WO2017045177A1 - 移动性管理的方法、用户设备和基站 - Google Patents

移动性管理的方法、用户设备和基站 Download PDF

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Publication number
WO2017045177A1
WO2017045177A1 PCT/CN2015/089799 CN2015089799W WO2017045177A1 WO 2017045177 A1 WO2017045177 A1 WO 2017045177A1 CN 2015089799 W CN2015089799 W CN 2015089799W WO 2017045177 A1 WO2017045177 A1 WO 2017045177A1
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WO
WIPO (PCT)
Prior art keywords
identifier
free
handover
network device
switch
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PCT/CN2015/089799
Other languages
English (en)
French (fr)
Inventor
李秉肇
权威
胡振兴
张戬
杨晓东
苗金华
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202010232776.1A priority Critical patent/CN111542072B/zh
Priority to EP15903867.8A priority patent/EP3337240B1/en
Priority to EP19205576.2A priority patent/EP3678419B1/en
Priority to PCT/CN2015/089799 priority patent/WO2017045177A1/zh
Priority to CN201580083140.2A priority patent/CN108029068B/zh
Publication of WO2017045177A1 publication Critical patent/WO2017045177A1/zh
Priority to US15/922,295 priority patent/US10470037B2/en
Priority to US16/582,941 priority patent/US11252558B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H04W8/245—Transfer of terminal data from a network towards a terminal
    • 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
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • 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
    • 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
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • 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
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control

Definitions

  • Embodiments of the present invention relate to the field of communications, and, more particularly, to a method, a user equipment, and a base station for mobility management.
  • Mobility management is an important task in wireless mobile communication systems.
  • mobility management may include mobile network handover, cell reselection, and the like of a User Equipment (UE).
  • UE User Equipment
  • the UE In the Long Term Evolution (LTE)/LTE Advanced Evolution (LTE-A) system of the 3rd Generation Partnership Project (3GPP), the UE is divided into idle (Idle) states and Connection state: The UE in the idle state is not connected to the base station, cannot transmit data, and performs cell reselection during the mobile process. If the UE in this state needs to send data, it must first go into the connected state.
  • the UE in the idle state can obtain the connection context and the dedicated identifier in the UE cell through the Radio Resource Control (RRC) connection establishment process, and enter the connected state; the UE in the connected state is connected to the base station, can send data, and is in the process of moving.
  • RRC Radio Resource Control
  • the connected state UE can enter the idle state through the RRC connection release process.
  • the typical process of the UE in the connected state may include the following key steps: the source base station, that is, the current serving base station of the UE, configures measurement parameters for the UE; the UE performs measurement and reports the measurement result to the source base station; the source base station sends the measurement result to the target base station.
  • the handover request is sent to the UE after the target base station confirms; and the UE accesses the target base station, obtains uplink synchronization, and sends a handover complete message.
  • Hetnet Heterogeneous network
  • CoMP Coordinated Multiple Points
  • the embodiment of the invention provides a data transmission method, which can solve the current handover process.
  • the waste of signaling and other wireless resources ensures the efficiency of data transmission.
  • a first aspect of the present invention provides a method for transmitting data, including: a user equipment UE in a connected state receiving a handover-free UE identifier from a network device, the handover-free UE identifier being used to uniquely identify a handover-free area
  • the handover-free area includes at least two cells; the UE enters the switch-free state after the activation condition is met, and in the switch-free state, the UE stores the connection-free UE identity and the connection context of the UE in the connected state, and The UE does not perform the handover procedure when moving within the handover-free area; after the UE determines that the deactivation condition is met, the handover-free UE identifier is sent to the network device; and the UE acquires the intra-cell dedicated UE identifier of the current serving cell from the network device. And exit the switch-free state.
  • the UE in the connected state can enter the switch-free state.
  • the UE can perform the handover process when moving within the switch-free area while retaining the connection context, and solves the problem that the UE frequently switches during the mobile process.
  • the UE can quickly connect with the network device only by acquiring the dedicated UE identifier in the cell, without completing the entire data access process, and ensuring the efficiency of data transmission.
  • the method further includes: the UE sending data to or receiving data from the network device according to the dedicated UE identifier in the cell and the connection context.
  • the activation condition includes at least one of the following conditions: the UE receives a command of the network device, where the command Instructing the UE to enter the switch-free state; and the UE does not perform data transmission with the network device within a predefined time.
  • the UE determines that the deactivation condition is met, including at least one of the following:
  • the UE receives the switch-free area identifier sent by the network device, where the switch-free area identifier is used to indicate the corresponding switch-free area, and the UE determines, according to the switch-free area identifier, that the UE moves beyond the UE.
  • Original switch-free area the switch-free area identifier
  • the UE monitors the paging channel, and receives the paging message sent by the network device on the paging channel according to the handover-free UE identifier, and the UE determines, according to the paging message, that the UE needs to be related to the network.
  • the device transmits data;
  • the UE moves between the cells in the handover-free area, and when the cell reselection is performed according to the cell reselection criterion, the target serving cell and the current serving cell of the UE are in different tracking areas;
  • the UE has uplink data to be sent.
  • the UE sends the handover-free UE identifier to the network device, where the UE sends a random access preamble to the network device.
  • the UE receives the transmission resource allocated by the network device and the UE identifier in the temporary cell; the UE uses the transmission resource to send the handover-free UE identifier to the network device; the UE acquires the current serving cell from the network device.
  • the intra-cell dedicated UE identifier includes: the UE receives the feedback-free handover UE identifier from the network device according to the UE identifier in the temporary cell; and the UE obtains the feedback-free handover UE identifier and the UE identifier in the temporary cell according to the feedback A dedicated UE identifier in the cell.
  • the UE when the UE determines that the deactivation condition is met, the UE receives the handover-free area identifier sent by the network device, where the handover-free area identifier is The UE is configured to indicate that the handover-free area is not required, and the UE determines, according to the handover-free area identifier, that the UE moves beyond the original handover-free area where the UE is located; the UE uses the transmission resource to send the handover-free UE identifier to The network device includes: the UE sends the switch-free UE identifier and the switch-free area identifier of the original switch-free area of the UE to the network device by using the transmission resource.
  • the UE obtains the intra-cell identifier according to the feedback-free handover UE identifier and the temporary intra-cell UE identifier.
  • Dedicated UE identifier including: the UE determines whether the UE with the handover-free UE identifier is the same as the UE-free UE identifier sent by the UE; if the same, the UE identifier in the temporary cell is used as a dedicated UE identifier in the cell; or, if different, repeats And the step of transmitting the preamble to the network device until receiving the feedback-free handover UE identifier from the network device, and determining again whether the feedback handover-free UE identifier is the same as the UE's handover-free UE identifier sent by the UE, until When the feedback-free handover UE identifier is the same as the handover-free UE identifier sent by the UE to the network device, the obtained intra-cell UE identifier is used as the dedicated UE identifier in the cell.
  • the method further includes: receiving, by the UE, a resource identifier index, where the resource identifier index is used to exit the UE After the switch-free state, the resource used by the network device for data transmission is received.
  • the implementation manner further includes: in the switch-free state, the UE stops using the secondary carrier.
  • a second aspect of the present invention provides a method for transmitting data, including: a network device transmitting, to a user equipment UE in a connected state, a handover-free UE identifier, where the handover-free UE identifier is used to uniquely identify one in a handover-free region
  • the handover-free state means that the UE does not perform the handover procedure when the UE moves within the handover-free area, and the handover-free region includes at least two cells; and the network device determines, after the UE enters the switch-free state according to the activation condition, stores the UE.
  • the network device receives the handover-free UE identity sent by the UE; and the network device sends the intra-cell dedicated UE identity of the current serving cell of the UE to the UE, so that the UE exits the switch-free state after acquiring the dedicated UE identity in the cell .
  • the network device does not need to frequently participate in the handover process during the UE mobile process, thereby saving the communication resources of the network device.
  • the network device needs to perform data communication with the UE, the UE can be searched for by the paging, so that the UE can quickly connect with the network device after acquiring the dedicated UE identifier in the cell, thereby ensuring the efficiency of data transmission.
  • the method further includes: the network device receiving data sent by the UE according to the dedicated UE identity and the connection context in the cell or sending data to the UE.
  • the activation condition includes at least one of the following conditions: the network device sends a command to the UE to indicate that the UE enters the switch-free state; and the network device is There is no data transmission with the UE for a predefined period of time.
  • the network device receives the The UE identifier includes: the network device receives the random access preamble sent by the UE; the network device sends the transmission resource and the UE identifier in the temporary cell to the UE; the network device receives the handover-free UE identifier sent by the UE by using the transmission resource; The device sends the intra-cell dedicated UE identifier to the UE, where the network device sends the feedback-free handover UE identifier, and the intra-cell dedicated UE identifier is obtained by the UE according to the feedback-free handover UE identifier and the temporary intra-cell UE identifier.
  • the method further includes: the network device sends a switch-free area identifier to the UE, where the switch-free area identifier is used to mark the corresponding switch-free area;
  • the receiving, by the network device, the handover-free UE identifier sent by the UE by using the transmission resource includes: receiving, by the network device, the handover-free UE identifier and the handover-free area identifier sent by the UE by using the transmission resource.
  • the network device further includes: the network device sends a resource identifier index to the UE, where the resource identifier index is used to allocate the UE to enter a connected state, and perform data transmission. Resources used.
  • a third aspect of the present invention provides a user equipment (UE), comprising: a receiving unit, configured to receive a handover-free UE identifier from a network device when the UE is in a connected state, where the handover-free UE identifier is used to uniquely be in a handover-free region Identifying a UE in a switch-free state, the switch-free area includes at least two cells, and a processing unit, configured to instruct the UE to enter a switch-free state after the activation condition is met, where the UE is in the switch-free area The handover process is not performed when the intra-mobile is not performed; the storage unit is configured to store, in the handover-free state of the UE, the handover-free UE identifier of the UE and a connection context of the UE in the connected state; and a sending unit, configured to After the UE meets the deactivation condition, the UE sends the handover-free UE identifier to the network device; the receiving unit is further configured to acquire,
  • the sending unit is further configured to send data to the network device according to the dedicated UE identifier and the connection context in the cell; or the receiving unit further And for receiving data from the network device according to the dedicated UE identifier and the connection context in the cell.
  • the activation condition includes: the receiving unit receives a command of the network device, where the command indicates The UE enters the switch-free state.
  • the user equipment further includes: a timing unit, configured to stop data transmission with the network device to the UE
  • the processing unit is further configured to determine whether the time period is greater than or equal to a predefined time, and when the time period is greater than or equal to the predefined time, determining that the activation condition is satisfied.
  • the UE meets a deactivation condition, at least one of the following: the receiving unit Receiving a switch-free area identifier sent by the network device, where the switch-free area identifier is used to indicate a corresponding switch-free area, and the processing unit determines, according to the switch-free area identifier, that the UE moves beyond the original location of the UE a handover-free area; the receiving unit monitors a paging channel, and receives a paging sent by the network device on the paging channel according to the handover-free UE identifier a message, the processing unit determines, according to the paging message, that the UE needs to transmit data with the network device; the processing unit instructs the UE to move between cells in the switch-free area and according to a cell reselection criterion When the cell is reselected, the processing unit determines that the target serving cell and the current serving cell of
  • the sending, by the sending unit, the sending the handover-free UE identifier to the network device includes: sending, by the sending unit, the network The device sends a random access preamble; the receiving unit receives the transmission resource allocated by the network device and the UE identifier in the temporary cell; and the sending unit uses the transmission resource to send the handover-free UE identifier to the network
  • the receiving unit obtains the intra-cell dedicated UE identifier of the current serving cell from the network device, and includes: the receiving unit receives the feedback-free handover UE from the network device according to the UE identifier in the temporary cell
  • the processing unit obtains the dedicated UE identifier in the cell according to the feedback-free handover UE identifier and the temporary intra-cell UE identifier.
  • the receiving unit when determining that the UE meets a deactivation condition, receives a handover-free area identifier sent by the network device, where The switching-free area identifier is used to indicate a corresponding switch-free area, and the processing unit determines, according to the switch-free area identifier, that the UE moves beyond the original switch-free area where the UE is located; the sending unit uses the transmission And the sending, by the sending unit, the handover-free UE identifier and the handover-free area identifier of the original switch-free area of the UE by using the transmission resource by using the transmission resource To the network device.
  • the processing unit determines whether the feedback-free handover UE identifier is the same as the UE's handover-free UE identifier sent by the UE, and if the same, the The UE identifier in the temporary cell is used as the dedicated UE identifier in the cell; or, if different, the processing unit controls the sending unit, the receiving unit, and the processing unit to repeatedly perform from transmitting the preamble to receiving feedback.
