CN106788646A

CN106788646A - For the method and apparatus and communication system that are communicated using virtual subdistrict

Info

Publication number: CN106788646A
Application number: CN201510827478.6A
Authority: CN
Inventors: 佘锋; 郭海友
Original assignee: Alcatel Lucent Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2015-11-24
Filing date: 2015-11-24
Publication date: 2017-05-31
Anticipated expiration: 2035-11-24
Also published as: CN106788646B; WO2017089898A1

Abstract

Each embodiment of the disclosure provides the method and apparatus and corresponding communication system for communicating.In a kind of communication means implemented in macro base station, the configuration information relevant with the UL reference signals that UE to be transmitted is sent to the candidate's cell in multiple cells.Configuration information is used to receive UL reference signals to determine channel condition information by candidate's cell, and channel condition information indicates the channel quality of the channel between UE and each candidate's cell.The method also includes receiving the channel condition information for meeting predetermined condition from least one of candidate's cell candidate cell, and based on the channel condition information for receiving, it is determined that the virtual subdistrict of the data communication for UE.Virtual subdistrict is formed by one or more cells at least one candidate's cell.

Description

Method and apparatus for being communicated using virtual subdistrict And communication system

Technical field

Embodiment of the disclosure relates generally to wireless communication field, and more particularly, to In the method and apparatus communicated using virtual subdistrict and corresponding communication system.

Background technology

In recent years, the business demand on mobile network constantly increases.Such growth is not only It is embodied on the total traffic of network, is also embodied in individual consumer in the demand of bit rate. In order to meet such demand, a kind of possible solution is deployment density net very high Network, such network can be referred to as super density network (ultra-dense network, UDN). For example, in a macro base station, the coverage (i.e. macrocell) of such as grand eNB (MeNB) Interior deployment dozens of or micro-base station up to a hundred or radio access node.These micro-base stations can include example Such as small (small) base station, slightly (pico) base station, femto (femto) base station. The overlay area of these small base stations can also be accordingly called cell, picocell, milli Picocell etc..Hereinafter, the base station disposed in macrocell is referred to as " micro-base station ", And the cell in macrocell is referred to as " cell ".

In UDN networks, cell can help macrocell effectively to be shunted, so that full The demand of the demand of the overall traffic of sufficient network and individual consumer to bit rate.However, this The super density network of sample there may be some problems.One problem is user equipment (user Equipment, UE) very serious interference may be faced.Another problem is, due to The mobility of UE, it may occur however that the frequent switching between these cells.It is above-mentioned in order to solve Problem, is recently proposed a kind of virtual subdistrict mechanism.Can be connect by some cells or wirelessly Access point constitutes a virtual subdistrict.In communication process, in virtual subdistrict is wirelessly connect Access point access point of deciding, is responsible for all small cell in schedule virtual cell.

In UDN networks, the discovery of cell is for ensureing having from macro base station to cell Effect shunting is critically important.In the mechanism of virtual subdistrict, in order to promote the data based on virtual subdistrict Communication, the discovery of cell and the formation of virtual subdistrict are basic.If the discovery of cell and The delay of the formation of virtual subdistrict is larger, then will greatly reduce the performance of communication system.

In current cell discovery scheme, based on downlink (DL, i.e., from base station to UE signal) carries out cell discovery.The base station of cell or radio access node are with one Fixed periodic broadcasting finds signal, and UE is had found potential slight by detecting the discovery signal Area.If however, finding scheme to find cell so as to shape using such traditional cell It is used for if data communication into virtual subdistrict, it is difficult to lifting system performance.One main problem It is, because it is found that the periodicity of signal and the measurement and report to the signal, based on DL Delay of the signal to find cell is very long.Generally this postpones from hundreds of milliseconds to some Second.The long delay that cell finds causes the delay of the formation of virtual subdistrict, and then causes whole The severe degradation of the performance of individual system.

Therefore, it is desirable to have a solution to improve the discovery of cell and the shape of virtual subdistrict Into to promote data communication of the user equipment in virtual subdistrict.

The content of the invention

The purpose of embodiment of the disclosure is that offer is a kind of to be communicated using virtual subdistrict Solution.

According to the first aspect of the disclosure, there is provided a kind of communication party implemented in macro base station Method.The method includes being sent and user equipment (UE) to the candidate's cell in multiple cells The relevant configuration information of the up-link to be transmitted (UL) reference signal.Configuration information is by waiting Cell is selected for receiving UL reference signals to determine channel condition information, and channel shape State information indicates the channel quality of the channel between UE and each candidate's cell.The method is also The letter of predetermined condition is met including being received from least one of candidate's cell candidate cell Channel state information, and based on the channel condition information for receiving, it is determined that for the data of UE The virtual subdistrict of communication.Virtual subdistrict is small by one or more at least one candidate's cell Cell is formed.

According to the second aspect of the disclosure, there is provided a kind of implementation in the micro-base station of cell Communication means.The method includes that receiving the UL reference signals to be transmitted with UE from macro base station has The configuration information of pass.The method also includes being based on configuration information, and UL is received with reference to letter from UE Number to determine channel condition information.Channel condition information indicates the letter between UE and cell The channel quality in road.The method further included when channel condition information meets predetermined condition, By channel state information transmission to macro base station, so that macro base station is used to determine the data for UE The virtual subdistrict of communication.Virtual subdistrict is at least formed by cell.

According to the third aspect of the disclosure, there is provided a kind of communication means implemented in UE. The method includes to the small cell transmission UL reference signals of candidate so that candidate's cell be based on from The configuration information relevant with UL reference signals that macro base station is received receives UL reference signals It is used to determine channel condition information, and when channel condition information meets predetermined condition, will believes Channel state information is transferred to macro base station.Channel condition information indicates UE and each candidate's cell Between channel status information.

According to the fourth aspect of the disclosure, there is provided a kind of communicator in macro base station.Should Device includes configuration information transmission unit, is configured as to the candidate's cell in multiple cells The transmission configuration information relevant with the UL reference signals that UE to be transmitted.Configuration information is by candidate Cell is used to receive UL reference signals to determine channel condition information, and channel status Information indicates the channel quality of the channel between UE and each candidate's cell.The device is also wrapped Status information receiving unit is included, is configured as slight from least one of candidate's cell candidate Area receives the channel condition information for meeting predetermined condition, and virtual subdistrict determining unit, is matched somebody with somebody Be set to based on the channel condition information that receives, it is determined that for UE data communication it is virtual small Area.Virtual subdistrict is formed by one or more cells at least one candidate's cell.

A kind of the 5th aspect according to the disclosure, there is provided communication in the micro-base station of cell Device.The device includes configuration information receiving unit, is configured as being received and UE from macro base station The relevant configuration information of the UL reference signals to be transmitted.The device also determines including status information Unit, is configured as based on configuration information, and UL reference signals are received to determine letter from UE Channel state information.Channel condition information indicates the channel quality of the channel between UE and cell. The device further includes status information transmission unit, is configured as meeting in channel condition information During predetermined condition, by channel state information transmission to macro base station, so that macro base station is used to determine to use In the virtual subdistrict of the data communication of UE.Virtual subdistrict is at least formed by cell.

A kind of the 6th aspect according to the disclosure, there is provided communicator in UE.The dress Put including UL reference signal transmission units, be configured as being referred to the small cell transmission UL of candidate Signal, so that candidate's cell is relevant with UL reference signals based on what is received from macro base station Configuration information is used to determine channel condition information receiving UL reference signals, and in channel shape When state information meets predetermined condition, by channel state information transmission to macro base station.Channel status is believed Breath indicates the status information of the channel between UE and each candidate's cell.

A kind of the 7th aspect according to the disclosure, there is provided communication system.The system includes grand base Stand, the macro base station is included in the device of above fourth aspect discussion.The system also includes at least one The micro-base station of individual cell, the micro-base station of each cell is included in what the aspect of the above the 5th was discussed Device.The system further includes UE, and the UE is included in the dress that the aspect of the above the 6th is discussed Put.

