动小区的邻小区的导频信号质量大于或等于目标门限值的情况下，执行所述邻小区的重选过程，所述目标门限值根据所述车载状态专用重选偏移量确定。
  18. 根据权利要求17所述的装置，其中，所述目标门限值为所述车载状态专用重选偏移量和预设门限值之和；
    或者，
    所述目标门限值为第一重选偏移量、车载状态专用附加偏移量和预设门限值之和，所述第一重选偏移量为所述车载移动小区中的UE共用的偏移量。
  19. 根据权利要求12所述的装置，其中，所述目标动作为基于所述车载状态专用重选迟滞时间进行小区重选；
    所述执行模块，具体用于在所述UE检测到候选小区的时间与上次小区重选的时 间之间的间隔大于或等于所述车载状态专用重选迟滞时间的情况下，执行所述候选小区的重选过程。
  20. 根据权利要求12所述的装置，其中，所述目标优先级、所述车载状态专用重选偏移量和所述车载状态专用重选迟滞时间中的至少一项为：预配置、协议约定、预定义或由网络侧设备配置。
  21. 一种小区重选装置，应用于网络侧设备，所述装置包括：发送模块；
    所述发送模块，用于向用户设备UE发送配置信息，所述配置信息用于指示处于车载状态的UE执行目标动作；
    其中，在所述UE处于车载状态、且所述UE所在小区为车载移动小区的情况下，所述UE执行所述目标动作，所述目标动作为以下任一项：
    确定所述车载移动小区对应的载波频率的优先级为目标优先级，并根据所述目标优先级进行异频小区重选；
    基于车载状态专用重选偏移量进行小区重选；
    基于车载状态专用重选迟滞时间进行小区重选。
  22. 根据权利要求21所述的装置，其中，所述发送模块，具体用于执行以下至少一项：
    发送非接入层NAS消息，所述NAS消息中包括所述配置信息，所述网络侧设备为接入网设备或核心网设备；
    向所述UE发送广播消息，所述广播消息中包括所述配置信息，所述网络侧设备为车载移动自回传IAB节点；
    向所述UE发送专有消息，所述专有消息中包括所述配置信息，所述网络侧设备为车载移动IAB节点。
  23. 一种用户设备UE，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至9中任一项所述的小区重选方法的步骤。
  24. 一种网络侧设备，包括处理器，存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求10或11所述的小区重选方法的步骤。
  25. 一种通信系统，所述通信系统包括如权利要求12至20中任一项所述的小区重选装置和如权利要求21或22所述的小区重选装置；或者，
    所述通信系统包括如权利要求23所述的用户设备UE和如权利要求24所述的网络侧设备。
  26. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至9中任一项所述的小区重选方法的步骤，或者实现如权利要求10或11所述的小区重选方法的步骤。
  27. 一种计算机程序产品，所述程序产品被至少一个处理器执行以实现如权利要求1至9中任一项所述的小区重选方法，或者实现如权利要求10或11所述的小区重选方法。
  28. 一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如权利要求1至9中任一项所述的小区重选方法，或者实现如权利要求10或11所述的小区重选方法。
PCT/CN2023/071653 2022-01-14 2023-01-10 小区重选方法、装置、设备、系统及存储介质 WO2023134684A1 (zh)

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