CN109479218A

CN109479218A - Communication handover method, user equipment and base station

Info

Publication number: CN109479218A
Application number: CN201680084561.1A
Authority: CN
Inventors: 侯云; 招溢利
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2016-04-13
Filing date: 2016-04-13
Publication date: 2019-03-15
Anticipated expiration: 2036-04-13
Also published as: CN109479218B; WO2017177402A1

Abstract

The invention discloses a kind of communication handover methods to obtain measurement result this method comprises: user equipment measures candidate virtual cell and candidate transport point, and wherein virtual subdistrict includes the transfer point of multiple shared Physical Cell Identifier；User equipment selection target virtual subdistrict and object transmission point from candidate virtual cell and candidate transport point according to measurement result；User equipment accesses destination virtual cell and object transmission point.The invention also discloses a kind of user equipment and base stations.By the above-mentioned means, the present invention can realize the double-deck switching of physical layer and virtual level when user equipment switches to virtual subdistrict.

Description

Communication handover method, user equipment and base station

Technical field

The present invention relates to the communications fields, more particularly to a kind of communication handover method, user equipment and base station.

Background technique

In today that communication system is grown rapidly, in order to meet the mobile service and data volume demand of explosive growth, surpass High density network (Ultra Dense Network, UDN) is as being effectively improved the effective of network throughput and the level of resources utilization Means are expected to one of the networking mode as future 5G.The Microcell that dense deployment is used in UDN is promoting network capacity Meanwhile excessive switching is generated when may cause user equipment (User Equipment, UE) movement, increase the energy consumption of UE and disappears Internet resources are consumed, user experience is influenced.

Cell virtual (Cell Virtualization) technology is proposed in order to solve the above problem.It wraps in the art Include two-tier network: virtual level and physical layer network.One virtual subdistrict (Virtual Cell, VC) includes that multiple shared physics are small Area identifies the transfer point (Transmission Point, TP) of (Physical Cell Identifier, PCI).VC is corresponding empty Quasi- layer network is responsible for control plane, realizes biggish coverage area；TP corresponds to physical layer network, be responsible for user plane, for UE transmits user data.UE does not need to switch over (Handover, HO) when moving in same VC.In general UE connection is most Close TP is to obtain higher data throughout.

When UE crosses over the coverage area of different virtual subdistricts, need to switch between different virtual subdistricts.UE at this time It to be not only switched to new VC on virtual level, also to connect new TP on a physical layer, needs to carry out the double-deck measurement and selection. And switching in the prior art is only to be switched to Target cell from current area, only carries out one layer of measurement and selection, Wu Fashi Switching between existing virtual subdistrict.

Summary of the invention

The invention mainly solves the technical problem of providing a kind of communication handover method, user equipment and base stations, can solve It certainly cannot achieve the problem of switching between virtual subdistrict in the prior art.

In order to solve the above-mentioned technical problem, one technical scheme adopted by the invention is that: a kind of communication handover method is provided, Include: that user equipment measures candidate virtual cell and candidate transport point, obtains measurement result, wherein virtual subdistrict includes The transfer point of multiple shared Physical Cell Identifier；User equipment is according to measurement result from candidate virtual cell and candidate transport point Selection target virtual subdistrict and object transmission point；User equipment accesses destination virtual cell and object transmission point.

Wherein, user equipment measures candidate virtual cell and candidate transport point, obtains measurement result, and according to Measurement result selection target virtual subdistrict and object transmission point from candidate virtual cell and candidate transport point include: user equipment Candidate virtual cell is measured, virtual subdistrict measurement result is obtained；User equipment is according to virtual subdistrict measurement result from time Select selection target virtual subdistrict in virtual subdistrict；User equipment measures the candidate transport point in destination virtual cell, obtains To transfer point measurement result；User equipment selects mesh from the candidate transport point of destination virtual cell according to transfer point measurement result Mark transfer point.

Wherein, it includes: that user equipment is being connected to current virtual cell that user equipment, which measures candidate virtual cell, Edge transfer point when, candidate virtual cell is measured.

Wherein, it includes: that user equipment is being connected to current virtual cell that user equipment, which measures candidate virtual cell, Edge transfer point when, the adjacent virtual subdistrict of edge transfer point of user equipment connection is measured.

Wherein, according to virtual subdistrict measurement result after selection target virtual subdistrict in candidate virtual cell, Yong Hushe Standby measure to the candidate transport point in destination virtual cell further comprises before: user equipment believes destination virtual cell Breath is sent to the base station of current area；The base station that user equipment receives current area is sent according to destination virtual cell information The candidate transport point measurement configuration information of destination virtual cell.

Wherein, the candidate transport point measurement configuration information of destination virtual cell includes the edge transmission in destination virtual cell Point set, user equipment measure edge transfer point according to set, wherein the base station that set is destination virtual cell is sent To the base station of current area.

It wherein, include the transfer point of at least one closing, the candidate transport point measuring configuration of destination virtual cell in set Information further comprises discovery reference signal timing information, and discovery reference signal timing information indicates that the transfer point closed sends hair Referring now to the time of signal.

Wherein, it includes: that user equipment receives the small of candidate virtual cell that user equipment, which measures candidate virtual cell, Area's reference signal detects the signal strength and/or signal quality of the cell reference signals of candidate virtual cell, wherein waiting Select the cell reference signals of virtual subdistrict by all unlatchings in candidate virtual cell transfer point send reference signal polymerization and It obtains.

In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of communication switching side Method, comprising: base station sends the measurement configuration information of candidate virtual cell and the measuring configuration letter of candidate transport point to user equipment Breath, so that user equipment is according to candidate virtual community configured information and candidate transport point configuration information, to candidate virtual cell It is measured with candidate transport point, and then selection target virtual subdistrict and target pass from candidate virtual cell and candidate transport point Defeated, wherein virtual subdistrict includes the transfer point of multiple shared Physical Cell Identifier；Assist user equipment access target empty in base station Quasi- cell and object transmission point.

Wherein, the measurement of base station sends measurement configuration information from candidate virtual cell to user equipment and candidate transport point is matched Confidence breath, so that user equipment is according to candidate virtual community configured information and candidate transport point configuration information, to candidate virtual Cell and candidate transport point measure, and then selection target virtual subdistrict and mesh from candidate virtual cell and candidate transport point Mark transfer point includes: that candidate virtual cell measurement configuration information is sent to user equipment by base station so that user equipment according to Candidate virtual cell measurement configuration information measures candidate virtual cell, virtual subdistrict measurement result is obtained, according to virtual Cell measurement results selection target virtual subdistrict from candidate virtual cell；It is small that base station receives the destination virtual that user equipment is sent Area's information；The candidate transport point measurement configuration information of destination virtual cell is sent to use according to destination virtual cell information by base station Family equipment, so that user equipment clicks through the candidate transport in destination virtual cell according to candidate transport point measurement configuration information Row measurement, obtains transfer point measurement result, is selected from the candidate transport point of destination virtual cell according to transfer point measurement result Object transmission point；Base station receives the object transmission point information that user equipment is sent.

Wherein, it includes: base station in user equipment that candidate virtual cell measurement configuration information is sent to user equipment by base station Candidate virtual cell measurement configuration information user is sent to when being connected to the edge transfer point of the corresponding virtual subdistrict in base station to set It is standby.

It wherein, include adjacent virtual of edge transfer point of user equipment connection in candidate virtual cell measurement configuration information Cell information.

Wherein, the candidate transport point measurement configuration information of destination virtual cell includes the edge transmission in destination virtual cell Point set, wherein set be base station from destination virtual cell base station it is received.

It wherein, include the transfer point of at least one closing, the candidate transport point measuring configuration of destination virtual cell in set Information further comprises discovery reference signal timing information, and discovery reference signal is the reference signal that the transfer point closed is sent, It was found that reference signal timing information indicates that the transfer point closed sends the time of discovery reference signal.

Wherein, user equipment access destination virtual cell is assisted in base station and object transmission point includes: base station to destination virtual Switching request is initiated in the base station of cell, and object transmission point information is sent to the base station of destination virtual cell.

