WO2014086012A1 - 一种小区切换方法及设备 - Google Patents

一种小区切换方法及设备 Download PDF

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Publication number
WO2014086012A1
WO2014086012A1 PCT/CN2012/085998 CN2012085998W WO2014086012A1 WO 2014086012 A1 WO2014086012 A1 WO 2014086012A1 CN 2012085998 W CN2012085998 W CN 2012085998W WO 2014086012 A1 WO2014086012 A1 WO 2014086012A1
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WO
WIPO (PCT)
Prior art keywords
cell
base station
small base
handover
adjacent
Prior art date
Application number
PCT/CN2012/085998
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English (en)
French (fr)
Inventor
郑创明
吴建明
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/CN2012/085998 priority Critical patent/WO2014086012A1/zh
Priority to CN201280076967.7A priority patent/CN104782165A/zh
Publication of WO2014086012A1 publication Critical patent/WO2014086012A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists

Definitions

  • the present invention relates to the field of communications, and in particular, to a cell handover method and device. Background technique
  • Heterogeneous Network is a future-oriented innovative mobile broadband network architecture, which is composed of cells of different sizes and different types, such as cells including 2G, 3G, 4G networks, such as including macro cells (for example) : Macro Cell ), microcell (eg Micro Cell), picocell (eg Pico Cell) and femtocell (eg Femto Cell).
  • HetNet coordinated the deployment of key components in the wireless infrastructure of these communities, allowing these components to work together to increase data throughput, mobility and user experience, fully meeting the performance requirements of mobile broadband users for 2G, 3G, 4G networks.
  • the macro cell and the micro cell are usually used as outdoor coverage cells, and the pico cell and the femto cell are usually used as indoor coverage cells.
  • the same frequency group can be used indoors and outdoors, and different frequency can also be used, but The frequency resources are relatively lacking, and the same frequency networking is usually used.
  • UE User Equipment
  • the station of the indoor cell of the service reports the measurement information, and the station selects the cell with the strongest signal in the measurement information as the handover target cell according to the measurement information reported by the UE, and controls the UE to switch to the target cell.
  • the cell with the strongest signal is a macro cell, that is, when the UE moves to the boundary of the indoor cell, the UE switches to the macro cell.
  • the embodiment of the invention provides a cell handover method and device, which can reduce the burden of the macro cell.
  • a first aspect of the present invention provides a cell handover method, including:
  • the small base station selects, from the neighboring cells included in the measurement report, a non-macro cell that satisfies the handover condition as the target cell of the user equipment;
  • the small base station sends a handover command to the user equipment to switch to the target cell.
  • the selecting, by the small base station, a non-macro cell that meets a handover condition, as a target cell of the user equipment includes:
  • the small base station selects, from the neighboring cells included in the measurement report, a cell that meets the handover condition and whose cell type is consistent with the cell type of the cell covered by the small cell, as the target cell of the user equipment; or
  • the small base station selects, from the neighboring cells included in the measurement report, a cell that meets the handover condition and has the highest handover priority level as the target cell of the user equipment, where the handover priority of the neighboring cell is Set.
  • the small base station selects, from a neighboring cell included in the measurement report, a handover condition and a cell type and the Before the cell with the cell type of the cell covered by the small cell is the target cell of the user equipment, the method further includes:
  • the small base station acquires cell type information of the neighboring cell.
  • the small base station selects, from the neighboring cells included in the measurement report, that the handover condition is met and the handover priority level is the highest.
  • the method further includes:
  • the cell in the neighboring cell that matches the cell type of the cell covered by the small cell has the highest handover priority.
  • the method further includes:
  • the setting, by the small base station, the handover priority level of the neighboring cell according to the cell type information of the neighboring cell includes: The small base station sets a handover priority level of the neighboring cell according to the cell type identifier in the neighbor cell list.
  • a second aspect of the present invention provides a small base station, including: a receiving unit, a selecting unit, and a sending unit, where:
  • the receiving unit is configured to receive a measurement report sent by the user equipment for a neighboring cell of the cell covered by the small base station;
  • the selecting unit is configured to select, according to a neighboring cell included in the measurement report received from the receiving unit, a non-macro cell that satisfies a handover condition as a target cell of the user equipment;
  • the sending unit is configured to send, to the user equipment, a handover command that is switched to a target cell selected by the selection unit.
  • the selecting unit is specifically configured to: select, from a neighboring cell included in the measurement report, a cell that meets a handover condition and a cell type and a cell covered by the small base station a cell with the same cell type as the target cell of the user equipment; or
  • the selecting unit is specifically configured to select, from the neighboring cells included in the measurement report, a cell that meets the handover condition and has the highest handover priority as the target cell of the user equipment, where the handover of the neighboring cell takes precedence.
  • the level is preset.
  • the small base station further includes:
  • An information acquiring unit configured to acquire cell type information of the neighboring cell.
  • the small base station further includes:
  • a setting unit configured to set a switching priority level of the neighboring cell according to cell type information of the neighboring cell
  • the cell in the neighboring cell that matches the cell type of the cell covered by the small cell has the highest handover priority.
  • the small base station further includes:
  • an identifier adding unit configured to add, according to the cell type information acquired by the information acquiring unit, a cell type identifier of the neighboring cell in the neighbor cell list;
  • the setting unit is specifically configured to add, according to the identifier adding unit, the neighbor cell list
  • the cell type identifier sets the handover priority level of the neighboring cell.
  • a third aspect of the present invention provides a small base station, including: a processor, a communication interface, and a memory: the communication interface is configured to receive a message sent by a user equipment, and send a message to the user equipment; a code, and the processor is configured to invoke program code stored in the memory to perform the following operations:
  • a non-macro cell that meets a handover condition is selected from a neighboring cell included in the measurement report that is performed by the processor as a target cell of the user equipment.
  • the operations include:
  • the processor is configured to select, from a neighboring cell included in the measurement report, a handover condition and a cell type and Before the cell with the same cell type as the target cell of the user equipment is used as the target cell of the user equipment, the cell is also used to perform the following operations:
  • the processor is configured to select, from a neighboring cell included in the measurement report, that a handover condition is met and a priority is switched. Before the highest cell is used as the target cell of the user equipment, the following operations are also performed:
  • the performing after performing the acquiring cell type information of the neighboring cell, performing a cell according to the neighboring cell Before the type information is set to the priority level of the neighboring cell, the method is further configured to: add a cell type identifier of the neighboring cell in a neighboring cell list according to the cell type information;
  • the performing, by the processor, the setting of the priority level of the neighboring cell according to the cell type information of the neighboring cell includes:
  • the small base station receives the measurement report sent by the user equipment for the neighboring cell of the cell covered by the small base station; the small base station selects a non-macro that meets the switching condition from the neighboring cells included in the measurement report.
  • the cell serves as a target cell of the user equipment; the small base station sends a handover command to the user equipment to switch to the target cell.
  • the target cell thus selected is a non-macro cell, thereby reducing the burden on the macro cell.
  • FIG. 1 is a schematic flowchart of a cell handover method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of another cell handover method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of another cell handover method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of another cell handover method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an optional application scenario according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of an optional application scenario according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of another cell handover method according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a small base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another small base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of another small base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another small base station according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of another small base station according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic flowchart of a cell handover method according to an embodiment of the present invention. As shown in FIG. 1, the method includes:
  • the small base station receives a measurement report sent by the UE for a neighboring cell of the cell covered by the small base station.
  • the small base station selects, from the neighboring cells included in the foregoing measurement report, a non-macro cell that satisfies the handover condition, and uses the cell as the target cell of the UE.
  • the non-macro cell is a cell whose cell coverage is smaller than a macro cell, for example, a cell, a pico cell, or a femto cell.
  • the small base station sends, to the UE, a handover command that is switched to the target cell.
  • the UE When the UE receives the handover command sent in step 103, the UE can switch to the target cell.
  • the target cell selected in step 102 is a non-macro cell, so that the burden of reducing the base station of the macro cell can be achieved.
  • step 102 selects a non-macro cell that satisfies the handover condition as the target cell, so that the UE can switch from the pico cell to another non-macro cell instead of switching to the macro cell.
  • the burden on the macro cell can be reduced.
  • the embodiment can be applied to a HetNet, a Wideband Code Division Multiple Access (WCDMA) network, a Global System of Mobile communication (GSM) network, and a code division. Code Division Multiple Access (CDMA) network and Time Division Synchronous Code Division Multiple Access (TDS-CDMA) network, etc., that is, the small base station may be a small base station in any of the above HetNet, WCDMA network, GSM network, CDMA network, and TDS-CDM network.
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • TDS-CDMA Time Division Synchronous Code Division Multiple Access
  • the cell covered by the small base station may specifically refer to a cell whose coverage is smaller than a macro cell, for example, a micro cell, a pico cell, and a femto cell. That is, the small base station may include: a base station of a micro cell, a base station of a pico cell, or a base station of a femto cell.
  • the small base station selects a non-macro cell that satisfies the handover condition from the neighboring cells of the small cell coverage cell as the target cell, and the small base station sends a handover command to the UE to switch to the target cell.
  • the target cell thus selected is a non-macro cell, thereby reducing the burden on the macro cell.
  • 2 is a schematic flowchart of another cell handover method according to an embodiment of the present invention. As shown in FIG. 2, the method includes:
  • the small base station receives a measurement report sent by the UE for a neighboring cell of the cell covered by the small base station.
  • the cell covered by the small base station may be understood as the current serving cell of the UE.
  • the small base station selects, from the neighboring cells included in the foregoing measurement report, a cell that meets the handover condition and whose cell type matches the cell type of the cell covered by the small cell, is the target cell of the UE.
  • the cell selected from the neighboring cells is a cell that is consistent with the cell type of the cell covered by the small cell, and the cell covered by the small cell is a non-macro cell, and the selected cell is also Non-macro cell.
  • the selected cell is the same as the cell type of the cell covered by the small cell, that is, the cell before the UE switching cell and the cell type of the cell after the handover are the same, so that the UE can complete the cell handover more easily.
  • the cell type information of the foregoing neighboring cell may be pre-acquired.
  • the cell type may refer to a cell type defined by a Long Term Evolution (LTE) protocol, where the cell type may include:
  • Macro cell, cell, pico cell and femto cell Macro cell, cell, pico cell and femto cell.
  • the method may further include: before step 202:
  • the small base station acquires cell type information of the foregoing neighboring cell
  • the method for obtaining the cell type information includes, but is not limited to, the following obtaining modes: the small base station receives the operation information input by the user for the foregoing neighboring cell, according to the foregoing operation information. Generating cell type information of the foregoing neighboring cell; or
  • the small base station acquires the cell type information of the neighboring cell according to the relationship information of the neighboring cell that is acquired in advance; the relationship information includes the cell type information of the neighboring cell; or
  • the small base station receives the cell type information of the neighboring cell sent by the base station of the neighboring cell.
  • the cell type information of acquiring the neighboring cell by the small base station itself may be implemented.
  • the relationship information of the neighboring cells may be specifically used in the prior art, or may be preset in the present invention. It is also possible to transmit the cell type information of each of the above cells by the base station of a neighboring cell.
  • the small base station sends, to the UE, a handover command that is switched to the target cell.
  • the step 202 may specifically include:
  • the small base station selects, from the neighboring cells included in the measurement report, a cell having the strongest signal in the cell that satisfies the handover condition and whose cell type matches the cell type of the cell covered by the small base station, is the target cell of the user equipment.
  • a cell having the strongest selection signal among a plurality of cells satisfying the handover condition and having the cell type and the cell type of the cell covered by the small base station may be used as the target cell.
  • step 202 selects the pico cell that satisfies the handover condition as the target cell.
  • the pico cell is generally used as an indoor cell, so that the UE can switch to the indoor cell in the indoor cell instead of switching to the macro cell, which can reduce the burden on the macro cell.
