CN107404763A - Down control channel space division multiple access method, device and the base station of super cell - Google Patents

Down control channel space division multiple access method, device and the base station of super cell Download PDF

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Publication number
CN107404763A
CN107404763A CN201610341528.4A CN201610341528A CN107404763A CN 107404763 A CN107404763 A CN 107404763A CN 201610341528 A CN201610341528 A CN 201610341528A CN 107404763 A CN107404763 A CN 107404763A
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scheduling
space division
cell
master
division multiple
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CN107404763B (en
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秦洪峰
韩亚洁
陈琼
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses down control channel space division multiple access method, device and the base station of a kind of super cell.This method includes：Obtain the cell activation collection of each UE in super cell；A space division multiple access access master scheduling UE is selected from unscheduled UE according to default rule and at least one from scheduling UE；The control channel element CCE original positions shared by Downlink Control Information DCI that master scheduling UE is calculated according to master scheduling UE information, and calculate the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C RNTI values from scheduling UE matched with master scheduling UE；Match somebody with somebody the C RNTI from scheduling UE again by radio resource control RRC so that complete space division multiplexing from scheduling UE and master scheduling UE；By master scheduling UE with from scheduling UE DCI resources by time division multiplexed mapping on identical running time-frequency resource.The present invention can improve running time-frequency resource utilization rate, lift down control channel capacity, so as to lifting system capacity.

Description

Down control channel space division multiple access method, device and the base station of super cell
Technical field
The present invention relates to mobile communication technology field, be related specifically to LTE (Long Term Evolutio, for a long time Evolution) a kind of SDMA of super cell (Spatial Division Multiple Access, control channel in system Space division multiple access accesses) method, apparatus and base station.
Background technology
LTE system is the evolution of 3G (the third generation, the third generation) GSM, its with OFDM (Orthogonal Frequency Division Multiplexing, OFDM) and MIMO Based on core technologies such as (Multiple-Input Multiple Output, multiple-input and multiple-outputs), provide the user with Higher data transmission rate, lower propagation delay time and more excellent service quality.Therefore, LTE system is being just It is being widely studied and is progressively being applied to commercial network.
As shown in figure 1, super cell (Supper-Cell) is by multiple adjacent CP (Cell-Portion, routines Cell) composition, each CP shares the resource of super cell, including (Cell-ID, cell ID), time domain provide Source, frequency domain resource etc..In a super cell, each CP has unique mark.Obviously, it is right For each UE, its received signal power enhances, and adjacent area interference reduces, and thus can substantially carry The SINR (Signal to Interference Plus Noise Ratio, Signal to Interference plus Noise Ratio) of high user, particularly edge are used The SINR at family, so as to reach the purpose of the demodulation performance of lifting user's control channel and Traffic Channel.
However, because each super cell needs to cover original multiple CP scope, aggregate resource is relative to be subtracted Few, particularly when the number of users in a super cell is more, control channel capacity is limited and easily becomes Into bottleneck.Therefore, LTE protocol introduces EPDCCH (Enhanced Physical Downlink for this The physical downlink control channel of Control Channel enhancings) dispatch more users, still EPDCCH realizes complicated and occupancy PDSCH (Physical Downlink Share Channel, physical down Shared channel) resource, also result in power system capacity decline.Therefore correlation technique does not solve to use in super cell When amount is more, the problem of control channel capacity is limited.
The content of the invention
To be connect in consideration of it, it is an object of the invention to provide a kind of down control channel space division multiple access of super cell Enter method, apparatus and base station, with solve the number of users in super cell it is more when, control channel capacity is limited Technical problem.
Technical scheme is as follows used by the present invention solves above-mentioned technical problem：
According to an aspect of the present invention, there is provided the down control channel space division multiple access of super cell a kind of connect Enter method to comprise the following steps：
Obtain the cell activation collection of each UE in super cell；
A space division multiple access access master scheduling UE and at least one is selected from unscheduled UE according to default rule Individual space division multiple access is accessed from scheduling UE；
Master scheduling UE DCI (Downlink Control are calculated according to master scheduling UE information Information, Downlink Control Information) shared by control CCE (Control Channel Element, control letter Road element) original position, and calculate the C-RNTI (Cell-Radio from scheduling UE matched with master scheduling UE Network Temporary Identifier, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI) value；
Matched somebody with somebody again by RRC (Radio Resource Control, radio resource control) from scheduling UE's C-RNTI so that complete space division multiplexing from scheduling UE and master scheduling UE；
Master scheduling UE is provided with the DCI resources from scheduling UE by time division multiplexed mapping in identical time-frequency On source.