In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of user equipment, wraps Include: measurement module obtains measurement result, wherein virtual subdistrict for measuring to candidate virtual cell and candidate transport point Transfer point including multiple shared Physical Cell Identifier；Selecting module, for according to measurement result from candidate virtual cell and time Select selection target virtual subdistrict and object transmission point in transfer point；AM access module is passed for accessing destination virtual cell and target Defeated point.

Wherein, measurement module includes: virtual subdistrict measuring unit, for measuring to candidate virtual cell, obtains void Quasi- cell measurement results；Transfer point measuring unit is passed for measuring to the candidate transport point in destination virtual cell Defeated measurement result；Selecting module includes: virtual subdistrict selecting unit, for according to virtual subdistrict measurement result from candidate virtual Selection target virtual subdistrict in cell；Transfer point selecting unit, for according to transfer point measurement result from destination virtual cell Selection target transfer point in candidate transport point.

Wherein, virtual subdistrict measuring unit is used for when user equipment is connected to the edge transfer point of current virtual cell, The virtual subdistrict adjacent to the edge transfer point of user equipment connection measures.

Wherein, user equipment further comprises: sending module, for destination virtual cell information to be sent to current area Base station；Receiving module, the destination virtual cell that the base station for receiving current area is sent according to destination virtual cell information Candidate transport point measurement configuration information.

In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of base station, comprising: Configuration module, for user equipment send candidate virtual cell, candidate transport point configuration information so that user equipment according to Candidate virtual cell, candidate transport point configuration information, measure candidate virtual cell and candidate transport point, and then from candidate Selection target virtual subdistrict and object transmission point in virtual subdistrict and candidate transport point, wherein virtual subdistrict includes multiple shared objects Manage the transfer point of cell ID；Switching module, for assisting user equipment access destination virtual cell and object transmission point.

Wherein, configuration module includes: the first transmission unit, for candidate virtual cell measurement configuration information to be sent to use Family equipment obtains so that user equipment measures candidate virtual cell according to candidate virtual cell measurement configuration information Virtual subdistrict measurement result, according to virtual subdistrict measurement result from candidate virtual cell selection target virtual subdistrict；First connects Unit is received, for receiving the destination virtual cell information of user equipment transmission；Second transmission unit, for small according to destination virtual The candidate transport point measurement configuration information of destination virtual cell is sent to user equipment by area's information so that user equipment according to Candidate transport point measurement configuration information measures the candidate transport point in destination virtual cell, obtains transfer point measurement knot Fruit, according to transfer point measurement result from the candidate transport point of destination virtual cell selection target transfer point；Second receiving unit, For receiving the object transmission point information of user equipment transmission.

Wherein, the first transmission unit is used for when user equipment is connected to the edge transfer point of the corresponding virtual subdistrict in base station Candidate virtual cell measurement configuration information is sent to user equipment.

Wherein, switching module is used to initiate switching request to the base station of destination virtual cell, and by object transmission point information It is sent to the base station of destination virtual cell.

In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of user equipment, wraps It includes: processor and telecommunication circuit, processor connection communication circuit；Processor be used for through telecommunication circuit to candidate virtual cell and Candidate transport point measures, and obtains measurement result, and wherein virtual subdistrict includes the transfer point of multiple shared Physical Cell Identifier； According to measurement result from candidate virtual cell and candidate transport point selection target virtual subdistrict and object transmission point；Access target Virtual subdistrict and object transmission point.

Wherein, processor obtains virtual subdistrict measurement knot for measuring by telecommunication circuit to candidate virtual cell Fruit；According to virtual subdistrict measurement result from candidate virtual cell selection target virtual subdistrict；It is by telecommunication circuit that target is empty Quasi- cell information is sent to the base station of current area；The base station of current area is received according to destination virtual cell by telecommunication circuit Information and the candidate transport point measurement configuration information of destination virtual cell sent, according to the candidate transport of destination virtual cell point Measurement configuration information measures the candidate transport point in destination virtual cell, obtains transfer point measurement result；According to transmission Point measurement result selection target transfer point from the candidate transport point of destination virtual cell.

Wherein, processor is used for when user equipment is connected to the edge transfer point of current virtual cell, passes through communication electricity Road measures candidate virtual cell.

Wherein, processor is used for when user equipment is connected to the edge transfer point of current virtual cell, passes through communication electricity Road measures the neighboring candidate virtual subdistrict for the edge transfer point that user equipment connects.

Wherein, processor is used to receive the cell reference signals of candidate virtual cell by telecommunication circuit, to candidate virtual The signal strength and/or signal quality of the cell reference signals of cell are detected, wherein the cell reference of candidate virtual cell The reference signal polymerization that signal is sent by the transfer point of all unlatchings in candidate virtual cell obtains.

In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of base station, comprising: Processor and transceiver, processor connect transceiver；Processor is used to send candidate virtual to user equipment by transceiver small Area, candidate transport point configuration information, so that user equipment is according to candidate virtual cell, candidate transport point configuration information, to time Virtual subdistrict and candidate transport point is selected to measure, and then selection target is virtually small from candidate virtual cell and candidate transport point Area and object transmission point, wherein virtual subdistrict includes the transfer point of multiple shared Physical Cell Identifier；Assist user equipment access Destination virtual cell and object transmission point.

Wherein, processor is used to virtual subdistrict measurement configuration information being sent to user equipment by transceiver, so that User equipment measures candidate virtual cell according to candidate virtual cell measurement configuration information, obtains virtual subdistrict measurement knot Fruit, according to virtual subdistrict measurement result from candidate virtual cell selection target virtual subdistrict；User is received by transceiver to set The destination virtual cell information that preparation is sent；The candidate transport point measurement of destination virtual cell is matched according to destination virtual cell information Confidence breath is sent to user equipment by transceiver, so that user equipment is according to candidate transport point measurement configuration information to target Candidate transport point in virtual subdistrict measures, and obtains transfer point measurement result, empty from target according to transfer point measurement result Selection target transfer point in the candidate transport point of quasi- cell；The object transmission point letter that user equipment is sent is received by transceiver Breath.

Wherein, processor is for passing through receipts when user equipment is connected to the edge transfer point of the corresponding virtual subdistrict in base station It sends out device and candidate virtual cell measurement configuration information is sent to user equipment.

It wherein, include the neighboring candidate for the edge transfer point that user equipment connects in candidate virtual cell measurement configuration information Virtual subdistrict information.

Wherein, it is small to be further used for the destination virtual sent by the base station of transceiver reception destination virtual cell for processor Edge in area transmits point set, and the candidate transport point measurement configuration information of destination virtual cell is generated according to set.

Wherein, processor is further used for initiating switching request to the base station of destination virtual cell by transceiver, and will Object transmission point information is sent to the base station of destination virtual cell.

The beneficial effects of the present invention are: user equipment measures candidate virtual cell and candidate transport point, according to Measurement result selection target virtual subdistrict and object transmission point from candidate virtual cell and candidate transport point access destination virtual Cell and object transmission point, destination virtual cell correspond to virtual level, and object transmission point corresponds to physical layer, in access of virtual cell Realize the double-deck switching of physical layer and virtual level.

Detailed description of the invention

Fig. 1 is the flow diagram of communication handover method first embodiment of the present invention；

Fig. 2 is the schematic diagram of virtual subdistrict；

Fig. 3 is the flow diagram of communication handover method second embodiment of the present invention；

Fig. 4 is the schematic diagram switched between virtual subdistrict in one embodiment of communication handover method of the present invention；

Fig. 5 is the flow diagram of communication handover method 3rd embodiment of the present invention；

Fig. 6 is the flow diagram of communication handover method fourth embodiment of the present invention；

Fig. 7 is the flow diagram of the 5th embodiment of communication handover method of the present invention；

Fig. 8 is the structural schematic diagram of user equipment first embodiment of the present invention；

Fig. 9 is the structural schematic diagram of user equipment second embodiment of the present invention；

Figure 10 is the structural schematic diagram of user equipment 3rd embodiment of the present invention；

Figure 11 is the structural schematic diagram of user equipment fourth embodiment of the present invention；

Figure 12 is the structural schematic diagram of base station first embodiment of the present invention；

Figure 13 is the structural schematic diagram of base station second embodiment of the present invention；

Figure 14 is the structural schematic diagram of base station 3rd embodiment of the present invention.