  • the pico cell since the pico cell mainly plays the role of absorbing the traffic of the macro cell, the UE can switch between the pico cells to improve the traffic of the macro cell.
  • the UE is currently serving in the micro cell, and when the UE moves to the edge of the micro cell, the small cell may receive the measurement report sent by the UE, and the measurement report is
  • the step 202 selects the micro cell that satisfies the handover condition as the target cell, so that the UE does not switch to the macro cell, and the burden of the macro cell can be reduced.
  • FIG. 3 is a schematic flowchart of another cell switching method according to an embodiment of the present invention. As shown in FIG. 3, the method includes:
  • the small base station receives a measurement report sent by the UE for a neighboring cell of the cell covered by the small base station.
  • the small base station selects, from the neighboring cells included in the measurement report, a cell that meets the handover condition and has the highest switching priority level as the target cell of the UE, where the switching priority level of the neighboring cell is preset.
  • the foregoing switching priority level of the neighboring cells may be set as follows:
  • the higher the handover priority setting of the cell having the higher cell type similarity to the cell covered by the small base station the lower the handover priority level of the cell having the lower similarity to the cell type of the cell covered by the small base station.
  • the handover priority level of the cell in the neighboring cell that matches the cell type of the cell covered by the small cell is set to be the highest, and the handover priority of the macro cell in the neighbor cell is the lowest.
  • the handover priority of the pico cell in the neighbor cell is set to be the highest, and the priority of the micro cell or the femto cell in the neighbor cell is set next to the handover of the pico cell.
  • Priority level setting the handover priority level of the macro cell in the foregoing neighboring cell to be the lowest.
  • the small base station sends, to the UE, a handover command that is switched to the target cell.
  • the UE when the UE sends the measurement report, the UE may be in a connected state or an idle state (for example, an Idle state).
  • the present invention can control the UE to perform cell handover when the UE performs a service connection, and can also control the UE to perform cell reselection when the UE is in an idle state.
  • the method may further include:
  • the small base station acquires cell type information of the neighboring cell.
  • the small base station sets, according to the cell type information of the neighboring cell, a handover priority level of the neighboring cell, where the neighboring cell has a small cell type consistent with the cell covered by the small cell.
  • the zone has the highest switching priority.
  • step 302 may select the cell with the highest handover priority from the neighboring cells as the UE handover target cell according to the priority level set in step 305.
  • step 304 may include:
  • the small base station receives the operation information input by the user for the neighboring cell, and generates the cell type information of the neighboring cell according to the operation information;
  • the small base station acquires the cell type information of the neighboring cell according to the relationship information of the neighboring cell that is acquired in advance; the relationship information includes the cell type information of the neighboring cell; or
  • the small base station receives the cell type information of the neighboring cell sent by the base station of the neighboring cell.
  • the cell type information of acquiring the neighboring cell by the small base station itself may be implemented.
  • the relationship information of the neighboring cells may be specifically used in the prior art, or may be preset in the present invention. It is also possible to transmit the cell type information of each of the above cells by the base station of a neighboring cell.
  • the cell type may refer to a cell type defined by the LTE protocol, where the cell type may include:
  • Macro cell, cell, pico cell and femto cell Macro cell, cell, pico cell and femto cell.
  • the method may further include:
  • the small base station adds the cell type identifier of the neighboring cell to the neighbor cell list according to the cell type information.
  • Step 305 can include:
  • the small base station sets the handover priority level of the neighboring cell according to the cell type identifier in the neighboring cell list.
  • the foregoing neighbor cell list may be used in an existing manner, or may be a neighbor cell list preset in the present invention.
  • the target cell is selected more quickly and conveniently in the subsequent target cell selection process.
  • the pico cell and the femto cell mainly act on the indoor cell, and are used to absorb the traffic of the macro cell.
  • the mid-pico cell and the femto cell that identify the neighboring cell are implemented as cells for absorbing the traffic of the macro cell, and the micro-region is mainly used as an outdoor cell in practical applications. It is used to increase the capacity of the network.
  • a cell that identifies a micro cell in a neighboring cell to increase network capacity can be implemented.
  • the step 302 may specifically include:
  • the small base station selects, from the neighboring cells included in the measurement report, the cell with the strongest signal satisfying the handover condition and having the highest handover priority level as the target cell of the UE.
  • a network architecture is shown in FIG. 5, wherein Cl, C2, C3, and C4 respectively represent four buildings, and C1P, C2P, C3P, and C4P respectively represent Cl, C2, C3, and Small base station in the picocell of the building shown in C4.
  • the three picocells covered by the three small base stations indicated by C1P continuously cover the building indicated by C1
  • the three picocells covered by the three small base stations indicated by C2P continuously cover the building indicated by C2.
  • FIGS 5 respectively represent base stations of three macro cells, wherein the macro cell covered by the base station indicated by M1 can cover the building indicated by C1 and C2, and the macro covered by the base station indicated by M3
  • the cell can cover the buildings shown by C3 and C4, that is, Cl, C2, C3, and C4 represent the picocells and M1 and M3 of the four buildings covered by the small base stations shown by C1P, C2P, C3P, and C4P, respectively.
  • the small base station in the above step is a small base station of the pico cell, such as the small base station 1 among the three small base stations indicated by C1P, that is, the UE is currently in the building indicated by C1, and the current serving cell of the UE (The cell covered by the small base station in step 301) is a pico cell covered by the small base station 1 among the three small base stations indicated by C1P.
  • the small base station 1 can acquire the cell type information of the pico cell covered by the other two small base stations indicated by C1P, and acquire the cell type information of the macro cell covered by the base station indicated by M1.
  • step 305 the pico cell covered by the other two small base stations indicated by C1P has the highest priority, and the macro cell covered by the base station indicated by M1 has the lowest priority. Then, through steps 301, 302, and 304, the UE is controlled to switch to the pico cell covering the building indicated by C1, that is, to the pico cell covered by the small base station indicated by C1P, and not to the macro cell, to reduce the macro cell. burden.
  • the blocks shown by P1, P2, and P3 in FIG. 6 respectively represent three consecutive picocells covering the building in FIG. 6, and M1 represents the base station of the macro cell.
  • the macro cell can also cover the building in FIG. 6, and the current serving cell of the UE is covered by the small base station in step 301.
  • the cell is a pico cell indicated by the PI, and the current location of the UE is the position shown by the black frame in FIG. 6.
  • the switching priority level of the neighboring cell of the pico cell indicated by P1 can be set, and the pico cell indicated by P2 and the pico cell represented by P3 are obtained according to the switching priority setting mode of the neighboring cell.
  • the switch has the highest priority.
  • step 301 can be triggered to receive the measurement report sent by the UE, when the measurement report is in the P2
  • step 302 selects the pico cell indicated by P2 as the target cell, and in step 305, transmits a handover command to the UE to switch to the pico cell indicated by P2.
  • step 301 may further include:
  • the small base station When the UE detects that there is a neighboring cell that is better than the signal of the small cell coverage cell, the small base station receives the measurement report sent by the UE for the neighboring cell.
  • signal quality based handover can be implemented, and when the UE switches to a neighboring cell with better signal quality than the currently served cell, the cell handover is triggered.
  • step 301 may further include:
  • the cell handover may be triggered. Specifically, when the UE detects that the signal quality of the coverage area of the small base station is lower than a preset threshold when the UE is located at the edge of the coverage area of the small base station, the UE actively sends a measurement report to the small base station.
  • step 301 may further include:
  • the small base station When the current load of the small cell coverage cell exceeds a certain threshold, the small base station sends a measurement indication message to the UE, so that the UE performs measurement of the neighbor cell.
  • the small base station receives the measurement report sent by the UE for the neighboring cell.
  • the small base station when the load of the small cell coverage cell exceeds a certain threshold, the small base station actively triggers cell handover.
  • the method may further include:
  • the small base station controls the UE to go to the pico cell covered by the small base station for service.
  • the step may be before step 304, by which the current serving cell of the UE (the cell covered by the small base station in step 301) is the pico cell.
  • step 301 may be triggered to receive the measurement report sent by the UE, and then steps 302 and 303 are performed to implement the UE handover to another cell.
  • the small base station controlling the UE to go to the pico cell covered by the small base station to perform the service may include:
  • the small base station controls the UE to switch to the pico cell covered by the small base station to perform the service;
  • the small base station controls the UE to perform cell reselection, and controls the UE to camp on the cell covered by the small base station for serving.
  • the small base station controls the UE to switch to the pico cell covered by the small base station, and the service includes:
  • the small base station determines the attribute of the service currently connected by the UE. When it is determined that the service currently connected by the UE is a NON-Guarantee Bit Rate (NON-GBR) service, the small base station controls the UE to switch to the pico coverage covered by the small base station.
  • NON-GBR NON-Guarantee Bit Rate
  • the community conducts services.
  • the small base station may not control the UE to perform cell handover, and the UE may continue to perform services in the outdoor cell.
  • FIG. 7 is a schematic diagram of another cell handover method according to an embodiment of the present invention. As shown in FIG. 7, the method includes:
  • the UE sends a measurement report to the small cell to the neighboring cell of the cell covered by the small cell.
  • the cell covered by the small cell may also be understood as the cell currently served by the UE.
  • step 401 can include:
  • the UE When the UE detects that there is a neighboring cell that is better than the signal of the small cell coverage cell, the UE sends a measurement report to the small cell for the neighboring cell of the cell covered by the small cell.
  • step 401 may include:
  • the UE When the UE moves to the edge of the small cell coverage cell and the signal quality of the cell coverage of the small cell is lower than a preset threshold, the UE sends a measurement report to the small cell for the neighbor cell of the cell covered by the small cell.
  • the cell handover may be triggered. Specifically, when the UE detects that the signal quality of the coverage area of the small base station is lower than a preset threshold when the UE is located at the edge of the coverage area of the small base station, the UE actively sends a measurement report to the small base station.
  • step 401 may further include:
  • the UE When the current load of the small cell coverage cell exceeds a certain threshold, the UE receives the small base station to send an indication message for indicating measurement.
  • the UE performs measurement of the foregoing neighboring cell, and sends the measurement report to the small base station.
  • the small base station when the load of the small cell coverage cell exceeds a certain threshold, the small base station actively triggers cell handover.
  • the small base station selects, from the neighboring cells included in the foregoing measurement report, a non-macro cell that satisfies the handover condition, and uses the cell as the target cell of the UE.
  • step 402 may include:
  • the small base station selects, from the neighboring cells included in the measurement report, a cell that meets the handover condition and whose cell type is consistent with the cell type of the cell covered by the small base station, is the target cell of the UE; or the small base station includes from the foregoing measurement report.
  • the neighboring cell selects a cell that meets the handover condition and has the highest handover priority level as the target cell of the UE, where the handover priority level of the neighboring cell is preset.
  • the small base station sends, to the UE, a handover command that is switched to the target cell.
  • the UE sends a measurement report of the neighboring cell to the small base station, and the small base station selects a non-macro cell that satisfies the handover condition from the neighboring cells included in the measurement selection as the UE handover target cell, and the small base station sends a handover to the UE to The handover command of the target cell.
  • the device embodiment of the present invention is used to perform the method implemented by the method embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown. For details not disclosed, please refer to the above method embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a small base station according to an embodiment of the present invention. As shown in FIG. 8, the method includes: a receiving unit 51, a selecting unit 52, and a sending unit 53, where:
  • the receiving unit 51 is configured to receive, by the small base station, a measurement report sent by the UE for a neighboring cell of the cell covered by the small base station;
  • the selecting unit 52 is configured to select, from the neighboring cells included in the measurement report received by the receiving unit 51, a non-macro cell that satisfies the handover condition as the target cell of the UE;
  • the non-macro cell is a cell whose cell coverage is smaller than a macro cell, for example, a cell, a pico cell, or a femto cell.
