WO2021031216A1 - 切换处理方法及装置 - Google Patents

切换处理方法及装置 Download PDF

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Publication number
WO2021031216A1
WO2021031216A1 PCT/CN2019/102096 CN2019102096W WO2021031216A1 WO 2021031216 A1 WO2021031216 A1 WO 2021031216A1 CN 2019102096 W CN2019102096 W CN 2019102096W WO 2021031216 A1 WO2021031216 A1 WO 2021031216A1
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WO
WIPO (PCT)
Prior art keywords
cell
handover
command
access
handover processing
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PCT/CN2019/102096
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English (en)
French (fr)
Inventor
杨星
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN201980001856.1A priority Critical patent/CN110637478A/zh
Priority to US17/636,737 priority patent/US20220303841A1/en
Priority to PCT/CN2019/102096 priority patent/WO2021031216A1/zh
Priority to EP19942435.9A priority patent/EP4020914A4/en
Publication of WO2021031216A1 publication Critical patent/WO2021031216A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • 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
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • 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
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/087—Reselecting an access point between radio units of access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover

Definitions

  • the present disclosure relates to communication technology, and in particular, to a handover processing method and device.
  • a conditional handover (CHO) process is proposed, that is, the network can prepare the target cell for handover in advance, and provide the user equipment (User Equipment, The UE) sends the CHO command, which carries the handover target cell and the handover trigger condition.
  • the UE User Equipment
  • the UE initiates the handover process by itself without the network sending the handover command.
  • the network can send a handover command to the UE. After receiving the handover command, the UE will switch to the target cell according to the handover command, and no longer comply with the CHO command. If the UE is based on this The switch command failed and the connection needs to be restored.
  • the present disclosure provides a switching processing method and device.
  • a handover processing method including:
  • the handover command carries a first cell identity and at least one second cell identity; the first cell identified by the first cell identity is: the target cell for handover; the second cell identified by the second cell identity is: After a user terminal (UE) fails to switch to the first cell, the cell that the UE can access;
  • UE user terminal
  • a handover processing method applied to a user terminal including:
  • a handover processing device including:
  • the determining unit is configured to carry a first cell identity and at least one second cell identity in a handover command; the first cell identified by the first cell identity is: the target cell for handover; and the second cell identity is identified
  • the second cell in is: a cell that the UE can access after the UE fails to switch to the first cell;
  • the sending unit is configured to send the handover command to the UE.
  • a handover processing apparatus applied to a UE including:
  • a receiving unit configured to receive a handover command, where the handover command carries a first cell identity and at least one second cell identity;
  • a handover processing unit configured to access the first cell identified by the first cell identifier based on the handover command
  • the handover processing unit is further configured to access the second cell identified by the second cell identifier after failing to access the first cell.
  • a handover processing device including:
  • a memory for storing processor executable instructions
  • the processor is configured to execute the executable instruction to implement any one of the aforementioned handover processing methods applied to the base station side technical solution.
  • a handover processing device including:
  • a memory for storing processor executable instructions
  • the processor is configured to execute the executable instruction to implement any one of the aforementioned handover processing methods applied to the UE side technical solution.
  • the base station carries the first cell identifier and at least one second cell identifier in the handover command; the first cell identified by the first cell identifier is: the target cell for handover; the second cell identified by the second cell identifier is : After the UE fails to switch to the first cell, the cell that the UE can access; sends the handover command to the UE; in this way, it is convenient for the UE to quickly select the available cell after failing to access the first cell The access to the second cell can restore the connection, which can improve the success rate of the connection recovery after the handover fails.
  • Fig. 1 is a schematic structural diagram showing a wireless communication system according to an exemplary embodiment
  • Fig. 2 is a first flow chart showing a handover processing method according to an exemplary embodiment
  • Fig. 3 is a second flowchart of a handover processing method according to an exemplary embodiment
  • Fig. 4 is a first flow chart of handover processing according to an exemplary embodiment
  • Fig. 5 is a second flowchart of handover processing according to an exemplary embodiment
  • Fig. 6 is a third flowchart of handover processing according to an exemplary embodiment
  • Fig. 7 is a first block diagram of a handover processing device according to an exemplary embodiment
  • Fig. 8 is a second block diagram of a handover processing device according to an exemplary embodiment
  • Fig. 9 is a first block diagram showing a device 800 for implementing handover processing according to an exemplary embodiment
  • Fig. 10 is a second block diagram showing a device 900 for implementing handover processing according to an exemplary embodiment.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as second information, and similarly, the second information may also be referred to as first information.
  • the words "if” and “if” as used herein can be interpreted as “when” or “when” or “in response to certainty”.
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include several terminals 11 and several base stations 12.
  • the terminal 11 may be a device that provides voice and/or data connectivity to the user.
  • the terminal 11 can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the terminal 11 can be an IoT terminal, such as a sensor device, a mobile phone (or “cellular” phone), and
  • the computer of the Internet of Things terminal for example, may be a fixed, portable, pocket-sized, handheld, computer-built-in or vehicle-mounted device.
  • station Station, STA
  • subscriber unit subscriber unit
  • subscriber station subscriber station
  • mobile station mobile station
  • mobile station mobile
  • remote station remote station
  • access point remote terminal
  • access terminal access terminal
  • user device user terminal
  • user agent user agent
  • user equipment user device
  • user terminal User Equipment
  • the terminal 11 may also be a device of an unmanned aerial vehicle.
  • the terminal 11 may also be an in-vehicle device, for example, it may be a trip computer with a wireless communication function, or a wireless communication device external to the trip computer.
  • the terminal 11 may also be a roadside device, for example, it may be a street lamp, signal lamp, or other roadside device with a wireless communication function.
  • the base station 12 may be a network side device in a wireless communication system.
  • the wireless communication system may be the 4th generation mobile communication (4G) system, also known as the Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as the New Radio (NR) system or 5G NR system.
  • the wireless communication system may also be the next-generation system of the 5G system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network).
  • NG-RAN New Generation-Radio Access Network
  • MTC machine-type communication
  • the base station 12 may be an evolved base station (eNB) used in a 4G system.
  • the base station 12 may also be a base station (gNB) adopting a centralized and distributed architecture in the 5G system.
  • the base station 12 adopts a centralized and distributed architecture it usually includes a centralized unit (Central Unit, CU) and at least two distributed units (Distributed Unit, DU).
  • the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a media access control (Media Access Control, MAC) layer.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC media access control
  • a physical (Physical, PHY) layer protocol stack is provided in the unit, and the embodiment of the present disclosure does not limit the specific implementation of the base station 12.
  • a wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as The wireless air interface is a new air interface; or, the wireless air interface may also be a wireless air interface based on 5G-based next-generation mobile communication network technology standards.
  • E2E (End to End, end-to-end) connections may also be established between the terminals 11.
  • V2V (Vehicle to Vehicle) communication V2I (Vehicle to Infrastructure) communication
  • V2P Vehicle to Everything
  • the above-mentioned wireless communication system may further include a network management device 13.
  • the network management device 13 may be a core network device in a wireless communication system.
  • the network management device 13 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME).
  • the network management device may also be other core network devices, such as Serving Gate Way (SGW), Public Data Network Gateway (Public Data Network Gate Way, PGW), policy and charging rules function unit (Policy and Charging Rules Function, PCRF) or home subscriber network side device (Home Subscriber Server, HSS), etc.