  • the step of switching the UE identity is not performed, and it is determined again whether the feedback-free handover UE identifier is the same as the UE's handover-free UE identifier sent by the UE, until the feedback handover-free UE identifier is sent by the UE
  • the switch-free UE identifiers of the network device are the same, the obtained intra-cell UE identity is used as the dedicated UE identifier in the cell.
  • the receiving unit is further configured to receive a resource identifier index from the network device, and use the resource And identifying, after the UE exits the switch-free state, receiving a resource used by the network device to perform data transmission.
  • the processing unit is further configured to: in the switch-free state, control the sending unit and the The receiving unit stops using the secondary carrier.
  • a fourth aspect of the present invention provides a network device, including: a sending unit, configured to send a handover-free UE identifier to a user equipment UE in a connected state, where the handover-free UE identifier is used to uniquely in a handover-free area Identifying a UE in a switch-free state, where the switch-free state refers to not performing a handover procedure when the UE moves within the switch-free area, the switch-free area includes at least two cells, and the processing unit is configured to activate according to Conditionally determining that the UE enters a switch-free state; the mobility anchor is configured to store a connection context of the UE after determining that the UE enters a switch-free state; and the receiving unit is configured to receive the switch-free switch sent by the UE And the sending unit is further configured to send the intra-cell dedicated UE identifier of the current serving cell of the UE to the UE, so that the UE exits the switch-free state after acquiring the dedicated UE identifie
  • the receiving unit is further configured to receive, according to the dedicated UE identifier in the cell and the connection context, data sent by the UE; or the sending unit further uses And transmitting data to the UE according to the dedicated UE identifier and the connection context in the cell.
  • the activation condition includes: the sending unit sends a command to the UE to indicate that the UE enters the switch-free switch status.
  • the method further includes: a timing unit, configured to stop, by the network device, data transmission with the UE
  • the processing unit is further configured to determine whether the time period is greater than or equal to a predefined time, and when the time period is greater than or equal to the predefined time, determining that the activation condition is satisfied.
  • the receiving unit by using the receiving unit, the handover-free identifier sent by the UE, Random access preamble; the sending unit sends a transmission resource to the UE And the UE identifier in the temporary cell; the receiving unit receives the switch-free UE identifier sent by the UE by using the transmission resource; and the sending, by the sending unit, the dedicated UE identifier in the cell, includes: sending The unit sends a feedback-free handover UE identity.
  • the sending unit sends a switch-free area identifier to the UE, where the switch-free area identifier is used to indicate a corresponding switch-free switch And receiving, by the receiving unit, the handover-free UE identifier sent by the UE by using the transmission resource, where the receiving unit receives the handover-free UE identifier sent by the UE by using the transmission resource, and the exemption Switch the area ID.
  • the sending unit sends the resource to the UE in the sixth possible implementation manner.
  • An identifier that is used to allocate resources used for data transmission after the UE enters the connected state.
  • the embodiment of the present invention provides a switch-free state, so that the UE in the state can perform the handover process when moving within the handover-free region while retaining the connection context, and solves the problem that the UE frequently moves during the mobile process. Switching problems, and can quickly connect with network devices when data needs to be transmitted, ensuring the efficiency of data transmission.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of another application scenario of an embodiment of the present invention.
  • FIG. 3 is a flow chart of a method of mobility management in accordance with one embodiment of the present invention.
  • FIG. 4 is a flow chart of a method of mobility management in accordance with another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (Evolutional Node). B, eNB or eNodeB), or a base station device in a future 5G network, etc., which is not limited by the present invention.
  • B Base Transceiver Station
  • NodeB base station
  • LTE Evolutional Node
  • the UE may communicate with one or more core networks through a Radio Access Network (RAN), and the UE may be referred to as an access terminal, a terminal device, or Subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • the UE may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or a wireless communication function.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • FIG. 1 is a schematic diagram 100 of an application scenario of an embodiment of the present invention. As shown in Figure 1, the response should The scenario 100 includes a core network 102, a switch-free device 110, a switch-free device 120, and a User Equipment (UE) 130.
  • UE User Equipment
  • the switch-free device 110 includes n base stations 112-1, 112-2...112-n and a mobility anchor 140, where n is a natural number greater than zero.
  • the switch-free device 120 includes m base stations 122-1, 122-2...122-m, and the mobility anchor 150 is integrated in the base station 122-1, where m is a natural number greater than zero.
  • the mobility anchor may be a logical entity that may be implemented by a separate server, such as the mobility anchor 140 shown in the hands-free device 110, or may be integrated into the base stations 122-1, 122-2, ... or 122-m. Any of the mobile anchor points 150 shown in the switch-free device 120, for example.
  • FIG. 2 is a schematic diagram 200 of another application scenario of an embodiment of the present invention.
  • the application scenario 200 can be implemented based on a Cloud Radio Access Network (Cloud RAN) technology.
  • Cloud RAN Cloud Radio Access Network
  • the radio frequency and the baseband of the base station of each cell are separated, and a part of the baseband of the cell is concentrated into one physical location, that is, the baseband pool, and each radio frequency is deployed at the remote end to become a radio frequency group.
  • This architecture enables cells that are concentrated in the same baseband pool to share hardware and information, facilitating coordination of resources.
  • the application scenario 200 includes a core network 202, a cloud radio access network 204, and a UE 230.
  • the cloud radio access network 204 includes a baseband pool 210, 220, and a radio frequency group 260.
  • the baseband pool 210 includes basebands 212-1, 212-2...212-n and a moving anchor 240, where n is a natural number greater than zero.
  • the baseband pool 220 includes m basebands 222-1, 222-2...222-m, and the mobility anchor 250 is integrated in the base station 222-1.
  • the mobility anchor can be a logical entity that can be implemented by a separate server, such as the mobility anchor 240 shown in the baseband pool 210; or integrated into the baseband 222-1, 222-2, ..., or 222-n. Any one of them, such as the mobile anchor point 250 shown in the baseband pool 220.
  • the cloud RAN-based network device can correspond to the baseband pool and the radio frequency group.
  • the baseband pool 210 and the radio frequency group 260 can serve as a switch-free device
  • the baseband pool 220 and the radio frequency group 260 can serve as another switch-free device.
  • a switch-free area may correspond to a cell corresponding to all basebands included in a baseband pool, and the concept of the switch-free area will be described in FIG. 3.
  • the network device may include the core network, the switch-free device, the mobility anchor point, the base station, the baseband, the radio frequency group, and the like in the application scenario shown in FIG. 1 and FIG. 2, and may also include the UE communicating with the UE through the network in other application scenarios.
  • Other devices that implement the functions of embodiments of the present invention.
  • FIG. 3 is a schematic flow chart of a method of mobility management according to an embodiment of the present invention. The method of Figure 3 is performed by a UE.
  • Step 310 The user equipment UE in the connected state receives the handover-free UE identifier from the network device.
  • the HFA-RNTI Handover Free Area-Radio Network Temporary Identifier
  • the HFA-RNTI is used to uniquely identify a UE in a switch-free state in a switch-free area. Includes at least two cells.
  • Step 320 The UE enters a switch-free state after the activation condition is met.
  • the UE stores the above-mentioned handover-free UE identity and stores the connection context of the UE in the connected state, and does not perform the handover process when moving within the handover-free region.
  • the foregoing activation condition includes: receiving a command sent by the network device, the command instructing the UE to enter a switch-free state.
  • the activation condition includes that the UE does not perform data transmission to the network device for a predefined period of time.
  • the UE may set a timer internally. After the UE receives the handover-free UE identifier HFA-RNTI, when the UE stops transmitting data with the network device, the timer starts to be timed. If the UE transmits data to the network device in the middle of timing, Then the timer stops counting and waits for the data transmission to complete and restarts timing. If the UE does not perform data transmission with the network device before the timer expires, the UE enters the switch-free state after the timer expires.
  • the timer stops timing, for example, set to an initial state or a timeout state.
  • Transmitting data by the UE and the network device includes transmitting data to and/or receiving data from the network device.
  • each switch-free area has a switch-free area identifier, so that the UE and/or the network device determine a switch-free area.
  • the unique switch-free area identifier may be unique within a local range, such as within a Tracking Area or within a PLMN, or may be unique worldwide.
  • the cell in the switch-free area broadcasts the switch-free area identifier of the switch-free area to which the cell belongs in the system information, so that the UE can determine the current switch-free area after receiving the broadcast of the current serving cell. For example, when the UE enters the switch-free state, it receives the broadcast of the serving cell at that time, and stores the switch-free area identifier of the switch-free area to which the cell belongs. The UE determines whether the mobile crosses the switch-free area according to the switch-free area identifier broadcasted by the current serving cell and the switch-free area identifier stored by the UE.
  • the serving cell in the switch-free state, when the UE moves within the switch-free area, the serving cell may be replaced according to the measurement, and the network device is not notified.
  • the cell reselection is performed according to the cell reselection criterion, that is, the UE can determine the target serving cell by itself without notifying the network device.
  • the UE found When a cell with better signal quality or higher strength can be used as the target serving cell.
  • the network device registers its Tracking Area. For example, the UE may send its current connected state serving cell to the network device and receive the tracking area allocated by the network device accordingly.
  • the UE listens to the paging channel in the switch-free state, and receives the paging message of the network device for itself according to the handover-free UE identity HFA-RNTI. For example, when the UE in the switch-free state needs to be paged, the network device performs paging in all cells in the switch-free area where the UE is located. The UE learns the paging of the network device by listening to the paging channel.
  • the UE may obtain a paging message and determine whether it is a paging to itself according to the UE identifier carried in the paging message, and the UE identifier may include an intra-cell UE identifier of the UE in the connected state, for example, a cell wireless network temporary identifier.
  • C-RNTI Cell-Radio Network Tempory Identity
  • HFA-RNTI Handover-free UE identifier
  • the UE determines Whether it is the same as its own handover-free UE identity HFA-RNTI, if it is the same, it considers itself to be paged.
  • the network device paging the UE may be that it needs to perform data transmission with the UE, or another UE calls the UE.
  • Stopping the secondary carrier usage includes deleting the secondary carrier context, or retaining the secondary carrier context but stopping listening to the secondary carrier downlink channel.
  • the UE maintains paging monitoring for the primary carrier.
  • the UE may enter the switch-free state after the activation condition is met according to the UE identity in the received handover-free area.
  • the UE stores the handover-free UE identifier and the connection context of the UE in the connected state, and the UE does not perform a handover procedure when moving within the handover-free region.
  • Step 330 After determining that the deactivation condition is met, the UE sends the handover-free UE identifier to the network device.
  • the UE determines that satisfying the deactivation condition comprises at least one of the following.
  • the UE receives the switch-free area identifier sent by the network device, where the switch-free area identifier is used to indicate the corresponding switch-free area, and the UE determines, according to the switch-free area identifier, that the UE moves beyond the original switch-free area where the UE is located. .
  • the UE monitors the paging channel, and receives a paging message sent by the network device on the paging channel according to the handover-free UE identifier, and the UE determines, according to the paging message, that the UE needs to be
  • the network device transmits data.
  • the target serving cell and the current serving cell of the UE are in different tracking areas. as well as
  • the UE has uplink data to be sent.
  • the UE sends the handover-free UE identifier to the network device, including some or all of the following steps, and the present invention preferably includes all the following steps.
  • Step 330-1 The UE sends a random access preamble to the network device, requesting the network device to allocate the transmission resource and the intra-cell dedicated UE identifier of the current serving cell to the UE.
  • the preamble is a common resource, there may be several UEs that use the same preamble to send a request to the network device. Therefore, after receiving the preamble, the network device cannot identify which UE is specifically transmitting the preamble.
  • Step 330-2 The UE receives the transmission resource allocated by the network device and the UE identifier in the temporary cell. For example, the UE may receive a resource allocation command from the network device, where the command may be used to notify the UE of available uplink transmission resources and simultaneously carry the allocated temporary intra-cell UE indication.
  • the temporary UE identifier in the cell needs to be further verified to be the intra-cell UE identifier of the UE.
  • the uplink transmission resource may be a time domain and/or a frequency domain resource.
  • the UE uses the transmission resource allocated by the network device to transmit the handover-free UE identifier carried by the UE to the network device.
  • the UE may send the handover-free UE identifier carried by the UE to the base station through MAC signaling.
  • the UE may indicate that the uplink data packet sent by the UE carries the handover-free UE identifier of the UE by including the logical channel identifier in the transmission resource.
  • step 330-3 The method may be: the UE sends the switch-free UE identifier and the switch-free area identifier of the switch-free area where the UE is currently located to the network device by using the transmission resource.
  • the UE may send the switch-free UE identifier and the original switch-free area identifier carried by the UE to the current network device by using an RRC message.
  • Step 340 The UE receives, from the network device, a dedicated UE identifier of the current serving cell, for example, a C-RNTI, and exits the switch-free state after receiving the dedicated UE identifier in the cell.