  • the sending unit 53 is configured to send, to the foregoing UE, a switching command that is switched to the target cell selected by the selecting unit 52;
  • the UE When the UE receives the handover command sent by the sending unit 53, the UE can switch to the target cell.
  • the target cell selected by the selecting unit 52 is a non-macro cell, so that the burden of reducing the base station of the macro cell can be achieved.
  • the UE is currently serving in the pico cell, and when the UE moves to the edge of the pico cell, the trigger receiving unit 51 receives the measurement report sent by the UE, and the When there is a non-macro cell in the neighboring cell corresponding to the measurement report, the selecting unit 52 selects one of the plurality of non-macro cells that satisfy the switching condition to select one non-macro cell as the target cell, so that the UE can switch from the pico cell to another.
  • a non-macro cell can reduce the burden on the macro cell.
  • the embodiment can be applied to HetNet, WCDMA networks, GSM networks, CDMA networks, TDS-CDMA networks, and the like. That is, the above small base station may be a small base station in any of the above HetNet, WCDMA network, GSM network, CDMA network, and TDS-CDM network.
  • the cell covered by the small base station may specifically refer to a cell whose coverage is smaller than a macro cell, for example, a micro cell, a pico cell, and a femto cell. That is, the small base station may include: a base station of a micro cell, a base station of a pico cell, or a base station of a femto cell.
  • FIG. 9 is a schematic structural diagram of another small base station according to an embodiment of the present invention. As shown in FIG. 9, the method includes: a receiving unit 61, a selecting unit 62, and a sending unit 63, where:
  • the receiving unit 61 is configured to receive a measurement report sent by the user equipment for a neighboring cell of the cell covered by the small base station;
  • the selecting unit 62 is configured to select, from the neighboring cells included in the measurement report received by the receiving unit 61, a cell that meets the handover condition and whose cell type is consistent with the cell type of the cell covered by the small cell, is the target cell of the UE.
  • the cell selected by the selecting unit 62 from the neighboring cell is a cell that is consistent with the cell type of the cell covered by the small cell, and the cell covered by the small cell is a non-macro cell, and the selected cell is also selected. It is a non-macro cell.
  • the selected cell is the same as the cell type of the cell covered by the small cell, that is, the cell before the UE switching cell and the cell type of the cell after the handover are the same, so that the UE can complete the cell handover more easily.
  • the cell type information of the foregoing neighboring cell may be pre-acquired.
  • the cell type may refer to a cell type defined by a Long Term Evolution (LTE) protocol, where the cell type may include:
  • Macro cell, cell, pico cell and femto cell Macro cell, cell, pico cell and femto cell.
  • the sending unit 63 is configured to send, to the UE, a handover command that is switched to the target cell.
  • the device may further include:
  • the information acquiring unit 64 is configured to acquire cell type information of the foregoing neighboring cell.
  • the information acquiring unit 64 may be configured to: receive operation information for the neighboring cell that is input by the user, generate cell type information of the neighboring cell according to the operation information, or cell type information of the neighboring cell;
  • the relationship information includes cell type information of the foregoing neighboring cell; or
  • the information acquiring unit 64 may be specifically configured to receive cell type information of the neighboring cell that is sent by the base station of the neighboring cell.
  • the cell type may refer to a cell type defined by the LTE protocol, where
  • the zone type can include:
  • the cell type information of acquiring the neighboring cell by the small base station itself may be implemented.
  • the relationship information of the foregoing neighboring cells may be specifically used in the existing information, or may be preset in the present invention. It is also possible to transmit the cell type information of each of the above cells by the base station of a neighboring cell.
  • the selecting unit 62 may be specifically used to obtain the foregoing measurement report.
  • the cell with the strongest signal in the cell that satisfies the handover condition and whose cell type matches the cell type of the cell covered by the small cell is the target cell of the user equipment.
  • a cell having the strongest selection signal among a plurality of cells satisfying the handover condition and having the cell type and the cell type of the cell covered by the small base station may be used as the target cell.
  • the selecting unit 62 may be specifically configured to select, from the neighboring cells included in the foregoing measurement report, a cell that meets the handover condition and has the highest handover priority level as the target cell of the UE, where the foregoing phase
  • the handover priority level of the neighboring cell is preset.
  • the foregoing switching priority level of the neighboring cells may be set as follows:
  • the higher the handover priority setting of the cell having the higher cell type similarity to the cell covered by the small base station the lower the handover priority level of the cell having the lower similarity to the cell type of the cell covered by the small base station.
  • the handover priority level of the cell in the neighboring cell that matches the cell type of the cell covered by the small cell is set to be the highest, and the handover priority of the macro cell in the neighbor cell is the lowest.
  • the handover priority of the pico cell in the neighbor cell is set to be the highest, and the priority of the micro cell or the femto cell in the neighbor cell is set next to the handover of the pico cell.
  • Priority level setting the handover priority level of the macro cell in the foregoing neighboring cell to be the lowest.
  • the foregoing small base station may further include:
  • the setting unit 65 is configured to set a handover priority level of the neighboring cell according to the cell type information of the neighboring cell according to the information acquiring unit 64.
  • the cell of the neighboring cell that is consistent with the cell type of the cell covered by the small cell The switch has the highest priority.
  • the setting unit 65 may set the switching priority level of the neighboring cell according to the foregoing rules.
  • the foregoing small base station may further include:
  • an identifier adding unit (not shown in the drawing), configured to add a cell type identifier of the neighboring cell to the neighboring cell list according to the cell type information acquired by the information acquiring unit;
  • the setting unit 65 may be specifically configured to set a switching priority level of the neighboring cell according to a cell type identifier added by the identifier adding unit (not shown in the drawing) in the neighboring cell list.
  • the foregoing neighbor cell list may be used in an existing manner, or may be a neighbor cell list preset in the present invention.
  • the target cell is selected more quickly and conveniently in the subsequent target cell selection process.
  • the pico cell and the femto cell mainly act on the indoor cell, and are used to absorb the traffic of the macro cell.
  • the mid-pico cell and the femto cell that identify the neighboring cell are used to absorb the traffic of the macro cell; and the micro-zone is mainly used as an outdoor cell in practical applications, and is used for The capacity of the network is increased.
  • a cell that identifies a micro cell in a neighboring cell to increase network capacity can be implemented.
  • the selecting unit 62 may be specifically configured to select, from the neighboring cells included in the measurement report.
  • the cell with the strongest signal that satisfies the handover condition and has the highest handover priority level is the target cell of the UE.
  • the receiving unit 61 may be specifically configured to: when the UE detects that there is a neighboring cell that is better than the signal of the small cell coverage cell, receive the measurement sent by the UE for the neighboring cell. report.
  • signal quality based handover can be implemented.
  • the cell handover is triggered.
  • the receiving unit 61 may be specifically configured to: when the UE moves to an edge of the small cell coverage cell, and the signal quality of the small cell coverage cell is lower than a preset threshold, receive the UE A measurement report for the neighboring cell described above.
  • the cell handover is triggered. Specifically, when the UE detects that the signal quality of the coverage area of the small base station is lower than a preset threshold when the UE is located at the edge of the coverage area of the small base station, the UE actively sends a measurement report to the small base station.
  • the receiving unit 61 may be specifically configured to: when the current load of the small cell coverage cell exceeds a certain threshold, send a measurement indication message to the UE, so that the UE performs measurement of the neighbor cell; The measurement report for the above neighboring cells.
  • the small cell of the UE actively triggers cell handover.
  • FIG. 11 is a schematic structural diagram of another small base station according to an embodiment of the present invention. As shown in FIG. 11, the method includes: a receiver 71, a processor 72, and a transmitter 73:
  • the receiver 71 is configured to receive a measurement report sent by the UE for a neighboring cell of the cell covered by the small base station;
  • the processor 72 is configured to perform the following operations:
  • the transmitter 73 is configured to send, to the UE, a handover command that is switched to the target cell.
  • the UE may switch to the target cell.
  • the selected target cell is a non-macro cell, so that the burden of reducing the base station of the macro cell can be achieved.
  • the embodiment may be applied to a HetNet, a WCDMA network, a GSM network, a CDMA network, a TDS-CDMA network, etc., that is, the foregoing small base station may be the above HetNet, WCDMA network, GSM network, CDMA network, and A small base station in any network in a TDS-CDM network.
  • the cell covered by the small base station may specifically refer to a cell whose coverage is smaller than a macro cell, for example, a micro cell, a pico cell, and a femto cell. That is, the small base station may include: a base station of a micro cell, a base station of a pico cell, or a base station of a femto cell.
  • the receiver 71 may be a receiving antenna and the transmitter 73 may be a transmitting antenna.
  • the small base station selects a non-macro cell that satisfies the handover condition from the neighboring cells of the small cell coverage cell as the target cell, and the small base station transmits a handover command to the target cell to the UE.
  • the target cell thus selected is a non-macro cell, thereby reducing the burden on the macro cell.
  • FIG. 12 is a schematic structural diagram of another small base station according to an embodiment of the present invention. As shown in FIG. 12, the method includes: a receiver 81, a processor 82, and a transmitter 83:
  • the receiver 81 is configured to receive a measurement report sent by the UE for a neighboring cell of the cell covered by the small base station;
  • the processor 82 is configured to perform the following steps:
  • the transmitter 83 is configured to send, to the foregoing UE, a handover command that is switched to the target cell.
  • the processor 82 selects a cell selected from the neighboring cells as a cell that matches a cell type of the cell covered by the small cell, and the cell covered by the small cell is a non-macro cell, and the selected cell is also selected. It is a non-macro cell.
  • the selected cell is the same as the cell type of the cell covered by the small cell, that is, the cell before the UE switching cell and the cell type of the cell after the handover are the same, so that the UE can complete the cell handover more easily.
  • the cell type information of the foregoing neighboring cell may be pre-acquired.
  • the cell type may refer to the cell type defined by the LTE protocol, where the cell type may include:
  • Macro cell, cell, pico cell and femto cell Macro cell, cell, pico cell and femto cell.
  • the processor 82 selects, from the neighboring cells included in the foregoing measurement report, a cell that meets the handover condition and the cell type is consistent with the cell type of the cell covered by the small base station, and is the UE. Before the operation of the target cell, it is also used to perform the following operations:
  • the operation performed by the processor 82 to obtain the cell type information of the foregoing neighboring cell may include:
  • the above relationship information includes cell type information of the foregoing neighboring cell; or
  • the cell type information of the neighboring cell transmitted by the receiver 81 is obtained.
  • the receiver 81 may be further configured to receive cell type information of the neighboring cell sent by the base station of the neighboring cell.
  • the receiver 81 receives the cell type information of the neighboring cell sent by the base station of the neighboring cell, and the receiver 81 transmits the cell type information to the processor 82.
  • the cell type information of acquiring the neighboring cell by the small base station itself may be implemented.
  • the relationship information of the neighboring cells may be specifically used in the prior art, or may be preset in the present invention. It is also possible to transmit the cell type information of each of the above cells by the base station of a neighboring cell.
  • the processor 82 when there are multiple cells in the neighboring cell that meet the handover condition and the cell type is consistent with the cell type of the cell covered by the small cell, the processor 82 performs the phase included in the measurement report.
  • the operation of selecting the cell that meets the handover condition and the cell type is consistent with the cell type of the cell covered by the small cell is the target cell of the UE, and may include: selecting, from the neighboring cells included in the measurement report, that the cell is selected to be satisfied.
  • the cell with the strongest signal in the cell whose handover condition and the cell type is consistent with the cell type of the cell covered by the small cell is the target cell of the user equipment.
  • a cell having the strongest selection signal among a plurality of cells satisfying the handover condition and having the cell type and the cell type of the cell covered by the small base station may be used as the target cell.
  • processor 82 is specifically configured to perform the following operations:
  • the foregoing switching priority level of the neighboring cells may be set as follows:
  • the higher the handover priority setting of the cell having the higher cell type similarity to the cell covered by the small base station the lower the handover priority level of the cell having the lower similarity to the cell type of the cell covered by the small base station.