  • SGW Serving Gate Way
  • PGW Public Data Network Gateway
  • PCRF Policy and Charging Rules Function
  • HSS home subscriber network side device
  • the implementation form of the network management device 13 is not limited in the embodiment of the present disclosure.
  • the source cell first sends a handover request to the handover target cell according to the measurement report result of the UE; then, after the target cell confirms the completion, it sends a handover command carrying the configuration information of the target cell to the UE; finally, the UE receives After the handover command is reached, the configuration of the source cell is released, and the random access procedure is initiated to the target cell using the configuration of the target cell in the handover command.
  • the CHO process is proposed in 5G, that is, the network can prepare the handover target cell in advance and send the CHO command to the UE, which carries the handover target cell and the handover trigger condition.
  • the UE Initiate the handover process by itself, without the network sending a handover command.
  • the UE Since the CHO target cell has already stored the UE context, if the CHO fails, the UE will preferentially switch or rebuild to other CHO target cells, which can increase the probability of successful connection recovery.
  • the network can send the handover command to the UE. After the UE receives the handover command, it switches to the target cell according to the handover command and no longer obeys the CHO command.
  • the base station may have released the UE context of other CHO target cells before sending the handover command to the UE. If the base station sends a handover command to the UE before the UE executes CHO, the UE will directly switch based on the handover command; if handover fails at this time, the UE will preferentially select the CHO target cell for handover or re-establishment. In this case, handover or Rebuild failure problem.
  • Fig. 2 is a first flow chart showing a handover processing method according to an exemplary embodiment. As shown in Fig. 2, the handover processing method is used in a base station and includes the following steps.
  • a first cell identifier and at least one second cell identifier are carried in the handover command; the first cell identified by the first cell identifier is: the target cell for handover; the second cell identified by the second cell identifier The cell is: a cell that the UE can access after the user terminal (UE) fails to switch to the first cell.
  • the second cell is the cell indicated by the CHO command.
  • the first cell is a target cell that the UE needs to access when the UE receives a handover command;
  • the second cell is a cell that can be accessed after the UE fails to access the first cell.
  • the handover command also carries time length information, where the time length information is used to indicate the time range within which the UE can access the second cell.
  • time ranges corresponding to different second cells may be the same or different.
  • step S12 the handover command is sent to the UE.
  • the sending the handover command to the UE includes:
  • the handover command is sent to the UE.
  • CHO conditional handover
  • the method further includes:
  • the resources for the UE to access the second cell are released.
  • the handover command when the base station sends a handover command for instructing handover to the first cell to the UE, the handover command also carries the first cell that the UE can access if the UE fails to handover to the first cell.
  • the indication information of the second cell identifier facilitates the UE to quickly select an accessible cell to restore the connection after failing to access the first cell, and can improve the success rate of the connection restoration after the handover fails.
  • Fig. 3 is a second flowchart of a handover processing method according to an exemplary embodiment. As shown in Fig. 3, the handover processing method is used in a user terminal (UE) and includes the following steps.
  • UE user terminal
  • step S21 a handover command is received, and the handover command carries a first cell identity and at least one second cell identity.
  • the second cell identified by the second cell identifier is the cell indicated by the CHO command.
  • step S22 based on the handover command, access to the first cell identified by the first cell identity.
  • step S23 after access to the first cell fails, access to the second cell identified by the second cell identity.
  • the communication connection can be restored according to the access to the second cell accessible to the UE, which can improve the success rate of connection restoration after the handover fails.
  • accessing the second cell identified by the second cell identifier includes:
  • one of the multiple second cells is selected as the access object.
  • the handover command also carries time-length information.
  • accessing the second cell identified by the second cell identifier includes:
  • the method further includes:
  • the timer When switching to the first cell based on the switching command, the timer is used to start timing.
  • accessing the second cell identified by the second cell identifier includes:
  • the technical solutions described in the embodiments of the present disclosure facilitate the UE after failing to access the first cell, according to the indication of the second cell identification that the UE can access if the UE fails to switch to the first cell after the handover command also carries Information, quickly select the accessible cell to restore the connection, which can improve the success rate of the connection recovery after the handover fails.
  • Fig. 4 is a first flow chart of handover processing according to an exemplary embodiment. The flow includes the following steps.
  • Step 401 The base station sends a conditional handover (CHO) command to the UE, where the CHO command carries target cell identifiers a, b, c and handover trigger conditions.
  • CHO conditional handover
  • the handover trigger condition is that the Reference Signal Receiving Power (RSRP) of cell 1 is 3 db higher than the RSRP of the serving cell.
  • RSRP Reference Signal Receiving Power
  • switching trigger condition is only illustrative, and can be set or adjusted according to actual conditions or design requirements.
  • Step 402 After receiving the CHO command, the UE measures the reference signal received power (RSRP) of the target cells a, b, and c, and detects whether the handover trigger condition is met.
  • RSRP reference signal received power
  • the handover trigger condition in step 401 may also be that: the reference signal receiving quality (RSRQ) of cell 1 is 3 db higher than the RSRQ of the serving cell.
  • the handover trigger condition is merely illustrative, and the value of the RSRQ of the cell 1 higher than the RSRQ of the serving cell can be set or adjusted according to actual conditions or design requirements.
  • the UE after receiving the CHO command, the UE measures the RSRQ of the target cells a, b, and c, and detects whether the handover trigger condition is met.
  • Step 403 Before the UE performs handover based on the CHO command, the base station sends a handover command to the UE, where the handover command carries the handover target cell b and indication information, and the indication information includes target cell a accessible and target cell c Has been released.
  • Step 404 After receiving the handover command, the UE performs handover to the handover target cell b.
  • Step 405 If the UE fails to switch to the handover target cell b, it will preferentially perform handover or connection reestablishment to the target cell a.
  • the UE before the UE performs handover based on the CHO command, if the UE receives a handover command, it will switch to the target cell b based on the handover command; if the UE fails to handover to the target cell b, and the target cell a can Access, select target cell a for handover or connection reestablishment.
  • Fig. 5 is a second flow chart of handover processing according to an exemplary embodiment. The flow includes the following steps.
  • Step 501 The base station sends a CHO command to the UE, where the CHO command carries target cell identifiers a, b, c, d and handover trigger conditions.
  • the handover trigger condition is that the reference signal RSRP of cell 1 is 5 db higher than the RSRP of the serving cell.
  • switching trigger condition is only illustrative, and can be set or adjusted according to actual conditions or design requirements.
  • Step 502 After receiving the CHO command, the UE measures the RSRP of target cells a, b, c, and d and detects whether the handover trigger condition is met.
  • the handover trigger condition in step 501 may also be: the RSRQ of cell 1 is 5 db higher than the RSRQ of the serving cell.
  • the handover trigger condition is merely illustrative, and the value of the RSRQ of the cell 1 higher than the RSRQ of the serving cell can be set or adjusted according to actual conditions or design requirements.
  • the UE after receiving the CHO command, the UE measures the RSRQ of the target cells a, b, c, and d, and detects whether the handover trigger condition is satisfied.
  • Step 503 Before the UE performs handover based on the CHO command, the base station sends a handover command to the UE, where the handover command carries the handover target cell b and indication information, and the indication information includes the accessibility and duration of target cells a and d. Information 500ms, target cell c has been released.