Specific embodiment

As shown in Figure 1, the executing subject of communication handover method first embodiment of the present invention is user equipment, the present embodiment packet It includes:

S11: user equipment measures candidate virtual cell and candidate transport point, obtains measurement result.

As shown in Fig. 2, each VC (Virtual Cell, VC) includes multiple shared PCI (Physical Cell Identifier, PCI) TP (Transmission Point, TP) and the central controller for controlling TP, such as it is dedicated Baseband processing unit (Building Baseband Unit, BBU), centralization BBU or the void based on cloud framework baseband pool Quasi- base station.It is connected between TP and central controller by the transmission network of low latency, to realize ideal passback.It is all in same VC TP common transport common control channel, it is auxiliary same such as primary synchronization signal (Primary Synchronization Signal, PSS) It walks signal (Secondary Synchronization Signal, SSS), broadcast channel (Broadcast Channel, BCH) With cell reference signals (Cell Reference Signal, CRS).

In order to reduce energy consumption and reduce interference, situation can be accessed according to user equipment and tidal effect turns off or on certain A little TP.The TP of closing will not connect user device transmissions user data, but still can send discovery reference signal (Discovery Reference Signal, DRS) for measurement, the sending cycle of DRS is longer than the reference signal sending cycle for opening TP.

User equipment can receive current area base station send measurement configuration information with obtain candidate virtual cell and The information of candidate transport point can also voluntarily obtain the information of candidate virtual cell and candidate transport point by blind examination.It is current small The cell that area, i.e. user equipment currently connect can be conventional cell, or virtual subdistrict.Current area is virtual small Qu Shi, the base station of current area can refer to the base for the TP that the central controller of current area and/or user equipment currently connect It stands.In general, candidate virtual cell is the neighboring community of current virtual cell.

Cell reference signals (Cell Reference Signal, CRS) and candidate of the user equipment to candidate virtual cell The transfer point grade reference signal of transfer point measures.Such as user equipment can measure the reference of candidate cell and transfer point Reference Signal Received Power (Reference Signal Received Power, RSRP), the Reference Signal Received Quality of signal (Reference Signal Received, RSRQ) etc., obtains measurement result.

S12: user equipment selection target virtual subdistrict from candidate virtual cell and candidate transport point according to measurement result With object transmission point.

User equipment can first measure with selection target virtual subdistrict candidate virtual cell, then pass again to candidate Defeated point measures, and candidate transport point is the transfer point in destination virtual cell at this time.User equipment can also be simultaneously to time It selects virtual subdistrict and candidate transport point to measure, obtains measurement result, selection target virtual subdistrict is distinguished according to measurement result With object transmission point, and ensure that object transmission point belongs to destination virtual cell.

S13: user equipment accesses destination virtual cell and object transmission point.

In general, the information of destination virtual cell and object transmission point is sent to the base of current area by user equipment It stands, switching request is initiated to the base station of destination virtual cell in the base station of current area, and object transmission point information is issued target The base station of virtual subdistrict, the base station in response switching request of destination virtual cell keep user equipment linking objective on virtual level empty Intend cell, linking objective transfer point in physical layer.It can certainly voluntarily be sent out from user equipment to the base station of destination virtual cell Play switching request.

Implementation through the foregoing embodiment, user equipment measure candidate virtual cell and candidate transport point, root According to measurement result, selection target virtual subdistrict and object transmission point, access target are empty from candidate virtual cell and candidate transport point Quasi- cell and object transmission point, destination virtual cell correspond to virtual level, and object transmission point corresponds to physical layer, in access of virtual cell The double-deck switching of Shi Shixian physical layer and virtual level.

As shown in figure 3, communication handover method second embodiment of the present invention, is implemented in communication handover method first of the present invention On the basis of example, further limiting step S11 and S12 includes:

S111: user equipment measures candidate virtual cell, obtains virtual subdistrict measurement result.

User equipment receives the cell reference signals of candidate virtual cell, to the cell reference signals of candidate virtual cell Signal strength and/or signal quality are detected, and wherein signal strength can be indicated with RSRP, and signal quality can be with RSRQ table Show.

In one embodiment of communication handover method of the present invention, the cell reference signals of candidate virtual cell are by candidate empty The reference signal polymerization that the transfer point of all unlatchings is sent in quasi- cell obtains.

S112: user equipment selection target virtual subdistrict from candidate virtual cell according to virtual subdistrict measurement result.

User equipment can be according to virtual subdistrict measurement result voluntarily selection target virtual subdistrict, can also be by virtual subdistrict Measurement result reports the base station of current area, is made a choice by base station.

In general, user equipment is small from candidate virtual according to the RSRP and/or RSRQ for measuring obtained each virtual subdistrict Selection target virtual subdistrict in area.

For example, user equipment present access subzone A, measures candidate virtual subdistrict B and virtual subdistrict C. If user equipment detects that the RSRP of virtual subdistrict B is greater than the RSRP of current virtual cell, and the difference of the two is greater than preset threshold Value, meets switching condition；And the RSRP of virtual subdistrict C is unsatisfactory for switching condition, then user equipment selects virtual subdistrict B as mesh Mark virtual subdistrict.If the RSRP of virtual subdistrict B and virtual subdistrict C are all satisfied switching condition, user equipment can be relatively virtual smaller The RSRP of area B and virtual subdistrict C, and select the higher virtual subdistrict RSRP as destination virtual cell；User equipment can also be with Compare the RSRQ of virtual subdistrict B and virtual subdistrict C, and selects the higher virtual subdistrict RSRQ as destination virtual cell；User The PCI of virtual subdistrict B and virtual subdistrict C and corresponding RSRP can also be reported to the base station of current area A by equipment, by current The base station of cell A according to the virtual subdistrict B obtained from the base station of virtual subdistrict B and virtual subdistrict C by X2 background processes with Which virtual subdistrict the load information judgement of virtual subdistrict C selects, and selection result is sent to user equipment.

It in above-mentioned example, is mainly selected according to RSRP, RSRQ is only used as possible auxiliary, naturally it is also possible to according to RSRQ is selected, or is selected together according to RSRP and RSRQ.

S113: user equipment measures the candidate transport point in destination virtual cell, obtains transfer point measurement result.

User equipment receives the transfer point reference signal of the candidate transport point in destination virtual cell, to candidate transport point The signal strength and/or signal quality of transfer point reference signal are detected, and wherein signal strength is indicated with RSRP, signal quality It is indicated with RSRQ.

Candidate transport point in destination virtual cell can be all transfer points in feeling the pulse with the finger-tip mark virtual subdistrict, be also possible to The edge transfer point adjacent with current area in feeling the pulse with the finger-tip mark virtual subdistrict.

S114: according to transfer point measurement result, the selection target from the candidate transport point of destination virtual cell passes user equipment Defeated point.

Transfer point can also be measured and be tied according to transfer point measurement result voluntarily selection target transfer point by user equipment Fruit reports the base station of current area, is made a choice by base station.

Since transfer point is used for transmission user data, signal strength and/or signal quality are the main marks of transfer point selection It is quasi-, it is however generally that the signal strength of reference signal and/or the maximum candidate transport point of signal quality can be selected as object transmission Point, the loading condition without considering transfer point.

Implementation through the foregoing embodiment first measures to select mesh from candidate virtual cell candidate virtual cell Virtual subdistrict is marked, then the candidate transport point in destination virtual cell is measured with selection target transfer point, with directly measurement Transfer point in all candidate virtual cells is compared, and the transfer point measurement that user equipment needs to carry out, section can be effectively reduced The energy consumption for saving user equipment, when the transfer point deployment density especially in candidate virtual cell is larger.

In one embodiment of communication handover method of the present invention, the cell that user equipment is currently accessed is virtual subdistrict, User equipment measures candidate virtual cell in the edge transfer point for being connected to current area.

