WO2014100999A1

WO2014100999A1 - Sector selection method during cell handover and base station controller

Info

Publication number: WO2014100999A1
Application number: PCT/CN2012/087518
Authority: WO
Inventors: 王志伟; 刘敬全; 刘玲; 杜长龙
Original assignee: 华为技术有限公司
Priority date: 2012-12-26
Filing date: 2012-12-26
Publication date: 2014-07-03
Also published as: CN103229549A; CN103229549B

Abstract

Provided in an embodiment of the present invention are a sector selection method during cell handover and a base station controller, the method comprising: determining a first sector, the first sector being a sector in the serving cell of a user equipment (UE) and a sector that the UE is currently in; determining a neighboring sector of the first sector, and determining whether the neighboring sector is the sector of a target cell that the UE will hand over into, the target cell being the neighboring cell of the serving cell; activating the remote radio unit (RRU) or radio frequency unit (RFU) of at least one second sector according to the determination result, such that the RRU or RFU of the at least one second sector transmits information to the UE, the at least one second sector being a sector in the target cell. The present invention effectively improves resource utilization rate while ensuring the receiving quality of a UE, thus reducing the interference on a neighboring cell of the same frequency.

Description

Method for sector selection and base station controller in cell handover

Embodiments of the present invention relate to the field of communications technologies, and more particularly, to a method of sector selection and a base station controller for cell handover. Background technique

In a multi-sector networking architecture, a cell may be composed of one or more base stations, each of which has multiple sectors, each sector corresponding to one RRU (Radio Remote Unit) or RFU. (Radio Frequency Unit, RF unit).

In the prior art, when the user equipment (User Equipment) is switched from the serving cell to the target cell during the movement of the multi-sector networking architecture, the target cell does not know which sector the user equipment is currently switching to. In order to ensure the receiving quality of the user equipment, the RRU or RFU of all sectors of the target cell exchange information with the UE, for example, send information such as service data or control signaling to the UE. Therefore, more channel resources are occupied, resulting in waste of resources and greater interference to adjacent cells of the same frequency. Summary of the invention

The embodiments of the present invention provide a method and a device for selecting a sector during cell handover, which can effectively improve resource utilization and reduce interference to adjacent cells in the same frequency.

In a first aspect, a method for sector selection in cell handover is provided, the method comprising: determining a first sector, where the first sector is a sector in a serving cell of a user equipment and is current for the user equipment a sector in which the first sector is determined, and determining whether the neighboring sector is a sector in a target cell that is switched by the user equipment, where the target cell is the serving cell a neighboring cell; a radio remote unit RRU or a radio unit RFU of the at least one second sector is activated according to the result of the judgment, so that the RRU or RFU of the at least one second sector sends information to the user equipment, At least one second sector is a sector in the target cell.

With reference to the first aspect, in a first possible implementation, the activating the RRU or the RFU of the at least one second sector according to the result of the determining may be: if the neighboring of the first sector is determined The sector is a sector in the target cell, and the adjacent sector is used as the second sector. With reference to the first aspect, in a second possible implementation, the activating the RRU or the RFU of the at least one second sector according to the result of the determining, the specific implementation may be: if the entire phase of the first sector is determined The neighboring sectors are not sectors in the target cell; then all sectors in the target cell are used as the second sector.

With reference to the first aspect, or the first possible implementation manner of the first aspect, or the second possible implementation manner, in a third possible implementation manner, the determining the adjacent sector of the first sector, And determining whether the adjacent sector is a sector in the target cell, the specific implementation may be: determining a neighboring sector of the first sector by searching a neighboring sector list, and determining the adjacent sector one by one Whether it is a sector in the target cell; wherein the neighbor sector list includes information of a sector in the serving cell and information of a sector in the target cell.

With reference to the first aspect or the first possible implementation manner of the first aspect to the third possible implementation manner, in the fourth possible implementation manner, the determining the first sector, the specific implementation The method may be: determining the first sector according to measurement information of an uplink channel sent by an RRU or an RFU of the first sector.

