WO2012048626A1 - 切换目标小区的确定方法及系统、接入网设备 - Google Patents

切换目标小区的确定方法及系统、接入网设备 Download PDF

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Publication number
WO2012048626A1
WO2012048626A1 PCT/CN2011/080575 CN2011080575W WO2012048626A1 WO 2012048626 A1 WO2012048626 A1 WO 2012048626A1 CN 2011080575 W CN2011080575 W CN 2011080575W WO 2012048626 A1 WO2012048626 A1 WO 2012048626A1
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Prior art keywords
base station
mobile base
cell
information
location information
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PCT/CN2011/080575
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English (en)
French (fr)
Inventor
杨胜强
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华为技术有限公司
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Publication of WO2012048626A1 publication Critical patent/WO2012048626A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/029Location-based management or tracking services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/32Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/322Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by location data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information

Definitions

  • the present invention relates to a mobile communication technology, and in particular, to a method and system for determining a handover target cell, and an access network device.
  • a mobile base station is a wireless base station deployed in a large mobile vehicle such as a train or a ship. It can be connected to a public land mobile network (PLMN) through a wireless transmission channel or a satellite transmission channel.
  • PLMN public land mobile network
  • the mobile base station can strategically suppress the handover of all terminals during the operation of the vehicle, but the vehicle enters at the docking
  • the terminal needs to switch to the cell managed by the fixed base station where the docking station is located (i.e., the neighboring cell of the mobile base station located at the docking station).
  • the terminal may measure the neighboring cell signal of the mobile base station (that is, the cell signal managed by the fixed base station where the calling station is located) according to the neighboring cell included in the system message broadcast by the mobile base station, and the terminal recognizes that the signal quality is good.
  • the identification information of the cell signal is reported to the mobile base station. If the handover condition is met, the mobile station control device may identify the corresponding cell as the handover target cell according to the identification information of the cell signal reported by the terminal, and instruct the terminal to switch to the handover target cell.
  • the terminal and the mobile base station move with the vehicle, it may pass through multiple docking stations (ie, local network), so that the mobile station
  • the identification information of the cell signal from the terminal acquired by the mobile base station control device may be duplicated, so that the wrong cell (handover target cell) may be identified, which may result in the inability to accurately indicate that the terminal switches to the correct neighboring cell (ie, the current stop site).
  • the cell managed by the fixed base station affects the normal operation of the communication.
  • Embodiments of the present invention provide a method and a system for determining a handover target cell, and an access network device, which is configured to accurately indicate that the terminal switches to a current stop site of a vehicle where the terminal is located when the terminal communicates through the mobile base station.
  • the cell managed by the fixed base station ensures the normal operation of the communication.
  • An embodiment of the present invention provides a method for determining a handover target cell, including:
  • the mobile base station control device that communicates with the mobile base station acquires location information of the mobile base station, where the mobile base station is a base station that the terminal accesses;
  • the mobile base station control device determines the handover target cell of the terminal according to the location information of the mobile base station.
  • An embodiment of the present invention further provides an access network device, including:
  • a location information receiving device configured to acquire location information of the mobile base station, where the mobile base station is a base station accessed by the terminal;
  • a target cell determining apparatus configured to determine, according to location information of the mobile base station, a handover target cell of the terminal, if the terminal needs to perform handover.
  • An embodiment of the present invention further provides a determining system for a handover target cell, including the foregoing access network device.
  • FIG. 1 is a schematic flow chart of a method for determining a handover target cell according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a method for determining a handover target cell according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for determining a handover target cell according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a method for determining a handover target cell according to an embodiment of the present invention.
  • the method for determining a handover target cell in this embodiment may include the following steps: Step 101: Mobile communication with a mobile base station The base station control device acquires location information of the mobile base station, where the mobile base station is a base station accessed by the terminal;
  • the step may be that the mobile base station obtains the location information of the mobile base station, and sends the acquired location information of the mobile base station to the mobile base station control device that communicates with the mobile base station, so that the mobile base station control device that communicates with the mobile base station Acquiring the location information of the mobile base station and storing it locally; and acquiring the location information of the mobile base station directly for the mobile base station control device, and storing the location information locally.
  • the mobile base station control device may acquire location information of the mobile base station according to a preset acquisition policy.
  • the foregoing preset acquisition policy may be time interval information of acquiring location information of the mobile base station, and may acquire location information of the mobile base station in real time, and may acquire location information of the mobile base station periodically. If the location information of the mobile base station acquired by the mobile base station control device does not change, the location information of the stored mobile base station may not be updated; if the location information of the mobile base station acquired by the mobile base station control device changes, the stored information may be updated. Location information of the above mobile base station.
  • the location information may be GPS geographic location latitude and longitude information calculated by the mobile base station by receiving a Global Positioning System (GPS) signal, for example: 116.46 degrees east longitude and 39.92 degrees north latitude.
  • GPS Global Positioning System
  • Step 102 If the terminal needs to perform handover, the mobile base station control device determines the handover target cell of the terminal according to the location information of the mobile base station.
  • the mobile base station control device may receive, by using the mobile base station, a measurement report of a cell signal including a signal strength of a cell signal from a terminal, and a cell signal included in a measurement report of the cell signal, by using a cell managed by the mobile base station.
  • Signal strength can include The signal strength of the cell signal and/or the signal strength of the neighbor cell signal.
  • the neighboring cell is a cell managed by a fixed base station where the stopping station of the vehicle where the terminal is located is located.
  • the mobile base station control device may calculate the distance between the mobile base station and each adjacent cell by using the acquired location information of the mobile base station and the location information included in the configured configuration information of the neighboring cell, respectively.
  • the one of the neighboring cells whose distance is smaller than the distance threshold set in advance according to the local network range is used as the handover target cell of the terminal.
  • the neighboring cell configured as described above is a cell managed by a fixed base station where all the stopping stations of the way in which the terminal is located are located.
  • the mobile base station control device may calculate that the distance between the at least two neighboring cells and the mobile base station is smaller than a distance threshold set according to the local network range in advance, and then the foregoing base station control device may further perform the neighboring transmission according to the terminal.
  • the identification information of the cell signal, where the neighboring cell is a cell managed by a fixed base station where the calling station where the terminal of the terminal is located is located.
  • the identification information of the neighboring cell signal may be obtained by receiving a measurement report of the cell signal sent by the terminal, or may be carried by other messages sent by the terminal to the mobile base station control device.
  • the identification information of the cell signal in the measurement report of the cell signal may include a pseudo-random code (Pseudo-random Number) , may also include frequency information and PN, may also include frequency band information, frequency information and PN; in the Wideband Code Division Multiple Access (WCDMA) system network, the measurement of the above cell signal
  • the identification information of the cell signal may include a primary scrambling code, and may also include frequency point information and a primary scrambling code, and may also include frequency band information, The frequency point information and the primary scrambling code; in the Global System for Mobile Communications (GSM) network, the identification information of the cell signal in the measurement of the cell signal may include the base station identification code (Base Transceiver) Station Identity Code (BSIC) can also contain frequency information and B
  • the mobile base station control device may first calculate the neighboring cell of the mobile base station and the neighboring cell by using the acquired location information of the mobile base station and location information included in the configured configuration information of the neighboring cell.
  • the distance between the neighboring cell and the mobile base station is determined to be less than at least two neighboring cells that are set in advance according to the distance threshold set by the local network range, and further, according to the identification information of the adjacent cell signal and the adjacent Corresponding relationship of the cell, determining, from the determined at least two neighboring cells, a neighboring cell (currently actual neighboring cell) corresponding to the identification information of the neighboring cell signal included in the measurement 4 report as the terminal Switching target cell.
  • the mobile base station control device may further determine, according to the correspondence between the identifier information of the neighboring cell signal and the neighboring cell, at least two phases corresponding to the identifier information of the neighboring cell signal included in the measurement report.
