CN104105127A - Cell data transmission control method, data transmission method and device - Google Patents
Cell data transmission control method, data transmission method and device Download PDFInfo
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- CN104105127A CN104105127A CN201310116433.9A CN201310116433A CN104105127A CN 104105127 A CN104105127 A CN 104105127A CN 201310116433 A CN201310116433 A CN 201310116433A CN 104105127 A CN104105127 A CN 104105127A
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Abstract
The invention discloses a small cell data transmission control method, a data transmission method and a device in order to solve the problem that the switching between small cells frequently happening in UE causes great quantity of high level control signaling overheat. The method comprises: a macro base station determines a small cell cluster, wherein the small cell cluster comprises a plurality of small cells; the macro base station transmits wireless reconfiguration orders targeting a terminal to the determined small cell cluster in order to trigger a multi-point coordinated transmission mode performed among the plurality of small cell base stations comprised by the determined small cell cluster to perform data transmission targeting the terminal.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of data transfer control method, data transmission method and equipment of small-cell.
Background technology
At present, in R12, propose a kind of novel small-cell, be called FSCs or small Cell, as shown in Figure 1.Small-cell is not traditional community, and it by being no longer furnished with the exclusive signaling in community and channel, that is to say, does not have PSS/SSS, CRS, MIB/SIB etc.Due in small-cell, chain of command separates with user's face, for UE, small-cell can only be visible by the signaling of macrocell, and the channel between small-cell and UE is set up and is discharged and also depends on macrocell, therefore, for the UE under idle pulley, resident and the gravity treatment of community will all be carried out under macrocell, thereby small-cell is sightless for UE.
Usually, the small-cell in macrocell distributes often than comparatively dense.Due to the coverage little (covering radius is generally 20m～50m) of small-cell, therefore, under the scene of multiple small-cells dense distribution, the UE that high speed moves moves to another small-cell from a small-cell will be very frequent.If now adopt again traditional community switching controls mode, will between small-cell and macrocell, produce a large amount of high-rise control signal expenses, thereby can reduce network performance and user's experience.
Summary of the invention
The embodiment of the present invention provides a kind of data transfer control method, data transmission method and equipment of small-cell, in order to solve UE in prior art, the problem that switching between small-cell can cause producing a large amount of high-rise control signal expenses frequently occurs.
The embodiment of the present invention is by the following technical solutions:
A data transfer control method for small-cell, comprising: macro base station is determined small-cell bunch; Wherein: this small-cell bunch comprises the multiple small-cells in macro base station coverage; Macro base station is the wireless reconfiguration instructions for terminal to bunch transmission of definite small-cell, adopts multi-point cooperative transmission mode to trigger between the base station of bunch multiple small-cells that comprised, definite small-cell, carries out the transfer of data for described terminal; Wherein, in the coverage of at least one small-cell of described terminal in described multiple small-cells.
A data transmission method for small-cell, comprising: the base station of small-cell receives the wireless reconfiguration instructions for terminal that macro base station sends; The base station of small-cell adopts multi-point cooperative transmission mode, and between the base station of other small-cells in the small-cell at place, described small-cell bunch, carries out the transfer of data for described terminal; In the coverage of the small-cell that wherein, described terminal at least comprises in described small-cell bunch.
A data transmission method for small-cell, comprising: the base station of small-cell receives the wireless reconfiguration instructions for terminal of the base station transmission of other small-cells; According to described wireless reconfiguration instructions, foundation is connected with described terminal; And adopt multi-point cooperative transmission mode, and carry out the transfer of data for described terminal between the base station of other small-cells in the small-cell at place, small-cell bunch; In the coverage of the small-cell that wherein, described terminal at least comprises in described small-cell bunch.
A kind of macro base station, comprising: bunch determining unit, for determining small-cell bunch; Wherein: this small-cell bunch comprises the multiple small-cells in macro base station coverage; Instruction sending unit, for the wireless reconfiguration instructions for terminal to the definite small-cell bunch transmission of bunch determining unit, adopt multi-point cooperative transmission mode to trigger between the base station of bunch multiple small-cells that comprised, definite small-cell, carry out the transfer of data for described terminal; Wherein, in the coverage of at least one small-cell of described terminal in described multiple small-cells.
A kind of small-cell equipment, comprising: command reception unit, the wireless reconfiguration instructions for terminal sending for receiving macro base station; Data transmission unit, for receiving after described instruction in command reception unit, adopts multi-point cooperative transmission mode, and carries out the transfer of data for described terminal between the base station of other small-cells in the small-cell at equipment place, described small-cell bunch; In the coverage of the small-cell that wherein, described terminal at least comprises in described small-cell bunch.