In a second aspect, a base station controller is provided, where the base station controller includes: a determining unit, configured to determine a first sector, where the first sector is a sector in a serving cell of a user equipment, and is the user a sector in which the device is currently located, is used to determine a neighboring sector of the first sector, and a determining unit, configured to determine whether the neighboring sector is a sector in a target cell that is switched by the user equipment, The target cell is a neighboring cell of the serving cell, and the activation unit is configured to activate the radio remote unit RRU or the radio unit RFU of the at least one second sector according to the result of the determining, so that the at least one second sector The RRU or RFU sends information to the user equipment, and the at least one second sector is a sector in the target cell.

With reference to the second aspect, in a first possible implementation, the activating unit is specifically configured to: if it is determined that a neighboring sector of the first sector is a sector in the target cell, The adjacent sector is referred to as the second sector.

With reference to the second aspect, in a second possible implementation, the activating unit is specifically configured to: if all the neighboring sectors of the first sector are not sectors in the target cell; All sectors in the target cell are referred to as the second sector.

With reference to the second aspect or the first possible implementation manner or the second possible implementation manner of the second aspect, in a third possible implementation, the specific implementation may be: the determining unit is specifically configured to: And determining, by the neighboring sector list, an adjacent sector of the first sector; The method is: determining, by searching a neighboring sector list, whether the neighboring sector is a sector in a target cell, where the neighboring sector list includes information of a sector in the serving cell and the target Information about the sectors in the cell.

With reference to the second aspect or the first possible implementation manner of the second aspect to the third possible implementation manner, in a fourth possible implementation manner, the specific implementation may be: The method is: determining the first sector according to measurement information of an uplink channel sent by an RRU or an RFU of the first sector.

In the embodiment of the present invention, the base station controller determines the neighboring sector of the first sector by determining the first sector where the user equipment is currently located, and determines whether the adjacent sector is a sector in the target cell of the user equipment handover, where The first sector is a sector in the serving cell of the user equipment, and the target cell is a neighboring cell of the serving cell, and the RRU or the RFU of the at least one second sector is activated according to the result of the judgment, and the at least one second sector is the target. A sector in a cell, which transmits information to the user equipment by the RRU or RFU of the activated at least one second sector. In this way, under the condition of ensuring the receiving quality of the user equipment, the resource utilization rate can be effectively improved, and interference caused to neighboring cells in the same frequency can be reduced. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

FIG. 1 is a schematic diagram of an application scenario applicable to an embodiment of the present invention.

2 is a flow chart of a method for sector selection during cell handover according to an embodiment of the present invention. 3 is a schematic flow chart showing the procedure of a method for sector selection at the time of cell handover according to an embodiment of the present invention.

4 is a block diagram showing the structure of a base station controller according to an embodiment of the present invention.

Figure 5 is a schematic block diagram of a base station controller in accordance with another embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, instead of All embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The technical solution of the embodiment of the present invention can be applied to various communication systems, for example, a Global System of Mobile communication ("GSM") system, and a code division multiple access (Code Division Multiple Access) CDMA") system, Wideband Code Division Multiple Access ("WCDMA") system, General Packet Radio Service ("General Packet Radio Service"), Long Term Evolution (Long Term Evolution) , the tube is called "LTE" system, LTE frequency division duplex ("Fludency Division Duplex") system, LTE time division duplex (Time Division Duplex, "TDD"), universal mobile communication system (Universal Mobile Telecommunication System, called "UMTS"), Worldwide Interoperability for Microwave Access (Wireless Fidelity), or Wireless Fidelity ("Wireless Fidelity") Wait.

A user equipment (UE, User Equipment), which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network). The user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle, The wireless access network exchanges voice and/or data.

The base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. The invention is not limited thereto.