Be will be understood that by being described below, according to the example embodiment of the disclosure, virtual subdistrict It is determined that being based on the UL reference signals transmitted in the uplink by UE.Needed whenever UE has When asking, such as when UE moves to new position or has data to transmission, UE can lead Dynamic transmission uplink reference signals, to find with cell and can to find or be formed to be used for Enter the virtual subdistrict of row data communication therewith.Macro base station can will be relevant with UL reference signals Configuration information is supplied to candidate's cell for use in detection UL reference signals.By this side Formula, finds signal to find cell compared to the downlink for being sent based on periodicity before, The delay relevant with the discovery of cell is considerably reduced, this so that improve integral systematicness Energy.Other benefits that the example embodiment of the disclosure is brought will be clear by being described below.

Brief description of the drawings

Detailed description below is read by reference to accompanying drawing, the embodiment of the present disclosure above-mentioned and its His objects, features and advantages will become prone to understand.In the accompanying drawings, with exemplary and unrestricted The mode of property shows some embodiments of the disclosure, wherein：

Fig. 1 is the example ring that device described herein and/or method can be carried out wherein The schematic diagram in border；

Fig. 2 shows the exemplary computer system being suitable to for realizing embodiment of the disclosure The block diagram of/server；

Fig. 3 shows the communication party implemented in macro base station of the one embodiment according to the disclosure The flow chart of method；

Fig. 4 show the one embodiment according to the disclosure in macro base station, micro-base station and user The schematic diagram of the communication process between equipment；

Fig. 5 is shown according to another embodiment of the disclosure in macro base station, micro-base station and use The schematic diagram of the communication process between the equipment of family；

Fig. 6 show another embodiment according to the disclosure in macro base station, micro-base station and use The schematic diagram of the communication process between the equipment of family；

Fig. 7 shows the communicator in macro base station of the one embodiment according to the disclosure Block diagram；

Fig. 8 shows the logical in the micro-base station of cell of the one embodiment according to the disclosure The block diagram of T unit；And

Fig. 9 shows the frame of the communicator in UE of the one embodiment according to the disclosure Figure.

Specific embodiment

The some exemplary embodiments shown in below with reference to the accompanying drawings describe the original of the disclosure Reason and spirit.It should be appreciated that describing these embodiments just for the sake of making those skilled in the art The disclosure is better understood when and then realized, and not limits the model of the disclosure by any way Enclose.

In the description of embodiment of this disclosure, term " including " and its similar term should Included when opening is interpreted as, i.e., " including but not limited to ".Term "based" should be understood It is " being based at least partially on ".Term " one embodiment " or " embodiment " should be managed Solve is " at least one embodiment ".

In the description of embodiment of this disclosure, user equipment (UE) may refer to terminal, Mobile terminal (MT), subscriber station (SS), portable subscriber station (PSS), movement station (MS), Or access terminal (AT), and UE, terminal, MT, SS, PSS, MS or AT Some or all functions can be included.UE can be any type of mobile terminal, Fixed terminal or portable terminal, including cell phone, website, unit, equipment, multimedia Computer, multimedia flat board, internet node, communicator, desktop computer, meter on knee Calculation machine, notebook, netbook computer, tablet PC, PCS Personal Communications System (PCS) Equipment, personal navigation equipment, personal digital assistant (PDA), audio/video player, number Code camera/camcorder, location equipment, television receiver, radio broadcast receiver, e-book Equipment, game station or its any combination, including these equipment accessory and peripheral hardware or its Any combination.It is also contemplated that be, it would be preferable to support any type of interface for user is (all Such as " wearable " circuit).

In the description of embodiment of this disclosure, term " base station (BS) " is sometimes referred to as " BS/ points ", " radio access node " or " transfer point ", with 3GPP terms Unanimously.It should be noted that term " BS/ points ", " node ", " transfer point " and " BS " There is same implication in this disclosure, and each of which can be represented, example As node B (NodeB or NB), evolved NodeB (eNodeB or eNB), Radio heads (RH), Remote Radio head end (RRH), relaying, such as femto Base station, low power nodes of femto base station etc..The coverage of base station, can provide service Geographic area be referred to as cell.

In the description of embodiment of the disclosure, term " macro base station " refer to coverage compared with Big base station, it is also sometimes referred to as MeNB (Macro eNB).The covering model of macro base station Enclose and be referred to as macrocell.Term " micro-base station " refers to the less base station of coverage, its Including micro, slight (pico) base station, femto (femto) base station etc..The covering model of micro-base station Enclose and be referred to as cell, it also includes picocell, Femto cell etc..Macro base station it is grand Multiple cells can be included in cell.

Fig. 1 is the example ring that device described herein and/or method can be carried out wherein The schematic diagram in border 100.Example context 100 shows in super density network (UDN) Examples section.As shown in figure 1, macro base station 110 has the geographical model for served user equipment Enclose 150, i.e. macrocell 150.Multiple cells 160 are deployed in macrocell 150, each Cell is serviced by corresponding micro-base station 121-127 and 131-38.The covering of multiple cells Scope can be overlapped.These cells can be used in unloading the data communication of macro base station, so that can To improve the total throughout of system and the data transfer bit speed of unique user.

In UDN networks, for the channel disturbance reduced between excessive cell and it is Avoid frequent switchings of the UE between cell, introduce virtual subdistrict.One virtual small Area is by multiple slight district's groups into and can coming to be communicated with user equipment as single cell. In the example of fig. 1, of the cell formation that micro-base station 121-127 is serviced is virtual small Area.The virtual subdistrict can be communicated as a cell with UE 140.Each is virtual Cell can also have master's cell, be responsible for whole virtual subdistrict data transmission scheduling, Scheduling of resource etc., for sending schedule information so as to reality to other cells in virtual subdistrict Existing cooperation transmission.In the example of fig. 1, the cell that micro-base station 124 is serviced can be this Master's cell of virtual subdistrict.

In embodiment of the disclosure, UE 140 can be connected to macro base station 110 and small cell Micro-base station, such as micro-base station 124.That is, UE 140 has the ability of dual link. Generally, the cell for forming virtual subdistrict is active, and is used to be positioned at the virtual subdistrict In the range of UE provide service.One or more in the range of macrocell 150 are slight Area is also in sleep state.For example, the cell that micro-base station 131-138 is serviced is in figure Sleep state is in 1 example.

Although showing some cells that macrocell 150 includes in Fig. 1 and therein swashing Cell living and sleep cell, in some other embodiments, macrocell 150 can include More or less cell, more or less activation cell and more or less sleep Sleep cell.And, one is formd in macrocell 150 virtually although being shown in Fig. 1 , in some other embodiments, can also there are two or more virtual cells in cell. Additionally, though it is shown that a UE 140, in other embodiments, it is also possible to exist more UE be used to be serviced by the virtual subdistrict for showing or other virtual subdistricts, it is also possible to by certain Cell is directly serviced by macrocell 150.

Fig. 2 shows the exemplary computer system/clothes being suitable to for realizing the embodiment of the present disclosure The block diagram of business device 12.In certain embodiments, macro base station 110, micro-base station 121-127 and 131-138 and UE 140 can include one or more computer system/servers 12 and/ Or the one or more assemblies in computer system/server 12.The department of computer science that Fig. 2 shows System/server 12 is only an example, to the function of embodiment of the disclosure and should not be used Range band carrys out any limitation.

As shown in Fig. 2 computer system/server 12 is showed in the form of universal computing device. The component of computer system/server 12 can be included but is not limited to：One or more treatment Device or processing unit 16, system storage 28, connection different system component (including system Memory 28 and processing unit 16) bus 18.

Bus 18 represents one or more in a few class bus structures, including memory bus or Person's Memory Controller, peripheral bus, AGP, processor or use are various total The local bus of any bus structures in cable architecture.For example, these architectures include But it is not limited to industry standard architecture (ISA) bus, MCA (MAC) Bus, enhanced isa bus, VESA's (VESA) local bus and Periphery component interconnection (PCI) bus.

Computer system/server 12 typically comprises various computing systems computer-readable recording medium.This A little media can be any usable medium that can be accessed by computer system/server 12, bag Volatibility and non-volatile media are included, moveable and immovable medium.

System storage 28 can include that the computer system-readable of form of volatile memory is situated between Matter, such as memory 30 and/or buffer 32.Computer system/server 12 can enter one Step includes that other removable/nonremovable, volatile/non-volatile computer system storages are situated between Matter.Although not shown in Fig. 2, can provide for may move non-volatile magnetic disk (for example " floppy disk ") read-write disc driver, and to removable anonvolatile optical disk (for example CD-ROM, DVD-ROM or other optical mediums) read-write CD drive.At these In the case of, each driver can be by one or more data media interfaces and bus 18 It is connected.Memory 28 can include at least one program product, and the program product has one group (for example, at least one) program module, these program modules are configured to perform each of the disclosure The function of embodiment.

