WO2014015496A1 - 小区重选的方法和设备 - Google Patents

小区重选的方法和设备 Download PDF

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Publication number
WO2014015496A1
WO2014015496A1 PCT/CN2012/079185 CN2012079185W WO2014015496A1 WO 2014015496 A1 WO2014015496 A1 WO 2014015496A1 CN 2012079185 W CN2012079185 W CN 2012079185W WO 2014015496 A1 WO2014015496 A1 WO 2014015496A1
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WO
WIPO (PCT)
Prior art keywords
cell
information
terminal
reselection
neighbor
Prior art date
Application number
PCT/CN2012/079185
Other languages
English (en)
French (fr)
Inventor
耿婷婷
郑潇潇
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/079185 priority Critical patent/WO2014015496A1/zh
Priority to CN201280022289.6A priority patent/CN103828433B/zh
Publication of WO2014015496A1 publication Critical patent/WO2014015496A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—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
    • H04W36/08—Reselecting an access point

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a method and an apparatus for cell reselection. Background technique
  • the concurrent service refers to WCDMA (Wideband Code Division Multiple Access) to support multiple services at the same time. It can realize the simultaneous use of voice and Internet access of intelligent terminals.
  • WCDMA Wideband Code Division Multiple Access
  • the call rate of the voice service in the CS (Circuit Switch) domain will gradually increase. This is because the data service in the PS domain and the voice service in the CS domain use the same SRB2 (Signaling Radio Bear), so that when the data service of the PS domain frequently experiences RRC signaling interaction, CS may be caused.
  • the dropped call of the domain voice service After the CS domain voice service is dropped, the terminal re-selects the cell. If the terminal can re-access the network and restore the normal CS service in a short time, it can be regarded as the CS domain without dropping the call. Otherwise, the CS will be considered as CS.
  • the domain has dropped calls. Specifically, after detecting that the RB (Radio Non-Recoverable Error) occurs, the terminal first receives the system message sent by the network, reads the system information to obtain the reselection information, and according to the relevant protocol. Perform a reselection of the cell. Specifically, all cells of the original used frequency point are measured first, and if all the cells of the frequency point do not satisfy the condition, all cells of the different frequency point or all cells of the different system are continuously measured, so that if the terminal searches for the cell If the time is too long, it will cause the terminal to actually drop the call.
  • SUMMARY OF THE INVENTION Aspects of the present invention provide a method and apparatus for cell reselection to solve the problem that a search time is too long when a terminal reselects a cell in the prior art.
  • a first aspect of the present invention provides a method for cell reselection, including: when a terminal needs cell reselection, generating reselection cell information according to cell information stored by the terminal; and initiating and revising according to the reselected cell information The connection of the selected cell is established.
  • the generating reselection cell information according to the cell information stored by the terminal includes:
  • the neighboring cell list is generated according to the measurement report reported by the winter end or generated according to the pre-acquired neighboring cell information;
  • the reselection d and the area information are generated according to the activation set d and the area information of the winter end.
  • the system message includes information about a current cell where the terminal reselects a cell and/or a neighbor of the current cell. System message for the zone.
  • At least one of the following information is received: a neighboring cell list, a system message of the current cell in which the terminal reselects the cell, and a system message of the neighboring cell of the current cell.
  • the neighboring cell list includes a current cell where the terminal is reselected before the cell The timing difference of the neighboring cell and/or the information of the neighboring cell. .
  • the generating the reselected cell information according to the measurement report stored by the terminal includes:
  • Reselection and area information are generated based on the information of the preceding cells.
  • a second aspect of the present invention provides a cell reselection method, including: generating a neighbor list according to a measurement report of the terminal and/or a neighboring area information of a current cell where the winter end is located; When the neighboring cell list is selected, so that the winter end needs cell reselection, according to the connection between the neighboring cell column and the reselected cell, the neighboring cell list includes information about the current location of the winter end and the area and / or neighborhood information.
  • the neighboring cell list includes a timing difference between a current cell and a neighboring cell where the winter end reselection cell is located, and/or information of the neighboring cell.
  • a third aspect of the present invention provides a cell reselection apparatus, including: a generating module, configured to: when a terminal needs cell reselection, generate reselection cell information according to cell information stored by the terminal; Reselection of cell information, initiation of connection establishment with reselected cells.
  • the generating module is specifically configured to: when the terminal needs cell reselection, generate reselection cell information according to any one of the following manners: according to the terminal System message generates the reselected cell information; or
  • the neighboring cell list is generated according to the measurement report reported by the winter end or generated according to the pre-acquired neighboring cell information;
  • the device for reselecting the cell further includes: a receiving module, configured to: when the terminal is in a CELL-DCH state or a CELL— In the FACH state, at least one of the following information is received: a neighboring cell list, a system message of the current cell in which the terminal reselects the cell, and a system message of the current d, the neighboring cell of the zone.
  • the number of sub-caps is selected to select the first cell in which the wireless signal quality is ranked from the highest to the bottom in the measurement report of the winter end, where ⁇ is an integer greater than one;
  • a fourth aspect of the present invention provides a device for reselecting a cell, including: generating a neighboring cell list module, configured to generate a neighboring cell according to the measurement report of the terminal and/or the neighboring cell information of the current cell where the winter end is obtained in advance a list; the sending 3 ⁇ 4 is used to send the neighbor list to the winter end, so that when the winter end needs cell reselection, according to the connection of the neighboring cell column and the reselected cell, the The neighbor list includes the information of the d, the area, and/or the neighbor information of the terminal.
  • a fifth aspect of the present invention provides a terminal, including: at least one processor, and a memory, wherein the device is used for a program, and the device is read by When reselecting the regions in the device, the reselected cell information is generated according to the cell information stored by the terminal; and the connection establishment of the reselected cell is initiated according to the reselected cell information.
  • a sixth aspect of the present invention provides a network side device, including: at least one processor, and a memory, wherein the device is used for a ⁇ Generating a neighboring cell list by using the measurement report of the terminal and/or the pre-obtained neighbor cell information of the current cell where the terminal is located; sending the neighboring cell list to the winter end, so that the winter end needs the cell When reselecting, the neighboring cell list is connected with the reselected cell, and the neighboring cell list includes information about the cell in which the winter end is currently located and/or neighboring cell information.
  • the method and device for cell reselection provided by the present invention, when the terminal needs to re-select the cell to establish a corresponding connection, generates reselection cell information according to the acquired cell information, so that the terminal can save the acquisition.
  • the time for reselecting the cell information so as to speed up the cell reselection process, initiate connection establishment with the cell as soon as possible, and further complete the connection operation with the cell as soon as possible to restore the transmission of the service data.
  • FIG. 1 is a schematic flowchart diagram of a method for cell reselection according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for cell reselection according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an apparatus for cell reselection according to still another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an apparatus for cell reselection according to still another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an apparatus for cell reselection according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an apparatus for cell reselection according to still another embodiment of the present invention.
  • GSM Global System for Mobile communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • Frequency Division Multiple Frequency Division Multiple Access
  • FDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the user equipment which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, Radio Access Network; RAN for short); the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and has
  • the computer of the mobile terminal for example, may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network.
  • the wireless terminal may be: Personal Communication Service (PCS), a cordless telephone, a Session Initiation Protocol (SIP) telephone, and a wireless local loop (Wireless Local). Loo; hereinafter referred to as: WLL) Station, personal digital assistant (hereinafter referred to as: PDA) and other equipment.
  • a wireless terminal may also be referred to as a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Station), a mobile station (Mobile Station), a mobile station (Mobile), Remote Station, Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device Or User Equipment, etc.
  • a base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame with an Internet Protocol (IP) packet as a router between the wireless terminal and the rest of the access network, wherein the rest of the access network can include IP network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (Base Transceiver Station; BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (NodeB or eNB or e-NodeB in LTE). ), this application is not limited.
  • the eNB or the e-NodeB is an abbreviation of an evolved NodeB.
  • the base station controller may be a base station controller (hereinafter referred to as BSC) in GSM or CDMA, or may be a radio network controller (hereinafter referred to as RNC) in WCDMA. limited.
  • BSC base station controller
  • RNC radio network controller
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this article is merely an association describing the associated object, indicating that there can be three relationships, for example: A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the terminal generally has five states: Idle state, CELL-DCH
  • the basic feature of the CELL-DCH state is that the terminal is allocated a dedicated physical channel for transmitting data, except for the dedicated physical channel for uplink and downlink (Dedicated Physical
  • the terminal may also be assigned a Physical Uplink Shared Channel (PUSCH) and/or a Physical Downlink Shared Channel (PDSCH), which is based on UTRAN (Universal Mobile Telecommunications System).
  • Terrestrial Radio Access Network the general mobile communication system terrestrial radio access network, the terminal can use the dedicated transport channel, the uplink shared transport channel (USCH), the downlink shared transport channel (High-Speed Downlink Shared Channel, DSCH), and a combination of these transport channels.
  • USCH uplink shared transport channel
  • DSCH High-Speed Downlink Shared Channel
  • the basic feature of the CELL-FACH state is that there is no dedicated physical channel connection for transmitting data between the terminal and the UTRAN, the terminal will continuously monitor the FACH transmission channel in the downlink direction, and the public or shared transmission channel can be used in the uplink direction.
  • the UTRAN will broadcast the change of the system information to the terminal on the FACH in time through the corresponding scheduling information, so that the terminal re-reads the corresponding system.
  • the terminal in the CS domain detects that the RUE occurs in the SRB2, it changes from the CELL-DCH state to the In the non-CELL-DCH state, the terminal performs reselection of the cell operation in the non-CELL-DCH state.
  • the operation of reselecting the cell reaches a certain time, the operation of reselecting the cell has not been completed, and the terminal actually drops the call.
  • the terminal when the terminal retransmits a PDU more than a certain number, when the sending window reaches the maximum window, or receives a Status PDU (Status Protocol Data Unit) containing the sequence number of the error sent by the receiver.
  • a Reset PDU (Reset Protocol Data Unit) is sent to the bottom layer, and the corresponding timer is started. If the terminal receives the corresponding Reset within the time specified by the timer.
  • the Reset ACK (acknowledgement character) PDU in the PDU that is, the RSN (Reset Sequence Number) of the two is the same, the timer is stopped, otherwise the Reset PDU is resent. Since the maximum number of resets of SRB2 is 1, if the terminal initiates the RLC Reset procedure and does not receive the corresponding ACK PDU within the time specified by the timer, it is determined that RUE is detected in SRB2.