  • the handover priority level of the cell in the neighboring cell that matches the cell type of the cell covered by the small cell is set to be the highest, and the handover priority of the macro cell in the neighbor cell is the lowest.
  • the cell covered by the small base station is a pico cell
  • setting the pico cell in the adjacent cell The priority of the handover is the highest, and the priority of the microcell or the femtocell in the neighboring cell is set next to the handover priority of the picocell, and the handover priority of the macrocell in the neighboring cell is set to be the lowest.
  • the processor 82 is configured to perform, before selecting, a cell that meets the handover condition and has the highest handover priority level as the target cell of the UE, in the neighboring cell included in the foregoing measurement report, Do the following:
  • the processor 82 after performing the operation of acquiring the cell type information of the neighboring cell, performs the operation of setting the switching priority level of the neighboring cell according to the cell type information of the neighboring cell after performing the operation of acquiring the cell type information of the neighboring cell. , also used to do the following:
  • the operation performed by the processor 82 to set the switching priority level of the neighboring cell according to the cell type information of the neighboring cell may include:
  • the handover priority level of the neighboring cell is set according to the cell type identifier in the neighbor cell list.
  • the foregoing neighbor cell list may be used in an existing manner, or may be a neighbor cell list preset in the present invention.
  • the target cell is selected more quickly and conveniently in the subsequent target cell selection process.
  • the pico cell and the femto cell mainly act on the indoor cell, and are used for absorbing the traffic of the macro cell.
  • the mid-pico cell and the femto cell that identify the neighboring cell are used to absorb the traffic of the macro cell; and the micro-zone is mainly used as an outdoor cell in practical applications, and is used for The capacity of the network is increased.
  • a cell that identifies a micro cell in a neighboring cell to increase network capacity can be implemented.
  • the processor 82 when there are multiple cells in the neighboring cell that meet the handover condition and the handover priority level is the highest, the processor 82 performs the neighboring small from the foregoing measurement report.
  • the operation of selecting a cell that meets the handover condition and has the highest handover priority level as the target cell of the UE may include:
  • the cell with the strongest signal that satisfies the handover condition and has the highest handover priority level is selected as the target cell of the UE.
  • the foregoing small base station may further include:
  • the memory 84 is configured to store a program executed by the processor 82.
  • the programs or instructions corresponding to the operations performed by the processor 82 in the foregoing embodiment may be stored in the memory 84.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例提供了一种小区切换方法，包括：小基站接收用户设备发送的针对所述小基站所覆盖小区的相邻小区的测量报告；小基站从所述测量报告包含的相邻小区中，选择一个满足切换条件的非宏小区作为所述用户设备的目标小区；小基站向所述用户设备发送切换至所述目标小区的切换命令。相应地，本发明实施例还提供了一种小基站。本发明实施例可以减少宏小区的负担。

Description

一种小区切换方法及设备 技术领域
本发明涉及通信领域， 尤其涉及一种小区切换方法及设备。 背景技术
异构网络（ Heterogeneous Network, HetNet )是面向未来的创新移动宽带网 络架构， 该网络由不同大小和不同类型的小区构成， 如该网络包括 2G、 3G、 4G 网络的小区， 如包括宏小区 （例如： Macro Cell )、 微小区 （例如： Micro Cell )、 微微小区 （例如： Pico Cell )和毫微微小区（例如： Femto Cell )。 HetNet将这些 小区的无线基础设施中的关键部件进行协调部署， 让这些部件协同工作， 以提 高数据吞吐率、 移动能力和用户体验， 完全满足移动宽带用户对 2G、 3G、 4G 网络的性能要求。
在目前的异构网络中， 宏小区和微小区通常作为室外覆盖小区， 微微小区 和毫微微小区通常作为室内覆盖小区， 室内外可以釆用同频组网， 也可以釆用 异频， 但是由于频率资源比较缺乏， 通常釆用同频组网。 对于宏微同频的室内 小区连续覆盖的场景， 当用户设备 ( User Equipment , UE )选择在室内小区进行 服务时， 由于 UE在室内的移动性， 当移动到室内小区的边界时， UE向当前服 务的室内小区的站点上报测量信息，该站点根据 UE上报的测量信息，选择该测 量信息中信号最强的小区作为切换目标小区， 并控制 UE切换至该目标小区。往 往在实际应用中， 上述信号最强的小区为宏小区， 也就是说， UE移动至室内小 区的边界时， UE就会切换至宏小区。 发明内容
本发明实施例提供了一种小区切换方法及设备， 可以减少宏小区的负担。 本发明第一方面提供一种小区切换方法， 包括：
小基站接收用户设备发送的针对所述小基站所覆盖小区的相邻小区的测量 报告；
小基站从所述测量报告包含的相邻小区中， 选择一个满足切换条件的非宏 小区作为所述用户设备的目标小区； 小基站向所述用户设备发送切换至所述目标小区的切换命令。
结合第一方面， 在第一种可能的实现方式中， 所述小基站从所述测量报告 包含的相邻小区中， 选择一个满足切换条件的非宏小区作为所述用户设备的目 标小区包括：
所述小基站从所述测量报告包含的相邻小区中， 选择出满足切换条件且小 区类型与所述小基站所覆盖小区的小区类型一致的小区作为所述用户设备的目 标小区； 或者
所述小基站从所述测量报告包含的相邻小区中， 选择出满足切换条件且切 换优先级别最高的小区作为所述用户设备的目标小区， 其中， 所述相邻小区的 切换优先级别为预先设置的。
结合第一方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所 述小基站从所述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型 与所述小基站所覆盖小区的小区类型一致的小区为所述用户设备的目标小区之 前， 所述方法还包括：
所述小基站获取所述相邻小区的小区类型信息。
结合第一方面的第一种可能的实现方式， 在第三种可能的实现方式中， 所 述小基站从所述测量报告包含的相邻小区中， 选择出满足切换条件且切换优先 级别最高的小区作为所述用户设备的目标小区之前， 所述方法还包括：
所述小基站获取所述相邻小区的小区类型信息；
所述小基站根据所述相邻小区的小区类型信息设置所述相邻小区的切换优 先级别；
其中， 所述相邻小区中与所述小基站所覆盖小区的小区类型一致的小区的 切换优先级别最高。
结合第一方面的第三种可能的实现方式， 在第四种可能的实现方式中， 所 述小基站获取所述相邻小区的小区类型信息之后， 所述小基站根据所述相邻小 区的小区类型信息设置所述相邻小区的优先级别之前， 所述方法还包括：
所述小基站根据所述小区类型信息在相邻小区列表中增加所述相邻小区的 小区类型标识；
所述小基站根据所述相邻小区的小区类型信息设置所述相邻小区的切换优 先级别包括： 所述小基站根据所述相邻小区列表中的小区类型标识设置所述相邻小区的 切换优先级别。
本发明第二方面提供一种小基站， 包括： 接收单元、 选择单元和发送单元， 其中：
所述接收单元， 用于接收用户设备发送的针对所述小基站所覆盖小区的相 邻小区的测量报告；
所述选择单元， 用于根据从所述接收单元接收的测量报告包含的相邻小区 中， 选择一个满足切换条件的非宏小区作为所述用户设备的目标小区；
所述发送单元， 用于向所述用户设备发送切换至所述选择单元选择的目标 小区的切换命令。
结合第二方面， 在第一种可能的实现方式中， 所述选择单元具体用于从所 述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与所述小基站 所覆盖小区的小区类型一致的小区作为所述用户设备的目标小区； 或者
所述选择单元具体用于从所述测量报告包含的相邻小区中， 选择出满足切 换条件且切换优先级别最高的小区作为所述用户设备的目标小区， 其中， 所述 相邻小区的切换优先级别为预先设置的。
结合第二方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所 述小基站还包括：
信息获取单元， 用于获取所述相邻小区的小区类型信息。
结合第二方面的第二种可能的实现方式， 在第三种可能的实现方式中， 所 述小基站还包括：
设置单元， 用于根据所述相邻小区的小区类型信息设置所述相邻小区的切 换优先级别；
其中， 所述相邻小区中与所述小基站所覆盖小区的小区类型一致的小区的 切换优先级别最高。
结合第二方面的第三种可能的实现方式， 在第四种可能的实现方式中， 所 述小基站还包括：
标识增加单元， 用于根据所述信息获取单元获取的小区类型信息在相邻小 区列表中增加所述相邻小区的小区类型标识；
所述设置单元具体用于根据所述标识增加单元在所述相邻小区列表中增加 的小区类型标识设置所述相邻小区的切换优先级别。
本发明第三方面提供一种小基站， 包括： 处理器、 通信接口和存储器： 所述通信接口， 用于接收用户设备发送的消息， 以及向用户设备发送消息； 所述存储器中存储一组程序代码， 且所述处理器用于调用所述存储器中存 储的程序代码， 用于执行以下操作：
接收用户设备发送的针对所述小基站所覆盖小区的相邻小区的测量报告； 从所述测量报告包含的相邻小区中， 选择一个满足切换条件的非宏小区作 为所述用户设备的目标小区；
向所述用户设备发送切换至所述目标小区的切换命令。
结合第三方面， 在第一种可能的实现方式中， 所述处理器执行的从所述测 量报告包含的相邻小区中， 选择一个满足切换条件的非宏小区作为所述用户设 备的目标小区的操作包括：
从所述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与所 述小基站所覆盖小区的小区类型一致的小区作为所述用户设备的目标小区； 或 者
从所述测量报告包含的相邻小区中， 选择出满足切换条件且切换优先级别 最高的小区作为所述用户设备的目标小区， 其中， 所述相邻小区的切换优先级 别为预先设置的。
结合第三方面的第一种可能的实现方式， 在第二种可能的实现方式中， 所 述处理器在执行从所述测量报告包含的相邻小区中， 选择出满足切换条件且小 区类型与所述小基站所覆盖小区的小区类型一致的小区作为所述用户设备的目 标小区之前， 还用于执行如下操作：
获取所述相邻小区的小区类型信息。
结合第三方面的第一种可能的实现方式， 在第三种可能的实现方式中， 所 述处理器在执行从所述测量报告包含的相邻小区中， 选择出满足切换条件且切 换优先级别最高的小区作为所述用户设备的目标小区之前， 还用于执行如下操 作：
获取所述相邻小区的小区类型信息；
根据所述相邻小区的小区类型信息设置所述相邻小区的切换优先级别； 其中， 所述相邻小区中与所述小基站所覆盖小区的小区类型一致的小区的 切换优先级别最高。
结合第三方面的第三种可能的实现方式， 在第四种可能的实现方式中， 所 述处理器在执行获取所述相邻小区的小区类型信息之后， 执行根据所述相邻小 区的小区类型信息设置所述相邻小区的优先级别之前， 还用于执行如下操作： 根据所述小区类型信息在相邻小区列表中增加所述相邻小区的小区类型标 识；
所述处理器执行据所述相邻小区的小区类型信息设置所述相邻小区的优先 级别的操作包括：
根据所述相邻小区列表中的小区类型标识设置所述相邻小区的切换优先级 别。
上述技术方案中， 小基站接收用户设备发送的针对所述小基站所覆盖小区 的相邻小区的测量报告； 小基站从所述测量报告包含的相邻小区中， 选择一个 满足切换条件的非宏小区作为所述用户设备的目标小区； 小基站向所述用户设 备发送切换至所述目标小区的切换命令。 这样选择得到的目标小区就为非宏小 区， 从而实现减少宏小区的负担。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述 中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付 出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。
图 1是本发明实施例提供的一种小区切换方法的流程示意图；
图 2是本发明实施例提供的另一种小区切换方法的流程示意图；
图 3是本发明实施例提供的另一种小区切换方法的流程示意图；
图 4是本发明实施例提供的另一种小区切换方法的流程示意图；
图 5是本发明实施例提供的一种可选的应用场景的示意图；
图 6是本发明实施例提供的一种可选的应用场景的示意图；
图 7是本发明实施例提供的另一种小区切换方法的示意图；
图 8是本发明实施例提供的一种小基站的结构示意图；
图 9是本发明实施例提供的另一种小基站的结构示意图； 图 10是本发明实施例提供的另一种小基站的结构示意图；
图 11是本发明实施例提供的另一种小基站的结构示意图；
图 12是本发明实施例提供的另一种小基站的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅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是本发明实施例提供的一种小区切换方法的流程示意图， 如图 1所示， 包括：
101、 小基站接收 UE发送的针对该小基站所覆盖小区的相邻小区的测量报 告.