  • the neighboring cell further uses the obtained location information of the mobile base station and the location information included in the configured configuration information of the at least two neighboring cells to calculate the mobile base station and each of the determined at least two adjacent cells respectively.
  • the distance between the neighboring cells determines a neighboring cell (the current actual neighboring cell) with the smallest distance as the handover target cell of the terminal.
  • the mobile base station control device that communicates with the mobile base station acquires the location information of the mobile base station, and when the terminal needs to perform handover, determining the handover target cell of the terminal according to the acquired location information of the mobile base station, because the foregoing mobile
  • the location information of the base station can accurately reflect the current location of the terminal, so that the mobile base station control device that communicates with the mobile base station can accurately determine the handover target cell of the terminal according to the location information of the mobile base station, thereby accurately indicating the terminal.
  • Switch to the current stop of the vehicle where the terminal is located The cell managed by the fixed base station where the point is located ensures the normal operation of the communication.
  • this method does not require the cooperation and modification of the terminal, and is applicable to all types of terminals, and has good adaptability.
  • the method for determining a handover target cell in this embodiment can be applied to a plurality of mobile communication networks, for example, a Global System for Mobile Communications (GSM) network, Code Division Multiple Access (Code Division Multiple Access) CDMA) Network, Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE) network.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • the mobile base station may be a base transceiver station (BTS) and a node B (NodeB); the mobile base station control device may be a base station controller (base station controller, BSC), a radio network controller (Radio)
  • BSC base station controller
  • Radio radio network controller
  • a network element such as a network controller (RNC)
  • RNC network controller
  • a mobile base station and a mobile base station control device may be an evolved Node B (eNodeB).
  • the mobile BTS of the CDMA system will be taken as an example.
  • the scenario of an embodiment of the present invention may be as follows: A mobile CDMA mobile BTS is deployed on the train, and the cell Cell-M is configured.
  • the mobile BSC is deployed in a certain computer room in Beijing.
  • the train passes through the docking station A, the docking station B, the docking station C, the docking station D, the docking station E and the docking station F, wherein the docking station A, the docking station B, the docking station C, the docking station D, the docking station E and The docking station F is deployed with a fixed BTS of the CDMA system, the stopping station A is configured with the cells Cell-A1 and Cell-A2, the stopping station B is configured with the cell Cell-B, and the stopping station C is configured with the cells Cell-C1 and Cell-C2.
  • the docking station D is configured with a cell Cell-D
  • the docking station E is configured with cells Cell-E1 and Cell-E2
  • the docking station F is configured with a cell Cell-F
  • the distance between the stopping station A and the stopping station B is very close (ie, The docking station A and the docking station B are located in a local network, that is, the PNs of the three cells of the cell Cell_A1, the cell Cell_A2 and the cell Cell-B are different, and PN cell may be the same, may not be the same as a stop to support mobile BTS Site A, stop site B, dock site C, dock site D, dock site E, and dock site F switch, cell Cell-A1 and Cell-A2, cell Cell-B, Cell-C1, and Cell-C2, Cell- D, Cell_E1 and Cell_E2, and Cell_F
  • Nine cells are configured as neighboring cells of the cell Cell-M managed by the mobile BTS.
  • a mobile BTS acquires location information of the mobile BTS, and sends the obtained location information of the mobile BTS to the mobile BSC, where The BSC determines the handover target cell of the UE.
  • the method for determining a handover target cell in this embodiment may include:
  • Step 201 The mobile BTS acquires location information of the mobile BTS in real time;
  • the method for obtaining the location information of the mobile BTS by using the mobile BTS may be specifically referred to in the foregoing description of the first embodiment of the present invention, and details are not described herein again.
  • Step 202 The mobile BTS reports the location information of the mobile BTS to the mobile BSC that communicates with the mobile BTS.
  • the location information of the mobile BTS may be stored. If the location information of the BTS does not change, the mobile BSC does not need to update the location information of the stored BTS; if the location information of the BTS changes, the mobile BSC updates the location information of the stored BTS.
  • Step 203 The UE sends a pilot measurement message (Pilot Strength Measurement Message, PSMM) to the mobile BSC by using the mobile BTS, where the PSMM includes the signal strength of the cell PN_A1 and the cell Cell-A1 signal.
  • PSMM Peak Strength Measurement Message
  • the mobile BTS may further transmit the changed location information of the mobile BTS to the mobile BSC in the PSMM, so that the mobile BSC obtains the latest mobile BTS. location information.
  • Step 204 If the signal strength of the cell Cell_A1 signal satisfies the handover condition, the mobile BSC performs distance calculation by using the acquired location information of the mobile BTS and the location information included in the configured configuration information of the neighboring cell, respectively, to determine Adjacent cell and the above mobile BTS
  • the distance between the cells Cell_A1, the cell Cell_A2, and the cell Cell_B is smaller than the distance threshold set in advance according to the local network range;
  • three cells of the cell Cell_A1, the cell Cell_A2, and the cell Cell-B are configured as neighboring cells of the cell Cell-M managed by the mobile BTS, and two fixed BTSs at two docking stations. All are located in one local network, so the mobile BSC matches the three cells of cell Cell_A1, cell Cell-A2 and cell Cell-B.
  • Step 205 The mobile BSC determines, according to the correspondence between the identifier information of the neighboring cell signal and the neighboring cell, a cell Cell_A1 corresponding to the PN included in the PSMM as the handover target cell of the UE;
  • the mobile BSC determines that the cell Cell_A1 is the handover target cell of the UE.
  • Step 206 The mobile BSC instructs the UE to perform handover according to the determined handover target cell.
  • the location information of the mobile BTS is obtained by the mobile BSC that communicates with the mobile BTS.
  • the handover target cell of the UE is determined according to the acquired location information of the mobile BTS, because the mobile BTS is The location information can accurately reflect the current location of the UE, so that the mobile BSC can accurately determine the handover target cell of the UE according to the location information of the mobile BTS, thereby accurately indicating that the UE is switched to the current stop site.
  • the cell managed by the BTS ensures the normal operation of the communication.
  • this method does not require the cooperation and modification of the UE, and is applicable to all types of UEs, and has good adaptability.
  • the scenario of an embodiment of the present invention may also be as follows: A mobile CDMA mobile BTS is deployed on the train, and the cell Cell-M is configured.
  • the mobile BSC is deployed in a computer room in Beijing.
  • the mobile phone, the train will pass through the docking station A, the docking station ⁇ the docking station C, the docking station port, the docking station E and the docking station F, wherein the docking station A, the docking station B, the docking station C, the docking station D, the docking station E and The docking station F is deployed with a fixed BTS of the CDMA system, and the stopping station A is configured with a cell Cell-A.
  • the stop site B is configured with a cell Cell-B
  • the dock site C is configured with a cell Cell-C
  • the dock site D is configured with a cell Cell-D
  • the dock site E is configured with a cell Cell-E
  • the docking station F is configured with a cell Cell-F.
  • the cell PN-A and the cell Cell-D have the same PN (the PNs of other cells may be the same or different) to support the mobile BTS to the stop site A, the stop site B, the stop site C, the stop site D, and the docking
  • the six cells of the cell Cell_A, the cell Cell-B, the Cell-C, the Cell-D, the Cell-E and the Cell-F are all configured as the cell Cell-M managed by the mobile BTS. Adjacent cell. The user of the UE is getting off at the stop site A, and the UE needs to perform a call state handover.
  • a mobile BTS acquires location information of the mobile BTS, and sends the obtained location information of the mobile BTS to the mobile BSC.
  • the BSC determines the handover target cell of the UE.