  • the terminal After detecting the RUE of the SRB2, the terminal will perform the operation of reselecting the cell as soon as possible. This is because the terminal cannot perform a large amount of data transmission similar to the call in the non-CELL-DCH state, so it is necessary to complete the cell reselection operation as soon as possible to return from the non-CELL-DCH state to the CEI-DCH state.
  • the terminal is configured according to a system information (System Information Block) sent by the network side.
  • SIB System Information Block
  • Reselect the cell There can be multiple system message elements in the system message, as follows:
  • SIB1 Non Access Stratum, non-access stratum layer system information and terminal timer/counter
  • SIB2 URA (UTRAN)
  • SIB3 parameters for cell selection and reselection
  • SIB4 parameters for cell selection and reselection in connected mode
  • SIB5 parameters for community common physical channel configuration
  • SIB6 Parameters for the common physical channel configuration of the cell in the connection mode
  • SIB7 information such as uplink interference and dynamic persistence level
  • SIB8, SIB9, SIB10 for WCDMA (Wideband Code Division Multiple Access) system
  • SIB11 Measurement control information, ie neighbor list
  • SIB12 Measurement control information in connected mode, ie neighbor list
  • SIB13, SIB14 for WCDMA system
  • SIB15 information for positioning service
  • SIB16 GSM-TD-SCDMA (Global System of Mobile communication-Time Division-Synchronous Code Division Multiple Access, Global System for Mobile Communications - Time Division Synchronous Code Division Multiple Access) Pre-configuration information required for inter-system handover
  • SIB17 Configuration of shared physical channels in connected mode Information
  • SIB18 Proximity cell P
  • the embodiment provides a method for reselecting a cell, which is used to complete cell reselection as soon as possible when the terminal detects that an RUE occurs.
  • This embodiment is applicable to the existing GSM, UMTS network, and LTE (Long Term Evolution) 4G.
  • the execution subject of this embodiment is a terminal.
  • FIG. 1 it is a schematic flowchart of a method for reselecting a cell according to this embodiment.
  • Step 101 When the terminal needs cell reselection, generate reselection cell information according to the cell information stored by the terminal.
  • the terminal When the terminal detects itself until the RUE occurs, the terminal starts a cell reselection operation.
  • the purpose of cell reselection is to reconnect the terminal to the cell and restore the service of the CS domain. That is, the terminal needs to reconstruct the SRB2 and re-acquire the dedicated channel, that is, the terminal is re-switched from the non-CELL-DCH state to the CELL-DCH state.
  • the cell that is reselected by the terminal may be the same as the cell when the RUE occurs, or may be different from the cell when the RUE occurs.
  • the reselected cell information includes a terminal initiated and a cell connection: a cell identifier, a cell offset, a neighboring area scrambling code, and a neighboring area pilot, etc., the terminal can reconnect to the cell according to the reselected cell information, and how the terminal reselects according to the cell.
  • the cell information reselection cell is a prior art, and details are not described herein again.
  • the area information may be the re-selection d, the area information included in the system message that the terminal needs to re-select the ' ⁇ , before the area, or the network side issued by the terminal before the terminal.
  • the cell information or the neighbor cell information to the 4th, that is to say, the ' ⁇ , the area message is the cell message that the terminal needs to re-select the ' ⁇ , the time zone has been inside the terminal, that is, the cell information known by the terminal.
  • the latest reselected cell information refers to the cell information closest to the terminal when the RUE occurs.
  • the cell information is in the terminal.
  • Step 102 Initiate connection establishment with the reselected cell according to the reselected cell information.
  • the terminal initiates a connection with the cell, that is, from the non-CELL-DCH state to
  • the reselected cell information is generated according to the acquired cell information, so that the terminal can save the time for reselecting the cell information, thereby speeding up the cell reselection process.
  • the connection establishment with the cell is initiated as soon as possible, and the connection operation with the cell is further completed as soon as possible to restore the transmission of the service data.
  • This embodiment provides a method for cell reselection based on the foregoing embodiment, and further specifically describes step 101 in the foregoing embodiment.
  • the manner of generating the reselected cell information based on the cell information may be any one of the following modes:
  • Manner 1 The reselection and the area information are generated according to the system message stored by the terminal.
  • the system message may include the information of the current cell where the pre-zone is located and/or the system message of the neighbor of the current cell.
  • the terminal may generate the reselected cell information according to the system messages of the system, for example, the terminal uses the neighboring cell information in the system message of the system as the reselected cell information.
  • the system message may be the cell reselection threshold and/or included in SIB3 and SIB4 included in the latest system message.
  • the cells in Smil and SIB12 are reselected, thus saving time for reading new system messages, thereby reducing the time for cell reselection.
  • the system message is the latest system message of the terminal.
  • the re-selected cell information is generated according to the neighboring cell list delivered by the network, and the neighboring cell column is generated according to the measurement report reported by the terminal or generated according to the pre-acquired neighboring cell information.
  • the terminal reports the measurement report to the network at regular intervals.
  • the network side generates a neighbor list according to the received measurement report, and the neighbor list is a special neighbor list.
  • the neighbor list includes information about each cell adjacent to the cell in which the terminal reselects the cell.
  • the number of cells included in the neighbor list is generally small, for example, including the first N cells with the best radio signal quality in the measurement report sent by the terminal, where N is an integer greater than 1, and may be, for example, 3, 5, or 10, specifically configured according to actual needs. In this way, since the range of cell reselection is reduced, the terminal can search for the d, the area, and initiate the connection with the reselected cell as soon as possible, and complete the cell reselection operation as soon as possible.
  • the neighbor list may also be generated based on the pre-acquired neighbor information. For example, when receiving the measurement report reported by another terminal, the network may obtain the neighboring area information of the current cell of the terminal; or manually configure the information of all the cells in the network, so that the network can also obtain the information. Neighbor information of the cell where the terminal is currently located.
  • the method before the reselecting the cell information according to the neighboring cell sequence i sent by the network, the method further includes: when the terminal is in the CELL-DCH state or the CELL-FACH state, receiving at least one of the following information: The area list, the system message of the current cell where the terminal is reselected, and the system message of the neighboring cell of the current cell.
  • the network can generate a neighbor list according to the measurement report reported by the terminal.
  • the measurement report is reported to the network.
  • the network When the network generates the neighbor list according to the measurement report, the terminal should generally be in the CELL-DCH state or the CELL-FACH state.
  • the neighbor list is directly sent to the terminal.
  • the status of the terminal changes, it will report to the network, because the network also knows the status of the terminal in real time.
  • the neighboring cell list may include information about the timing difference and/or the neighboring cell of the current cell and the neighboring cell where the winter terminal reselects the cell.
  • the timing difference may be the timing difference between the P-CCPCH (Primary Common Control Physical Channel) of the current location, the P-CCPCH of the target neighboring cell, and the uplink transmission timing of the terminal.
  • the neighboring cell list includes the timing difference between the neighboring cell and the cell where the terminal is currently located, and can add the cell search process of the central terminal.
  • the terminal can move to the signal of the target cell at which time point, so that the cell measurement can be completed quickly. Otherwise, it is necessary to perform cell search according to the prior art.
  • the process of searching for the prior art cell is briefly introduced: Is the slot synchronization: The Primary Synchronization Code (PSC) of the primary synchronization channel (P-SCH, Primaiy Synchronization Channel) is repeatedly transmitted in each time slot, and transmits a completely known sequence 'J for the terminal. Bit synchronization with UTRAN.
  • the second is frame synchronization: the synchronization code of the secondary synchronization channel (S-SCH, Second Synchronization Channel) is implemented, and the horse group of this ' ⁇ , zone is also determined.
  • P-CPICH Primary Common Pilot Channel
  • the network may send the neighbor list to the terminal at a certain time, and when the terminal receives the new neighbor list, the original neighbor list is replaced with a new neighbor list to protect the winter end.
  • the list of neighbors is the latest list of neighbors.
  • Manner 3 The reselection and the area information are generated according to the measurement report stored by the terminal.
  • the terminal may perform cell reselection according to the measurement report recorded by the cell before reselecting the cell, for example, according to cell information in the measurement report, such as cell scrambling code, cell signal quality, cell timing information, etc.
  • cell information in the measurement report such as cell scrambling code, cell signal quality, cell timing information, etc.
  • a cell with better signal quality preferentially performs cell reselection.
  • the terminal reports the measurement report to the network, and also records the measurement report in the terminal, thus forming a measurement report.
  • the wireless signal quality is ranked from the top to the top of the cell; the reselected cell information is generated according to the information of the previous cells, where ⁇ is an integer greater than 1.
  • the ⁇ here can be configured according to actual needs.
  • the measurement report in this mode is the latest measurement report.
  • the original active set cell in this mode refers to each cell that the terminal is connected before performing the reselection cell operation, and when the terminal connects each cell, various information of the corresponding cell is acquired, and the information is stored.
  • a terminal when a terminal connects multiple cells and needs to reselect a cell, it may be connected to one or a few cells that are connected before, so that when the terminal needs to reselect the cell, the terminal may first search. In the CELL-DCH state, the centralized cell is activated. If the terminal is connected to the cell in the active set, it is equivalent to reducing the time for reselecting the cell.
  • the active set cell information in the fourth mode is the latest active set cell information.
  • the terminal After acquiring the cell connection information according to the foregoing manner, the terminal sends the cell connection information according to the cell connection information.
  • the connection with the cell is established, and the connection operation with the cell is completed to restore the transmission of the service data.
  • the time for the terminal to read the system message can be reduced, or the time for the terminal to search for the cell can be reduced, thereby reducing the time for reselecting the cell.
  • the embodiment of the present invention provides a method for reselecting a cell, and the applicable network architecture is the same as that of the foregoing embodiment, and details are not described herein again.
  • the executor of this embodiment is a network, more specifically a network side device, such as a Radio Network Controller (RNC), a Base Station Controller (BSC), or an evolved NodeB (eNB). ).
  • RNC Radio Network Controller
  • BSC Base Station Controller
  • eNB evolved NodeB
  • Step 301 Generate a neighbor list according to the measurement report of the terminal and/or the neighboring cell information of the current cell where the terminal is located in advance.