A kind of small-cell equipment, comprising: command reception unit, the wireless reconfiguration instructions for terminal sending for receiving the base station of other small-cells; Connect and set up unit, for the described wireless reconfiguration instructions receiving according to command reception unit, foundation is connected with described terminal; Data transmission unit, for adopting multi-point cooperative transmission mode, and carries out the transfer of data for described terminal between the base station of other small-cells in the small-cell at this place, corresponding small-cell of small-cell equipment bunch; In the coverage of the small-cell that wherein, described terminal at least comprises in described small-cell bunch.
The beneficial effect of the embodiment of the present invention is as follows:
The embodiment of the present invention by macro base station to small-cell bunch transmission for the wireless reconfiguration instructions of described UE, trigger between the base station of Cu Zhong small-cell, small-cell and adopt multi-point cooperative transmission mode to carry out the transfer of data for UE, thereby be equivalent to the coverage of small-cell to expand as the coverage of small-cell under this small-cell bunch.Because UE is when movable in the coverage of this small-cell bunch, even if there is the switching between small-cell, the base station of the base station of former small-cell and target small-cell also can adopt multi-point cooperative transmission mode to complete the service to UE, therefore send high-rise control signal without macro base station, thereby compared with prior art, this programme can not produce a large amount of high-rise control signal expenses.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of novel small-cell of proposing in R12;
The idiographic flow schematic diagram of the data transfer control method of a kind of small-cell that Fig. 2 provides for the embodiment of the present invention;
The idiographic flow schematic diagram of the data transmission method of a kind of small-cell that Fig. 3 provides for the embodiment of the present invention;
The idiographic flow schematic diagram of the data transmission method of the another kind of small-cell that Fig. 4 provides for the embodiment of the present invention;
Fig. 5 is the small-cell bunch schematic diagram for realizing embodiment 1 and embodiment 2;
Fig. 6 is the implementation process schematic diagram of embodiment 1;
Fig. 7 is the implementation process schematic diagram of embodiment 2;
Fig. 8 is the implementation process schematic diagram of embodiment 3.
Embodiment
In existing network, small-cell will dense distribution in macro base station, the support of corresponding small-cell centering high-speed mobile UE will be a main design difficulty.Because the coverage of small-cell is little, therefore under the scene of small-cell dense distribution, the UE that high speed moves moves to another small-cell from a small-cell will be very frequent, now adopt traditional mobile switching controls scheme will produce a large amount of high-rise control signal expenses, thereby reduce network performance and user's experience.Therefore design new mobile scheme to support the movement of high speed user in the small-cell of dense distribution, avoiding producing a large amount of high-rise control signal expenses is embodiment of the present invention problem to be solved.
In order to solve UE in prior art, the problem that switching between small-cell can cause producing a large amount of high-rise control signal expenses frequently occurs, the embodiment of the present invention provides a kind of data transfer control method, data transmission method and corresponding equipment of small-cell.By the coverage of small-cell being expanded as to the coverage of small-cell under this small-cell bunch, thereby while making UE movable in the coverage of small-cell bunch, even if there is the switching between small-cell, the base station of the base station of former small-cell and target small-cell also can adopt multi-point cooperative transmission mode to complete the service to UE, therefore send high-rise control signal without macro base station, thereby compared with prior art, this programme can not produce a large amount of high-rise control signal expenses.
Below in conjunction with Figure of description, embodiments of the invention are described, should be appreciated that embodiment described herein, only for description and interpretation the present invention, is not limited to the present invention.And in the situation that not conflicting, the feature in embodiment and embodiment in this explanation can be interosculated.
First, the embodiment of the present invention provides a kind of data transfer control method of small-cell, and the idiographic flow schematic diagram of the method as shown in Figure 2, mainly comprises the steps:
Step 21, macro base station is determined small-cell bunch; Wherein: this small-cell bunch comprises the multiple small-cells in macro base station coverage;
Step 22, macro base station is the wireless reconfiguration instructions for UE to bunch transmission of definite small-cell, adopts multi-point cooperative transmission mode to trigger between the base station of bunch multiple small-cells that comprised, definite small-cell, carries out the transfer of data for UE.In the coverage of at least one small-cell in multiple small-cells that wherein, UE comprises in small-cell bunch.In the embodiment of the present invention, the base station of described small-cell refers to the base station of small-cell self, as Home eNodeB, femtocell base station (Femto NodeB) or base station, Microcell (Pico Cell) etc., and not refer to the macro base station of macrocell that covers small-cell.