  • the duration information is used to indicate the time range within which the UE can access the second cell.
  • Step 504 After receiving the handover command, the UE switches to the target cell b and starts a timer.
  • Step 505 If the UE fails to switch to the target cell b, and the timers of the target cell a and the target cell d have not timed out, the target cell a or the target cell d is preferentially handed over or connection reestablished.
  • the UE can choose to perform handover or connection reestablishment to target cell a; the UE can also choose to perform handover or connection reestablishment to target cell d.
  • the specific selection of target cell a or target cell d is determined by the UE itself.
  • the UE before the UE performs handover based on the CHO command, if the UE receives the handover command, it will switch to the target cell b based on the handover command; if the UE fails to handover to the target cell b, and the target cell d and If none of the timers of the target cell a expire, one of the target cell d and the target cell a can be selected for handover or connection reestablishment.
  • Fig. 6 is a third flowchart of handover processing according to an exemplary embodiment. The process includes:
  • Step 601 The base station sends a CHO command to the UE, where the CHO command carries target cell identifiers a, b, c, d and handover trigger conditions.
  • the handover trigger condition is that the reference signal RSRP of cell 1 is 2db higher than the RSRP of the serving cell.
  • switching trigger condition is only illustrative, and can be set or adjusted according to actual conditions or design requirements.
  • Step 602 After receiving the CHO command, the UE measures the RSRP of the target cells a, b, c, and d, and detects whether the handover trigger condition is met.
  • the handover trigger condition in step 601 may also be: the RSRQ of cell 1 is 2db higher than the RSRQ of the serving cell.
  • the handover trigger condition is merely illustrative, and the value of the RSRQ of cell 1 higher than the RSRQ of the serving cell can be set or adjusted according to actual conditions or design requirements.
  • the UE after receiving the CHO command, the UE measures the RSRQ of the target cells a, b, c, and d, and detects whether the handover trigger condition is satisfied.
  • Step 603 Before the UE performs handover based on the CHO command, the base station sends a handover command to the UE, where the handover command carries the handover target cell b and indication information.
  • the indication information includes the accessibility of target cells a and d, and the target cell
  • the duration information corresponding to the cell a is 500 ms
  • the duration information corresponding to the target cell d is 400 ms
  • the target cell c has been released.
  • the duration information is used to indicate the time range within which the UE can access the second cell.
  • Step 604 After receiving the handover command, the UE performs handover to the handover target cell b and starts a timer.
  • Step 605 If the UE fails to handover to the target cell b, and the timer of the target cell d has expired but the timer of the target cell a has not expired, then the handover or connection reestablishment to the target cell a is given priority.
  • the UE before the UE performs handover based on the CHO command, if the UE receives the handover command, it will handover to the target cell b based on the handover command; if the UE fails to handover to the target cell b and the target cell d If the timer has expired but the timer of the target cell a has not expired, the handover or connection re-establishment to the target cell a is preferred.
  • Fig. 7 is a first block diagram of a handover processing device according to an exemplary embodiment.
  • the handover processing device is applied to the base station side.
  • the device includes a determining unit 10 and a sending unit 20.
  • the determining unit 10 is configured to carry a first cell identifier and at least one second cell identifier in a handover command; the first cell identified by the first cell identifier is: the target cell for handover; the second cell identifier identifies The second cell is: a cell that the UE can access after the UE fails to switch to the first cell;
  • the sending unit 20 is configured to send the handover command to the UE.
  • the handover command also carries time length information, where the time length information is used to indicate the time range within which the UE can access the second cell.
  • the determining unit 10 is further configured to:
  • the resources for the UE to access the second cell are released.
  • the sending unit 20 is configured to:
  • the handover command is sent to the UE.
  • the second cell is the cell indicated by the CHO command.
  • the specific structures of the determination unit 10 and the sending unit 20 can be determined by the handover processing device or the central processing unit (CPU) and microprocessor (MCU, Micro Controller Unit) in the base station to which the handover processing device belongs. ), digital signal processor (DSP, Digital Signal Processing) or programmable logic device (PLC, Programmable Logic Controller).
  • CPU central processing unit
  • MCU Micro Controller Unit
  • DSP digital signal processor
  • PLC programmable logic device
  • the handover processing device described in this embodiment can be set on the base station side.
  • each processing module in the handover processing device of the embodiment of the present disclosure can be understood by referring to the relevant description of the handover processing method applied to the base station side.
  • the module may be realized by an analog circuit that realizes the functions described in the embodiments of the present disclosure, or may be realized by running software that performs the functions described in the embodiments of the present disclosure on the terminal.
  • the handover processing device described in the embodiment of the present disclosure can enable the base station to send a handover command for instructing handover to the first cell to the UE, and the handover command also carries that the UE can be
  • the indication information of the identifier of the second cell to be accessed facilitates the UE to quickly select an accessible cell according to the indication information to restore the connection after failing to access the first cell, which can improve the success rate of connection restoration after handover failure.
  • Fig. 8 is a second block diagram of a handover processing device according to an exemplary embodiment.
  • the switching processing device is applied to the user terminal side; referring to FIG. 8, the device includes a receiving unit 30 and a switching processing unit 40.
  • the receiving unit 30 is configured to receive a handover command, where the handover command carries a first cell identity and at least one second cell identity;
  • the handover processing unit 40 is configured to access the first cell identified by the first cell identifier based on the handover command;
  • the handover processing unit 40 is further configured to access the second cell identified by the second cell identifier after failing to access the first cell.
  • the handover command also carries time-length information
  • the switching processing unit 40 is configured to:
  • the device may further include:
  • the timing unit 50 is configured as:
  • the timer When switching to the first cell based on the switching command, the timer is used to start timing.
  • the handover processing unit 40 is further configured to:
  • a second cell whose timer has not expired is selected from all the second cells as the second cell to be accessed.
  • the receiving unit 30 is further configured to receive a CHO command; the handover processing unit 40 is configured to perform a handover to the first cell based on the handover command before the UE performs handover based on the CHO command Switch.
  • the second cell is the cell indicated by the CHO command.
  • the specific structures of the receiving unit 30, the switching processing unit 40, and the timing unit 50 can be implemented by the CPU, MCU, DSP, or PLC in the switching processing device or the terminal to which the switching processing device belongs.
  • the handover processing device described in this embodiment may be installed on the user terminal side.
  • each processing module in the handover processing device of the embodiment of the present disclosure can be understood with reference to the relevant description of the handover processing method applied to the user terminal side.
  • the processing module may be implemented by an analog circuit that implements the functions described in the embodiments of the present disclosure, or may be implemented by running software that implements the functions described in the embodiments of the present disclosure on the terminal.
  • the handover processing device facilitates the UE after failing to access the first cell, according to the second cell identification that the UE can access after the UE fails to handover to the first cell carried in the handover command
  • the indication information can quickly select the accessible cell to restore the connection, which can improve the success rate of the connection recovery after the handover fails.
  • Fig. 9 is a block diagram showing a device 800 for implementing handover processing according to an exemplary embodiment.
  • the device 800 may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • the device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (Input/Output, I/O) interface 812, The sensor component 814, and the communication component 816.
  • a processing component 802 a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (Input/Output, I/O) interface 812, The sensor component 814, and the communication component 816.
  • the processing component 802 generally controls the overall operations of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components.
  • the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.