  • the network may pre-fetch the neighboring cell information of the current cell in the case of 4 jins. For example, when receiving the measurement report reported by other terminal, the network may obtain the neighboring cell information of the current cell of the terminal; or manually The information of all the cells is configured on the network, so that the network can also obtain the neighbor information of the cell where the terminal is currently located.
  • the neighboring cell list is sent to the terminal, so that when the terminal needs cell reselection, the connection between the neighboring cell and the reselected cell is established, and the neighboring cell list contains information about the current cell of the winter end and/or Or neighborhood information.
  • the neighbor list includes information about each cell adjacent to the cell in which the terminal reselects the cell.
  • the number of cells included in the neighboring cell list is generally small, for example, including the first cell with the best radio signal quality in the measurement report sent by the terminal, where the ⁇ may be 3, 5, or 10, according to actual needs. Configuration. In this way, since the range of cell reselection is reduced, the terminal can search for the cell as soon as possible and initiate a connection with the reselected cell, and complete the cell reselection operation as soon as possible.
  • the neighbor list may also be generated based on the pre-acquired neighbor information.
  • the network when receiving the measurement report reported by another terminal, the network may obtain the neighboring area information of the current cell of the terminal; or manually configure the information of all the cells in the network, so that the network can also obtain the information. Neighbor information of the cell where the terminal is currently located.
  • the method further includes:
  • the terminal When the terminal is in the CELL_DCH state or the CELL_FACH state, it may receive at least one of the following information: a neighbor list, a system message of the current cell where the terminal reselects the cell, and a system message of the neighbor of the current cell.
  • the network can generate a neighbor list according to the measurement report reported by the terminal.
  • the measurement report is reported to the network.
  • the network When the network generates the neighbor list according to the measurement report, the terminal should generally be in the CELL-DCH state or the CELL-FACH state.
  • the neighbor list is directly sent to the terminal.
  • the status of the terminal changes, it will report to the network, because the network also knows the status of the terminal in real time.
  • the neighboring cell list may include the information of the timing difference and/or the neighboring cell of the current cell and the neighboring cell where the winter terminal reselects the cell, and the timing difference may be the P-CCPCH and the target neighbor of the current cell.
  • the timing difference between the P-CCPCHs of the areas may also be the timing difference between the terminal uplink transmission timing and the target neighboring cell P-CCPCH.
  • the neighboring cell list includes the timing difference between the neighboring cell and the cell where the terminal is currently located, which can speed up the cell search process of the terminal. This is because if the terminal knows the timing difference between the target cell and the current cell, the terminal can move to the signal that can be connected to the target cell at which point in time, thereby completing the cell measurement quickly.
  • slot synchronization The primary synchronization code repeats transmission in each time slot, and transmits a completely known sequence for Bit synchronization between the terminal and the UTRAN.
  • frame synchronization S-SCH synchronization code implementation, and at the same time «set the cell of this community.
  • 3 ⁇ 4 ⁇ is the main horse identification: The primary scrambling code of this cell is obtained through CPICH, and then the terminal can read the broadcast information.
  • the network generates a neighbor cell list for reselecting the cell according to the measurement report reported by the terminal, which can reduce the time for the terminal to search for the cell, thereby reducing the time for reselecting the cell, and completing the time as soon as possible. Connect the cell to avoid real dropped calls.
  • the embodiment provides a device for cell reselection, which is used to implement the first embodiment and the second embodiment.
  • the method of cell reselection can be integrated in the terminal.
  • FIG. 3 it is a schematic structural diagram of a device for cell reselection according to the present embodiment.
  • the device for reselection of the cell includes a generation module 401 and an initiation module 402.
  • the generating module 401 is configured to generate reselection cell information according to the cell information stored by the terminal when the terminal needs cell reselection; the initiating module 402 is connected to the generating module 401, and is used to initiate and reselect the cell according to the reselected cell information. The connection is established.
  • the generating module 401 of this embodiment is specifically configured to: when the terminal needs cell reselection, generate reselected cell information according to any one of the following manners:
  • Manner 1 The reselection 'area' and area information are generated according to the system messages of the winter end.
  • Manner 2 The re-selected cell information is generated according to the neighboring cell list delivered by the network, and the neighboring cell is generated according to the measurement report reported by the terminal or generated according to the pre-acquired neighboring cell information.
  • Manner 3 The reselection and the area information are generated according to the measurement report stored by the terminal.
  • Manner 4 generating the reselected cell information according to the activated set cell information of the winter end.
  • the device for cell reselection in this embodiment may be as shown in FIG. 4, and further includes a receiving module 501, where the receiving module 501 receives the following information. At least one of: a neighboring cell list, a system message of a current cell in which the terminal reselects the cell, and a system message of a neighboring cell of the current cell.
  • the cell reselection device in this embodiment may be as shown in FIG. 5, and the generating module 401 specifically includes the selecting submodule 601 and the generating submodule 602.
  • the selected sub-cap 601 is used to select the first cell in which the radio signal quality is ranked from the high to the bottom in the measurement report, where ⁇ is an integer greater than 1;
  • the generator 602 is respectively connected to the selection sub-module 601 and the initiator 402. And configured to generate reselection cell information according to information of the previous cells.
  • the measurement report is the latest measurement report.
  • the cell reselection device of the embodiment by acquiring the cell reselection information according to the cell information, the time for the terminal to read the system message can be reduced, or the time for the terminal to search for the cell can be reduced, thereby reducing the time for reselecting the cell, so as to complete the cell as soon as possible. Connect the cell to avoid real dropped calls.
  • This embodiment provides a device for cell reselection, which is applicable to the network architecture and the foregoing implementation. The examples are consistent and will not be described here.
  • the apparatus for cell reselection in this embodiment is used to perform a method of cell reselection of three, and the apparatus for reselecting the cell may be integrated in a device on the network side.
  • the apparatus for cell reselection in this embodiment includes generating a neighbor list module 701 and a sending module 702.
  • the neighboring cell list number 701 is used to generate a neighbor cell list according to the measurement report of the terminal and/or the neighbor cell information of the current cell where the pre-obtained terminal is located; the sending ⁇ 702 is connected with the generated neighboring cell list number 701,
  • the neighboring cell list includes information and/or neighboring cells of the current cell. information.
  • the neighbor list includes information about each cell adjacent to the cell in which the terminal reselects the cell.
  • the 702 may send at least one of the following information to the terminal: a neighbor list, a system message of the current cell where the terminal reselects the cell, and a system message of the neighbor of the current cell.
  • the specific operation method of the cell reselection device in this embodiment is the same as that in the foregoing embodiment, and details are not described herein again.
  • the network generates a neighboring cell list used by the terminal to reselect the cell according to the measurement report reported by the terminal, which can reduce the time for the terminal to search for the cell, thereby reducing the time for reselecting the cell, so as to complete the time as soon as possible. Connect the cell to avoid real dropped calls.
  • the terminal can include: at least one processor, and a memory for storing executable program code.
  • the processor generates reselection cell information according to the cell information stored by the terminal when the terminal needs cell reselection in the reading device; and initiates connection establishment with the reselected cell according to the reselected cell information.
  • the processor may generate reselection cell information according to the latest cell information in the following manner:
  • Manner 1 Generate reselection ', zone information according to the system message stored in the terminal.
  • the system message may include the winter terminal reselection, the current cell information in front of the zone, and/or the system message of the neighboring cell of the current cell.
  • the terminal may generate reselection cell information according to the system messages of the system, for example, the terminal uses the neighboring cell information in the system message of the connection as the reselection cell information.
  • the system message may be a cell reselection threshold and/or included in SIB3 and SIB4 included in the latest system message.
  • the cells in Smil and SIB12 are reselected, thus saving time for reading new system messages, thereby reducing the time for cell reselection.
  • the system message is the latest system message of the terminal.
  • Manner 2 The cell information is reselected according to the neighboring cell list delivered by the network, and the neighboring cell column is generated according to the measurement report reported by the terminal or generated according to the pre-acquired neighboring cell information.
  • the terminal reports the measurement report to the network at regular intervals.
  • the network side generates a neighbor list according to the received measurement report, where the neighbor list is a special neighbor list, and the neighbor list includes information about each cell adjacent to the cell in which the terminal reselects the cell.
  • the number of cells included in the neighbor list is generally small, for example, including the first N cells with the best radio signal quality in the measurement report sent by the terminal, where N is an integer greater than 1, and may be, for example, 3, 5, or 10, specifically configured according to actual needs.
  • the terminal can search for the d, the area and initiate the connection with the reselected cell as soon as possible, and complete the cell reselection operation as soon as possible.
  • the neighbor list may also be generated based on the pre-acquired neighbor information. For example, when receiving the measurement report reported by another terminal, the network may obtain the neighboring area information of the current cell of the terminal; or manually configure the information of all the cells in the network, so that the network can also obtain the information. Neighbor information of the cell where the terminal is currently located.
  • the processor in this embodiment is further configured to: when the terminal is in a CELL-DCH state or a CELL-FACH state, receive at least one of the following information: a neighbor list, and a system in which the terminal reselects the current cell where the cell is located Message, system message of the neighboring cell of the current cell.
  • the network can generate a neighbor list according to the measurement report reported by the terminal.
  • the measurement report is reported to the network.
  • the network When the network generates the neighbor list according to the measurement report, the terminal should generally be in the CELL-DCH state or the CELL-FACH state.
  • the neighbor list is directly sent to the terminal.
  • the status of the terminal changes, it will report to the network, because the network also knows the status of the terminal in real time.
  • the neighboring cell list may include information about the timing difference and/or the neighboring cell of the current cell and the neighboring cell where the winter terminal reselects the cell.
  • the timing difference may be a timing difference between a P-CCPCH of a current cell and a P-CCPCH of a target neighboring cell, or may be a timing difference between a terminal uplink transmission timing and a target neighboring cell P-CCPCH.
  • the neighboring cell list includes the timing difference between the neighboring cell and the cell where the terminal is currently located, which can speed up the cell search process of the terminal.
  • slot synchronization The primary synchronization code of the primary synchronization channel is repeatedly transmitted in each time slot, and the transmission is completely known. Sequence, used for bit synchronization between the terminal and the UTRAN.
  • the second is frame synchronization: the synchronization code of the secondary synchronization channel is implemented, and the group of this cell is also determined.
  • 3 ⁇ 4 ⁇ is the main horse identification: the main scrambling code of this ', zone' is obtained through CPICH, and then the terminal can read the wide channel.
