WO2015003303A1 - 一种小区切换的方法和装置 - Google Patents

一种小区切换的方法和装置 Download PDF

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Publication number
WO2015003303A1
WO2015003303A1 PCT/CN2013/079010 CN2013079010W WO2015003303A1 WO 2015003303 A1 WO2015003303 A1 WO 2015003303A1 CN 2013079010 W CN2013079010 W CN 2013079010W WO 2015003303 A1 WO2015003303 A1 WO 2015003303A1
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WO
WIPO (PCT)
Prior art keywords
cell
base station
target base
target
source
Prior art date
Application number
PCT/CN2013/079010
Other languages
English (en)
French (fr)
Inventor
孙海珊
牛晓莉
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 EP13889021.5A priority Critical patent/EP3021613B1/en
Priority to PCT/CN2013/079010 priority patent/WO2015003303A1/zh
Priority to CN201380000501.3A priority patent/CN103650585B/zh
Publication of WO2015003303A1 publication Critical patent/WO2015003303A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/13Cell handover without a predetermined boundary, e.g. virtual cells
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for cell handover. Background technique
  • Heterogeneous Network is composed of a plurality of cells of different sizes and types, including: a macro cell and a micro cell.
  • the micro-class cell includes: a micro cell, a pico cell, a femto cell, and a remote radio head (RRH) cell.
  • RRH remote radio head
  • the network capacity of the area can be effectively increased, and the micro-class cells are small in scale, their construction costs (Capital Expenditure, Capax) and operating costs (Operating Expense, Opex) ) are relatively low, so heterogeneous networks are valued by many operators and are an important direction for the evolution of wireless networks.
  • the handover from the macro cell to the micro cell indicates that the user equipment (UE) stays in the macro cell and sends a quality of service report to the source node.
  • the source node can report the UE from the current service according to the quality of service report.
  • the macro cell switches to other micro-class cells with better quality of service.
  • the neighbor cell resources and the configurable neighbor cells on the macro cell side are limited, and thus the actually deployed micro-class cells cannot be configured as described.
  • the real neighboring cell of the macro cell can not realize the handover of the macro cell to the micro-class cell that is different from the macro cell.
  • Embodiments of the present invention provide a method and an apparatus for cell handover, which can solve the problem that a cell handover cannot be completed in a case where a macro cell and a micro-class cell are in an inter-frequency network.
  • the first aspect provides a method for cell handover, where the method includes:
  • the source node Determining, by the source node, the pilot cell of the target base station according to the intra-frequency measurement report reported by the UE; the source node switching the UE from the source cell of the source base station to the pilot cell of the target base station, and the target base station Switching the UE from the pilot cell to a real target cell of the target base station;
  • the pilot cell of the target base station is a virtual cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code (PSC); the real target cell of the target base station is A cell that is different from the pilot cell but has the same PSC.
  • PSC primary scrambling code
  • the source cell is a macro cell, and at least one real cell that is different from the source cell exists in the source cell, before the source node determines the pilot cell of the target base station according to the same-frequency measurement report reported by the UE, the method further includes:
  • Determining, by the source node, the pilot cell of the target base station according to the intra-frequency measurement report reported by the UE includes:
  • the source node determines a pilot cell of the target base station from the stored virtual boot zone according to the intra-frequency measurement report reported by the UE.
  • the source node determines, according to the same-frequency measurement report reported by the UE, the target base.
  • the method further includes:
  • the source node Switching to the pilot cell of the target base station includes:
  • the migration request message is sent on a frequency channel different from the working frequency channel of the target base station.
  • the real cell is a real micro-class cell.
  • a second aspect provides a method for cell handover, where the method includes:
  • the target base station receives a migration request message, where the migration request message indicates a pilot cell of the target base station to which the UE is to be handed over from the source cell of the source base station;
  • the target base station switches the UE to the guiding cell according to the migration request message
  • the target base station switches the UE from the pilot cell to a real target cell of the target base station
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • the target base station receives the migration request message on a different frequency channel than its own working frequency channel.
  • the target base station is configured to switch the UE from the pilot cell to a real target cell of the target base station Specifically:
  • the target base station switches the UE from the pilot cell to a real target cell of the target base station by physical channel reconfiguration.
  • the target base station Before the user equipment is switched to the pilot cell, the method further includes: determining whether the pilot cell is in an active state;
  • the switching, by the target base station, the user equipment to the pilot cell according to the migration request message includes:
  • the target base station When the target base station determines that the pilot cell is in an active state, the target base station switches the user equipment to the pilot cell according to the migration request message.
  • the real target cell of the target base station has at least one pilot cell, and determining whether the pilot cell is in Working status includes:
  • the source base station is a macro base station
  • the target base station is a micro base station.
  • a device for cell handover is provided, where the device includes:
  • a determining unit configured to determine a reference of the target base station according to the same-frequency measurement report reported by the UE Pilot cell
  • a switching unit configured to switch the UE from a source cell of a source base station to the pilot cell of the target base station, and enable the apparatus to switch the UE from the pilot cell to a real target of the target base station Community
  • the pilot cell of the target base station is a virtual pilot cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code (PSC); the real target cell of the target base station A real cell that is different from the pilot cell but has the same PSC.
  • PSC primary scrambling code
  • the source cell is a macro cell, and the source cell has at least one real cell that is different from the source cell, where the device Also includes:
  • a storage unit configured to: before determining, according to the intra-frequency measurement report reported by the UE, the pilot cell, storing, by the virtual cell, the virtual cell of the real cell in the source cell;
  • the determining unit is specifically configured to:
  • the pilot cell of the target base station is determined from the stored virtual pilot cells according to the intra-frequency measurement report reported by the UE.
  • the storage unit is further configured to: before the determining unit determines the pilot cell according to the intra-frequency measurement report reported by the UE, storing a correspondence between the virtual neighboring cell of the macro cell and the virtual boot cell;
  • the determining unit is specifically configured to:
  • the pilot cell of the target base station is determined from the stored virtual pilot cell.
  • the switching unit is specifically configured to:
  • the migration request message is sent on a frequency channel different from the working frequency channel of the target base station.
  • a fourth aspect provides a device for cell handover, where the device includes:
  • a receiving unit configured to receive a migration request message, where the migration request message indicates a pilot cell of the device to which the user equipment is to be switched from a source cell of the source base station;
  • a switching unit configured to switch the user equipment to the guiding cell according to the migration request message
  • the switching unit is further configured to switch the user equipment from the guiding cell to a real target cell of the device;
  • the pilot cell of the device is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the device is different from the pilot cell but has the same primary interference.
  • the cell of the code is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the device is different from the pilot cell but has the same primary interference.
  • the receiving unit is specifically configured to:
  • a migration request message is received on a frequency channel different from the operating frequency channel of the device.
  • the switching unit is specifically configured to:
  • the user equipment is handed over from the pilot cell to the real target cell of the device by physical channel reconfiguration.
  • the device further includes:
  • a determining unit configured to: the switching unit, according to the migration request message, the user Before the device is switched to the pilot cell, determining whether the pilot cell is in an active state; the switching unit is specifically configured to:
  • the determining unit determines that the guiding cell is in an active state, according to the migration request message, switching the user equipment to the guiding cell.
  • the real target cell of the device has at least one pilot cell, where the determining unit is specifically configured to:
  • a fifth aspect provides a radio network controller (RNC), where the RNC includes a processor and a switch;
  • RNC radio network controller
  • the processor is configured to determine, according to an intra-frequency measurement report reported by the UE, a pilot cell of the target base station;
  • a switch configured to switch the UE from a source cell of a source base station to the pilot cell of the target base station, and enable the target base station to switch the UE from the pilot cell to a target base station Target cell
  • the pilot cell of the target base station is a virtual pilot cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code (PSC); the real target cell of the target base station A real cell that is different from the pilot cell but has the same PSC.
  • PSC primary scrambling code
  • the source cell is a macro cell, and the source cell has at least one real cell that is different from the source cell, the RNC Also includes:
  • a memory configured to store, before the pilot cell is determined according to the intra-frequency measurement report reported by the UE, each virtual cell of the real cell in the source cell for the virtual cell of the source cell;
  • the processor is specifically configured to:
  • the pilot cell of the target base station is determined from the stored virtual pilot cells according to the intra-frequency measurement report reported by the UE.
  • the storage unit is further configured to: before the determining, by the processor, the pilot cell according to the intra-frequency measurement report reported by the UE, storing a correspondence between the virtual neighboring cell of the macro cell and the virtual boot cell;
  • the processor is specifically configured to:
  • the pilot cell of the target base station is determined from the stored virtual pilot cell.
  • the switch is specifically configured to:
  • the migration request message is sent on a frequency channel different from the working frequency channel of the target base station.
  • a sixth aspect provides a target base station, where the target base station includes:
  • a receiver configured to receive a migration request message, where the migration request message indicates a pilot cell of the target base station to which the user equipment is to be handed over from the source cell of the source base station;
  • a switch configured to switch the user equipment to the pilot cell according to the migration request message, and switch the user equipment from the pilot cell to a real target cell of the target base station;
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • the receiver is specifically configured to:
  • the migration request message is received on a frequency channel different from the target base station operating frequency channel.
  • the switch is specifically configured to:
  • the user equipment is handed over from the pilot cell to the real target cell of the target base station by physical channel reconfiguration.
  • the target base station further includes:
  • a processor configured to determine, before the switching device, the user equipment is switched to the pilot cell according to the migration request message, whether the pilot cell is in an active state; the switch is specifically configured to:
  • the real target cell of the target base station has at least one pilot cell, where the processor is specifically configured to:
  • a seventh aspect provides a method for cell handover, where the method includes:
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • the eighth aspect provides a user equipment, where the user equipment includes:
  • a receiving unit configured to receive a physical channel reconfiguration message sent by the target base station, where the physical channel reconfiguration message is used to indicate a real target cell of the target base station to which the user equipment is to be handed over, and a real target of the target base station a cell is a cell to which the user equipment is to be handed over after the target base station switches the source device from a source cell of the source base station to a pilot cell of the target base station;
  • a sending unit configured to send a physical channel reconfiguration complete message to the target base station; and a switching unit, configured to switch to the real target cell;
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • a ninth aspect a user equipment is provided, where the user equipment includes:
  • a receiver configured to receive a physical channel reconfiguration message sent by the target base station, where the physical channel reconfiguration message is used to indicate a real target cell of the target base station to which the user equipment is to be handed over, and a real target of the target base station a cell is a cell to which the user equipment is to be handed over after the target base station switches the source device from a source cell of the source base station to a pilot cell of the target base station;
  • a transmitter configured to send a physical channel reconfiguration complete message to the target base station, where the switch is configured to switch to the real target cell;
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • the method and device for cell handover provided by the embodiment of the present invention are performed between different frequency cells When the handover is performed, the UE is first switched from the source cell to the pilot cell with the same frequency as the source cell, and then the pilot cell is switched from the pilot cell to the real cell having the same PSC as the pilot cell, because the source cell and the pilot cell The handover between the cells is the same as that of the same-frequency cell, and the pilot cell has the same PSC as the real cell.
  • FIG. 1 is a flowchart of a method for cell handover according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for cell handover according to an embodiment of the present invention
  • FIG. 3B is a schematic diagram of a cell handover method for the application scenario shown in FIG. 3A
  • FIG. 3C is a schematic diagram of a cell handover method for the application scenario shown in FIG. 3A
  • FIG. 5 is a schematic diagram of another application scenario of cell handover according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a cell handover apparatus according to an embodiment of the present invention
  • FIG. 6B is a block diagram of another structure of a device for cell handover according to an embodiment of the present invention
  • FIG. 7B is a structural block diagram of a device for cell handover according to an embodiment of the present invention
  • FIG. 8 is a structural block diagram of a user equipment according to an embodiment of the present invention
  • 9A is a structural block diagram of an RNC according to an embodiment of the present invention
  • FIG. 9B is another structural block diagram of an RNC according to an embodiment of the present invention
  • FIG. 10A is a structural block diagram of a target base station according to an embodiment of the present invention
  • FIG. 10B is a block diagram of another structure of a target base station according to an embodiment of the present invention
  • FIG. 11 is a structural block diagram of a user equipment according to an embodiment of the present invention.
  • WCDMA Wideband Code Division Multiple Access Wireless
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • the user equipment which may be a wireless terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • Wireless terminal can also be called system, subscriber unit (Subscriber Unit), Subscriber Station, Mobile Station, Mobile, Remote Station, Access Point, Remote Terminal, Access Terminal (Access Terminal), User Terminal, User Agent, User Device, or User Equipment.
  • a base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (NodeB) in WCDMA, or may be an evolved base station (NodeB or eNB or eNodeB, evolutional Node B) in LTE, which is not limited in the present invention.
  • the source node and the target node may be a base station controller (BSC, base station controller) in GSM or CDMA, or may be a radio network controller (RNC) in WCDMA, which is not limited in the present invention.
  • BSC base station controller
  • RNC radio network controller
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist separately. B these three situations.
  • the character "/,,” in this article generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a flowchart of a method for cell handover according to an embodiment of the present invention.
  • an embodiment of the present invention provides a method for cell handover, where the method is described based on a source node, where the source node may be an RNC serving a source cell, and the method may include:
  • the source node determines the pilot cell of the target base station according to the intra-frequency measurement report reported by the UE.
  • the source node may be an RNC on the source cell side, and the source cell may be a macro cell of a macro base station.
  • the pilot cell is a virtual cell that has the same frequency as the source cell but has a different PSC, and the pilot cell is a cell to which the UE first switches from the source cell.
  • the pilot cell mentioned in the embodiment of the present invention is set for the macro cell, and is used for the UE to switch from the macro cell to the pilot cell.
  • the source node determines, according to the intra-frequency measurement report reported by the UE, that the pilot cell is performed when the UE meets the cell handover condition.
  • a plurality of micro-class cells may exist under one macro cell.
  • the cell switching condition may be: performing cell switching when the channel quality is lower than a specified threshold, and the present invention does not limit this.
  • the source node may determine, by using the intra-frequency measurement report reported by the UE, the pilot cell to which the UE is to be handed over.
  • the RNC sends measurement control signaling to the UE, where the measurement control signaling indicates the UE Measuring neighboring cells;
  • the measurement control signaling Receiving, by the UE, the measurement control signaling, measuring channel quality of each adjacent cell based on the reference signal and the same-frequency measurement control parameter, forming an intra-frequency measurement report, and reporting the same-frequency measurement of each cell to the RNC;
  • the RNC After receiving the measurement report of each cell, the RNC can learn the channel quality between the UE and each cell according to the measurement reports, and further determine the pilot cell to which the UE wants to handover.
  • the source node switches the UE from a source cell of a source base station to the pilot cell of the target base station, and causes the target base station to switch the UE from the pilot cell to the target base station.
  • Real target cell
  • the pilot cell is a virtual cell that has the same frequency as the source cell but has a different PSC;
  • the real target cell is a real cell that is different from the pilot cell but has the same PSC.
  • the source cell is a cell where the UE is located before the cell handover, and the pilot cell is a cell to be handed over when the cell is switched for the first time.
  • the source cell may be a macro cell, and the real cell may be a real micro-class cell.
  • the source base station and the target base station are adjacent base stations.
  • the source cell of the source base station is one of a plurality of cells of the source base station.
  • the pilot cell and the real target cell are each one of a plurality of cells of the target base station.
  • the pilot cell has the same frequency as the source cell, and the real target cell and the source cell have different frequencies.
  • the guiding cell of the real target cell may be configured in advance.
  • a pilot cell for the macro cell may be pre-configured for the real target cell.