  • a dedicated UE identifier of the current serving cell for example, a C-RNTI
  • the UE may store the handover-free UE identifier and the handover-free area identifier in the switch-free state, and the UE needs to The handover-free UE identifier or the handover-free UE identifier and the handover-free area identifier acquire the dedicated UE identifier in the cell.
  • Step 340 may in turn include some or all of the following steps, and the present invention preferably includes all of the following steps.
  • Step 340-1 The UE receives the feedback handover-free UE identifier from the network device according to the received UE identity in the temporary cell.
  • Step 340-2 The UE obtains the dedicated UE identifier in the cell according to the feedback-free handover UE identifier and the UE identifier in the temporary cell.
  • the UE determines whether the feedback-free handover UE identifier is the same as the handover-free UE identifier sent by the UE. If they are the same, the UE uses the UE identifier in the temporary cell as its own intra-cell dedicated UE identifier; or, if different, repeats step 330-1, step 330-2, step 330-3 to step 340-1 until received.
  • the UE identifier in the temporary cell obtained this time is used as the dedicated UE identifier in the intra-cell.
  • the UE may further receive, by the network device, a resource identifier index, where the resource identifier index is used to receive, when the UE exits the switch-free state, a resource used by the network device to perform data transmission.
  • the resource identification index may be received in step 330-3 or 340-1.
  • This resource may include HARQ feedback resources, CSI feedback resources, and the like.
  • the UE may receive the resource identifier index and specific resource information corresponding information before step 340. For example, in the connected state, the UE may receive the resource identification index and corresponding information through a dedicated message, such as an RRC reconfiguration message. Or in the switch-free state, the UE may obtain the resource identifier index and the corresponding information by using a broadcast message.
  • the UE sends the handover-free UE identity carried in the switch-free state to the network device, and receives the intra-cell dedicated UE identity allocated by the network device for the UE from the network device. After receiving the dedicated UE identity in the cell, the UE exits the switch-free state.
  • the method 300 for mobility management further includes the following steps:
  • Step 350 The UE sends data to or receives data from the network device according to the intra-cell dedicated UE identifier received in step 330 and the connection context stored by the UE.
  • the UE in the connected state can enter the switch-free state.
  • the UE can perform the handover process when moving within the switch-free area while retaining the connection context, and solves the problem that the UE frequently switches during the mobile process.
  • the UE can quickly connect with the network device only by acquiring the dedicated UE identifier in the cell, without completing the entire data access process, and ensuring the efficiency of data transmission.
  • FIG. 4 is a schematic flow chart of a method of mobility management in accordance with one embodiment of the present invention. The method of Figure 4 is performed by a network device.
  • Step 410 The network device sends a handover-free UE identifier to the user equipment UE in the connected state, for example, HFA-RNTI (Handover Free Area-Radio Network Temporary Identifier), and the handover-free UE identifier is used in A UE that uniquely identifies a switch-free state in a switch-free area, where the switch-free state refers to that the UE does not perform a handover procedure when moving within the switch-free area, and the switch-free area includes at least two cells.
  • HFA-RNTI Handover Free Area-Radio Network Temporary Identifier
  • Step 420 After determining, by the network device, that the UE enters a switch-free state, the network device stores a connection context of the UE.
  • the foregoing activation condition includes: the network device sends a command to the UE, where the command instructs the UE to enter the switch-free state.
  • the activation condition includes that the network device does not perform data transmission with the UE for a predefined period of time.
  • a timer may be set in the network device. After the handover-free UE identifier HFA-RNTI is sent to the UE, when the network device stops transmitting data with the UE, the timer starts to be timed. If the network device is in the middle of the timing, between the network device and the UE. When data transmission is performed, the timer stops counting and waits for the data transmission to complete and restarts timing. If no data transmission is performed before the timer expires, after the timer expires, the network device determines that the UE enters the switch-free state. The network device stopping transmitting data with the UE includes transmitting data to and/or receiving data from the UE.
  • Each switch-free area has a switch-free area identifier so that the UE and/or the network device uniquely determines a switch-free area.
  • the network device After determining, by the network device, that the UE enters the switch-free state according to the activation condition, the network device stores the connection context of the UE. For example, the radio resource configuration information of the UE is saved, and the connection between the network device and the core network for the UE is reserved.
  • the network device when the network device needs to page the UE in the switch-free state, determine the switch-free area where the UE is located, and the network device sends a paging message in all cells of the switch-free area, where the paging message is Carrying the handover-free UE identifier for the UE to determine whether it is paging itself.
  • the network device paging the UE may have its downlink data to be sent to the UE, or another UE may call the UE.
  • Step 430 The network device receives the handover-free UE identifier sent by the UE.
  • the network device receives the handover-free UE identifier sent by the UE after the deactivation condition is met.
  • the deactivation condition has been described in step 330 and will not be described here.
  • the network device receives the switch-free identifier sent by the UE, including some or all of the following steps, and the present invention preferably includes all the following steps.
  • Step 430-1 the network device receives the random access preamble sent by the UE.
  • the preamble requests the network device to allocate a transmission resource and a dedicated UE identity within the cell. Since the preamble is a common resource, there may be several UEs that use the same preamble to send a request to the network device. Therefore, after receiving the preamble, the network device cannot identify which UE transmits the preamble.
  • the network device sends the transmission resource and the UE identifier in the temporary cell to the UE. Because the network device cannot determine the UE that requests the transmission resource and the UE identity in the cell, the network device sends the transmission resource and the UE identifier in the random cell to the UE according to the received UE identifier of the time point at which the UE sends the preamble, so that all The UE using the preamble can receive the transmission resource and the UE identification information in the random cell.
  • the UE identifier may include a dedicated UE identifier and a handover-free UE identifier in the cell.
  • Step 430-3 The network device receives the handover-free UE identifier sent by the UE by using the transmission resource. Since in step 430-2, the network device may send the transmission resource and the temporary intra-cell UE identity to the multiple UEs, in step 430-3, the network device may receive the handover-free UE identity sent by the multiple UEs. Optionally, the network device may further receive the switch-free UE identifier and the switch-free area identifier that are sent by the UE by using the transmission resource.
  • Step 440 The network device sends the intra-cell dedicated UE identifier of the current serving cell of the UE to the UE, so that the UE exits the switch-free state after receiving the dedicated UE identifier in the cell.
  • the network device sends the feedback-free handover UE identity.
  • the network device randomly selects one of the plurality of handover-free UE identifiers received as feedback-free handover UE identifier.
  • the intra-cell dedicated UE identifier of the UE is obtained according to the feedback-free handover UE identifier and the temporary intra-cell UE identifier.
  • the network device may further send a resource identifier index to the UE, where the resource identifier index is used to receive resources used by the network device for data transmission after the UE exits the switch-free state.
  • the resource identification index can be received in step 430-3 or 440.
  • This resource may include HARQ feedback resources, CSI feedback resources, and the like.
  • the network device may receive the resource identifier index and the specific resource information corresponding information before step 430. For example, in the connected state, the network device may send the resource identification index and corresponding information through a dedicated message, such as an RRC reconfiguration message. Or in the switch-free state, the network device sends the resource identifier index and the corresponding information through a broadcast message.
  • the network device receives the switch-free UE identity carried in the switch-free state from the UE, or receives the switch-free UE identity and the switch-free zone identifier, and allocates the intra-cell dedicated UE identifier to the UE.
  • the method 400 for mobility management further includes the step 450:
  • Step 450 The network device receives data sent by the UE according to the dedicated UE identity and the connection context in the cell or sends data to the UE.
  • the network device does not need to frequently participate in the handover process during the UE mobile process, thereby saving the communication resources of the network device.
  • the network device needs to perform data communication with the UE, the UE can be searched for by the paging, so that the UE can quickly connect with the network device after acquiring the dedicated UE identifier in the cell, thereby ensuring the efficiency of data transmission.
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment shown in FIG. 5 includes a receiving unit 510, a processing unit 520, a transmitting unit 530, a storage unit 540, and a timing unit 550.
  • the receiving unit 510 is configured to receive a handover-free UE identifier, such as an HFA-RNTI (Handover Free Area-Radio Network Temporary Identifier), in the connected state, where the handover-free UE identifier is used in A UE that uniquely identifies a switch-free state within a switch-free area.
  • a handover-free UE identifier such as an HFA-RNTI (Handover Free Area-Radio Network Temporary Identifier)
  • HFA-RNTI Heandover Free Area-Radio Network Temporary Identifier
  • the switch free area includes at least two cells.
  • the processing unit 520 is configured to switch the UE into the switch-free state after the activation condition is met.
  • the UE stores the connection-free UE identifier and the connection context of the UE in the connected state, and does not perform the handover when moving within the handover-free region. Process.
  • the storage unit 530 is configured to store, in a switch-free state of the UE, a handover-free UE identifier of the UE, and a connection context of the UE in a connected state.
  • the processing unit 520 is further configured to determine whether the UE meets a deactivation condition.
  • the receiving unit 510 is further configured to receive, from the network device, an intra-cell dedicated UE identifier of the current serving cell.
  • the processing unit 520 is further configured to: after receiving the dedicated UE identifier in the cell, the receiving unit 510 exits the UE from the switch-free state.
  • the sending unit 540 is further configured to send data to the network device according to the dedicated UE identifier in the cell and the connection context of the stored UE.
  • the activation condition includes: the receiving unit 510 receives a command of the network device, where the command instructs the UE to enter the switch-free state.
  • the user equipment further includes:
  • the timing unit 550 is configured to time the time period during which the UE stops data transmission with the network device;
  • the processing unit 520 is further configured to determine whether the time period of the timing is greater than or equal to the predefined time. When the time period is greater than or equal to the predefined time, the activation condition is determined to be satisfied.
  • the processing unit 520 determines whether the UE meets the deactivation condition, and includes at least one of the following.
  • the receiving unit 510 receives the switch-free area identifier sent by the network device, where the switch-free area identifier is used to indicate a corresponding switch-free area, and the processing unit determines, according to the switch-free area identifier, that the UE moves beyond the UE The original switch-free area.
  • the receiving unit 510 monitors the paging channel, and receives a paging message sent by the network device on the paging channel according to the handover-free UE identifier, and the processing unit determines, according to the paging message, that the UE needs to be The network device transmits data.
  • the processing unit 520 determines that the target serving cell and the current serving cell of the UE are in different tracking. Area.
  • the sending unit 530 has uplink data to be transmitted.
  • the sending unit 540 is configured to send the handover-free UE identifier to the network device after the UE determines that the deactivation condition is met.
  • processing unit 520 is further configured to control the receiving unit 510 and the sending unit 540 to stop using the secondary carrier in the switch-free state.
  • the sending unit sends the switch-free UE identifier to the network device, including:
  • the sending unit 540 sends a preamble to the network device, requesting the network device to allocate the transmission resource and the dedicated UE identity in the cell to the UE.
  • the receiving unit 510 receives the transmission resource allocated by the network device and the UE identifier in the temporary cell.
  • the sending unit 540 sends the switch-free UE identifier to the network device by using the transmission resource.
  • the processing unit 520 determines that the deactivation condition is met, the receiving unit 510 receives the switch-free area identifier sent by the network device, where the switch-free area identifier is used to indicate the corresponding switch-free handover.
  • the processing unit determines, according to the switch-free area identifier, that the UE moves beyond the original switch-free area where the UE is located;
  • the sending unit 540 by using the transmission resource, to send the handover-free UE identifier to the network device, includes:
  • the sending unit 540 sends the switch-free UE identifier and the switch-free area identifier of the original switch-free area of the UE to the network device by using the transmission resource.
  • the receiving unit 510 acquires, from the network device, the intra-cell dedicated UE identifier of the current serving cell, including:
  • the receiving unit 510 receives the feedback handover-free UE identifier from the network device according to the UE identity in the temporary cell.
  • the processing unit 520 obtains the intra-cell dedicated UE identifier according to the feedback-free handover UE identifier and the temporary intra-cell UE identifier.
  • the processing unit 520 obtains the intra-cell dedicated UE identifier according to the feedback-free handover UE identifier and the temporary intra-cell UE identifier, including:
  • the processing unit 520 determines whether the feedback-free handover UE identifier is the same as the UE-free handover UE identifier sent by the UE, and if the same, the temporary intra-cell UE identifier is used as the intra-cell dedicated UE identifier; or, if different, the processing unit 520 controls to send
  • the unit 540 and the receiving unit 510 repeatedly perform all the steps from the sending of the preamble to the handover-free UE identification of the received feedback, and determine again whether the feedback switch-free UE identifier is the same as the UE's handover-free UE identifier sent by the UE until feedback
  • the obtained intra-cell UE identifier is used as the intra-cell dedicated UE identifier.
  • the receiving unit 510 is further configured to receive the resource identifier index from the network device, and use the resource identifier index to receive the resource used by the network device for data transmission after the UE exits the switch-free state.
  • the foregoing resources may be HARQ feedback resources and/or CSI feedback resources.