With one group of program/utility 40, Ke Yicun of (at least one) program module 42 In such as memory 28, such program module 42 includes --- but being not limited to --- grasps for storage Make system, one or more application program, other program modules and routine data, these The realization of network environment is potentially included in each or certain combination in example.Program module 42 Generally perform the function and/or method in the described embodiment of the disclosure.

As needed, computer system/server 12 can also be with one or more external equipments (such as display device 24, storage device 14 etc.) communicates, and can also make with one or more The equipment communication that can interact with the computer system/server 12 of user, and/or with cause this It is any that computer system/server 12 can be communicated with one or more other computing devices Equipment (such as network interface card, modem etc.) communicates.This communication can by input/ Output (I/O) interface 22 is carried out.Also, computer system/server 12 can also pass through Network adapter 20 and one or more network (such as LAN (LAN), wide area network (WAN) and/or public network, such as internet) communication.As illustrated, Network adaptation Device 20 is communicated by bus 18 with other modules of computer system/server 12.Should be bright In vain, although not shown in, can combine computer system/server 12 use other hardware And/or software module, including but not limited to：Microcode, device driver, redundant processing unit, External disk drive array, RAID system, tape drive and data backup storage system Deng.

Embodiment of the disclosure is described more fully below.Embodiment of the disclosure provides a kind of using In the solution communicated using virtual subdistrict.The solution is based on what is sent by UE Up-link (UL) reference signal finds cell, and determines to lead to for the data of UE The virtual subdistrict of letter.Being formed for virtual subdistrict can be based on the cell for being found.The solution party Case is related to the macro base station of the macrocell being located therein in UE, is possibly used for forming virtual subdistrict The operation performed in the micro-base station and UE of cell.

With reference first to Fig. 3, the communication means 300 of the disclosure is described from the angle of macro base station Flow chart.Although Fig. 3 shows the example frame of method 300, in certain embodiments, method 300 can include other frame, less frame, different frames or with Fig. 3 in describe The frame that these frames are differently arranged.Additionally or alternatively, two or more of method 300 Frame can concurrently be performed.In certain embodiments, method 300 can be by such as Fig. 1 Macro base station 110 perform.The coverage of macro base station includes that multiple cells are (or slight The radio access node in area).

As shown in figure 3, method 300 is included in the step 310 from macro base station to multiple cells In candidate's cell send the configuration information relevant with the UL reference signals that UE to be transmitted. In certain embodiments, the configuration information is sent to the radio access node of candidate's cell. In some embodiments, the UE be in macro base station macrocell scope in, and with grand base Foundation of standing is connected.

In accordance with an embodiment of the present disclosure, UE is for example moving to new region and/or is having data industry When business will be transmitted, then can broadcast UL reference signals to expect to obtain the cell for data communication. In certain embodiments, UL reference signals can include detection reference signal (sounding reference signal).In other embodiments, UE can also send other reference signals. In the network based on virtual subdistrict mechanism, macro base station is coordinated multiple slight in its coverage Area, therefrom to determine the virtual subdistrict of the data communication for UE.

In order to determine whether certain cell is suitably formed for for UE provides the virtual small of service Area, important factor is channel, such as UL channels between the cell and UE Channel quality.Cell can receive the UL reference signals from UE, and based on the UL Reference signal indicates the channel condition information (channel of channel quality between the two to measure State information, CSI).In order that obtaining cell can receive the UL from UE Can be sent to for the configuration information relevant with the UL reference signals small by reference signal, macro base station Cell.Cell receives UL reference signals based on the configuration information.In certain embodiments, The configuration information relevant with UL reference signals can include but is not limited to the biography of UL reference signals Defeated cycle, the time-frequency location for transmitting information relevant with the decoding of UL reference signals etc.. In certain embodiments, UE sets up with macro base station and is connected, thus macro base station can be prior Know the configuration information.

In embodiment of the disclosure, macro base station is in the transmission configuration relevant with UL reference signals Before information, can also determine some potentially from the multiple cells in the range of macrocell Candidate's cell of service can be provided for UE, and only passed to identified candidate's cell The configuration information of defeated UL reference signals.Therefore, candidate's cell refers to macrocell and is covered Multiple cells in be likely to form UE to be used for data communication virtual subdistrict.At some In embodiment, candidate's cell can include being in dormant cell, i.e., those are unused In the cell for forming virtual subdistrict.In these embodiments, the UE that macro base station can be known Position, and by the sleep with (for example, within the predetermined threshold) closer to the distance of UE Cell is defined as candidate's cell.Alternatively or additionally, candidate's cell can be included Cell in the virtual subdistrict of formation.In this case, macro base station can be according to UE's Position determines that UE is located in the coverage of established virtual subdistrict, and will form the void The cell for intending cell is used as candidate's cell.In some other embodiments, macro base station can be with By all cells in the range of macrocell, it is defined as candidate's cell.The theme of the disclosure Scope be not limited in this respect.

The situation of the cell in the range of position and macrocell based on UE, it is understood that there may be three Plant different scenes.The first possible scene is that UE moves to no virtual subdistrict to be present Region.In other words, in this region, the cell around UE is in sleep state. Second possible scene is that UE moves into the region that there is established virtual subdistrict. The third possible scene is there is established virtual subdistrict in the region residing for UE There are one or more cells slept.Will hereinafter enter for these three possible scenes Row is discussed in detail.

Method 300 marches to step 320, and wherein macro base station is from least in candidate's cell Individual candidate's cell receives the channel condition information CSI for meeting predetermined condition.

As previously mentioned, each candidate's cell receive it is relevant with UL reference signals Configuration information after, can be received based on the configuration information UE broadcast UL with reference to letter Number, and then estimate the channel quality of channel between candidate's cell and UE (i.e., Channel condition information).In certain embodiments, CSI can be received including candidate's cell UL reference signals intensity.For example, CSI can be by Reference Signal Received Power (received Signal reference power, RSRP), Reference Signal Received Quality (received signal Reference quality, RSRQ) or CQI (channel quality Indicator, CQI) in one or more represent.Due to each candidate's cell with The distance between UE is different or link condition is different, and the small cell measurement of each candidate is obtained CSI may be different.In certain embodiments, if the CSI of candidate's cell determination expires Sufficient predetermined condition, such as RSRP or RSRQ are higher than predetermined threshold, and candidate's cell then may be used With by identified CSI feedback to macro base station.

Receive one or more candidate's cells feedback CSI after, in the step of method 300 In rapid 330, macro base station determines the void of the data communication for UE based on the CSI for receiving Intend cell.In certain embodiments, macro base station can be made and void based on some predetermined policies Intend the relevant decision-making of cell.In certain embodiments, macro base station will can also have with virtual subdistrict The information transfer of pass to the cell in UE and the virtual subdistrict, with promote UE with it is virtual Data communication between cell.In accordance with an embodiment of the present disclosure, the virtual subdistrict that macro base station determines Can be formed by one or more cells in the candidate's cell for therefrom receiving CSI.Base In above-mentioned different scenes, the virtual subdistrict that macro base station determines may be different.

From the above description, it can be seen that the determination of virtual subdistrict is based on by UE in the uplink The UL reference signals of transmission.When UE has demand, such as when UE moves to new position When putting or have data to transmission, UE can with active transmission uplink reference signals, so as to It was found that with cell and can find or form virtual subdistrict for entering row data communication therewith. Macro base station can by the configuration information relevant with UL reference signals be supplied to candidate's cell so as to For detecting UL reference signals.In this way, compared to before based on periodically transmission Downlink find that signal finds cell, the delay relevant with the discovery of cell shown Write ground reduce, this so improve overall system performance.

Fig. 4 to show and be located at what no virtual subdistrict was present in above-mentioned the first scene, i.e. UE The schematic diagram of the communication process 400 in the scene in region.The process be related to considered UE, The micro-base station of the sleep cell around the macro base station and UE of the macrocell residing for UE.