Since user equipment generally connects immediate TP, which TP can be connected to by user equipment come quickly thick Slightly estimate the position of user equipment.When user equipment is connected to the edge transfer point of current area, the position of user equipment is judged Set the edge for having been approached current area, it is possible to move out current area and need to switch, therefore carry out to candidate virtual cell Measurement.If user equipment is switched to non-edge transfer point from edge transfer point, cancel measurement.

Edge transfer point can refer to that physical location or coverage area are located at the transfer point at the edge VC, be also possible to by base The possibility for justice of standing firm needs the transfer point that switches, such as when the transfer point positioned at the edge VC breaks down, base station can specify certain A little physical locations are not at the edge VC, but from the closer transfer point of failed transmission point as edge transfer point.

Triggering measurement when the signal power usually in current area is lower than some threshold value in the prior art.However virtual In cell, user equipment connects edge transfer point when being moved to virtual subdistrict edge, and signal power not necessarily occurs significantly Decline, can not accurately determine when to need to measure using traditional measurement trigger mechanism.If measured always, may make User equipment carries out many unnecessary measurements, increases its energy consumption.Implementation through the foregoing embodiment is connected in user equipment Measurement can more accurately be triggered while saving energy consumption by just measuring when edge transfer point.

User equipment can pass the edge that user equipment connects in the edge transfer point for being connected to current virtual cell The adjacent virtual subdistrict of defeated point measures.In general, user equipment connects nearest transfer point, the side of user equipment connection The adjacent virtual subdistrict of edge transfer point is the virtual subdistrict nearest apart from user equipment, and it is small to be most possibly chosen as destination virtual Area.User equipment only measured adjacent virtual subdistrict as candidate virtual cell, it is possible to reduce user equipment need into Capable virtual subdistrict measurement, saves energy consumption.One VC may include multiple edge transfer points, and different edge transfer points is corresponding Adjacent virtual cell may be identical, it is also possible to different.

For example, triggering is to candidate virtual as shown in figure 4, user equipment currently connects the transfer point 1 of virtual subdistrict 1 The measurement of cell, and candidate virtual cell is the virtual subdistrict 2 and virtual subdistrict 3 adjacent with transfer point 1, without including and void Quasi- cell 1 is adjacent, but with the non-conterminous virtual subdistrict 4,5,6,7 of transfer point 1.

As shown in figure 5, communication handover method 3rd embodiment of the present invention, is implemented to communication handover method second of the present invention Example further expands, therefore to the step identical as communication handover method second embodiment of the present invention, details are not described herein.This hair Bright communication handover method 3rd embodiment includes:

S121: user equipment measures candidate virtual cell, obtains virtual subdistrict measurement result.

S122: user equipment selection target virtual subdistrict from candidate virtual cell according to virtual subdistrict measurement result.

S123: destination virtual cell information is sent to the base station of current area by user equipment.

The PCI of destination virtual cell is sent to the base station of current area by user equipment.

If by the base station selected destination virtual cell of current area, user equipment is needed candidate virtual cell PCI and corresponding measurement result such as RSRP and/or RSRQ send jointly to base station.

S124: the destination virtual that the base station that user equipment receives current area is sent according to destination virtual cell information is small The candidate transport point measurement configuration information in area.

The base station of current area time of this signaling to user equipment transmission destination virtual cell is set by RRC connection reconfiguration Select transfer point measurement configuration information.It can increase newly in RRC connection reconfiguration confidence breath for indicating candidate transport point set TpsToAddModList and tpsToRemoveList cell.Candidate transport point set is that the base station of destination virtual cell passes through X2 Process is sent to the base station of current area.

In one embodiment of communication handover method of the present invention, candidate transport point set is by the side in destination virtual cell Edge transmission point group at.It may include all edge transfer points in destination virtual cell in edge transmission point set, it can also be only Including the part edge transfer point adjacent with current area.

Still illustrated with Fig. 4, destination virtual cell is virtual subdistrict 2, may include virtual small in candidate transport point set All edge transfer points 2,3,4,5,6 and 7 in area 2, can also only include the edge transfer point 2 and 3 adjacent with virtual subdistrict 1.

Implementation through the foregoing embodiment, it is possible to reduce energy consumption is saved in the transfer point measurement that user equipment needs to carry out.

Since distance of the edge transfer point adjacent with current area in destination virtual cell apart from user equipment is nearest, In general signal strength and better quality, a possibility that being chosen as object transmission point, are bigger.It transmits in point set and only wraps in edge The part edge transfer point adjacent with current area is included, it can be while not making a big impact to selection result, further Reduce the transfer point quantity that user equipment needs to measure.

It include what at least one was closed in one embodiment of communication handover method of the present invention, in candidate transport point set Transfer point, the candidate transport point measurement configuration information of destination virtual cell further comprises discovery reference signal timing letter at this time Breath, such as discovery reference signal measurement timing configure (discovery signals measurement timing Configuration, DMTC) sub-frame offset.It was found that reference signal is the reference signal that the transfer point closed is sent, discovery reference Signal sequence information includes period and the offset that the transfer point closed sends discovery reference signal, can calculate closing accordingly Transfer point send every time discovery reference signal time.User equipment can be according to discovery reference signal timing information to closing Transfer point measures.

The measurement to closing transmission point may be implemented in implementation through the foregoing embodiment, expands the range of candidate transport point, The selection course of optimization aim transfer point.

S125: user equipment measures the candidate transport point in destination virtual cell, obtains transfer point measurement result.

User equipment is according to the candidate transport point measurement configuration information of destination virtual cell to the time in destination virtual cell Transfer point is selected to measure.

S126: according to transfer point measurement result, the selection target from the candidate transport point of destination virtual cell passes user equipment Defeated point.

In the present embodiment, user equipment first receives candidate virtual cell measurement configuration information from the base station of current area, into After row measurement and selection, destination virtual cell information is reported to the base station of current area, then receive the candidate of destination virtual cell Transfer point measurement configuration information.In other embodiments, user equipment can obtain while obtaining candidate virtual cell information Take the transfer point information in candidate virtual cell.Behind user equipment selection target virtual subdistrict in the transfer point for having obtained information Screening belongs to the transfer point of destination virtual cell as candidate transport point.The present embodiment can reduce the candidate transport for needing to transmit Point quantity.

As shown in fig. 6, the executing subject of communication handover method fourth embodiment of the present invention is base station, the present embodiment includes:

S21: base station sends candidate virtual community configured information and candidate transport point configuration information to user equipment.

VC includes the TP of multiple shared PCI and the base station central controller for controlling TP, such as dedicated base Tape handling unit (Building Baseband Unit, BBU), centralization BBU or the virtual base based on cloud framework baseband pool It stands.It is connected between TP and base station central controller by the transmission network of low latency, to realize ideal passback.During base station can refer to The base station for the TP that centre controller and/or user equipment currently connect.

Base station generally passes through RRC connection reconfiguration and sets transmission candidate virtual community configured information and candidate transport point with confidence Breath.Candidate virtual community configured information and candidate transport point configuration information can be sent jointly to user equipment by base station, can also To send respectively.

User equipment candidate virtual community configured information and candidate transport point configuration information based on the received, to candidate virtual Cell and candidate transport point measure, and then selection target virtual subdistrict and mesh from candidate virtual cell and candidate transport point Mark transfer point.

S22: user equipment access destination virtual cell and object transmission point are assisted in base station.

Base station receives the destination virtual cell and object transmission point that user equipment is sent, and sends and switches to destination virtual cell It requests, and object transmission point is issued to the base station of destination virtual cell, such as increase in switching request for indicating that target passes The cell of defeated point.The base station in response switching request of destination virtual cell prepares object transmission point, such as when object transmission point is to close It needs first to open object transmission point when the transfer point closed, destination virtual cell and object transmission point is then made to connect user equipment. Base station can disconnect the connection with user equipment before or after destination virtual cell and object transmission point connection user equipment.