  • the receiving unit 510 may be implemented by a receiver
  • the processing unit 520 may be implemented by a processor
  • the storage unit 530 may be implemented by a processor
  • the sending unit 540 may be implemented by a transmitter.
  • user equipment 600 can include a processor 610, a receiver 620, a transmitter 630, and a memory 640.
  • the memory 640 can be used to store code and the like when the processor 610 executes.
  • bus system 660 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • the network device 700 shown in FIG. 7 includes a mobility anchor point 710, a transmitting unit 720, a processing unit 730, a receiving unit 740, and a timing unit 750.
  • the sending unit 720 is configured to send, to the user equipment UE in the connected state, a handover-free UE identifier, where the handover-free UE identifier is used to uniquely identify a handover-free UE in a handover-free region, where the handover-free state is
  • the handover process is not performed when the UE moves within the switch-free area, and the switch-free area includes at least two cells. The contents of the switch-free state and the switch-free area are described in steps 310 and 320 of FIG. 3 and will not be further described herein.
  • the processing unit 730 is configured to determine, according to the activation condition, that the UE enters a switch-free state.
  • the mobility anchor 710 is configured to store a connection context of the UE after determining that the UE enters a switch-free state.
  • the receiving unit 740 is configured to receive the handover-free UE identifier sent by the UE.
  • the sending unit 720 is further configured to send, to the UE, an intra-cell dedicated UE identifier of the current serving cell of the UE, so that the UE exits the switch-free state after acquiring the dedicated UE identifier in the cell.
  • the activation condition includes: the sending unit 720 sends a command to the UE, where the command instructs the UE to enter a switch-free state.
  • the network device 700 further includes:
  • the timing unit 750 is configured to time the time period in which the transmitting unit 720 and the receiving unit 740 stop data transmission with the UE.
  • Data transmission includes transmitting unit 720 transmitting data to the UE and/or receiving unit 740 receiving data from the UE.
  • the processing unit 730 is further configured to determine whether the time period recorded by the timing unit is greater than or equal to a predefined time. When the time period is greater than or equal to the predefined time, it is determined that the activation condition is satisfied, so that the UE enters the switch-free state.
  • the mobility anchor 710 is further configured to store the connection context of the UE after the UE enters the switch-free state.
  • the sending unit 720 is further configured to receive data sent by the UE or send data to the UE according to the dedicated UE identifier and the connection context in the cell.
  • the receiving unit 740 receives the switch-free identifier sent by the UE, including:
  • the receiving unit 740 receives the random access preamble sent by the UE.
  • the transmitting unit 720 transmits the transmission resource and the temporary intra-cell UE identity to the UE.
  • the receiving unit 740 receives the handover-free UE identity transmitted by the UE by using the transmission resource.
  • the intra-cell dedicated UE identifier is used to enable the UE to exit the switch-free state.
  • Sending unit 720 Sending the intra-cell dedicated UE identity to the UE includes:
  • the sending unit 720 sends the feedback-free handover UE identifier, where the UE-specific UE identifier is obtained by the UE according to the feedback-free handover UE identifier and the temporary intra-cell UE identifier.
  • the content of the network device 700 obtaining the intra-cell dedicated UE identifier according to the handover-free UE identifier is the same as that in step 430 and step 440 of FIG. 4, and is not further described herein.
  • each switch-free area corresponds to a switch-free area identifier
  • the processing unit 730 uniquely determines a switch-free area according to the switch-free area identifier.
  • the receiving unit 740 receives the handover-free UE identifier sent by the UE by using the transmission resource, and the receiving unit 740 receives the handover-free UE identifier and the handover-free handover area identifier that are sent by the UE by using the transmission resource.
  • the sending unit 720 sends a resource identifier index to the UE, where the resource identifier index is used to allocate resources used for data transmission after the UE enters the connected state.
  • the resource identification index has been described after step 440 of FIG. 4 and will not be further described herein.
  • the method further includes:
  • the processing unit 730 sends a configuration request to the mobility anchor 710, requesting the mobility anchor to configure the UE to switch the UE identifier;
  • Processing unit 730 receives the configured switch-free UE identity.
  • the sending unit 720 can send the handover-free UE identifier to the UE.
  • the method further includes:
  • the processing unit 730 sends a connection context request message to the mobility anchor point
  • Processing unit 730 receives the connection context sent by the mobility anchor.
  • the mobility anchor 710 may perform the functions of the processing unit 730, or the processing unit 730 may complete the functionality of the mobility anchor 710. That is, the functions of the mobile anchor point 710 and the processing unit 730 may be separately performed by the two units, or may be independently performed by one of the units.
  • the network device does not need to frequently participate in the handover process during the UE mobile process, thereby saving the communication resources of the network device.
  • the network device needs to perform data communication with the UE, the UE can be searched for by the paging, so that the UE can quickly connect with the network device after acquiring the dedicated UE identifier in the cell, thereby ensuring the efficiency of data transmission.
  • the sending unit 720 can be implemented by a transmitter, and the processing unit
  • the element 730 can be implemented by a processor
  • the receiving unit 740 can be implemented by a receiver
  • the timing unit 750 can be implemented by a timer.
  • FIG. 8 is a schematic structural diagram of a network device in the foregoing embodiment.
  • network device 800 can include base station 801 and mobility anchor 802.
  • Base station 801 can include a processor 810, a receiver 820, a transmitter 830, a memory 840, and a timer 850.
  • the memory 840 can be used to store code and the like when the processor 810 is executed.
  • the various components in base station 801 are coupled together by a bus system 860, which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • FIG. 9 is another schematic structural diagram of the network device in the above embodiment, and FIG. 9 is described in conjunction with FIG. 1.