In step sl, macro base station is by the configuration relevant with the UL reference signals that UE to be transmitted Information transfer gives each sleep micro-base station.In certain embodiments, involved sleep micro-base station Small cell including being defined as candidate's cell in the range of macrocell and by macro base station Base station.For example, sleep micro-base station include being within predetermined threshold with the distance of UE and In dormant micro-base station.In certain embodiments, it is relevant with UL reference signals to match somebody with somebody Confidence breath can include but is not limited to UL reference signals transmission cycle, transmission time-frequency location, Information relevant with the decoding of UL reference signals etc..In certain embodiments, UE has been Set up with macro base station and be connected, thus macro base station can know the configuration of the UL reference signals of UE Information.

In step s 2, each micro-base station for receiving configuration information is based on the configuration information, UL reference signals are received from UE and measure the channel of channel between the micro-base station and UE Quality information CSI.In certain embodiments, micro-base station can estimate UL reference signals RSRP or RSRQ.In other embodiments, micro-base station can also be referred to other specification Show the channel quality between the micro-base station and UE.The scope of the theme of the disclosure is in this regard not It is restricted.In some other embodiments, configuration information that micro-base station is also based on receiving, Such as decoded information in configuration information decodes the UL reference signals, and the decoding is used With the foundation of the precoding of the data communication of the UE after work.

In step s3, if micro-base station determines whether the CSI of measurement meets predetermined condition, And when predetermined condition is met, such as RSRP or RSRQ be more than predetermined threshold when, by institute The CSI of measurement is sent to macro base station.

In step s 4, macro base station be based on the CSI that receives from one or more micro-base stations come Determine how to form new virtual subdistrict.In certain embodiments, macro base station can be from transmission One or more cells are selected in the corresponding cell of one or more micro-base stations of CSI to be used for Form new virtual subdistrict.For example, macro base station can select several with CSI higher Cell is used to form new virtual subdistrict.Alternatively or additionally, macro base station can be based on hair The position of the cell of CSI is sent, selects several adjacent cells to be used to form virtual small Area.Macro base station can also determine how to form new virtual subdistrict according to other strategies.For example, The corresponding slight district's groups of all micro-base stations that macro base station can send CSI synthesize new virtual Cell, or some cells are therefrom randomly choosed out for forming virtual subdistrict.

In certain embodiments, after it is determined that forming new virtual subdistrict, macro base station can be with The configuration information relevant with the virtual subdistrict.In one embodiment, macro base station is new from being formed A cell is selected in the cell of virtual subdistrict as the small cell of master.Master in virtual subdistrict Cell can be responsible for the scheduling of the virtual subdistrict.For example, main cell can be responsible for virtual small The scheduling of the resource of all cells in area.In certain embodiments, main cell can be used for Schedule information is sent to other cells in virtual subdistrict, to realize cooperation transmission.For example, Main cell can be responsible for sending control channel to UE.Main cell can also be responsible for virtually The scheduling of the data communication of the UE that cell is serviced, for example coordinate virtual subdistrict in one or Multiple cells are used to transmit data to UE or receive data from UE.The main cell of service Micro-base station can be referred to as main transfer point (master transport point, MTP), main nothing Line access node or main micro-base station.

In another embodiment, macro base station can also configure the virtual subdistrict of new virtual subdistrict ID (identifier, identifier).Alternatively or additionally, macro base station can also configure new void Intend cell transmission pattern, and/or each cell in virtual subdistrict downlink (UL) configuration (for example, cycle, time-frequency location, code encoding/decoding mode etc.) of reference signal With the configuration (for example, cycle, time-frequency location, code encoding/decoding mode etc.) of synchronizing signal.UL joins It can be in one example CSI-RS (channel condition information-reference signal) to examine signal.

In step s 5, macro base station is to the corresponding micro- base of each cell for forming virtual subdistrict Stand and send activate message and the information relevant with virtual subdistrict.In certain embodiments, respond In the activate message for receiving, micro-base station can be switched to state of activation, such that it is able to be used for UE enters row data communication.In certain embodiments, the information relevant with virtual subdistrict includes void Intend cell ID and form the physical district ID of each cell of virtual subdistrict.Virtual subdistrict ID can be used for addressing whole virtual subdistrict.In this way, the every of virtual subdistrict is formed Individual cell is known that it is used to form virtual subdistrict, and also knows virtual subdistrict ID And the physical district ID of other member's cells.

Alternatively or additionally, the information relevant with virtual subdistrict can include with virtual subdistrict in It is responsible for the relevant configuration information of master's cell of scheduling.For example, the physical district ID of main cell, Or the other configurations information of main cell.In some other embodiments, have with virtual subdistrict The information of pass can also include having with the DL reference signals of each cell for forming virtual subdistrict The configuration information of pass or the configuration information relevant with the synchronizing signal of each cell.For example, The cycle of DL reference signals and/or synchronizing signal, time-frequency location information relevant with decoding etc. Deng.Thus, cell is known that in state of activation how to send DL reference signals and same Step signal.In other embodiment, DL reference signals and/or synchronous letter with cell Number the relevant information of configuration can also be included in activate message in be transferred to micro-base station.

In step s 6, macro base station sends the information relevant with virtual subdistrict to UE.In the step The information sent in rapid can be sent to the relevant with virtual subdistrict of micro-base station in step s 5 Information it is same or similar.In certain embodiments, virtual subdistrict can be allocated multiple use In the virtual subdistrict ID for identifying the virtual subdistrict.For example, virtual subdistrict service can be directed to Each UE, distributes a corresponding virtual subdistrict ID.In this case, macro base station can be with Virtual subdistrict ID corresponding with the UE is only sent to this UE.Macro base station can also be in step Multiple virtual subdistrict ID of virtual subdistrict are sent in virtual subdistrict in rapid S5 each is slight Area.In some other cases, for example in multi-user-multiple-input and multiple-output (multiple User-multiple input multiple output, MU-MIMO) application in, can be many Individual user distributes common virtual subdistrict ID.

In the step s 7, UE can also feed back CSI to master's cell of virtual subdistrict.One In a little embodiments, each micro-base station of virtual subdistrict can be according to DL reference signals with confidence Cease to broadcast DL reference signals.UE is received and virtual subdistrict from macro base station in step s 6 Each cell the relevant configuration information of DL reference signals after, can be based on the configuration Information receives DL reference signals, and measures the DL channels from each micro-base station to UE Channel quality obtaining CSI.UE can by the CSI report to virtual subdistrict the micro- base of master Stand.The CSI for obtaining herein is conducive to the subsequent data transmission of micro-base station and UE.For example, micro- Base station can decode the CSI, and using the decoding as prelisting during subsequent data transmission The foundation of code.It should be appreciated that step S7 is optional.

In step s 8, UE and virtual subdistrict (that is, forming each cell of virtual subdistrict) Between can perform data communication process.In this data communication process, the master of virtual subdistrict Cell can be responsible for scheduling.

Fig. 5 to show and be located at established virtual subdistrict in above-mentioned second scene, i.e. UE In the range of scene in communication process 500 schematic diagram.The process be related to considered UE, Cell in the macro base station of the macrocell residing for UE and established virtual subdistrict is corresponding Micro-base station.It is noted that these cells or micro-base station are in state of activation.

In process 500, step S1 to S3 is similar with the step S1 to S3 in process 400. Difference is that macro base station sends out the configuration information relevant with the UL reference signals that UE to be transmitted The micro-base station of the cell in established virtual subdistrict is given, is matched somebody with somebody based on this by these micro-base stations Confidence ceases to receive UL reference signals and measurement CSI, and by being measured in these micro-base stations The CSI of predetermined condition is met by measured CSI report to macro base station.

In certain embodiments, the step S3 in process 500 can also additionally include void Between each cell and each user equipment of the virtual subdistrict current service in plan cell Channel state information transmission to macro base station.For example, due to the master's cell in virtual subdistrict Micro-base station can be known between each cell in virtual subdistrict and corresponding user equipment CSI, thus this CSI can be reported by main micro-base station.In certain embodiments, can be only Report one or some users of one or some cells and current service in virtual subdistrict CSI between equipment.The scope of the theme of the disclosure is not limited in this respect.