  • the method for determining a handover target cell in this embodiment may include:
  • Step 301 The mobile BTS obtains the location information of the mobile BTS in real time
  • the method for obtaining the location information of the mobile BTS by using the mobile BTS may be specifically referred to in the foregoing description of the first embodiment of the present invention, and details are not described herein again.
  • Step 302 The mobile BTS reports the location information of the mobile BTS to the mobile BSC that communicates with the mobile BTS.
  • the location information of the mobile BTS may be stored. If the location information of the BTS does not change, the mobile BSC does not need to update the location information of the stored BTS; if the location information of the BTS changes, the mobile BSC updates the location information of the stored BTS.
  • Step 303 The UE sends a Pilot Strength Measurement Message (PSMM) to the mobile BSC by using the mobile BTS, where the PSMM includes the signal strength of the PN of the cell Cell-A and the Cell-A signal of the cell;
  • PSMM Pilot Strength Measurement Message
  • the mobile BTS may further carry the changed location information of the mobile BTS in the PSMM to move.
  • the BSC sends, so that the mobile BSC acquires the location information of the latest mobile BTS.
  • Step 304 If the signal strength of the Cell_A signal of the cell satisfies the handover condition, the mobile BSC performs matching of the neighboring cell according to the correspondence between the identification information of the neighboring cell signal and the neighboring cell, and determines the content included in the PSMM.
  • both the cell Cell_A and the cell Cell-D are configured as neighboring cells of the cell Cell-M managed by the mobile BTS, and the PNs of the two cell signals are completely identical, the mobile BSC is matched. Two cells, Cell-A and Cell-D, are used.
  • Step 305 The mobile BSC uses the acquired location information of the mobile BTS and the location information included in the configuration information of the two cells Cell_A and CellC-D corresponding to the PN, and performs distance calculation to determine the distance.
  • a cell Ce-A with the smallest distance is used as the handover target cell of the UE;
  • the mobile BSC determines that The cell Cell_A serves as a handover target cell of the above UE.
  • Step 306 The mobile BSC instructs the UE to perform handover according to the determined handover target cell.
  • the location information of the mobile BTS is obtained by the mobile BSC that communicates with the mobile BTS.
  • the handover target cell of the UE is determined according to the acquired location information of the mobile BTS, because the mobile BTS is The location information can accurately reflect the current location of the UE, so that the mobile BSC can accurately determine the handover target cell of the UE according to the location information of the mobile BTS, thereby accurately indicating that the UE is switched to the current stop site.
  • the cell managed by the BTS ensures the normal operation of the communication.
  • this method does not require the cooperation and modification of the UE, and is applicable to all types of UEs, and has good adaptability.
  • FIG. 4 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • the access network device of this embodiment may include a location information receiving device 41 and a target cell determining device 43.
  • the location information receiving device 41 acquires location information of the mobile base station, and the mobile base station is a base station that the terminal accesses. If the terminal needs to perform handover, the target cell determining device 43 determines the handover target of the terminal according to the location information of the mobile base station. Community.
  • the functions of the mobile base station control device in the embodiment corresponding to FIG. 1 , the mobile BSC in the embodiment corresponding to FIG. 2, and the mobile BSC in the embodiment corresponding to FIG. 3 can be implemented by the access network device provided by the embodiment of the present invention.
  • the location information may be GPS geographic location latitude and longitude information calculated by the mobile base station by receiving a Global Positioning System (GPS) signal, for example: 116.46 degrees east longitude and 39.92 degrees north latitude.
  • GPS Global Positioning System
  • the target cell determining apparatus 43 in this embodiment may specifically include a first distance calculating unit 431 and a first cell determining unit 432.
  • the first distance calculating unit 431 is configured to calculate, between the mobile base station and each of the neighboring cells in the configured neighboring cell, by using the location information of the mobile base station and the location information included in the configured configuration information of the neighboring cell.
  • the first cell determining unit 432 is configured to determine, as a handover target cell of the terminal, a configured neighboring cell whose distance between the configured neighboring cell and the mobile base station is less than a preset distance threshold, the distance valve The value is set according to the local network range size; wherein, the neighboring cell configured as above is a cell managed by a fixed base station where all the stopping stations of the vehicle where the terminal is located are located.
  • the location information receiving device acquires the location information of the mobile base station, and when the terminal needs to perform the handover, the target cell determining device may obtain the location information according to the location information receiving device.
  • the location information of the mobile base station determines the handover target cell of the terminal, and the location information of the mobile base station can accurately reflect the current location of the terminal, so that the mobile base station control device that communicates with the mobile base station can be accurately determined according to the location information of the mobile base station.
  • the handover target cell of the terminal is determined, thereby realizing a cell that can be accurately instructed by the fixed base station where the terminal is switched to the current stop site of the vehicle in which the terminal is located, to ensure normal communication.
  • this method does not require the cooperation and modification of the terminal, and is applicable to all types of terminals, and has good adaptability.
  • FIG. 5 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • the access network device in this embodiment may further include an identifier information receiving device 42, as compared with the previous embodiment.
  • the identifier information of the cell signal may include a pseudo-random code (Pseudo-random Number), and may also include frequency information.
  • CDMA code division multiple access
  • may also include frequency band information, frequency point information, and ⁇ ; in a Wideband Code Division Multiple Access (WCDMA) system network, the identification information of the foregoing cell signal may include a primary scrambling code, and may also The frequency information and the primary scrambling code may be included, and the frequency band information, the frequency point information, and the primary scrambling code may be included.
  • the identification information of the foregoing cell signal may include The Base Transceiver Station Identity Code (BSIC) may also include frequency point information and BSIC, and may also include frequency band information, frequency point information, and BSIC.
  • the identifier information receiving device 42 may specifically receive the measurement report sent by the terminal, where the measurement report includes the identifier information of the neighbor cell signal.
  • the target cell determining means 43 may further determine the handover target cell of the terminal according to the location information of the mobile base station and the identification information of the neighboring cell signal.
  • the target cell determining means 43 may include a second distance calculating unit 433, a second cell determining unit 434, and a third cell determining unit 435.
  • the second distance calculation unit 433 And calculating, by using the location information of the mobile base station and the location information included in the configured configuration information of the neighboring cell, a distance between the mobile base station and each adjacent cell in the configured neighboring cell, where the second cell determines
  • the unit 434 is configured to determine at least two configured neighboring cells whose distance between the configured neighboring cell and the mobile base station is less than a preset distance threshold, where the distance threshold is set according to a local network range size, and third.
  • the cell determining unit 435 is configured to determine, according to the correspondence between the identifier information of the neighboring cell signal and the neighboring cell, a neighboring cell corresponding to the identifier information of the neighboring cell signal from the neighboring cells of the at least two configurations. As the handover target cell of the above terminal.
  • the location information receiving device acquires the location information of the mobile base station, and the identifier information receiving device acquires the identifier information of the neighboring cell signal sent by the terminal.
  • the target cell determining device may receive according to the location information.
  • the location information of the mobile base station and the identifier information of the neighboring cell signal acquired by the identifier information receiving device are determined by the device, and the handover target cell of the terminal is determined, and the location information of the mobile base station can accurately reflect the current location of the terminal.
  • the mobile base station control device that communicates with the mobile base station can accurately determine the handover target cell of the terminal according to the location information of the mobile base station, thereby implementing a cell that can accurately instruct the terminal to switch to the fixed base station where the current stop site is located. , to ensure the normal operation of communication.
  • this method does not require the cooperation and modification of the terminal, and is suitable for all types of terminals, and has good adaptability.
  • the target cell determining apparatus 43 may further include a fourth cell determining unit 436, a third distance calculating unit 437, and a fifth cell determining unit 438.
  • the fourth cell determining unit 436 is configured to determine, according to the correspondence between the identifier information of the neighboring cell signal and the neighboring cell, at least two neighboring cells corresponding to the identifier information of the neighboring cell signal, and calculate the third distance.