  • the network may send the neighbor list to the terminal at a certain time, and when the terminal receives the new neighbor list, the original neighbor list is replaced with a new neighbor list to protect the winter end.
  • the list of neighbors is the latest list of neighbors.
  • Manner 3 Generate reselection cell information according to the measurement report stored by the terminal.
  • the terminal may perform cell reselection according to the measurement report recorded by the cell before reselecting the cell, for example, according to cell information in the measurement report, such as cell scrambling code, cell signal quality, cell timing information, etc.
  • cell information in the measurement report such as cell scrambling code, cell signal quality, cell timing information, etc.
  • a cell with better signal quality preferentially performs cell reselection.
  • the terminal reports the measurement report to the network, and also records the measurement report in the terminal, thus forming a measurement report.
  • the ear is measured in the winter end ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
  • the ⁇ here can be configured according to actual needs.
  • the measurement report in this mode is the latest measurement report.
  • the original active set cell in this mode refers to each cell that the terminal is connected before performing the reselection cell operation, and when the terminal connects each cell, various information of the corresponding cell is acquired, and the information is stored.
  • a terminal when a terminal connects multiple cells and needs to reselect a cell, it may be connected to one or a few cells that are connected before, so that when the terminal needs to reselect the cell, the terminal may first search. In the CELL-DCH state, the centralized cell is activated. If the terminal is connected to the cell in the active set, it is equivalent to reducing the time for reselecting the cell.
  • the active set cell information in the fourth mode is the latest active set cell information.
  • the terminal in this embodiment can reduce the time for the terminal to read the system message or reduce the time for the terminal to search for the cell, thereby reducing the time for the terminal to search for the cell, or the method for obtaining the cell reselection information by using the foregoing four different methods. Reselect the time of the cell to complete the connection of the cell as soon as possible to avoid real dropped calls.
  • the embodiment provides a network side device, and the network side device may include: at least one processor, and a memory for storing executable program code.
  • the processor is configured to: generate a neighboring cell list according to the measurement report of the terminal and/or the neighboring cell information of the current cell where the terminal is located; and send the neighboring cell list to the terminal, so that the terminal needs cell reselection, according to The connection between the neighboring cell and the reselected cell is established, and the neighboring cell list includes information about the cell in which the winter end is currently located and/or neighboring cell information.
  • the neighbor list includes information about each cell adjacent to the cell in which the terminal reselects the cell.
  • the device sends at least one of the following information to the terminal: a neighboring cell list, a system message of the current cell where the terminal reselects the cell, and a system message of the neighboring cell of the current cell. .
  • the network side device in this embodiment generates a neighboring cell list for reselecting a cell according to the measurement report reported by the terminal, so that the time for the terminal to search for the cell can be reduced, thereby reducing the time for reselecting the cell, and completing the cell connection as soon as possible. Avoid real dropped calls.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment description, or the corresponding changes may be located in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are only for example, the division of the module or unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or 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 separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over 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 application 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 above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a removable 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

本发明实施例提供一种小区重选的方法和设备，包括：当终端需小区重选时，根据终端存储的小区信息生成重选小区信息；根据所述重选小区信息，发起与重选的小区的连接建立。根据本发明的小区重选的方法和设备，当终端需要重新选取小区建立相应的连接时，根据已经获取的小区信息生成重选小区信息，这样，终端就可以省去获取重选小区信息的时间，从而加快小区重选过程，尽快发起与小区的连接建立，进一步地尽快完成与小区的连接操作，以恢复业务数据的传输。

Description

小区重选的方法和设备
技术领域 本发明涉及无线通信技术， 尤其涉及一种小区重选的方法和设备。 背景技术
随着智能终端的普及， 并发业务（MuM RAB )越来越被广泛应用。 并发 业务指的是 WCDMA ( Wideband Code Division Multiple Access, 宽带码分多 址） 支持多业务同时进行， 可以实现智能终端的语音与上网同时使用。