For above-mentioned steps 21, the macro base station in the embodiment of the present invention can be, but not limited to adopt and comes in two ways to determine small-cell bunch.Below introduce respectively this two mode:
First kind of way determines the mode of small-cell bunch according to static information.Adopt which, macro base station can, from multiple small-cells of setting in advance bunch, be determined small-cell bunch.Wherein, the setting up procedure of small-cell bunch can comprise the steps:
Step 1: macro base station is determined all small-cells that are subordinated to self;
Step 2: based on all those small-cells, according to the cluster mode that the small-cell that possesses identical specific characteristic is divided into same small-cell bunch, obtain multiple small-cells bunch.
Wherein, here said specific characteristic can be UE at the appointed time length inscribe change to small-cell and leave total degree of small-cell etc.
The second way is dynamically to determine the mode of small-cell bunch.Adopt which, the measurement report that macro base station can report according to UE, chooses multiple small-cells as small-cell bunch the small-cell in macro base station coverage.
Such as, macro base station is according to the measurement report reporting according to UE, select to cover multiple small-cells that certain region and the signal strength signal intensity in this region relatively approach as small-cell bunch simultaneously.
For above-mentioned first kind of way, for the base station that makes Cu Zhong small-cell, small-cell can complete multi-point cooperative transmission, macro base station can be first chosen respectively small-cell as small-cell, center from each small-cell of arranging bunch, and the mark of small-cell, definite center; Then, then for the each small-cell arranging carry out bunch respectively: the base station to the each small-cell comprising in this small-cell bunch sends multi-point cooperative transmission configuration information.Wherein, this multi-point cooperative transmission configuration information comprises: the mark of each small-cell that this small-cell bunch comprises, and the information of bunch head of this small-cell bunch; The information of this bunch of head comprises: the mark of small-cell, Cu Zhong center, this small-cell.
In addition, this flow process as shown in Figure 1 can further include following steps:
First, the small-cell measurement report that macro base station sends according to UE, judges whether UE needs to carry out the switching between small-cell;
Then, in judged result, when being, further judgement is currently serviced in the small-cell of UE and whether small-cell that UE will be switched to belongs to same small-cell bunch.
Based on above-mentioned two steps, the specific implementation process of above-mentioned steps 11 can be: macro base station, judging when being currently serviced in the small-cell of UE and small-cell that UE will be switched to and belonging to same small-cell bunch, is determined small-cell bunch.
The said method that the embodiment of the present invention provides by macro base station to small-cell bunch transmission for the wireless reconfiguration instructions of UE, trigger between the base station of Cu Zhong small-cell, small-cell and adopt multi-point cooperative transmission mode to carry out the transfer of data for UE, thereby be equivalent to the coverage of small-cell to expand as the coverage of small-cell under this small-cell bunch.Because UE is when movable in the coverage of this small-cell bunch, even if there is the switching between small-cell, the base station of the base station of former small-cell and target small-cell also can adopt multi-point cooperative transmission mode to complete the service to UE, therefore send high-rise control signal without macro base station, thereby compared with prior art, this programme can not produce a large amount of high-rise control signal expenses.
For the inventive concept identical with said method, the embodiment of the present invention also provides a kind of data transmission method of small-cell as shown in Figure 3, and the method mainly comprises the steps:
Step 31, the base station of small-cell receives the wireless reconfiguration instructions for UE that macro base station sends;
Step 32, the base station of small-cell adopts multi-point cooperative transmission mode, and carries out the transfer of data for UE between the base station of other small-cells in the small-cell at place, small-cell bunch.In the coverage of the small-cell that wherein, UE at least comprises in described small-cell bunch.The mark of other small-cells that comprise in the cooperative transmission configuration information that the base station of this small-cell can send in advance according to macro base station is determined the base station of other small-cells, determine should and the base station of which small-cell between adopt multi-point cooperative transmission mode to transmit data.
Optionally, in the time that this small-cell is selected as Centroid in small-cell bunch, the base station of this small-cell can also be carried out: the wireless reconfiguration information comprising in wireless reconfiguration instructions is sent to the base station of other small-cells, to indicate the base station foundation of other small-cells and being connected of UE.Thereby what the base station of the each small-cell based in above-mentioned small-cell bunch and UE set up is connected, and the base station of each small-cell just can adopt multi-point cooperative transmission mode, the transmission of the data of realization to UE.
For the inventive concept identical with method as shown in Figure 1, the embodiment of the present invention also provides a kind of data transmission method of small-cell as shown in Figure 4, and the method mainly comprises the steps:
Step 41, the base station of small-cell receives the wireless reconfiguration instructions for UE of the base station transmission of other small-cells;
Step 42, the base station of this small-cell is according to wireless reconfiguration instructions, and foundation is connected with UE's;
Step 43, the base station of this small-cell adopts multi-point cooperative transmission mode, and carries out the transfer of data for UE between the base station of other small-cells in the small-cell at this place, small-cell bunch.In the coverage of the small-cell that wherein, UE at least comprises in small-cell bunch.