  • base station 900 can include a processor 910, a receiver 920, a transmitter 930, a memory 940, a timer 950, and a mobility anchor 960.
  • the memory 940 can be used to store code and the like when the processor 910 is executed.
  • the various components in base station 900 are coupled together by a bus system 980, which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • FIG. 10 is another schematic structural diagram of the network device in the foregoing embodiment.
  • the network device 1000 includes a baseband 1001, a radio frequency group 1002, and a mobility anchor 1003.
  • the baseband 1001 can include a processor 1010, a memory 1020, and a timer 1030.
  • the memory 1020 can be used to store code and the like when the processor 1010 is executed.
  • the radio frequency group 1002 can include a receiver 1040 and a transmitter 1050.
  • the various components in baseband 1001 are coupled together by a bus system 1060 that includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • FIG. 11 is another schematic structural diagram of the network device of the above embodiment.
  • the network device 1100 includes a baseband 1101 and a radio frequency group 1102.
  • the baseband 1101 can include a processor 1110, a memory 1120, a timer 1130, and a mobility anchor 1140.
  • the memory 1120 can be used to store code and the like when the processor 1110 is executed.
  • the various components in baseband 1101 are coupled together by a bus system 1160, which includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • the radio frequency group 1102 can include a transmitter 1160 and a receiver 1150.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • the steps of the foregoing method embodiments may be through an integrated logic circuit or hardware of hardware in the processor.
  • the instructions in the form of pieces are completed.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and schematic diagrams disclosed in the embodiments of the present invention may be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

一种移动性管理的方法、用户设备和网络设备。该移动性管理的方法包括：处于连接态的用户设备UE从网络设备接收免切换UE标识，该免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，免切换区域包括至少两个小区；UE在满足激活条件后进入免切换状态，在所述免切换状态下，UE存储所述免切换UE标识和UE在连接态的连接上下文，且UE在免切换区域内移动时不执行切换流程；在UE确定满足去激活条件后，所述UE向网络设备发送所述免切换UE标识；以及UE从网络设备获取当前服务小区的小区内专用UE标识，并退出所述免切换状态。

Description

移动性管理的方法、用户设备和基站 技术领域
本发明实施例涉及通信领域，并且更具体地，涉及一种移动性管理的方法、用户设备和基站。
背景技术
移动性管理是无线移动通信系统中重要的工作。通常，移动性管理可以包括用户设备(User Equipment，UE)的移动网络切换、小区重选等。
在第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)的长期演进(Long Term Evolution，LTE)/LTE高级演进(LTE-advanced，LTE-A)系统中，UE分为空闲(Idle)态和连接态：处于空闲态的UE和基站没有连接，不能发送数据，并在移动过程中执行小区重选。如果该状态的UE需要发送数据则首先要转入连接态。空闲态的UE可通过无线资源控制(Radio Resource Control，RRC)连接建立过程获得连接上下文和UE小区内专用标识后进入连接态；处于连接态的UE与基站连接，可以发送数据，并在移动过程中执行切换(handover)，连接态UE可通过RRC连接释放过程进入空闲态。
处在连接态的UE进行切换的典型流程可能包括如下关键步骤：源基站，即UE当前的服务基站，为UE配置测量参数；UE进行测量并向源基站上报测量结果；源基站向目标基站发送切换请求，并在目标基站确认后向UE发送切换命令；以及UE接入目标基站，获得上行同步，并发送切换完成消息等。
在未来的网络演进中，各种布网形态越来越多，比如异构网络(Heterogeneous network,Hetnet)，多点协作(Coordinated Multiple Points,CoMP)传输，小小区组网，小小区密集组网等。这些布网形态对UE的移动性管理提出了新的挑战，如果仍沿用当前切换的流程，UE需要持续进行测量和上报，且带来大量的切换信令开销，浪费无线资源。
发明内容
本发明实施例提供了一种数据传输的方法，能够解决当前切换流程中的 信令及其他无线资源的浪费问题，保证数据传输的效率。
本发明的第一方面，提供一种传输数据的方法，包括：处于连接态的用户设备UE从网络设备接收免切换UE标识，该免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，免切换区域包括至少两个小区；UE在满足激活条件后进入免切换状态，在免切换状态下，UE存储免切换UE标识和UE在所述连接态的连接上下文，且UE在所述免切换区域内移动时不执行切换流程；在UE确定满足去激活条件后，向网络设备发送免切换UE标识；和UE从所述网络设备获取当前服务小区的小区内专用UE标识，并退出所述免切换状态。
通过本实施例的移动性管理方法，处于连接态的UE能够进入免切换状态。在免切换状态，UE可在保留连接上下文的情况下，在免切换区域内移动时不执行切换过程，解决了UE在移动过程中频繁切换的问题。同时，UE在需要传输数据时能仅通过获取小区内专用UE标识迅速与网络设备连接，而无需完成整个数据接入过程，保证了数据传输的效率。
结合第一方面，在第一种可能的实现方式中，还包括：UE根据小区内专用UE标识及所述连接上下文，向网络设备发送数据或从所述网络设备接收数据。
结合第一方面或第一方面的第一种可能的实现方式，在第二种可能的实现方式中，激活条件包括以下条件中的至少一个：UE接收到所述网络设备的命令，所述命令指示所述UE进入所述免切换状态；和所述UE在预定义的时间内没有与所述网络设备进行数据传输。
结合第一方面至第一方面的第二种可能的实现方式中的任意一种，在第三种可能的实现方式中，UE确定满足去激活条件包括以下中的至少一个：
一、UE接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述UE根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域；
二、UE监听寻呼信道，并根据所述免切换UE标识接收所述网络设备在所述寻呼信道上发送的寻呼消息，所述UE根据寻呼消息判断所述UE需要与所述网络设备传输数据；
三、UE在所述免切换区域内的小区之间移动，根据小区重选准则进行小区重选时，目标服务小区与所述UE当前服务小区处于不同的跟踪区；和
四、UE有上行数据需要发送。
结合第一方面的第三种可能的实现方式，在第四种可能的实现方式中，UE向所述网络设备发送所述免切换UE标识，包括：UE向所述网络设备发送随机接入前导码；UE接收所述网络设备分配的传输资源和临时小区内UE标识；UE利用所述传输资源，将所述免切换UE标识发送给所述网络设备；UE从所述网络设备获取当前服务小区的小区内专用UE标识包括：UE根据所述临时小区内UE标识，从所述网络设备接收反馈的免切换UE标识；UE根据所述反馈的免切换UE标识和所述临时小区内UE标识获得所述小区内专用UE标识。
结合第一方面的第四种可能的实现方式，在第五种可能的实现方式中，当UE确定满足去激活条件包括UE接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述UE根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域时；UE利用传输资源，将所述免切换UE标识发送给所述网络设备包括：UE利用传输资源，将免切换UE标识和UE原免切换区域的免切换区域标识发送给所述网络设备。
结合第一方面的第四种可能的实现方式或第五种可能的实现方式，在第六种可能的实现方式中，UE根据反馈的免切换UE标识和临时小区内UE标识获得所述小区内专用UE标识，包括：UE判断反馈的免切换UE标识是否与UE发送的UE的免切换UE标识相同；如果相同，则将临时小区内UE标识作为小区内专用UE标识；或者，如果不同，重复从向网络设备发送前导码直至从所述网络设备接收反馈的免切换UE标识的步骤，并再次判断所述反馈的免切换UE标识是否与所述UE发送的UE的免切换UE标识相同，直到所述反馈的免切换UE标识与所述UE发送给所述网络设备的所述免切换UE标识相同时，将获得的临时小区内UE标识作为所述小区内专用UE标识。
结合第一方面至第六种可能的实现方式中的任意一种，在第七种可能的实现方式中，还包括：UE从所述网络设备接收资源标识索引，资源标识索引用于在UE退出所述免切换态后，接收网络设备分配的进行数据传输时使用的资源。
结合第一方面至第七种可能的实现方式中的任意一种，在第八种可能的 实现方式中，还包括：在免切换状态，UE停止使用辅载波。
本发明的第二方面，提供一种传输数据的方法，包括：网络设备向处于连接态的用户设备UE发送免切换UE标识，该免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，免切换状态是指UE在免切换区域内移动时不执行切换流程，免切换区域包括至少两个小区；网络设备根据激活条件判断UE进入免切换状态后，存储所述UE的连接上下文；网络设备接收UE发送的免切换UE标识；和网络设备向UE发送UE当前服务小区的小区内专用UE标识，使得所述UE在获取小区内专用UE标识后退出所述免切换状态。
通过本实施例的移动性管理方法，在UE进入免切换状态后，网络设备无需在UE移动过程中频繁参与切换流程，节省了网络设备的通信资源。当网络设备需要与UE进行数据通信时，可通过寻呼查找该UE，使UE在获取小区内专用UE标识后迅速与网络设备连接，保证了数据传输的效率。
结合结合第二方面，在第一种可能的实现方式中，还包括：网络设备根据小区内专用UE标识及连接上下文接收UE发送的数据或向UE发送数据。
结合第二方面或第一种可能的实现方式，在第二种可能的实现方式中，激活条件包括以下条件中的至少一个：网络设备向UE发送命令指示UE进入免切换状态；和网络设备在预定义的时间内没有与UE进行数据传输。
结合第二方面或第二方面的第一种可能的实现方式至第二种可能的实现方式中的任意一种，在第三种可能的实现方式中，网络设备接收UE发送的所述免切换UE标识，包括：网络设备接收UE发送的随机接入前导码；网络设备向UE发送传输资源和临时小区内UE标识；网络设备接收UE利用所述传输资源发送的所述免切换UE标识；网络设备向UE发送小区内专用UE标识包括：网络设备发送反馈的免切换UE标识，小区内专用UE标识是所述UE根据所述反馈的免切换UE标识和临时小区内UE标识获得的。
结合第二方面的第三种可能的实现方式，在第四种可能的实现方式中，还包括：网络设备向UE发送免切换区域标识，该免切换区域标识用于标示对应的免切换区域；网络设备接收UE利用传输资源发送的免切换UE标识包括：网络设备接收所述UE利用传输资源发送的免切换UE标识和免切换区域标识。
结合第二方面或第二方面的第一种可能的实现方式至第四种可能的实 现方式中的任意一种，在第五种可能的实现方式中，还包括：网络设备向UE发送资源标识索引，所述资源标识索引用于分配所述UE进入连接态后，进行数据传输时使用的资源。
本发明的第三方面，提供一种用户设备UE，包括：接收单元，用于在UE处于连接态时从网络设备接收免切换UE标识，免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，所述免切换区域包括至少两个小区；处理单元，用于在满足激活条件后指示所述UE进入免切换状态，在免切换状态，UE在所述免切换区域内移动时不执行切换流程；存储单元，用于在UE的所述免切换状态，存储所述UE的所述免切换UE标识和UE在所述连接态的连接上下文；发送单元，用于在UE满足去激活条件后，向网络设备发送所述免切换UE标识；接收单元还用于从所述网络设备获取当前服务小区的小区内专用UE标识；所述处理单元还用于在接收到所述小区内专用UE标识后将所述UE退出所述免切换状态。
结合第三方面，在第一种可能的实现方式中，所述发送单元还用于根据所述小区内专用UE标识及所述连接上下文，向所述网络设备发送数据；或所述接收单元还用于根据所述小区内专用UE标识及所述连接上下文从所述网络设备接收数据。
结合第三方面或第三方面的第一种可能的实现方式，在第二种可能的实现方式中，激活条件包括：所述接收单元接收到所述网络设备的命令，所述命令指示所述UE进入所述免切换状态。
结合第三方面或第三方面的第一种可能的实现方式，在第三种可能的实现方式中，用户设备还包括：计时单元，用于对所述UE停止与所述网络设备进行数据传输的时间段进行计时；所述处理单元还用于判断所述时间段是否大于或等于预定义时间，当所述时间段大于或等于所述预定义时间时，认定所述激活条件得到满足。
结合第三方面至第三面的第三种可能的实现方式中的任意一种，在第四种可能的实现方式中，所述UE满足去激活条件包括以下中的至少一个：所述接收单元接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述处理单元根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域；所述接收单元监听寻呼信道，并根据所述免切换UE标识接收所述网络设备在所述寻呼信道上发送的寻呼 消息，所述处理单元根据寻呼消息判断所述UE需要与所述网络设备传输数据；所述处理单元指示所述UE在所述免切换区域内的小区之间移动并根据小区重选准则进行小区重选时，所述处理单元判断目标服务小区与所述UE当前服务小区处于不同的跟踪区；和所述发送单元有上行数据需要发送。