但是如果并发业务中的智能终端的 PS ( Packet Switch, 分组交换）域的 数据业务频繁发起， 会导致 CS ( Circuit Switch, 电路交换）域语音业务的掉 话率逐渐升高。 这是由于， PS域的数据业务与 CS域的语音业务使用同一个 SRB2 (信令无线 载， Signaling Radio Bear ) , 这样当 PS 域的数据业务 频繁发生 RRC信令交互时，有可能会导致 CS域语音业务的掉话。 CS域语音 业务掉话之后， 终端会进行重新选取小区的操作， 如果终端在短时间内能够 重新接入网络， 恢复正常的 CS业务， 则可以看作 CS域没有掉话， 否则就会 认为 CS域发生掉话。 具体地， 终端在检测到 SRB发生 RUE ( Radio Link Control Unrecoverable Error, RLC非可恢复性错误 )之后， 会先接收网络发送 的***消息， 读取该***信息以获取重选信息， 并根据相关协议进行重选小 区。 具体地， 先测量原使用频点的全部小区， 如果该频点的所有小区均不满 足条件， 就会继续测量异频点的全部小区， 或者异***的全部小区， 这样， 如果终端搜索小区的时间过长， 会导致终端真正掉话。 发明内容 本发明的多个方面提供一种小区重选的方法和设备， 以解决现有技术 中终端在重选小区时搜索时间过长的问题。
本发明第一个方面提供一种小区重选的方法， 包括： 当终端需小区重 选时， 根据所述终端存储的小区信息生成重选小区信息； 根据所述重选小 区信息， 发起与重选的小区的连接建立。 在第一种可能的实现方式中， 根据第一方面， 所述根据所述终端存储 的小区信息生成重选小区信息包括：
根据所 ^冬端 诸的***消息生成所述重选小区信息； 或
根据网络下发的邻区列 ±成所述重选小区信息， 所述邻区列表是根据所 冬 端上报的测量报告生成的或者是根据预先获取的邻区信息生成的； 或
根据所 ^冬端 诸的测量报告生成所述重选 '〗、区信息； 或
根据所 ^冬端 诸的激活集 d、区信息生成所述重选 d、区信息。
在第二种可能的实现方式中， 结合第一方面或第一种可能的实现方 式，所述***消息包括所述终端重选小区前所在的当前小区的信息和 /或所 述当前小区的邻区的***消息。
在第三种可能的实现方式中， 结合第一方面或第一种可能的实现方式 或第二种可能的实现方式， 当所述终端处于 CELL— DCH状态或
CELL— FACH状态时， 接收下列信息中的至少一种： 邻区列表、 所述终端 重选小区前所在的当前小区的***消息、 所述当前小区的邻区的***消 息。
在第四种可能的实现方式中， 结合第一方面或第一种可能的实现方式 至第三种可能的实现方式， 所述邻区列表中包括所述终端重选小区前所在 的当前小区与邻区的定时差和 /或所述邻区的信息。 。
在第五种可能的实现方式中， 结合第一方面或第一种可能的实现方式 至第四种可能的实现方式， 所述根据所述终端存储的测量报告生成所述重选小 区信息包括：
选耳 斤^冬端^ ί诸的测量报告中无线信号质量从高到底排列的前 N个小区， 其 中 Ν为大于 1的整数；
根据所述前 Ν个小区的信息生成重选'〗、区信息。
本发明第二方面提供一种小区重选的方法， 包括： 根据终端的测量报告和 / 或预先获取的所 冬端所在的当前小区的邻区信息生成邻区列表； 向所 冬端下发 所述邻区列表， 以使所 冬端需小区重选时， 根据所述邻区列 与重选的小区 的连接建立， 所述邻区列表中包括所 冬端当前所在'〗、区的信息和 /或邻区信息。
在第一种可能的实现方式中， 根据第二方面， 所述邻区列表中包括所^冬端重 选小区前所在的当前小区与邻区的定时差和 /或所述邻区的信息。 本发明第三方面提供一种小区重选的装置， 包括： 生成模块， 用于当 终端需小区重选时， 根据所述终端存储的小区信息生成重选小区信息； 发 起模块， 用于根据所述重选小区信息， 发起与重选的小区的连接建立。
在第一种可能的实现方式中，结合第三方面，所述生成模块具体用于， 当终端需小区重选时， 按照以下任一种方式生成重选小区信息： 根据所述 终端^ ί诸的***消息生成所述重选小区信息； 或
根据网络下发的邻区列 i成所述重选小区信息， 所述邻区列表是根据所 冬 端上报的测量报告生成的或者是根据预先获取的邻区信息生成的； 或
根据所 ^冬端 诸的测量报告生成所述重选 '〗、区信息； 或
根据所述终端存储的激活集'〗、区信息生成所述重选 '〗、区信息。
在第二种可能的实现方式中， 结合第三方面或第一种可能的实现方式， 所述小 区重选的装置还包括： 接收模块， 用于当所述终端处于 CELL— DCH状态或 CELL— FACH状态时， 接收下列信息中的至少一种： 邻区列表、 所述终端重选小区 前所在的当前小区的***消息、 所述当前 d、区的邻区的***消息。
在第三种可能的实现方式中， 结合第三方面或第一种可能的实现方式或第二种 可能的实现方式， 当所述生成模块具体用于， 当终端需小区重选时根据所 ^冬 端^ ί诸的测量报告生成所述重选小区信息时， 所述生 ^數包括：
选取子才數， 用于选取所 冬端 的测量报告中无线信号质量从高到底排列 的前 Ν个小区， 其中 Ν为大于 1的整数；
生成子模块， 用于根据所述前 Ν个小区的信息生成重选小区信息。
本发明第四方面提供一种小区重选的装置， 包括： 生成邻区列表模块， 用于根据终端的测量报告和 /或预先获取的所 ^冬端所在的当前小区的邻区信息生成 邻区列表； 发送 ¾ 用于向所 ^冬端下发所述邻区列表， 以使所 ^冬端需小区重 选时， 根据所述邻区列 ½^与重选的小区的连接建立， 所述邻区列表中包括所述 终端当前所在 d、区的信息和 /或邻区信息。
本发明第五方面提供一种终端， 包括： 至少一个处理器， 以及存储器， 所 述^ ί诸器用于^ ί诸可 1^亍程序 ^马， 其中， 所^:理器通过读耳 斤述^ ί诸器中 诸 区重选时， 根据所述终端存储的小区信息生成重选小区信息； 根据所述重 选小区信息发起与重选的小区的连接建立。 本发明第六方面提供一种网络侧设备， 包括： 至少一个处理器， 以及存储 器， 所述^ ί诸器用于^ ί诸可 1^亍程序 ^ , 其中， 所^:理器通过读耳 斤述^ ί诸器 终端的测量报告和 /或预先获取的所述终端所在的当前小区的邻区信息生成邻区列 表； 向所 冬端下发所述邻区列表， 以使所 冬端需小区重选时， 根据所述邻区列 ^与重选的小区的连接建立， 所述邻区列表中包括所 冬端当前所在小区的信 息和 /或邻区信息。
由上述技术方案可知， 本发明提供的小区重选的方法和设备， 当终端 需要重新选取小区建立相应的连接时， 根据已经获取的小区信息生成重选 小区信息， 这样， 终端就可以省去获取重选小区信息的时间， 从而加快小 区重选过程， 尽快发起与小区的连接建立， 进一步地尽快完成与小区的连 接操作， 以恢复业务数据的传输。 附图说明
实施例或现有技术描述中所需要使用的附图作一简单地介绍， 显而易见 地， 下面描述中的附图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为本发明一实施例的小区重选的方法的流程示意图；
图 2为本发明另一实施例的小区重选的方法的流程示意图；
图 3为本发明又一实施例的小区重选的装置的结构示意图；
图 4为本发明再一实施例的小区重选的装置的结构示意图；
图 5为本发明另一实施例的小区重选的装置的结构示意图；
图 6为本发明又一实施例的小区重选的装置的结构示意图。
具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 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。 本文中描述的各 种技术可用于各种无线通信***， 例如当前第二代移动通信 （2nd
Generation; 以下简称： 2G ) ***、 第三代移动通信 （ 3rd Generation; 以 下简称： 3G ) ***和下一代通信***； 举例来说， 上述无线通信***可以 为： 全球移动通信 ( Global System for Mobile communications; 以下简称： GSM )***、码分多址（ Code Division Multiple Access; 以下简称： CDMA ) ***、 时分多址 ( Time Division Multiple Access; 以下简称： TDMA ) 系 统、 宽带码分多址 ( Wideband Code Division Multiple Access Wireless; 以 下简称： WCDMA ) ***、 频分多址 （ Frequency Division Multiple
Addressing; 以下简称： FDMA ) ***、 正交频分多址 （ Orthogonal Frequency-Division Multiple Access; 以下简称： OFDMA ) ***、 单载波 FDMA ( Single Carrier-FDMA; 以下简称： SC-FDMA ) ***、 通用分组无 线业务（ General Packet Radio Service； 以下简称： GPRS ) ***或长期演 进（ Long Term Evolution; 以下简称： LTE ) ***， 以及其他此类通信系 统。 本文中结合终端和 /或基站和 /或基站控制器来描述各种方面。
用户设备， 可以是无线终端也可以是有线终端， 无线终端可以是指向 用户提供语音和 /或数据连通性的设备， 具有无线连接功能的手持式设备、 或连接到无线调制解调器的其他处理设备。 无线终端可以经无线接入网 (例如： Radio Access Network; 简称： RAN )与一个或多个核心网进行通 信； 无线终端可以是移动终端， 如移动电话（或称为 "蜂窝" 电话）和具 有移动终端的计算机， 例如， 可以是便携式、 袖珍式、 手持式、 计算机内 置的或者车载的移动装置， 它们与无线接入网交换语言和 /或数据。举例来 说，上述无线终端可以为：个人通信业务（ Personal Communication Service; 以下简称： PCS )电话、无绳电话、会话发起协议（ Session Initiation Protocol; 以下简称： SIP )话机、 无线本地环路（ Wireless Local Loo ； 以下简称： WLL ) 站、 个人数字助理 （ Personal Digital Assistant; 以下简称： PDA ) 等设备。 无线终端也可以称为***、 订户单元 （ Subscriber Unit ) 、 订户 站 （ Subscriber Station ) , 移动站 （ Mobile Station ) 、 移动台 （Mobile ) 、 远程站 （ Remote Station ) 、 接入点 （ Access Point ) 、 远程终端 （ Remote Terminal ) 、 接入终端 ( Access Terminal ) 、 用户终端 ( User Terminal ) 、 用户代理 （User Agent ) 、 用户设备（ User Device ) 或用户装备 ( User Equipment ) 等。
基站（例如， 接入点）可以是指接入网中在空中接口上通过一个或多 个扇区与无线终端通信的设备。 基站可用于将收到的空中帧与网际协议 ( Internet Protocol; 以下简称： IP ) 分组进行相互转换， 作为无线终端与 接入网的其余部分之间的路由器， 其中接入网的其余部分可包括 IP网络。 基站还可协调对空中接口的属性管理。 例如， 基站可以是 GSM或 CDMA 中的基站（ Base Transceiver Station; 以下简称： BTS ) ,也可以是 WCDMA 中的基站 （ NodeB ) , 还可以是 LTE中的演进型基站 （ NodeB或 eNB或 e-NodeB ) , 本申请并不限定。 其中， eNB或 e-NodeB为演进型基站 ( evolutional NodeB ) 的简称。
基站控制器， 可以是 GSM或 CDMA中的基站控制器 （ Base Station Controller; 以下简称： BSC ) , 也可以是 WCDMA中的无线网络控制器 ( Radio Network Controller; 以下简称： RNC ) , 本申请并不限定。
另外， 本文中术语 "***，， 和 "网络，， 在本文中常可被互换使用。 本 文中术语 "和 /或" ， 仅仅是一种描述关联对象的关联关系， 表示可以存在 三种关系， 例如： A和 /或 B, 可以表示： 单独存在 A, 同时存在 A和 B , 单独存在 B这三种情况。 另外， 本文中字符 "/" , 一般表示前后关联对 象是一种 "或" 的关系。