Below taking two concrete execution modes as example, describe scheme that the embodiment of the present invention provides application flow in practice in detail.
The coverage that these two embodiments have all provided the multiple small Cell of a kind of use associating (or be called L1/L2 move) replaces the coverage of traditional small-cell and the method for mobile management.An overlay area that defines a small-cell being made up of multiple small-cells bunch replaces multiple overlay areas of multiple small-cells, and defines a small-cell as Centroid (small-cell, Ye Cheng center) i.e. bunch head, as shown in Figure 5 in small-cell bunch.Further, by use collaborative multiple spot (CoMP in tuftlet, Coordinated Multiple Points) transmission or other multipoint cooperative technology realize the transmission of user data, to avoid frequently switching between the different small-cells of dense distribution, thereby reduce the transmission of high-rise control signal, also reduced the signaling load of core net.
Embodiment 1
Based on inventive concept as shown in Figure 5, the implementation process of embodiment 1 mainly can comprise following step as shown in Figure 6:
Step 61, macro base station obtains the list being made up of the mark of small-cell that is subordinated to self.
Wherein, to can be, but not limited to be the cell physical address (PCI, Physical Cell-ID) of small-cell to the mark of small-cell.
Step 62, macro base station carries out cluster to the mark of the small-cell comprising in the list of obtaining, and the corresponding small-cell of mark of small-cell that meets identical specified requirements is divided in same small-cell bunch, thereby obtains multiple small-cells bunch.Further, macro base station is chosen respectively the Centroid of a small-cell as corresponding small-cell bunch from each small-cell bunch.
In the embodiment of the present invention, macro base station can be adopted as the mark binding same cluster mark of Cu Zhong small-cell, same small-cell and bunch mutually different mode of mark that different small-cell bunch adopts, can belong to same small-cell bunch according to this bunch of which small-cell of mark identification simply so that follow-up.
In actual applications, macro base station can be realized the division to small-cell bunch neatly.Such as, macro base station can be according to the distribution situation of the represented small-cell of the mark of the small-cell comprising in list and some historical informations etc., determine which small-cell should be divided in same small-cell bunch.Specifically, if macro base station is according to the distribution situation of small-cell (as the GPS locating information of small-cell), the distribution of determining certain several small-cell is more concentrated, so just can be further judge according to historical information whether UE occurs the frequent phenomenon of switching in the distributed areas of this this several small-cells, if be judged as YES, these small-cells can be divided in a small-cell bunch.Because definite mode of this small-cell bunch is to carry out based on some set information (as the GPS locating information of small-cell), therefore this kind of definite mode also can be regarded as according to static information and determine small-cell bunch.
Or macro base station also can dynamically be realized cluster is carried out in small-cell according to the measurement report of UE, this mode can be called the mode of dynamically determining small-cell bunch.Such as the measurement report that can dynamically report according to UE, determine UE in certain region signal strength signal intensity in the measured different small-cells of synchronization, and multiple small-cells that signal strength signal intensity is relatively approached are divided in same small-cell bunch.Macro base station can carry out after statistical analysis at the numerous measurement reports to UE, then carries out the division of small-cell bunch, thereby makes division result more objective and accurate.Due under the dense distribution scene of small-cell, small-cell coverage generally only has 20m to 50m, thereby the macro base station mode that solely measurement report based on UE is divided small-cell bunch will be carried out based on the very large measurement report of data volume, and therefore computing cost relatively can be higher.In addition,, because the signal strength signal intensity of small-cell may be subject to the impact of various environmental factors, therefore which often needs macro base station regularly to change the formation of small-cell bunch according to the measurement report of UE, thereby may need more processing resource from realizing.
Visible, comparatively speaking, determine that according to static information the demand that the mode of small-cell bunch processes resource for macro base station is just smaller.
Step 63a and step 63b, each small-cell bunch that macro base station obtains for division, carries out respectively: relevant configuration is carried out in the base station to other small-cells except Centroid in Centroid in small-cell bunch and small-cell bunch.
Wherein, macro base station can be by realizing the configuration of the base station to the each small-cell in small-cell bunch in the mode of X2 interface command transmitting.Wherein, this signaling of transmission is called multi-point cooperative transmission configuration information.For arbitrarily small cell cluster, macro base station can comprise to this multi-point cooperative transmission configuration information of its transmission: the mark of each small-cell that this small-cell bunch comprises, and the information of bunch head of this small-cell bunch.Wherein, the information of this bunch of head comprises the mark of the Centroid in this small-cell bunch.