结合第三方面的第四种可能的实现方式，在第五种可能的实现方式中，所述发送单元向所述网络设备发送所述免切换UE标识，包括：所述发送单元向所述网络设备发送随机接入前导码；所述接收单元接收所述网络设备分配的传输资源和临时小区内UE标识；所述发送单元利用所述传输资源，将所述免切换UE标识发送给所述网络设备；所述接收单元从所述网络设备获取所述当前服务小区的小区内专用UE标识，包括：所述接收单元根据所述临时小区内UE标识，从所述网络设备接收反馈的免切换UE标识；所述处理单元根据所述反馈的免切换UE标识和所述临时小区内UE标识获得所述小区内专用UE标识。
结合第三方面的第五种可能的实现方式，在第六种可能的实现方式中，当确定所述UE满足去激活条件包括所述接收单元接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述处理单元根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域时；所述发送单元利用所述传输资源，将所述免切换UE标识发送给所述网络设备包括：所述发送单元利用所述传输资源，将所述免切换UE标识和所述UE原免切换区域的所述免切换区域标识发送给所述网络设备。
结合第三方面的第五种可能的实现方式或第六种可能的实现方式，在第七种可能的实现方式中，所述处理单元根据所述反馈的免切换UE标识和所述临时小区内UE标识获得所述小区内专用UE标识，包括：所述处理单元判断所述反馈的免切换UE标识是否与所述UE发送的所述UE的免切换UE标识相同，如果相同，则将所述临时小区内UE标识作为所述小区内专用UE标识；或者，如果不同，所述处理单元控制所述发送单元、所述接收单元和所述处理单元重复执行从发送所述前导码到接收反馈的免切换UE标识的全部步骤，并再次判断所述反馈的免切换UE标识是否与所述UE发送的所述UE的免切换UE标识相同，直到所述反馈的免切换UE标识与所述UE发送给所述网络设备的所述免切换UE标识相同时，将获得的临时小区内UE标识作为所述小区内专用UE标识。
结合第三方面至第七种可能的实现方式中的任意一种，在第八种可能的实现方式中，所述接收单元还用于从所述网络设备接收资源标识索引，并利用所述资源标识索引，在所述UE退出所述免切换态后，接收所述网络设备分配的进行数据传输时使用的资源。
结合第三方面至第八种可能的实现方式中的任意一种，在第九种可能的实现方式中，所述处理单元还用于，在所述免切换状态，控制所述发送单元和所述接收单元停止使用辅载波。
本发明的第四方面，提供一种网络设备，包括：发送单元，用于向处于连接态的用户设备UE发送免切换UE标识，所述免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，所述免切换状态是指所述UE在所述免切换区域内移动时不执行切换流程，所述免切换区域包括至少两个小区；处理单元，用于根据激活条件判断所述UE进入免切换状态；移动锚点，用于在判断所述UE进入免切换状态后，存储所述UE的连接上下文；接收单元，用于接收所述UE发送的所述免切换UE标识；和所述发送单元还用于向所述UE发送所述UE当前服务小区的小区内专用UE标识，使得所述UE在获取小区内专用UE标识后退出所述免切换状态。
结合第四方面，在第一种可能的实现方式中，所述接收单元还用于根据所述小区内专用UE标识及所述连接上下文接收所述UE发送的数据；或所述发送单元还用于根据所述小区内专用UE标识及所述连接上下文向所述UE发送数据。
结合第四方面或第四方面的第一种可能的实现方式，在第二种可能的实现方式中，激活条件包括：所述发送单元向所述UE发送命令指示所述UE进入所述免切换状态。
结合第四方面或第四方面的第一种可能的实现方式，在第三种可能的实现方式中，还包括：计时单元，用于对所述网络设备停止与所述UE进行数据传输的时间段进行计时；所述处理单元还用于判断所述时间段是否大于或等于预定义时间，当所述时间段大于或等于所述预定义时间时，认定所述激活条件得到满足。
结合第四方面的第三种可能的实现方式，在第四种可能的实现方式中，所述接收单元接收所述UE发送的所述免切换标识，包括：所述接收单元接收所述UE发送的随机接入前导码；所述发送单元向所述UE发送传输资源 和临时小区内UE标识；所述接收单元接收所述UE利用所述传输资源发送的所述免切换UE标识；所述发送单元向所述UE发送所述小区内专用UE标识包括：所述发送单元发送反馈的免切换UE标识。
结合第四方面的第四种可能的实现方式，在第五种可能的实现方式中，所述发送单元向所述UE发送免切换区域标识，所述免切换区域标识用于标示对应的免切换区域；所述接收单元接收所述UE利用所述传输资源发送的所述免切换UE标识包括：所述接收单元接收所述UE利用所述传输资源发送的所述免切换UE标识和所述免切换区域标识。
结合第四方面或第四方面的第一种可能的实现方式至第五种可能的实现方式中的任意一种，在第六种可能的实现方式中，所述发送单元向所述UE发送资源标识索引，所述资源标识索引用于分配所述UE进入连接态后，进行数据传输时使用的资源。
综上，本发明实施例设计了一种免切换状态，使得处于该状态的UE能够在保留连接上下文的情况下，在免切换区域内移动时不执行切换过程，解决了UE在移动过程中频繁切换的问题，并在需要传输数据时能迅速与网络设备连接，保证了数据传输的效率。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例的一个应用场景的示意图。
图2是本发明实施例的另一个应用场景的示意图。
图3是本发明一个实施例的移动性管理的方法的流程图。
图4是本发明另一个实施例的移动性管理的方法的流程图。
图5是本发明一个实施例的用户设备的结构示意图。
图6是本发明另一个实施例的用户设备的结构示意图。
图7是本发明一个实施例的网络设备的结构示意图。
图8是本发明另一个实施例的网络设备的结构示意图。
图9是本发明另一个实施例的网络设备的结构示意图。
图10是本发明另一个实施例的网络设备的结构示意图。
图11是本发明另一个实施例的网络设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
应理解，本发明实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)等。
还应理解，本发明实施例中，基站可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是未来5G网络中的基站设备等，本发明对此并不限定。
还应理解，在本发明实施例中，UE可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网(Core Network)进行通信，UE可称为接入终端、终端设备、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。UE可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及未来5G网络中的终端设备等。
图1是本发明实施例的一个应用场景的示意图100。如图1所示，该应 用场景100包括核心网102，免切换设备110，免切换设备120以及用户设备(User Equipment，UE)130。
如图1所示，免切换设备110包括n个基站112-1、112-2…112-n及移动锚点140，其中，n为大于0的自然数。免切换设备120包括m个基站122-1、122-2…122-m，移动锚点150集成于基站122-1中，其中，m为大于0的自然数。应理解，移动锚点可为逻辑实体，其可由独立的服务器进行实现，例如免切换设备110中所示的移动锚点140，也可集成于基站122-1、122-2…或122-m的任意一个中，例如免切换设备120中所示的移动锚点150。
图2是本发明实施例的另一个应用场景的示意图200。应用场景200可基于云无线接入网(Cloud RAN)技术实现。在Cloud RAN技术中，每个小区的基站的射频和基带分离，一部分小区基带集中到一个物理位置即基带池中，而各个射频则集中部署在远端，成为一个射频组。该种架构使得集中在同一基带池中的小区可以实现硬件和信息的共享，便于协调资源。如图2所示，应用场景200包括核心网202，云无线接入网204及UE230。其中，云无线接入网204包括基带池210，220，以及射频组260。基带池210包括基带212-1、212-2…212-n及移动锚点240，其中，n为大于0的自然数。基带池220包括m个基带222-1、222-2…222-m，移动锚点250集成于基站222-1中。同样地，移动锚点可为逻辑实体，其可由独立的服务器进行实现，例如基带池210中所示的移动锚点240；也可集成于基带222-1、222-2…或222-n中的任意一个中，例如基带池220中所示的移动锚点250。
基于cloud RAN的网络设备可以与基带池和射频组进行对应，例如基带池210与射频组260可作为一个免切换设备，基带池220和射频组260可作为另一个免切换设备。在实现上，一个免切换区域可以对应一个基带池内包括的全部基带对应的小区，免切换区域的概念将在图3中进行说明。
应理解，本发明实施例中，将与UE通信的网络侧的设备统称为网络设备。网络设备可包括图1及图2所示的应用场景中的核心网、免切换设备、移动锚点、基站、基带、射频组等，也可包括其他应用场景中与UE通过网络进行通信并可以实现本发明实施例功能的其他设备。
图3是根据本发明一个实施例的移动性管理的方法的示意性流程图。图3的方法由UE执行。
步骤310，处于连接态的用户设备UE从网络设备接收免切换UE标识， 例如HFA-RNTI(Handover Free Area-Radio Network Temporary Identifier，免切换区域-无线网络临时标识)，该免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，免切换区域包括至少两个小区。
免切换状态及免切换区域的概念将结合步骤320进行说明。
步骤320，UE在满足激活条件后进入免切换状态。在免切换状态，UE存储上述免切换UE标识，并存储UE在连接态的连接上下文，并且在免切换区域内移动时不执行切换过程。
可选地，在一个实施例中，上述激活条件包括：接收到网络设备发送的命令，该命令指示UE进入免切换状态。
可选地，在另一个实施例中，所述激活条件包括，UE在预定义的一段时间内没有向网络设备进行数据传输。例如，UE内部可设置定时器，在UE收到免切换UE标识HFA-RNTI后，当UE停止与网络设备传输数据时，该定时器开始计时，若在计时中途，UE向网络设备传输数据，则定时器停止计时，等待数据传输完毕重新开始计时。若在定时器到时前，UE均未与网络设备进行数据传输，则在定时器到时后，UE进入免切换状态。
可选地，在免切换状态，该定时器停止计时，例如设置为初始状态或超时状态。UE与网络设备传输数据包括向网络设备发送数据和/或从网络设备接收数据。
可选地，在一个实施例中，每个免切换区域有免切换区域标识，以便UE和/或网络设备确定一个免切换区域。该唯一的免切换区域标识可以是在局部范围内唯一，例如在一个跟踪区(Tracking Area)内或者在一个PLMN内唯一，也可以是全球范围内唯一。免切换区域中的小区在系统信息中广播该小区所归属的免切换区域的免切换区域标识，以便UE在接收当前服务小区的广播后，可以确定当前所在的免切换区域。例如，UE在进入免切换状态时，接收当时服务小区的广播，存储该小区所属的免切换区域的免切换区域标识。UE根据当前服务小区广播的免切换区域标识及自身存储的免切换区域标识判断移动是否跨过免切换区域。
可选地，在一个实施例中，在免切换状态，UE在免切换区域内移动时，可基于测量自行更换服务小区，不通知网络设备。例如，UE进入所述免切换状态后，在免切换区域内的小区之间移动时，根据小区重选准则进行小区重选，即UE可自行确定目标服务小区而不通知网络设备。例如，UE找到 一个信号质量更好或者强度更高的小区时，可将该小区做为目标服务小区。可选地，当UE在连接态时，在网络设备注册其跟踪区(Tracking Area)。例如，UE可向网络设备发送其当前连接态服务小区并接收网络设备据此分配的跟踪区。
可选地，在一个实施例中，UE在免切换状态时监听寻呼信道，并根据免切换UE标识HFA-RNTI接收网络设备针对自己的寻呼消息。例如，当处于免切换状态的UE需要被寻呼时，网络设备在UE所在的免切换区内的所有小区进行寻呼。UE通过监听寻呼信道得知网络设备对其的寻呼。例如，UE可以获取寻呼消息并根据寻呼消息中携带的UE标识来判断是否是对自己的寻呼，该UE标识可包括处于连接态的UE的小区内UE标识，例如小区无线网络临时标识(Cell-Radio Network Tempory Identity，C-RNTI，以及处于免切换态的UE的免切换UE标识HFA-RNTI。如果UE接收到的寻呼消息中携带了免切换UE标识HFA-RNTI，则UE判断是否和自己的免切换UE标识HFA-RNTI相同，如果相同，则认为自己被寻呼。网络设备寻呼UE可以是其需要与UE进行数据传输，或者有别的UE呼叫该UE。
可选地，在一个实施例中，UE进入所述免切换状态后，如果配置了多载波，停止使用所有辅载波。停止辅载波使用包括删除辅载波上下文，或者保留辅载波上下文但停止监听辅载波下行信道。同时UE保持对主载波的寻呼监听。
通过步骤320，UE可根据接收到的免切换区域内UE标识，在满足激活条件后进入免切换状态。在免切换状态，UE存储所述免切换UE标识和所述UE在所述连接态的连接上下文，且所述UE在所述免切换区域内移动时不执行切换流程。
步骤330，UE确定满足去激活条件后，向网络设备发送所述免切换UE标识。
可选地，UE确定满足去激活条件包括以下中的至少一个。
UE接收所述网络设备发送的免切换区域标识，该免切换区域标识用于标示对应的免切换区域，UE根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域。
UE监听寻呼信道，并根据所述免切换UE标识接收所述网络设备在所述寻呼信道上发送的寻呼消息，UE根据寻呼消息判断所述UE需要与所述 网络设备传输数据。
UE在所述免切换区域内的小区之间移动，根据小区重选准则进行小区重选时，目标服务小区与所述UE当前服务小区处于不同的跟踪区。以及
UE有上行数据需要发送。
可选地，UE向所述网络设备发送所述免切换UE标识，包括如下几个步骤中的部分或全部，本发明优选包括如下全部步骤。
步骤330-1，UE向网络设备发送随机接入前导码，请求网络设备为UE分配传输资源和当前服务小区的小区内专用UE标识。
由于前导码为公共资源，可能有若干UE使用同样的前导码向网络设备发送请求。因此，网络设备接收到前导码后无法识别具体是哪个UE发送的该前导码。
步骤330-2，UE接收网络设备分配的传输资源和临时小区内UE标识。例如，UE可接从网络设备接收资源分配命令，该命令可用于通知UE可使用的上行传输资源，并同时携带分配的临时小区内UE标示。
由于UE接收到的传输资源和随机小区内UE标识并不是网络设备唯一发送为当前UE的，因此小区内临时UE标识需要经过进一步验证才能作为该UE的小区内UE标识。
可选地，上行传输资源可以为时域和/或频域资源。
步骤330-3，UE利用网络设备为其分配的传输资源，将其携带的免切换UE标识发送给网络设备。例如，UE可通过MAC信令将其携带的免切换UE标识发送给基站。可选地，UE可以通过在传输资源中包含逻辑信道标识来指示此次发送的上行数据包中携带了UE的免切换UE标识。
可选地，当去激活条件为UE根据当前服务小区广播的免切换区域标识及自身存储的免切换区域标识判断移动跨过免切换区域时，即所在免切换区域发生变化时，步骤330-3可包括：UE利用传输资源，将免切换UE标识和UE当前所在的免切换区域的免切换区域标识发送给所述网络设备。例如，UE可通过RRC消息将其携带的免切换UE标识和原免切换区域标识发送给当前网络设备。
步骤340，UE从网络设备接收当前服务小区的小区内专用UE标识，例如C-RNTI，并在接收到所述小区内专用UE标识后退出所述免切换状态。
UE在免切换状态可存储免切换UE标识和免切换区域标识，UE需根据 该免切换UE标识或者，免切换UE标识和免切换区域标识获取小区内专用UE标识。
步骤340又可包括如下几个步骤中的部分或全部，本发明优选包括如下全部步骤。
步骤340-1，UE根据接收到的临时小区内UE标识，从网络设备接收反馈的免切换UE标识。
步骤340-2，UE根据反馈的免切换UE标识和临时小区内UE标识得到所述小区内专用UE标识。可选地，UE判断所述反馈的免切换UE标识是否与UE发送的免切换UE标识相同。如果相同，则UE将临时小区内UE标识作为自己的小区内专用UE标识；或者，如果不同，重复步骤330-1、步骤330-2、步骤330-3至步骤340-1，直到接收到的反馈的免切换UE标识与UE发送的免切换区域内UE标识相同时，将本次获得的临时小区内UE标识作为所述小区内专用UE标识。