终端一般具有五个状态： Idle (空闲） 状态、 CELL— DCH
( CELL— Dedicated Channel,小区专用信道） 状态、 CELL— FACH
( CELL_Forward Access Channel , 小区前向接入信道） 状态以及
CELL PCH ( CELL— Paging Channel, 小区寻呼信道）状态。
其中， CELL— DCH状态的基本特征是， 终端被分配了用于传输数据的 专用的物理信道， 除了上下行专用的物理信道（ Dedicated Physical
Channel, DPCH ) 夕卜， 终端还可能被分配物理上下行共享信道 PUSCH ( Physical Uplink Shared Channel )和 /或 PDSCH( Physical Downlink Shared Channel ) , 才艮据 UTRAN ( Universal Mobile Telecommunications System Terrestrial Radio Access Network, 通用移动通信***陆地无线接入网） 的 分配情况，终端可以使用专用传输信道、上行共享传输信道（Uplink Shared Channel, USCH ) 、 下行共享传输信道（ High-Speed Downlink Shared Channel, DSCH ) , 以及这些传输信道的组合。 终端处于 CELL— DCH状 态时且处于同频小区交接处时， 可以把无线信号质量满足要求的同频邻区 上报网络侧，网络侧把对应的同频小区配置终端加入激活集。 CELL— FACH 状态的基本特征是， 终端与 UTRAN之间不存在用于传输数据的专用物理 信道连接， 终端在下行方向将连续监视 FACH传输信道， 而在上行方向可 以使用公共或共享传输信道。 UTRAN将把***信息的变化通过相应的调 度信息在 FACH上及时地广播给终端， 以便终端重新读取相应的***信 当 CS域的终端检测到 SRB2发生 RUE时， 就从 CELL— DCH状态转 为非 CELL— DCH状态， 终端在非 CELL— DCH状态中进行重选小区操作， 当进行重选小区的操作达到一定时间还没有完成重选小区的操作， 终端真 正掉话。
具体地， 当终端重传一个 PDU超过一定数量时、 发送窗口达到最大 窗口时或收到接收方发送的包含错误的序列号 （ Sequence Number ) 的 Status PDU (状态协议数据单元， Status Protocol Data Unit ) 时， 终端发起 RLC Reset过程，即向底层发送一个 Reset PDU ( Reset Protocol Data Unit, 重置协议数据单元）， 并启动相应的定时器， 如果在定时器规定的时间内， 终端收到了对应该 Reset PDU中的 Reset ACK( acknowledgement character, 确认字符） PDU, 即两者的 RSN ( Reset Sequence Number, 重置序列号） 相同时，则定时器停止，否则重新发送 Reset PDU。由于 SRB2的最多 Reset 次数为 1 , 因此如果终端发起 RLC Reset过程， 并且在定时器规定的时间 内没有接收到相应的 ACK PDU, 则确定检测到 SRB2发生 RUE。
终端检测到 SRB2发生 RUE之后， 会尽快进行重选小区的操作。 这 是由于， 终端在非 CELL— DCH状态不能进行类似于通话的大量数据的传 输， 因此需要尽快完成小区的重选操作， 以从非 CELL— DCH状态回到 CEI — DCH状态。
具体地， 终端根据网络侧下发的***消息（ System Information Block, SIB ) 重新选择小区， ***消息中可以有多种***消息元素， 具体如下：
SB1、 SB2: SIB的调度信息; SIB1 : NAS ( Non Access Stratum, 非 接入层）层的***信息和终端定时器 /计数器； SIB2: URA(UTRAN
Registration Area, 注册区）的信息； SIB3: 用于小区选择和重选的参数； SIB4: 连接模式下用于小区选择和重选的参数； SIB5: 用于小区公共物理 信道配置的参数； SIB6: 连接模式下用于小区公共物理信道配置的参数； SIB7: 上行链路干扰和动态持续电平等信息； SIB8、 SIB9、 SIB10: 用于 WCDMA ( Wideband Code Division Multiple Access, 宽带码分多址）***； SIB11 : 测量控制信息， 即邻区列表 SIB12: 连接模式下的测量控制信息， 即邻区列表； SIB13、 SIB14: 用于 WCDMA***； SIB15: 用于定位业务 的信息； SIB16: GSM-TD-SCDMA( Global System of Mobile communication- Time Division- Synchronous Code Division Multiple Access,全球移动通讯系 统-时分同步的码分多址技术） ***间切换所需要的预配置信息； SIB17: 连接模式下共享物理信道的配置信息； SIB18: 邻近小区 PLMN信息， 用 于运营商网络共享。 终端在做任何一个动作的时候， 都会发送***消息给 RNC ( Radio Network Controller , 无线网络控制器） ， ***消息就相当于 终端与基站之间的指令。
实施例一
本实施例提供一种重选小区的方法， 用于在终端检测到发生 RUE时， 能够尽快完成小区的重选。 本实施例适用于现有的 GSM、 UMTS网络、 LTE ( Long Term Evolution, 长期演进项目 ) 4G。 本实施例的执行主体为 终端。
如图 1所示， 为根据本实施例的重选小区的方法的流程示意图。
步骤 101 , 当终端需小区重选时， 根据终端存储的小区信息生成重选 小区信息。
当终端检测自身到发生 RUE时， 终端开始小区重选操作。 小区重选 的目的是使终端重新与小区连接， 并恢复 CS域的业务， 即终端需要重建 SRB2并重新获取专用信道，也就是说使终端从非 CELL— DCH状态重新转 为 CELL— DCH状态。 这里的终端重选的小区也许是与发生 RUE时的小区 相同， 也可以是与发生 RUE时的小区不同。 该重选小区信息中包括终端发起与小区连接： 小区标识、 小区偏置、 邻区扰码和邻区导频等， 终端根据该重选小区信息就能够重新连接到小 区， 终端如何根据重选小区信息重选小区均为现有技术， 在此不再赘述。
i^E'J、区信息可以是终端在需重选'〗、区之前接^ 'j的***消息中包含的重选 d、 区信息，或者是终端之前接^ ^的网络侧下发的小区信息或 4 则到的邻区小区信息， 也就是说该'〗、区消息是终端需重选'〗、区时已经^ ί诸在终端内部的小区消息， 即终端 已知的小区信息。 本实施例中优选釆用最新^ ^的重选小区信息， 这样可以尽量保 证小区信息的可用性。 的最新接^ ^的重选小区信息， 指的是与终端^^则到 发生 RUE时时间最近的小区信息。 该小区信息是^ ί诸在终端中的。
步骤 102, 根据重选小区信息， 发起与重选的小区的连接建立。
终端发起与小区的连接， 即从非 CELL— DCH状态重新转为
CELL DCH状态， 以恢复原来的业务。
本实施例中， 当终端需要重新选取小区建立相应的连接时， 根据已经 获取的小区信息生成重选小区信息， 这样， 终端就可以省去获取重选小区 信息的时间， 从而加快小区重选过程， 尽快发起与小区的连接建立， 进一 步地尽快完成与小区的连接操作， 以恢复业务数据的传输。
实施例二
本实施例基于上述实施例提供一种小区重选的方法， 主要对上述实施 例中的步骤 101做进一步具体的说明。
该根据的小区信息生成重选小区信息的方式可以为下列方式中的任 何一种：
方式一： 根据所述终端存储的***消息生成所述重选 '〗、区信息。
***消息可以包^^冬端重选'〗、区前所在的当前小区的信息和 /或当前小区的邻 区的***消息。 终端可以根据自身^ ί诸的***消息生成重选小区信息， 例如终端将 接^^的***消息中的邻区信息作为重选小区信息。 地， ***消息可以是包含 在最新接^ ^的***消息中的 SIB3和 SIB4中的小区重选门卩^ 和 /或包含在
Smil和 SIB12中的小区重选列^^ t, 这样就节省了读取新的***消息的时间， 从而减少了小区重选的时间。 优选地， ***消息为终端接^ ^的最新***消息。
方式二： 根据网络下发的邻区列 i成所述重选小区信息， 所述邻区列 根 据所述终端上报的测量报告生成的或者是根据预先获取的邻区信息生成的。 终端每隔一定的时间就向网络上报测量报告。网络侧根据接收到的测 量报告生成邻区列表， 该邻区列表是一种特殊的邻区列表。 该邻区列表中 包括与终端重选小区之前所在小区的相邻的各个小区的信息。 该邻区列表 中包含的小区个数一般较少， 例如包括终端发送的测量报告中的无线信号 质量最好的前 N个小区， 这里的 N为大于 1的整数， 例如可以是 3、 5或 10, 具体根据实际需要进行配置。 这样， 由于减小了小区重选的范围， 终 端可以尽快搜索到 d、区并发起与重选的小区的连接， 尽快完成小区重选操 作。
邻区列表也可是根据预先获取的邻区信息生成的。 例如， 网络在接收 到其它终端上报的测量报告时， 可以获取到相应的该终端当前所在小区的 邻区信息； 或者是由人工预先在网络配置所有小区的信息， 这样， 网络也 可获取到该终端当前所在小区的邻区信息。
本实施例中， 在根据网络下发的邻区列 i成重选小区信息之前， 还包括： 当终端处于 CELL— DCH状态或 CELL— FACH状态时，可以接收下列信息中的 至少一种： 邻区列表、 终端重选小区前所在的当前小区的***消息、 当前小区的邻 区的***消息。
网络可以根据终端上报的测量报告生成邻区列表。 由于实际运行中， 终端处 于 CELL— DCH状态或 CELL— FACH状态时才会向网络上报测量报告， 网 络根据测量报告生成邻区列表的时候， 终端一般就应该处于 CELL— DCH 状态或 CELL— FACH状态， 此时直接向终端下发邻区列表。 另外， 终端的 状态进行改变时， 都会向网络上报， 因为， 网络也是实时的得知终端所在 的状态。
优选地，该邻区列表中可以包 4 冬端重选小区前所在的当前小区与邻区的 定时差和 /或邻区的信息。 该定时差可以为当前所在 '〗、区的 P-CCPCH ( Primary Common Control Physical Channel, 主 ^共控制物理信道 )和目标邻区的 P-CCPCH 之间的定时差，也可以为终端上行传输定时与目标邻区 P-CCPCH之间的定时差。邻 区列表中包括邻区与终端当前所在小区的定时差， 可以加 !·央终端的小区搜索过程。 这是由于如 冬端知道了目标小区与当前所在小区的定时差， 终端就可以在哪个时 间点 索窗移动到可以接^ ^目标小区的信号， 从而很快完成小区测量。 否则就 需要按照现有技术进行小区搜索， 这里简单介绍下现有技术小区搜索的过程： 首先 是时隙同步： 主同步信道（P-SCH, Primaiy Synchronization Channel )的主同步码 (Primary Synchronization Code, PSC)在每个时隙内重复发射， 传送完全确知的序歹 'J , 用于终端与 UTRAN之间的比特同步。 其次是帧同步： 辅同步信道（S-SCH, Second Synchronization Channel )的同步码实现， 同时也确定了这个'〗、区的 马组。
是主^马识别 ( Primary Common Pilot Channel , P-CPICH )： 通过 CPICH
( Common Pilot Channel, 公共导频信道）获得这个小区的主 马， 冬端就可以 读广播信道。