  • a pilot cell may be pre-configured for the real target cell for each of the plurality of inter-frequency macro cells, that is, the real target
  • the cell may have multiple pilot cells, and each of the plurality of inter-frequency macro cells corresponds to one pilot cell of the real target cell.
  • the intra-frequency measurement report of the UE may carry the PSC, the cell synchronization information OFF, and the Tm of the neighboring cell of the UE, at this time, in the source.
  • the method may further include:
  • the source node acquires a cell identifier of the guiding cell according to a PSC query neighboring cell configuration of the neighboring cell of the UE;
  • the source node calculates a system frame number offset value (System Frame Number, SFN-Offset) of the pilot cell and the source cell according to the cell synchronization information OFF and Tm.
  • the source node may: the source node sends a migration request message to the target base station to which the pilot cell belongs to the target base station, where the source node may switch the source cell of the source base station to the target cell of the target base station. Transmitting the UE from the source cell to the pilot cell according to the migration request message, where the migration request message carries a PSC of the pilot cell, a cell identifier of the pilot cell, and the system frame number Offset value.
  • the sending, by the source node, the migration request message to the target base station to which the pilot cell belongs may be that the source node sends a migration request message to the target node via the core network (for example, the HNB GW or RNC), and then the target node sends a migration request message carrying the pilot cell indication information to the target base station.
  • the core network for example, the HNB GW or RNC
  • the migration request message in order to facilitate the target base station to which the pilot cell belongs to receive the migration request message without affecting normal communication, the migration request message may be on a frequency channel different from the working frequency channel of the target base station. send. That is, if the working frequency channel of the target base station to which the pilot cell belongs is the first frequency channel, the migration request message is sent on a second frequency channel different from the first frequency channel.
  • the target base station to which the pilot cell belongs may determine the pilot cell of the target base station according to the migration request message, and switch to the pilot cell.
  • the UE itself has the function of measuring the scrambling code of the neighboring cell, and can compare the service quality of the cell where the UE is located and the quality of the neighboring cell to determine the target cell to be handed over, and scramble the target cell to measure the report.
  • the form is reported to the source node.
  • the measurement report can be a quality inspection report, and the like. Due to the limitation of the UE function, the measurement report only carries the pilot cell scrambling code, and does not include the pilot cell identifier.
  • the source node may switch the UE to be adjacent to the serving macro cell and use the pilot cell scrambling code according to the identifier information of the serving macro cell where the UE is located and the pilot cell scrambling code included in the measurement report. Community.
  • the source cell is a macro cell, and at least one real cell that is different from the source cell exists in the source cell, where the source node is configured according to step 11
  • the method for the cell handover provided by the embodiment of the present invention may further include:
  • the source node determines, according to the intra-frequency measurement report reported by the UE, that the guiding cell may include:
  • the source node is configured from the stored virtual pilot cell according to the intra-frequency measurement report reported by the UE. Determine the boot cell.
  • the method for the cell handover may further include: before the source node determines the pilot cell according to the intra-frequency measurement report reported by the UE, the method further includes:
  • the user needs to pre-configure the pilot cell of the real cell for the source cell, and pre-configure the virtual neighboring cell of the source cell; and establish a correspondence between the virtual neighboring cell and the guiding cell, where One of the virtual neighborhoods corresponds to a plurality of the pilot cells.
  • a type of pilot cell having the same PSC may be configured as a virtual neighbor of a macro cell.
  • the corresponding guiding cell can be determined according to the virtual neighboring cell.
  • the method for cell handover when performing handover between inter-frequency cells, by first switching the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switching from the pilot cell to the A real cell having the same PSC as the pilot cell can solve the problem that the cell handover cannot be realized due to the configurable neighbor cell limitation in the case of the macro cell and the micro-cell cell inter-frequency networking.
  • the embodiment of the present invention further provides a method for cell handover, where the method is described based on a target base station, where the target base station may be a base station of a micro-class cell, that is, a micro-base station.
  • the method includes:
  • the target base station receives the migration request message, where the migration request message is used to indicate the pilot cell of the target base station to which the UE is to be handed over from the source cell of the source base station.
  • the migration request message may carry the PSC of the guiding cell, and the guiding is small. a cell identifier of the area, and a system frame number offset value of the source cell and the pilot cell.
  • the receiving, by the base station, the migration request message may include: the target base station receiving the migration request message on a frequency channel different from the working frequency channel of the target.
  • the base station in the embodiment of the present invention may have a dual frequency channel, one frequency channel is used for normal communication of the serving cell, and the other frequency channel is used for the guiding cell, and may be used to receive the migration request message.
  • the target base station switches the user equipment to the pilot cell according to the migration request message.
  • the migration request message carries a PSC of the pilot cell, a cell identifier of the pilot cell, and a system frame number offset value of the source cell and the pilot cell.
  • the base station can determine the pilot cell to be handed over according to the information carried in the migration request message, and further switch the user equipment to the pilot cell.
  • the target base station switches the UE from the pilot cell to a real target cell of the target base station
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • the base station in step 23 that the base station switches the UE from the pilot cell to the real target cell of the target base station may include:
  • the target base station switches the UE from a pilot cell to a real target cell of the target base station by physical channel reconfiguration.
  • the base station side only involves the modification of the air interface information, which can be completed within the target base station, and does not need to interact with the core network or the home base station gateway or the RNC.
  • the source base station and the target base station are adjacent base stations.
  • the source cell of the source base station is one of a plurality of cells of the source base station.
  • the pilot cell and the real target cell are each one of a plurality of cells of the target base station.
  • the pilot cell and the source cell have the same frequency, the real target cell and the source The cells have different frequencies.
  • the guiding cell of the real target cell may be configured in advance.
  • a pilot cell for the macro cell may be pre-configured for the real target cell.
  • a pilot cell may be pre-configured for the real target cell for each of the plurality of inter-frequency macro cells, that is, the real target
  • the cell may have multiple pilot cells, and each of the plurality of inter-frequency macro cells corresponds to one pilot cell of the real target cell.
  • the method for cell handover provided by the embodiment of the present invention may further include: before the target base station is configured to switch the user equipment to the pilot cell according to the migration request message, the method for cell handover provided by the embodiment of the present invention may further include:
  • the target base station in step 22, according to the migration request message, that the user equipment is switched to the pilot cell includes:
  • the target base station when determining that the pilot cell is in an active state, switches the user equipment to the pilot cell according to the migration request message.
  • the UE if it is determined that the pilot cell is not in the working state, waiting for the UE to switch from the source cell with the source base station to the pilot cell of the target base station when the pilot cell is in the working state .
  • the real target cell has at least one virtual boot cell, and determining whether the boot cell is in an active state may include:
  • the working sequence and working time of each virtual boot cell in the embodiment of the present invention may be pre-configured by the user on the target base station.
  • the method for cell handover provided by the embodiment of the present invention when performing handover between inter-frequency cells, by first switching the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switching from the pilot cell to the A real target cell having the same PSC as the pilot cell can solve the problem that the cell handover cannot be realized due to the configurable neighbor cell limitation in the case of the macro cell and the micro-class cell inter-frequency networking.
  • the embodiment of the present invention further provides a method for cell handover.
  • the method includes:
  • the user equipment receives the physical channel reconfiguration message sent by the target base station, where the physical channel reconfiguration message is used to indicate the real target cell of the target base station to which the user equipment is to be handed over, and the real target cell of the target base station. a cell to which the user equipment is to be handed over after the target base station switches the source device from the source cell of the source base station to the pilot cell of the target base station;
  • the user equipment sends a physical channel reconfiguration complete message to the target base station, and switches to the real target cell.
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • the user equipment After receiving the physical channel reconfiguration message, the user equipment performs physical channel reconfiguration, and after the configuration is completed, sends a physical channel reconfiguration complete message to the target base station, and finally switches to the real target cell of the target base station.
  • the method for cell handover provided by the embodiment of the present invention when performing handover between inter-frequency cells, by first switching the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switching from the pilot cell to the A real target cell having the same PSC as the pilot cell can solve the problem that the cell handover cannot be realized due to the configurable neighbor cell limitation in the case of the macro cell and the micro-class cell inter-frequency networking.
  • the method for cell handover provided by the embodiment of the present invention includes a cell.
  • the RNC receives the configuration information input by the user, and the specific content of the configuration information may be: configuring the switching policy of the guiding cell to be an Iu interface hard handover or an Iur interface hard handover; configuring the UE's intra-frequency measurement control parameters, so that The UE intra-frequency measurement report carries synchronization information of the source cell and the pilot cell.
  • the home base station After the home base station is powered on, the home base station sends an Iuh registration request message to the home base station gateway, where the Iuh registration request message carries the information of the working cell, and also carries the frequency of the pilot cell, the PSC, and the cell identifier of the same-frequency macro neighboring area. And the system frame number (SFN) offset value between the working cell and other micro-class cells.
  • SFN system frame number
  • the home base station gateway stores the information of the pilot cell as information of the independent cell and stores it in the SFN offset value information table.
  • the home base station gateway sends an Iuh registration response to the home base station, confirming that the registration is successful.
  • the cell handover method provided by the embodiment of the present invention is applicable to both the Iuh architecture and the Iub architecture.
  • the network architecture is the same as that of the macro base station, and the micro base station communicates with the RNC through the Iub interface, and the RNC performs radio resource allocation and management.
  • the configuration phase before the cell handover includes only (1) above.
  • the configuration phase before the cell handover includes (1) ⁇ (4) above.
  • the cell handover phase is as follows:
  • the RNC sends measurement control signaling to the UE, where the measurement control signaling indicates that the UE performs measurement on a neighboring cell;
  • the RNC After receiving the measurement report of each cell, the RNC can learn the channel quality between the UE and each cell according to the measurement reports.
  • the RNC determines that the intra-frequency hard handover condition is met, it determines that the cell that the UE needs to handover is a pilot cell, and sends a Relocation Required message to the core network.
  • the request migration message carries a cell ID (Cell ID) of the source cell where the UE is located, and a measurement report of the source cell and the pilot cell.
  • the core network receives the request migration message, and sends a migration request message (Relocation Request) to the target node, and requires the target node to prepare for migration (that is, prepare required resources).
  • Relocation Request migration request message
  • the target node may be a target RNC or a home base station gateway (HNB GW).
  • the target node is the target RNC, and the migration message is forwarded to the target RNC.
  • the target node is the target RNC, and the migration message is required to be forwarded to the home base station gateway (HNB GW).
  • the target RNC or the home base station gateway parses the migration request message, acquires a cell ID (Cell ID) of the source cell where the UE is located, and guides the cell
  • Cell ID a cell ID of the source cell where the UE is located
  • the PSC and the synchronization information of the source cell and the pilot cell are finally addressed to find the pilot cell of the real target cell, and send a migration request message to the target base station to which the pilot cell belongs, where the migration request message indicates that the user equipment is from the source base station.
  • the pilot cell of the real target cell of the target base station to be switched to by the source cell;
  • the target base station After receiving the migration request message sent by the target RNC or the home base station gateway, the target base station parses the migration request message, acquires a pilot cell of the target target base station, and obtains the UE from the target cell The source cell switches to the pilot cell;
  • the target base station sends a physical channel reconfiguration (Physical Channel Reconfiguration) message to the UE, where the physical channel reconfiguration message carries a cell identifier of a real target cell; the UE receives the physical channel reconfiguration message, to the The base station where the real target cell is located sends a Physical Channel Reconfiguration Complete (Physical Channel Reconfiguration Complete) message.
  • the base station where the real target cell is located switches the UE from the pilot cell to the real target cell.
  • the UE performs handover from the macro cell to the micro cell in the heterogeneous network of the macro cell and the inter-frequency micro-class cell.
  • FIG. 3A is a schematic diagram of a cell handover scenario according to an embodiment of the present invention.
  • Reference map 3A this embodiment is directed to a macro-cell heterogeneous network composed of one macro cell and one micro-class cell (real cell 1) under the macro cell.
  • a pilot cell is established in advance for the real cell 1.
  • the macro cell uses the frequency point F1 and the micro cell uses the frequency point F2 for networking.
  • the method for cell handover provided by this embodiment includes a configuration phase and a cell handover phase between the following cell handovers.
  • the configuration phase process between cell handovers is as follows:
  • pilot cell configures the pilot cell as the same-frequency virtual neighboring cell of the macro cell; and configure the handover policy to the boot cell as the Iu interface hard handover or the Iur interface hard handover;
  • the micro-cell-side base station can use the traditional lub architecture or the 3GPP standard luh architecture, and correspondingly, the RNC can communicate with the micro-class cell side base station corresponding to the lub architecture, corresponding to the luh architecture by the HNB.
  • the GW communicates with the base station side base station of the micro class.
  • Cell handover phase When the UE initiates the handover of the cell to the micro-base station from the macro cell, the macro RNC and the target RNC perform the handover process of the same-frequency Iu interface relocation, and complete the determination of the target cell of the unique target micro-class base station. And switching; The target micro-class base station performs another physical channel reconfiguration on the UE, and switches the UE to the real inter-frequency cell 1. This handover only involves the modification of the air interface information, which can be completed inside the base station, and does not need to interact with the RNC and the core network.
  • the HNB sends an Iuh registration request message to the HNB GW, where the Iuh registration request message carries the PSC of the guiding cell, the real cell identifier, and the cell identifier of each intra-frequency macro neighboring area, in addition to the HNB's own working cell information. And the system frame number offset value of the guiding cell, the HNB GW saves the information of the guiding cell as information of the independent cell to the system frame number offset value information table;
  • the macro RNC and the HNB GW perform the handover process of the intra-frequency Iu interface relocation, and complete the determination and handover of the unique target HNB pilot cell;
  • the target HNB performs another physical channel reconfiguration on the UE, and switches the UE to the real inter-frequency cell 1. This switch only involves the modification of the air interface information, which can be completed inside the HNB, and does not need to interact with the HNB GW and the core network.
  • the specific switching process can be referred to FIG. 3C and the foregoing description, and details are not described herein again.
  • FIG. 4 is a schematic diagram of a cell handover scenario according to an embodiment of the present invention. Referring to FIG. 2A, this embodiment is directed to a macro-heterogeneous network composed of two macro cells and one micro-class cell (real cell 1). Among them, two macro cells use frequency points F1 and F2, respectively.
  • the micro-class cell is located under one of the macro cells (in the embodiment, specifically under the macro cell F2), and shares the frequency point F2 of the macro cell.
  • a pilot cell for the macro cell F1 is established in advance for the real cell 1.
  • the configuration phase process between cell handovers in this embodiment is as follows:
  • the pilot cell On the macro cell F1 side, according to the PSC and the virtual cell identifier of the pilot cell, configure the pilot cell to be the same-frequency virtual neighboring cell of the macro cell F1; and configure the real according to the PSC and the virtual cell identifier of the real cell 1 on the F2 side of the macro cell.
  • the cell 1 is a co-frequency virtual neighboring cell of the macro cell F2; on the macro RNC side, the switching policy to the guiding cell is configured as an Iu interface hard handover or an Iur interface hard handover;
  • the INB registration request message is sent to the HNB GW, and the PNB, the real cell identifier, the intra-frequency macro neighbor cell identifier, and the system frame number offset value of the pilot cell are reported to the HNB GW.
  • the HNB GW When the UE initiates the handover from the macro cell F1, the HNB GW performs the target cell determination according to the same-frequency Iu interface system frame number offset value (SFN-offset) scheme, and sends a handover message to the pilot cell, and the UE first switches to the real cell 1
  • the pilot cell performs a physical channel reconfiguration by the air interface of the base station, and switches the UE to the real inter-frequency real cell 1. This switch only involves empty
  • the modification of the port information can be completed internally by the HNB, and does not need to interact with the HNB GW and the core network.