102、 小基站从上述测量报告包含的相邻小区中， 选择一个满足切换条件的 非宏小区作为小区为上述 UE的目标小区；
需要说明的是， 上述非宏小区是在小区覆盖范围小于宏小区的小区， 例如： 小区、 微微小区或毫微微小区。
103、 小基站向上述 UE发送切换至上述目标小区的切换命令。
当上述 UE接收到步骤 103发送的切换命令时，该 UE就可以切换至上述目 标小区。 而步骤 102选择的上述目标小区为非宏小区， 这样就可以实现减少宏 小区的基站的负担。
可选的， 若上述小基站所覆盖小区为微微小区时， UE当前在微微小区内进 行服务， 当 UE移动到该微微小区的边缘时， 小基站可以接收 UE发送的测量报 告， 而该测量报告对应的相邻小区中存在非宏小区时， 步骤 102就选择满足切 换条件的非宏小区作为目标小区，这样就可以实现 UE从微微小区切换到另一个 非宏小区， 而不是切换至宏小区， 可以减少宏小区的负担。
作为一种可选的实施方式， 本实施例可以应用于 HetNet、 宽带码分多址 ( Wideband Code Division Multiple Access , WCDMA ) 网络、 全球移动通讯系 统（ Global System of Mobile communication, GSM )网络、码分多址（ Code Division Multiple Access, CDMA )网络和时分同步码分多址（ Time Division Synchronous Code Division Multiple Access, TDS-CDMA )网络等， 即上述小基站可以是上述 HetNet、 WCDMA网络、 GSM网络、 CDMA网络和 TDS-CDM网络中任一网络 中的小基站。
作为一种可选的实施方式， 上述小基站所覆盖小区具体可以是指在覆盖范 围小于宏小区的小区， 例如： 微小区、 微微小区和毫微微小区。 即上述小基站 可以包括： 微小区的基站、 微微小区的基站或毫微微小区的基站。
上述技术方案中， 小基站从该小基站覆盖小区的相邻小区中选择满足切换 条件的非宏小区为目标小区，小基站向上述 UE发送切换至上述目标小区的切换 命令。 这样选择得到的目标小区就为非宏小区， 从而实现减少宏小区的负担。 图 2是本发明实施例提供的另一种小区切换方法的流程示意图， 如图 2所 示， 包括：
201、 小基站接收 UE发送的针对该小基站所覆盖小区的相邻小区的测量报 告.
需要说明的是， 上述小基站所覆盖小区可以理解为上述 UE当前服务小区。
202、 小基站从上述测量报告包含的相邻小区中， 选择出满足切换条件且小 区类型与上述小基站所覆盖小区的小区类型一致的小区为上述 UE的目标小区。
可选的， 步骤 202从上述相邻小区中选择的小区为与上述小基站所覆盖小 区的小区类型一致的小区， 而与上述小基站所覆盖小区为非宏小区， 这样选择 出的小区也为非宏小区。 且选择出的小区与上述小基站所覆盖小区的小区类型 一致， 即 UE切换小区前的小区和切换后的小区的小区类型一致， 这样 UE更加 容易完成小区切换。
作为一种可选的实施方式， 上述相邻小区的小区类型信息可以是预先获取 的。 其中， 上述小区类型具体可以参考长期演进 ( Long Term Evolution, LTE ) 协议定义的小区类型， 其中， 小区类型可以包括：
宏小区、 小区、 微微小区和毫微微小区。
可选的， 该实施方式中， 该方法在步骤 202之前还可以包括：
小基站获取上述相邻小区的小区类型信息；
其中， 获取小区类型信息的方法包含但不限于下如列出的获取方式： 小基站接收用户输入的针对上述相邻小区的操作信息， 根据上述操作信息 生成上述相邻小区的小区类型信息； 或者
小基站根据预先获取的相邻小区的关系信息获取到上述相邻小区的小区类 型信息； 上述关系信息包含上述相邻小区的小区类型信息； 或者
小基站接收上述相邻小区的基站发送的上述相邻小区的小区类型信息。 该实施方式中， 可以实现由小基站本身实现获取上述相邻小区的小区类型 信息。 其中， 上述相邻小区的关系信息具体可以釆用现有的， 还可以是本发明 预先设置的。 还可以实现由一相邻小区的基站发送上述每个小区的小区类型信 息。
203、 小基站向上述 UE发送切换至上述目标小区的切换命令。
作为一种可选的实施方式， 当上述相邻小区中满足切换条件且小区类型与 上述小基站所覆盖小区的小区类型一致的小区存在多个时， 步骤 202具体可以 包括：
小基站从上述测量报告包含的相邻小区中， 选择出满足切换条件且小区类 型与上述小基站所覆盖小区的小区类型一致的小区中的信号最强的小区为上述 用户设备的目标小区。
该实施方式中， 可以实现从多个满足切换条件且小区类型与上述小基站所 覆盖小区的小区类型一致的小区中选择信号最强的小区为目标小区。
可选的， 若上述小基站所覆盖小区为微微小区时， UE当前在微微小区内进 行服务， 当 UE移动到该微微小区的边缘时， 小基站可以接收 UE发送的测量报 告， 而该测量报告对应的相邻小区中存在微微小区时， 步骤 202就选择满足切 换条件的微微小区作为目标小区。 在实际应用中， 微微小区一般作为室内小区， 这样就可以实现 UE在室内小区切换到另一个室内小区， 而不是切换至宏小区， 可以减少宏小区的负担。 另外， 由于微微小区主要作用是在于吸收宏小区的话 务量，这样 UE在微微小区之间进行切换就可以达到提高吸收宏小区的话务量的 效果。
可选的， 若上述小基站所覆盖小区为微小区时， UE当前在微小区内进行服 务， 当 UE移动到该微小区的边缘时， 小基站可以接收 UE发送的测量报告， 而 该测量报告对应的相邻小区中存在微小区时， 步骤 202就选择满足切换条件的 微小区作为目标小区，从而实现 UE不会切换至宏小区，可以减少宏小区的负担。
上述技术方案中， 在上面实施例的基础上， 实现从小基站所覆盖小区的相 邻选择为与小基站所覆盖小区的小区类型一致的小区的为 UE的切换目标小区， 可以实现减少宏小区的负担。 图 3是本发明实施例提供的另一种小区切换方法的流程示意图， 如图 3所 示， 包括：
301、 小基站接收 UE发送的针对该小基站所覆盖小区的相邻小区的测量报 告。
302、 小基站从上述测量报告包含的相邻小区中， 选择出满足切换条件且切 换优先级别最高的小区作为上述 UE的目标小区，其中， 上述相邻小区的切换优 先级别为预先设置的。
作为一种可选的实施方式， 上述预先设置相邻小区的切换优先级别可以按 照下如规则设置：
设置与上述小基站所覆盖小区的小区类型相似度越高的小区的切换优先级 别设置越高， 设置与上述小基站所覆盖小区的小区类型的相似度越低的小区的 切换优先级别越低。 例如， 设置上述相邻小区中与上述小基站所覆盖小区的小 区类型一致的小区的切换优先级别最高， 上述相邻小区中的宏小区的切换优先 级别最低。
若上述小基站所覆盖小区为微微小区， 则设置上述相邻小区中的微微小区 的切换优先级别最高， 设置上述相邻小区中的微小区或毫微微小区的优先级别 仅次于微微小区的切换优先级别， 设置上述相邻小区中的宏小区的切换优先级 别最低。
303、 小基站向上述 UE发送切换至上述目标小区的切换命令。
作为一种可选的实施方式，上述 UE发送测量报告时具体可以是处于连接态 或空闲态（例如： Idle态）。 也就说， 本发明可以在 UE进行业务连接时控制 UE 进行小区切换， 还可以在 UE处于空闲状态时控制 UE进行小区重选。
作为一种可选的实施方式， 如图 4所示， 在步骤 301或 302之前， 所述方 法还可以包括：
304、 小基站获取上述相邻小区的小区类型信息；
305、 小基站根据上述相邻小区的小区类型信息设置上述相邻小区的切换优 先级别； 其中， 上述相邻小区中与上述小基站所覆盖小区的小区类型一致的小 区的切换优先级别最高。
这样， 步骤 302就可以根据步骤 305设置的优先级别从上述相邻小区中选 择切换优先级别最高的小区为 UE切换目标小区。
可选的， 步骤 304可以包括：
小基站接收用户输入的针对上述相邻小区的操作信息， 根据上述操作信息 生成上述相邻小区的小区类型信息； 或者
小基站根据预先获取的相邻小区的关系信息获取到上述相邻小区的小区类 型信息； 上述关系信息包含上述相邻小区的小区类型信息； 或者
小基站接收上述相邻小区的基站发送的上述相邻小区的小区类型信息。 该实施方式中， 可以实现由小基站本身实现获取上述相邻小区的小区类型 信息。 其中， 上述相邻小区的关系信息具体可以釆用现有的， 还可以是本发明 预先设置的。 还可以实现由一相邻小区的基站发送上述每个小区的小区类型信 息。
可选的， 上述小区类型具体可以参考 LTE协议定义的小区类型， 其中， 小 区类型可以包括：
宏小区、 小区、 微微小区和毫微微小区。
可选的， 该实施方式中， 在步骤 304之后， 步骤 305之前， 所述方法还可 以包括：
小基站根据上述小区类型信息在相邻小区列表中增加上述相邻小区的小区 类型标识；
步骤 305可以包括：
小基站根据上述相邻小区列表中的小区类型标识设置上述相邻小区的切换 优先级别。
可选的， 上述相邻小区列表具体可以釆用现有的， 还可以是本发明预先设 置的相邻小区列表。
该实施方式中， 由于在相邻小区列表中增加了相邻小区的小区类型标识， 这样在后续的目标小区选择过程中更加的快捷方便选择出目标小区。 在实际应 用中微微小区和毫微微小区主要作用于室内小区， 用于吸收宏小区的话务量。 这样在本实施方式中， 就可以实现标识相邻小区的中微微小区和毫微微小区为 用于吸收宏小区的话务量的小区； 而微小区在实际应用中主要作用为室外小区， 用于增加网络的容量， 这样在本实施方式中， 就可以实现标识相邻小区中的微 小区为增加网络容量的小区。
作为一种可选的实施方式， 当上述相邻小区中满足切换条件且切换优先级 别最高且的小区存在多个时， 步骤 302具体可以包括：
小基站从上述测量报告包含的相邻小区中， 选择出满足切换条件且切换优 先级别最高的小区的信号最强的小区为上述 UE的目标小区。
该实施方式中， 可以实现从多个切换优先级别最高且满足切换条件的小区 中选择信号最强的小区为目标小区。
作为一种可选的实施方式， 一种网络架构如图 5所示， 其中， Cl、 C2、 C3 和 C4分别表示 4栋大楼， C1P、 C2P、 C3P和 C4P分别表示覆盖 Cl、 C2、 C3 和 C4所示的大楼的微微小区的小基站。 其中， C1P所示的 3个小基站所覆盖的 3个微微小区连续覆盖 C1所示的大楼， C2P所示的 3个小基站所覆盖的 3个微 微小区连续覆盖 C2所示的大楼。 图 5中的 Ml、 M2和 M3分别表示 3个宏小区 的基站， 其中， Ml所示的基站所覆盖的宏小区可以覆盖 C1和 C2所示的大楼， 而 M3所示的基站所覆盖的宏小区可以覆盖 C3和 C4所示的大楼， 也就是说， Cl、 C2、 C3和 C4分别表示 4栋大楼同时被 C1P、 C2P、 C3P和 C4P所示的小 基站所覆盖的微微小区和 Ml和 M3所示的基站所覆盖的宏小区覆盖。