The base station controller may be a base station controller (BSC, Base Station Controller) in GSM or CDMA, or may be a radio network controller (RNC, Radio Network Controller) in WCDMA, or may be combined with an evolved base station in LTE ( In the eNB or the e-NodeB (evolutional Node B), the present invention is not limited, but for convenience of description, the following embodiments are described by taking the BSC as an example.

FIG. 1 is a schematic diagram of an application scenario applicable to an embodiment of the present invention. In the scenario of FIG. 1, nine cells are depicted, each cell consisting of four base stations, and each base station has three sectors. For example, in the cell 101, four base stations are formed, respectively. Base station 120, base station 130 and base station 140, each base station includes 3 sectors, such as base station 140 including sector D, sector E and fan District S. Each sector corresponds to one RRU (Radio Remote Unit) or RFU (Radio Frequency Unit). It should be understood that the number of cells in the scenario of FIG. 1 , the number of base stations under one cell, and the number of sectors included in each base station are merely exemplary, which is not limited by the embodiment of the present invention. For example, one cell may include One or more base stations, different cells may be composed of different numbers of base stations, or different base stations including the number of sectors may be the same or different. and many more.

In the scenario of FIG. 1 , the UE 11 needs to switch from the current serving cell of the UE 11 to the cell 109 in the moving process of the multi-sector networking architecture, that is, the cell 109 is the target cell for the UE 11 handover, and Cell 109 is a neighboring cell of cell 101, and UE 11 is currently located in sector S below base station 140. In the prior art, the cell 109 does not know which sector the user equipment is currently switching to. In order to ensure the reception quality of the user equipment, the RRU or RFU of all sectors of the cell 109 exchange information with the UE, for example, in the service. The channel on the carrier frequency transmits information such as service data or control signaling to the UE. Therefore, more channel resources are occupied, resulting in waste of resources and greater interference to neighboring cells in the same frequency. It should be understood that the number of the UEs may be one or more, which is not limited by the embodiment of the present invention. It should also be understood that the sector in which the UE is located is not limited in the embodiment of the present invention.

In order to solve the above problem, the embodiments of the present invention provide a method and a device for selecting a sector during cell handover, which can effectively improve resource utilization and reduce interference to adjacent cells in the same frequency.

2 is a flow chart of a method for sector selection during cell handover according to an embodiment of the present invention. The method of Figure 2 is performed by a base station controller (e.g., BSC).

201. Determine a first sector, where the first sector is a sector in a serving cell of the user equipment and is a sector in which the user equipment is currently located.

202. Determine a neighboring sector of the first sector, and determine whether the neighboring sector is a sector in a target cell that is switched by the user equipment, where the target cell is a neighboring cell of the serving cell.

203. Activate an RRU or an RFU of the at least one second sector according to the result of the judgment, so that the RRU or the RFU of the at least one second sector sends information to the user equipment, where the at least one second sector is a sector in the target cell.

Through the foregoing solution, the base station controller determines the neighboring sector of the first sector by determining the first sector where the UE is currently located, and determines whether the adjacent sector is a sector in the target cell of the UE handover, The first sector is a sector in the serving cell of the UE, and the target cell is a neighboring cell of the serving cell, and the RRU or the RFU of the at least one second sector is activated according to the result of the judgment, and the at least one second sector is the target. A sector in a cell, the information is transmitted to the UE by the RRU or RFU of the activated at least one second sector. In this way, under the condition of ensuring the receiving quality of the UE, the resource utilization rate can be effectively improved, and interference caused to neighboring cells in the same frequency can be reduced.