Preferably, the cell activation collection for obtaining each UE in super cell further comprises：
By each UE in each UE uplink channel characteristics acquisition of information super cell in each conventional cell Uplink received power；
The cell for safeguarding each UE according to uplink received power activates collection.
Preferably, a space division multiple access access master scheduling UE is selected from unscheduled UE according to default rule Further comprise with the access of at least one space division multiple access from scheduling UE：
The scheduled number of sub frames of selection is most, and the unscheduled UE work that the PDSCH resources taken are more Master scheduling UE is accessed for space division multiple access；
Select to activate the no common factor of collection with master scheduling UE cell and be less than in advance with master scheduling UE mutual interference At least one unscheduled UE of gating limit value is used as from scheduling UE.
Preferably, the control channel according to shared by the DCI that master scheduling UE information calculates master scheduling UE Elements C CE original positions, and calculate the cell-radio network from scheduling UE matched with master scheduling UE and face When mark C-RNTI values further comprise：
CCEs of the master scheduling UE under the default scheduling degree of polymerization under all candidate's levels is calculated in scheduling subframe Original position set；
Calculate the RNTI values from scheduling UE matched with CCE original position set elements.
Preferably, the C-RNTI from scheduling UE matched with CCE original position set elements is calculated to take Value further comprises：
Use from scheduling UE and be scheduled with the master scheduling UE identicals scheduling degree of polymerization, travel through C-RNTI values, Choose with more subframe in master scheduling CCE original position set elements have the maximum C-RNTI to occur simultaneously be used as from Dispatch UE C-RNTI.
According to another aspect of the present invention, there is provided a kind of super cell down control channel space division multiple access Access device is included with lower module：
Activation collection acquisition module, the cell for obtaining each UE in super cell activate collection；
Dispatch UE and choose module, for selecting a space division multiple access from unscheduled UE according to default rule Master scheduling UE and the access of at least one space division multiple access are accessed from scheduling UE；
C-RNTI chooses module, for shared by the DCI according to master scheduling UE information calculating master scheduling UE CCE original positions, and calculate the C-RNTI values from scheduling UE matched with master scheduling UE；
C-RNTI update modules, match somebody with somebody the C-RNTI from scheduling UE again by RRC so that from scheduling UE Space division multiplexing is completed with master scheduling UE；
Mapping block, for passing through time division multiplexed mapping by master scheduling UE and from scheduling UE DCI resources On identical running time-frequency resource.
Preferably, cell activation collection acquisition module further comprises：
Power obtaining unit, for each in the uplink channel characteristics acquisition of information super cell by each UE Uplink received powers of the UE in each conventional cell；
Activation collection maintenance unit, the cell for safeguarding each UE according to uplink received power activate collection.
Preferably, UE selections module is dispatched to further comprise：
Master scheduling UE selecting units, for selecting scheduled number of sub frames most, and the physical down taken is total to A more unscheduled UE of channel PDSCH resources is enjoyed as space division multiple access access master scheduling UE；
From scheduling UE selecting units, for select with master scheduling UE cell activation collection without occur simultaneously and with At least one unscheduled UE that master scheduling UE mutual interference is less than predetermined threshold value is used as from scheduling UE.
Preferably, C-RNTI chooses module and further comprised：
Candidate Set computing unit, master scheduling UE is calculated in scheduling subframe and is owned under the default scheduling degree of polymerization CCE original position set under candidate's level；
RNTI computing units, for calculate matched with CCE original position set elements from dispatch UE RNTI values.
According to a further aspect of the invention, there is provided a kind of base station include above-mentioned technical proposal in it is super small The down control channel space division multiple access access device in area.
The down control channel space division multiple access method of super cell provided in an embodiment of the present invention, device and Base station, by introducing SDMA, master scheduling UE is selected and from scheduling UE according to default rule, according to master The control CCE original position set shared by UE information calculating master scheduling UE DCI is dispatched, and is calculated The C-RNTI values from scheduling UE matched with master scheduling UE；The C-RNTI from scheduling UE is updated, So that complete space division multiplexing from scheduling UE and master scheduling UE；By the master scheduling UE and DCI from scheduling UE Resource on identical running time-frequency resource, can realize that control channel space division multiple access accesses by time division multiplexed mapping, The utilization rate of running time-frequency resource is improved, expands down control channel capacity, so as to lifting system capacity.