Based on the CSI received from the cell of virtual subdistrict, including currently taken with virtual subdistrict The UE of business relevant CSI, macro base station may determine whether by the virtual subdistrict in step s 4 To service UE.Macro base station can perform this based on some strategies, such as some optimisation strategies Individual decision-making.In certain embodiments, macro base station is based on the CSI for receiving, it is determined that by this Virtual subdistrict through existing is used for the data communication of UE.That is, macro base station adjusts UE Spend in established virtual subdistrict.In other embodiments, macro base station is based on what is received CSI, it may be determined that established virtual subdistrict is divided into two or more new virtual subdistricts, And one of those new virtual subdistrict is used for the data communication of considered UE.New point The virtual subdistrict cut can include one or more cells in original virtual subdistrict.At this In a little embodiments, the UE that macro base station correspondingly can also be serviced previous virtual subdistrict points In a new virtual subdistrict after not being dispatched to by splitting.

No matter original virtual subdistrict is retained for servicing this new UE or will be original Virtual subdistrict is split to service the UE, is determined for servicing the virtual subdistrict of UE The certain adjustment experienced is (even if retaining the feelings that original virtual subdistrict is used to service UE In condition, due to increased new UE in virtual subdistrict, thus the virtual subdistrict also correspond to through Adjustment is gone through).Therefore, macro base station can reconfigure the virtual subdistrict phase for servicing the UE The information of pass.These information can include discussed above with respect to Fig. 4 in those of one or Person is multiple.For example, macro base station can use new virtual subdistrict ID.Alternatively or additionally, Macro base station can also configure the transmission pattern of virtual subdistrict, and/or each in virtual subdistrict The configuration and the configuration of synchronizing signal of downlink (UL) reference signal of cell.Protecting In the case of staying original virtual subdistrict, macro base station may decide that the master caused in the virtual subdistrict Cell continues to be responsible for scheduler task, it is also possible to select another cell as the small cell of master. In the case where original virtual subdistrict is split, macro base station can be virtual small for each split Area determines main cell.

In step s 5, macro base station sends to each cell in the virtual subdistrict of service UE The information relevant with the virtual subdistrict.The information can be included but is not limited to：Virtual subdistrict ID, It is responsible for scheduling in the physical district ID of each cell of formation virtual subdistrict and virtual subdistrict The relevant configuration information of master's cell and with each cell for forming virtual subdistrict under The relevant configuration information of downlink reference signal.

In step s 6, macro base station also sends the information relevant with the virtual subdistrict to UE.Cross Step S6 in journey 500 is similar with the step S6 in process 400.

In the step s 7, UE can also feed back CSI to master's cell of virtual subdistrict, and In step s 8, can between UE and virtual subdistrict (that is, forming the cell of virtual subdistrict) To perform data communication process.The step in step S7 and S8 and process 400 in process 500 Rapid S7 is similar with S8.

Exist in the region that Fig. 6 shows according to residing for above-mentioned the third scene, i.e. UE Also there is the communication process in the scene of one or more cells slept the virtual subdistrict of formation 600 schematic diagram.The process be related to the macrocell residing for considered UE, UE macro base station, The corresponding micro- base of cell in sleep micro-base station and established virtual subdistrict around UE Stand.

In process 600, the step S1 in step S1 to S2 and process 400 or 500 is extremely S2 is similar to.Difference is that macro base station is matched somebody with somebody relevant with the UL reference signals that UE to be transmitted Confidence breath is sent to around the micro-base station of the cell in established virtual subdistrict and UE Sleep micro-base station, and UL reference signals are received based on the configuration information by these micro-base stations With measurement CSI.

In step s3, those of the CSI that meets predetermined condition are measured in sleep micro-base station Micro-base station is by measured CSI report to macro base station.Step in the step and process 400 S3 is similar to.

In step s 4, satisfaction is measured in the micro-base station of the cell in virtual subdistrict predetermined Those micro-base stations of the CSI of condition are by measured CSI report to macro base station.With process 500 In step S3 be similar to, the micro-base station of the cell in established virtual subdistrict, for example should The main micro-base station of virtual subdistrict can also be virtual small with this by the small cell of each in virtual subdistrict Channel state information transmission between each user equipment of area's current service is to macro base station.

Based on the CSI received from the micro-base station of cell, macro base station in step s 5 can be true It is fixed whether whether the cell slept to be merged into established virtual subdistrict or by shape Into virtual subdistrict service UE.Macro base station can, such as some optimizations tactful based on some Strategy performs this decision-making.In certain embodiments, macro base station can be from receiving CSI's One or more cells are selected in cell of sleeping, and the cell for selecting is merged into In the virtual subdistrict of formation.In certain embodiments, macro base station can be determined not by established Virtual subdistrict is serviced, but the cell for selecting is used to form new virtual subdistrict.Another In outer some embodiments, macro base station can determine to service the UE by established virtual subdistrict, And the virtual subdistrict need not adjust.Or, in certain embodiments, can also be by the void Intend cell and be divided into multiple virtual subdistricts, and be used for using a virtual subdistrict after segmentation The data transfer of UE.

Regardless of macro base station decision-making in step s 5, it is determined for servicing the virtual of UE Certain adjustment that cell experiences using original virtual subdistrict (even if directly serviced In the case of UE, due to increased new UE in virtual subdistrict, thus the virtual subdistrict also phase When in experienced adjustment).Therefore, macro base station can be reconfigured and service the virtual of the UE The related information of cell.In those of these information can include being discussed above with respect to Fig. 4 One or more.For example, macro base station can use new virtual subdistrict ID.Alternatively or Additionally, macro base station can also configure the transmission pattern of virtual subdistrict, and/or virtual subdistrict In each cell UL reference signals configuration and the configuration of synchronizing signal.In directly profit In the case of original virtual subdistrict, macro base station may decide that the master caused in the virtual subdistrict Cell continues to be responsible for scheduler task, it is also possible to select another cell as the small cell of master. In other cases, macro base station can be that the new virtual subdistrict for being formed determines main cell.

In step s 6, macro base station sends to each cell in the virtual subdistrict of service UE The information relevant with the virtual subdistrict.The information can be included but is not limited to：Virtual subdistrict ID, It is responsible for scheduling in the physical district ID of each cell of formation virtual subdistrict and virtual subdistrict The relevant configuration information of master's cell and with each cell for forming virtual subdistrict under The relevant configuration information of downlink reference signal.If servicing the virtual subdistrict of UE also includes sleeping The cell slept, macro base station also sends base of the activate message to these cells in step s 6 Stand, so that these are switched into state of activation in dormant cell.

In the step s 7, macro base station also sends the information relevant with the virtual subdistrict to UE.Cross Step S7 in journey 600 is similar with the step S6 in process 400 or 400.

In step s 8, UE can also feed back CSI to the master's cell in virtual subdistrict, and And in step s 9, UE and virtual subdistrict (that is, form each cell of virtual subdistrict) Between can perform data communication process.Step S8 and S9 and process 400 in process 600 Or step S7 in 500 is similar with S8.

Although Fig. 4-6 shows a UE, for other each UE in macrocell, Similar process can be performed, is used to be communicated using virtual subdistrict.Although Fig. 4-6 shows Gone out the exemplary step of process 400-600, in certain embodiments, process 400,500 or 600 can include other step, less step, different steps or with Fig. 4-6 The step of these steps of middle description are differently arranged.For example, in process 400 and 500 Step S8 in step S7 and process 600 can be omitted.Additionally or alternatively, process 400th, 500 or 600 two or more steps can concurrently be performed.For example, process Step S6 and S7 in step S5 and S6 and process 600 in 400 and 500 can be simultaneously Occur capablely.

Fig. 7 shows that the utilization in macro base station of the one embodiment according to the disclosure is virtually small The block diagram of the device 700 that area is communicated.The coverage of the macro base station includes multiple cells. The device 700 for example can be in macro base station 110 as shown in Figure 1 or can be included Wherein.

As shown in fig. 7, device 700 include configuration information transmission unit 710, be configured as to Candidate's cell in multiple cells sends to be had with the uplink reference signals that UE to be transmitted The configuration information of pass, wherein configuration information are used to receive uplink reference letter by candidate's cell Number to determine channel condition information, and channel condition information indicates UE small with each candidate The channel quality of the channel between cell.Device 700 also includes status information receiving unit 720, It is configured as being received from least one of candidate's cell candidate cell and meets predetermined condition Channel condition information；And virtual subdistrict determining unit 730, it is configured as being based on receiving Channel condition information, it is determined that the virtual subdistrict of the data communication for UE, wherein virtual small Area is formed by one or more cells at least one candidate's cell.