Optionally, as an embodiment, in step 203, in an implementation manner, if it is determined that the adjacent sector of the first sector is a sector in the target cell, the adjacent sector is used as the second Sector. Taking the scenario of FIG. 1 as an example, the sector S in which the UE 11 is currently located is the first sector, and the neighboring cell determining the sector S has the sector A, the sector B, the sector C, the sector D, and the sector. The area E and the sector F determine whether the neighboring cell of the sector S is the sector of the cell 109, wherein the sector F is the sector of the cell 109, and the base station controller of the cell 109 activates the RRU or RFU of the sector F. Therefore, information is transmitted only to the UE by the RRU or RFU of the sector F in the cell 109, and the sector F is the adjacent sector of the sector S in which the UE 11 is located, thereby eliminating the need for RRUs or RFUs of all sectors in the cell 109. All the channel resources are used to send information to the UE. In this way, the resource utilization can be effectively improved under the condition of ensuring the reception quality of the UE. If there are adjacent cells in the same frequency, the neighboring cells in the same frequency can be reduced. interference. When a plurality of sectors in a neighboring sector of the first sector are sectors in the target cell, at least one of the plurality of sectors may be the second sector, and preferably, the plurality of sectors Each sector is used as the second sector described above.

In another implementation manner, if it is determined that all neighboring sectors of the first sector are not sectors in the target cell; then all sectors in the target cell are used as the second sector. For example, in the scenario of FIG. 1, it is assumed that the UE 11 needs to switch from the serving cell of the UE 11 to the cell 101 to the cell 109, the sector in which the UE is currently located is the sector D, and the adjacent sector of the sector D is the cell 108. The cells in the cell 107 and the cell 101 are not the sectors in the cell 109. In order to ensure the reception quality of the UE 11, the base station controller of the cell 109 activates all sectors in the cell 109 to be the second sector. The RRU or RFU of all sectors in the cell 109 occupy channel resources to send information to the UE.

It should be understood that the number of second sectors is not limited in the embodiment of the present invention. The number of second sectors may be one or more.

Optionally, as another embodiment, in step 202, the base station controller of the target cell may determine neighboring sectors of the first sector by searching a neighboring sector list, and determine whether the adjacent sectors are target cells one by one. a sector in which the neighbor sector list includes information of a sector in the serving cell and information of a sector in the target cell. For example, the base station controller of the target cell is preset with a neighboring sector column The table, the neighbor sector list may include information of a sector in the target cell and information of a sector in a neighboring cell (including the serving cell) of the target cell, after the base station controller of the target cell determines the first sector Finding information of a sector adjacent to the first sector (such as an identifier of the sector) in the neighboring sector list, determining an adjacent sector of the first sector, and further, passing the adjacent sector of the first sector Whether the information of the area corresponds to the information of the sector in the target cell determines whether the adjacent sector is a sector in the target cell.

Optionally, as another embodiment, in step 201, the base station controller may determine the first sector according to the measurement information of the uplink channel sent by the RRU or RFU of the first sector. Specifically, the RRU or RFU of the first sector measures the received signal of the uplink channel, and obtains measurement information (eg, level value, power, and/or quality of the received signal, etc.), the base station controller and the target cell in the serving cell. Different base station controllers, the RRU or RFU of the first sector sends measurement information to the base station controller of the serving cell, and the base station controller of the serving cell sends the measurement information to the base station controller of the target cell; or In the case where the base station controller of the serving cell and the base station controller of the target cell are the same base station controller, the RRU or RFU of the first sector directly transmits the measurement information to the base station controller of the target cell. The base station controller of the target cell can determine the current location of the UE according to the measurement information. For example, the base station controller of the target cell receives the measurement information of the uplink channel of the UE sent by multiple sectors, and finds the UE sent by a certain sector. The quality of the received signal in the measurement information of the uplink channel is the best, and the sector is determined to be the first sector, that is, the sector in which the UE is currently located.

Embodiments of the present invention are described in detail below with reference to the example of FIG.

3 is a schematic flow chart showing the procedure of a method for sector selection at the time of cell handover according to an embodiment of the present invention. The method of Figure 3 is performed by a base station controller.

301. The base station controller of the target cell determines the first sector.

Optionally, the base station controller of the target cell receives the measurement information of the uplink channel sent by the RRU or the RFU of the first sector to determine the first sector. The specific example is as described above, and details are not described herein again.