  • the unit 437 is configured to calculate, by using the location information of the mobile base station and the configured location information included in the configuration information of the at least two neighboring cells, each of the mobile base stations and each of the configured at least two neighboring cells.
  • the distance between the cells, the fifth cell determining unit 438 is configured to determine a neighboring cell with the smallest distance as the switching destination of the terminal. Standard cell.
  • the location information receiving device 41 in the embodiment corresponding to FIG. 4, FIG. 5 and FIG. 6 may specifically obtain the location information of the mobile base station sent by the mobile base station; or specifically, the location information of the mobile base station may be directly acquired.
  • An embodiment of the present invention may further provide a determining system for a handover target cell, including the access network device provided by the embodiment corresponding to FIG. 4, FIG. 5 or FIG.
  • the mobile base station control device is a base station control device that communicates with the mobile base station
  • the mobile base station control device may be deployed in a mobile vehicle, or may be
  • the fixed base station control equipment is similar, deployed at a fixed location, as long as it is guaranteed to be able to communicate with the mobile base station.

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Description

切换目标小区的确定方法及系统、 接入网设备
本申请要求于 2010 年 10 月 12 日提交中国专利局、 申请号为 201010512028.5、 发明名称为 "切换目标小区的确定方法及系统、 接入网 设备" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明实施例涉及移动通信技术, 尤其涉及一种切换目标小区的确定 方法及系统、 接入网设备。
背景技术 移动基站就是在火车、 轮船等大型可移动的交通工具内部署的无线基 站,可以通过无线传输通道或卫星传输通道与公众陆地移动网( Public Land Mobile Network,筒称 PLMN )连接。在交通工具运行过程中,由于终端( User Equipment, 筒称 UE ) 的用户不可能离开交通工具, 所以在交通工具运行 过程中移动基站可以有策略的抑制所有终端的切换, 但在交通工具进入在 停靠站点时, 由于用户可能需要下车, 此时终端需要切换到停靠站点所处 的固定基站所管理的小区 (即位于停靠站点处的移动基站的相邻小区) 。 具体地, 终端可以按照移动基站广播的系统消息中包含的相邻小区测量移 动基站的相邻小区信号(即停靠站点所处的固定基站所管理的小区信号) , 终端识别出信号质量比较好的小区信号的标识信息向移动基站上报, 若满 足切换条件, 移动基站控制设备可以根据上述终端上报的小区信号的标识 信息识别出对应的小区作为切换目标小区, 指示终端切换到该切换目标小 区。
由于上述小区信号的标识信息的设置在整个网络中并不是唯一的, 存 在多个局部网络中小区信号的标识信息的复用。 由于终端与移动基站是随 交通工具一起移动的, 可能会经过多个停靠站点 (即局部网络) , 使得移 动基站控制设备获取的来自终端的小区信号的标识信息有可能重复, 从而 可能识别出错误的小区 (切换目标小区) , 导致了无法准确指示上述终端 切换到正确的相邻小区 (即当前停靠站点所处的固定基站所管理的小区) , 影响了通信的正常进行。
发明内容 本发明实施例提供一种切换目标小区的确定方法及系统、 接入网设备, 用以实现当终端通过移动基站进行通信时, 能够准确指示上述终端切换到 终端所在交通工具的当前停靠站点所处的固定基站所管理的小区, 保证通 信的正常进行。
本发明实施例提供了一种切换目标小区的确定方法, 包括:
与移动基站通信的移动基站控制设备获取所述移动基站的位置信息, 所述移动基站为终端接入的基站;
若所述终端需要进行切换, 所述移动基站控制设备根据所述移动基站 的位置信息, 确定所述终端的切换目标小区。
本发明实施例还提供了一种接入网设备, 包括:
位置信息接收装置, 用于获取移动基站的位置信息, 所述移动基站为 终端接入的基站;
目标小区确定装置, 用于若所述终端需要进行切换, 根据所述移动基 站的位置信息, 确定所述终端的切换目标小区。
本发明实施例再提供了一种切换目标小区的确定系统, 包括上述接入 网设备。
由上述技术方案可知, 本发明实施例通过与移动基站通信的移动基站 控制设备获取该移动基站的位置信息, 当终端需要进行切换时, 根据获取 的上述移动基站的位置信息确定上述终端的切换目标小区, 由于上述移动 基站的位置信息可以准确反映出上述终端的当前位置, 使得与移动基站通 信的移动基站控制设备可以根据上述移动基站的位置信息准确确定出上述 终端的切换目标小区, 从而实现了能够准确指示上述终端切换到终端所在 交通工具的当前停靠站点所处的固定基站所管理的小区, 保证通信的正常 进行。 另外, 此方法不需要终端的配合和修改, 适用于所有类型终端, 适 应性好。
附图说明 为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例中所 需要使用的附图作一筒单地介绍, 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 为本发明一个实施例提供的切换目标小区的确定方法的流程示意 图;
图 2为本发明一个实施例提供的切换目标小区的确定方法的流程示意 图;
图 3为本发明一个实施例提供的切换目标小区的确定方法的流程示意 图;
图 4为本发明一个实施例提供的接入网设备的结构示意图;
图 5为本发明一个实施例提供的接入网设备的结构示意图
图 6为本发明一个实施例提供的接入网设备的结构示意图。
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。
图 1 为本发明一个实施例提供的切换目标小区的确定方法的流程示意 图, 如图 1所示, 本实施例的切换目标小区的确定方法可以包括以下步骤: 步骤 101、 与移动基站通信的移动基站控制设备获取上述移动基站的 位置信息, 上述移动基站为终端接入的基站;