  • the memory 804 is configured to store various types of data to support operations in the device 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 804 can be implemented by any type of volatile or non-volatile storage devices or their combination, such as static random access memory (Static Random-Access Memory, SRAM), electrically erasable programmable read-only memory (Electrically -Erasable Programmable Read Only Memory, EEPROM, Erasable Programmable Read Only Memory (EPROM), Programmable Read-only Memory (PROM), Read Only Memory (Read Only Memory) , ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • SRAM static random access memory
  • EEPROM Electrically erasable programmable read-only memory
  • EPROM Erasable Programmable Read Only Memory
  • PROM Programmable Read-only Memory
  • Read Only Memory Read Only Memory
  • the power component 806 provides power to various components of the device 800.
  • the power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 800.
  • the multimedia component 808 includes a screen that provides an output interface between the device 800 and the user.
  • the screen may include a liquid crystal display (Liquid Crystal Display, LCD) and a touch panel (Touch Panel, TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure related to the touch or slide operation.
  • the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC for short).
  • the microphone is configured to receive external audio signals.
  • the received audio signal may be further stored in the memory 804 or transmitted via the communication component 816.
  • the audio component 810 further includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 814 includes one or more sensors for providing the device 800 with various aspects of status assessment.
  • the sensor component 814 can detect the open/close state of the device 800 and the relative positioning of components.
  • the component is the display and the keypad of the device 800.
  • the sensor component 814 can also detect the position change of the device 800 or a component of the device 800. , The presence or absence of contact between the user and the device 800, the orientation or acceleration/deceleration of the device 800, and the temperature change of the device 800.
  • the sensor component 814 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 814 may also include a light sensor, such as a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) or a charge-coupled device (Charge-coupled Device, CCD) image sensor for use in imaging applications.
  • CMOS Complementary Metal Oxide Semiconductor
  • CCD Charge-coupled Device
  • the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 816 is configured to facilitate wired or wireless communication between the device 800 and other devices.
  • the device 800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof.
  • the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communication.
  • the NFC module can be based on radio frequency identification (RFID) technology, infrared data association (Infrared Data Association, IrDA) technology, ultra wideband (UWB) technology, Bluetooth (Blue Tooth, BT) technology and Other technologies to achieve.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra wideband
  • Bluetooth Bluetooth
  • the device 800 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (Digital Signal Processor, DSP), digital signal processing devices (Digital Signal Processing Device, DSPD), programmable logic device (Programmable Logic Device, PLD), Field Programmable Gate Array (Field Programmable Gate Array, FPGA), controller, microcontroller, microprocessor or other electronic components to implement the above switching Approach.
  • ASIC application specific integrated circuits
  • DSP Digital Signal Processor
  • DSPD digital signal processing devices
  • DSPD Digital Signal Processing Device
  • PLD programmable logic device
  • Field Programmable Gate Array Field Programmable Gate Array
  • controller microcontroller, microprocessor or other electronic components to implement the above switching Approach.
  • non-transitory computer storage medium including executable instructions, such as a memory 804 including executable instructions.
  • the executable instructions can be executed by the processor 820 of the device 800 to complete the foregoing method.
  • the non-transitory computer storage medium may be ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