当上述步骤中的小基站为微微小区的小基站时， 如为 C1P所示的 3个小基 站中的小基站 1 , 也就是说， UE当前处于 C1所示的大楼里， 且 UE当前服务小 区 （步骤 301 中的小基站所覆盖小区） 为 C1P所示的 3个小基站中的小基站 1 所覆盖的微微小区。 这样， 在步骤 304中小基站 1就可以获取 C1P所示的另两 个小基站所覆盖的微微小区的小区类型信息，以及获取到 Ml所示的基站所覆盖 的宏小区的小区类型信息。 步骤 305就可以设置 C1P所示的另两个小基站所覆 盖的微微小区的优先级别最高，设置 Ml所示的基站所覆盖的宏小区的优先级别 最低。 再通过步骤 301、 302和 304控制 UE切换至覆盖 C1所示的大楼的微微 小区， 即切换至 C1P所示的小基站所覆盖的微微小区中， 从而不切至宏小区， 以减少宏小区的负担。
作为一种可选的实施方式， 如图 6所示， 图 6中 Pl、 P2和 P3所示的框分 别表示 3个连续覆盖图 6中的大楼的微微小区， Ml表示宏小区的基站， 该宏小 区同样可以覆盖图 6中的大楼， UE当前服务小区（步骤 301中的小基站所覆盖 小区）为 PI所示的微微小区， UE当前所处的位置为图 6中黑框所示的位置。 步骤 304和步骤 305就可以设置 P1所示的微微小区的相邻小区的切换优先级别 , 根据上述相邻小区的切换优先级别设置方式得知，P2所示的微微小区和 P3所示 的微微小区的切换优先级别最高。 当 UE再向右移动时， 就移动至 P1所示的微 微小区边缘， 这时 UE 就可以触发小区切换， 此时就可以触发步骤 301 , 接收 UE发送的测量报告， 当该测量报告中 P2所示的微微小区满足切换条件时， 步 骤 302就选择 P2所示的微微小区作为目标小区， 步骤 305就向 UE发送切换至 P2所示的微微小区的切换命令。
作为一种可选的实施方式， 步骤 301还可以包括：
当上述 UE测量到存在比上述小基站覆盖小区的信号更好的相邻小区时，小 基站接收该 UE发送的针对上述相邻小区的测量报告。
该实施方式中，可以实现基于信号质量的切换， 当 UE切换到有比当前服务 的小区的信号质量更好的相邻小区时， 就触发小区切换。
作为一种可选的实施方式， 步骤 301还可以包括：
当上述 UE移动至上述小基站覆盖小区的边缘，且上述小基站覆盖小区的信 号质量低于预设门限时， 接收该 UE发送的针对上述相邻小区的测量报告。
该实施方式中，可以实现当 UE移动至当前服务小区的边缘，且上述小基站 覆盖小区的信号质量低于预设门限时，触发小区切换。具体可以是当 UE从位于 上述小基站覆盖小区的边缘时， 测量到上述小基站覆盖小区的信号质量低于预 设门限时， UE主动向上述小基站发送测量报告。
作为一种可选的实施方式， 步骤 301还可以包括：
上述小基站覆盖小区的当前负载超过一定门限时，小基站向 UE发送测量的 指示消息， 使 UE进行相邻小区的测量；
小基站接收 UE发送的针对上述相邻小区的测量报告。
该实施方式中， 可以实现当上述小基站覆盖小区的负载超过一定门限时， 上述小基站主动触发小区切换。
作为一种可选的实施方式， 当 UE当前服务小区为室外小区（例如：宏小区） 时， 当 UE移动至室内 （例如： 图 5或图 6所示的大楼内）时， 由于室内被微微 小区覆盖， 在步骤 304之前， 所述方法还可以包括：
小基站控制 UE转至小基站所覆盖的微微小区进行服务。 当然， 该步骤可以是在步骤 304之前， 通过该步骤 UE的当前服务小区（步 骤 301中的小基站所覆盖小区）就为微微小区。 当 UE移动至该微微小区的边缘 时， 就可以触发步骤 301接收 UE发送的测量报告， 再执行步骤 302、 303 , 以 实现 UE切换至另一个小区。
可选的， 该实施方式中， 小基站控制 UE转至该小基站所覆盖的微微小区进 行服务具体可以包括：
当 UE处于连接态时， 小基站控制 UE切换至该小基站所覆盖的微微小区进 行服务； 或者
当 UE处于空闲态 （例如： Idle态） 时， 小基站控制 UE进行小区重选， 控 制该 UE驻留至该小基站所覆盖小区进行服务。
可选的， 该实施方式中， 当 UE处于连接态时， 小基站控制 UE切换至该小 基站所覆盖的微微小区进行服务包括：
小基站判断 UE当前连接的业务的属性， 当判断 UE当前连接的业务为非保 证比特速率（NON-Guarantee Bit Rate, NON-GBR )业务时， 小基站控制 UE切 换至该小基站所覆盖的微微小区进行服务。
可选的， 当判断 UE当前连接的业务为 GBR业务时， 小基站就可以不控制 UE进行小区切换， UE可以继续在室外小区进行服务。
上述技术方案中， 在上面实施例的基础上增加了设置相邻小区的优先级别 的步骤， 可以实现由小基站设置相邻小区的优先级别， 同时， 还可以减少宏基 站的负担。 图 7是本发明实施例提供的另一种小区切换方法的示意图， 如图 7所示， 包括：
401、 UE向小基站发送针对该小基站所覆盖小区的相邻小区的测量报告； 可选的， 上述小基站所覆盖小区也可以理解为 UE当前服务的小区。
可选的， 步骤 401可以包括：
当上述 UE 测量到存在比上述小基站覆盖小区的信号更好的相邻小区时， UE向小基站发送针对该小基站所覆盖小区的相邻小区的测量报告。
该实施方式中，可以实现基于信号质量的切换， 当 UE切换到有上述小基站 覆盖小区的信号质量更好的相邻小区时， 就触发小区切换。 作为一种可选的实施方式， 步骤 401可以包括：
当上述 UE移动至上述小基站覆盖小区的边缘，且上述小基站覆盖小区的信 号质量低于预设门限时， UE向小基站发送针对该小基站所覆盖小区的相邻小区 的测量报告。
该实施方式中，可以实现当 UE移动至当前服务小区的边缘，且上述小基站 覆盖小区的信号质量低于预设门限时，触发小区切换。具体可以是当 UE从位于 上述小基站覆盖小区的边缘时， 测量到上述小基站覆盖小区的信号质量低于预 设门限时， UE主动向上述小基站发送测量报告。
作为一种可选的实施方式， 步骤 401还可以包括：
上述小基站覆盖小区的当前负载超过一定门限时， UE接收小基站发送用于 指示测量的指示消息；
UE进行上述相邻小区的测量， 并向小基站发送该测量报告。
该实施方式中， 可以实现当上述小基站覆盖小区的负载超过一定门限时， 小基站主动触发小区切换。
402、 小基站从上述测量报告包含的相邻小区中， 选择一个满足切换条件的 非宏小区作为小区为上述 UE的目标小区；
可选的， 步骤 402可以包括：
小基站从上述测量报告包含的相邻小区中， 选择出满足切换条件且小区类 型与上述小基站所覆盖小区的小区类型一致的小区为上述 UE的目标小区；或者 小基站从上述测量报告包含的相邻小区中， 选择出满足切换条件且切换优 先级别最高的小区作为上述 UE的目标小区，其中，上述相邻小区的切换优先级 别为预先设置的。
403、 小基站向上述 UE发送切换至上述目标小区的切换命令。
上述技术方案中， UE 向小基站发送相邻小区的测量报告 ， 小基站从测量 选择包含的相邻小区中选择出满足切换条件的非宏小区作为 UE切换目标小区， 小基站向 UE发送切换至上述目标小区的切换命令。这样可以实现减少宏小区的 负担。 下面为本发明装置实施例， 本发明装置实施例用于执行本发明方法实施例 所实现的方法， 为了便于说明， 仅示出了与本发明实施例相关的部分， 具体技 术细节未揭示的， 请参照本发明上述方法实施例。 图 8是本发明实施例提供的一种小基站的结构示意图， 如图 8所示， 包括： 接收单元 51、 选择单元 52和发送单元 53 , 其中：
接收单元 51 , 用于小基站接收 UE发送的针对该小基站所覆盖小区的相邻 小区的测量报告；
选择单元 52 , 用于从接收单元 51接收的测量报告包含的相邻小区中， 选择 一个满足切换条件的非宏小区作为小区为上述 UE的目标小区；
需要说明的是， 上述非宏小区是在小区覆盖范围小于宏小区的小区， 例如： 小区、 微微小区或毫微微小区。
发送单元 53 , 用于向上述 UE发送切换至选择单元 52选择的目标小区的切 换命令；
当上述 UE接收到发送单元 53发送的切换命令时， 该 UE就可以切换至上 述目标小区。 而选择单元 52选择的上述目标小区就为非宏小区， 这样就可以实 现减少宏小区的基站的负担。
可选的， 若上述小基站所覆盖小区为微微小区时， UE当前在微微小区内进 行服务， 当 UE移动到该微微小区的边缘时， 就触发接收单元 51接收 UE发送 的测量报告， 而该测量报告对应的相邻小区中存在非宏小区时， 选择单元 52就 选择满足切换条件的多个非宏小区中选择一个非宏小区作为目标小区， 这样就 可以实现 UE从微微小区切换到另一个非宏小区， 而不是切换至宏小区，可以减 少宏小区的负担。
作为一种可选的实施方式， 本实施例可以应用于 HetNet、 WCDMA网络、 GSM网络、 CDMA网络和 TDS-CDMA网络等。即上述小基站可以是上述 HetNet、 WCDMA网络、 GSM网络、 CDMA网络和 TDS-CDM网络中任一网络中的小基 站。
作为一种可选的实施方式， 上述小基站所覆盖小区具体可以是指在覆盖范 围小于宏小区的小区， 例如： 微小区、 微微小区和毫微微小区。 即上述小基站 可以包括： 微小区的基站、 微微小区的基站或毫微微小区的基站。
上述技术方案中， 小基站从该小基站覆盖小区的相邻小区中选择满足切换 条件的非宏小区为目标小区，小基站向上述 UE发送切换至上述目标小区的切换 命令。 这样选择得到的目标小区就为非宏小区， 从而实现减少宏小区的负担。 图 9是本发明实施例提供的另一种小基站的结构示意图， 如图 9所示， 包 括： 接收单元 61、 选择单元 62和发送单元 63 , 其中：
接收单元 61 , 用于接收用户设备发送的针对上述小基站所覆盖小区的相邻 小区的测量报告；
需要说明的是， 上述小基站所覆盖小区可以理解为上述 UE当前服务小区。 选择单元 62, 用于从接收单元 61接收的测量报告包含的相邻小区中， 选择 出满足切换条件且小区类型与上述小基站所覆盖小区的小区类型一致的小区为 上述 UE的目标小区。
可选的， 选择单元 62从上述相邻小区中选择的小区为与上述小基站所覆盖 小区的小区类型一致的小区， 而与上述小基站所覆盖小区为非宏小区， 这样选 择出的小区也为非宏小区。 且选择出的小区与上述小基站所覆盖小区的小区类 型一致， 即 UE切换小区前的小区和切换后的小区的小区类型一致， 这样 UE更 加容易完成小区切换。
作为一种可选的实施方式， 上述相邻小区的小区类型信息可以是预先获取 的。 其中， 上述小区类型具体可以参考长期演进 ( Long Term Evolution, LTE ) 协议定义的小区类型， 其中， 小区类型可以包括：
宏小区、 小区、 微微小区和毫微微小区。
发送单元 63 , 用于向上述 UE发送切换至上述目标小区的切换命令。
作业一种可选的实施方式， 所述设备还可以包括：
信息获取单元 64, 用于获取上述相邻小区的小区类型信息；
可选的， 信息获取单元 64具体可以用于接收用户输入的针对上述相邻小区 的操作信息， 根据上述操作信息生成上述相邻小区的小区类型信息； 或者 上述相邻小区的小区类型信息； 上述关系信息包含上述相邻小区的小区类型信 息； 或者