具体地, 本步骤具体可以为移动基站获取该移动基站的位置信息, 向 该与移动基站通信的移动基站控制设备发送获取的上述移动基站的位置信 息, 以使与移动基站通信的移动基站控制设备获取上述移动基站的位置信 息, 并存储在本地; 还可以为移动基站控制设备直接获取该移动基站的位 置信息, 并存储在本地。 本步骤中, 上述移动基站控制设备可以根据一个 预先设置的获取策略获取该移动基站的位置信息。 具体地, 上述预先设置 的获取策略可以为获取移动基站的位置信息的时间间隔信息, 可以为实时 获取移动基站的位置信息, 还可以为定时获取移动基站的位置信息。 如果 移动基站控制设备获取的上述移动基站的位置信息没有发生变化, 则可以 不更新存储的移动基站的位置信息; 如果移动基站控制设备获取的上述移 动基站的位置信息发生变化, 则可以更新存储的上述移动基站的位置信息。
具体地,上述位置信息可以是移动基站通过接收全球定位系统( Global Positioning System, 筒称 GPS )信号而计算得到的 GPS地理位置经纬度 信息, 例如: 东经 116.46度, 北纬 39.92度。
步骤 102、 若上述终端需要进行切换, 上述移动基站控制设备根据上 述移动基站的位置信息, 确定上述终端的切换目标小区。
具体地, 移动基站控制设备可以通过上述移动基站从该移动基站所管 理的小区上接收来自终端的包含小区信号的信号强度的小区信号的测量报 告, 上述小区信号的测量报告中所包含的小区信号的信号强度可以包括服 务小区信号的信号强度和 /或相邻小区信号的信号强度。 其中, 上述相邻小 区为终端所在交通工具的停靠站点所处的固定基站所管理的小区。
当上述小区信号的信号强度满足切换条件时, 说明终端需要进行切换, 具体地, 上述切换条件的具体描述可以参见现有技术中的相关内容, 此处 不再赘述。
具体地, 上述移动基站控制设备可以利用获取的上述移动基站的位置 信息和配置的相邻小区的配置信息中包含的位置信息, 分别计算上述移动 基站与每个相邻小区之间的距离, 确定上述距离小于预先根据局部网络范 围设置的距离阈值的一个相邻小区作为上述终端的切换目标小区。 其中, 上述配置的相邻小区为上述终端所在交通工具的途径的所有停靠站点所处 的固定基站所管理的小区。
进一步地, 若移动基站控制设备存在有一个停靠站点处配置了至少两 个相邻小区, 或者存在有相邻至少两个停靠站点之间的距离很近(即相邻 两个停靠站点位于一个局部网络中 ), 上述移动基站控制设备有可能计算出 至少两个相邻小区与移动基站的距离小于预先根据局部网络范围设置的距 离阈值, 那么, 上述基站控制设备还可以进一步根据终端发送的相邻小区 信号的标识信息, 该相邻小区为上述终端所在交通工具的当前所在的停靠 站点所处的固定基站所管理的小区。 所述相邻小区信号的标识信息可以通 过接收终端发送的小区信号的测量报告中获取, 也可以是终端发送到移动 基站控制设备的其他消息中携带。 具体地, 在码分多址 (Code Division Multiple Access, 筒称 CDMA ) 系统网络中, 上述小区信号的测量报告中 的小区信号的标识信息可以包含伪随机码( Pseudo-random Number, 筒 称 PN ) , 还可以包含频点信息和 PN, 也可以包含频段信息、 频点信息和 PN; 在宽带码分多址(Wideband Code Division Multiple Access, 筒称 WCDMA )系统网络中,上述小区信号的测量 告中的小区信号的标识信息 可以包含主扰码, 还可以包含频点信息和主扰码, 也可以包含频段信息、 频点信息和主扰码; 在全球移动通信系统 (Global System for Mobile Communications, 筒称 GSM ) 网络中, 上述小区信号的测量 4艮告中的小 区信号的标识信息可以包含基站识别码( Base Transceiver Station Identity Code, 筒称 BSIC ) , 还可以包含频点信息和 BSIC, 也可以包含频段信息、 频点信息和 BSIC。
相应地, 上述移动基站控制设备可以先利用获取的上述移动基站的位 置信息和配置的相邻小区的配置信息中包含的位置信息, 分别计算上述移 动基站与上述相邻小区中每个相邻小区之间的距离, 确定出相邻小区与上 述移动基站之间的距离小于预先根据局部网络范围大小设置的距离阈值的 至少两个相邻小区, 进一步再根据相邻小区信号的标识信息与相邻小区的 对应关系, 从确定的上述至少两个相邻小区中确定出一个与测量 4艮告中包 含的相邻小区信号的标识信息对应的相邻小区 (当前实际的相邻小区)作 为上述终端的切换目标小区。
进一步可替换地, 上述移动基站控制设备还可以先根据相邻小区信号 的标识信息与相邻小区的对应关系, 确定出与测量报告中包含的相邻小区 信号的标识信息对应的至少两个相邻小区, 进一步再利用获取的上述移动 基站的位置信息和配置的上述至少两个相邻小区的配置信息中包含的位置 信息, 分别计算上述移动基站与确定的上述至少两个相邻小区中每个相邻 小区之间的距离, 确定出一个上述距离最小的相邻小区 (当前实际的相邻 小区)作为上述终端的切换目标小区。
本实施例中, 通过与移动基站通信的移动基站控制设备获取该移动基 站的位置信息, 当终端需要进行切换时, 根据获取的上述移动基站的位置 信息确定上述终端的切换目标小区, 由于上述移动基站的位置信息可以准 确反映出上述终端的当前位置, 使得与移动基站通信的移动基站控制设备 可以根据上述移动基站的位置信息准确确定出上述终端的切换目标小区, 从而实现了能够准确指示上述终端切换到终端所在交通工具的当前停靠站 点所处的固定基站所管理的小区, 保证通信的正常进行。 另外, 此方法不 需要终端的配合和修改, 适用于所有类型终端, 适应性好。
本实施例的切换目标小区的确定方法可以适用于多种移动通信网络, 例如: 全球移动通信系统( Global System for Mobile Communications, 筒 称 GSM ) 网络、 码分多址 ( Code Division Multiple Access, 筒称 CDMA ) 网络、 宽带码分多址(Wideband Code Division Multiple Access , 筒称 WCDMA )、 长期演进(Long Term Evolution, 筒称 LTE ) 网络等网络。
其中的移动基站可以为基站收发台 ( Base Transceiver Station, 筒称 BTS )、 节点 B ( NodeB ); 移动基站控制设备可以为基站控制器 ( Base Station Controller , 筒称 BSC )、 无线网络控制器 ( Radio Network Controller, 筒称 RNC )等网元; 移动基站与移动基站控制设备一体化设置 可以为演进型节点 B ( eNodeB )。
为使得上述本发明实施例提供的切换目标小区的确定方法更加清楚, 下面将以 CDMA制式的移动 BTS作为举例。
本发明一个实施例的场景可以如下: 在火车上部署了一个 CDMA制式 的移动 BTS, 配置有小区 Cell— M, 移动 BSC部署在北京某机房, 火车上 有一乘客, 其所持 UE为 CDMA制式的手机, 火车会经过停靠站点 A、 停 靠站点 B、 停靠站点 C、 停靠站点 D、 停靠站点 E和停靠站点 F, 其中, 停 靠站点 A、 停靠站点 B、 停靠站点 C、 停靠站点 D、 停靠站点 E和停靠站 点 F均部署有 CDMA制式的固定 BTS, 停靠站点 A配置有小区 Cell— A1 和 Cell— A2、停靠站点 B配置有小区 Cell— B、停靠站点 C配置有小区 Cell— C1 和 Cell— C2、停靠站点 D配置有小区 Cell— D、停靠站点 E配置有小区 Cell— E1 和 Cell— E2、 以及停靠站点 F配置有小区 Cell— F, 停靠站点 A与停靠站点 B之间的距离很近(即停靠站点 A与停靠站点 B位于一个局部网络中), 也 就是说, 小区 Cell— A1、 小区 Cell— A2和小区 Cell— B三个小区的 PN均不 相同, 其他小区的 PN可以相同, 也可以不相同, 为支持移动 BTS到停靠 站点 A、 停靠站点 B、 停靠站点 C、 停靠站点 D、 停靠站点 E和停靠站点 F 的切换, 将小区 Cell— A1和 Cell— A2、 小区 Cell— B、 Cell— C1和 Cell— C2、 Cell— D、 Cell— E1和 Cell— E2、 以及 Cell— F九个小区均配置为移动 BTS所 管理的小区 Cell— M的相邻小区。 图 2为本发明实施例二提供的切换目标小 区的确定方法的流程示意图,本实施例中,移动 BTS获取该移动 BTS的位 置信息, 向移动 BSC发送获取的该移动 BTS的位置信息, 由移动 BSC确 定 UE的切换目标小区。 如图 2所示, 本实施例的切换目标小区的确定方 法可以包括:
步骤 201、 移动 BTS实时获取该移动 BTS的位置信息;
具体地,上述移动 BTS获取该移动 BTS的位置信息的方法具体可以参 见上述本发明第一个实施例中的相关描述, 此处不再赘述。
步骤 202、移动 BTS向与该移动 BTS通信的移动 BSC上报该移动 BTS 的位置信息;
具体地,本步骤中,上述移动 BSC获取到移动 BTS上报的该移动 BTS 的位置信息之后,可以存储上述移动 BTS的位置信息。若 BTS的位置信息 没有发生变化, 移动 BSC则无需更新存储的 BTS的位置信息; 若 BTS的 位置信息发生变化, 移动 BSC则更新存储的 BTS的位置信息。
步骤 203、 UE通过移动 BTS向移动 BSC发送导频测量消息( Pilot Strength Measurement Message, 筒称 PSMM ), 上述 PSMM中包含小区 Cell— A1的 PN和小区 Cell— A1信号的信号强度;
进一步地,若移动 BTS获取的该移动 BTS的位置信息发生变化,上述 移动 BTS还可以将变化后的移动 BTS的位置信息携带在 PSMM中向移动 BSC发送, 以使移动 BSC获取最新的移动 BTS的位置信息。
步骤 204、 若上述小区 Cell— A1 信号的信号强度满足切换条件, 移动 BSC利用获取的上述移动 BTS的位置信息和配置的相邻小区的配置信息中 包含的位置信息, 分别进行距离计算, 确定出相邻小区与上述移动 BTS之 间的距离小于预先根据局部网络范围设置的距离阈值的小区 Cell— A1、小区 Cell— A2和小区 Cell— B三个小区;
本步骤中, 由于小区 Cell— A1、 小区 Cell— A2和小区 Cell— B三个小区 均配置为移动 BTS所管理的小区 Cell— M的相邻小区, 且处于两个停靠站 点的两个固定 BTS均位于一个局部网络中, 所以, 移动 BSC 匹配出了小 区 Cell— A1、 小区 Cell— A2和小区 Cell— B三个小区。
步骤 205、 移动 BSC根据相邻小区信号的标识信息与相邻小区的对应 关系, 确定出一个与上述 PSMM中包含的上述 PN对应的小区 Cell— A1作 为上述 UE的切换目标小区;
本步骤中, 由于小区 Cell— A1、 小区 Cell— A2和小区 Cell— B三个小区 的 PN均不相同, 所以, 移动 BSC确定出了小区 Cell— A1作为上述 UE的 切换目标小区。
步骤 206、 移动 BSC根据确定的切换目标小区, 指示 UE进行切换。 本实施例中, 通过与移动 BTS通信的移动 BSC获取该移动 BTS的位 置信息, 当 UE需要进行切换时, 根据获取的上述移动 BTS的位置信息确 定上述 UE的切换目标小区, 由于上述移动 BTS的位置信息可以准确反映 出上述 UE的当前位置,使得移动 BSC可以根据上述移动 BTS的位置信息 准确确定出上述 UE的切换目标小区,从而实现了能够准确指示上述 UE切 换到当前停靠站点所处的固定 BTS所管理的小区, 保证通信的正常进行。 另外, 此方法不需要 UE的配合和修改, 适用于所有类型 UE, 适应性好。
本发明一个实施例的场景还可以如下: 在火车上部署了一个 CDMA制 式的移动 BTS, 配置有小区 Cell— M, 移动 BSC部署在北京某机房, 火车 上有一乘客, 其所持 UE为 CDMA制式的手机, 火车会经过停靠站点 A、 停靠站点 ^ 停靠站点 C、 停靠站点口、 停靠站点 E和停靠站点 F, 其中, 停靠站点 A、 停靠站点 B、 停靠站点 C、 停靠站点 D、 停靠站点 E和停靠 站点 F均部署有 CDMA制式的固定 BTS,停靠站点 A配置有小区 Cell— A、 停靠站点 B配置有小区 Cell— B、停靠站点 C配置有小区 Cell— C、停靠站点 D配置有小区 Cell— D、 停靠站点 E配置有小区 Cell— E和停靠站点 F配置 有小区 Cell— F, 小区 Cell— A和小区 Cell— D两个小区的 PN相同 (其他小 区的 PN可以相同, 也可以不相同) 为支持移动 BTS到停靠站点 A、 停靠 站点 B、 停靠站点 C、 停靠站点 D、 停靠站点 E和停靠站点 F的切换, 将 小区 Cell— A、 小区 Cell— B、 Cell— C、 Cell— D、 Cell— E和 Cell— F六个小区 均配置为移动 BTS所管理的小区 Cell— M的相邻小区。 上述 UE的用户在 停靠站点 A下车, 该 UE需要进行通话态下的切换。 图 3为本发明实施例 二提供的切换目标小区的确定方法的流程示意图, 本实施例中, 移动 BTS 获取该移动 BTS的位置信息, 向移动 BSC发送获取的该移动 BTS的位置 信息, 由移动 BSC确定 UE的切换目标小区。 如图 3所示, 本实施例的切 换目标小区的确定方法可以包括:
步骤 301、 移动 BTS实时获取该移动 BTS的位置信息;
具体地,上述移动 BTS获取该移动 BTS的位置信息的方法具体可以参 见上述本发明第一实施例中的相关描述, 此处不再赘述。
步骤 302、移动 BTS向与该移动 BTS通信的移动 BSC上报该移动 BTS 的位置信息;
具体地,本步骤中,上述移动 BSC获取到移动 BTS上报的该移动 BTS 的位置信息之后,可以存储上述移动 BTS的位置信息。若 BTS的位置信息 没有发生变化, 移动 BSC则无需更新存储的 BTS的位置信息; 若 BTS的 位置信息发生变化, 移动 BSC则更新存储的 BTS的位置信息。
步骤 303、 UE通过移动 BTS向移动 BSC发送导频测量消息( Pilot Strength Measurement Message, 筒称 PSMM ), 上述 PSMM中包含小区 Cell— A的 PN和小区 Cell— A信号的信号强度;
进一步地,若移动 BTS获取的该移动 BTS的位置信息发生变化,上述 移动 BTS还可以将变化后的移动 BTS的位置信息携带在 PSMM中向移动 BSC发送, 以使移动 BSC获取最新的移动 BTS的位置信息。
步骤 304、若上述小区 Cell— A信号的信号强度满足切换条件,移动 BSC 根据相邻小区信号的标识信息与相邻小区的对应关系, 进行相邻小区的匹 配, 确定出与上述 PSMM 中包含的上述 PN 对应的小区 Cell— A和小区 Cell— D。
本步骤中,由于小区 Cell— A和小区 Cell— D两个小区均配置为移动 BTS 所管理的小区 Cell— M的相邻小区,且两个小区信号的 PN完全一致,所以, 移动 BSC匹配出了小区 Cell— A和小区 Cell— D两个小区。
步骤 305、 移动 BSC利用获取的上述移动 BTS的位置信息和配置的 与上述 PN对应的小区 Cell— A和小区 Cell— D两个小区的配置信息中包含的 位置信息, 分别进行距离计算, 确定出一个距离最小的小区 Cell— A作为 UE的切换目标小区;
本步骤中, 由于小区 Cell— A和小区 Cell— D两个小区的 PN相同,也就 是说, 处于两个停靠站点的两个固定 BTS不可能位于一个局部网络中, 所 以, 移动 BSC确定出了小区 Cell— A作为上述 UE的切换目标小区。