  • Fig. 10 is a block diagram showing a device 900 for implementing handover processing according to an exemplary embodiment.
  • the device 900 may be provided as a server.
  • the device 900 includes a processing component 922, which further includes one or more processors, and a memory resource represented by a memory 932, for storing instructions that can be executed by the processing component 922, such as application programs.
  • the application program stored in the memory 932 may include one or more modules each corresponding to a set of instructions.
  • the processing component 922 is configured to execute instructions to execute the switching processing method described above.
  • the device 900 may also include a power component 926 configured to perform power management of the device 900, a wired or wireless network interface 950 configured to connect the device 900 to a network, and an input output (I/O) interface 958.
  • the device 900 can operate based on an operating system stored in the memory 932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.
  • a first cell identifier and at least one second cell identifier are carried in a handover command; the first cell identified by the first cell identifier is: the target cell for handover; the second cell identifier The identified second cell is: the cell that the UE can access after the user terminal UE fails to switch to the first cell; sending the handover command to the UE is such that it is convenient for the UE to quickly switch after the handover fails. Selecting an accessible cell to restore the connection can improve the success rate of restoring the connection after the handover fails.

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Abstract

本公开实施例公开了一种切换处理方法及装置，所述方法包括：在切换命令中携带第一小区标识和至少一个第二小区标识；所述第一小区标识所标识的第一小区为：切换的目标小区；所述第二小区标识所标识的第二小区为：在UE切换至所述第一小区失败后，所述UE能够接入的小区；将所述切换命令发送至所述UE。

Description

切换处理方法及装置 技术领域
本公开涉及通信技术，尤其涉及一种切换处理方法及装置。
背景技术
在第5代移动通信技术(5th generation mobile networks或5th generation wireless systems，简称5G)提出了条件切换(conditional handover，CHO)过程，即网络可以提前准备切换目标小区，并为用户终端(User Equipment，UE)发送CHO命令，其中携带切换目标小区和切换触发条件，当切换触发条件得到满足时，UE自行发起切换过程，不需要网络再发送切换命令。
当UE收到CHO命令，但是还没有进行切换时，网络可以向UE发送切换命令，UE收到切换命令后，按照切换命令的指示向目标小区进行切换，不再遵守CHO命令，若UE基于该切换命令切换失败，需要恢复连接。
发明内容
本公开提供一种切换处理方法及装置。
根据本公开实施例的第一方面，提供一种切换处理方法，包括：
在切换命令中携带第一小区标识和至少一个第二小区标识；所述第一小区标识所标识的第一小区为：切换的目标小区；所述第二小区标识所标识的第二小区为：在用户终端(UE)切换至所述第一小区失败后，所述UE能够接入的小区；
将所述切换命令发送至所述UE。
根据本公开实施例的第二方面，提供了一种切换处理方法，应用于用户终端(UE)，包括：
接收切换命令，所述切换命令中携带第一小区标识和至少一个第二小 区标识；
基于所述切换命令，接入到所述第一小区标识所标识的所述第一小区；
在接入至所述第一小区失败后，接入所述第二小区标识所标识的第二小区。
根据本公开实施例的第三方面，提供了一种切换处理装置，包括：
确定单元，被配置为在切换命令中携带第一小区标识和至少一个第二小区标识；所述第一小区标识所标识的第一小区为：切换的目标小区；所述第二小区标识所标识的第二小区为：在UE切换至所述第一小区失败后，所述UE能够接入的小区；
发送单元，被配置为将所述切换命令发送至所述UE。
根据本公开实施例的第四方面，提供了一种切换处理装置，应用于UE，包括：
接收单元，被配置为接收切换命令，所述切换命令中携带第一小区标识和至少一个第二小区标识；
切换处理单元，被配置为基于所述切换命令，接入到所述第一小区标识所标识的所述第一小区；
所述切换处理单元，还被配置为在接入至所述第一小区失败后，接入所述第二小区标识所标识的第二小区。
根据本公开实施例的第五方面，提供一种切换处理装置，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为通过执行所述可执行指令，实现前述任意一个应用于基站侧技术方案所述的切换处理方法。
根据本公开实施例的第六方面，提供一种切换处理装置，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为通过执行所述可执行指令，实现前述任意一个应用于UE侧技术方案所述的切换处理方法。
本公开的实施例提供的技术方案可以包括以下有益效果：
基站在切换命令中携带第一小区标识和至少一个第二小区标识；所述第一小区标识所标识的第一小区为：切换的目标小区；所述第二小区标识所标识的第二小区为：在UE切换至所述第一小区失败后，所述UE能够接入的小区；将所述切换命令发送至所述UE；如此，便于UE在接入至第一小区失败后能够快速选择可接入的第二小区以恢复连接，能提高切换失败后恢复连接的成功率。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1是根据一示例性实施例示出的一种无线通信系统的结构示意图；
图2是根据一示例性实施例示出的一种切换处理方法的流程图一；
图3是根据一示例性实施例示出的一种切换处理方法的流程图二；
图4是根据一示例性实施例示出的切换处理流程图一；
图5是根据一示例性实施例示出的切换处理流程图二；
图6是根据一示例性实施例示出的切换处理流程图三；
图7是根据一示例性实施例示出的一种切换处理装置的框图一；
图8是根据一示例性实施例示出的一种切换处理装置的框图二；
图9是根据一示例性实施例示出的一种用于实现切换处理的装置800的框图一；
图10是根据一示例性实施例示出的一种用于实现切换处理的装置900 的框图二。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”、“一个”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
请参考图1，其示出了本公开实施例提供的一种无线通信系统的结构示意图。如图1所示，无线通信系统是基于蜂窝移动通信技术的通信系统，该无线通信系统可以包括：若干个终端11以及若干个基站12。
其中，终端11可以是指向用户提供语音和/或数据连通性的设备。终端11可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，终端11可以是物联网终端，如传感器设备、移动电话(或称为“蜂窝”电话)和具有物联网终端的计算机，例如，可以是固定式、便携 式、袖珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程终端(remote terminal)、接入终端(access terminal)、用户装置(user terminal)、用户代理(user agent)、用户设备(user device)、或用户终端(User Equipment，UE)。或者，终端11也可以是无人飞行器的设备。或者，终端11也可以是车载设备，比如，可以是具有无线通信功能的行车电脑，或者是外接行车电脑的无线通信设备。或者，终端11也可以是路边设备，比如，可以是具有无线通信功能的路灯、信号灯或者其它路边设备等。