优选地， 网络可以每隔一定时间向终端下发邻区列表， 终端在接^ ^新的邻区 列表时， 就将原有的邻区列表替换为新的邻区列表， 以保 冬端所 诸的邻区列表 是最新的邻区列表。
方式三： 根据所述终端存储的测量报告生成所述重选 '〗、区信息。
与方式二不同的是， 终端可以自^ 据重选小区前自身记录的测量报告进行小 区重选， 例如根据测量报告中的小区信息， 例如小区扰码， 小区信号质量， 小区定 时信息等， 选择信号质量较好的小区优先进行小区重选。 终端向网络上报测量报告 ^， 也将该测量报告^ ί诸在终端中， 这样就形成了测量报告。
具体地:选耳 冬端^ ί诸的测量报告中无线信号质量从高到底排列的前 Ν个小区； 根据前 Ν个小区的信息生成重选小区信息， 其中 Ν为大于 1的整数。
这里的 Ν可以根据实际需要进行配置。
ύ ^地， 本方式中的测量报告为最新的测量报告。
方式四：
根据终端存储的激活集'〗、区信息生成重选 '〗、区信息。
本方式中的原激活集小区指的是终端在进行重选小区操作之前正在 连接的各小区， 终端连接各小区时会获取到相应小区的各种信息， 并将这 些信息存储起来。 根据统计， 现有技术中终端在连接多个小区且需重选小 区时， 极大可能会连接到之前连接的某个或某几个小区， 这样， 终端需重 选小区时， 就可以首先搜索 CELL— DCH状态时激活集中的小区， 如果终 端就是与激活集中的小区进行连接时， 就相当于是减少了重选小区的时 间。
优选地， 本方式四中的激活集小区信息为最新的激活集小区信息。 终端在根据上述方式获取到小区连接信息之后， 根据小区连接信息发 起与小区的连接建立，并完成与小区的连接操作，以恢复业务数据的传输。 本实施例的小区重选的方法， 通过上述四种不同的获取小区重选信息 的方法，能够减少终端读取***消息的时间，或减少终端搜索小区的时间， 从而减少重选小区的时间， 以尽快完成小区的连接， 避免真正掉话。
本领域普通技术人员可以理解： 实现上述方法实施例的全部或部分步 骤可以通过程序指令相关的硬件来完成， 前述的程序可以存储于一计算机 可读取存储介质中， 该程序在执行时， 执行包括上述方法实施例的步骤； 而前述的存储介质包括： ROM、 RAM, 磁碟或者光盘等各种可以存储程 序代码的介质。
实施例三
本实施例提供一种小区重选的方法， 其所适用的网络架构与上述实施 例一致， 在此不再赘述。
如图 2所示， 为根据本实施例的小区重选的方法的流程示意图。 本实 施例的执行主体为网络， 更为具体地为网络侧设备， 例如无线网络控制器 ( Radio Network Controller, RNC )、基站控制器（ Base Station Controller, BSC ) 或演进型基站 （ evolved NodeB , eNB ) 。
步骤 301 , 根据终端的测量报告和 /或预先获取的终端所在的当前小区的邻区 信息生成邻区列表。
终端如何上报测量报告为 技术， 在此不再赘述。 网络可以预先菝取 4 斤 在的当前小区的邻区信息， 例如， 网络在接收到其它终端上报的测量报告时， 可以获取到相应的该终端当前所在小区的邻区信息； 或者是由人工预先在 网络配置所有小区的信息， 这样， 网络也可获取到该终端当前所在小区的 邻区信息。
步骤 302, 向终端下发邻区列表， 以使终端需小区重选时， 根据邻区列 ^ 与重选的小区的连接建立,邻区列表中包^ έ冬端当前所在小区的信息和 /或邻区信息。
该邻区列表中包括与终端重选小区之前所在小区的相邻的各个小区的 信息。 该邻区列表中包含的小区个数一般较少， 例如包括终端发送的测量 报告中的无线信号质量最好的前 Ν个小区， 这里的 Ν可以是 3、 5或 10, 具体根据实际需要进行配置。 这样， 由于减小了小区重选的范围， 终端可 以尽快搜索到小区并发起与重选的小区的连接， 尽快完成小区重选操作。 邻区列表也可是根据预先获取的邻区信息生成的。 例如， 网络在接收 到其它终端上报的测量报告时， 可以获取到相应的该终端当前所在小区的 邻区信息； 或者是由人工预先在网络配置所有小区的信息， 这样， 网络也 可获取到该终端当前所在小区的邻区信息。
本实施例中， 还包括：
当终端处于 CELL— DCH状态或 CELL— FACH状态时，可以接收下列信息中的 至少一种： 邻区列表、 终端重选小区前所在的当前小区的***消息、 当前小区的邻 区的***消息。
网络可以根据终端上报的测量报告生成邻区列表。 由于实际运行中， 终端处 于 CELL— DCH状态或 CELL— FACH状态时才会向网络上报测量报告， 网 络根据测量报告生成邻区列表的时候， 终端一般就应该处于 CELL— DCH 状态或 CELL— FACH状态， 此时直接向终端下发邻区列表。 另外， 终端的 状态进行改变时， 都会向网络上报， 因为， 网络也是实时的得知终端所在 的状态。
优选地，该邻区列表中可以包 4 冬端重选小区前所在的当前小区与邻区的 定时差和 /或邻区的信息，该定时差可以为当前所在小区的 P-CCPCH和目标邻区的 P-CCPCH之间的定时差， 也可以为终端上行传输定时与目标邻区 P-CCPCH之间的 定时差。 邻区列表中包括邻区与终端当前所在小区的定时差， 可以加快终端的小区 搜索过程。 这是由于如果终端知道了目标小区与当前所在小区的定时差， 终端就可 以在哪个时间点 索窗移动到可以接^ ^目标小区的信号， 从而很快完成小区测 量。 否则就需要按照现有技术进行小区搜索， 这里简单介绍下现有技术小区搜索的 过程： 首先是时隙同步： 主同步码在每个时隙内重复发射， 传送完全确知的序列， 用于终端与 UTRAN之间的比特同步。 其次是帧同步： S-SCH的同步码实现， 同时 «定了这个小区的 马组。 ¾ ^是主 马识别： 通过 CPICH获得这个小区的 主扰码， 随后终端就可以读广播信息。
根据本实施例的小区重选的方法， 网络通过根据终端上报的测量报告 生成终端用于重选小区的邻区列表， 能够减少终端搜索小区的时间， 从而 减少重选小区的时间， 以尽快完成小区的连接， 避免真正掉话。
实施例四
本实施例提供一种小区重选的装置， 用于实现实施例一和实施例二的 小区重选的方法。 该小区重选的装置可集成在终端中。
如图 3所示， 为根据本实施例的小区重选的装置的结构示意图。 该小 区重选的装置包括生成模块 401和发起模块 402。
其中， 生成模块 401用于当终端需小区重选时， 根据终端存储的小区 信息生成重选小区信息； 发起模块 402与生成模块 401连接， 用于根据重 选小区信息， 发起与重选的小区的连接建立。
可选地， 本实施例的生成模块 401具体用于当终端需小区重选时， 按 照以下任一种方式生成重选小区信息：
方式一： 根据所 ^冬端 诸的***消息生成所述重选 '〗、区信息。
方式二： 根据网络下发的邻区列 i成所述重选小区信息， 所述邻区列 根 据所述终端上报的测量报告生成的或者是根据预先获取的邻区信息生成的。
方式三： 根据所述终端存储的测量报告生成所述重选 '〗、区信息。
方式四： 根据所 ^冬端 诸的激活集小区信息生成所述重选小区信息。
上述方式可以如的 述与上述实施例中所描述的一致， 在此不再赞述。 可选地， 当生成模块 401釆用方式二生成重选小区信息时， 本实施例 的小区重选的装置可如图 4所示， 还包括接收模块 501 , 该接收模块 501 接收下列信息中的至少一种： 邻区列表、 终端重选小区前所在的当前小区的***消 息、 当前小区的邻区的***消息。
可选地， 当生^ 401釆用方式三生成重选小区时， 本实施例的小区重选的 装置可如图 5所示,生成模块 401具体包括选取子模块 601和生成子模块 602。其中， 选取子才數 601用于选取测量报告中无线信号质量从高到底排列的前 Ν个小区， 其 中 Ν为大于 1的整数;生成子才 602分别与选取子模块 601和发起才 402连接, 用于根据前 Ν个小区的信息生成重选小区信息。 优选地， 该测量报告为最新的测量 报告。
根据本实施例的小区重选的装置， 通过根据小区信息获取小区重选信 息， 能够减少终端读取***消息的时间， 或减少终端搜索小区的时间， 从 而减少重选小区的时间， 以尽快完成小区的连接， 避免真正掉话。
实施例五
本实施例提供一种小区重选的装置， 其所适用的网络架构与上述实施 例一致， 在此不再赘述。 本实施例的小区重选的装置用于执行三的小区重 选的方法， 该小区重选的装置可以集成在网络侧的设备中。
如图 6所示， 本实施例的小区重选的装置包括生成邻区列表模块 701和 发送模块 702。 其中， 生成邻区列表才數 701用于根据终端的测量报告和 /或预先 获取的终端所在的当前小区的邻区信息生成邻区列表； 发送^ 702与生成邻区列 表才數 701连接， 用于向终端下发邻区列表， 以使终端需小区重选时， 根据邻区列 ^与重选的小区的连接建立， 邻区列表中包^^端当前所在小区的信息和 /或邻 区信息。
优选地， 邻区列表中包括与终端重选小区之前所在小区的相邻的各个 小区的信息。 才 702可以向终端发送下列信息中的至少一种： 邻区列表、 终端重选小区前所在 的当前小区的***消息、 当前小区的邻区的***消息。本实施例的小区重选的装 置的具体操作方法与上述实施例一致， 在此不再赘述。
根据本实施例的小区重选的装置， 网络通过根据终端上报的测量报告 生成终端用于重选小区的邻区列表， 能够减少终端搜索小区的时间， 从而 减少重选小区的时间， 以尽快完成小区的连接， 避免真正掉话。
实施例六
本实施例提供一种终端。 该终端可以包括： 至少一个处理器， 以及存 储器， 该存储器用于存储可执行程序代码。 其中， 处理器通过读耳^诸器中 当终端需小区重选时， 根据终端存储的小区信息生成重选小区信息； 根据重选小区信息， 发起与重选的小区的连接建立。
其中， 处理器可以通过以下方式根据最新的的小区信息生成重选小区 信息：
方式一： 根据终端存储的***消息生成重选 '〗、区信息。
***消息可以包^^冬端重选'〗、区前所在的当前小区的信息和 /或当前小区的邻 区的***消息。 终端可以根据自身^ ί诸的***消息生成重选小区信息， 例如终端将 接^^的***消息中的邻区信息作为重选小区信息。 地， ***消息可以是包含 在最新接^ ^的***消息中的 SIB3和 SIB4中的小区重选门卩^ 和 /或包含在 Smil和 SIB12中的小区重选列^^ t, 这样就节省了读取新的***消息的时间， 从而减少了小区重选的时间。 优选地， ***消息为终端接^ ^的最新***消息。
方式二： 根据网络下发的邻区列 i成重选小区信息， 邻区列 根据终端上 报的测量报告生成的或者是根据预先获取的邻区信息生成的。
终端每隔一定的时间就向网络上报测量报告。网络侧根据接收到的测 量报告生成邻区列表， 该邻区列表是一种特殊的邻区列表， 该邻区列表中 包括与终端重选小区之前所在小区的相邻的各个小区的信息。 该邻区列表 中包含的小区个数一般较少， 例如包括终端发送的测量报告中的无线信号 质量最好的前 N个小区， 这里的 N为大于 1的整数， 例如可以是 3、 5或 10, 具体根据实际需要进行配置。 这样， 由于减小了小区重选的范围， 终 端可以尽快搜索到 d、区并发起与重选的小区的连接， 尽快完成小区重选操 作。
邻区列表也可是根据预先获取的邻区信息生成的。 例如， 网络在接收 到其它终端上报的测量报告时， 可以获取到相应的该终端当前所在小区的 邻区信息； 或者是由人工预先在网络配置所有小区的信息， 这样， 网络也 可获取到该终端当前所在小区的邻区信息。
本实施例中的处理器还用于： 当终端处于 CELL— DCH状态或 CELL— FACH状 态时， 可以接收下列信息中的至少一种： 邻区列表、 终端重选小区前所在的当前小 区的***消息、 当前小区的邻区的***消息。
网络可以根据终端上报的测量报告生成邻区列表。 由于实际运行中， 终端处 于 CELL— DCH状态或 CELL— FACH状态时才会向网络上报测量报告， 网 络根据测量报告生成邻区列表的时候， 终端一般就应该处于 CELL— DCH 状态或 CELL— FACH状态， 此时直接向终端下发邻区列表。 另外， 终端的 状态进行改变时， 都会向网络上报， 因为， 网络也是实时的得知终端所在 的状态。