In addition, before step 301, the base station controller of the target cell performs channel allocation of the UE handover. Preferably, if the UE is switched to the channel on the service carrier frequency, step 301 is performed.

302. The base station controller of the target cell determines an adjacent sector of the first sector.

303. The base station controller of the target cell determines, by one, whether the adjacent sector of the first sector is a sector in the target cell.

Optionally, the base station controller of the target cell may determine the first sector by searching the neighbor sector list. The adjacent sectors are judged one by one whether the adjacent sectors are sectors in the target cell; wherein the neighbor sector list includes information of sectors in the serving cell and information of sectors in the target cell. For example, the base station controller of the target cell is preset with a neighbor sector list, and the neighbor sector list may include information of sectors in the target cell and sectors in some or all neighboring cells (including the serving cell) of the target cell. Information, after the base station controller of the target cell determines the first sector, searches for information of the sector adjacent to the first sector (such as the identifier of the sector) in the neighbor sector list, and determines the first sector The adjacent sector further determines whether the adjacent sector is a sector in the target cell by whether the information of the adjacent sector of the first sector corresponds to the information of the sector in the target cell.

After performing step 303, it is determined in step 305 whether all adjacent sectors have been judged one by one to determine whether it is a sector of the target cell. If all adjacent sectors have been judged, then all adjacent sectors are In the case of a sector that is not the target cell (step 306), the RRU or RFU of all sectors in the target cell is activated (ie, step 307 is performed), and if there are still neighboring sectors that have not been judged, step 303 is performed.

In step 303, if it is determined that the adjacent sector of the first sector is a sector in the target cell, and the adjacent sector is the second sector, the RRU or RFU of the adjacent sector may be activated (ie, performing Step 304). The scenario of FIG. 1 is taken as an example for description. It is assumed that the UE 11 needs to switch from the serving cell of the UE 11 to the cell 101, the sector in which the UE is currently located is the sector E, and the adjacent sector of the sector E is determined to have a fan. Area G, sector F, sector S, sector D, sector I and sector H. It is judged whether or not the sector G is a sector in the cell 109, and the result of the judgment is that the sector G is a sector in the cell 109. The base station controller of cell 109 then activates the RRU or RFU of sector G. After all neighboring sectors perform a process of determining whether it is a sector of the target cell, sector F and sector G are sectors of cell 109, sector F and sector G are second sectors, cell 109 The base station controller activates the RRU or RFU of sector F and sector G. Alternatively, the RRU or RFU of sector F and sector G transmit traffic data (eg, voice data) or control to the UE on the channel on the service carrier frequency. Signaling and other information.

Therefore, the RRU or RFU of all the sectors in the cell 109 are not required to occupy the channel resource direction.

The UE sends information, so that the resource utilization can be effectively improved under the condition of ensuring the reception quality of the UE. If there are adjacent cells in the same frequency, the interference to the adjacent cells in the same frequency can be reduced.

4 is a block diagram showing the structure of a base station controller according to an embodiment of the present invention. The base station controller of Fig. 4 includes a determining unit 401, a determining unit 4502, and an activating unit 403.

a determining unit 401, configured to determine a first sector, where the first sector is a fan in a serving cell of the UE The area is the sector in which the UE is currently located, and is used to determine the adjacent sector of the first sector.

The determining unit 402 is configured to determine whether the neighboring sector is a sector in a target cell that is UE-switched, and the target cell is a neighboring cell of the serving cell.

The activation unit 403 is configured to activate, according to the result of the determining, the RRU or the RFU of the at least one second sector, so that the RRU or the RFU of the at least one second sector sends information to the UE, where the at least one second sector is a fan in the target cell. Area.