  • the UE initiates a handover from the macro cell F2 it may be performed according to a normal intra-frequency handover procedure. Case 2:
  • the RNC When the UE initiates the handover from the macro cell F1, the RNC performs the target cell determination according to the same-frequency Iu interface system frame number offset value (SFN-offset) scheme, and sends a handover message to the pilot cell, and the UE first switches to the real cell 1.
  • the cell is guided, and then the physical channel reconfiguration is performed by the air interface of the base station, and the UE is switched to the real inter-frequency real cell 1.
  • This handover involves only the modification of the air interface information, which can be done inside the base station without interaction with the RNC and the core network.
  • FIG. 5 is a schematic diagram of a cell handover scenario according to an embodiment of the present invention. Referring to FIG.
  • this embodiment is directed to a macro-heterogeneous network composed of three macro cells and one micro-class cell (real cell 1). Among them, the three macro cells use frequency points F1, F2 and F3 respectively.
  • the micro-class cell is located under one of the macro cells (in the embodiment, specifically under the macro cell F3), and shares the frequency point F3 of the macro cell.
  • two pilot cells are established for the real cell 1: one pilot cell is for the macro cell F1 and the other pilot cell is for the macro cell F2.
  • the configuration phase process between cell handovers in this embodiment is as follows:
  • the pilot cell 1 is configured as the same-frequency virtual neighboring cell of the macro cell F1; and the PSC and the virtual cell identifier of the cell 2 are guided according to the pilot cell 2 on the macro cell F2 side.
  • the pilot cell 2 is configured as a co-frequency virtual neighboring cell of the macro cell F2;
  • the real cell 1 is configured as a co-frequency virtual neighboring cell of the macro cell F3 according to the PSC and the virtual cell identity of the real cell 1 on the macro cell F3 side;
  • the switching policy for the guiding cell is configured as an Iu interface hard handover or an Iur interface hard handover;
  • the method for cell handover provided by this embodiment includes: Case 1:
  • the INB registration request message is sent to the HNB GW, and the HNB GW reports the PSC of the pilot cell, the real cell identifier, the cell identifier of each intra-frequency macro neighbor, and the system frame number offset value of the pilot cell;
  • the HNB GW performs the target cell determination according to the same-frequency Iu interface system frame number offset value (SFN-offset) scheme, and
  • SFN-offset system frame number offset value
  • the HNB GW performs the target cell determination according to the same-frequency Iu interface system frame number offset value (SFN-offset) scheme, and sends a handover message to the base station corresponding to the real cell 1, and the UE first switches to the pilot cell 2, and then the UE The physical channel reconfiguration is performed on the air interface of the base station, and the UE is switched to the real inter-frequency real cell 1.
  • SFN-offset system frame number offset value
  • the RNC When the UE initiates the handover from the macro cell F1, if the pilot cell 1 of the real cell 1 is in the working state at this time, the RNC performs the target cell determination according to the same-frequency Iu interface system frame number offset value (SFN-offset) scheme. And transmitting a handover message to the base station corresponding to the real cell 1, the UE first switches to the pilot cell 1, and then performs physical channel reconfiguration by the air interface of the base station, and switches the UE to the real inter-frequency real cell 1.
  • SFN-offset system frame number offset value
  • the RNC performs target cell determination according to the same-frequency Iu interface system frame number offset value (SFN-offset) scheme, and sends a handover message to the base station corresponding to the real cell 1, and the UE first switches to the pilot cell 2, and then the UE The physical channel reconfiguration is performed on the air interface of the base station, and the UE is switched to the real inter-frequency real cell 1.
  • SFN-offset system frame number offset value
  • the UE When the UE initiates a handover from the macro cell F3, it may be performed according to a normal intra-frequency handover procedure.
  • the method for cell handover provided by the embodiment of the present invention when performing handover between inter-frequency cells, by first switching the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switching from the pilot cell to the A real cell having the same PSC as the pilot cell can solve the problem that the cell handover cannot be realized due to the configurable neighbor cell limitation in the case of the macro cell and the micro-cell cell inter-frequency networking.
  • the pilot cell can only work in the same frequency as one macro network. At this time, if the UE switches from the macro network of other frequency points to the real cell 1, the call may occur. . Therefore, the rotation time and proportion of the radio channel working in each guiding cell can be adjusted through the service and the situation of the existing network macro network to reduce the impact of switching dropped calls on the key performance indicators of the network.
  • the macro network uses three frequency points. It should be noted that the present invention is equally applicable to the case where the macro network uses three or more frequency points.
  • n(n > 3) frequency points Fl, F2...Fn
  • a separate pair of radio frequency transceiver channels are used to establish a different frequency of interference with the Fl ... Fn- ⁇ macro cell. Community. Since a pair of radio frequency transceiver channels can only work in the state of one pilot cell at the same time, the radio frequency transceiver channel needs to switch between the states of the pilot cell 1 and the pilot cell n-1.
  • the pilot cell 1 is set up, the frequency of the pilot cell 1 is configured to be the same as the frequency of the macro cell F1, and the PSC uses the same PSC as the real cell 1; after working for a period of time, the reconstructed pilot cell is the pilot cell 2, and the pilot cell 2 is adjusted.
  • the frequency is the same as the frequency of the macro cell F2, and the PSC still uses the same PSC as the real cell 1.
  • the reconstructed pilot cell is the pilot cell 3, and the frequency of the pilot cell 3 is adjusted to be the same as the frequency of the macro cell F3, and the PSC is still used.
  • the macro-to-micro-cell inter-frequency handover method according to the present invention has the following advantages:
  • the handover process can be completed within the base station without interaction with the HNB GW/RNC and the core network;
  • the technology does not need to modify existing standard processes and cells, and can be used in conjunction with third-party RNCs;
  • the cell rotation work mode does not require multiple sets of radio frequency transceiver channels to establish the guiding cell respectively, which can effectively reduce the application cost.
  • FIG. 6 is a structural block diagram of an apparatus for cell handover according to an embodiment of the present invention.
  • the apparatus 60 for cell handover provided by the embodiment of the present invention includes a determining unit 61 and a switching unit 62. among them,
  • a determining unit 61 configured to determine, according to the intra-frequency measurement report reported by the UE, a pilot cell of the target base station;
  • the switching unit 62 is configured to switch the UE from a source cell of the source base station to the pilot cell of the target base station, and enable the target base station to switch the UE from the pilot cell to the target base station.
  • the pilot cell of the target base station is a virtual pilot cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code (PSC); the real target cell of the target base station A real cell that is different from the pilot cell but has the same PSC.
  • PSC primary scrambling code
  • the device for cell handover when performing handover between inter-frequency cells, first switches the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switches from the pilot cell to A real cell having the same PSC as the pilot cell, since the handover between the source cell and the pilot cell is a handover between intra-frequency cells, and the pilot cell has the same PSC as the real cell, thereby being able to solve the macro cell and the micro cell.
  • the problem that cell handover cannot be achieved due to the configurable neighbor cell restriction.
  • the source cell is a macro cell, and the source cell has at least one real cell that is different from the source cell, and the device 60 may further include:
  • the storage unit 63 is configured to: before the determining unit 61 determines, according to the intra-frequency measurement report reported by the UE, the virtual pilot cell for each source cell under the source cell for the source cell;
  • the determining unit 61 may be specifically configured to:
  • the pilot cell is determined from the stored virtual pilot cells according to the intra-frequency measurement report reported by the UE.
  • the storage unit 63 is further configured to: before the determining unit 61 determines the pilot cell according to the intra-frequency measurement report reported by the UE, storing a correspondence between the virtual neighboring cell of the macro cell and the virtual boot cell;
  • the determining unit 61 can be specifically configured to:
  • the pilot cell is determined from the stored virtual pilot cell.
  • the switching unit 62 may be specifically configured to:
  • the migration request message is sent on a frequency channel different from the working frequency channel of the target base station.
  • FIG. 7 is a structural block diagram of an apparatus for cell handover according to an embodiment of the present invention.
  • the apparatus 70 for cell handover provided by the embodiment of the present invention includes a receiving unit 71 and a switching unit 72. among them:
  • the receiving unit 71 is configured to receive a migration request message, where the migration request message is used to indicate, by the user equipment, a pilot cell of the device to which the source cell of the source base station is to be handed over;
  • the switching unit 72 is configured to switch the user equipment to the guiding cell according to the migration request message received by the receiving unit 71.
  • the switching unit 72 is further configured to switch the user equipment from the guiding cell to a real target cell of the device;
  • the pilot cell of the device is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the device is different from the pilot cell but A cell with the same primary scrambling code.
  • the source cell of the source base station is one of a plurality of cells of the source base station.
  • the pilot cell and the real target cell are each one of a plurality of cells of the device.
  • the pilot cell has the same frequency as the source cell, and the real target cell and the source cell have different frequencies.
  • the device for cell handover when performing handover between inter-frequency cells, first switches the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switches from the pilot cell to A real cell having the same PSC as the pilot cell, since the handover between the source cell and the pilot cell is a handover between intra-frequency cells, and the pilot cell has the same PSC as the real cell, thereby being able to solve the macro cell and the micro cell.
  • the problem that cell handover cannot be achieved due to the configurable neighbor cell restriction.
  • the receiving unit 71 may be specifically configured to:
  • a migration request message is received on a different frequency channel than the operating frequency channel of the device.
  • the switching unit 72 may be specifically used to:
  • the user equipment is handed over from the pilot cell to the real target cell of the device by physical channel reconfiguration.
  • the apparatus may further include: a determining unit 73, configured to switch, by the switching unit 72, the user equipment to the Before guiding the cell, determining whether the guiding cell is in a working state;
  • the switching unit 72 is specifically configured to:
  • the determining unit 73 determines that the guiding cell is in an active state, the user equipment is handed over to the guiding cell according to the migration request message.
  • the real target cell of the device has at least one pilot cell
  • the determining unit 73 is specifically configured to: Determining whether the guiding cell is in an active state according to a preset working sequence and working time of each guiding cell of the real target cell.
  • the source base station is a macro base station
  • the source cell is a macro cell
  • the device is a micro base station
  • the real cell is a real micro-class cell.
  • FIG. 8 is a structural block diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 80 provided by the embodiment of the present invention includes a receiving unit 81, a sending unit 82, and a switching unit 83. among them:
  • the user equipment 80 includes:
  • the receiving unit 81 is configured to receive a physical channel reconfiguration message sent by the target base station, where the physical channel reconfiguration message is used to indicate a real target cell of the target base station to which the user equipment is to be handed over, and the reality of the target base station
  • the target cell is a cell to which the user equipment is to be handed over after the target base station switches the source device from the source cell of the source base station to the pilot cell of the target base station;
  • the sending unit 82 is configured to send a physical channel reconfiguration complete message to the target base station, and the switching unit 83 is configured to switch to the real target cell.
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • FIG. 9A is a structural block diagram of an RNC according to an embodiment of the present invention.
  • the RNC 90 provided by the embodiment of the present invention includes a processor 91 and a switch 92. among them;
  • the processor 91 is configured to determine, according to an intra-frequency measurement report reported by the UE, a pilot cell of the target base station;
  • a switch 92 configured to switch the UE from a source cell of a source base station to the pilot cell of the target base station, and enable the target base station to switch the UE from the pilot cell to the target base station Real target cell;
  • the pilot cell of the target base station is a virtual pilot cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code (PSC); the real target cell of the target base station A real cell that is different from the pilot cell but has the same PSC.
  • PSC primary scrambling code
  • the RNC when performing handover between different frequency cells, first switches the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switches from the pilot cell to the The pilot cell has a real cell with the same PSC. Since the handover between the source cell and the pilot cell is a handover between the same frequency cell, and the pilot cell has the same PSC as the real cell, the macro cell and the micro cell can be resolved. In the case of a frequency network, the problem that cell handover cannot be achieved due to the configurable neighboring cell restriction.
  • FIG. 9B is another structural block diagram of an RNC according to an embodiment of the present invention.
  • the source cell is a macro cell, and the source cell has at least one real cell that is different from the source cell, and the RNC 90 further includes:
  • the memory 93 is configured to: before the determining, by the processor 91, the pilot cell, the virtual pilot cell for each source cell in the source cell for the source cell;
  • the processor 91 is specifically configured to:
  • the pilot cell is determined from the stored virtual pilot cells according to the intra-frequency measurement report reported by the UE.
  • the memory 93 is further configured to: before the determining, by the processor, the pilot cell according to the intra-frequency measurement report reported by the UE, storing the virtual neighboring cell of the macro cell and the virtual boot cell Correspondence relationship
  • the processor 91 is specifically configured to:
  • the pilot cell is determined from the stored virtual pilot cell.
  • the switch 92 may be specifically configured to:
  • the migration request message is sent on a frequency channel different from the working frequency channel of the target base station.
  • the source base station is a macro base station
  • the source cell is a macro cell
  • the target base station is a micro base station
  • the real cell is a real micro-class cell.
  • the embodiment of the present invention further provides a target base station.
  • a target base station 100 provided by an embodiment of the present invention includes a receiver 101 and a switcher 102. among them;
  • the receiver 101 is configured to receive a migration request message, where the migration request message indicates, by the UE, a pilot cell of the target base station to which the source cell of the source base station is to be handed over;
  • the switch 102 is configured to switch the user equipment to the pilot cell according to the migration request message received by the receiver 101, and switch the user equipment from the pilot cell to the target base station.
  • Real target cell
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • the source base station and the target base station are adjacent base stations.
  • the source cell of the source base station is one of a plurality of cells of the source base station.
  • the pilot cell and the real target cell are each one of a plurality of cells of the target base station Community.
  • the pilot cell has the same frequency as the source cell, and the real target cell and the source cell have different frequencies.
  • the target base station when performing handover between the inter-frequency cells, first switches the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switches from the pilot cell to the location.
  • the pilot cell has a real cell with the same PSC. Since the handover between the source cell and the pilot cell is a handover between intra-frequency cells, and the pilot cell has the same PSC as the real cell, the macro cell and the micro-cell can be solved. In the case of a different-frequency networking, the problem that cell handover cannot be achieved due to the configurable neighboring cell restriction.
  • the receiver 101 is specifically configured to:
  • the migration request message is received on a frequency channel different from the target base station operating frequency channel.
  • the switch 93 may be specifically configured to: switch the user equipment from a pilot cell to a real target cell of the target base station by physical channel reconfiguration.
  • the target base station further includes: a processor 103, configured to switch, by the switcher 102, the user equipment to the location according to the migration request message. Before guiding the cell, determining whether the guiding cell is in a working state;
  • the switch 102 is specifically configured to:
  • the processor 103 determines that the pilot cell is in an active state, the user equipment is handed over to the pilot cell according to the migration request message.
  • the real target cell of the target base station has at least one pilot cell
  • the processor 103 is specifically configured to:
  • the source base station is a macro base station
  • the source cell is a macro cell
  • the target base station is a micro base station
  • the real cell is a real micro-class cell.
  • an embodiment of the present invention further provides a user equipment 110, where the user equipment 110 includes:
  • the receiver 111 is configured to receive a physical channel reconfiguration message sent by the target base station, where the physical channel reconfiguration message is used to indicate a real target cell of the target base station to which the user equipment is to be handed over, and the target base station is authentic.
  • the target cell is a cell to which the user equipment is to be handed over after the target base station switches the source device from the source cell of the source base station to the pilot cell of the target base station;
  • the transmitter 112 is configured to send a physical channel reconfiguration complete message to the target base station, where the switch 113 is configured to switch to the real target cell.