步骤 306、 移动 BSC根据确定的切换目标小区, 指示 UE进行切换。 本实施例中, 通过与移动 BTS通信的移动 BSC获取该移动 BTS的位 置信息, 当 UE需要进行切换时, 根据获取的上述移动 BTS的位置信息确 定上述 UE的切换目标小区, 由于上述移动 BTS的位置信息可以准确反映 出上述 UE的当前位置,使得移动 BSC可以根据上述移动 BTS的位置信息 准确确定出上述 UE的切换目标小区,从而实现了能够准确指示上述 UE切 换到当前停靠站点所处的固定 BTS所管理的小区, 保证通信的正常进行。 另外, 此方法不需要 UE的配合和修改, 适用于所有类型 UE, 适应性好。
需要说明的是: 对于前述的各方法实施例, 为了筒单描述, 故将其都 表述为一系列的动作组合, 但是本领域技术人员应该知悉, 本发明并不受 所描述的动作顺序的限制, 因为依据本发明, 某些步骤可以采用其他顺序 或者同时进行。 其次, 本领域技术人员也应该知悉, 说明书中所描述的实 施例均属于优选实施例, 所涉及的动作和模块并不一定是本发明所必须的。
在上述实施例中, 对各个实施例的描述都各有侧重, 某个实施例中没 有详述的部分, 可以参见其他实施例的相关描述。
图 4为本发明一个实施例提供的接入网设备的结构示意图, 如图 4所 示,本实施例的接入网设备可以包括位置信息接收装置 41和目标小区确定 装置 43。 其中, 位置信息接收装置 41 获取移动基站的位置信息, 上述移 动基站为终端接入的基站, 若上述终端需要进行切换, 目标小区确定装置 43根据上述移动基站的位置信息, 确定上述终端的切换目标小区。
上述图 1对应的实施例中移动基站控制设备、 图 2对应的实施例中移 动 BSC、 图 3对应的实施例中移动 BSC的功能均可以由本发明实施例提 供的接入网设备实现。
具体地,上述位置信息可以是移动基站通过接收全球定位系统( Global Positioning System, 筒称 GPS )信号而计算得到的 GPS地理位置经纬度 信息, 例如: 东经 116.46度, 北纬 39.92度。
具体地,本实施例中的目标小区确定装置 43具体可以包括第一距离计 算单元 431和第一小区确定单元 432。 其中第一距离计算单元 431用于利 用上述移动基站的位置信息和配置的相邻小区的配置信息中包含的位置信 息, 分别计算上述移动基站与配置的相邻小区中每个相邻小区之间的距离, 第一小区确定单元 432用于确定出配置的相邻小区与上述移动基站之间的 距离小于预先设置的距离阈值的一个配置的相邻小区作为上述终端的切换 目标小区, 上述距离阀值是根据局部网络范围大小设定的; 其中, 上述配 置的相邻小区为上述终端所在交通工具的所有停靠站点所处的固定基站所 管理的小区。
本实施例中, 通过位置信息接收装置获取移动基站的位置信息, 当终 端需要进行切换时, 目标小区确定装置可以根据位置信息接收装置获取的 上述移动基站的位置信息确定上述终端的切换目标小区, 由于上述移动基 站的位置信息可以准确反映出上述终端的当前位置, 使得与移动基站通信 的移动基站控制设备可以根据上述移动基站的位置信息准确确定出上述终 端的切换目标小区, 从而实现了能够准确指示上述终端切换到所在交通工 具的当前停靠站点所处的固定基站所管理的小区, 保证通信的正常进行。 另外, 此方法不需要终端的配合和修改, 适用于所有类型终端, 适应性好。
图 5为本发明一个实施例提供的接入网设备的结构示意图, 如图 5所 示, 与上一实施例相比, 本实施例的接入网设备还可以进一步包括标识信 息接收装置 42, 用于获取上述终端发送的相邻小区信号的标识信息, 该相 邻小区为上述终端所在交通工具的当前所在的停靠站点所处的固定基站所 管理的小区。 具体地, 在码分多址(Code Division Multiple Access, 筒称 CDMA ) 系统网络中, 上述小区信号的标识信息可以包含伪随机码 ( Pseudo-random Number, 筒称 PN ) , 还可以包含频点信息和 ΡΝ, 也 可以包含频段信息、 频点信息和 ΡΝ; 在宽带码分多址(Wideband Code Division Multiple Access, 筒称 WCDMA )系统网络中, 上述小区信号的标 识信息可以包含主扰码, 还可以包含频点信息和主扰码, 也可以包含频段 信息、频点信息和主扰码;在全球移动通信系统( Global System for Mobile Communications, 筒称 GSM ) 网络中, 上述小区信号的标识信息可以包 含基站识别码 ( Base Transceiver Station Identity Code, 筒称 BSIC ) , 还可以包含频点信息和 BSIC, 也可以包含频段信息、 频点信息和 BSIC。 具体地, 标识信息接收装置 42具体可以接收上述终端发送的测量报告, 上 述测量报告中包含相邻小区信号的标识信息。
相应地, 目标小区确定装置 43具体可以进一步根据上述移动基站的位 置信息和上述相邻小区信号的标识信息, 确定上述终端的切换目标小区。
具体地, 目标小区确定装置 43可以包括第二距离计算单元 433、 第二 小区确定单元 434和第三小区确定单元 435。其中,第二距离计算单元 433 用于利用上述移动基站的位置信息和配置的相邻小区的配置信息中包含的 位置信息, 分别计算上述移动基站与配置的相邻小区中每个相邻小区之间 的距离, 第二小区确定单元 434用于确定出配置的相邻小区与上述移动基 站之间的距离小于预先设置的距离阈值的至少两个配置的相邻小区, 上述 距离阀值是根据局部网络范围大小设置的, 第三小区确定单元 435用于根 据相邻小区信号的标识信息与相邻小区的对应关系, 从上述至少两个配置 的相邻小区中确定出一个与上述相邻小区信号的标识信息对应的相邻小区 作为上述终端的切换目标小区。
本实施例中, 通过位置信息接收装置获取移动基站的位置信息, 以及 标识信息接收装置获取终端发送的相邻小区信号的标识信息, 当终端需要 进行切换时, 目标小区确定装置可以根据位置信息接收装置获取的上述移 动基站的位置信息和标识信息接收装置获取的上述相邻小区信号的标识信 息, 确定上述终端的切换目标小区, 由于上述移动基站的位置信息可以准 确反映出上述终端的当前位置, 使得与移动基站通信的移动基站控制设备 可以根据上述移动基站的位置信息准确确定出上述终端的切换目标小区, 从而实现了能够准确指示上述终端切换到当前停靠站点所处的固定基站所 管理的小区, 保证通信的正常进行。 另外, 此方法不需要终端的配合和修 改, 适用于所有类型终端, 适应性好。
可替换地, 可以参见图 6, 目标小区确定装置 43还可以包括第四小区 确定单元 436、 第三距离计算单元 437和第五小区确定单元 438。 其中, 第四小区确定单元 436用于根据相邻小区信号的标识信息与相邻小区的对 应关系, 确定出与上述相邻小区信号的标识信息对应的至少两个相邻小区, 第三距离计算单元 437用于利用上述移动基站的位置信息和配置的上述至 少两个相邻小区的配置信息中包含的位置信息, 分别计算上述移动基站与 配置的上述至少两个相邻小区中每个相邻小区之间的距离, 第五小区确定 单元 438用于确定出一个上述距离最小的相邻小区作为上述终端的切换目 标小区。
进一步地, 上述图 4、 图 5和图 6对应的实施例中的位置信息接收装 置 41具体可以获取移动基站发送的该移动基站的位置信息; 或者具体还可 以直接获取移动基站的位置信息。
本发明一个实施例还可以提供一种切换目标小区的确定系统, 包括上 述图 4、 图 5或图 6对应的实施例提供的接入网设备。
具体地, 上述接入网设备的具体描述可以参见上述图 4、 图 5或图 6 对应的实施例中的内容。
需要说明的是: 本发明实施例中, 移动基站控制设备是与移动基站通 信的基站控制设备, 该移动基站控制设备可以与移动基站类似, 部署在可 移动的交通工具内, 或者还可以与一般的固定基站控制设备类似, 部署在 某一个固定地点, 只要保证能够与移动基站通信即可。