In the embodiment of the present invention, the base station controller determines the neighboring sector of the first sector by determining the first sector where the user equipment is currently located, and determines whether the adjacent sector is a sector in the target cell that is switched by the user equipment. The first sector is a sector in the serving cell of the user equipment, and the target cell is a neighboring cell of the serving cell, and the RRU or RFU of the at least one second sector is activated according to the result of the determining, at least one second sector. For a sector in the target cell, information is transmitted to the user equipment by the RRU or RFU of the activated at least one second sector. In this way, under the condition of ensuring the receiving quality of the user equipment, the resource utilization rate can be effectively improved, and interference caused to neighboring cells in the same frequency can be reduced.

The base station controller 400 can implement the operations of the base station controller in the embodiments of Figures 1 through 3, and therefore will not be described in detail to avoid repetition.

Optionally, as an embodiment, in an implementation manner, the activation unit 403 is specifically configured to: if it is determined that a neighboring sector of the first sector is a sector in the target cell, use the adjacent sector as Second sector. In another implementation manner, the activation unit 403 is specifically configured to: if it is determined that all neighboring sectors of the first sector are not sectors in the target cell, use all sectors in the target cell as the second fan. Area.

Optionally, as another embodiment, the determining unit 401 is specifically configured to: determine, by searching a neighboring sector list, an adjacent sector of the first sector. The determining unit 402 is specifically configured to: determine whether the adjacent sector is a sector in the target cell one by one by searching the neighboring sector list. The neighbor sector list includes information of sectors in the serving cell and information of sectors in the target cell.

Optionally, as another embodiment, the determining unit 401 is specifically configured to: according to the first sector

The measurement information of the uplink channel transmitted by the RRU or RFU determines the first sector. Example. FIG. 5 is a structural block diagram of a base station controller according to another embodiment of the present invention. In this embodiment, the device 500 includes a processor 501, a memory 502, a transmitter 503, and a receiver 504. The processor 501 controls the operation of the device 500, which may also be referred to as a CPU (Central Processing Unit). The memory 502 can include a read only memory and a random access memory. Instructions and data are provided to processor 501. A portion of memory 502 may also include non-volatile line random access memory (NVRAM). The processor 501, the memory 502, the transmitter 503 and the receiver 504 are coupled together by a bus system 510, wherein the bus system 510 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 510 in the figure.

The above-described device 500 can be applied to the method disclosed in the above embodiments of the present invention. The processor 501 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 501 or an instruction in the form of software. The processor 501 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; or a digital signal processing (DSP), dedicated Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The methods, steps, and logic blocks disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The processor 501 is configured to determine a first sector, where the first sector is a sector in the serving cell of the UE and is a sector where the UE is currently located, and is used to determine an adjacent sector of the first sector, where the processor 501 further For determining whether the adjacent sector is a sector in the target cell of the UE handover, the target cell is a neighboring cell of the serving cell, and the processor 501 is further configured to activate the RRU of the at least one second sector according to the result of the determination. The RFU, so that the RRU or RFU of the at least one second sector transmits information to the UE, and the at least one second sector is a sector in the target cell.

In the embodiment of the present invention, the base station controller determines the neighboring sector of the first sector by determining the first sector where the user equipment is currently located, and determines whether the adjacent sector is a sector in the target cell that is switched by the user equipment. The first sector is a sector in the serving cell of the user equipment, and the target cell is a neighboring cell of the serving cell, and the RRU or the RFU of the at least one second sector is activated according to the result of the determining, and the at least one second sector is A sector in the target cell transmits information to the user equipment by the RRU or RFU of the activated at least one second sector. In this way, under the condition of ensuring the receiving quality of the user equipment, the resource utilization rate can be effectively improved, and interference caused to neighboring cells in the same frequency can be reduced.

The base station controller 500 can implement the operations related to the base station controller in the embodiments of FIGS. 1 through 3, and thus will not be described in detail to avoid repetition. Optionally, as an embodiment, in an implementation, the processor 501 is specifically configured to: if it is determined that a neighboring sector of the first sector is a sector in the target cell, use the adjacent sector as The second sector activates the RRU or RFU of the second sector. In another implementation manner, the processor 501 is specifically configured to: if it is determined that all neighboring sectors of the first sector are not sectors in the target cell, use all sectors in the target cell as the second fan. Zone, activates the RRU or RFU of all sectors in the target cell.