Implementation through the foregoing embodiment, user equipment is according to the candidate virtual community configured information and time obtained from base station Transfer point configuration information is selected to measure candidate virtual cell and candidate transport point, it is small from candidate virtual according to measurement result Selection target virtual subdistrict and object transmission point in area and candidate transport point, under the assistance of base station access destination virtual cell and Object transmission point, destination virtual cell correspond to virtual level, and object transmission point corresponds to physical layer, realize object in access of virtual cell Manage the double-deck switching of layer and virtual level.

As shown in fig. 7, the 5th embodiment of communication handover method of the present invention, is implemented in communication handover method the 4th of the present invention On the basis of example, further limiting step S21 includes:

S211: candidate virtual cell measurement configuration information is sent to user equipment by base station.

Base station is set to user equipment by RRC connection reconfiguration and sends candidate virtual cell measurement configuration information, therein CellstoAddModList cell includes the PCI of candidate virtual cell.User equipment matches confidence according to candidate virtual cell measurement Breath measures candidate virtual cell, obtains virtual subdistrict measurement result, according to virtual subdistrict measurement result from candidate virtual Selection target virtual subdistrict in cell.User equipment shown in fig. 7 voluntarily selection target virtual subdistrict.In other embodiments In, user equipment can report virtual subdistrict measurement result, then by base station according to virtual subdistrict measurement result selection target void Quasi- cell.

In one embodiment, base station in user equipment in the edge transfer point for being connected to current area, will be candidate empty Quasi- cell measurement configuration information is sent to user equipment, so that user equipment is according to candidate virtual cell measurement configuration information to time Virtual subdistrict is selected to measure.

Since user equipment generally connects immediate TP, which TP can be connected to by user equipment come quickly thick Slightly estimate the position of user equipment.When user equipment is connected to the edge transfer point of current area, the position of user equipment is judged Set the edge for having been approached current area, it is possible to move out current area and need to switch, therefore start candidate virtual cell and survey Amount.

Triggering measurement when the signal power usually in current area is lower than some threshold value in the prior art.However virtual In cell, user equipment connects edge transfer point when being moved to virtual subdistrict edge, and signal power not necessarily occurs significantly Decline, can not accurately determine when to need to measure using traditional measurement trigger mechanism.If measured always, may make User equipment carries out many unnecessary measurements, increases its energy consumption.Implementation through the foregoing embodiment is connected in user equipment Measurement can more accurately be triggered while saving energy consumption by just measuring when edge transfer point.Furthermore, it is possible to avoid User equipment blindly sends candidate virtual cell measurement configuration information to user equipment when connecting non-edge transfer point, to reduce Information transmission.

The candidate virtual cell for including in candidate virtual cell measurement configuration information may include the side of user equipment connection The adjacent virtual cell of edge transfer point.

In general, user equipment connects nearest transfer point, adjacent virtual of the edge transfer point of user equipment connection Cell is the virtual subdistrict nearest apart from user equipment, is most possibly chosen as destination virtual cell.It only will be adjacent virtual small Area is allocated to user equipment as candidate virtual cell and measures, it is possible to reduce the virtual subdistrict that user equipment needs to carry out is surveyed Amount saves energy consumption.One VC may include multiple edge transfer points, and the corresponding adjacent virtual cell of different edge transfer points can It can be identical, it is also possible to different.

If candidate virtual cell changes, such as some former candidate cell failure needs to remove, or with When the adjacent virtual cell of the edge transfer point of family equipment connection is as candidate virtual cell, user equipment passes at different edges Switching is so that corresponding adjacent virtual cell change between defeated point, then base station needs to re-initiate RRC connection reconfiguration and sets with will more Candidate virtual cell measurement configuration information after new issues user equipment.If user equipment is switched to non-side from edge transfer point Edge transfer point, then base station needs to re-initiate RRC connection reconfiguration and sets to cancel measurement.

S212: base station receives the destination virtual cell information that user equipment is sent.

Base station receives the PCI for the destination virtual cell that user equipment is sent.

S213: the candidate transport point measurement configuration information of destination virtual cell is sent out according to destination virtual cell information base station Give user equipment.

The candidate transport point that destination virtual cell is sent to user equipment is set by RRC connection reconfiguration in the base station of current area Measurement configuration information.The tpsToAddModList for indicating candidate transport point set can be increased in RRC connection reconfiguration confidence breath newly And tpsToRemoveList cell.

Candidate transport point set is that the base station of destination virtual cell is sent to the base station of current area by X2 process.Figure Shown in X2 process occur after step s 212, before step S213, practical X2 process can be the periodical mistake on backstage Simultaneously occurs for journey any time before step S213.It is increased newly in the servedCell-Information transmitted during X2 TpId cell is for indicating candidate transport point set.

User equipment surveys the candidate transport point in destination virtual cell according to candidate transport point measurement configuration information Amount, obtain transfer point measurement result, according to transfer point measurement result from the candidate transport point of destination virtual cell selection target Transfer point.User equipment shown in figure voluntarily selection target transfer point, can also report transfer point measurement result right to base station Afterwards by base station selected object transmission point.

In one embodiment of communication handover method of the present invention, the transfer point in candidate transport point set is destination virtual Edge transfer point in cell.It may include all edge transfer points in destination virtual cell in edge transmission point set, The part edge transfer point adjacent with current area can be only included.

It include what at least one was closed in one embodiment of communication handover method of the present invention, in candidate transport point set Transfer point, the candidate transport point measurement configuration information of destination virtual cell further comprises discovery reference signal timing letter at this time Breath, such as DMTC sub-frame offset.It was found that reference signal is the reference signal that the transfer point closed is sent, reference signal timing is found Information includes period and the offset that the transfer point closed sends discovery reference signal, can calculate the transfer point of closing accordingly The time of discovery reference signal is sent every time.User equipment can be clicked through according to transmission of the discovery reference signal timing information to closing Row measurement.

S214: base station receives the object transmission point information that user equipment is sent.

Base station receives the object transmission point ID that user equipment is sent.

Implementation through the foregoing embodiment, base station first send candidate virtual cell measurement configuration information to user equipment, then The destination virtual cell information that user equipment measurement and selection obtain is received, then the candidate transport point of destination virtual cell is measured Configuration information is sent to user equipment.Compared with the transfer point information of all candidate virtual cells is issued user equipment together, The transfer point quantity for needing to transmit can be reduced.

As shown in figure 8, user equipment first embodiment of the present invention includes:

Measurement module 11 obtains measurement result, wherein empty for measuring to candidate virtual cell and candidate transport point Quasi- cell includes the transfer point of multiple shared Physical Cell Identifier.

Selecting module 12, for selection target to be virtually small from candidate virtual cell and candidate transport point according to measurement result Area and object transmission point.

AM access module 13, for accessing destination virtual cell and object transmission point.

Each module that the user equipment of the present embodiment includes is for executing the corresponding present invention communication switching of Fig. 1 and Fig. 1 Each step in method first embodiment, particular content please refer to the corresponding communication handover method first of the present invention of Fig. 1 and Fig. 1 Embodiment, details are not described herein.

As shown in figure 9, user equipment second embodiment of the present invention, is on the basis of user equipment first embodiment of the present invention On, measurement module 11 includes:

Virtual subdistrict measuring unit 111 obtains virtual subdistrict measurement result for measuring to candidate virtual cell.

In one embodiment of user equipment of the present invention, virtual subdistrict measuring unit 111 is worked as being connected in user equipment When the edge transfer point of preceding virtual subdistrict, the virtual subdistrict adjacent to the edge transfer point of user equipment connection is measured.

Since user equipment generally connects immediate TP, which TP can be connected to by user equipment come quickly thick Slightly estimate the position of user equipment.When user equipment is connected to the edge transfer point of current area, the position of user equipment is judged Set the edge for having been approached current area, it is possible to move out current area and need to switch, it is therefore desirable to candidate virtual cell It measures.

Triggering measurement when the signal power usually in current area is lower than some threshold value in the prior art.In virtual subdistrict In, user equipment connects edge transfer point when being moved to virtual subdistrict edge, significantly declining not necessarily occurs in signal power, It can not accurately determine when to need to measure using traditional measurement trigger mechanism.If measured always, user may be made Equipment carries out many unnecessary measurements, increases its energy consumption.Implementation through the foregoing embodiment is connected to edge in user equipment Measurement can more accurately be triggered while saving energy consumption by just measuring when transfer point.