  • the pilot cell of the target base station is a cell that has the same frequency as the source cell of the source base station but has a different primary scrambling code; the real target cell of the target base station is different from the pilot cell but has the same The cell of the primary scrambling code.
  • the user equipment provided by the embodiment of the present invention when performing handover between different frequency cells, first switches the UE from the source cell to the pilot cell with the same frequency as the source cell, and then switches from the pilot cell to the location.
  • the pilot cell has the same target cell as the PSC
  • the problem that the cell handover cannot be achieved due to the configurable neighbor cell restriction can be solved in the case of the macro cell and the micro-cell cell inter-frequency networking.
  • an embodiment of the present invention further provides a network system for cell handover, where the network system includes an RNC, a base station, and a user equipment.
  • the RNC may be any RNC provided by the foregoing embodiment of the present invention
  • the base station may be any one of the foregoing base stations provided by the foregoing embodiments of the present invention, where the user equipment may be provided by the foregoing embodiment of the present invention. Any kind of user equipment. Since the RNC and the base station have been described in detail above, they are not described herein, and the related content can be referred to the foregoing.
  • each unit included is only divided according to functional logic, but is not limited to the above division, as long as the corresponding function can be implemented;
  • the specific name is just to facilitate each other
  • the distinction is not intended to limit the scope of the invention.
  • the various embodiments in the specification have been described in detail, and the same or similar parts of the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
  • the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as the cells may or may not be physical. Units can be located in one place, or they can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • the connection relationship between the modules indicates that there is a communication connection between them, and specifically may be implemented as one or more communication buses or signal lines.
  • aspects of the present invention, or possible implementations of various aspects may be embodied as a system, method, or computer program product.
  • aspects of the invention, or possible implementations of various aspects may be in the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, etc.), or a combination of software and hardware aspects, They are collectively referred to herein as "circuits,""modules," or “systems.”
  • aspects of the invention, or possible implementations of various aspects may take the form of a computer program product, which is a computer readable program code stored on a computer readable medium.
  • the computer readable medium can be a computer readable signal medium or a computer readable storage medium.
  • the computer readable storage medium includes, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing, such as random access memory (RAM), read only memory (ROM), Erase programmable read-only memory (EPROM or flash memory), optical fiber, portable read-only memory (CD-ROM:).
  • RAM random access memory
  • ROM read only memory
  • EPROM Erase programmable read-only memory
  • CD-ROM portable read-only memory
  • the processor in the computer reads the computer readable program code stored in the computer readable medium, such that the processor can perform the functional actions specified in each step or combination of steps in the flowchart; A device that functions as specified in each block, or combination of blocks.
  • the computer readable program code can be executed entirely on the user's computer, partly on the user's computer, as a separate software package, partly on the user's computer and partly on the remote computer, or entirely on the remote computer or server. .
  • the functions noted in the various steps of the flowcharts or in the blocks of the block diagrams may not occur in the order noted in the drawings. For example, two steps, or two blocks shown in succession may be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
  • the above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

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Abstract

本发明提供一种小区切换的方法和装置,涉及通信领域,以解决宏小区和微类小区异频组网的情况下,无法完成小区切换的问题。所述方法包括:目标基站接收迁移请求消息,所述迁移请求消息用于指示用户设备从源基站的源小区要切换到的、所述目标基站的引导小区;所述目标基站根据所述迁移请求消息,将所述用户设备切换到所述引导小区;所述目标基站将所述用户设备从所述引导小区切换到所述目标基站的真实目标小区;其中,所述目标基站的引导小区是与所述源基站的源小区同频但具有不同的主扰码的小区;所述目标基站的真实目标小区是与所述引导小区异频但具有相同的主扰码的小区。本发明用于小区切换。

Description

一种小区切换的方法和装置
技术领域
本发明涉及通信领域, 尤其涉及一种小区切换的方法和装置。 背景技术
无线通信已进入数据业务爆炸性增长的时期, 为了提高网络容量和 降低传输成本, 业内提出了一种异构网络 ( Heterogeneous Network , Hetnet )技术。 异构网络由多个不同大小、 不同类型的小区一起构成, 包 括: 宏小区(Macro cell )和微类小区。其中微类小区包括: 微小区( Micro cell ) 、 微微小区 (Pico Cell ) 、 毫微微小区 ( Femto Cell ) 、 远端射频头 ( Remote Radio Head , RRH ) 形态的小区等。 通过为话务密集的区域部 署更多的微类小区, 可以有效提高该区域的网络容量, 并且微类小区因 规模较小 ,其建设成本 ( Capital Expenditure , Capax )和运营成本( Operating Expense , Opex )都比较低, 因此异构网络受到众多运营商的重视, 是无 线网络演进的一个重要方向。
从宏小区到微类小区的切换是指用户设备 (User Equipment, UE ) 驻留在宏小区的同时, 会向源节点发送服务质量报告, 源节点根据服务 质量报告可以将该 UE 从当前服务的宏小区切换到服务质量更好的其他 微类小区。
在当前宏小区和微类小区异频组网的场景下, 若宏小区下实际部署 的与所述宏小区异频的微类小区数量众多,当 UE需要从宏小区切换到那 些与所述宏小区异频的微类小区时, 由于宏小区侧的邻区资源和可配置 的邻区是受限的, 因而, 无法将这些实际部署的微类小区都配置为所述 宏小区的真实邻区, 进而无法实现宏小区到与该宏小区异频的微类小区 的切换。 发明内容 本发明的实施例提供一种小区切换的方法和装置, 能够解决宏小区 和微类小区异频组网的情况下, 小区切换无法完成的问题。
第一方面, 提供一种小区切换的方法, 所述方法包括:
源节点根据 UE上报的同频测量报告, 确定目标基站的引导小区; 所述源节点将所述 UE 从源基站的源小区切换到所述目标基站的所 述引导小区,并使所述目标基站将所述 UE从所述引导小区切换到所述目 标基站的真实目标小区;
其中, 所述目标基站的所述引导小区为与所述源基站的源小区同频 但具有不同主扰码(Primary Scrambling Code , PSC)的虚拟小区; 所述目 标基站的所述真实目标小区为与所述引导小区异频但具有相同 PSC的小 区。
结合第一方面, 在第一方面的第一种可能的实现方式中, 所述源小 区为宏小区, 且所述源小区下存在至少一个与所述源小区异频的真实小 区, 在所述源节点根据 UE上报的同频测量报告, 确定目标基站的引导小 区之前, 所述方法还包括:
存储所述源小区下的每个真实小区针对所述源小区的虚拟引导小 区;
所述源节点根据 UE 上报的同频测量报告, 确定目标基站的引导小 区包括:
所述源节点根据 UE 上报的同频测量报告, 从所存储的虚拟引导小 区中确定目标基站的引导小区。
结合第一方面的第一种可能的实现方式, 在第一方面的第二种可能 的实现方式中, 在所述源节点根据 UE上报的同频测量报告, 确定目标基 站的引导小区之前, 所述方法还包括:
存储所述宏小区的虚拟邻区与所述虚拟引导小区的对应关系; 所述源节点根据 UE 上报的同频测量报告, 从所存储的虚拟引导小 区中确定引导小区包括:
所述源节点根据 UE 上报的同频测量报告, 以及所述宏小区的虚拟 邻区与所述虚拟引导小区的对应关系, 从所存储的虚拟引导小区中确定 目标基站的引导小区。
结合第一方面至第一方面的第二种可能的实现方式中的任一种, 在 第一方面的第三种可能的实现方式中,所述源节点将所述 UE从源基站的 源小区切换到所述目标基站的所述引导小区包括:
所述源节点向所述目标基站发送迁移请求消息, 以使所述目标基站 根据所述迁移请求消息将所述 UE 从源基站的源小区切换到所述目标基 站的所述引导小区;
其中, 所述迁移请求消息在与所述目标基站的工作频率通道不同的 频率通道上发送。
结合第一方面的第三种可能的实现方式, 在第一方面的第四种可能 的实现方式中, 所述真实小区为真实微类小区。
第二方面, 提供一种小区切换的方法, 所述方法包括:
目标基站接收迁移请求消息, 所述迁移请求消息指示了 UE从源基 站的源小区要切换到的、 所述目标基站的引导小区;
所述目标基站根据所述迁移请求消息, 将所述 UE 切换到所述引导 小区;
所述目标基站将所述 UE 从所述引导小区切换到所述目标基站的真 实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。 结合第二方面, 在第二方面的第一种可能的实现方式中, 所述目标 基站接收迁移请求消息包括:
目标基站在与自身工作频率通道不同的频率通道上接收迁移请求消 息。
结合第二方面的第一种可能的实现方式, 在第二方面的第二种可能 的实现方式中,所述目标基站将所述 UE从所述引导小区切换到所述目标 基站的真实目标小区具体为:
所述目标基站通过物理信道重配置将所述 UE从所述引导小区切换 到所述目标基站的真实目标小区。
结合第二方面至第二方面的第二种可能的实现方式中的任一种, 在 第二方面的第三种可能的实现方式中, 在所述目标基站根据所述迁移请 求消息, 将所述用户设备切换到所述引导小区之前, 所述方法还包括: 确定所述引导小区是否处于工作状态;
所述目标基站根据所述迁移请求消息, 将所述用户设备切换到所述 引导小区包括:
所述目标基站在确定所述引导小区处于工作状态时, 所述目标基站 根据所述迁移请求消息, 将所述用户设备切换到所述引导小区。
结合第二方面的第三种可能的实现方式, 在第二方面的第四种可能 的实现方式中, 所述目标基站的真实目标小区具有至少一个引导小区, 所述确定所述引导小区是否处于工作状态包括:
根据预先设置的、 针对所述真实目标小区的各个引导小区的工作顺 序和工作时间, 确定所述引导小区是否处于工作状态。