基站12可以是无线通信系统中的网络侧设备。其中，该无线通信系统可以是第四代移动通信技术(the 4th generation mobile communication，4G)系统，又称长期演进(Long Term Evolution，LTE)系统；或者，该无线通信系统也可以是5G系统，又称新空口(New Radio，NR)系统或5G NR系统。或者，该无线通信系统也可以是5G系统的再下一代系统。其中，5G系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。或者，机器类型通信(Machine-Type Communication，MTC)系统。
其中，基站12可以是4G系统中采用的演进型基站(eNB)。或者，基站12也可以是5G系统中采用集中分布式架构的基站(gNB)。当基站12采用集中分布式架构时，通常包括集中单元(Central Unit，CU)和至少两个分布单元(Distributed Unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本公开实施例对基站12的具体实现方式不加以限定。
基站12和终端11之间可以通过无线空口建立无线连接。在不同的实 施方式中，该无线空口是基于第四代移动通信网络技术(4G)标准的无线空口；或者，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
在一些实施例中，终端11之间还可以建立E2E(End to End，端到端)连接。比如车联网通信(Vehicle to Everything，V2X)中的V2V(Vehicle to Vehicle，车对车)通信、V2I(Vehicle to Infrastructure，车对路边设备)通信和V2P(Vehicle to Pedestrian，车对人)通信等场景。
在一些实施例中，上述无线通信系统还可以包含网络管理设备13。
若干个基站12分别与网络管理设备13相连。其中，网络管理设备13可以是无线通信系统中的核心网设备，比如，该网络管理设备13可以是演进的数据分组核心网(Evolved Packet Core，EPC)中的移动性管理实体(Mobility Management Entity，MME)。或者，该网络管理设备也可以是其它的核心网设备，比如服务网关(Serving Gate Way，SGW)、公用数据网网关(Public Data Network Gate Way，PGW)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)或者归属签约用户网络侧设备(Home Subscriber Server，HSS)等。对于网络管理设备13的实现形态，本公开实施例不做限定。
在4G的切换过程中，首先源小区会根据UE的测量上报结果向切换目标小区发送切换请求；然后，目标小区确认完成后，向UE发送携带目标小区的配置信息的切换命令；最后，UE收到切换命令后，释放源小区的配置，采用切换命令中目标小区的配置向目标小区发起随机接入过程。
为了提高切换的鲁棒性，在5G提出了CHO过程，即网络可以提前准备切换目标小区，并为UE发送CHO命令，其中携带切换目标小区和切换触发条件，当切换触发条件得到满足时，UE自行发起切换过程，不需要网络再发送切换命令。
由于CHO目标小区都已经存储了UE上下文，如果CHO发生失败，UE会优先向其他CHO目标小区进行切换或者重建，这样能够提高连接成功恢复概率。当UE收到CHO命令，但是还没有进行切换时，网络可以向UE发送切换命令，UE收到切换命令后，按照切换命令的指示向目标小区进行切换，不再遵守CHO命令。
基站向UE发送切换命令之前可能已经释放了其他CHO目标小区的UE上下文。若在UE执行CHO之前，基站向UE发送切换命令，UE将直接基于该切换命令进行切换；如果这时发生切换失败，UE将优先选择CHO目标小区进行切换或者重建，此情况下可能出现切换或重建失败问题。
基于上述无线通信系统，如何在切换失败后合理选择小区以成功恢复连接，提出本公开方法各个实施例。
图2是根据一示例性实施例示出的一种切换处理方法的流程图一，如图2所示，该切换处理方法用于基站中，包括以下步骤。
在步骤S11中，在切换命令中携带第一小区标识和至少一个第二小区标识；该第一小区标识所标识的第一小区为：切换的目标小区；该第二小区标识所标识的第二小区为：在用户终端(UE)切换至该第一小区失败后，该UE能够接入的小区。
其中，该第二小区为CHO命令指示的小区。
其中，该第一小区为UE收到切换命令时该UE需要接入的目标小区；该第二小区为该UE接入至该第一小区失败后可接入的小区。
作为一种实施方式，该切换命令中还携带有时长信息，其中，该时长信息用于指示该UE能够接入该第二小区的时间范围。
需要说明的是，不同第二小区对应的时间范围可以相同，也可以不同。
在步骤S12中，将该切换命令发送至该UE。
作为一种实施方式，该将该切换命令发送至该UE，包括：
在确定该UE未基于条件切换(CHO)命令执行切换前，将该切换命 令发送至该UE。
上述方案中，该方法还包括：
根据该时长信息，为该第二小区配置定时器；
在该定时器超时时，释放供该UE接入该第二小区的资源。
如此，能够减少资源长时间被占用而浪费资源。
本公开实施例所述技术方案，基站向UE发送用于指示切换至第一小区的切换命令时，在该切换命令中还携带有若UE切换至第一小区失败后该UE能够接入的第二小区标识的指示信息，便于UE在接入至第一小区失败后能够快速选择可接入的小区以恢复连接，能提高切换失败后恢复连接的成功率。
图3是根据一示例性实施例示出的一种切换处理方法的流程图二，如图3所示，该切换处理方法用于用户终端(UE)中，包括以下步骤。
在步骤S21中，接收切换命令，该切换命令中携带第一小区标识和至少一个第二小区标识。
其中，该第二小区标识所标识的第二小区为CHO命令指示的小区。
在步骤S22中，基于该切换命令，接入到该第一小区标识所标识的该第一小区。
在步骤S23中，在接入至该第一小区失败后，接入该第二小区标识所标识的第二小区。
如此，UE在接入至第一小区失败后能够根据接入其可接入的第二小区以恢复通信连接，能提高切换失败后恢复连接的成功率。
作为一种实施方式，接入该第二小区标识所标识的第二小区，包括：
当该第二小区有多个时，从多个第二小区中选择一个作为接入对象。
作为一种实施方式，该切换命令中还携带有时长信息。
作为一种实施方式，在接入至该第一小区失败后，接入该第二小区标识所标识的第二小区，包括：
在接入至该第一小区失败且在该时长信息所指示的时间范围内，接入该第二小区标识所标识的第二小区。
上述方案中，该方法还包括：
根据该时长信息为该第二小区配置定时器；
基于该切换命令向该第一小区进行切换时，通过该定时器开始记时。
作为一种实施方式，接入该第二小区标识所标识的第二小区，包括：
从所有第二小区中选择所述定时器未超时的第二小区进行接入。
本公开实施例所述技术方案，便于UE在接入至第一小区失败后，能够根据切换命令中还携带的若UE切换至第一小区失败后该UE能够接入的第二小区标识的指示信息，快速选择可接入的小区以恢复连接，能提高切换失败后恢复连接的成功率。
图4是根据一示例性实施例示出的切换处理流程图一，该流程包括下述步骤。
步骤401、基站向UE发送条件切换(CHO)命令，其中该CHO命令携带目标小区标识a、b、c和切换触发条件。
其中，该切换触发条件为小区1的参考信号接收功率(Reference Signal Receiving Power，RSRP)比服务小区的RSRP高3db。
需要说明的是，该切换触发条件仅仅是示意性地，可根据实际情况或设计需求进行设定或调整。
步骤402、UE收到该CHO命令后，测量目标小区a、b、c的参考信号接收功率(RSRP)，并检测是否满足该切换触发条件。
需要说明的是，步骤401中的切换触发条件还可以为：小区1的参考信号接收质量(Reference Signal Receiving Quality，RSRQ)比服务小区的RSRQ高3db。该切换触发条件仅仅是示意性地，小区1的RSRQ比服务小区的RSRQ高出的数值可根据实际情况或设计需求进行设定或调整。对应地，步骤402中，UE收到该CHO命令后，测量目标小区a、b、c的RSRQ， 并检测是否满足切换触发条件。
步骤403、在该UE基于该CHO命令执行切换前，基站向该UE发送切换命令，其中，该切换命令携带切换目标小区b和指示信息，该指示信息包括目标小区a可接入及目标小区c已被释放。
步骤404、该UE收到该切换命令后向该切换目标小区b进行切换。
步骤405、若该UE向该切换目标小区b切换失败，则优先向目标小区a进行切换或连接重建。
本实施例所述方案，在UE基于CHO命令进行切换前，若UE收到切换命令，则基于该切换命令向目标小区b进行切换；若UE向该目标小区b切换失败，且目标小区a可接入，则选择目标小区a进行切换或连接重建。
图5是根据一示例性实施例示出的切换处理流程图二，该流程包括下述步骤。
步骤501、基站向UE发送CHO命令，其中该CHO命令携带目标小区标识a、b、c、d和切换触发条件。
其中，该切换触发条件为小区1的参考信号RSRP比服务小区的RSRP高5db。
需要说明的是，该切换触发条件仅仅是示意性地，可根据实际情况或设计需求进行设定或调整。
步骤502、该UE收到该CHO命令后，测量目标小区a、b、c、d的RSRP并检测是否满足切换触发条件。
需要说明的是，步骤501中的切换触发条件还可以为：小区1的RSRQ比服务小区的RSRQ高5db。该切换触发条件仅仅是示意性地，小区1的RSRQ比服务小区的RSRQ高出的数值可根据实际情况或设计需求进行设定或调整。对应地，步骤502中，该UE收到该CHO命令后，测量目标小区a、b、c、d的RSRQ，并检测是否满足该切换触发条件。
步骤503、在该UE基于该CHO命令进行切换前，基站向该UE发送 切换命令，其中，该切换命令携带切换目标小区b和指示信息，该指示信息包括目标小区a和d可接入及时长信息500ms、目标小区c已被释放。
其中，该时长信息用于指示该UE能够接入第二小区的时间范围。
步骤504、UE收到该切换命令后向目标小区b进行切换，启动定时器。
步骤505、若UE向目标小区b切换失败，且目标小区a和目标小区d的定时器均没有超时，则优先向目标小区a或目标小区d进行切换或连接重建。