信息获取单元 64具体可以用于接收上述相邻小区的基站发送的上述相邻小 区的小区类型信息。
可选的， 上述小区类型具体可以参考 LTE协议定义的小区类型， 其中， 小 区类型可以包括：
宏小区、 微小区、 微微小区和毫微微小区。 该实施方式中， 可以实现由小 基站本身实现获取上述相邻小区的小区类型信息。 其中， 上述相邻小区的关系 信息具体可以釆用现有的， 还可以是本发明预先设置的。 还可以实现由一相邻 小区的基站发送上述每个小区的小区类型信息。
作为一种可选的实施方式， 当上述相邻小区中满足切换条件且小区类型与 上述小基站所覆盖小区的小区类型一致的小区存在多个时， 选择单元 62具体可 以用于从上述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与 上述小基站所覆盖小区的小区类型一致的小区中的信号最强的小区为上述用户 设备的目标小区。
该实施方式中， 可以实现从多个满足切换条件且小区类型与上述小基站所 覆盖小区的小区类型一致的小区中选择信号最强的小区为目标小区。
作为一种可选的实施方式， 选择单元 62具体可以用于从上述测量报告包含 的相邻小区中，选择出满足切换条件且切换优先级别最高的小区作为上述 UE的 目标小区， 其中， 上述相邻小区的切换优先级别为预先设置的。
作为一种可选的实施方式， 上述预先设置相邻小区的切换优先级别可以按 照下如规则设置：
设置与上述小基站所覆盖小区的小区类型相似度越高的小区的切换优先级 别设置越高， 设置与上述小基站所覆盖小区的小区类型的相似度越低的小区的 切换优先级别越低。 例如， 设置上述相邻小区中与上述小基站所覆盖小区的小 区类型一致的小区的切换优先级别最高， 上述相邻小区中的宏小区的切换优先 级别最低。
若上述小基站所覆盖小区为微微小区， 则设置上述相邻小区中的微微小区 的切换优先级别最高， 设置上述相邻小区中的微小区或毫微微小区的优先级别 仅次于微微小区的切换优先级别， 设置上述相邻小区中的宏小区的切换优先级 别最低。
可选的， 该实施方式， 如图 10所示， 上述小基站还可以包括：
设置单元 65 ,用于根据信息获取单元 64获取相邻小区的小区类型信息设置 上述相邻小区的切换优先级别； 其中， 上述相邻小区中与上述小基站所覆盖小 区的小区类型一致的小区的切换优先级别最高。 其中， 设置单元 65可以按照上述规则设置相邻小区的切换优先级别。
可选的， 该实施方式中， 上述小基站还可以包括：
标识增加单元（附图中未画出）， 用于根据所述信息获取单元获取的小区类 型信息在相邻小区列表中增加所述相邻小区的小区类型标识；
设置单元 65具体可以用于根据标识增加单元 (附图中未画出）在所述相邻 小区列表中增加的小区类型标识设置所述相邻小区的切换优先级别。
可选的， 该实施方式中， 上述相邻小区列表具体可以釆用现有的， 还可以 是本发明预先设置的相邻小区列表。
由于在相邻小区列表中增加了相邻小区的小区类型标识， 这样在后续的目 标小区选择过程中更加的快捷方便选择出目标小区。 在实际应用中微微小区和 毫微微小区主要作用于室内小区， 用于吸收宏小区的话务量。 这样在本实施方 式中， 就可以实现标识相邻小区的中微微小区和毫微微小区为用于吸收宏小区 的话务量的小区； 而微小区在实际应用中主要作用为室外小区， 用于增加网络 的容量， 这样在本实施方式中， 就可以实现标识相邻小区中的微小区为增加网 络容量的小区。
可选的， 该实施方式中， 当上述相邻小区中满足切换条件且切换优先级别 最高且的小区存在多个时， 选择单元 62具体可以用于从上述测量报告包含的相 邻小区中， 选择出满足切换条件且切换优先级别最高的小区的信号最强的小区 为上述 UE的目标小区。
该实施方式中， 可以实现从多个切换优先级别最高且满足切换条件的小区 中选择信号最强的小区为目标小区。
作为一种可选的实施方式， 接收单元 61具体可以用于当上述 UE测量到存 在比上述小基站覆盖小区的信号更好的相邻小区时，接收该 UE发送的针对上述 相邻小区的测量报告。
该实施方式中，可以实现基于信号质量的切换， 当 UE切换到有比上述小基 站覆盖小区的信号质量更好的相邻小区时， 就触发小区切换。
作为一种可选的实施方式， 接收单元 61具体可以用于当上述 UE移动至上 述小基站覆盖小区的边缘， 且上述小基站覆盖小区的信号质量低于预设门限时， 接收该 UE发送的针对上述相邻小区的测量报告。
该实施方式中，可以实现当 UE移动至上述小基站覆盖小区的边缘，且上述 小基站覆盖小区的信号质量低于预设门限时， 触发小区切换。 具体可以是当 UE 从位于上述小基站覆盖小区的边缘时， 测量到上述小基站覆盖小区的信号质量 低于预设门限时， UE主动向上述小基站发送测量报告。
作为一种可选的实施方式， 接收单元 61具体可以用于当上述小基站覆盖小 区的当前负载超过一定门限时， 向 UE发送测量的指示消息， 使 UE进行相邻小 区的测量； 以及接收发送的针对上述相邻小区的测量报告。
该实施方式中， 可以实现当上述小基站覆盖小区的超过一定门限时， 由 UE 的上述小基站主动触发小区切换。
上述技术方案中， 在上面实施例的基础上， 增加了多种实现选择非宏小区 的实现方式， 可以减少宏基站的负担。 图 11是本发明实施例提供的另一种小基站的结构示意图， 如图 11 所示， 包括： 接收器 71、 处理器 72和发射器 73:
接收器 71 , 用于接收 UE发送的针对该小基站所覆盖小区的相邻小区的测 量报告；
处理器 72用于执行如下操作：
从上述测量报告包含的相邻小区中， 选择一个满足切换条件的非宏小区作 为小区为上述 UE的目标小区；
发射器 73 , 用于向上述 UE发送切换至上述目标小区的切换命令。
当上述 UE接收到上述切换命令时， 该 UE就可以切换至上述目标小区。 而 选择的上述目标小区为非宏小区， 这样就可以实现减少宏小区的基站的负担。
作为一种可选的实施方式， 本实施例可以应用于 HetNet、 WCDMA网络、 GSM网络、 CDMA网络和 TDS-CDMA网络等，即上述小基站可以是上述 HetNet、 WCDMA网络、 GSM网络、 CDMA网络和 TDS-CDM网络中任一网络中的小基 站。
作为一种可选的实施方式， 上述小基站所覆盖小区具体可以是指在覆盖范 围小于宏小区的小区， 例如： 微小区、 微微小区和毫微微小区。 即上述小基站 可以包括： 微小区的基站、 微微小区的基站或毫微微小区的基站。
作为一种可选的实施方式， 接收器 71可以是接收天线， 发射器 73可以是 发射天线。 上述技术方案中， 小基站从该小基站覆盖小区的相邻小区中选择满足切换 条件的非宏小区为目标小区，小基站向上述 UE发送切换至上述目标小区的切换 命令。 这样选择得到的目标小区就为非宏小区， 从而实现减少宏小区的负担。 图 12是本发明实施例提供的另一种小基站的结构示意图， 如图 12所示， 包括： 接收器 81、 处理器 82和发射器 83:
接收器 81 , 用于接收 UE发送的针对该小基站所覆盖小区的相邻小区的测 量报告；
处理器 82用于执行如下步骤：
从上述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与上 述小基站所覆盖小区的小区类型一致的小区为上述 UE的目标小区；
发射器 83 , 用于向上述 UE发送切换至上述目标小区的切换命令。
可选的， 处理器 82从上述相邻小区中选择的小区为与上述小基站所覆盖小 区的小区类型一致的小区， 而与上述小基站所覆盖小区为非宏小区， 这样选择 出的小区也为非宏小区。 且选择出的小区与上述小基站所覆盖小区的小区类型 一致， 即 UE切换小区前的小区和切换后的小区的小区类型一致， 这样 UE更加 容易完成小区切换。
作为一种可选的实施方式， 上述相邻小区的小区类型信息可以是预先获取 的。 其中， 上述小区类型具体可以参考 LTE协议定义的小区类型， 其中， 小区 类型可以包括：
宏小区、 小区、 微微小区和毫微微小区。
作为一种可选的实施方式， 处理器 82在执行从上述测量报告包含的相邻小 区中， 选择出满足切换条件且小区类型与上述小基站所覆盖小区的小区类型一 致的小区为上述 UE的目标小区的操作之前， 还用于执行如下操作：
获取上述相邻小区的小区类型信息；
可选的， 处理器 82执行的获取上述相邻小区的小区类型信息的操作可以包 括：
接收用户输入的针对上述相邻小区的操作信息， 根据上述操作信息生成上 述相邻小区的小区类型信息； 或者
根据预先获取的相邻小区的关系信息获取到上述相邻小区的小区类型信 息； 上述关系信息包含上述相邻小区的小区类型信息； 或者
获取接收器 81传输的所述相邻小区的小区类型信息； 接收器 81具体还可 以用于接收所述相邻小区的基站发送的所述相邻小区的小区类型信息。
具体可以是， 接收器 81接收上述相邻小区的基站发送的上述相邻小区的小 区类型信息， 接收器 81再将该小区类型信息传输至处理器 82。
该实施方式中， 可以实现由小基站本身实现获取上述相邻小区的小区类型 信息。 其中， 上述相邻小区的关系信息具体可以釆用现有的， 还可以是本发明 预先设置的。 还可以实现由一相邻小区的基站发送上述每个小区的小区类型信 息。
作为一种可选的实施方式， 当上述相邻小区中满足切换条件且小区类型与 上述小基站所覆盖小区的小区类型一致的小区存在多个时， 处理器 82执行从上 述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与上述小基站 所覆盖小区的小区类型一致的小区为上述 UE的目标小区的操作可以包括： 从上述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与上 述小基站所覆盖小区的小区类型一致的小区中的信号最强的小区为上述用户设 备的目标小区。
该实施方式中， 可以实现从多个满足切换条件且小区类型与上述小基站所 覆盖小区的小区类型一致的小区中选择信号最强的小区为目标小区。
在另一个实施例中， 处理器 82具体可以用于执行如下操作：
从上述测量报告包含的相邻小区中， 选择出满足切换条件且切换优先级别 最高的小区作为上述 UE的目标小区， 其中，上述相邻小区的切换优先级别为预 先设置的；
作为一种可选的实施方式， 上述预先设置相邻小区的切换优先级别可以按 照下如规则设置：
设置与上述小基站所覆盖小区的小区类型相似度越高的小区的切换优先级 别设置越高， 设置与上述小基站所覆盖小区的小区类型的相似度越低的小区的 切换优先级别越低。 例如， 设置上述相邻小区中与上述小基站所覆盖小区的小 区类型一致的小区的切换优先级别最高， 上述相邻小区中的宏小区的切换优先 级别最低。
若上述小基站所覆盖小区为微微小区， 则设置上述相邻小区中的微微小区 的切换优先级别最高， 设置上述相邻小区中的微小区或毫微微小区的优先级别 仅次于微微小区的切换优先级别， 设置上述相邻小区中的宏小区的切换优先级 别最低。