结合第二方面的任一种实现方式, 在第二方面的第五种可能实现方 式中, 所述源基站为宏基站, 所述目标基站是微基站。 第三方面, 提供一种小区切换的装置, 所述装置包括:
确定单元, 用于根据 UE 上报的同频测量报告, 确定目标基站的引 导小区;
切换单元, 用于将所述 UE从源基站的源小区切换到所述目标基站 的所述引导小区,并使所述装置将所述 UE从所述引导小区切换到所述目 标基站的真实目标小区;
其中, 所述目标基站的所述引导小区为与所述源基站的源小区同频 但具有不同主扰码 (Primary Scrambling Code , PSC)的虚拟引导小区; 所 述目标基站的所述真实目标小区为与所述引导小区异频但具有相同 PSC 的真实小区。
结合第三方面, 在第三方面的第一种可能的实现方式中, 所述源小 区为宏小区, 且所述源小区下存在至少一个与所述源小区异频的真实小 区, 所述装置还包括:
存储单元, 用于在所述确定单元根据 UE 上报的同频测量报告, 确 定引导小区之前, 存储所述源小区下的每个真实小区针对所述源小区的 虚拟引导小区;
所述确定单元具体用于:
根据 UE 上报的同频测量报告, 从所存储的虚拟引导小区中确定目 标基站的引导小区。
结合第三方面的第一种可能的实现方式, 在第三方面的第二种可能 的实现方式中,
所述存储单元, 还用于在所述确定单元根据 UE 上报的同频测量报 告确定引导小区之前, 存储所述宏小区的虚拟邻区与所述虚拟引导小区 的对应关系;
所述确定单元具体用于:
根据 UE 上报的同频测量报告, 以及所述宏小区的虚拟邻区与所述 虚拟引导小区的对应关系, 从所存储的虚拟引导小区中确定目标基站的 引导小区。
结合第三方面的任一种实现方式, 在第三方面的第三种可能的实现 方式中, 所述切换单元具体用于:
向所述目标基站发送迁移请求消息, 以使所述目标基站根据所述迁 移请求消息将所述 UE 源基站的源小区切换到所述目标基站的所述引导 小区;
其中, 所述迁移请求消息在与所述目标基站的工作频率通道不同的 频率通道上发送。
第四方面, 提供一种小区切换的装置, 所述装置包括:
接收单元, 用于接收迁移请求消息, 所述迁移请求消息指示了用户 设备从源基站的源小区要切换到的、 所述装置的引导小区;
切换单元, 用于根据所述迁移请求消息, 将所述用户设备切换到所 述引导小区;
所述切换单元, 还用于将所述用户设备从所述引导小区切换到所述 装置的真实目标小区;
其中, 所述装置的引导小区是与所述源基站的源小区同频但具有不 同的主扰码的小区; 所述装置的真实目标小区是与所述引导小区异频但 具有相同的主扰码的小区。
结合第四方面, 在第四方面的第一种可能的实现方式中, 所述接收 单元具体用于:
接收在与所述装置工作频率通道不同的频率通道上的迁移请求消 息。
结合第四方面的第一种可能的实现方式, 在第四方面的第二种可能 的实现方式中, 所述切换单元具体用于:
通过物理信道重配置将所述用户设备从所述引导小区切换到所述装 置的真实目标小区。
结合第四方面的任一种实现方式, 在第四方面的第三种可能的实现 方式中, 所述装置还包括:
确定单元, 用于所述切换单元根据所述迁移请求消息, 将所述用户 设备切换到所述引导小区之前, 确定所述引导小区是否处于工作状态; 所述切换单元具体用于:
在所述确定单元确定所述引导小区处于工作状态时, 根据所述迁移 请求消息, 将所述用户设备切换到所述引导小区。
结合第四方面的的第三种可能的实现方式, 在第四方面的第四种可 能的实现方式中, 所述装置的真实目标小区具有至少一个引导小区, 所 述确定单元具体用于:
根据预先设置的、 针对所述真实目标小区的各个引导小区的工作顺 序和工作时间, 确定所述引导小区是否处于工作状态。
第五方面, 提供一种无线网络控制器 (Radio Network Controller , RNC), 所述 RNC包括处理器和切换器;
所述处理器, 用于根据 UE 上报的同频测量报告, 确定目标基站的 引导小区;
切换器, 用于将所述 UE 从源基站的源小区切换到所述目标基站的 所述引导小区,并使所述目标基站将所述 UE从所述引导小区切换到所述 目标基站的真实目标小区;
其中, 所述目标基站的所述引导小区为与所述源基站的源小区同频 但具有不同主扰码 (Primary Scrambling Code , PSC)的虚拟引导小区; 所 述目标基站的所述真实目标小区为与所述引导小区异频但具有相同 PSC 的真实小区。
结合第五方面, 在第五方面的第一种可能的实现方式中, 所述源小 区为宏小区, 且所述源小区下存在至少一个与所述源小区异频的真实小 区, 所述 RNC还包括:
存储器, 用于在所述处理器根据 UE 上报的同频测量报告, 确定引 导小区之前, 存储所述源小区下的每个真实小区针对所述源小区的虚拟 引导小区;
所述处理器具体用于: 根据 UE 上报的同频测量报告, 从所存储的虚拟引导小区中确定目 标基站的引导小区。
结合第五方面的第一种可能的实现方式, 在第五方面的第二种可能 的实现方式中,
所述存储单元, 还用于在所述处理器根据 UE 上报的同频测量报告 确定引导小区之前, 存储所述宏小区的虚拟邻区与所述虚拟引导小区的 对应关系;
所述处理器具体用于:
根据 UE 上报的同频测量报告, 以及所述宏小区的虚拟邻区与所述 虚拟引导小区的对应关系, 从所存储的虚拟引导小区中确定目标基站的 引导小区。
结合第五方面的任一种可能的实现方式, 在第五方面的第三种可能 的实现方式中, 所述切换器具体用于:
向所述目标基站发送迁移请求消息, 以使所述目标基站根据所述迁 移请求消息将所述 UE 源基站的源小区切换到所述目标基站的所述引导 小区;
其中, 所述迁移请求消息在与所述目标基站的工作频率通道不同的 频率通道上发送。
第六方面, 提供一种目标基站, 所述目标基站包括:
接收器, 用于接收迁移请求消息, 所述迁移请求消息指示了用户设 备从源基站的源小区要切换到的、 所述目标基站的引导小区;
切换器, 用于根据所述迁移请求消息, 将所述用户设备切换到所述 引导小区, 并将所述用户设备从所述引导小区切换到所述目标基站的真 实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。 结合第六方面, 在第六方面的第一种可能的实现方式中, 所述接收 器具体用于:
在与所述目标基站工作频率通道不同的频率通道上的接收所述迁移 请求消息。
结合第六方面的第一种可能的实现方式, 在第六方面的第二种可能 的实现方式中, 所述切换器具体用于:
通过物理信道重配置将所述用户设备从引导小区切换到所述目标基 站的真实目标小区。
结合第六方面或第六方面的第一种可能的实现方式, 在笫六方面的 第二种可能的实现方式中, 所述目标基站还包括:
处理器, 用于在所述切换器根据所述迁移请求消息, 将所述用户设 备切换到所述引导小区之前, 确定所述引导小区是否处于工作状态; 所述切换器具体用于:
在所述处理器确定所述引导小区处于工作状态时, 根据所述迁移请 求消息, 将所述用户设备切换到所述引导小区。
结合第六方面的第二种可能的实现方式, 在第六方面的第三种可能 的实现方式中, 所述目标基站的真实目标小区具有至少一个引导小区, 所述处理器具体用于:
根据预先设置的、 针对所述真实目标小区的各个引导小区的工作顺 序和工作时间, 确定所述引导小区是否处于工作状态。
第七方面, 提供一种小区切换的方法, 所述方法包括:
用户设备接收目标基站发送的物理信道重配置消息, 所述物理信道 重配置消息用于指示所述用户设备要切换到的所述目标基站的真实目标 小区, 所述目标基站的真实目标小区是所述目标基站将所述用户设备从 源基站的源小区切换到所述目标基站的引导小区之后所述用户设备要切 换到的小区;
所述用户设备向所述目标基站发送物理信道重配置完成消息, 并切 换至所述真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
第八方面, 提供一种用户设备, 所述用户设备包括:
接收单元, 用于接收目标基站发送的物理信道重配置消息, 所述物 理信道重配置消息用于指示所述用户设备要切换到的所述目标基站的真 实目标小区, 所述目标基站的真实目标小区是所述目标基站将所述用户 设备从源基站的源小区切换到所述目标基站的引导小区之后所述用户设 备要切换到的小区;
发送单元, 用于向所述目标基站发送物理信道重配置完成消息; 切换单元, 用于切换至所述真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
第九方面, 提供一种用户设备, 所述用户设备包括:
接收器, 用于接收目标基站发送的物理信道重配置消息, 所述物理 信道重配置消息用于指示所述用户设备要切换到的所述目标基站的真实 目标小区, 所述目标基站的真实目标小区是所述目标基站将所述用户设 备从源基站的源小区切换到所述目标基站的引导小区之后所述用户设备 要切换到的小区;
发送器, 用于向所述目标基站发送物理信道重配置完成消息, 切换器, 用于切换至所述真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。 本发明实施例提供的小区切换的方法和装置, 在进行异频小区之间 的切换时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再从所述引导小区切换到与所述引导小区具有相同 PSC 的真实小 区, 由于源小区和引导小区之间的切换为同频小区之间的切换, 而引导 小区又与真实小区具有相同的 PSC , 因而能够解决宏小区和微类小区异 频组网的情况下, 因可配置邻区受限导致的小区切换无法实现的问题。 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为本发明实施例提供的一种小区切换的方法的流程图; 图 2为本发明实施例提供的另一种小区切换的方法的流程图; 图 3 A为本发明实施例提供的一种小区切换的应用场景的示意图; 图 3B为针对图 3A所示应用场景的小区切换方法的一种示意图; 图 3C为针对图 3A所示应用场景的小区切换方法的一种示意图; 图 4为本发明实施例提供的另一种小区切换的应用场景的示意图; 图 5为本发明实施例提供的又一种小区切换的应用场景的示意图; 图 6A为本发明实施例提供的小区切换的装置的一结构框图; 图 6B为本发明实施例提供的小区切换的装置的另一结构框图; 图 7A为本发明实施例提供的小区切换的装置的一结构框图; 图 7B为本发明实施例提供的小区切换的装置的另一结构框图; 图 8为本发明实施例提供的用户设备的结构框图; 图 9A为本发明实施例提供的 RNC的一结构框图; 图 9B为本发明实施例提供的 RNC的另一结构框图;
图 10A为本发明实施例提供的目标基站的一结构框图; 图 10B为本发明实施例提供的目标基站的另一结构框图; 图 11为本发明实施例提供的用户设备的结构框图。 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的一部分实施例, 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 有做出创造性劳动的前提下所获得的所有其它实施例,都属于本发明保护 的范围。
本文中描述的技术可用于各种通信系统, 例如宽带码分多址
( WCDMA, Wideband Code Division Multiple Access Wireless )、 长期演 进 ( LTE , Long Term Evolution ) 系统, 以及其他此类通信系统。
本文中结合终端和 /或基站和 /或基站控制器来描述各种方面。
用户设备, 可以是无线终端, 无线终端可以是指向用户提供语音和 / 或数据连通性的设备, 具有无线连接功能的手持式设备、 或连接到无线调 制解调器的其他处理设备。 无线终端可以经无线接入网 (RAN, Radio Access Network ) 与一个或多个核心网进行通信, 无线终端可以是移动终 端, 如移动电话 (或称为"蜂窝"电话) 和具有移动终端的计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置, 它 们与无线接入网交换语言和 /或数据。 例如, 个人通信业务(PCS , Personal Communication Service ) 电话、 无绳电话、 会话发起协议 (SIP ) 话机、 无线本地环路 (WLL , Wireless Local Loop ) 站、 个人数字助理 (PDA, Personal Digital Assistant ) 等设备。 无线终端也可以称为系统、 订户单元 ( Subscriber Unit )、订户 占( Subscriber Station ),移动站( Mobile Station )、 移动台 ( Mobile )、 远程站 ( Remote Station )、 接入点 ( Access Point )、 远 程终端( Remote Terminal )、接入终端( Access Terminal )、 用户终端( User Terminal )、 用户代理 ( User Agent )、 用户设备 ( User Device )、 或用户装 备 ( User Equipment )。
基站(例如, 接入点)可以是指接入网中在空中接口上通过一个或多 个扇区与无线终端通信的设备。基站可用于将收到的空中帧与 IP分组进行 相互转换, 作为无线终端与接入网的其余部分之间的路由器, 其中接入网 的其余部分可包括网际协议(IP ) 网络。 基站还可协调对空中接口的属性 管理。 例如, 基站可以是 WCDMA中的基站 (NodeB ), 还可以是 LTE中的 演进型基站 ( NodeB或 eNB或 e-NodeB , evolutional Node B ), 本发明并不 限定。
源节点和目标节点,可以是 GSM或 CDMA中的基站控制器( B SC , base station controller ), 也可以是 WCDMA中的无线网络控制器 ( RNC , Radio Network Controller ), 本发明并不限定。
另外, 本文中术语"系统"和"网络"在本文中常被可互换使用。 本文中 术语"和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种 关系, 例如, A和 /或 B , 可以表示: 单独存在 A, 同时存在 A和 B , 单独存 在 B这三种情况。另外,本文中字符" /,,,一般表示前后关联对象是一种"或" 的关系。
图 1是本发明实施例提供的小区切换的方法的流程图。 参照图 1 , 本发 明实施例提供一种小区切换的方法, 所述方法基于源节点而描述, 所述源 节点可以为服务于源小区的 RNC , 所述方法可包括:
11、 源节点根据 UE上报的同频测量报告, 确定目标基站的引导小区。 其中, 所述源节点可以为源小区侧的 RNC , 所述源小区可以为宏基站 的宏小区。 在本发明实施例中, 所述引导小区为与所述源小区同频但具有 不同 PSC的虚拟小区,且所述引导小区是 UE从源小区首先要切换到的小区。 本发明实施例中提及的引导小区是针对宏小区而设置的, 用于让 UE从宏小 区切换到所述引导小区。
所述源节点根据 UE上报的同频测量报告, 确定引导小区是在 UE满足 小区切换条件的情况下进行的。 在宏小区与微类小区异频组网的场景下, 一个宏小区下可能会存在多个微类小区, 当 UE从一个宏小区进入该宏小区 下部署的一个异频微类小区时, 可能原来使用的该宏小区已经无法满足通 信需求, 因而, 当小区切换条件满足时, 需要切换到所述异频微类小区。 其中, 所述小区切换条件可以为, 在信道质量低于指定阀值时进行小区切 换等, 本发明对此不作限定。
在本发明实施例中, 所述源节点可通过 UE上报的同频测量报告, 确 定 UE所要切换到的引导小区。
具体而言,在 UE和其所在服务小区(即源小区)之间的信道质量变差而 满足小区切换条件时, RNC会向 UE发送测量控制信令, 所述测量控制信 令指示所述 UE对相邻小区进行测量;
UE接收所述测量控制信令, 基于参考信号和同频测量控制参数测量 相邻的各个小区的信道质量, 形成同频测量报告, 并向 RNC上报各个小区 的同频测量 4艮告;
RNC接收到各个小区的测量报告之后, 可根据这些测量报告获知 UE 与各个小区之间的信道质量, 进而确定所述 UE欲切换到的引导小区。
12、所述源节点将所述 UE从源基站的源小区切换到所述目标基站的所 述引导小区, 并使所述目标基站将所述 UE从所述引导小区切换到所述目标 基站的真实目标小区。
其中,所述引导小区为与所述源小区同频但具有不同 PSC的虚拟小区; 所述真实目标小区为与所述引导小区异频但具有相同 PSC的真实小区。
在本发明实施例中, 所述源小区为 UE在小区切换之前所在的小区, 所述引导小区为第一次小区切换时欲切换到的小区。所述源小区可以为宏 小区, 所述真实小区可以为真实微类小区。 同时需要说明的是, 在本发明实施例中, 源基站与目标基站是相邻的 基站。 所述源基站的源小区是所述源基站众多小区中的其中一个小区。 所 述引导小区和所述真实目标小区均是所述目标基站众多小区中的其中一个 小区。 所述引导小区与所述源小区具有相同的频率, 所述真实目标小区与 所述源小区具有不同的频率。