优选地，该邻区列表中可以包 4 冬端重选小区前所在的当前小区与邻区的 定时差和 /或邻区的信息。该定时差可以为当前所在小区的 P-CCPCH和目标邻区的 P-CCPCH之间的定时差， 也可以为终端上行传输定时与目标邻区 P-CCPCH之间的 定时差。 邻区列表中包括邻区与终端当前所在小区的定时差， 可以加快终端的小区 搜索过程。 这是由于如果终端知道了目标小区与当前所在小区的定时差， 终端就可 以在哪个时间点 索窗移动到可以接^ ^目标小区的信号， 从而很快完成小区测 量。 否则就需要按照现有技术进行小区搜索， 这里简单介绍下现有技术小区搜索的 过程： 首先是时隙同步： 主同步信道的主同步码在每个时隙内重复发射， 传送完全 确知的序列， 用于终端与 UTRAN之间的比特同步。 其次是帧同步： 辅同步信 道的同步码实现，同时也确定了这个小区的 ^组。 ¾ ^是主 马识别：通过 CPICH 获得这个'〗、区的主扰码， 随后终端就可以读广搐信道。
优选地， 网络可以每隔一定时间向终端下发邻区列表， 终端在接^ ^新的邻区 列表时， 就将原有的邻区列表替换为新的邻区列表， 以保 冬端所 诸的邻区列表 是最新的邻区列表。
方式三： 根据终端存储的测量报告生成重选小区信息。
与方式二不同的是， 终端可以自^ 据重选小区前自身记录的测量报告进行小 区重选， 例如根据测量报告中的小区信息， 例如小区扰码， 小区信号质量， 小区定 时信息等， 选择信号质量较好的小区优先进行小区重选。 终端向网络上报测量报告 ^， 也将该测量报告^ ί诸在终端中， 这样就形成了测量报告。
地:选耳 冬端^ ί诸的测量报告中无线信号质量从高到底排列的前 Ν个小区； 根据前 Ν个小区的信息生成重选小区信息， 其中 Ν为大于 1的整数。
这里的 Ν可以根据实际需要进行配置。
ύ ^地， 本方式中的测量报告为最新的测量报告。
方式四：
根据终端存储的激活集'〗、区信息生成重选 '〗、区信息。
本方式中的原激活集小区指的是终端在进行重选小区操作之前正在 连接的各小区， 终端连接各小区时会获取到相应小区的各种信息， 并将这 些信息存储起来。 根据统计， 现有技术中终端在连接多个小区且需重选小 区时， 极大可能会连接到之前连接的某个或某几个小区， 这样， 终端需重 选小区时， 就可以首先搜索 CELL— DCH状态时激活集中的小区， 如果终 端就是与激活集中的小区进行连接时， 就相当于是减少了重选小区的时 间。
优选地， 本方式四中的激活集小区信息为最新的激活集小区信息。 本实施例的终端， 通过上述四种不同的获取小区重选信息的方法， 能 够减少终端读取***消息的时间， 或减少终端搜索小区的时间， 从而减少 重选小区的时间， 以尽快完成小区的连接， 避免真正掉话。
实施例七
本实施例提供一种网络侧设备， 该网络侧设备可以包括： 至少一个处 理器， 以及存储器， 该存储器用于存储可执行程序代码。 其中， 处理器通 于： 根据终端的测量报告和 /或预先获取的终端所在的当前小区的邻区信息生成邻区 列表； 向终端下发邻区列表， 以使终端需小区重选时， 根据邻区列 与重选的 小区的连接建立， 邻区列表中包 4 冬端当前所在小区的信息和 /或邻区信息。
优选地， 邻区列表中包括与终端重选小区之前所在小区的相邻的各个 小区的信息。 器向终端下发下列信息中的至少一种： 邻区列表、 终端重选小区前所在的当前小区 的***消息、 当前小区的邻区的***消息。 。
本实施例的网络侧设备， 通过根据终端上报的测量报告生成终端用于 重选小区的邻区列表， 能够减少终端搜索小区的时间， 从而减少重选小区 的时间， 以尽快完成小区的连接， 避免真正掉话。
本领域技术人员可以理解附图只是一个优选实施例的示意图， 附图中 的模块或流程并不一定是实施本申请所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例 描述进行分布于实施例的装置中， 也可以进行相应变化位于不同于本实施 例的一个或多个装置中。 上述实施例的模块可以合并为一个模块， 也可以 进一步拆分成多个子模块。
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， 仅以 上述各功能模块的划分进行举例说明， 实际应用中， 可以根据需要而将上 述功能分配由不同的功能模块完成， 即将装置的内部结构划分成不同的功 能模块， 以完成以上描述的全部或者部分功能。 上述描述的***， 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***， 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， 所述模块或单元的划分， 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***， 或一些特征可以忽略， 或不执行。 另一点， 所显示 或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口， 装 置或单元的间接耦合或通信连接， 可以是电性， 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的， 作为单元显示的部件可以是或者也可以不是物理单元， 即可以位于一个地 方， 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本实施例方案的目的。
另外， 在本申请各个实施例中的各功能单元可以集成在一个处理单元 中， 也可以是各个单元单独物理存在， 也可以两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以釆用硬件的形式实现， 也可以釆用软 件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品 销售或使用时， 可以存储在一个计算机可读取存储介质中。 基于这样的理 解， 本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技 术方案的全部或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） 或处理器 （processor )执行本申 请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括： U盘、 移动硬盘、 只读存储器 （ROM, Read-Only Memory ) 、 随机存取存储器 ( RAM, Random Access Memory ) 、 磁碟或者光盘等各种可以存储程序 代码的介质。
最后应说明的是： 以上实施例仅用以说明本发明的技术方案， 而非对 其限制； 尽管参照前述实施例对本发明进行了详细的说明， 本领域的普通 技术人员应当理解： 其依然可以对前述各实施例所记载的技术方案进行修 改， 或者对其中部分技术特征进行等同替换； 而这些修改或者替换， 并不 使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种小区重选的方法， 其特征在于， 包括：
当终端需小区重选时， 根据所述终端存储的小区信息生成重选小区信 息；
根据所述重选小区信息， 发起与重选的小区的连接建立。
2、 根据权利要求 1所述的小区重选的方法， 其特征在于， 所述根据 所述终端存储的小区信息生成重选小区信息包括：
根据所 ^冬端 诸的***消息生成所述重选小区信息； 或
根据网络下发的邻区列 i成所述重选小区信息， 所述邻区列表是根据所 冬 端上报的测量报告生成的或者是根据预先获取的邻区信息生成的； 或
根据所 ^冬端 诸的测量报告生成所述重选 '〗、区信息； 或
根据所 ^冬端 诸的激活集 d、区信息生成所述重选 d、区信息。
3、 根据权利要求 2所述的小区重选的方法， 其特 ^球于， 所述***消息包括所 冬端重选'〗、区前所在的当前小区的信息和 /或所述当前'〗、区的邻区的***消息。
4、 根据权利要求 2或 3所述的小区重选的方法， 其特 ^球于， 还包括： 至少一种： 邻区列表、 所 ^冬端重选小区前所在的当前小区的***消息、 所述当前 小区的邻区的***消息。
5、 根据权利要求 2或 4中所述的小区重选的方法， 其特征在于， 所 述邻区列表中包括所述终端重选小区前所在的当前小区与邻区的定时差 和 /或所述邻区的信息。
6、根据权利要求 2所述的小区重选的方法， 其特 ^球于， 所述根据所^冬端存 储的测量报告生成所述重选 d、区信息包括：
选耳 斤^冬端^ ί诸的测量报告中无线信号质量从高到底排列的前 N个小区， 其 中 Ν为大于 1的整数；
根据所述前 Ν个小区的信息生成重选'〗、区信息。
7、 一种小区重选的方法， 其特征在于， 包括：
根据终端的测量报告和 /或预先获取的所 ^冬端所在的当前小区的邻区信息生成 邻区列表；
向所 冬端下发所述邻区列表， 以使所 冬端需小区重选时， 根据所述邻区列 ^与重选的小区的连接建立， 所述邻区列表中包括所 冬端当前所在小区的信 息和 /或邻区信息。
8、根据权利要求 7所述的小区重选的方法， 于， 所述邻区列表中包 括所述终端重选小区前所在的当前小区与邻区的定时差和 /或所述邻区的信
9、 一种小区重选的装置， 其特征在于， 包括：
生成模块， 用于当终端需小区重选时， 根据所述终端存储的小区信息 生成重选小区信息；
发起模块， 用于根据所述重选小区信息， 发起与重选的小区的连接建 立。
10、 根据权利要求 9所述的小区重选的装置， 其特征在于， 所述生成 模块具体用于， 当终端需小区重选时， 按照以下任一种方式生成重选小区 信息：
根据所 ^冬端 诸的***消息生成所述重选小区信息； 或
根据网络下发的邻区列 i成所述重选小区信息， 所述邻区列表是根据所 冬 端上报的测量报告生成的或者是根据预先获取的邻区信息生成的； 或
根据所 ^冬端 诸的测量报告生成所述重选 '〗、区信息； 或
根据所 ^冬端 诸的激活集 d、区信息生成所述重选 d、区信息。
11、 根据权利要求 9或 10所述的小区重选的装置， 其特 ^球于， 还包括： 收下列信息中的至少一种： 邻区列表、 所 ^冬端重选小区前所在的当前小区的*** 消息、 所述当前 d、区的邻区的***消息。
12、 根据权利要求 10或 11所述的小区重选的装置， 于， 当所述生成 模块具体用于 , 当终端需小区重选时根据所述终端存储的测量报告生成所述重 选小区信息时， 所述生^ 包括：
选取子才數， 用于选取所 冬端 的测量报告中无线信号质量从高到底排列 的前 N个小区， 其中 N为大于 1的整数；
生成子模 ， 用于根据所述前 N个小区的信息生成重选小区信息。
13、 一种小区重选的装置， 期 于， 包括：
生成邻区列表模 ， 用于根据终端的测量报告和 /或预先获取的所述终端所在的 当前小区的邻区信息生成邻区列表；
发送 ¾ 用于向所 冬端下发所述邻区列表， 以使所 ^冬端需小区重选时， 根据所述邻区列 ½^与重选的小区的连接建立， 所述邻区列表中包括所 ^冬端当 前所在'〗、区的信息和 /或邻区信息。
14、 一种终端， 其特征在于， 包括： 至少一个处理器， 以及存储器， 所述存储 器用于 诸可 ^亍程序 ^ , 其中， 所^:理器通过读耳 斤述^ ί诸器中 诸的可执 行程序 ^«马 ^行与所述可 1 ^亍程序^ ^马对应的程序， 以用于：
当终端需小区重选时， 根据所述终端存储的小区信息生成重选小区信 息；
根据所述重选小区信息发起与重选的小区的连接建立。
15、 一种网络侧设备， 其特征在于， 包括： 至少一个处理器， 以及存储器， 所 述^ ί诸器用于^ ί诸可 1^亍程序 ^ , 其中， 所^:理器通过读耳 斤述^ ί诸器中 诸 根据终端的测量报告和 /或预先获取的所 ^冬端所在的当前小区的邻区信息生成 邻区列表；
向所 冬端下发所述邻区列表， 以使所 ^冬端需小区重选时， 根据所述邻区列 ½^与重选的小区的连接建立， 所述邻区列表中包括所 冬端当前所在小区的信 息和 /或邻区信息。
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