According to some embodiments, device 700 may further include candidate's cell determining unit, It is configured as that sleep state and the small cell with the distance of UE within predetermined threshold will be in It is defined as candidate's cell.

According to some embodiments, it is single that virtual subdistrict determining unit 730 can include that cell is selected Unit, is configured as, based on channel condition information, one being selected from least one candidate's cell Or multiple cells.Virtual subdistrict determining unit 730 can also include the first determining unit, quilt It is configured to when UE is located in the range of established virtual subdistrict, it is determined that will be selected small Cell is used to be merged into established virtual subdistrict or for forming new virtual subdistrict；And Second determining unit, is configured as when UE is not located in the range of established virtual subdistrict, It is determined that selected cell is used to form new virtual subdistrict.

According to some embodiments, device 700 may further include the small cell selection unit of master, It is new from being formed for when it is determined that selected cell is used to form new virtual subdistrict A cell is selected in the cell of virtual subdistrict as main cell, wherein lead small cell bearing Blame the scheduling of virtual subdistrict.

According to some embodiments, device 700 may further include cell activation unit, quilt The small cell transmission activate message to formation virtual subdistrict is configured to activate one or more Cell.

According to some embodiments, UE may be located in the range of established virtual subdistrict, and And device 700 may further include candidate's cell determining unit, it is configured as having been formed Virtual subdistrict in cell be defined as candidate's cell.

According to some embodiments, virtual subdistrict determining unit 730 can be included in the following Any one：First determining unit, is configured as based on channel condition information, it is determined that will have been formed Virtual subdistrict be used for UE data communication；Or second determining unit, it is configured as being based on Channel condition information, it is determined that one or more cells in established virtual subdistrict are used for into shape In the virtual subdistrict of Cheng Xin, for use in the data communication of UE.

According to some embodiments, above-mentioned channel condition information is the first channel condition information, and Status information receiving unit 720 can be configured to the master from established virtual subdistrict Cell receives second channel status information, and wherein second channel status information indicates established The letter between cell and the currently serviced UE in established virtual subdistrict in virtual subdistrict The channel quality in road.In these embodiments, virtual subdistrict determining unit is configured to Determine to lead to for the data of UE based on the first channel condition information and second channel status information The virtual subdistrict of letter.

According to some embodiments, device 700 may further include virtual subdistrict information transfer list Unit, is configured as the information transfer relevant with virtual subdistrict to UE and forms virtual subdistrict Each cell, wherein the information relevant with virtual subdistrict includes or many in the following ：The virtual subdistrict ID of virtual subdistrict, the physics of each cell of formation virtual subdistrict are small Configuration information, Yi Jiyu area ID relevant with the master's cell for being responsible for scheduling in virtual subdistrict Form the relevant configuration information of the downlink reference signal of each cell of virtual subdistrict.

Fig. 8 is shown in the micro-base station in cell of the one embodiment according to the disclosure The block diagram of the device 800 communicated using virtual subdistrict.The device 800 for example can be as Micro-base station 121-127 or 131-138 shown in Fig. 1, or can be included therein.

As shown in figure 8, device 800 include configuration information receiving unit 810, be configured as from Macro base station receives the configuration information relevant with the uplink reference signals that UE to be transmitted.This is small Cell is in the coverage of macro base station.Device 800 also includes status information determining unit 820, it is configured as based on configuration information, uplink reference signals are received so as to true from UE Determine channel condition information.Channel condition information indicates the channel of the channel between UE and cell Quality.Device 800 further includes status information transmission unit 830, is configured as in channel When status information meets predetermined condition, by channel state information transmission to macro base station, for grand base Stand for the virtual subdistrict for determining the data communication for UE, wherein virtual subdistrict is at least by small Cell is formed.

According to some embodiments, cell can be in sleep state and with the distance of UE Cell within predetermined threshold, and determined to be used to cell be merged into by macro base station It is used to form new virtual subdistrict in the virtual subdistrict of formation or by cell.

According to some embodiments, device 800 may further include activate message receiving unit, It is configured as receiving activate message from macro base station；And state of activation switch unit, it is configured as In response to activate message, state of activation is switched to.

According to some embodiments, cell can be included in the small of established virtual subdistrict Cell, and determined to be used for established virtual subdistrict based on channel condition information by macro base station The data communication of UE or determine at least by slight area be used to being formed new virtual subdistrict so as to For the data communication of UE.

According to some embodiments, cell can be responsible scheduling in established virtual subdistrict Main cell.If above-mentioned channel condition information is the first channel condition information, status information is passed Defeated unit 830 is configured to transmit second channel status information to macro base station, wherein the Two channel condition informations indicate the cell in established virtual subdistrict virtual with established The channel quality of the channel between the currently serviced UE of cell.

According to some embodiments, device 800 further includes virtual subdistrict information receiving unit, It is configured as receiving the information relevant with virtual subdistrict from macro base station, wherein relevant with virtual subdistrict Information include the following in one or more：The virtual subdistrict ID of virtual subdistrict, shape It is responsible for scheduling into the physical district ID of each cell of virtual subdistrict and virtual subdistrict The relevant configuration information of main cell and descending with each cell for forming virtual subdistrict The relevant configuration information of link reference signal.

According to some embodiments, cell can be defined as leading to for the data of UE by macro base station Master's cell in the virtual subdistrict of letter.In these embodiments, device 800 can be further Including downlink reference signal transmission unit, it is configured as being referred to UE communicating downlinks Signal；And UE status information receiving units, it is configured as receiving the 3rd channel shape from UE State information is used for the data communication with UE, wherein the 3rd channel condition information indicates UE and shape Into the channel quality of the channel between each cell of virtual subdistrict.

Fig. 9 shows that the utilization in UE of the one embodiment according to the disclosure is virtually small The block diagram of the device 900 that area is communicated.The device 900 for example can be as shown in Figure 1 UE 140, or can be included therein.

As shown in figure 9, device 900 includes UL reference signal transmissions unit 910, it is configured It is to the small cell transmission uplink reference signals of candidate, so that candidate's cell is based on from grand base The configuration information relevant with uplink reference signals that station receives receive up-link ginseng Examine signal to be used to determine channel condition information, and meet predetermined condition in channel condition information When, by channel state information transmission to macro base station.Channel condition information indicates UE to be waited with each Select the status information of the channel between cell.

According to some embodiments, candidate's cell can be including at least one in the following： Small cell in sleep state and with the distance of UE within predetermined threshold；And Cell in the virtual subdistrict of formation, wherein UE are located at the scope of established virtual subdistrict It is interior.

According to some embodiments, device 900 may further include virtual subdistrict information and receive Unit, is configured as receiving the information relevant with virtual subdistrict from macro base station, wherein small with virtual The relevant information in area includes one or more in the following：The virtual subdistrict of virtual subdistrict It is responsible in ID, the physical district ID of each cell of formation virtual subdistrict and virtual subdistrict The relevant configuration information of master's cell of scheduling and with each the small cell for forming virtual subdistrict The relevant configuration information of downlink reference signal.

According to some embodiments, foregoing channel state information is the first channel condition information, dress Put 900 and may further include downlink reference signal receiving unit, be configured as from formation Each of virtual subdistrict cell receives downlink reference signal.Device 900 can also include UE status information determining units, are configured as based on the downlink reference signal for receiving, Data communication of the second channel status information for UE is determined, wherein the second status information refers to Show the channel quality of the channel between UE and each cell for forming virtual subdistrict.Device 900 UE status information transmission units are may further include, is configured as believing second channel state Breath is transferred to master's cell of responsible scheduling in virtual subdistrict.

As can be seen that the device 700 of Fig. 7 can be realized appointing above with respect in such as Fig. 3 to 6 One it is shown in the drawings during on the operation described by macro base station, the device 800 of Fig. 8 can be with Realize the operation described by the micro-base station on cell during these, and Fig. 9 device 900 can realize during these on the process described by UE.Although being not further indicated, Device 700,800 or 900 can include more functional units to realize combining Fig. 3 to 6 Described multiple embodiments.

Embodiment of the disclosure can also provide a kind of communication system, and the communication system includes Macro base station, the macro base station is included above with respect to the device 700 described by Fig. 7.The communication system Also include the micro-base station of at least one cell, these cells are in the coverage of macro base station It is interior, and each micro-base station is including above with respect to the device 800 described by Fig. 8.The communication system System further includes UE, and the UE is included above with respect to the device 900 described by Fig. 9.