Step 64, macro base station receives the measurement report that UE sends.
In embodiment 1, the measurement report that UE sends can be the discovery signals (DS that the base station of small-cell is sent, Discovery Signal) be measured, also can be that the downlink reference signal (RS, Reference Signal) that the base station of small-cell is sent is measured.
Step 65, macro base station, according to measurement report, is appointed as the small-cell bunch of UE service.
Step 66, macro base station is configured the Centroid in the small-cell bunch of specifying so that itself and UE connects and provide service for UE.
In this step, macro base station can send to Centroid by the wireless reconfiguration instructions for UE, thereby realize the configuration to Centroid, and utilize Centroid to pass through backhaul, the base station of other small-cells that will participate in transfer of data in the small-cell of choosing bunch is configured accordingly.This can require Centroid and will participate in communication between the base station of small-cell of transfer of data based on desirable return link (ideal backhaul).The configuration of the base station by the Cu Neige small-cell, small-cell to choosing, some information of UE, for example UE sets up based on radio resource control (RRC with macro base station in the process of the business of initiation, Radio Resource Control): connection after the wireless reconfiguration information that obtains (comprise private radio carrying (DRB, Dedicated Radio Bearer) information etc.) can issue the base station of each small-cell in this bunch, to set up the base station of each small-cell and the connection of UE that participate in transmission in this bunch.
Step 67, the base station of the small-cell in the selected tuftlet of macro base station based on collaborative multiple spot (CoMP, Coordinated Multiple Points) transmission or other multipoint cooperative technology, the data of UE are transmitted.
Wherein, CoMP transmission refers to that collaborative participation of the multiple transfer points that separate on geographical position is that the data (PDSCH) of a UE are transmitted or combined and receive the data (PUSCH) that a UE sends.The multiple transfer points that participate in cooperation are often referred to the base station of (comprising small-cell), different districts.Based on CoMP technology, can realize edge customer is placed on the same frequency of several base stations, several base stations are simultaneously for this user's service, to improve the covering performance of edge customer.
In embodiment 1, macro base station can also be from this small-cell of choosing bunch, only the small-cell of the transmission of selected part participation data participates in the transmission of the follow-up data to UE, and the mark of this part small-cell is notified to Centroid, thereby the follow-up data of only being carried out cooperative transmission UE by Centroid and this part small-cell.
Embodiment 2
Based on inventive concept as shown in Figure 5, the implementation process of embodiment 2 mainly can comprise following step as shown in Figure 7:
Step 71, macro base station receives the measurement report that UE sends.
Step 72, macro base station, according to the historical measurement report sending of the measurement report of the current transmission of UE and UE, is divided the small-cell in macro base station coverage, and chooses a small-cell bunch for service UE from divide the small-cell that obtains bunch.Usually, in this small-cell that macro base station is chosen bunch, can comprise the small-cell that UE will be switched to, therefore, macro base station can be chosen this small-cell as the Centroid in the small-cell of choosing bunch.
Step 73, macro base station sends cooperative transmission configuration information to the Centroid in the small-cell of choosing bunch, to make this Centroid this cooperative transmission configuration information be sent to the base station of other small-cells in this small-cell bunch.
Step 74, macro base station sends wireless reconfiguration instructions to above-mentioned Centroid, sets up being connected between itself and UE, and trigger Cu Zhong small-cell, small-cell according to multipoint cooperative technology to trigger Centroid, and the data of UE are transmitted.
Embodiment 3
Based on inventive concept as shown in Figure 5, the implementation process of embodiment 3 mainly can comprise following step as shown in Figure 8:
Step 81, macro base station receives the measurement report that UE sends.
Step 82, the measurement report that macro base station sends according to UE, judges whether UE needs to carry out the switching between small-cell.In judged result when being, execution step 83, otherwise can end process flow process.
In embodiment 3, the measurement report that UE sends can be that the discovery signals (DS, Discovery Signal) that the base station of small-cell is sent is measured, and can be also that the descending RS that the base station of small-cell is sent is measured.
Step 83, macro base station further judgement is currently serviced in the small-cell (former small-cell) of UE and whether small-cell (target small-cell) that UE will be switched to belongs to same small-cell bunch.If judged result is no, performs step 84, otherwise can not carry out any operation.
Such as, macro base station can, by the whether consistent mode of bunch mark that judges that the mark of these two small-cells is bound respectively, judge whether these two small-cells belong to same small-cell bunch.
Step 84, macro base station, from multiple small-cells of obtaining in advance bunch, is chosen the small-cell bunch under the small-cell that UE will be switched to.