在本发明实施例中, 真实目标小区的引导小区可预先进行配置。 当宏 网络中仅存在一个宏小区时,可为所述真实目标小区预先配置一个针对该 宏小区的引导小区。 类似地, 当宏网络中存在多个异频的宏小区时, 可针 对该多个异频的宏小区中的每一个,为所述真实目标小区预先配置一个引 导小区, 即, 所述真实目标小区可具有多个引导小区, 该多个异频宏小区 中的每一个宏小区均对应所述真实目标小区的一个引导小区。 这样一来, 当 UE从任意一个宏小区切换到真实目标小区时, 都可以先切换到该宏小 区对应的引导小区, 进而再从所述引导小区切换到所述真实目标小区。 最 终实现宏小区到异频微类小区的切换。
可选地, 在本发明的一个实施例中, UE上 "^的所述同频测量 ^艮告可 携带所述 UE周边小区的 PSC、 小区同步信息 OFF和 Tm, 此时, 在所述源 节点在将所述 UE从源小区切换到所述目标基站的所述引导小区之前, 所 述方法还可包括:
所述源节点根据所述 UE周边小区的 PSC查询邻区配置, 获取所述引导 小区的小区标识;
所述源节点根据所述小区同步信息 OFF和 Tm, 计算得到所述引导小区 与所述源小区的系统帧号偏移值(System Frame Number, SFN-Offset)„ 此时,步骤 12中所述源节点将所述 UE从源基站的源小区切换到所述目 标基站的所述引导小区可包括: 所述源节点向所述引导小区所属的目标基 站发送迁移请求消息, 以使所述目标基站根据所述迁移请求消息将所述 UE 从源小区切换到所述引导小区, 其中, 所述迁移请求消息中携带所述引导 小区的 PSC、 所述引导小区的小区标识, 以及所述系统帧号偏移值。 需要说明的是, 在本发明实施例中, 所述源节点向所述引导小区所属 的目标基站发送迁移请求消息可以是, 所述源节点经由核心网发送迁移请 求消息至目标节点(例如, HNB GW或 RNC) , 再由所述目标节点将携带引 导小区指示信息的迁移请求消息发送给所述目标基站。
在本发明实施例中, 为了方便所述引导小区所属的目标基站接收所述 迁移请求消息而不影响正常通信, 所述迁移请求消息可在与所述目标基站 的工作频率通道不同的频率通道上发送。 即, 若所述引导小区所属的目标 基站的工作频率通道为第一频率通道, 则所述迁移请求消息在与所述第一 频率通道不同的第二频率通道上发送。
所述引导小区所属的目标基站在接收到携带引导小区指示信息的迁 移请求消息之后, 即可根据该迁移请求消息, 确定目标基站的引导小区, 并切换到所述引导小区。
在本发明实施例中, UE本身具有测量相邻小区的扰码的功能, 能够 根据 UE所在小区及相邻小区的服务质量进行比较,确定切换的目标小区, 将目标小区扰码以测量报告的形式上报给源节点。该测量报告可以为质量 检测报告等。 由于 UE功能的限制, 测量报告中只携带有引导小区扰码, 而不包含引导小区标识。 源节点在接收到 UE 发送的测量报告后, 根据 UE所在服务宏小区的标识信息和测量报告中包含的引导小区扰码, 可以 将 UE切换到与服务宏小区相邻并使用该引导小区扰码的小区。
可选地, 在本发明的一个实施例中, 所述源小区为宏小区, 且所述源 小区下存在至少一个与所述源小区异频的真实小区, 在步骤 11中所述源节 点根据 UE上报的同频测量报告, 确定引导小区之前, 本发明实施例提供的 小区切换的方法还可包括:
存储所述源小区下的每个真实小区针对所述源小区的虚拟引导小区; 此时步骤 11 中所述源节点根据 UE上报的同频测量报告, 确定引导 小区可包括:
所述源节点根据 UE上报的同频测量报告,从所存储的虚拟引导小区中 确定引导小区。
进一步地, 在步骤 11所述源节点根据 UE上报的同频测量报告, 确定引 导小区之前, 本发明实施例提供的小区切换的方法还可包括:
存储所述宏小区的虚拟邻区与所述虚拟引导小区的对应关系; 所述源节点根据 UE 上报的同频测量报告, 从所存储的虚拟引导小 区中确定引导小区包括:
所述源节点根据 UE上报的同频测量报告,以及所述宏小区的虚拟邻区 与所述虚拟引导小区的对应关系, 从所存储的虛拟引导小区中确定引导小 区。
在具体实现过程中,需要用户预先配置真实小区针对所述源小区的引 导小区, 以及预先配置所述源小区的虚拟邻区; 建立所述虚拟邻区与所述 引导小区的对应关系, 其中, 一个所述虚拟邻区对应多个所述引导小区。 在本发明实施例中, 可将具有相同 PSC的一类引导小区配置为宏小区的虚 拟邻区。
经过上述步骤后, 即可根据虚拟邻区确定对应的引导小区。
本发明实施例提供的小区切换的方法, 在进行异频小区之间的切换 时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再从 所述引导小区切换到与所述引导小区具有相同 PSC的真实小区, 能够解决 宏小区和微类小区异频组网的情况下,因可配置邻区受限导致的小区切换 无法实现的问题。
与上述方法相对应, 本发明实施例还提供一种小区切换的方法, 所述 方法基于目标基站而描述, 所述目标基站可以为微类小区的基站, 即微基 站。 参照图 2A, 所述方法包括:
21、 目标基站接收迁移请求消息, 所述迁移请求消息用于指示 UE从源 基站的源小区要切换到的所述目标基站的引导小区。
其中, 所述迁移请求消息中可携带所述引导小区的 PSC、 所述引导小 区的小区标识, 以及所述源小区与所述引导小区的系统帧号偏移值。
本步骤中, 所述基站接收迁移请求消息可包括: 目标基站在与自身 工作频率通道不同的频率通道上接收迁移请求消息。
具体而言, 本发明实施例中的基站可具有双频通道, 一个频率通道 用于服务小区的正常通信, 另一个频率通道针对引导小区, 可用于接收 迁移请求消息。
22、 所述目标基站根据所述迁移请求消息, 将所述用户设备切换到所 述引导小区。
其中, 所述迁移请求消息中携带所述引导小区的 PSC、 所述引导小区 的小区标识, 以及所述源小区与所述引导小区的系统帧号偏移值。 这样, 所述基站即可根据所述迁移请求消息携带的这些信息确定要切换到的引导 小区, 并进而将所述用户设备切换到所述引导小区。
23、所述目标基站将所述 UE从所述引导小区切换到所述目标基站的真 实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具有 不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小区异 频但具有相同的主扰码的小区。
进一步而言, 步骤 23中所述基站将所述 UE从所述引导小区切换到 所述目标基站的真实目标小区可包括:
所述目标基站通过物理信道重配置将所述 UE从引导小区切换到所述 目标基站的真实目标小区。 这样一来, 基站侧只涉及到空口信息的修改, 在目标基站内部即可完成, 不需要与核心网或家庭基站网关或 RNC进行交 互。
需要说明的是,在本发明实施例中, 源基站与目标基站是相邻的基站。 所述源基站的源小区是所述源基站众多小区中的其中一个小区。 所述引导 小区和所述真实目标小区均是所述目标基站众多小区中的其中一个小区。 所述引导小区与所述源小区具有相同的频率, 所述真实目标小区与所述源 小区具有不同的频率。
在本发明实施例中, 真实目标小区的引导小区可预先进行配置。 当宏 网络中仅存在一个宏小区时,可为所述真实目标小区预先配置一个针对该 宏小区的引导小区。 类似地, 当宏网络中存在多个异频的宏小区时, 可针 对该多个异频的宏小区中的每一个,为所述真实目标小区预先配置一个引 导小区, 即, 所述真实目标小区可具有多个引导小区, 该多个异频宏小区 中的每一个宏小区均对应所述真实目标小区的一个引导小区。 这样一来, 当 UE从任意一个宏小区切换到真实目标小区时, 都可以先切换到该宏小 区对应的引导小区, 进而再从所述引导小区切换到所述真实目标小区。 最 终实现宏小区到异频微类小区的切换。
在一个实施例中, 在步骤 22中所述目标基站根据所述迁移请求消息, 将所述用户设备切换到所述引导小区之前, 本发明实施例提供的小区切换 的方法还可包括:
确定引导小区是否处于工作状态;
此时, 步骤 22中所述目标基站根据所述迁移请求消息, 将所述用户 设备切换到所述引导小区包括:
所述目标基站在确定所述引导小区处于工作状态时, 根据所述迁移请 求消息, 将所述用户设备切换到所述引导小区。
在本发明实施例中, 若确定所述引导小区不处于工作状态, 则等待直 至所述引导小区处于工作状态时, 将所述 UE从与源基站的源小区切换到 所述目标基站的引导小区。
进一步地, 在本发明的实施例中, 所述真实目标小区具有至少一个 虚拟引导小区, 上面所述确定引导小区是否处于工作状态可包括:
根据预先设置的、 针对所述真实目标小区的各个虚拟引导小区的工作 顺序和工作时间, 确定引导小区是否处于工作状态。
其中, 本发明实施例中各个虚拟引导小区的工作顺序和工作时间可由 用户在目标基站上预先配置。 本发明实施例提供的小区切换的方法, 在进行异频小区之间的切换 时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再从 所述引导小区切换到与所述引导小区具有相同 PSC的真实目标小区, 能够 解决宏小区和微类小区异频组网的情况下,因可配置邻区受限导致的小区 切换无法实现的问题。
相应地, 本发明实施例还提供一种小区切换的方法, 参照图 2B , 所 述方法包括:
31、 用户设备接收目标基站发送的物理信道重配置消息, 所述物理信 道重配置消息用于指示所述用户设备要切换到的所述目标基站的真实目 标小区,所述目标基站的真实目标小区是所述目标基站将所述用户设备从 源基站的源小区切换到所述目标基站的引导小区之后所述用户设备要切 换到的小区;
32、 所述用户设备向所述目标基站发送物理信道重配置完成消息, 并 切换至所述真实目标小区;
其中,所述目标基站的引导小区是与所述源基站的源小区同频但具有 不同的主扰码的小区;所述目标基站的真实目标小区是与所述引导小区异 频但具有相同的主扰码的小区。
用户设备在接收到物理信道重配置消息之后, 进行物理信道重配置, 并在配置完成之后, 向目标基站发送物理信道重配置完成消息, 最终切换 至所述目标基站的真实目标小区。
本发明实施例提供的小区切换的方法, 在进行异频小区之间的切换 时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再从 所述引导小区切换到与所述引导小区具有相同 PSC的真实目标小区, 能够 解决宏小区和微类小区异频组网的情况下,因可配置邻区受限导致的小区 切换无法实现的问题。 另外, 需要说明的是, 本发明实施例提供的小区切换的方法包括小区 切换之前的准备阶段和小区切换阶段。 上面描述的主要是小区切换阶段 , 为了更好地理解, 下面对这两个阶段进行进一步说明。
小区切换之前的准备阶段:
( 1 ) RNC 接收用户输入的配置信息, 所述配置信息的具体内容可 以为: 配置所述引导小区的切换策略为 Iu接口硬切换或 Iur接口硬切换; 配置 UE的同频测量控制参数,使 UE同频测量报告携带源小区和引导小 区的同步信息。
( 2 ) 家庭基站在上电后, 向家庭基站网关发送 Iuh注册请求消息, 所述 Iuh 注册请求消息携带工作小区的信息, 还携带引导小区的频点、 PSC、 同频宏邻区的小区标识, 以及工作小区与其他微类小区之间的系统 帧号 (SFN, System Frame Number)偏移值。
( 3 )家庭基站网关将引导小区的信息作为独立小区的信息, 保存到 SFN偏移值信息表中。
( 4 ) 家庭基站网关向所述家庭基站发送 Iuh注册响应, 确认注册成 功。
本发明实施例提供的小区切换方法同时适用于 Iuh架构和 Iub架构。 其中, 当微基站使用传统 Iub 架构时, 其网络架构与宏基站相同, 微基站通过 Iub接口与 RNC进行通信,由 RNC进行无线资源的分配和管 理。 此种情况下, 小区切换之前的配置阶段仅包括上面的 ( 1 ) 。
而当微基站使用 3GPP标准 Iuh架构时, 其网络架构与宏基站不同, 微基站通过 Iuh接口与 HNB-GW进行通信, 由 RNC进行无线资源的分 配和管理。此种情况下, 小区切换之前的配置阶段包括上面的( 1 ) ~ ( 4 ) 。 小区切换阶段具体如下:
在 UE 和其所在服务小区(例如, 宏小区)之间的信道质量变差时, RNC向 UE发送测量控制信令, 所述测量控制信令指示所述 UE对相邻 小区进行测量;
UE接收所述测量控制信令,基于参考信号和同频测量控制参数 'J量 相邻的各个小区的信道质量, 并形成同频测量报告, 向 RNC发送各个小 区的测量报告;
RNC 接收到各个小区的测量报告之后, 可根据这些测量报告获知 UE与各个小区之间的信道质量。 所述 RNC在判断满足同频硬切换条件 时, 确定所述 UE需要切换到的小区为引导小区, 向核心网发送要求迁移 (Relocation Required)消息。 其中, 所述要求迁移消息携带所述 UE所在的 源小区的小区标识 (Cell ID)以及源小区和引导小区的测量报告。 核心网接收所述要求迁移消息, 并向目标节点发送迁移请求消息 (Relocation Request) ,要求所述目标节点做好迁移准备(即准备所需资源)。 其中, 所述目标节点可以为目标 RNC或家庭基站网关(HNB GW)。 具体 地, 对于 Iub架构, 所述目标节点为目标 RNC, 要求迁移消息转发给目 标 RNC; 对于 Iuh架构, 所述目标节点为目标 RNC, 要求迁移消息转发 给家庭基站网关(HNB GW)。 所述目标 RNC或所述家庭基站网关(HNB GW)接收到所述迁移请求 消息之后, 对所述迁移请求消息进行解析, 获取所述 UE所在源小区的小 区标识(Cell ID), 引导小区的 PSC以及源小区与引导小区的同步信息, 最终寻址找出真实目标小区的引导小区, 并向所述引导小区所属的目标 基站发送迁移请求消息, 所述迁移请求消息指示了用户设备从源基站的 源小区要切换到的、 所述目标基站真实目标小区的引导小区;
所述目标基站接收到所述目标 RNC 或所述家庭基站网关发送的迁 移请求消息之后, 对所述迁移请求消息进行解析, 获取所述目标基站真 实目标小区的引导小区, 并将所述 UE从源小区切换到所述引导小区; 所述目标基站向所述 UE 发送物理信道重配置 (Physical Channel Reconfiguration)消息, 所述物理信道重配置消息携带真实目标小区的小 区标识; 所述 UE接收所述物理信道重配置消息, 向所述真实目标小区所在 的基站发送物理信道重配置完成 (Physical Channel Reconfiguration Complete)消息。 所述真实目标小区所在的基站将所述 UE从所述引导小区切换到所 述真实目标小区。 经过上述过程, 最终完成宏小区与异频微类小区的异构网络中, UE 从宏小区到微类小区的切换。
为更好的理解本发明, 下面以几个具体实施例为例来对本发明进行 进一步说明。 亦须注意, 以下所列举的实施例只是本发明的一部分实施 例, 本领域技术人员由本发明所述内容, 可易于想到其他实施例, 它们 都在本发明的范围内。 同时需要注意的是, 由于前文已经对本发明的思想进行了详细描述, 下面列举的几个实施例为节省篇幅只是进行了简要描述, 因而, 各个实 施例中相对应的内容具体可参照前文描述。 同时需要说明的是, 下面各个实施例分别是针对一个真实小区对应 一个宏小区、 两个宏小区以及三个以上宏小区的情况进行的说明, 当然, 宏小区的范围内还可能存在其他真实微类小区, 但是, 本领域技术人员 了解的是, 其他真实微类小区的情况与所列举的这个真实微类小区的情 况类似, 可相应得到。 实施例 1 图 3A 是本发明实施例提供的一种小区切换情形的示意图。 参照图 3A, 本实施例针对一个宏小区、 该宏小区下的一个微类小区(真实的小区 1)组成的宏微异构网络。 在本实施例中,预先为真实小区 1建立一个引导 小区。 其中, 宏小区使用频点 Fl、 微类小区使用频点 F2进行组网。 本实施例提供的小区切换的方法包括下面的小区切换之间的配置阶 段和小区切换阶段。 小区切换之间的配置阶段过程如下:
1.利用单独一对射频收发通道为真实小区 1 建立与宏小区同频不同 扰的引导小区, 引导小区的 PSC使用与真实小区 1相同的 PSC;
2. 在宏网侧按照引导小区的 PSC和虚拟小区标识, 配置该引导小区 为宏小区的同频虚拟邻区; 针对到引导小区的切换策略配置为 Iu接口硬 切换或 Iur接口硬切换;
3. 配置 UE的同频测量控制参数, 使 UE在同频测量报告中携带源 及目标小区的同步信息。 在本发明实施例中, 微类小区侧基站可釆用传统 lub 架构抑或是 3GPP标准 luh架构, 相应地, 可对应于 lub架构由 RNC与微类小区侧基 站进行通信, 对应于 luh架构由 HNB-GW与微类小区侧基站进行通信。 下面参照图 3B和图 3C分别对这两种情形下的小区切换过程分别进行说 明。 情形一:
首先参照图 3B , 对此情形下的小区切换阶段进行简要说明。 小区切换阶段: 当 UE从宏小区发起向微类基站下引导小区的切换时, 宏 RNC和目 标 RNC进行同频 Iu接口迁移(relocation)的切换入处理, 完成唯一目标微 类基站引导小区的确定和切换; 目标微类基站对 UE再做一次物理信道重配置,将 UE切换到真正的 异频小区 1。 本次切换只涉及到空口信息的修改, 在基站内部完成即可, 不需要与 RNC和核心网交互。
具体切换过程可参照图 3B和前文描述, 在此不再赘述。 情形二:
参下面照图 3C , 对此情形下的小区切换阶段进行简要说明。 小区切换阶段:
HNB上电向 HNB GW发送 Iuh注册请求消息, 所述 Iuh注册请求 消息除了携带所述 HNB 自身工作小区信息外, 还有引导小区的 PSC、 真 实小区标识、 各同频宏邻区的小区标识和与引导小区的系统帧号偏移值, HNB GW将引导小区的信息作为独立小区的信息保存到系统帧号偏移值 信息表中;
当 UE从宏小区发起向 HNB引导小区的切换时,宏 RNC和 HNB GW 进行同频 Iu接口迁移(relocation)的切换入处理, 完成唯一目标 HNB引导 小区的确定和切换;
目标 HNB对 UE再做一次物理信道重配置, 将 UE切换到真正的异 频小区 1。 本次切换只涉及到空口信息的修改, 在 HNB内部完成即可, 不需要与 HNB GW和核心网交互。 具体切换过程可参照图 3C和前文描述, 在此不再赘述。 本发明实施例提供的小区切换的方法, 在进行异频小区之间的切换 时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再 从所述引导小区切换到与所述引导小区具有相同 PSC的真实小区,能够 解决宏小区和微类小区异频组网的情况下, 因可配置邻区受限导致的小 区切换无法实现的问题。 实施例 2 图 4是本发明实施例提供的一种小区切换情形的示意图。参照图 2A, 本实施例针对两个宏小区和一个微类小区(真实的小区 1)组成的宏微异构 网络。 其中, 两个宏小区分别使用频点 F1和 F2。 所述微类小区位于其中 一个宏小区下(本实施例中具体在宏小区 F2下),共用该宏小区的频点 F2。 在本实施例中, 预先为真实小区 1建立一个针对宏小区 F1的引导小区。 本实施例中小区切换之间的配置阶段过程如下:
1.利用单独一对射频收发通道为真实小区 1建立与宏小区 F1同频不 同扰的引导小区, 引导小区的 PSC使用与真实小区 1相同的 PSC;
2. 在宏小区 F1侧按照引导小区的 PSC和虚拟小区标识, 配置该引 导小区为宏小区 F1 的同频虚拟邻区; 在宏小区 F2侧按照真实小区 1 的 PSC和虚拟小区标识, 配置真实小区 1为宏小区 F2的同频虚拟邻区; 在 宏 RNC侧, 针对到引导小区的切换策略配置为 Iu接口硬切换或 Iur接口 硬切换;
3. 配置 UE的同频测量控制参数, 使 UE在同频测量报告中携带源 及目标小区的同步信息。 本实施例提供的小区切换的方法如下: 情形一:
基站上电后, 向 HNB GW发送 Iuh注册请求消息, 给 HNB GW上 报引导小区的 PSC、 真实小区标识、 各同频宏邻区小区标识和与引导小 区的系统帧号偏移值;
当 UE从宏小区 F1发起切换时, HNB GW按照同频 Iu接口系统帧 号偏移值 (SFN-offset ) 方案进行目标小区确定, 并下发切换消息给引导 小区, UE先切换到真实小区 1的引导小区, 再由基站空口进行一次物理 信道重配置, 将 UE切换到真正的异频真实小区 1。 本次切换只涉及到空 口信息的修改 , HNB在内部完成即可,不需要与 HNB GW和核心网交互。 当 UE从宏小区 F2发起切换时 ,按照正常的同频切换流程进行即可。 情形二:
当 UE从宏小区 F1发起切换时, RNC按照同频 Iu接口系统帧号偏 移值( SFN-offset )方案进行目标小区确定, 并下发切换消息给引导小区, UE先切换到真实小区 1的引导小区, 再由基站空口进行一次物理信道重 配置, 将 UE切换到真正的异频真实小区 1。 本次切换只涉及到空口信息 的修改, 在基站内部完成即可, 不需要与 RNC和核心网交互。
当 UE从宏小区 F2发起切换时 ,按照正常的同频切换流程进行即可。 本发明实施例提供的小区切换的方法, 在进行异频小区之间的切换 时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再 从所述引导小区切换到与所述引导小区具有相同 PSC的真实小区,能够 解决宏小区和微类小区异频组网的情况下, 因可配置邻区受限导致的小 区切换无法实现的问题。 实施例 3 图 5是本发明实施例提供的一种小区切换情形的示意图。 参照图 5 , 本实施例针对三个宏小区和一个微类小区(真实的小区 1)组成的宏微异构 网络。 其中, 三个宏小区分别使用频点 Fl、 F2 和 F3。 所述微类小区位 于其中一个宏小区下(本实施例中具体在宏小区 F3下), 共用该宏小区的 频点 F3。 在本实施例中, 为真实小区 1建立两个引导小区: 其中一个引 导小区针对宏小区 F1 , 另一个引导小区针对宏小区 F2。 本实施例中小区切换之间的配置阶段过程如下:
1.利用单独一对射频收发通道为真实小区 1分别建立与宏小区 F1同 频不同扰的引导小区 1和与宏小区 F2同频不同扰的引导小区 2 , 引导小 区 1和引导小区 2的 PSC使用与真实小区 1相同的 PSC; 2. 在宏小区 F1侧按照引导小区 1的 PSC和虚拟小区标识, 配置该 引导小区 1为宏小区 F1的同频虚拟邻区;在宏小区 F2侧按照引导小区 2 的 PSC和虚拟小区标识,配置该引导小区 2为宏小区 F2的同频虚拟邻区; 在宏小区 F3侧按照真实小区 1的 PSC和虚拟小区标识, 配置真实小区 1 为宏小区 F3 的同频虚拟邻区; 在宏 RNC侧, 针对到引导小区的切换策 略配置为 Iu接口硬切换或 Iur接口硬切换;
3. 配置 UE的同频测量控制参数, 使 UE在同频测量报告中携带源 及目标小区的同步信息。 本实施例提供的小区切换的方法包括: 情形一:
基站上电后, 向 HNB GW发送 Iuh注册请求消息, 给 HNB GW上 报引导小区的 PSC、 真实小区标识、 各同频宏邻区的小区标识和与引导 小区的系统帧号偏移值; 当 UE从宏小区 F1发起切换时, 若此时, 真实小区 1的引导小区 1 处于工作状态下, 则 HNB GW 按照同频 Iu 接口系统帧号偏移值 ( SFN-offset ) 方案进行目标小区确定, 并下发切换消息给真实小区 1对 应的基站, UE先切换到引导小区 1 , 再由所述基站空口进行一次物理信 道重配置, 将 UE切换到真正的异频真实小区 1。 当 UE从宏小区 F2发起切换时, 若此时, 真实小区 1的引导小区 1 处于工作状态下, 而真实小区 1 的引导小区 2不处于工作状态, 则需等 待引导小区 2处于工作状态时,再由 HNB GW按照同频 Iu接口系统帧号 偏移值 (SFN-offset ) 方案进行目标小区确定, 并下发切换消息给真实小 区 1对应的基站, UE先切换到引导小区 2 , 再由所述基站空口进行一次 物理信道重配置, 将 UE切换到真正的异频真实小区 1。 当 UE从宏小区 F3发起切换时,按照正常的同频切换流程进行即可。 情形二:
当 UE从宏小区 F1发起切换时, 若此时, 真实小区 1的引导小区 1 处于工作状态下, 则 RNC按照同频 Iu接口系统帧号偏移值( SFN-offset ) 方案进行目标小区确定, 并下发切换消息给真实小区 1对应的基站, UE 先切换到引导小区 1 , 再由所述基站空口进行一次物理信道重配置, 将 UE切换到真正的异频真实小区 1。
当 UE从宏小区 F2发起切换时, 若此时, 真实小区 1的引导小区 1 处于工作状态下, 而真实小区 1 的引导小区 2不处于工作状态, 则需等 待引导小区 2处于工作状态时,再由 RNC按照同频 Iu接口系统帧号偏移 值 (SFN-offset ) 方案进行目标小区确定, 并下发切换消息给真实小区 1 对应的基站, UE先切换到引导小区 2 , 再由所述基站空口进行一次物理 信道重配置, 将 UE切换到真正的异频真实小区 1。 当 UE从宏小区 F3发起切换时 ,按照正常的同频切换流程进行即可。 本发明实施例提供的小区切换的方法, 在进行异频小区之间的切换 时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再 从所述引导小区切换到与所述引导小区具有相同 PSC的真实小区,能够 解决宏小区和微类小区异频组网的情况下, 因可配置邻区受限导致的小 区切换无法实现的问题。
需要说明的是, 受射频收发通道限制, 引导小区同时只能工作在与 一个宏网同频的状态下, 此时, 若 UE从其他频点的宏网切换到真实小区 1 , 可能发生掉话。 因此, 可通过现网宏网的业务及话统情况, 调整射频 通道工作在各引导小区的轮换时间和比例, 以减少切换掉话对网络关键 性能指标的影响。
以上是针对宏网络使用三个频点的情况进行的说明, 需要指出的是, 本发明同样适用于宏网络使用三个以上的频点的情况。 在宏网络使用 n(n > 3)个频点(Fl、 F2...Fn)的情况下, 利用单独一对 射频收发通道建立与 Fl ...Fn-Ι宏小区同频不同扰的引导小区。 由于一对 射频收发通道同时只能工作在一个引导小区的状态, 该射频收发通道需 在引导小区 1至引导小区 n-1的状态间轮流切换。 即: 首先建立引导小区 1 , 配置引导小区 1 的频率与宏小区 F1 的频率相同, PSC使用与真实小 区 1相同的 PSC; 工作一段时间后, 重建引导小区为引导小区 2 , 调整引 导小区 2的频率与宏小区 F2的频率相同, PSC仍使用与真实小区 1相同 的 PSC; 工作一段时间后, 重建引导小区为引导小区 3 , 调整引导小区 3 的频率与宏小区 F3的频率相同, PSC仍使用与真实小区 1相同的 PSC; 后续依次类推, 直到重建引导小区 n-1 , 调整引导小区 n-1的频率与宏小 区 F n-1的频率相同, PSC仍使用与真实小区 1相同的 PSC。 需要说明的是, 与现有技术方案相比, 本发明所涉及的宏网到微类 小区异频切换的方法具有以下优点:
1、 解决宏小区和微类小区异频组网的情况下, 因可配置邻区受限 导致的小区切换无法实现的问题, 有效提高切换成功率和整网关键性能 指标;
2、 切换过程在基站内部即可完成, 不需要与 HNB GW/RNC和核心 网交互;
3、 该技术不需要修改现有标准流程和信元, 可支持与第三方 RNC 对接使用;
4、 在宏网多频点的场景下, 通过小区轮换工作的方式, 不需要多套 射频收发通道分别建立引导小区, 可有效降低应用成本。
与上述小区切换的方法相对应, 本发明实施例还提供一种小区切换 的装置。 图 6A为本发明实施例提供的小区切换的装置的结构框图。 参照 图 6A, 本发明实施例提供的小区切换的装置 60包括确定单元 61和切换 单元 62。 其中,
确定单元 61 , 用于根据 UE上报的同频测量报告, 确定目标基站的 引导小区;
切换单元 62 , 用于将所述 UE从源基站的源小区切换到所述目标基 站的所述引导小区,并使所述目标基站将所述 UE从所述引导小区切换到 所述目标基站的真实目标小区;
其中, 所述目标基站的所述引导小区为与所述源基站的源小区同频 但具有不同主扰码 (Primary Scrambling Code , PSC)的虚拟引导小区; 所 述目标基站的所述真实目标小区为与所述引导小区异频但具有相同 PSC 的真实小区。
本发明实施例提供的小区切换的装置, 在进行异频小区之间的切换 时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再 从所述引导小区切换到与所述引导小区具有相同 PSC的真实小区,由于 源小区和引导小区之间的切换为同频小区之间的切换, 而引导小区又与 真实小区具有相同的 PSC , 因而能够解决宏小区和微类小区异频组网的 情况下, 因可配置邻区受限导致的小区切换无法实现的问题。
在本发明的一个实施例中, 参照图 6B , 所述源小区为宏小区, 且所 述源小区下存在至少一个与所述源小区异频的真实小区, 所述装置 60还 可包括:
存储单元 63 ,用于在所述确定单元 61根据 UE上报的同频测量报告, 确定引导小区之前, 存储所述源小区下的每个真实小区针对所述源小区 的虚拟引导小区;
此时, 所述确定单元 61可具体用于:
根据 UE 上报的同频测量报告, 从所存储的虚拟引导小区中确定引 导小区。
进一步地, 在本发明的另一个实施例中, 所述存储单元 63 ,还用于在所述确定单元 61根据 UE上报的同频测 量报告确定引导小区之前, 存储所述宏小区的虚拟邻区与所述虚拟引导 小区的对应关系;
所述确定单元 61可具体用于:
根据 UE 上报的同频测量报告, 以及所述宏小区的虚拟邻区与所述 虚拟引导小区的对应关系, 从所存储的虚拟引导小区中确定引导小区。
在本发明实施例中, 所述切换单元 62可具体用于:
向所述目标基站发送迁移请求消息, 以使所述目标基站根据所述迁 移请求消息将所述 UE 源基站的源小区切换到所述目标基站的所述引导 小区;
其中, 所述迁移请求消息在与所述目标基站的工作频率通道不同的 频率通道上发送。
需要指出的是, 在本发明实施例中, 所述源小区为宏小区, 所述真 实小区为微类真实小区。 与上述小区切换的方法相对应, 本发明实施例还提供一种小区切换 的装置。 图 7A为本发明实施例提供的小区切换的装置的结构框图。 参照 图 7A, 本发明实施例提供的小区切换的装置 70包括接收单元 71、 切换 单元 72。 其中:
接收单元 71 , 用于接收迁移请求消息, 所述迁移请求消息用于指示 用户设备从源基站的源小区要切换到的所述装置的引导小区;
切换单元 72 , 用于根据所述接收单元 71接收的所述迁移请求消息, 将所述用户设备切换到所述引导小区;
所述切换单元 72 , 还用于将所述用户设备从所述引导小区切换到所 述装置的真实目标小区;
其中, 所述装置的引导小区是与所述源基站的源小区同频但具有不 同的主扰码的小区; 所述装置的真实目标小区是与所述引导小区异频但 具有相同的主扰码的小区。
同时需要说明的是, 在本发明实施例中, 所述源基站的源小区是所述 源基站众多小区中的其中一个小区。 所述引导小区和所述真实目标小区均 是所述装置众多小区中的其中一个小区。 所述引导小区与所述源小区具有 相同的频率, 所述真实目标小区与所述源小区具有不同的频率。
本发明实施例提供的小区切换的装置, 在进行异频小区之间的切换 时, 通过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再 从所述引导小区切换到与所述引导小区具有相同 PSC的真实小区,由于 源小区和引导小区之间的切换为同频小区之间的切换, 而引导小区又与 真实小区具有相同的 PSC , 因而能够解决宏小区和微类小区异频组网的 情况下, 因可配置邻区受限导致的小区切换无法实现的问题。
在本发明的一个实施例中, 所述接收单元 71可具体用于:
接收在与所述装置的工作频率通道不同的频率通道上的迁移请求消 息。
进一步地, 在本发明的另一个实施例中, 所述切换单元 72可具体用 于:
通过物理信道重配置将所述用户设备从所述引导小区切换到所述装 置的真实目标小区。
在本发明在又一个实施例中, 如图 7B所示, 所述装置还可包括: 确定单元 73 , 用于所述切换单元 72根据所述迁移请求消息, 将所 述用户设备切换到所述引导小区之前, 确定所述引导小区是否处于工作 状态;
所述切换单元 72具体用于:
在所述确定单元 73确定所述引导小区处于工作状态时,根据所述迁 移请求消息, 将所述用户设备切换到所述引导小区。
更进一步地, 在本发明的又一个实施例中, 所述装置的真实目标小 区具有至少一个引导小区, 所述确定单元 73具体用于: 根据预先设置的、 针对所述真实目标小区的各个引导小区的工作顺 序和工作时间, 确定所述引导小区是否处于工作状态。
需要指出的是, 在本发明实施例中, 所述源基站为宏基站, 所述源 小区为宏小区, 所述装置为微基站, 所述真实小区为真实微类小区。
相应地, 本发明实施例还提供一种用户设备。 图 8为本发明实施例 提供的用户设备的结构框图。 参照图 8 , 本发明实施例提供的用户设备 80包括接收单元 81、 发送单元 82和切换单元 83。 其中:
所述用户设备 80包括:
接收单元 81 , 用于接收目标基站发送的物理信道重配置消息, 所述 物理信道重配置消息用于指示所述用户设备要切换到的所述目标基站的 真实目标小区, 所述目标基站的真实目标小区是所述目标基站将所述用 户设备从源基站的源小区切换到所述目标基站的引导小区之后所述用户 设备要切换到的小区;
发送单元 82 , 用于向所述目标基站发送物理信道重配置完成消息; 切换单元 83 , 用于切换至所述真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