作为一种可选的实施方式， 处理器 82在执行从上述测量报告包含的相邻小 区中，选择出满足切换条件且切换优先级别最高的小区作为上述 UE的目标小区 的操作之前， 还用于执行如下操作：
获取上述相邻小区的小区类型信息；
根据上述相邻小区的小区类型信息设置上述相邻小区的切换优先级别； 其 中， 上述相邻小区中与上述小基站所覆盖小区的小区类型一致的小区的切换优 先级别最高。
可选的， 该实施方式中， 处理器 82在执行获取上述相邻小区的小区类型信 息的操作之后， 在执行根据上述相邻小区的小区类型信息设置上述相邻小区的 切换优先级别的操作之前， 还用于执行如下操作：
根据上述小区类型信息在相邻小区列表中增加上述相邻小区的小区类型标 识；
处理器 82执行的根据上述相邻小区的小区类型信息设置上述相邻小区的切 换优先级别的操作可以包括：
根据上述相邻小区列表中的小区类型标识设置上述相邻小区的切换优先级 别。
可选的， 上述相邻小区列表具体可以釆用现有的， 还可以是本发明预先设 置的相邻小区列表。
该实施方式中， 由于在相邻小区列表中增加了相邻小区的小区类型标识， 这样在后续的目标小区选择过程中更加的快捷方便选择出目标小区。 在实际应 用中微微小区和毫微微小区主要作用于室内小区， 用于吸收宏小区的话务量。 这样在本实施方式中， 就可以实现标识相邻小区的中微微小区和毫微微小区为 用于吸收宏小区的话务量的小区； 而微小区在实际应用中主要作用为室外小区， 用于增加网络的容量， 这样在本实施方式中， 就可以实现标识相邻小区中的微 小区为增加网络容量的小区。
作为一种可选的实施方式中， 当上述相邻小区中满足切换条件且切换优先 级别最高且的小区存在多个时， 处理器 82执行的从上述测量报告包含的相邻小 区中，选择出满足切换条件且切换优先级别最高的小区作为上述 UE的目标小区 的操作可以包括：
从上述测量报告包含的相邻小区中， 选择出满足切换条件且切换优先级别 最高的小区的信号最强的小区为上述 UE的目标小区。
该实施方式中， 可以实现从多个切换优先级别最高且满足切换条件的小区 中选择信号最强的小区为目标小区。
作为一种可选的实施实施方式， 上述小基站还可以包括：
存储器 84, 用于存储处理器 82所执行的程序。 前述实施例中处理器 82所 执行的操作所对应的程序或指令， 均可以存储在存储器 84中。
上述技术方案中， 在上面实施例的基础上， 增加了多种实现选择非宏小区 的实现方式， 可以减少宏基站的负担。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程， 是可以通过计算机程序来指令相关的硬件来完成， 所述的程序可存储于一计算 机可读取存储介质中， 该程序在执行时， 可包括如上述各方法的实施例的流程。 其中， 所述的存储介质可为磁碟、 光盘、 只读存储记忆体（Read-Only Memory, ROM )或随机存取存储器（ Random Access Memory, 简称 RAM )等。
以上所揭露的仅为本发明较佳实施例而已， 当然不能以此来限定本发明之 权利范围， 因此依本发明权利要求所作的等同变化， 仍属本发明所涵盖的范围。

Claims

权 利 要 求
1、 一种小区切换方法， 其特征在于， 包括：
小基站接收用户设备发送的针对所述小基站所覆盖小区的相邻小区的测量 报告；
所述小基站从所述测量报告包含的相邻小区中， 选择一个满足切换条件的 非宏小区作为所述用户设备的目标小区；
所述小基站向所述用户设备发送切换至所述目标小区的切换命令。
2、 如权利要求 1所述的方法， 其特征在于， 所述小基站从所述测量报告包 含的相邻小区中， 选择一个满足切换条件的非宏小区作为所述用户设备的目标 小区包括：
所述小基站从所述测量报告包含的相邻小区中， 选择出满足切换条件且小 区类型与所述小基站所覆盖小区的小区类型一致的小区作为所述用户设备的目 标小区； 或者
所述小基站从所述测量报告包含的相邻小区中， 选择出满足切换条件且切 换优先级别最高的小区作为所述用户设备的目标小区， 其中， 所述相邻小区的 切换优先级别为预先设置的。
3、 如权利要求 2所述的方法， 其特征在于， 所述小基站从所述测量报告包 含的相邻小区中， 选择出满足切换条件且小区类型与所述小基站所覆盖小区的 小区类型一致的小区为所述用户设备的目标小区之前， 所述方法还包括：
所述小基站获取所述相邻小区的小区类型信息。
4、 如权利要求 2所述的方法， 其特征在于， 所述小基站从所述测量报告包 含的相邻小区中， 选择出满足切换条件且切换优先级别最高的小区作为所述用 户设备的目标小区之前， 所述方法还包括：
所述小基站获取所述相邻小区的小区类型信息；
所述小基站根据所述相邻小区的小区类型信息设置所述相邻小区的切换优 先级别； 其中， 所述相邻小区中与所述小基站所覆盖小区的小区类型一致的小区的 切换优先级别最高。
5、 如权利要求 4所述的方法， 其特征在于， 所述小基站获取所述相邻小区 的小区类型信息之后， 所述小基站根据所述相邻小区的小区类型信息设置所述 相邻小区的优先级别之前， 所述方法还包括：
所述小基站根据所述小区类型信息在相邻小区列表中增加所述相邻小区的 小区类型标识；
所述小基站根据所述相邻小区的小区类型信息设置所述相邻小区的切换优 先级别包括：
所述小基站根据所述相邻小区列表中的小区类型标识设置所述相邻小区的 切换优先级别。
6、 如权利要求 3-5中任一项所述的方法， 其特征在于， 所述小基站获取所 述相邻小区的小区类型信息包括：
所述小基站接收用户输入的针对所述相邻小区的操作信息， 根据所述操作 信息生成所述相邻小区的小区类型信息； 或者
所述小基站根据预先获取的相邻小区的关系信息获取到所述相邻小区的小 区类型信息； 所述关系信息包含所述相邻小区的小区类型信息； 或者
所述小基站接收所述相邻小区的基站发送的所述相邻小区的小区类型信 息。
7、 如权利要求 1-6中任一项所述的方法， 其特征在于， 所述小基站包括： 微小区的基站、 微微小区的基站或毫微微小区的基站。
8、 一种小基站， 其特征在于， 包括： 接收单元、 选择单元和发送单元， 其 中：
所述接收单元， 用于接收用户设备发送的针对所述小基站所覆盖小区的相 邻小区的测量报告；
所述选择单元， 用于根据从所述接收单元接收的测量报告包含的相邻小区 中， 选择一个满足切换条件的非宏小区作为所述用户设备的目标小区； 所述发送单元， 用于向所述用户设备发送切换至所述选择单元选择的目标 小区的切换命令。
9、 如权利要求 8所述的小基站， 其特征在于， 所述选择单元具体用于从所 述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与所述小基站 所覆盖小区的小区类型一致的小区作为所述用户设备的目标小区； 或者
所述选择单元具体用于从所述测量报告包含的相邻小区中， 选择出满足切 换条件且切换优先级别最高的小区作为所述用户设备的目标小区， 其中， 所述 相邻小区的切换优先级别为预先设置的。
10、 如权利要求 9所述的小基站， 其特征在于， 所述小基站还包括： 信息获取单元， 用于获取所述相邻小区的小区类型信息。
11、 如权利要求 10所述的小基站， 其特征在于， 所述小基站还包括： 设置单元， 用于根据所述相邻小区的小区类型信息设置所述相邻小区的切 换优先级别；
其中， 所述相邻小区中与所述小基站所覆盖小区的小区类型一致的小区的 切换优先级别最高。
12、 如权利要求 11所述的小基站， 其特征在于， 所述小基站还包括： 标识增加单元， 用于根据所述信息获取单元获取的小区类型信息在相邻小 区列表中增加所述相邻小区的小区类型标识；
所述设置单元具体用于根据所述标识增加单元在所述相邻小区列表中增加 的小区类型标识设置所述相邻小区的切换优先级别。
13、 如权利要求 10-12中任一项所述的小基站， 其特征在于， 所述信息获取 单元具体用于接收用户输入的针对所述相邻小区的操作信息， 根据所述操作信 息生成所述相邻小区的小区类型信息； 或者
所述信息获取单元具体用于根据预先获取的相邻小区的关系信息获取到所 述相邻小区的小区类型信息； 或者
所述信息获取单元具体用于接收所述相邻小区的基站发送的所述相邻小区 的小区类型信息。
14、 一种小基站， 其特征在于， 包括： 接收器、 处理器和发射器： 所述接收器， 用于接收用户设备发送的针对所述小基站所覆盖小区的相邻 小区的测量报告；
所述处理器用于执行如下操作：
从所述测量报告包含的相邻小区中， 选择一个满足切换条件的非宏小区作 为所述用户设备的目标小区；
所述发射器， 用于向所述用户设备发送切换至所述目标小区的切换命令。
15、 如权利要求 14所述的小基站， 其特征在于， 所述处理器执行的从所述 测量报告包含的相邻小区中， 选择一个满足切换条件的非宏小区作为所述用户 设备的目标小区的操作包括：
从所述测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与所 述小基站所覆盖小区的小区类型一致的小区作为所述用户设备的目标小区； 或 者
从所述测量报告包含的相邻小区中， 选择出满足切换条件且切换优先级别 最高的小区作为所述用户设备的目标小区， 其中， 所述相邻小区的切换优先级 别为预先设置的。
16、 如权利要求 15所述的小基站， 其特征在于， 所述处理器在执行从所述 测量报告包含的相邻小区中， 选择出满足切换条件且小区类型与所述小基站所 覆盖小区的小区类型一致的小区作为所述用户设备的目标小区之前， 还用于执 行如下操作：
获取所述相邻小区的小区类型信息。
17、 如权利要求 15所述的小基站， 其特征在于， 所述处理器在执行从所述 测量报告包含的相邻小区中， 选择出满足切换条件且切换优先级别最高的小区 作为所述用户设备的目标小区之前， 还用于执行如下操作：
获取所述相邻小区的小区类型信息；
根据所述相邻小区的小区类型信息设置所述相邻小区的切换优先级别； 其中， 所述相邻小区中与所述小基站所覆盖小区的小区类型一致的小区的 切换优先级别最高。
18、 如权利要求 17所述的小基站， 其特征在于， 所述处理器在执行获取所 述相邻小区的小区类型信息之后， 执行根据所述相邻小区的小区类型信息设置 所述相邻小区的优先级别之前， 还用于执行如下操作：
根据所述小区类型信息在相邻小区列表中增加所述相邻小区的小区类型标 识；
所述处理器执行据所述相邻小区的小区类型信息设置所述相邻小区的优先 级别的操作包括：
根据所述相邻小区列表中的小区类型标识设置所述相邻小区的切换优先级 别。
19、 如权利要求 16-18中任一项所述的小基站， 其特征在于， 所述处理器执 行的获取所述相邻小区的小区类型信息的操作包括：
接收用户输入的针对所述相邻小区的操作信息， 根据所述操作信息生成所 述相邻小区的小区类型信息； 或者
根据预先获取的相邻小区的关系信息获取到所述相邻小区的小区类型信 息； 或者
获取所述接收器传输的所述相邻小区的小区类型信息； 所述接收器具体还 用于接收所述相邻小区的基站发送的所述相邻小区的小区类型信息。
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