Step 85, macro base station is configured the Centroid in the small-cell of choosing bunch so that itself and UE connects and provide service for UE.
Step 86, the base station of the small-cell in the selected tuftlet of macro base station based on multipoint cooperative technology, the data of UE are transmitted.
In order to solve UE in prior art, the problem that switching between small-cell can cause producing a large amount of high-rise control signal expenses frequently occurs, the embodiment of the present invention also provides a kind of macro base station, and this equipment mainly comprises following function unit:
Bunch determining unit, for determining small-cell bunch; Wherein: this small-cell bunch comprises the multiple small-cells in macro base station coverage;
Instruction sending unit, for the wireless reconfiguration instructions for UE to the definite small-cell bunch transmission of bunch determining unit, adopt multi-point cooperative transmission mode to trigger between the base station of bunch multiple small-cells that comprised, definite small-cell, carry out the transfer of data for UE.Wherein, in the coverage of at least one small-cell of UE in described multiple small-cells.
Optionally, bunch determining unit specifically can be for: the measurement report reporting according to UE, the small-cell in macro base station coverage, choose multiple small-cells as described small-cell bunch.Or it can be for: from multiple small-cells of setting in advance bunch, choose small-cell bunch.
Optionally, in the time that needs set in advance small-cell bunch, this equipment can further include the small-cell determining unit and bunch division unit that multiple small-cells bunch are set for jointly completing, wherein:
Small-cell determining unit, for determining all small-cells that are subordinated to this macro base station;
Bunch division unit, for described all small-cells of determining based on small-cell determining unit, according to the cluster mode that the small-cell that possesses identical specific characteristic is divided into same small-cell bunch, obtains multiple small-cells bunch.
Optionally, this equipment can further include:
Unit is chosen in small-cell, center, before sending wireless reconfiguration instructions at instruction sending unit, from each small-cell of setting in advance bunch, chooses respectively small-cell as small-cell, center;
Mark determining unit, for determining that respectively center small-cell chooses the mark of small-cell, unit selection Ge center;
Configuration information transmitting element, carries out respectively for the each small-cell bunch setting in advance: the base station of the each small-cell comprising to this small-cell bunch sends multi-point cooperative transmission configuration information; Wherein, this multi-point cooperative transmission configuration information comprises: the mark of each small-cell that this small-cell bunch comprises, and the information of bunch head of this small-cell bunch; The information of this bunch of head comprises: the mark of small-cell, Cu Zhong center, this small-cell.
Optionally, this equipment can also comprise:
Measurement report receiving element, the small-cell measurement report sending for receiving UE;
The first judging unit, for the small-cell measurement report receiving according to measurement report receiving element, judges whether described UE needs to carry out the switching between small-cell;
The second judging unit, for the judged result that obtains at the first judging unit, when being, judgement is currently serviced in the small-cell of UE and whether small-cell that UE will be switched to belongs to same small-cell bunch.
Based on the function of said units, bunch determining unit specifically can be for: judge when being currently serviced in the small-cell of UE and small-cell that UE will be switched to and belonging to same small-cell bunch at the second judging unit, determine small-cell bunch.
For the inventive concept identical with the said equipment, the embodiment of the present invention also provides two kinds of small-cell equipment.Wherein, the first small-cell equipment mainly comprises following function unit:
Command reception unit, the wireless reconfiguration instructions for UE sending for receiving macro base station;
Data transmission unit, for receiving after described instruction in command reception unit, adopts multi-point cooperative transmission mode, and carries out the transfer of data for UE between the base station of other small-cells in the small-cell at this equipment place, small-cell bunch.In the coverage of at least one small-cell that wherein, UE comprises in small-cell bunch.
Optionally, the base station of above-mentioned other small-cells is marks of other small-cells of comprising in the cooperative transmission configuration information sending in advance according to macro base station and definite.
Optionally, this small-cell equipment can also comprise: configuration information transmitting element, for before data transmission unit transmission data, the wireless reconfiguration information comprising in the instruction that command reception unit is received sends to the base station of other small-cells, to indicate the base station foundation of other small-cells and being connected of described UE.
The second small-cell equipment mainly comprises following function unit:
Command reception unit, the wireless reconfiguration instructions for UE sending for receiving the base station of other small-cells;
Connect and set up unit, set up and being connected of UE for the wireless reconfiguration instructions receiving according to command reception unit;
Data transmission unit, for adopting multi-point cooperative transmission mode, and carries out the transfer of data for described UE between the base station of other small-cells in the small-cell at this place, corresponding small-cell of small-cell equipment bunch.In the coverage of at least one small-cell that wherein, UE comprises in small-cell bunch.