Transfer point measuring unit 112 obtains transfer point for measuring to the candidate transport point in destination virtual cell Measurement result.

Selecting module 12 includes:

Virtual subdistrict selecting unit 121, for according to virtual subdistrict measurement result from candidate virtual cell selection target Virtual subdistrict.

Transfer point selecting unit 122, for according to transfer point measurement result from the candidate transport point of destination virtual cell Selection target transfer point.

Each module that the user equipment of the present embodiment includes is for executing the corresponding present invention communication switching of Fig. 3 and Fig. 3 Each step in method second embodiment, particular content please refer to the corresponding communication handover method second of the present invention of Fig. 3 and Fig. 3 Embodiment, details are not described herein.

As shown in Figure 10, user equipment 3rd embodiment of the present invention is the base in user equipment second embodiment of the present invention On plinth, further comprise:

Sending module 14, for destination virtual cell information to be sent to the base station of current area.

Receiving module 15, the destination virtual that the base station for receiving current area is sent according to destination virtual cell information are small The candidate transport point measurement configuration information in area.

Each module that the user equipment of the present embodiment includes is for executing the corresponding present invention communication switching of Fig. 5 and Fig. 5 Each step in method 3rd embodiment, particular content please refer to the corresponding communication handover method third of the present invention of Fig. 5 and Fig. 5 Embodiment, details are not described herein.

In the present embodiment, user equipment first receives candidate virtual cell measurement configuration information from the base station of current area, into After row measurement and selection, destination virtual cell information is reported to the base station of current area, then receive the candidate of destination virtual cell Transfer point measurement configuration information.In other embodiments, user equipment can obtain while obtaining candidate virtual cell information Take the transfer point information in candidate virtual cell.Behind user equipment selection target virtual subdistrict in the transfer point for having obtained information Screening belongs to the candidate transport point of destination virtual cell as candidate transport point.The present embodiment can reduce the candidate for needing to transmit Transfer point quantity.

As shown in figure 11, user equipment fourth embodiment of the present invention includes: processor 110 and telecommunication circuit 120, processor 110 pass through bus connection communication circuit 120.

Telecommunication circuit 120 is the interface that user equipment is communicated with other communication equipments for sending and receiving data.

Processor 110 controls the operation of user equipment, and processor 110 can also be known as CPU (Central Processing Unit, central processing unit).Processor 110 may be a kind of IC chip, the processing capacity with signal.Processor 110 can also be general processor, digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.General processor It can be microprocessor or the processor be also possible to any conventional processor etc..

User equipment may further include memory (being not drawn into figure), and memory works for storage processor 110 Necessary instruction and data also can store the received data of telecommunication circuit 120.

Processor 110 is surveyed for being measured by telecommunication circuit 120 to candidate virtual cell and candidate transport point Amount is as a result, wherein virtual subdistrict includes the transfer point of multiple shared Physical Cell Identifier；It is small from candidate virtual according to measurement result Selection target virtual subdistrict and object transmission point in area and candidate transport point；Access destination virtual cell and object transmission point.

Further, processor 110 obtains virtual subdistrict measurement result for measuring to candidate virtual cell；Root According to virtual subdistrict measurement result from candidate virtual cell selection target virtual subdistrict；By telecommunication circuit 120 by destination virtual Cell information is sent to the base station of current area；The base station for receiving current area by telecommunication circuit 120 is small according to destination virtual Area's information and the candidate transport point measurement configuration information of destination virtual cell sent, according to the candidate transport of destination virtual cell Point measurement configuration information measures the candidate transport point in destination virtual cell, obtains transfer point measurement result；According to biography Defeated measurement result selection target transfer point from the candidate transport point of destination virtual cell.

Further, processor 110 is used for when user equipment is connected to the edge transfer point of current virtual cell, is passed through Telecommunication circuit 120 measures candidate virtual cell.

Further, processor 110 is used for when user equipment is connected to the edge transfer point of current virtual cell, is passed through Telecommunication circuit 120 measures the neighboring candidate virtual subdistrict for the edge transfer point that user equipment connects.

Further, processor 110 is used to receive the cell reference signals of candidate virtual cell by telecommunication circuit 120, The signal strength and/or signal quality of the cell reference signals of candidate virtual cell are detected, wherein candidate virtual cell Cell reference signals by all unlatchings in candidate virtual cell transfer point send reference signal polymerization obtain.

As shown in figure 12, base station first embodiment of the present invention includes:

Configuration module 21, for sending candidate virtual cell, candidate transport point configuration information to user equipment, so that handy Family equipment measures candidate virtual cell and candidate transport point according to candidate virtual cell, candidate transport point configuration information, And then selection target virtual subdistrict and object transmission point from candidate virtual cell and candidate transport point, wherein virtual subdistrict includes The transfer point of multiple shared Physical Cell Identifier.

Switching module 22, for assisting user equipment access destination virtual cell and object transmission point.

In one embodiment of base station of the present invention, switching module 22 is used to initiate to switch to the base station of destination virtual cell and ask It asks, and object transmission point information is sent to the base station of destination virtual cell.

Each module that the base station of the present embodiment includes is for executing the corresponding communication handover method of the present invention of Fig. 6 and Fig. 6 Each step in fourth embodiment, particular content, which please refers to the corresponding communication handover method the 4th of the present invention of Fig. 6 and Fig. 6, to be implemented Example, details are not described herein.

Implementation through the foregoing embodiment, user equipment is according to the candidate virtual community configured information and time obtained from base station Transfer point configuration information is selected to measure candidate virtual cell and candidate transport point, it is small from candidate virtual according to measurement result Selection target virtual subdistrict and object transmission point in area and candidate transport point, under the assistance of base station access destination virtual cell and Object transmission point, destination virtual cell correspond to virtual level, and object transmission point corresponds to physical layer, realize physical layer and virtual level Bilayer switches when access of virtual cell.

As shown in figure 13, base station second embodiment of the present invention is configuration on the basis of base station first embodiment of the present invention Module 21 includes:

First transmission unit 211, for candidate virtual cell measurement configuration information to be sent to user equipment, so that handy Family equipment measures candidate virtual cell according to candidate virtual cell measurement configuration information, obtains virtual subdistrict measurement knot Fruit, according to virtual subdistrict measurement result from candidate virtual cell selection target virtual subdistrict.

In one embodiment of base station of the present invention, the first transmission unit 211 is used to be connected to base station in user equipment corresponding Candidate virtual cell measurement configuration information is sent to user equipment when the edge transfer point of virtual subdistrict.

First receiving unit 212, for receiving the destination virtual cell information of user equipment transmission.

Second transmission unit 213, for being surveyed the candidate transport point of destination virtual cell according to destination virtual cell information Amount configuration information is sent to user equipment, so that user equipment is small to destination virtual according to candidate transport point measurement configuration information Candidate transport point in area measures, and obtains transfer point measurement result, according to transfer point measurement result from destination virtual cell Candidate transport point in selection target transfer point.

Second receiving unit 214, for receiving the object transmission point information of user equipment transmission.

Each module that the base station of the present embodiment includes is for executing the corresponding communication handover method of the present invention of Fig. 7 and Fig. 7 Each step in 5th embodiment, particular content, which please refers to the corresponding communication handover method the 5th of the present invention of Fig. 7 and Fig. 7, to be implemented Example, details are not described herein.

Implementation through the foregoing embodiment, base station first send candidate virtual cell measurement configuration information to user equipment, then Receive user equipment measurement and the obtained destination virtual cell of selection, then by the candidate transport point measuring configuration of destination virtual cell Information is sent to user equipment.It, can compared with the transfer point information of all candidate virtual cells is issued user equipment together Reduce the candidate transport point quantity for needing to transmit.

As shown in figure 14, base station 3rd embodiment of the present invention includes: processor 210 and transceiver 220, and processor 210 is logical Cross bus connection transceiver 220.

Transceiver 220 is the interface that base station is communicated with other communication equipments for sending and receiving data.