本发明实施例提供的用户设备, 在进行异频小区之间的切换时, 通 过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再从所述 引导小区切换到与所述引导小区具有相同 PSC的真实目标小区,能够解 决宏小区和微类小区异频组网的情况下, 因可配置邻区受限导致的小区 切换无法实现的问题。 与上述小区切换的方法相对应, 本发明实施例还提供一种 RNC。 图 9A为本发明实施例提供的 RNC的结构框图。 参照图 9A, 本发明实施例 提供的 RNC 90包括处理器 91和切换器 92。 其中; 所述处理器 91 , 用于根据 UE上报的同频测量报告, 确定目标基站 的引导小区;
切换器 92 , 用于将所述 UE从源基站的源小区切换到所述目标基站 的所述引导小区,并使所述目标基站将所述 UE从所述引导小区切换到所 述目标基站的真实目标小区;
其中, 所述目标基站的所述引导小区为与所述源基站的源小区同频 但具有不同主扰码 (Primary Scrambling Code , PSC)的虚拟引导小区; 所 述目标基站的所述真实目标小区为与所述引导小区异频但具有相同 PSC 的真实小区。
本发明实施例提供的 RNC , 在进行异频小区之间的切换时, 通过先 将 UE从源小区切换到与该源小区同频的引导小区, 进而再从所述引导 小区切换到与所述引导小区具有相同 PSC的真实小区,由于源小区和引 导小区之间的切换为同频小区之间的切换, 而引导小区又与真实小区具 有相同的 PSC , 因而能够解决宏小区和微类小区异频组网的情况下, 因 可配置邻区受限导致的小区切换无法实现的问题。
图 9B为本发明实施例提供的 RNC的另一结构框图。 参照图 9B , 在 本发明的一个实施例中, 所述源小区为宏小区, 且所述源小区下存在至 少一个与所述源小区异频的真实小区, 所述 RNC 90还包括:
存储器 93 , 用于在所述处理器 91根据 UE上报的同频测量报告, 确 定引导小区之前, 存储所述源小区下的每个真实小区针对所述源小区的 虚拟引导小区;
此时, 所述处理器 91具体用于:
根据 UE 上报的同频测量报告, 从所存储的虚拟引导小区中确定引 导小区。
进一步地, 在本发明的另一个实施例中,
所述存储器 93 , 还用于在所述处理器根据 UE上报的同频测量报告 确定引导小区之前, 存储所述宏小区的虚拟邻区与所述虚拟引导小区的 对应关系;
所述处理器 91具体用于:
根据 UE 上报的同频测量报告, 以及所述宏小区的虚拟邻区与所述 虚拟引导小区的对应关系, 从所存储的虚拟引导小区中确定引导小区。
在本发明实施例中, 所述切换器 92可具体用于:
向所述目标基站发送迁移请求消息, 以使所述目标基站根据所述迁 移请求消息将所述 UE 源基站的源小区切换到所述目标基站的所述引导 小区;
其中, 所述迁移请求消息在与所述目标基站的工作频率通道不同的 频率通道上发送。
需要指出的是, 在本发明实施例中, 所述源基站为宏基站, 所述源 小区为宏小区, 所述目标基站为微基站, 所述真实小区为真实微类小区。 与上述小区切换的方法相对应,本发明实施例还提供一种目标基站。 参照图 10A, 本发明实施例提供的目标基站 100包括接收器 101和切换 器 102。 其中;
接收器 101 , 用于接收迁移请求消息, 所述迁移请求消息指示了 UE 从源基站的源小区要切换到的所述目标基站的引导小区;
切换器 102 , 用于根据所述接收器 101 接收的所述迁移请求消息, 将所述用户设备切换到所述引导小区, 并将所述用户设备从所述引导小 区切换到所述目标基站的真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
同时需要说明的是, 在本发明实施例中, 源基站与目标基站是相邻的 基站。 所述源基站的源小区是所述源基站众多小区中的其中一个小区。 所 述引导小区和所述真实目标小区均是所述目标基站众多小区中的其中一个 小区。 所述引导小区与所述源小区具有相同的频率, 所述真实目标小区与 所述源小区具有不同的频率。
本发明实施例提供的目标基站, 在进行异频小区之间的切换时, 通 过先将 UE从源小区切换到与该源小区同频的引导小区, 进而再从所述 引导小区切换到与所述引导小区具有相同 PSC的真实小区,由于源小区 和引导小区之间的切换为同频小区之间的切换, 而引导小区又与真实小 区具有相同的 PSC , 因而能够解决宏小区和微类小区异频组网的情况 下, 因可配置邻区受限导致的小区切换无法实现的问题。
在本发明的一个实施例中, 所述接收器 101具体用于:
在与所述目标基站工作频率通道不同的频率通道上接收所述迁移请 求消息。
进一步地,在本发明的另一个实施例中,所述切换器 93可具体用于: 通过物理信道重配置将所述用户设备从引导小区切换到所述目标基 站的真实目标小区。
在本发明的又一个实施例中, 如图 10B所示, 所述目标基站还包括: 处理器 103 , 用于在所述切换器 102根据所述迁移请求消息, 将所 述用户设备切换到所述引导小区之前, 确定所述引导小区是否处于工作 状态;
此时, 所述切换器 102具体用于:
在所述处理器 103确定所述引导小区处于工作状态时, 根据所述迁 移请求消息, 将所述用户设备切换到所述引导小区。
进一步地, 在本发明的又一个实施例中, 所述目标基站的真实目标 小区具有至少一个引导小区, 所述处理器 103具体用于:
根据预先设置的、 针对所述真实目标小区的各个引导小区的工作顺 序和工作时间, 确定所述引导小区是否处于工作状态。
需要指出的是, 在本发明实施例中, 所述源基站为宏基站, 所述源 小区为宏小区, 所述目标基站为微基站, 所述真实小区为真实微类小区。 相应地, 参照图 11 , 本发明实施例还提供一种用户设备 110 , 所述 用户设备 110包括:
接收器 111 , 用于接收目标基站发送的物理信道重配置消息, 所述 物理信道重配置消息用于指示所述用户设备要切换到的所述目标基站的 真实目标小区, 所述目标基站的真实目标小区是所述目标基站将所述用 户设备从源基站的源小区切换到所述目标基站的引导小区之后所述用户 设备要切换到的小区;
发送器 112 , 用于向所述目标基站发送物理信道重配置完成消息, 切换器 113 , 用于切换至所述真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
本发明实施例提供的用户设备, 在进行异频小区之间的切换时, 通 过先将 UE从源小区切换到与该源小区同频的引导小区,进而再从所述引 导小区切换到与所述引导小区具有相同 PSC的真实目标小区, 能够解决 宏小区和微类小区异频组网的情况下, 因可配置邻区受限导致的小区切 换无法实现的问题。 此外, 本发明实施例还提供一种小区切换的网络系统, 所述网络系 统包括 RNC和基站和用户设备。 其中, RNC可以为前述本发明实施例所 提供的任一种 RNC; 所述基站可以为前述本发明实施例所提供的任一种 基站, 所述用户设备可以为前述本发明实施例所提供的任一种用户设备。 由于前文已经进行了所述 RNC和所述基站进行了详细说明, 在此不在赘 述, 相关内容可参照前文。
值得注意的是, 上述小区切换的装置实施例中, 所包括的各个单元 只是按照功能逻辑进行划分的, 但并不局限于上述的划分, 只要能够实 现相应的功能即可; 另外, 各功能单元的具体名称也只是为了便于相互 区分, 并不用于限制本发明的保护范围。 本说明书中的各个实施例已有侧重地进行了描述, 各个实施例之间 相同相似的部分互相参见即可, 每个实施例重点说明的都是与其他实施 例的不同之处。 尤其, 对于装置实施例而言, 由于其基本相似于方法实 施例, 所以描述得比较简单, 相关之处参见方法实施例的部分说明即可。 需说明的是, 以上所描述的装置实施例仅仅是示意性的, 其中所述 作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单 元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部 分或者全部模块来实现本实施例方案的目的。 另外, 本发明提供的装置 实施例附图中, 模块之间的连接关系表示它们之间具有通信连接, 具体 可以实现为一条或多条通信总线或信号线。 本领域普通技术人员在不付 出创造性劳动的情况下, 即可以理解并实施。 本领域普通技术人员将会理解, 本发明的各个方面、 或各个方面的 可能实现方式可以被具体实施为系统、 方法或者计算机程序产品。 因此, 本发明的各方面、 或各个方面的可能实现方式可以釆用完全硬件实施例、 完全软件实施例 (包括固件、 驻留软件等等), 或者组合软件和硬件方面 的实施例的形式, 在这里都统称为"电路"、 "模块"或者"系统"。 此外, 本 发明的各方面、 或各个方面的可能实现方式可以釆用计算机程序产品的 形式, 计算机程序产品是指存储在计算机可读介质中的计算机可读程序 代码。 计算机可读介质可以是计算机可读信号介质或者计算机可读存储介 质。 计算机可读存储介质包含但不限于电子、 磁性、 光学、 电磁、 红外 或半导体系统、 设备或者装置, 或者前述的任意适当组合, 如随机存取 存储器 (RAM)、 只读存储器 (ROM)、 可擦除可编程只读存储器 (EPROM 或者快闪存储器)、 光纤、 便携式只读存储器 (CD-ROM:)。 计算机中的处理器读取存储在计算机可读介质中的计算机可读程序 代码, 使得处理器能够执行在流程图中每个步骤、 或各步骤的组合中规 定的功能动作; 生成实施在框图的每一块、 或各块的组合中规定的功能 动作的装置。 计算机可读程序代码可以完全在用户的计算机上执行、 部分在用户 的计算机上执行、 作为单独的软件包、 部分在用户的计算机上并且部分 在远程计算机上, 或者完全在远程计算机或者服务器上执行。 也应该注 意, 在某些替代实施方案中, 在流程图中各步骤、 或框图中各块所注明 的功能可能不按图中注明的顺序发生。 例如, 依赖于所涉及的功能, 接 连示出的两个步骤、 或两个块实际上可能被大致同时执行, 或者这些块 有时候可能被以相反顺序执行。 以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不 局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本 发明的保护范围应以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种小区切换的方法, 其特征在于, 所述方法包括:
目标基站接收迁移请求消息, 所述迁移请求消息用于指示用户设备 从源基站的源小区要切换到的所述目标基站的引导小区;
所述目标基站根据所述迁移请求消息, 将所述用户设备切换到所述 引导小区;
所述目标基站将所述用户设备从所述引导小区切换到所述目标基站 的真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
2、 根据权利要求 1所述的方法, 其特征在于, 所述目标基站接收迁 移请求消息包括:
目标基站在与自身工作频率通道不同的频率通道上接收所述迁移请 求消息。
3、 根据权利要求 2所述的方法, 其特征在于, 所述目标基站将所述 用户设备从所述引导小区切换到所述目标基站的真实目标小区具体为: 所述目标基站通过物理信道重配置将所述用户设备从所述引导小区 切换到所述目标基站的真实目标小区。
4、 根据权利要求 1-3任一所述的方法, 其特征在于, 在所述目标基 站根据所述迁移请求消息, 将所述用户设备切换到所述引导小区之前, 所述方法还包括:
确定所述引导小区是否处于工作状态;
所述目标基站根据所述迁移请求消息, 将所述用户设备切换到所述 引导小区包括:
所述目标基站在确定所述引导小区处于工作状态时, 所述目标基站 根据所述迁移请求消息, 将所述用户设备切换到所述引导小区。
5、 根据权利要求 4所述的方法, 其特征在于, 所述目标基站的真实 目标小区具有至少一个引导小区, 所述确定所述引导小区是否处于工作 状态包括:
根据预先设置的所述真实目标小区的各个引导小区的工作顺序和工 作时间, 确定所述引导小区是否处于工作状态。
6、 根据权利要求 1 -5任一所述的方法, 其特征在于, 所述源基站为 宏基站, 所述目标基站是微基站。
7、 一种小区切换的装置, 其特征在于, 所述装置包括:
接收单元, 用于接收迁移请求消息, 所述迁移请求消息用于指示用 户设备从源基站的源小区要切换到的所述装置的引导小区;
切换单元, 用于根据所述迁移请求消息, 将所述用户设备切换到所 述引导小区;
所述切换单元, 还用于将所述用户设备从所述引导小区切换到所述 装置的真实目标小区;
其中, 所述装置的引导小区是与所述源基站的源小区同频但具有不 同的主扰码的小区; 所述装置的真实目标小区是与所述引导小区异频但 具有相同的主扰码的小区。
8、 根据权利要求 7所述的装置, 其特征在于, 所述接收单元具体用 于:
在与所述装置工作频率通道不同的频率通道上接收所述迁移请求消 息。
9、 根据权利要求 8所述的装置, 其特征在于, 所述切换单元具体用 于:
通过物理信道重配置将所述用户设备从所述引导小区切换到所述装 置的真实目标小区。
10、 根据权利要求 7-9 任一所述的装置, 其特征在于, 所述装置还 包括: 确定单元, 用于所述切换单元根据所述迁移请求消息, 将所述用户 设备切换到所述引导小区之前, 确定所述引导小区是否处于工作状态; 所述切换单元具体用于:
在所述确定单元确定所述引导小区处于工作状态时, 根据所述迁移 请求消息, 将所述用户设备切换到所述引导小区。
11、 根据权利要求 10所述的装置, 其特征在于, 所述装置的真实目 标小区具有至少一个引导小区, 所述确定单元具体用于:
根据预先设置的所述真实目标小区的各个引导小区的工作顺序和工 作时间, 确定所述引导小区是否处于工作状态。
12、 一种目标基站, 其特征在于, 所述目标基站包括:
接收器, 用于接收迁移请求消息, 所述迁移请求消息指示了用户设 备从源基站的源小区要切换到的所述目标基站的引导小区;
切换器, 用于根据所述迁移请求消息, 将所述用户设备切换到所述 引导小区, 并将所述用户设备从所述引导小区切换到所述目标基站的真 实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
13、 根据权利要求 12所述的目标基站, 其特征在于, 所述接收器具 体用于:
在与所述目标基站工作频率通道不同的频率通道上接收所述迁移请 求消息。
14、 根据权利要求 13所述的目标基站, 其特征在于, 所述切换器具 体用于:
通过物理信道重配置将所述用户设备从引导小区切换到所述目标基 站的真实目标小区。
15、 根据权利要求 12-14 任一所述的目标基站, 其特征在于, 所述 目标基站还包括:
处理器, 用于在所述切换器根据所述迁移请求消息, 将所述用户设 备切换到所述引导小区之前, 确定所述引导小区是否处于工作状态; 所述切换器具体用于:
在所述处理器确定所述引导小区处于工作状态时, 根据所述迁移请 求消息, 将所述用户设备切换到所述引导小区。
16、 根据权利要求 15所述的目标基站, 其特征在于, 所述目标基站 的真实目标小区具有至少一个引导小区, 所述处理器具体用于:
根据预先设置的所述真实目标小区的各个引导小区的工作顺序和工 作时间, 确定所述引导小区是否处于工作状态。
17、 一种小区切换的方法, 其特征在于, 所述方法包括:
用户设备接收目标基站发送的物理信道重配置消息, 所述物理信道 重配置消息用于指示所述用户设备要切换到的所述目标基站的真实目标 小区, 所述目标基站的真实目标小区是所述目标基站将所述用户设备从 源基站的源小区切换到所述目标基站的引导小区之后所述用户设备要切 换到的小区;
所述用户设备向所述目标基站发送物理信道重配置完成消息, 并切 换至所述真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
18、 一种用户设备, 其特征在于, 所述用户设备包括:
接收单元, 用于接收目标基站发送的物理信道重配置消息, 所述物 理信道重配置消息用于指示所述用户设备要切换到的所述目标基站的真 实目标小区, 所述目标基站的真实目标小区是所述目标基站将所述用户 设备从源基站的源小区切换到所述目标基站的引导小区之后所述用户设 备要切换到的小区; 发送单元, 用于向所述目标基站发送物理信道重配置完成消息; 切换单元, 用于切换至所述真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
19、 一种用户设备, 其特征在于, 所述用户设备包括:
接收器, 用于接收目标基站发送的物理信道重配置消息, 所述物理 信道重配置消息用于指示所述用户设备要切换到的所述目标基站的真实 目标小区, 所述目标基站的真实目标小区是所述目标基站将所述用户设 备从源基站的源小区切换到所述目标基站的引导小区之后所述用户设备 要切换到的小区;
发送器, 用于向所述目标基站发送物理信道重配置完成消息, 切换器, 用于切换至所述真实目标小区;
其中, 所述目标基站的引导小区是与所述源基站的源小区同频但具 有不同的主扰码的小区; 所述目标基站的真实目标小区是与所述引导小 区异频但具有相同的主扰码的小区。
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