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。 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精神和范围。

Claims

权利要求
1、 一种切换目标小区的确定方法, 其特征在于, 包括:
与移动基站通信的移动基站控制设备获取所述移动基站的位置信息, 所述移动基站为终端接入的基站;
若所述终端需要进行切换, 所述移动基站控制设备根据所述移动基站 的位置信息, 确定所述终端的切换目标小区。
2、 根据权利要求 1所述的方法, 其特征在于, 所述移动基站控制设备 根据所述移动基站的位置信息, 确定所述终端的切换目标小区包括:
所述移动基站控制设备利用所述移动基站的位置信息和配置的相邻小 区的配置信息中包含的位置信息, 分别计算所述移动基站与配置的相邻小 区中每个相邻小区之间的距离, 确定出配置的相邻小区与所述移动基站之 间的距离小于预先设置的距离阈值的一个配置的相邻小区作为所述终端的 切换目标小区, 所述距离阀值是根据局部网络范围大小设定的;
其中, 所述配置的相邻小区为所述终端所在交通工具的停靠站点所处 的固定基站所管理的小区。
3、 根据权利要求 1所述的方法, 其特征在于, 还包括: 所述移动基站 控制设备获取所述终端发送的相邻小区信号的标识信息, 所述相邻小区为 所述终端所在交通工具的当前所在的停靠站点所处的固定基站所管理的小 区;
所述移动基站控制设备根据所述移动基站的位置信息, 确定所述终端 的切换目标小区包括:
所述移动基站控制设备根据所述移动基站的位置信息和所述相邻小区 信号的标识信息, 确定所述终端的切换目标小区。
4、 根据权利要求 3所述的方法, 其特征在于, 所述移动基站控制设备 根据所述移动基站的位置信息和所述相邻小区信号的标识信息, 确定所述 终端的切换目标小区包括:
所述移动基站控制设备利用所述移动基站的位置信息和配置的相邻小 区的配置信息中包含的位置信息, 分别计算所述移动基站与配置的相邻小 区中每个相邻小区之间的距离, 确定出配置的相邻小区与所述移动基站之 间的距离小于预先设置的距离阈值的至少两个配置的相邻小区, 所述距离 阀值是根据局部网络范围大小设置的;
所述移动基站控制设备根据所述相邻小区信号的标识信息与相邻小区 的对应关系, 从所述至少两个配置的相邻小区中确定出一个与所述相邻 d、 区信号的标识信息对应的相邻小区作为所述终端的切换目标小区。
5、 根据权利要求 3所述的方法, 其特征在于, 所述移动基站控制设备 根据所述移动基站的位置信息和所述相邻小区信号的标识信息, 确定所述 终端的切换目标小区包括:
所述移动基站控制设备根据相邻小区信号的标识信息与相邻小区的对 应关系, 确定出与所述相邻小区信号的标识信息对应的至少两个相邻小区; 所述移动基站控制设备利用所述移动基站的位置信息和配置的所述至 少两个相邻小区的配置信息中包含的位置信息, 分别计算所述移动基站与 配置的所述至少两个相邻小区中每个相邻小区之间的距离, 确定出一个与 所述移动基站距离最小的相邻小区作为所述终端的切换目标小区。
6、 根据权利要求 3至 5任一所述的方法, 其特征在于, 所述移动基站 控制设备获取所述终端发送的相邻小区信号的标识信息包括:
所述移动基站控制设备接收所述终端发送的测量报告, 所述测量报告 中包含相邻小区信号的标识信息。
7、 根据权利要求 1所述的方法, 其特征在于, 所述移动基站的位置信 息包括所述移动基站的 GPS地理位置经纬度信息。
8、 根据权利要求 3至 5任一所述的方法, 其特征在于, 所述相邻小区 信号的标识信息包含以下标识中的任意一种: 伪随机码;
频点信息和伪随机码;
频段信息、 频点信息和伪随机码;
主扰码;
频点信息和主 4尤码;
频段信息、 频点信息和主扰码;
基站识别码;
频点信息和基站识别码;
频段信息、 频点信息和基站识别码。
9、 根据权利要求 1所述的方法, 其特征在于, 所述与移动基站通信的 移动基站控制设备获取所述移动基站的位置信息包括:
与移动基站通信的移动基站控制设备接收所述移动基站发送的所述移 动基站的位置信息。
1 0、 一种接入网设备, 其特征在于, 包括:
位置信息接收装置, 用于获取移动基站的位置信息, 所述移动基站为 终端接入的基站;
目标小区确定装置, 用于若所述终端需要进行切换, 根据所述移动基 站的位置信息, 确定所述终端的切换目标小区。
1 1、 根据权利要求 10所述的接入网设备, 其特征在于, 所述目标小区 确定装置包括:
第一距离计算单元, 用于利用所述移动基站的位置信息和配置的相邻 小区的配置信息中包含的位置信息, 分别计算所述移动基站与配置的相邻 小区中每个相邻小区之间的距离;
第一小区确定单元, 用于确定出配置的相邻小区与所述移动基站之间 的距离小于预先设置的距离阈值的一个配置的相邻小区作为所述终端的切 换目标小区, 所述距离阀值是根据局部网络范围大小设定的; 其中, 所述配置的相邻小区为所述终端所在交通工具的所有停靠站点 所处的固定基站所管理的小区。
12、 根据权利要求 10所述的接入网设备, 其特征在于, 所述接入网设 备还包括标识信息接收装置, 用于获取所述终端发送的相邻小区信号的标 识信息, 所述相邻小区为所述终端所在交通工具的当前所在的停靠站点所 处的固定基站所管理的小区; 所述目标小区确定装置具体用于根据所述移 动基站的位置信息和所述相邻小区信号的标识信息, 确定所述终端的切换 目标小区。
13、 根据权利要求 12所述的接入网设备, 其特征在于, 所述目标小区 确定装置包括:
第二距离计算单元, 用于利用所述移动基站的位置信息和配置的相邻 小区的配置信息中包含的位置信息, 分别计算所述移动基站与配置的相邻 小区中每个相邻小区之间的距离;
第二小区确定单元, 用于确定出配置的相邻小区与所述移动基站之间 的距离小于预先设置的距离阈值的至少两个配置的相邻小区, 所述距离阀 值是根据局部网络范围大小设置的;
第三小区确定单元, 用于根据相邻小区信号的标识信息与相邻小区的 对应关系, 从所述至少两个配置的相邻小区中确定出一个与所述相邻小区 信号的标识信息对应的相邻小区作为所述终端的切换目标小区。
14、 根据权利要求 12所述的接入网设备, 其特征在于, 所述目标小区 确定装置包括:
第四小区确定单元, 用于根据相邻小区信号的标识信息与相邻小区的 对应关系, 确定出与所述相邻小区信号的标识信息对应的至少两个相邻小 区;
第三距离计算单元, 用于利用所述移动基站的位置信息和配置的所述 至少两个相邻小区的配置信息中包含的位置信息, 分别计算所述移动基站 与配置的所述至少两个相邻小区中每个相邻小区之间的距离; 第五小区确定单元, 用于确定出一个与所述移动基站距离最小的相邻 小区作为所述终端的切换目标小区。
15、 根据权利要求 12至 14任一所述的接入网设备, 其特征在于, 所 述标识信息接收装置具体用于接收所述终端发送的测量报告, 所述测量报 告中包含相邻小区信号的标识信息。
16、 根据权利要求 10所述的接入网设备, 其特征在于, 所述移动基站 的位置信息包括所述移动基站的 GPS地理位置经纬度信息。
17、 根据权利要求 12至 14任一所述的接入网设备, 其特征在于, 所 述相邻小区信号的标识信息包含以下标识中的任意一种:
伪随机码;
频点信息和伪随机码;
频段信息、 频点信息和伪随机码;
主扰码;
频点信息和主 4尤码;
频段信息、 频点信息和主扰码;
基站识别码;
频点信息和基站识别码;
频段信息、 频点信息和基站识别码。
18、 根据权利要求 10所述的接入网设备, 其特征在于, 所述位置信息 接收装置具体用于接收移动基站发送的所述移动基站的位置信息。
19、 一种切换目标小区的确定系统, 其特征在于, 包括权利要求 10至 18任一权利要求所述的接入网设备。
PCT/CN2011/080575 2010-10-12 2011-10-09 切换目标小区的确定方法及系统、接入网设备 WO2012048626A1 (zh)

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