Optionally, the base station of other small-cells in small-cell bunch can be the mark of other small-cells of comprising in the cooperative transmission configuration information sending in advance according to macro base station and definite.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (22)
1. a data transfer control method for small-cell, is characterized in that, comprising:
Macro base station is determined small-cell bunch; Wherein: this small-cell bunch comprises the multiple small-cells in macro base station coverage;
Macro base station is the wireless reconfiguration instructions for terminal to bunch transmission of definite small-cell, adopts multi-point cooperative transmission mode to trigger between the base station of bunch multiple small-cells that comprised, definite small-cell, carries out the transfer of data for described terminal;
Wherein, in the coverage of at least one small-cell of described terminal in described multiple small-cells.
2. the method for claim 1, is characterized in that, macro base station is determined small-cell bunch, specifically comprises:
Macro base station, according to the measurement report of terminal to report, is chosen multiple small-cells as described small-cell bunch the small-cell in macro base station coverage.
3. the method for claim 1, is characterized in that, macro base station is determined small-cell bunch, specifically comprises:
Macro base station, from multiple small-cells of setting in advance bunch, is chosen small-cell bunch.
4. method as claimed in claim 3, is characterized in that, by following manner, described multiple small-cell bunch is set:
Macro base station is determined all small-cells that are subordinated to this macro base station; And
Based on described all small-cells, according to the cluster mode that the small-cell that possesses identical specific characteristic is divided into same small-cell bunch, obtain multiple small-cells bunch.
5. method as claimed in claim 3, is characterized in that, macro base station is to bunch transmission of definite small-cell before the wireless reconfiguration instructions for terminal, and described method also comprises:
Macro base station is chosen respectively small-cell as small-cell, center from each small-cell of setting in advance bunch, and the mark of small-cell, definite center;
Carry out bunch respectively for the each small-cell setting in advance: the base station to the each small-cell comprising in this small-cell bunch sends multi-point cooperative transmission configuration information; Wherein, this multi-point cooperative transmission configuration information comprises: the mark of each small-cell that this small-cell bunch comprises, and the information of bunch head of this small-cell bunch; The information of this bunch of head comprises: the mark of small-cell, Cu Zhong center, this small-cell.
6. the method for claim 1, is characterized in that, described method also comprises:
The small-cell measurement report that macro base station sends according to described terminal, judges whether described terminal needs to carry out the switching between small-cell;
In judged result, when being, judgement is currently serviced in the small-cell of terminal and whether small-cell that terminal will be switched to belongs to same small-cell bunch; ?
Macro base station is determined small-cell bunch, specifically comprises:
Macro base station, judging when being currently serviced in the small-cell of terminal and small-cell that terminal will be switched to and belonging to same small-cell bunch, is determined small-cell bunch.
7. a data transmission method for small-cell, is characterized in that, comprising:
The base station of small-cell receives the wireless reconfiguration instructions for terminal that macro base station sends;
The base station of small-cell adopts multi-point cooperative transmission mode, and between the base station of other small-cells in the small-cell at place, described small-cell bunch, carries out the transfer of data for described terminal;
In the coverage of the small-cell that wherein, described terminal at least comprises in described small-cell bunch.
8. method as claimed in claim 7, is characterized in that, the base station of described other small-cells is marks of other small-cells of comprising in the cooperative transmission configuration information sending in advance according to macro base station and definite.
9. method as claimed in claim 8, it is characterized in that, the base station of small-cell adopts multi-point cooperative transmission mode, and before carrying out the transfer of data for described terminal between the base station of other small-cells in the small-cell at place, described small-cell bunch, described method also comprises:
The base station of small-cell sends to the wireless reconfiguration information comprising in described wireless reconfiguration instructions the base station of described other small-cells, to indicate the base station foundation of described other small-cells and being connected of described terminal.
10. a data transmission method for small-cell, is characterized in that, comprising:
The base station of small-cell receives the wireless reconfiguration instructions for terminal of the base station transmission of other small-cells;
According to described wireless reconfiguration instructions, foundation is connected with described terminal; And
Adopt multi-point cooperative transmission mode, and carry out the transfer of data for described terminal between the base station of other small-cells in the small-cell at place, described small-cell bunch;
In the coverage of the small-cell that wherein, described terminal at least comprises in described small-cell bunch.
11. methods as claimed in claim 10, is characterized in that, the base station of other small-cells in described small-cell bunch is marks of other small-cells of comprising in the cooperative transmission configuration information sending in advance according to macro base station and definite.