It should be noted that embodiment of the disclosure can be by hardware, software or software Combination with hardware is realized.Hardware components can be realized using special logic；Software section Can store in memory, by appropriate instruction execution system, such as microprocessor or special Performed with design hardware.It will be understood by those skilled in the art that above-mentioned equipment and side Method can be realized using computer executable instructions and/or be included in processor control routine, For example the such as mounting medium of disk, CD or DVD-ROM, such as read-only storage (Gu Part) programmable memory or the data medium of such as optics or electrical signal carrier above carry Such code is supplied.The equipment and its device of the disclosure can be by such as ultra-large integrated electricity The semiconductor of road OR gate array, logic chip, transistor etc. or such as scene can compile The hardware circuit realization of the programmable hardware device of journey gate array, programmable logic device etc., Can be realized with by the software of various types of computing devices, it is also possible to by above-mentioned hardware circuit Combination such as firmware with software is realized.

Although it should be noted that being referred to some units of device in above-detailed Or subelement, but this division is only not enforceable.In fact, according to the disclosure Embodiment, the feature and function of above-described two or more devices can be in one apparatus Embody.Conversely, the feature and function of an above-described device can be further divided into Embodied by multiple devices.

Additionally, although the operation of method of disclosure is described with particular order in the accompanying drawings, It is that this does not require that or implies must perform these operations according to the particular order, or Having to carry out the operation shown in whole could realize desired result.Conversely, describing in flow chart The step of can change execution sequence.Additionally or alternatively, it is convenient to omit some steps, will Multiple step stipulations are that step is performed, and/or a step is decomposed into multiple steps holds OK.

Although describing the disclosure by reference to some specific embodiments, it should be appreciated that, this It is open to be not limited to disclosed specific embodiment.The disclosure is intended to appended claims Included various modifications and equivalent arrangements in spirit and scope.Scope of the following claims is accorded with Broadest explanation is closed, so as to comprising all such modifications and equivalent structure and function.

Claims

1. it is a kind of in macro base station implement communication means, including：

Sent and the uplink to be transmitted of user equipment to the candidate's cell in multiple cells The relevant configuration information of road reference signal, wherein the configuration information is used by candidate's cell In the reception uplink reference signals to determine channel condition information, and the channel Status information indicates the channel matter of the channel between the user equipment and each candidate's cell Amount；

Received from least one of candidate's cell candidate's cell and meet predetermined condition Channel condition information；And

Based on the channel condition information for receiving, it is determined that for the data communication of the user equipment Virtual subdistrict, wherein the virtual subdistrict is by least one candidate cell Or multiple cells are formed.

2. method according to claim 1, further includes：

Sleep state will be in and with the distance of the user equipment within predetermined threshold Cell is defined as candidate's cell.

3. method according to claim 2, wherein true based on the channel condition information Surely the virtual subdistrict for being used for the data communication of the user equipment includes：

Based on the channel condition information, one is selected from least one candidate cell Or multiple cells；

If the user equipment is located in the range of established virtual subdistrict, it is determined that will be selected The cell selected is used to be merged into the established virtual subdistrict or for forming new void Intend cell；And

If the user equipment is not located in the range of the established virtual subdistrict, it is determined that Selected cell is used to form new virtual subdistrict.

4. method according to claim 3, further includes：

If it is determined that selected cell is used to form new virtual subdistrict, it is described from being formed A cell is selected in the cell of new virtual subdistrict as main cell, wherein the master Cell is responsible for the scheduling of the virtual subdistrict and in the new virtual subdistrict Other cells send schedule information to realize cooperation transmission.

5. method according to claim 2, further includes：

It is one to activate to the small cell transmission activate message for forming the virtual subdistrict Or it is multiple in dormant cell.

6. method according to claim 1, wherein the user equipment is located at having been formed Virtual subdistrict in the range of, methods described is further included：

Cell in the established virtual subdistrict is defined as candidate's cell.

7. method according to claim 6, wherein true based on the channel condition information Surely it is used for any that the virtual subdistrict of the data communication of the user equipment is included in the following ：

Based on the channel condition information, it is determined that the established virtual subdistrict is used for described The data communication of user equipment；Or

Based on the channel condition information, it is determined that by one in the established virtual subdistrict Or multiple cells are used to being formed in new virtual subdistrict, for use in the data of the user equipment Communication.

8. method according to claim 6, wherein the channel condition information is first Channel condition information, methods described is further included：

Second channel status information is received from master's cell of the established virtual subdistrict, its Described in second channel status information indicate cell in the established virtual subdistrict with The channel matter of the channel between the currently serviced user equipment in the established virtual subdistrict Amount, and

The data communication for the user equipment is wherein determined based on the channel condition information Virtual subdistrict include：

Based on first channel condition information and the second channel status information come really Surely it is used for the virtual subdistrict of the data communication of the user equipment.

9. method according to any one of claim 1 to 8, further includes：

By the information transfer relevant with the virtual subdistrict is to the user equipment and forms described Each of virtual subdistrict cell,

Described information wherein relevant with the virtual subdistrict include the following in one or It is multinomial：

The virtual subdistrict identifier ID of the virtual subdistrict, form the virtual subdistrict It is responsible for the small cell of master of scheduling in the physical district ID of each cell and the virtual subdistrict Relevant configuration information and the downlink with each cell for forming the virtual subdistrict The relevant configuration information of reference signal.

10. it is a kind of in the micro-base station of cell implement communication means, including：

Relevant with the uplink reference signals that user equipment to be transmitted matching somebody with somebody is received from macro base station Confidence ceases；

Based on the configuration information, the uplink reference signals are received from the user equipment To determine channel condition information, wherein the channel condition information indicate the user equipment with The channel quality of the channel between the cell；And

When the channel condition information meets predetermined condition, by the channel state information transmission To the macro base station, so that the macro base station is used to determine lead to for the data of the user equipment The virtual subdistrict of letter, wherein the virtual subdistrict is at least formed by the cell.

11. methods according to claim 10, wherein the slight area is in sleep State and the cell with the distance of the user equipment within predetermined threshold, and by institute Macro base station is stated to determine the cell is used to be merged into established virtual subdistrict or is incited somebody to action The cell is used to form new virtual subdistrict.

12. methods according to claim 11, further include：

Activate message is received from the macro base station；And

In response to the activate message, state of activation is switched to.

13. methods according to claim 10, wherein the slight area is included in The cell of established virtual subdistrict, and believed based on the channel status by the macro base station Breath determine by the established virtual subdistrict be used for the user equipment data communication or It is determined that at least the cell is set for forming new virtual subdistrict for use in the user Standby data communication.

14. methods according to claim 13, wherein the slight area is the shape Into virtual subdistrict in be responsible for master's cell of scheduling, and the channel condition information is first Channel condition information, methods described is further included：

Second channel status information is transmitted to the macro base station, wherein the second channel state is believed Breath indicates cell and the established virtual subdistrict in the established virtual subdistrict The channel quality of the channel between currently serviced user equipment.

15. methods according to claim 10, further include：

The information relevant with the virtual subdistrict is received from the macro base station,

16. method according to any one of claim 10 to 15, wherein described slight Area is defined as in the virtual subdistrict for the data communication of the user equipment by the macro base station Master's cell, methods described further includes：

To the user device transmissions downlink reference signal；And

Receiving the 3rd channel condition information from the user equipment is used for and the user equipment The data communication, wherein the 3rd channel condition information indicates the user equipment and formed The channel quality of the channel between each cell of the virtual subdistrict.

A kind of 17. communication means implemented in a user device, including：

To the small cell transmission uplink reference signals of candidate, so that candidate's cell is based on The configuration information relevant with the uplink reference signals that is received from macro base station is received The uplink reference signals are used to determine channel condition information, and in the channel status When information meets predetermined condition, the macro base station is given by the channel state information transmission, wherein The channel condition information indicates the channel between the user equipment and each candidate's cell Status information.

18. methods according to claim 17, wherein candidate's cell include with At least one in lower items：

In sleep state and small within predetermined threshold with the distance of the user equipment Cell；And

Cell in established virtual subdistrict, wherein the user equipment be located at it is described In the range of the virtual subdistrict of formation.