实际应用中，UE可选择向目标小区a进行切换或连接重建；UE还可选择向目标小区d进行切换或连接重建。具体选择目标小区a还是选择目标小区d由UE自行决定。
本实施例所述方案，在UE基于CHO命令进行切换前，若UE收到切换命令，则基于该切换命令向目标小区b进行切换；若UE向该目标小区b切换失败，且目标小区d和目标小区a的定时器都没有超时，则可任选目标小区d和目标小区a中的一个目标小区进行切换或连接重建。
图6是根据一示例性实施例示出的切换处理流程图三。该流程包括：
步骤601、基站向UE发送CHO命令，其中该CHO命令携带目标小区标识a、b、c、d和切换触发条件。
其中，该切换触发条件为小区1的参考信号RSRP比服务小区的RSRP高2db。
需要说明的是，所述切换触发条件仅仅是示意性地，可根据实际情况或设计需求进行设定或调整。
步骤602、UE收到该CHO命令后，测量目标小区a、b、c、d的RSRP，并检测是否满足切换触发条件。
需要说明的是，步骤601中的切换触发条件还可以为：小区1的RSRQ比服务小区的RSRQ高2db。该切换触发条件仅仅是示意性地，小区1的RSRQ比服务小区的RSRQ高出的数值可根据实际情况或设计需求进行设 定或调整。对应地，步骤602中，UE收到该CHO命令后，测量目标小区a、b、c、d的RSRQ，并检测是否满足该切换触发条件。
步骤603、在UE基于该CHO命令进行切换前，基站向该UE发送切换命令，其中，该切换命令携带切换目标小区b和指示信息，该指示信息包括目标小区a和d可接入、与目标小区a对应的时长信息为500ms、与目标小区d对应的时长信息为400ms、以及目标小区c已被释放。
其中，该时长信息用于指示该UE能够接入第二小区的时间范围。
步骤604、UE收到该切换命令后向该切换目标小区b进行切换，启动定时器。
步骤605、若UE向该目标小区b切换失败，目标小区d的定时器已经超时但目标小区a的定时器没有超时，则优先向目标小区a进行切换或连接重建。
本实施例所述方案，在UE基于CHO命令进行切换前，若UE收到切换命令，则基于该切换命令向目标小区b进行切换；若UE向该目标小区b切换失败，且目标小区d的定时器已经超时但目标小区a的定时器没有超时，则优先向目标小区a进行切换或连接重建。
图7是根据一示例性实施例示出的一种切换处理装置框图一。该切换处理装置应用于基站侧，参照图7，该装置包括确定单元10和发送单元20。
确定单元10，被配置为在切换命令中携带第一小区标识和至少一个第二小区标识；该第一小区标识所标识的第一小区为：切换的目标小区；该第二小区标识所标识的第二小区为：在UE切换至该第一小区失败后，该UE能够接入的小区；
发送单元20，被配置为将该切换命令发送至该UE。
作为一种实施方式，该切换命令中还携带有时长信息，其中，该时长信息用于指示该UE能够接入该第二小区的时间范围。
作为一种实施方式，该确定单元10，还被配置为：
根据该时长信息，为该第二小区配置定时器；
在该定时器超时时，释放供该UE接入该第二小区的资源。
作为一种实施方式，该发送单元20，被配置为：
在确定该UE未基于CHO命令执行切换前，将该切换命令发送至该UE。
上述方案中，该第二小区为该CHO命令指示的小区。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
实际应用中，上述确定单元10和发送单元20的具体结构均可由该切换处理装置或该切换处理装置所属基站中的中央处理器(CPU，Central Processing Unit)、微处理器(MCU，Micro Controller Unit)、数字信号处理器(DSP，Digital Signal Processing)或可编程逻辑器件(PLC，Programmable Logic Controller)等实现。
本实施例所述的切换处理装置可设置于基站侧。
本领域技术人员应当理解，本公开实施例的切换处理装置中各处理模块的功能，可参照前述应用于基站侧的切换处理方法的相关描述而理解，本公开实施例的切换处理装置中各处理模块，可通过实现本公开实施例所述的功能的模拟电路而实现，也可以通过执行本公开实施例所述的功能的软件在终端上的运行而实现。
本公开实施例所述的切换处理装置，能够使基站向UE发送用于指示切换至第一小区的切换命令时，在该切换命令中还携带有若UE切换至第一小区失败后该UE能够接入的第二小区标识的指示信息，便于UE在接入至第一小区失败后能够根据该指示信息快速选择出能接入的小区以恢复连接，能提高切换失败后恢复连接的成功率。
图8是根据一示例性实施例示出的一种切换处理装置框图二。该切换处理装置应用于用户终端侧；参照图8，该装置包括接收单元30和切换处 理单元40。
接收单元30，被配置为接收切换命令，该切换命令中携带第一小区标识和至少一个第二小区标识；
切换处理单元40，被配置为基于该切换命令，接入到该第一小区标识所标识的该第一小区；
该切换处理单元40，还被配置为在接入至该第一小区失败后，接入该第二小区标识所标识的第二小区。
作为一种实施方式，该切换命令中还携带有时长信息；
该切换处理单元40，被配置为：
在接入至该第一小区失败且在该时长信息所指示的时间范围内，接入该第二小区标识所标识的第二小区。
上述方案中，该装置还可包括：
计时单元50，被配置为：
根据该时长信息为该第二小区配置定时器；
基于该切换命令向该第一小区进行切换时，通过该定时器开始记时。
作为一种实施方式，该切换处理单元40，还被配置为：
从所有该第二小区中选择定时器未超时的第二小区，作为待接入的第二小区。
作为一种实施方式，该接收单元30，还被配置为接收CHO命令；该切换处理单元40，被配置为在该UE未基于该CHO命令进行切换前，基于该切换命令向该第一小区进行切换。
上述方案中，该第二小区为该CHO命令指示的小区。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
实际应用中，上述接收单元30、切换处理单元40和计时单元50的具体结构均可由该切换处理装置或该切换处理装置所属终端中的CPU、MCU、 DSP或PLC等实现。
本实施例所述的切换处理装置可设置于用户终端侧。
本领域技术人员应当理解，本公开实施例的切换处理装置中各处理模块的功能，可参照前述应用于用户终端侧的切换处理方法的相关描述而理解，本公开实施例的切换处理装置中各处理模块，可通过实现本公开实施例所述的功能的模拟电路而实现，也可以通过执行本公开实施例所述的功能的软件在终端上的运行而实现。
本公开实施例所述的切换处理装置，便于UE在接入至第一小区失败后，能够根据切换命令中还携带的若UE切换至第一小区失败后该UE能够接入的第二小区标识的指示信息，快速选择出能接入的小区以恢复连接，能提高切换失败后恢复连接的成功率。
图9是根据一示例性实施例示出的一种用于实现切换处理的装置800的框图。例如，装置800可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图9，装置800可以包括以下一个或多个组件：处理组件802，存储器804，电力组件806，多媒体组件808，音频组件810，输入/输出(Input/Output，I/O)的接口812，传感器组件814，以及通信组件816。
处理组件802通常控制装置800的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件802可以包括一个或多个处理器820来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件802可以包括一个或多个模块，便于处理组件802和其他组件之间的交互。例如，处理组件802可以包括多媒体模块，以方便多媒体组件808和处理组件802之间的交互。
存储器804被配置为存储各种类型的数据以支持在装置800的操作。这些数据的示例包括用于在装置800上操作的任何应用程序或方法的指令， 联系人数据，电话簿数据，消息，图片，视频等。存储器804可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(Static Random-Access Memory，SRAM)，电可擦除可编程只读存储器(Electrically-Erasable Programmable Read Only Memory，EEPROM)，可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)，可编程只读存储器(Programmable read-only memory，PROM)，只读存储器(Read Only Memory，ROM)，磁存储器，快闪存储器，磁盘或光盘。
电力组件806为装置800的各种组件提供电力。电力组件806可以包括电源管理系统，一个或多个电源，及其他与为装置800生成、管理和分配电力相关联的组件。
多媒体组件808包括在所述装置800和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(Liquid Crystal Display，LCD)和触摸面板(Touch Panel，TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件808包括一个前置摄像头和/或后置摄像头。当装置800处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件810被配置为输出和/或输入音频信号。例如，音频组件810包括一个麦克风(microphone，简称MIC)，当装置800处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器804或经由通信组件816 发送。在一些实施例中，音频组件810还包括一个扬声器，用于输出音频信号。