12. 1 kinds of macro base stations, is characterized in that, comprising:
Bunch determining unit, for determining small-cell bunch; Wherein: this small-cell bunch comprises the multiple small-cells in macro base station coverage;
Instruction sending unit, for the wireless reconfiguration instructions for terminal to the definite small-cell bunch transmission of bunch determining unit, adopt multi-point cooperative transmission mode to trigger between the base station of bunch multiple small-cells that comprised, definite small-cell, carry out the transfer of data for described terminal;
Wherein, in the coverage of at least one small-cell of described terminal in described multiple small-cells.
13. macro base stations as claimed in claim 12, is characterized in that, bunch determining unit specifically for: according to the measurement report of terminal to report, the small-cell in macro base station coverage, choose multiple small-cells as described small-cell bunch.
14. macro base stations as claimed in claim 12, is characterized in that, bunch determining unit specifically for: from multiple small-cells of setting in advance bunch, choose small-cell bunch.
15. macro base stations as claimed in claim 14, is characterized in that, described equipment also comprises the small-cell determining unit and bunch division unit that described multiple small-cell bunch are set for jointly completing, wherein:
Small-cell determining unit, for determining all small-cells that are subordinated to this macro base station;
Bunch division unit, for described all small-cells of determining based on small-cell determining unit, according to the cluster mode that the small-cell that possesses identical specific characteristic is divided into same small-cell bunch, obtains multiple small-cells bunch.
16. macro base stations as claimed in claim 14, is characterized in that, described equipment also comprises:
Unit is chosen in small-cell, center, for sending before described wireless reconfiguration instructions at instruction sending unit, from each small-cell of setting in advance bunch, chooses respectively small-cell as small-cell, center;
Mark determining unit, for determining that respectively center small-cell chooses the mark of small-cell, unit selection Ge center;
Configuration information transmitting element, carries out respectively for the each small-cell bunch setting in advance: the base station of the each small-cell comprising to this small-cell bunch sends multi-point cooperative transmission configuration information; Wherein, this multi-point cooperative transmission configuration information comprises: the mark of each small-cell that this small-cell bunch comprises, and the information of bunch head of this small-cell bunch; The information of this bunch of head comprises: the mark of small-cell, Cu Zhong center, this small-cell.
17. macro base stations as claimed in claim 12, is characterized in that, described equipment also comprises:
Measurement report receiving element, the small-cell measurement report sending for receiving terminal;
The first judging unit, for the small-cell measurement report receiving according to measurement report receiving element, judges whether described terminal needs to carry out the switching between small-cell;
The second judging unit, for the judged result that obtains at the first judging unit, when being, judgement is currently serviced in the small-cell of terminal and whether small-cell that terminal will be switched to belongs to same small-cell bunch; ?
Described bunch of determining unit specifically for: judge when being currently serviced in the small-cell of terminal and small-cell that terminal will be switched to and belonging to same small-cell bunch at the second judging unit, determine small-cell bunch.
18. 1 kinds of small-cell equipment, is characterized in that, comprising:
Command reception unit, the wireless reconfiguration instructions for terminal sending for receiving macro base station;
Data transmission unit, for receiving after described instruction in command reception unit, adopts multi-point cooperative transmission mode, and carries out the transfer of data for described terminal between the base station of other small-cells in the small-cell at equipment place, described small-cell bunch;
In the coverage of the small-cell that wherein, described terminal at least comprises in described small-cell bunch.
19. equipment as claimed in claim 18, is characterized in that, the base station of described other small-cells is marks of other small-cells of comprising in the cooperative transmission configuration information sending in advance according to macro base station and definite.
20. equipment as claimed in claim 19, is characterized in that, described equipment also comprises:
Configuration information transmitting element, for before data transmission unit transmits described data, the wireless reconfiguration information comprising in the described instruction that command reception unit is received sends to the base station of described other small-cells, to indicate the base station foundation of described other small-cells and being connected of described terminal.
21. 1 kinds of small-cell equipment, is characterized in that, comprising:
Command reception unit, the wireless reconfiguration instructions for terminal sending for receiving the base station of other small-cells;
Connect and set up unit, for the described wireless reconfiguration instructions receiving according to command reception unit, foundation is connected with described terminal;
Data transmission unit, for adopting multi-point cooperative transmission mode, and between the base station of other small-cells in the small-cell at place, small-cell corresponding to described small-cell equipment bunch, carries out the transfer of data for described terminal;
In the coverage of the small-cell that wherein, described terminal at least comprises in described small-cell bunch.
22. equipment as claimed in claim 21, is characterized in that, the base station of other small-cells in described small-cell bunch is marks of other small-cells of comprising in the cooperative transmission configuration information sending in advance according to macro base station and definite.
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