The operation of 210 control base station of processor, processor 210 can also be known as CPU (Central Processing Unit, central processing unit).Processor 210 may be a kind of IC chip, the processing capacity with signal.Processor 210 can also be general processor, digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.General processor It can be microprocessor or the processor be also possible to any conventional processor etc..

Base station may further include memory (being not drawn into figure), and memory must for the work of storage processor 210 The instruction and data needed, also can store the received data of transceiver 220.

Processor 210 is used for through transceiver 220 to user equipment sends candidate virtual cell, candidate transport point matches confidence Breath, so that user equipment is according to candidate virtual cell, candidate transport point configuration information, to candidate virtual cell and candidate transport Point measures, and then selection target virtual subdistrict and object transmission point from candidate virtual cell and candidate transport point, wherein Virtual subdistrict includes the transfer point of multiple shared Physical Cell Identifier；User equipment access destination virtual cell and target is assisted to pass Defeated point.

Further, processor 210 is used to virtual subdistrict measurement configuration information being sent to user by transceiver 220 and set It is standby, so that user equipment measures candidate virtual cell according to candidate virtual cell measurement configuration information, obtain virtual Cell measurement results, according to virtual subdistrict measurement result from candidate virtual cell selection target virtual subdistrict；Pass through transceiver 220 receive the destination virtual cell information that user equipment is sent；According to destination virtual cell information by the time of destination virtual cell Transfer point measurement configuration information is selected to be sent to user equipment by transceiver 220, so that user equipment is according to candidate transport point Measurement configuration information measures the candidate transport point in destination virtual cell, transfer point measurement result is obtained, according to transmission Point measurement result selection target transfer point from the candidate transport point of destination virtual cell；User is received by transceiver 220 to set The object transmission point information that preparation is sent.

Further, processor 210 is used to be connected to the edge transfer point of the corresponding virtual subdistrict in base station in user equipment When candidate virtual cell measurement configuration information is sent to by user equipment by transceiver 220.Wherein candidate virtual cell measurement It include the neighboring candidate virtual subdistrict information of the edge transfer point of user equipment connection in configuration information.

Further, the target that the base station that processor 210 is used to receive destination virtual cell by transceiver 220 is sent is empty Edge in quasi- cell transmits point set, and the candidate transport point measurement configuration information of destination virtual cell is generated according to set.

Further, processor 210 is used to initiate switching request to the base station of destination virtual cell by transceiver 220, And object transmission point information is sent to the base station of destination virtual cell.

In several embodiments provided by the present invention, it should be understood that disclosed user equipment, base station and method, It may be implemented in other ways.For example, user equipment and base station embodiments described above is only schematical, For example, the division of the module or unit, only a kind of logical function partition, can there is other division side in actual implementation Formula, such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored, or not It executes.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be to be connect by some Mouthful, the indirect coupling or communication connection of device or unit can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.Some or all of unit therein can be selected to realize present embodiment scheme according to the actual needs Purpose.

It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including multiple instructions is with so that a computer is set Standby (can be personal computer, server or the network equipment etc.) or processor (processor) execute each reality of the present invention Apply all or part of the steps of mode the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk Etc. the various media that can store program code.

Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other Technical field is included within the scope of the present invention.

Claims

1. a communication switching method, is characterized in that, comprises:

The user equipment measures the candidate virtual cell and the candidate transmission point, and obtains a measurement result, wherein the virtual cell includes a plurality of transmission points sharing a physical cell identifier;

selecting, by the user equipment, a target virtual cell and a target transmission point from the candidate virtual cells and candidate transmission points according to the measurement result;

The user equipment accesses the target virtual cell and the target transmission point.

2. The method according to claim 1, wherein

The user equipment measures the candidate virtual cells and the candidate transmission points, obtains a measurement result, and selects the target virtual cell and the target transmission point from the candidate virtual cells and the candidate transmission points according to the measurement results, including:

The user equipment measures the candidate virtual cell to obtain a virtual cell measurement result;

selecting, by the user equipment, a target virtual cell from the candidate virtual cells according to the virtual cell measurement result;

The user equipment measures the candidate transmission points in the target virtual cell to obtain a transmission point measurement result;

The user equipment selects a target transmission point from candidate transmission points of the target virtual cell according to the transmission point measurement result.

3. The method of claim 2, wherein

The measuring by the user equipment on the candidate virtual cell includes:

The user equipment measures the candidate virtual cell when connected to the edge transmission point of the current virtual cell.

4. The method of claim 3, wherein

The measuring by the user equipment on the candidate virtual cell includes:

When connecting to the edge transmission point of the current virtual cell, the user equipment measures the candidate virtual cells adjacent to the edge transmission point to which the user equipment is connected.

5. The method according to claim 2, wherein:

After the selecting a target virtual cell from the candidate virtual cells according to the virtual cell measurement result, before the user equipment measures the candidate transmission points in the target virtual cell, the method further includes:

sending, by the user equipment, the target virtual cell information to the base station of the current cell;

The user equipment receives the candidate transmission point measurement configuration information of the target virtual cell that is sent by the base station of the current cell according to the target virtual cell information.

6. The method of claim 5, wherein

The candidate transmission point measurement configuration information of the target virtual cell includes a set of edge transmission points in the target virtual cell, and the user equipment measures the edge transmission points according to the set, wherein the set is the target Sent by the base station of the virtual cell to the base station of the current cell.

7. The method of claim 6, wherein

The set includes at least one closed transmission point, the candidate transmission point measurement configuration information of the target virtual cell further includes discovery reference signal timing information, and the discovery reference signal timing information indicates that the closed transmission point sends a discovery reference signal time.

8. The method of claim 1, wherein:

The measuring by the user equipment on the candidate virtual cell includes:

The user equipment measures the cell reference signal of the candidate virtual cell, and detects the signal strength and/or signal quality of the cell reference signal of the candidate virtual cell, wherein the cell reference signal of the candidate virtual cell is determined by the candidate virtual cell. It is obtained by aggregating the reference signals sent by all enabled transmission points in the virtual cell.

9. A communication switching method, comprising:

The base station sends the measurement configuration information of the candidate virtual cell and the measurement configuration information of the candidate transmission point to the user equipment, so that the user equipment can determine the candidate virtual cell according to the candidate virtual cell configuration information and the candidate transmission point configuration information. measuring with the candidate transmission point, and then selecting a target virtual cell and a target transmission point from the candidate virtual cell and the candidate transmission point, wherein the virtual cell includes a plurality of transmission points sharing a physical cell identity;

The base station assists the user equipment to access the target virtual cell and the target transmission point.

10. The method of claim 9, wherein:

The base station sends the candidate virtual cell configuration information and the candidate transmission point configuration information to the user equipment, so that the user equipment, according to the measurement configuration information of the candidate virtual cell and the measurement configuration information of the candidate transmission point, performs a The virtual cells and candidate transmission points are measured, and then the target virtual cell and the target transmission point are selected from the candidate virtual cells and candidate transmission points, including:

The base station sends the candidate virtual cell measurement configuration information to the user equipment, so that the user equipment measures the candidate virtual cell according to the candidate virtual cell measurement configuration information, and obtains a virtual cell measurement result, according to The virtual cell measurement result selects a target virtual cell from the candidate virtual cells;

receiving, by the base station, the target virtual cell information sent by the user equipment;

The base station sends the candidate transmission point measurement configuration information of the target virtual cell to the user equipment according to the target virtual cell information, so that the user equipment can perform a measurement on the target virtual cell according to the candidate transmission point measurement configuration information. The candidate transmission points in the cell are measured to obtain a transmission point measurement result, and a target transmission point is selected from the candidate transmission points of the target virtual cell according to the transmission point measurement result;

The base station receives the target transmission point information sent by the user equipment.

11. The method of claim 10, wherein:

The sending, by the base station, the measurement configuration information of the candidate virtual cell to the user equipment includes:

The base station sends the candidate virtual cell measurement configuration information to the user equipment when the user equipment is connected to the edge transmission point of the virtual cell corresponding to the base station.

12. The method of claim 11, wherein:

The candidate virtual cell measurement configuration information includes information about the candidate virtual cells adjacent to the edge transmission point connected to the user equipment.