I/O接口812为处理组件802和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件814包括一个或多个传感器，用于为装置800提供各个方面的状态评估。例如，传感器组件814可以检测到装置800的打开/关闭状态，组件的相对定位，例如所述组件为装置800的显示器和小键盘，传感器组件814还可以检测装置800或装置800一个组件的位置改变，用户与装置800接触的存在或不存在，装置800方位或加速/减速和装置800的温度变化。传感器组件814可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件814还可以包括光传感器，如互补金属氧化物半导体(Complementary Metal Oxide Semiconductor，CMOS)或电荷耦合元件(Charge-coupled Device，CCD)图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件814还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件816被配置为便于装置800和其他设备之间有线或无线方式的通信。装置800可以接入基于通信标准的无线网络，如Wi-Fi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件816经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件816还包括近场通信(Near Field Communication，NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(Radio Frequency Identification，RFID)技术，红外数据协会(Infrared Data Association，IrDA)技术，超宽带(Ultra Wide Band，UWB)技术，蓝牙(Blue Tooth，BT)技术和其他技术来实现。
在示例性实施例中，装置800可以被一个或多个应用专用集成电路 (Application Specific Integrated Circuit，ASIC)、数字信号处理器(Digital Signal Processor，DSP)、数字信号处理设备(Digital Signal Processing Device，DSPD)、可编程逻辑器件(Programmable Logic Device，PLD)、现场可编程门阵列(Field Programmable Gate Array，FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述切换处理方法。
在示例性实施例中，还提供了一种包括可执行指令的非临时性的计算机存储介质，例如包括可执行指令的存储器804，上述可执行指令可由装置800的处理器820执行以完成上述方法。例如，所述非临时性的计算机存储介质可以是ROM、随机存取存储器(Random Access Memory，RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
图10是根据一示例性实施例示出的一种用于实现切换处理的装置900的框图。例如，装置900可以被提供为一服务器。参照图10，装置900包括处理组件922，其进一步包括一个或多个处理器，以及由存储器932所代表的存储器资源，用于存储可由处理组件922的执行的指令，例如应用程序。存储器932中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外，处理组件922被配置为执行指令，以执行上述切换处理方法。
装置900还可以包括一个电源组件926被配置为执行装置900的电源管理，一个有线或无线网络接口950被配置为将装置900连接到网络，和一个输入输出(I/O)接口958。装置900可以操作基于存储在存储器932的操作系统，例如Windows ServerTM，Mac OS XTM，UnixTM，LinuxTM，FreeBSDTM或类似。
本公开实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本申请旨在涵盖本发明的任何变型、用途或者适 应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明的真正范围和精神由下面的权利要求指出。
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。
工业实用性
本公开实施例的技术方案，在切换命令中携带第一小区标识和至少一个第二小区标识；所述第一小区标识所标识的第一小区为：切换的目标小区；所述第二小区标识所标识的第二小区为：在用户终端UE切换至所述第一小区失败后，所述UE能够接入的小区；将所述切换命令发送至所述UE如此，便于UE在切换失败后快速选择出能接入的小区以恢复连接，能提高切换失败后恢复连接的成功率。

Claims (24)

  1. 一种切换处理方法，包括：
    在切换命令中携带第一小区标识和至少一个第二小区标识；所述第一小区标识所标识的第一小区为：切换的目标小区；所述第二小区标识所标识的第二小区为：在用户终端UE切换至所述第一小区失败后，所述UE能够接入的小区；
    将所述切换命令发送至所述UE。
  2. 根据权利要求1所述的切换处理方法，其中，所述切换命令中还携带有时长信息，其中，所述时长信息用于指示所述UE能够接入所述第二小区的时间范围。
  3. 根据权利要求2所述的切换处理方法，其中，所述方法还包括：
    根据所述时长信息，为所述第二小区配置定时器；
    在所述定时器超时时，释放供所述UE接入所述第二小区的资源。
  4. 根据权利要求1至3任一项所述的切换处理方法，其中，所述将所述切换命令发送至所述UE，包括：
    在确定所述UE未基于条件切换CHO命令执行切换前，将所述切换命令发送至所述UE。
  5. 根据权利要求4所述的切换处理方法，其中，所述第二小区为所述CHO命令指示的小区。
  6. 一种切换处理方法，包括：
    接收切换命令，所述切换命令中携带第一小区标识和至少一个第二小区标识；
    基于所述切换命令，接入到所述第一小区标识所标识的所述第一小区；
    在接入至所述第一小区失败后，接入所述第二小区标识所标识的第二小区。
  7. 根据权利要求6所述的切换处理方法，其中，所述切换命令中还携带有时长信息；
    所述在接入至所述第一小区失败后，接入所述第二小区标识所标识的第二小区，包括：
    在接入至所述第一小区失败且在所述时长信息所指示的时间范围内，接入所述第二小区标识所标识的第二小区。
  8. 根据权利要求7所述的切换处理方法，其中，所述方法还包括：
    根据所述时长信息为所述第二小区配置定时器；
    基于所述切换命令向所述第一小区进行切换时，通过所述定时器对所述时间范围进行计时。
  9. 根据权利要求8所述的切换处理方法，其中，所述接入所述第二小区标识所标识的第二小区，包括：
    从所有所述第二小区中选择所述定时器未超时的第二小区进行接入。
  10. 根据权利要求6至9任一项所述的切换处理方法，其中，所述方法还包括：
    接收条件切换CHO命令；
    所述基于所述切换命令，接入到所述第一小区标识所标识的所述第一小区，包括：
    在未基于所述CHO命令进行切换前，基于所述切换命令向所述第一小区进行切换。
  11. 根据权利要求10所述的切换处理方法，其中，所述第二小区为所述CHO命令指示的小区。
  12. 一种切换处理装置，包括：
    确定单元，被配置为在切换命令中携带第一小区标识和至少一个第二小区标识；所述第一小区标识所标识的第一小区为：切换的目标小区；所述第二小区标识所标识的第二小区为：在用户终端UE切换至所述第一小区 失败后，所述UE能够接入的小区；
    发送单元，被配置为将所述切换命令发送至所述UE。
  13. 根据权利要求12所述的切换处理装置，其中，所述切换命令中还携带有时长信息，其中，所述时长信息用于指示所述UE能够接入所述第二小区的时间范围。
  14. 根据权利要求13所述的切换处理装置，其中，所述确定单元，还被配置为：
    根据所述时长信息，为所述第二小区配置定时器；
    在所述定时器超时时，释放供所述UE接入所述第二小区的资源。
  15. 根据权利要求12至14任一项所述的切换处理装置，其中，所述发送单元，被配置为：
    在确定所述UE未基于条件切换CHO命令执行切换前，将所述切换命令发送至所述UE。
  16. 根据权利要求15所述的切换处理方法，其中，所述第二小区为所述CHO命令指示的小区。
  17. 一种切换处理装置，包括：
    接收单元，被配置为接收切换命令，所述切换命令中携带第一小区标识和至少一个第二小区标识；
    切换处理单元，被配置为基于所述切换命令，接入到所述第一小区标识所标识的所述第一小区；
    所述切换处理单元，还被配置为在接入至所述第一小区失败后，接入所述第二小区标识所标识的第二小区。
  18. 根据权利要求17所述的切换处理装置，其中，所述切换命令中还携带有时长信息；
    所述切换处理单元，被配置为：
    在接入至所述第一小区失败且在所述时长信息所指示的时间范围内， 接入所述第二小区标识所标识的第二小区。
  19. 根据权利要求18所述的切换处理装置，其中，所述装置还包括：
    计时单元，被配置为：
    根据所述时长信息为所述第二小区配置定时器；
    基于所述切换命令向所述第一小区进行切换时，通过所述定时器对所述时间范围进行计时。
  20. 根据权利要求19所述的切换处理装置，其中，所述切换处理单元，还被配置为：
    从所有所述第二小区中选择所述定时器未超时的第二小区进行接入。
  21. 根据权利要求17至20任一项所述的切换处理装置，其中，所述接收单元，还被配置为接收条件切换CHO命令；
    所述切换处理单元，被配置为在所述UE未基于所述CHO命令进行切换前，基于所述切换命令向所述第一小区进行切换。
  22. 根据权利要求21所述的切换处理装置，其中，所述第二小区为所述CHO命令指示的小区。
  23. 一种切换处理装置，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：执行所述可执行指令时实现权利要求1至5任一项所述的切换处理方法。
  24. 一种切换处理装置，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：执行所述可执行指令时实现权利要求6至11任一项所述的切换处理方法。
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