Optionally, as another embodiment, the processor 501 is specifically configured to: determine, by searching a list of neighboring sectors, adjacent sectors of the first sector. The processor 501 is specifically configured to: determine, by searching the neighbor sector list, whether the adjacent sector is a sector in the target cell. The neighbor sector list includes information of sectors in the serving cell and information of sectors in the target cell.

Optionally, in another embodiment, the processor 501 is specifically configured to: determine the first sector according to the measurement information of the uplink channel sent by the RRU or the RFU of the first sector.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in a combination of electronic hardware or computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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.

Claims

Rights request

1. A method for sector selection during cell handover, which is characterized by including:

Determine the first sector, which is a sector in the serving cell of the user equipment and is the sector where the user equipment is currently located;

Determine adjacent sectors of the first sector, and determine whether the adjacent sectors are sectors in the target cell for handover by the user equipment, and the target cell is an adjacent cell of the serving cell; Activate the radio frequency remote unit RRU or radio frequency unit RFU of at least one second sector according to the judgment result, so that the RRU or RFU of the at least one second sector sends information to the user equipment, and the at least one second sector A zone is a sector in the target cell.

2. The method according to claim 1, characterized in that activating the RRU or RFU of at least one second sector according to the judgment result includes:

If it is determined that the adjacent sectors of the first sector are sectors in the target cell, the adjacent sectors are used as the second sectors.

3. The method of claim 1, wherein activating the RRU or RFU of at least one second sector according to the judgment result includes:

If it is determined that all adjacent sectors of the first sector are not sectors in the target cell; then all sectors in the target cell are used as the second sectors.

4. The method according to any one of claims 1 to 3, characterized in that: determining adjacent sectors of the first sector, and determining whether the adjacent sectors are sectors in the target cell. area, including: determining adjacent sectors of the first sector by searching a neighbor sector list, and determining whether the adjacent sectors are sectors in the target cell one by one;

Wherein, the neighbor sector list includes information about sectors in the serving cell and information about sectors in the target cell.

5. The method according to any one of claims 1 to 4, characterized in that determining the first sector includes:

The first sector is determined based on the measurement information of the uplink channel sent by the RRU or RFU of the first sector.

6. A base station controller, characterized by including:

Determining unit, used to determine the first sector, the first sector is a sector in the serving cell of the user equipment and is the sector where the user equipment is currently located, and used to determine the relative position of the first sector. neighbor fan district;

A judging unit, configured to judge whether the adjacent sector is a sector in the target cell for handover by the user equipment, and the target cell is an adjacent cell of the serving cell;

An activation unit, configured to activate the radio frequency remote unit RRU or radio frequency unit RFU of at least one second sector according to the judgment result, so that the RRU or RFU of the at least one second sector sends information to the user equipment, At least one second sector is a sector in the target cell.

7. The base station controller as claimed in claim 6, characterized in that,

The activation unit is specifically configured to: if it is determined that an adjacent sector of the first sector is a sector in the target cell, use the adjacent sector as the second sector.

8. The base station controller as claimed in claim 6, characterized in that,

The activation unit is specifically configured to: if all adjacent sectors of the first sector are not sectors in the target cell; then use all sectors in the target cell as the second sector. .

9. The base station controller according to any one of claims 6-8, characterized in that,

The determining unit is specifically configured to: determine the adjacent sectors of the first sector by searching the adjacent sector list;

The determination unit is specifically configured to: determine whether the adjacent sectors are sectors in the target cell one by one by searching the adjacent sector list;

10. The base station controller according to any one of claims 6 to 9, wherein the determining unit is specifically configured to: determine the uplink channel based on the measurement information of the uplink channel sent by the RRU or RFU of the first sector. Describe the first sector.