可选地，UE还可从网络设备接收资源标识索引，该资源标识索引用于在所述UE退出所述免切换态后，接收网络设备分配的进行数据传输时使用的资源。所述资源标识索引可以在330-3或者340-1步骤中接收。此资源可包括HARQ反馈资源，CSI反馈资源等。可选地，UE可以在步骤340之前，接收该资源标识索引和具体资源信息对应信息。例如，在连接态时，UE可通过专用消息，比如RRC重配置消息，接收该资源标识索引和对应信息。或者在免切换态时，UE可通过广播消息获取资源标识索引和对应信息。
通过步骤340，UE向网络设备发送其在免切换状态携带的免切换UE标识，并从网络设备接收网络设备为UE分配的小区内专用UE标识。UE在接收到小区内专用UE标识后，退出免切换状态。
可选地，该移动性管理的方法300还包括以下步骤：
步骤350，UE根据在步骤330中接收到的小区内专用UE标识及UE存储的连接上下文，向所述网络设备发送数据或从所述网络设备接收数据。
通过本实施例的移动性管理方法，处于连接态的UE能够进入免切换状态。在免切换状态，UE可在保留连接上下文的情况下，在免切换区域内移动时不执行切换过程，解决了UE在移动过程中频繁切换的问题。同时，UE在需要传输数据时能仅通过获取小区内专用UE标识迅速与网络设备连接，而无需完成整个数据接入过程，保证了数据传输的效率。
图4是根据本发明一个实施例的移动性管理的方法的示意性流程图。图4的方法由网络设备执行。
步骤410，网络设备向处于连接态的用户设备UE发送免切换UE标识，例如HFA-RNTI(Handover Free Area-Radio Network Temporary Identifier，免切换区域-无线网络临时标识)，免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，所述免切换状态是指所述UE在所述免切换区域内移动时不执行切换流程，所述免切换区域包括至少两个小区。
步骤420，网络设备根据激活条件判断所述UE进入免切换状态后，存储所述UE的连接上下文。
可选地，在一个实施例中，上述激活条件包括：网络设备向所述UE发送命令，所述命令指示所述UE进入所述免切换状态。
可选地，在另一个实施例中，所述激活条件包括，网络设备在预定义的一段时间内没有与UE进行数据传输。例如，网络设备内部可设置定时器，在向UE发送免切换UE标识HFA-RNTI后，当网络设备停止与UE传输数据时，该定时器开始计时，若在计时中途，网络设备与UE之间进行了数据传输，则定时器停止计时，等待数据传输完毕重新开始计时。若在定时器到时前，均未进行数据传输，则在定时器到时后，网络设备判断UE进入免切换状态。网络设备停止与UE传输数据包括向UE发送数据和/或从UE接收数据。
每个免切换区域有免切换区域标识，以便UE和/或网络设备唯一地确定一个免切换区域。UE的免切换状态和免切换区域的定义可参见图3的步骤320。网络设备根据激活条件判断UE进入免切换状态后，存储UE的连接上下文。例如，保存UE的无线资源配置信息，保留网络设备和核心网之间针对所述UE的连接。
可选地，当网络设备需要寻呼处于免切换状态的UE时，确定所述UE所处的免切换区，网络设备在所述免切换区的所有小区发送寻呼消息，寻呼消息中可携带免切换UE标识，供UE判断是否是寻呼自己。网络设备寻呼UE可以是其有下行数据要给UE发送，或者有别的UE呼叫该UE。
步骤430，网络设备接收UE发送的免切换UE标识。
可选地，网络设备接收UE在满足去激活条件后发送的免切换UE标识。该去激活条件在步骤330中已有描述，在此不再赘述。
可选地，网络设备接收UE发送的免切换标识，包括如下几个步骤中的部分或全部，本发明优选包括如下全部步骤。
步骤430-1，网络设备接收UE发送的随机接入前导码。该前导码请求网络设备为其分配传输资源和小区内专用UE标识。由于前导码为公共资源，可能有若干UE使用同样的前导码向网络设备发送请求，因此，网络设备接收到前导码后无法识别具体是哪个UE发送的该前导码。
步骤430-2，网络设备向UE发送传输资源和临时小区内UE标识。因为网络设备无法判断请求传输资源和小区内UE标识的UE，因此网络设备根据接收到的UE发送前导码的时间点相关的UE标识向UE发送所述传输资源和随机小区内UE标识，以便所有利用该前导码的UE都能收到所述传输资源和随机小区内UE标识信息。其中，UE标识可包括小区内专用UE标识和免切换UE标识。
步骤430-3，网络设备接收所述UE利用所述传输资源发送的免切换UE标识。由于在步骤430-2中，网络设备有可能向多个UE发送了传输资源和临时小区内UE标识，在步骤430-3中，网络设备有可能接收到多个UE发送的免切换UE标识。可选地，网络设备还可接收所述UE利用所述传输资源发送的免切换UE标识和免切换区域标识。
步骤440，网络设备向UE发送UE当前服务小区的小区内专用UE标识，使得UE在接收到小区内专用UE标识后退出所述免切换状态。
可选地，在步骤440中，网络设备发送反馈的免切换UE标识。例如，网络设备随机选择接收到的多个免切换UE标识中的一个做为反馈的免切换UE标识。UE的小区内专用UE标识是根据该反馈的免切换UE标识和临时小区内UE标识获得的。
可选地，网络设备还可向UE发送资源标识索引，该资源标识索引用于在所述UE退出所述免切换态后，接收网络设备分配的进行数据传输时使用的资源。该资源标识索引可以在430-3或者440步骤中接收。此资源可包括HARQ反馈资源，CSI反馈资源等。可选地，网络设备可以在步骤430之前，接收该资源标识索引和具体资源信息对应信息。例如，在连接态时，网络设备可通过专用消息，比如RRC重配置消息，发送该资源标识索引和对应信息。或者在免切换态时，网络设备通过广播消息发送资源标识索引和对应信息。
通过步骤440，网络设备从UE接收其在免切换状态携带的免切换UE标识，或者接收免切换UE标识及免切换区域标识，并向UE分配小区内专用UE标识。
可选地，该移动性管理的方法400还包括步骤450：
步骤450，网络设备根据小区内专用UE标识及连接上下文接收UE发送的数据或向UE发送数据。
通过本实施例的移动性管理方法，在UE进入免切换状态后，网络设备无需在UE移动过程中频繁参与切换流程，节省了网络设备的通信资源。当网络设备需要与UE进行数据通信时，可通过寻呼查找该UE，使UE在获取小区内专用UE标识后迅速与网络设备连接，保证了数据传输的效率。
图5是本发明一个实施例的用户设备的结构示意图。图5所示的用户设备包括接收单元510，处理单元520、发送单元530、存储单元540和计时单元550。
接收单元510，用于在连接态从网络设备接收免切换UE标识，例如HFA-RNTI(Handover Free Area-Radio Network Temporary Identifier，免切换区域-无线网络临时标识)，该免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE。可选地，免切换区域包括至少两个小区。
免切换状态及免切换区域的概念在图3步骤310及步骤320已做说明，在此不做进一步描述。
处理单元520，用于在满足激活条件后将UE切换入免切换状态，在免切换状态，UE存储免切换UE标识和UE在连接态的连接上下文，并且在免切换区域内移动时不执行切换流程。
存储单元530，用于在UE的免切换状态，存储UE的免切换UE标识，以及UE在连接态的连接上下文。
处理单元520，还用于判断UE是否满足去激活条件。
接收单元510，还用于从网络设备接收当前服务小区的小区内专用UE标识。
处理单元520，还用于在接收单元510接收到小区内专用UE标识后，将UE退出免切换状态。
发送单元540，还用于根据小区内专用UE标识及存储的UE的连接上下文，向网络设备发送数据。
可选地，作为一个实施例，激活条件包括：接收单元510接收到所述网络设备的命令，所述命令指示所述UE进入所述免切换状态。
可选地，作为另一个实施例，用户设备还包括：
计时单元550，用于对UE停止与网络设备进行数据传输的时间段进行计时；
处理单元520还用于判断计时的时间段是否大于或等于预定义时间，当该时间段大于或等于预定义时间时，认定激活条件得到满足。
可选地，处理单元520判断所述UE是否满足去激活条件包括以下中的至少一个。
接收单元510接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述处理单元根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域。
接收单元510监听寻呼信道，并根据所述免切换UE标识接收所述网络设备在所述寻呼信道上发送的寻呼消息，所述处理单元根据寻呼消息判断所述UE需要与所述网络设备传输数据。
处理单元520指示所述UE在所述免切换区域内的小区之间移动并根据小区重选准则进行小区重选时，所述处理单元判断目标服务小区与所述UE当前服务小区处于不同的跟踪区。
以及发送单元530有上行数据需要发送。
发送单元540，用于在UE确定满足去激活条件后，向网络设备发送免切换UE标识。
可选地，作为另一个实施例，处理单元520还用于在免切换状态，控制接收单元510和发送单元540停止使用辅载波。
可选地，作为一个实施例，发送单元向所述网络设备发送所述免切换UE标识，包括：
发送单元540向网络设备发送前导码，请求网络设备为UE分配传输资源和所述小区内专用UE标识。
接收单元510接收网络设备分配的传输资源和临时小区内UE标识。
发送单元540利用传输资源，将免切换UE标识发送给网络设备。
可选地，当处理单元520确定满足去激活条件包括接收单元510接收网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换 区域，所述处理单元根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域时；
发送单元540利用该传输资源，将免切换UE标识发送给网络设备包括：
发送单元540利用该传输资源，将免切换UE标识和UE原免切换区域的免切换区域标识发送给网络设备。
接收单元510从网络设备获取当前服务小区的小区内专用UE标识，包括：
接收单元510根据临时小区内UE标识，从网络设备接收反馈的免切换UE标识。
处理单元520根据反馈的免切换UE标识和临时小区内UE标识获得小区内专用UE标识。
处理单元520根据反馈的免切换UE标识和临时小区内UE标识获得小区内专用UE标识，包括：
处理单元520判断反馈的免切换UE标识是否与UE发送的UE的免切换UE标识相同，如果相同，则将临时小区内UE标识作为小区内专用UE标识；或者，如果不同，处理单元520控制发送单元540、接收单元510重复执行从发送所述前导码到接收反馈的免切换UE标识的全部步骤，并再次判断反馈的免切换UE标识是否与UE发送的UE的免切换UE标识相同，直到反馈的免切换UE标识与UE发送给网络设备的免切换UE标识相同时，将获得的临时小区内UE标识作为小区内专用UE标识。
可选地，作为另一个实施例，接收单元510还用于从网络设备接收资源标识索引，并利用资源标识索引，在UE退出免切换态后，接收网络设备分配的进行数据传输时使用的资源。上述资源可为HARQ反馈资源和/或CSI反馈资源。
应注意，本发明实施例中，接收单元510可以由接收器实现，处理单元520可以由处理器实现，存储单元530可以由处理器实现，发送单元540可以由发送器实现。如图6所示，用户设备600可以包括处理器610、接收器620、发送器630和存储器640。其中，存储器640可以用于存储处理器610执行时的代码等。
用户设备600中的各个组件通过总线系统660耦合在一起，其中总线系统660除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
图7是本发明一个实施例的网络设备的结构示意图。图7所示的网络设备700包括移动锚点710，发送单元720，处理单元730、接收单元740和计时单元750。
发送单元720，用于向处于连接态的用户设备UE发送免切换UE标识，所述免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，所述免切换状态是指所述UE在所述免切换区域内移动时不执行切换流程，所述免切换区域包括至少两个小区。免切换状态及免切换区域的内容在图3步骤310及步骤320已做说明，在此不做进一步描述。
处理单元730，用于根据激活条件判断所述UE进入免切换状态。
移动锚点710，用于在判断所述UE进入免切换状态后，存储所述UE的连接上下文。
接收单元740，用于接收UE发送的免切换UE标识。
发送单元720还用于向UE发送UE当前服务小区的小区内专用UE标识，使得所述UE在获取小区内专用UE标识后退出所述免切换状态。
可选地，该激活条件包括：发送单元720向UE发送命令，该命令指示UE进入免切换状态。
可选地，网络设备700还包括：
计时单元750，用于对发送单元720和接收单元740停止与UE进行数据传输的时间段进行计时。数据传输包括发送单元720向UE发送数据和/或接收单元740从UE接收数据。
处理单元730还用于判断计时单元记录的时间段是否大于或等于预定义时间，当该时间段大于或等于预定义时间时，认定激活条件得到满足，使UE进入免切换态。
移动锚点710还用于在UE进入免切换状态后，存储UE的连接上下文。
可选地，发送单元720还用于根据小区内专用UE标识及连接上下文接收UE发送的数据或向UE发送数据。
可选地，接收单元740接收UE发送的所述免切换标识，包括：
接收单元740接收UE发送的随机接入前导码。
发送单元720向UE发送传输资源和临时小区内UE标识。
接收单元740接收UE利用传输资源发送的免切换UE标识。
可选地，小区内专用UE标识用于使UE退出免切换状态。发送单元720 向UE发送小区内专用UE标识包括：
发送单元720发送反馈的免切换UE标识，该小区内专用UE标识是所述UE根据所述反馈的免切换UE标识和所述临时小区内UE标识获得的。网络设备700根据免切换UE标识获得小区内专用UE标识的内容与图4步骤430和步骤440中一致，在此不做进一步描述。
可选地，每个免切换区域对应一个免切换区域标识，处理单元730根据免切换区域标识唯一地确定一个免切换区域。接收单元740接收UE利用所述传输资源发送的所述免切换UE标识包括：接收单元740接收UE利用传输资源发送的免切换UE标识和述免切换区域标识。
可选地，发送单元720向UE发送资源标识索引，该资源标识索引用于分配UE进入连接态后，进行数据传输时使用的资源。该资源标识索引在图4步骤440后已做说明，在此不做进一步描述。
可选地，在移动锚点710为处于连接态的用户设备UE配置免切换UE标识之前，还包括：
处理单元730向移动锚点710发送配置请求，请求移动锚点为UE配置免切换UE标识；
处理单元730接收配置好的免切换UE标识。发送单元720可将该免切换UE标识发送给UE。
可选地，在发送单元720向UE发送UE当前服务小区的小区内专用UE标识之后，还包括：
处理单元730向移动锚点发送连接上下文请求消息；
处理单元730接收移动锚点发送的连接上下文。
应理解，在一个实施例中，移动锚点710可以完成处理单元730的功能，或者，处理单元730可以完成移动锚点710的功能。也即，移动锚点710与处理单元730的功能可以由该两个单元分别完成，也可以由其中一个单元独立完成。
通过本实施例的移动性管理方法，在UE进入免切换状态后，网络设备无需在UE移动过程中频繁参与切换流程，节省了网络设备的通信资源。当网络设备需要与UE进行数据通信时，可通过寻呼查找该UE，使UE在获取小区内专用UE标识后迅速与网络设备连接，保证了数据传输的效率。
可选地，在本发明实施例中，发送单元720可以由发送器实现，处理单 元730可以由处理器实现，接收单元740可以由接收器实现，计时单元750可以由计时器实现。
图8是上述实施例中网络设备的结构示意图。如图8所示，网络设备800可包括基站801和移动锚点802。基站801可以包括处理器810、接收器820、发送器830、存储器840和计时器850。其中，存储器840可以用于存储处理器810执行时的代码等。基站801中的各个组件通过总线系统860耦合在一起，其中总线系统860除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
图9是上述实施例中网络设备的另一个结构示意图，图9结合图1进行说明。如图9所示，基站900可以包括处理器910、接收器920、发送器930、存储器940、计时器950和移动锚点960。其中，存储器940可以用于存储处理器910执行时的代码等。基站900中的各个组件通过总线系统980耦合在一起，其中总线系统980除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