13. The method of claim 10, wherein

The candidate transmission point measurement configuration information of the target virtual cell includes a set of edge transmission points in the target virtual cell, wherein the set is received by the base station from the base station of the target virtual cell.

14. The method of claim 13, wherein

The set includes at least one closed transmission point, the candidate transmission point measurement configuration information of the target virtual cell further includes discovery reference signal timing information, and the discovery reference signal is a reference signal sent by the closed transmission point, so The discovery reference signal timing information indicates the time at which the turned-off transmission point sends the discovery reference signal.

15. The method of claim 9, wherein:

The base station assisting the user equipment to access the target virtual cell and the target transmission point includes:

The base station initiates a handover request to the base station of the target virtual cell, and sends the target transmission point information to the base station of the target virtual cell.

16. A user equipment, comprising:

a measurement module, configured to measure a candidate virtual cell and a candidate transmission point to obtain a measurement result, wherein the virtual cell includes a plurality of transmission points sharing a physical cell identifier;

a selection module, configured to select a target virtual cell and a target transmission point from the candidate virtual cells and candidate transmission points according to the measurement result;

An access module, configured to access the target virtual cell and the target transmission point.

17. The user equipment according to claim 16, wherein,

The measurement module includes:

a virtual cell measurement unit, configured to measure the candidate virtual cell to obtain a virtual cell measurement result;

a transmission point measurement unit, configured to measure the candidate transmission points in the target virtual cell to obtain a transmission point measurement result;

The selection module includes:

a virtual cell selection unit, configured to select a target virtual cell from the candidate virtual cells according to the virtual cell measurement result;

A transmission point selection unit, configured to select a target transmission point from candidate transmission points of the target virtual cell according to the transmission point measurement result.

18. The user equipment according to claim 17, wherein,

The virtual cell measurement unit is configured to measure the candidate virtual cells adjacent to the edge transmission point connected to the user equipment when the user equipment is connected to the edge transmission point of the current virtual cell.

19. The user equipment according to claim 17, wherein,

The user equipment further includes:

a sending module, configured to send the target virtual cell information to the base station of the current cell;

A receiving module, configured to receive the candidate transmission point measurement configuration information of the target virtual cell sent by the base station of the current cell according to the target virtual cell information.

20. A base station, comprising:

A configuration module, configured to send the candidate virtual cell and the candidate transmission point configuration information to the user equipment, so that the user equipment can measure the candidate virtual cell and the candidate transmission point according to the candidate virtual cell and the candidate transmission point configuration information , and then select a target virtual cell and a target transmission point from the candidate virtual cells and candidate transmission points, wherein the virtual cell includes a plurality of transmission points sharing a physical cell identifier;

A handover module, configured to assist the user equipment to access the target virtual cell and the target transmission point.

21. The base station according to claim 20, wherein,

The configuration module includes:

a first sending unit, configured to send the candidate virtual cell measurement configuration information to the user equipment, so that the user equipment measures the candidate virtual cell according to the candidate virtual cell measurement configuration information to obtain a virtual cell a measurement result, selecting a target virtual cell from the candidate virtual cells according to the virtual cell measurement result;

a first receiving unit, configured to receive the target virtual cell information sent by the user equipment;

a second sending unit, configured to send the candidate transmission point measurement configuration information of the target virtual cell to the user equipment according to the target virtual cell information, so that the user equipment can pair the candidate transmission point measurement configuration information according to the candidate transmission point measurement configuration information to the user equipment. The candidate transmission points in the target virtual cell are measured to obtain a transmission point measurement result, and a target transmission point is selected from the candidate transmission points of the target virtual cell according to the transmission point measurement result;

The second receiving unit is configured to receive the target transmission point information sent by the user equipment.

22. The base station according to claim 21, wherein,

The first sending unit is configured to send the candidate virtual cell measurement configuration information to the user equipment when the user equipment is connected to the edge transmission point of the virtual cell corresponding to the base station.

23. The base station according to claim 20, wherein,

The handover module is configured to initiate a handover request to the base station of the target virtual cell, and send the target transmission point information to the base station of the target virtual cell.

24. A user equipment, comprising:

a processor and a communication circuit, the processor being connected to the communication circuit;

The processor is configured to measure the candidate virtual cell and the candidate transmission point through the communication circuit, and obtain a measurement result, wherein the virtual cell includes a plurality of transmission points sharing a physical cell identifier; A target virtual cell and a target transmission point are selected from the virtual cells and candidate transmission points; and the target virtual cell and the target transmission point are accessed.

25. The user equipment according to claim 24, wherein,

The processor is configured to measure the candidate virtual cell through the communication circuit to obtain a virtual cell measurement result; select a target virtual cell from the candidate virtual cells according to the virtual cell measurement result; The target virtual cell information is sent to the base station of the current cell; the candidate transmission point measurement configuration information of the target virtual cell sent by the base station of the current cell according to the target virtual cell information is received through the communication circuit, The candidate transmission point measurement configuration information of the target virtual cell is used to measure the candidate transmission points in the target virtual cell to obtain a transmission point measurement result; according to the transmission point measurement result, select from the candidate transmission points of the target virtual cell destination transfer point.

26. The user equipment according to claim 25, wherein,

The processor is configured to measure the candidate virtual cell through the communication circuit when the user equipment is connected to the edge transmission point of the current virtual cell.

27. The user equipment according to claim 26, wherein,

The processor is configured to, when the user equipment is connected to the edge transmission point of the current virtual cell, use the communication circuit to measure the adjacent candidate virtual cells of the edge transmission point to which the user equipment is connected.

28. The user equipment according to claim 24, wherein,

The processor is configured to receive the cell reference signal of the candidate virtual cell through the communication circuit, and detect the signal strength and/or signal quality of the cell reference signal of the candidate virtual cell, wherein the cell of the candidate virtual cell The reference signal is obtained by aggregating the reference signals sent by all enabled transmission points in the candidate virtual cell.

29. A base station, comprising:

a processor and a transceiver, the processor being connected to the transceiver;

The processor is configured to send the candidate virtual cell and the candidate transmission point configuration information to the user equipment through the transceiver, so that the user equipment can, according to the candidate virtual cell and the candidate transmission point configuration information, perform the configuration information of the candidate virtual cell and the candidate transmission point. The candidate transmission point is measured, and then a target virtual cell and a target transmission point are selected from the candidate virtual cells and candidate transmission points, wherein the virtual cell includes a plurality of transmission points sharing a physical cell identity; assisting the user equipment to access the target virtual cell and the target transmission point.

30. The base station of claim 29, wherein,

The processor is configured to send the virtual cell measurement configuration information to the user equipment through the transceiver, so that the user equipment measures the candidate virtual cell according to the candidate virtual cell measurement configuration information to obtain a virtual cell measurement result, selecting a target virtual cell from the candidate virtual cells according to the virtual cell measurement result; receiving the target virtual cell information sent by the user equipment through the transceiver; converting the target virtual cell according to the target virtual cell information The candidate transmission point measurement configuration information of the target virtual cell is sent to the user equipment through the transceiver, so that the user equipment performs the measurement configuration information on the candidate transmission points in the target virtual cell according to the candidate transmission point measurement configuration information. measuring, obtaining a transmission point measurement result, and selecting a target transmission point from candidate transmission points of the target virtual cell according to the transmission point measurement result; and receiving the target transmission point information sent by the user equipment through the transceiver.

31. The base station of claim 30, wherein:

The processor is configured to send the candidate virtual cell measurement configuration information to the user equipment through the transceiver when the user equipment is connected to the edge transmission point of the virtual cell corresponding to the base station.

32. The base station of claim 31, wherein,

33. The base station of claim 30, wherein,

The processor is further configured to receive, through the transceiver, a set of edge transmission points in the target virtual cell sent by the base station of the target virtual cell, and generate candidate transmission point measurements of the target virtual cell according to the set configuration information.

34. The base station according to any one of claims 29-32, wherein,

The processor is further configured to initiate a handover request to the base station of the target virtual cell through the transceiver, and send the target transmission point information to the base station of the target virtual cell.