19. methods according to claim 17, further include：

20. method according to any one of claim 17 to 19, wherein the channel Status information is the first channel condition information, and methods described is further included：

Downlink reference signal is received from each cell for forming the virtual subdistrict；And

Based on the downlink reference signal for receiving, determine second channel status information for The data communication of the user equipment, wherein second status information indicates the user The channel quality of the channel between equipment and each cell for forming the virtual subdistrict；And

The second channel status information is transferred in the virtual subdistrict master for being responsible for scheduling Cell.

A kind of 21. communicators in macro base station, including：

Configuration information transmission unit, is configured as to the candidate's cell in the multiple cell The transmission configuration information relevant with the uplink reference signals that user equipment to be transmitted, wherein institute State configuration information by candidate's cell be used for receive the uplink reference signals so as to Determine channel condition information, and the channel condition information indicate the user equipment and each The channel quality of the channel between candidate's cell；

Status information receiving unit, is configured as being waited from least one of described candidate's cell Cell is selected to receive the channel condition information for meeting predetermined condition；And

Virtual subdistrict determining unit, is configured as based on the channel condition information for receiving, it is determined that For the virtual subdistrict of the data communication of the user equipment, wherein the virtual subdistrict is by described One or more cells at least one candidate's cell are formed.

22. devices according to claim 21, further include：

Candidate's cell determining unit, be configured as will in sleep state and with the user Cell of the distance of equipment within predetermined threshold is defined as the small cell of the candidate.

23. devices according to claim 22, wherein the virtual subdistrict determining unit Including：

Small cell selection unit, is configured as based on the channel condition information, from it is described at least One or more cells are selected in one candidate's cell；

First determining unit, is configured as being located at established virtual subdistrict in the user equipment In the range of when, it is determined that selected cell is used to being merged into described established virtual small Area or for forming new virtual subdistrict；And

Second determining unit, is configured as not being located at the established void in the user equipment Intend when in the range of cell, it is determined that selected cell is used to form new virtual subdistrict.

24. devices according to claim 23, further include：

The small cell selection unit of master, for it is determined that selected cell is used to form new During virtual subdistrict, one cell of selection is made from the cell of the new virtual subdistrict is formed Based on cell, wherein master's cell be responsible for the scheduling of the virtual subdistrict and for Other cells in the new virtual subdistrict send schedule information to realize cooperation transmission.

25. devices according to claim 22, further include：

Cell activates unit, is configured as swashing to the small cell transmission for forming the virtual subdistrict Message living is one or more of in dormant cell to activate.

26. devices according to claim 21, wherein the user equipment is located at shape Into virtual subdistrict in the range of, described device is further included：

Candidate's cell determining unit, being configured as will be small in the established virtual subdistrict Cell is defined as candidate's cell.

27. devices according to claim 26, wherein the virtual subdistrict determining unit Including any one of the following：

First determining unit, is configured as based on the channel condition information, it is determined that by described in The virtual subdistrict of formation is used for the data communication of the user equipment；Or

Second determining unit, is configured as based on the channel condition information, it is determined that by described in One or more cells in the virtual subdistrict of formation are used to being formed in new virtual subdistrict, so as to For the data communication of the user equipment.

28. devices according to claim 26, wherein the channel condition information is One channel condition information, and the status information receiving unit is configured to from described Master's cell of established virtual subdistrict receives second channel status information, wherein described second Channel condition information indicates the cell in the established virtual subdistrict to be formed with described The currently serviced user equipment in virtual subdistrict between channel channel quality, and

Wherein described virtual subdistrict determining unit is configured to based on first channel Status information and the second channel status information determine the data for the user equipment The virtual subdistrict of communication.

29. device according to any one of claim 21 to 28, further includes：

Virtual subdistrict information transmission unit, is configured as the information relevant with the virtual subdistrict Be transferred to the user equipment and form each cell of the virtual subdistrict, wherein with it is described The relevant described information in virtual subdistrict includes one or more in the following：It is described virtual small The virtual subdistrict identifier ID in area, the physics of each cell of the formation virtual subdistrict are small Area ID be responsible in the virtual subdistrict scheduling the relevant configuration information of master's cell, with And relevant with the downlink reference signal of each cell for forming the virtual subdistrict match somebody with somebody Confidence ceases.

A kind of 30. communicators in the micro-base station of cell, including：

Configuration information receiving unit, is configured as what is transmitted from macro base station reception and user equipment The relevant configuration information of uplink reference signals；

Status information determining unit, is configured as, based on the configuration information, being set from the user It is standby to receive the uplink reference signals to determine channel condition information, wherein the channel Status information indicates the channel quality of the channel between the user equipment and the cell；With And

Status information transmission unit, is configured as meeting predetermined condition in the channel condition information When, the macro base station is given by the channel state information transmission, so that the macro base station is used for really Surely it is used for the virtual subdistrict of the data communication of the user equipment, wherein the virtual subdistrict is at least Formed by the cell.

31. devices according to claim 30, wherein the slight area is in sleep State and the cell with the distance of the user equipment within predetermined threshold, and by institute Macro base station is stated to determine the cell is used to be merged into established virtual subdistrict or is incited somebody to action The cell is used to form new virtual subdistrict.

32. devices according to claim 31, further include：

Activate message receiving unit, is configured as receiving activate message from the macro base station；And

State of activation switch unit, is configured to respond to the activate message, is switched to activation State.

33. devices according to claim 30, wherein the slight area is included in The cell of established virtual subdistrict, and believed based on the channel status by the macro base station Breath determine by the established virtual subdistrict be used for the user equipment data communication or It is determined that at least the cell is set for forming new virtual subdistrict for use in the user Standby data communication.

34. devices according to claim 33, wherein the slight area is the shape Into virtual subdistrict in be responsible for master's cell of scheduling, and the channel condition information is first Channel condition information, and

Wherein described status information transmission unit is configured to be transmitted to the macro base station Second channel status information, wherein the second channel status information indicates the established void Intend the cell user equipment currently serviced with the established virtual subdistrict in cell Between channel channel quality.

35. devices according to claim 30, further include：

Virtual subdistrict information receiving unit, is configured as receiving virtual with described from the macro base station The relevant information of cell, wherein the described information relevant with the virtual subdistrict includes the following In one or more：The virtual subdistrict identifier ID of the virtual subdistrict, the formation void It is responsible for scheduling in the physical district ID of each cell of plan cell and the virtual subdistrict The relevant configuration information of main cell and with each cell for forming the virtual subdistrict The relevant configuration information of downlink reference signal.

36. device according to any one of claim 30 to 35, wherein described slight Area is defined as in the virtual subdistrict for the data communication of the user equipment by the macro base station Master's cell, described device further includes：

Downlink reference signal transmission unit, is configured as descending to the user device transmissions Link reference signal；And

User equipment status information receiving unit, is configured as receiving the 3rd from the user equipment Channel condition information is used for the data communication with the user equipment, wherein the 3rd letter Channel state information indicate the user equipment with formed the virtual subdistrict each cell it Between channel channel quality.

A kind of 37. communicators in a user device, including：

Uplink reference signals transmission unit, is configured as to the small cell transmission uplink of candidate Road reference signal, so that candidate's cell is up with described based on what is received from macro base station The relevant configuration information of link reference signal receives the uplink reference signals to true Determine channel condition information, and when the channel condition information meets predetermined condition, will be described Channel state information transmission gives the macro base station, wherein the channel condition information indicates the use The status information of the channel between family equipment and each candidate's cell.

38. device according to claim 37, wherein candidate's cell include with At least one in lower items：

39. device according to claim 37, further includes：

40. device according to any one of claim 37 to 39, wherein the channel Status information is the first channel condition information, and described device is further included：

Downlink reference signal receiving unit, is configured as from the every of the formation virtual subdistrict Individual cell receives downlink reference signal；And

User equipment status information determining unit, is configured as based on the downlink ginseng for receiving Signal is examined, determines that second channel status information is led to for the data of the user equipment Letter, wherein second status information indicates the user equipment and forms the virtual subdistrict The channel quality of the channel between each cell；And

User equipment status information transmission unit, is configured as the second channel status information It is transferred to master's cell of responsible scheduling in the virtual subdistrict.

A kind of 41. communication systems, including：

Macro base station, including the device according to any one of claim 21 to 29；

The micro-base station of at least one cell, the micro-base station of each cell includes will according to right Seek the device described in 30 to 36；And

User equipment, including the device according to any one of claim 37 to 40.