图10为上述实施例的网络设备的另一个结构示意图，如图10所示，网络设备1000包括基带1001，射频组1002和移动锚点1003。基带1001可以包括处理器1010、存储器1020和计时器1030。其中，存储器1020可以用于存储处理器1010执行时的代码等。射频组1002可以包括接收器1040和发送器1050。基带1001中的各个组件通过总线系统1060耦合在一起，其中总线系统1060除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
图11是上述实施例的网络设备的另一个结构示意图。如图11所示，网络设备1100包括基带1101和射频组1102。基带1101可以包括处理器1110、存储器1120、计时器1130和移动锚点1140。其中，存储器1120可以用于存储处理器1110执行时的代码等。基带1101中的各个组件通过总线系统1160耦合在一起，其中总线系统1160除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。射频组1102可以包括发送器1160和接收器1150。
应注意，本发明上述方法实施例可以应用于处理器中，或者由处理器实现。处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软 件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑示意图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本发明实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(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，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (32)

  1. 一种数据传输的方法，其特征在于，包括：
    处于连接态的用户设备UE从网络设备接收免切换UE标识，所述免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，所述免切换区域包括至少两个小区；
    所述UE在满足激活条件后进入免切换状态，在所述免切换状态下，所述UE存储所述免切换UE标识和所述UE在所述连接态的连接上下文，且所述UE在所述免切换区域内移动时不执行切换流程；
    在所述UE确定满足去激活条件后，所述UE向网络设备发送所述免切换UE标识；和
    所述UE从所述网络设备获取当前服务小区的小区内专用UE标识，并退出所述免切换状态。
  2. 根据权利要求1所述的方法，其特征在于，还包括：所述UE根据所述小区内专用UE标识及所述连接上下文，向所述网络设备发送数据或从所述网络设备接收数据。
  3. 根据权利要求1或2所述的方法，其特征在于，所述激活条件包括以下条件中的至少一个：
    所述UE接收到所述网络设备的命令，所述命令指示所述UE进入所述免切换状态；和
    所述UE在预定义的时间内没有与所述网络设备进行数据传输。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述UE确定满足去激活条件包括以下中的至少一个：
    所述UE接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述UE根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域；
    所述UE监听寻呼信道，并根据所述免切换UE标识接收所述网络设备在所述寻呼信道上发送的寻呼消息，所述UE根据寻呼消息判断所述UE需 要与所述网络设备传输数据；
    所述UE在所述免切换区域内的小区之间移动，根据小区重选准则进行小区重选时，目标服务小区与所述UE当前服务小区处于不同的跟踪区；和
    所述UE有上行数据需要发送。
  5. 根据权利要求4所述的方法，其特征在于，所述UE向所述网络设备发送所述免切换UE标识，包括：
    所述UE向所述网络设备发送随机接入前导码；
    所述UE接收所述网络设备分配的传输资源和临时小区内UE标识；
    所述UE利用所述传输资源，将所述免切换UE标识发送给所述网络设备；
    所述UE从所述网络设备获取当前服务小区的小区内专用UE标识包括：
    所述UE根据所述临时小区内UE标识，从所述网络设备接收反馈的免切换UE标识；
    所述UE根据所述反馈的免切换UE标识和所述临时小区内UE标识获得所述小区内专用UE标识。
  6. 根据权利要求5所述的方法，其特征在于，当所述UE确定满足去激活条件包括所述UE接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述UE根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域时；
    所述UE利用所述传输资源，将所述免切换UE标识发送给所述网络设备包括：
    所述UE利用所述传输资源，将所述免切换UE标识和所述UE原免切换区域的所述免切换区域标识发送给所述网络设备。
  7. 根据权利要求5或6所述的方法，其特征在于，所述UE根据所述反馈的免切换UE标识和临时小区内UE标识获得所述小区内专用UE标识，包括：
    所述UE判断所述反馈的免切换UE标识是否与所述UE发送的所述UE的免切换UE标识相同；如果相同，则将所述临时小区内UE标识作为所述 小区内专用UE标识；或者，如果不同，重复从向所述网络设备发送随机接入前导码直至从所述网络设备接收反馈的免切换UE标识的步骤，并再次判断所述反馈的免切换UE标识是否与所述UE发送的所述UE的免切换UE标识相同，直到所述反馈的免切换UE标识与所述UE发送给所述网络设备的所述免切换UE标识相同时，将获得的临时小区内UE标识作为所述小区内专用UE标识。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，还包括：
    所述UE从所述网络设备接收资源标识索引，所述资源标识索引用于在所述UE退出所述免切换态后，接收所述网络设备分配的进行数据传输时使用的资源。
  9. 根据权利要求1-8所述的方法，其特征在于，在所述免切换状态，所述UE停止使用辅载波。
  10. 一种数据传输的方法，其特征在于，包括：
    网络设备向处于连接态的用户设备UE发送免切换UE标识，所述免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，所述免切换状态是指所述UE在所述免切换区域内移动时不执行切换流程，所述免切换区域包括至少两个小区；
    所述网络设备根据激活条件判断所述UE进入免切换状态后，存储所述UE的连接上下文；
    所述网络设备接收所述UE发送的所述免切换UE标识；和
    所述网络设备向所述UE发送所述UE当前服务小区的小区内专用UE标识，使得所述UE在获取小区内专用UE标识后退出所述免切换状态。
  11. 根据权利要求10所述的方法，其特征在于，还包括：
    所述网络设备根据所述小区内专用UE标识及所述连接上下文接收所述UE发送的数据或向所述UE发送数据。
  12. 根据权利要求10或11所述的方法，其特征在于，所述激活条件包 括以下条件中的至少一个：
    所述网络设备向所述UE发送命令指示所述UE进入所述免切换状态；和
    所述网络设备在预定义的时间内没有与所述UE进行数据传输。
  13. 根据权利要求10-12任一项所述的方法，其特征在于，所述网络设备接收所述UE发送的所述免切换UE标识，包括：
    所述网络设备接收所述UE发送的随机接入前导码；
    所述网络设备向所述UE发送传输资源和临时小区内UE标识；
    所述网络设备接收所述UE利用所述传输资源发送的所述免切换UE标识；
    所述网络设备向所述UE发送所述小区内专用UE标识包括：
    所述网络设备发送反馈的免切换UE标识。
  14. 根据权利要求13所述的方法，其特征在于，还包括：
    所述网络设备向所述UE发送免切换区域标识，所述免切换区域标识用于标示对应的免切换区域；
    所述网络设备接收所述UE利用所述传输资源发送的所述免切换UE标识包括：
    所述网络设备接收所述UE利用所述传输资源发送的所述免切换UE标识和所述免切换区域标识。
  15. 根据权利要求10-14任一项所述的方法，其特征在于，还包括：
    所述网络设备向所述UE发送资源标识索引，所述资源标识索引用于分配所述UE进入连接态后，进行数据传输时使用的资源。
  16. 一种用户设备UE，其特征在于，包括：
    接收单元，用于在所述UE处于连接态时从网络设备接收免切换UE标识，所述免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，所述免切换区域包括至少两个小区；
    处理单元，用于在满足激活条件后指示所述UE进入免切换状态，在所 述免切换状态，所述UE在所述免切换区域内移动时不执行切换流程；
    存储单元，用于在所述UE的所述免切换状态，存储所述UE的所述免切换UE标识和所述UE在所述连接态的连接上下文；
    发送单元，用于在所述UE满足去激活条件后，向所述网络设备发送所述免切换UE标识；
    所述接收单元还用于从所述网络设备获取当前服务小区的小区内专用UE标识；
    所述处理单元还用于在接收到所述小区内专用UE标识后将所述UE退出所述免切换状态。
  17. 根据权利要求16所述的用户设备，其特征在于，
    所述发送单元还用于根据所述小区内专用UE标识及所述连接上下文，向所述网络设备发送数据；或
    所述接收单元还用于根据所述小区内专用UE标识及所述连接上下文从所述网络设备接收数据。
  18. 根据权利要求16或17所述的用户设备，其特征在于，所述激活条件包括：所述接收单元接收到所述网络设备的命令，所述命令指示所述UE进入所述免切换状态。
  19. 根据权利要求16或17所述的用户设备，其特征在于，还包括：
    计时单元，用于对所述UE停止与所述网络设备进行数据传输的时间段进行计时；
    所述处理单元还用于判断所述时间段是否大于或等于预定义时间，当所述时间段大于或等于所述预定义时间时，认定所述激活条件得到满足。
  20. 根据权利要求16-19任一项所述的用户设备，其特征在于，所述UE满足去激活条件包括以下中的至少一个：
    所述接收单元接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述处理单元根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域；
    所述接收单元监听寻呼信道，并根据所述免切换UE标识接收所述网络设备在所述寻呼信道上发送的寻呼消息，所述处理单元根据寻呼消息判断所述UE需要与所述网络设备传输数据；
    所述处理单元指示所述UE在所述免切换区域内的小区之间移动并根据小区重选准则进行小区重选时，所述处理单元判断目标服务小区与所述UE当前服务小区处于不同的跟踪区；和
    所述发送单元有上行数据需要发送。
  21. 根据权利要求20所述的用户设备，其特征在于，所述发送单元向所述网络设备发送所述免切换UE标识，包括：
    所述发送单元向所述网络设备发送随机接入前导码；
    所述接收单元接收所述网络设备分配的传输资源和临时小区内UE标识；
    所述发送单元利用所述传输资源，将所述免切换UE标识发送给所述网络设备；
    所述接收单元从所述网络设备获取所述当前服务小区的小区内专用UE标识，包括：
    所述接收单元根据所述临时小区内UE标识，从所述网络设备接收反馈的免切换UE标识；
    所述处理单元根据所述反馈的免切换UE标识和所述临时小区内UE标识获得所述小区内专用UE标识。
  22. 根据权利要求20或21所述的用户设备，其特征在于，当确定所述UE满足去激活条件包括所述接收单元接收所述网络设备发送的免切换区域标识，所述免切换区域标识用于标示对应的免切换区域，所述处理单元根据所述免切换区域标识判断所述UE移动超出所述UE所在的原免切换区域时；
    所述发送单元利用所述传输资源，将所述免切换UE标识发送给所述网络设备包括：
    所述发送单元利用所述传输资源，将所述免切换UE标识和所述UE原免切换区域的所述免切换区域标识发送给所述网络设备。
  23. 根据权利要求22所述的方法，其特征在于，所述处理单元根据所述反馈的免切换UE标识和所述临时小区内UE标识获得所述小区内专用UE标识，包括：
    所述处理单元判断所述反馈的免切换UE标识是否与所述UE发送的所述UE的免切换UE标识相同，如果相同，则将所述临时小区内UE标识作为所述小区内专用UE标识；或者，如果不同，所述处理单元控制所述发送单元、所述接收单元和所述处理单元重复执行从发送所述前导码到接收反馈的免切换UE标识的全部步骤，并再次判断所述反馈的免切换UE标识是否与所述UE发送的所述UE的免切换UE标识相同，直到所述反馈的免切换UE标识与所述UE发送给所述网络设备的所述免切换UE标识相同时，将获得的临时小区内UE标识作为所述小区内专用UE标识。
  24. 根据权利要求16-23任一项所述的用户设备，其特征在于，
    所述接收单元还用于从所述网络设备接收资源标识索引，并利用所述资源标识索引，在所述UE退出所述免切换态后，接收所述网络设备分配的进行数据传输时使用的资源。
  25. 根据权利要求16-24任一项所述的用户设备，其特征在于，
    所述处理单元还用于，在所述免切换状态，控制所述发送单元和所述接收单元停止使用辅载波。
  26. 一种网络设备，其特征在于，包括：
    发送单元，用于向处于连接态的用户设备UE发送免切换UE标识，所述免切换UE标识用于在一个免切换区域内唯一地标识一个免切换状态的UE，所述免切换状态是指所述UE在所述免切换区域内移动时不执行切换流程，所述免切换区域包括至少两个小区；
    处理单元，用于根据激活条件判断所述UE进入免切换状态；
    移动锚点，用于在判断所述UE进入免切换状态后，存储所述UE的连接上下文；
    接收单元，用于接收所述UE发送的所述免切换UE标识；和
    所述发送单元还用于向所述UE发送所述UE当前服务小区的小区内专 用UE标识，使得所述UE在获取小区内专用UE标识后退出所述免切换状态。
  27. 根据权利要求26所述的网络设备，其特征在于，
    所述接收单元还用于根据所述小区内专用UE标识及所述连接上下文接收所述UE发送的数据；或
    所述发送单元还用于根据所述小区内专用UE标识及所述连接上下文向所述UE发送数据。
  28. 根据权利要求26或27所述的网络设备，其特征在于，所述激活条件包括：
    所述发送单元向所述UE发送命令指示所述UE进入所述免切换状态。
  29. 根据权利要求26或27所述的网络设备，其特征在于，还包括：
    计时单元，用于对所述网络设备停止与所述UE进行数据传输的时间段进行计时；
    所述处理单元还用于判断所述时间段是否大于或等于预定义时间，当所述时间段大于或等于所述预定义时间时，认定所述激活条件得到满足。
  30. 根据权利要求26-29任一项所述的网络设备，其特征在于，所述接收单元接收所述UE发送的所述免切换标识，包括：
    所述接收单元接收所述UE发送的随机接入前导码；
    所述发送单元向所述UE发送传输资源和临时小区内UE标识；
    所述接收单元接收所述UE利用所述传输资源发送的所述免切换UE标识；
    所述发送单元向所述UE发送所述小区内专用UE标识包括：
    所述发送单元发送反馈的免切换UE标识。
  31. 根据权利要求30所述的网络设备，其特征在于，
    所述发送单元向所述UE发送免切换区域标识，所述免切换区域标识用于标示对应的免切换区域；
    所述接收单元接收所述UE利用所述传输资源发送的所述免切换UE标识包括：
    所述接收单元接收所述UE利用所述传输资源发送的所述免切换UE标识和所述免切换区域标识。
  32. 根据权利要求26-31任一项所述的网络设备，其特征在于，
    所述发送单元向所述UE发送资源标识索引，所述资源标识索引用于分配所述UE进入连接态后，进行数据传输时使用的资源。
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