Brief description of the drawings
Fig. 1 is the structural representation of the super cell of correlation technique of the present invention；
Fig. 2 is the space division multiple access access side of the down control channel for the super cell that the embodiment of the present invention one provides The flow chart of method；
Fig. 3 is the flow chart for the C-RNTI choosing methods that the embodiment of the present invention one provides；
Fig. 4 is the schematic diagram that the present invention is the module super cell that embodiment two provides；
Fig. 5 is the control channel space division multiple access access realization device for the super cell that the embodiment of the present invention three provides Structural representation；
Fig. 6 is the structural representation for the cell activation collection acquisition module that the embodiment of the present invention three provides；
Fig. 7 is the structural representation that the scheduling UE that the embodiment of the present invention three provides chooses module；
Fig. 8 is the structural representation for the C-RNTI acquisition modules that the embodiment of the present invention three provides.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are clearer, clear, Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that this place is retouched The specific embodiment stated only to explain the present invention, is not intended to limit the present invention.
Embodiment one
As shown in Fig. 2 the down control channel space division multiple access access of super cell provided in an embodiment of the present invention Method, applied to base station, comprise the following steps：
S10, the cell activation collection for obtaining each UE in super cell.
Preferably, base station can be by each in each UE uplink channel characteristics acquisition of information super cell Uplink received powers of the UE in each CP；The cell for safeguarding each UE according to uplink received power activates collection. Each UE can be specifically ranked up in each CP uplink received power, further according to certain rule, For example uplink received power is more than default power threshold to determine activation collection.
S20, selected from unscheduled UE according to default rule a space division multiple access access master scheduling UE and At least one space division multiple access is accessed from scheduling UE.
Specifically, master scheduling UE rule can be that the scheduled number of sub frames of selection is most, and take The more unscheduled UE of PDSCH resources.
From scheduling UE rule can be：Selection and master scheduling UE cell activation collection without occur simultaneously and with Master scheduling UE mutual interference is less than in the unscheduled alternative UE of predetermined threshold value, and selection is one or more standby UE is selected to be accessed as space division multiple access from scheduling UE.
S30, the CCE start bits according to shared by the DCI that master scheduling UE information calculates master scheduling UE Put, and calculate the C-RNTI values from scheduling UE matched with master scheduling UE.
Fig. 3 is refer to, S30 further comprises in this step：
S301, in scheduling subframe master scheduling UE is calculated under the default scheduling degree of polymerization under all candidate's levels CCE original position set；
The RNTI values from scheduling UE that S302, calculating match with CCE original position set elements.
It is scheduled, travels through with the master scheduling UE identicals scheduling degree of polymerization specifically, being used from scheduling UE C-RNTI values, choose has maximum common factor with more subframe in master scheduling CCE original position set elements C-RNTI is as the C-RNTI from scheduling UE.
S40, match somebody with somebody by RRC C-RNTI from scheduling UE again so that from scheduling UE and master scheduling UE Complete space division multiplexing.
Specifically, match somebody with somebody C-RNTI again by RRC, C-RNTI is only changed here, GID Information invariabilities, its Remaining information does not change.In other words, the C-RNTI values from scheduling UE are exactly updated to being done from scheduling UE Switching within cell.
S50, by master scheduling UE with from scheduling UE DCI resources by time division multiplexed mapping in identical In frequency resource.
Specifically, space division multiple access is accessed into master scheduling UE with the DCI resources from scheduling UE in some subframes Identical running time-frequency resource is mapped under (subframe that can be multiplexed), so as to complete to be multiplexed.
A kind of down control channel space division multiple access method of super cell provided in an embodiment of the present invention, lead to Cross and SDMA is introduced to the down control channel of super cell, can realize that control channel space division multiple access accesses, improve The utilization rate of running time-frequency resource, expand down control channel capacity, so as to lifting system capacity.
Apply example two
As shown in figure 3, the embodiment of the present invention is with shared M CP, N number of UE under a super cell A Exemplified by, with reference to Fig. 2 and Fig. 4, the down control channel space division multiple access of super cell proposed by the present invention is accessed Method detailed process is described as follows：
S10, the cell activation collection for obtaining each user in super cell.
Specifically, each UE exists in the uplink channel characteristics acquisition of information super cell that base station passes through each UE Each CP uplink received power, is ranked up to each UE in each CP uplink received power, selects The link that uplink received power is more than default power threshold collects to determine to activate.The cell of each user swashs Collection living is designated as Cell Active set-UEi, and UE cell activation collection distribution is as shown in table 1 in super cell A：
UE Index:i Cell Active set-UEi C-RNTI
1 {1,2,3} 90
2 {2,3,5} 100
3 {4,5,6} 120
… … …
N {4,5,6} 150
UE cell activation collection distribution in the super cell A of table 1
S20, selected from unscheduled UE according to default rule a space division multiple access access master scheduling UE and At least one space division multiple access is accessed from scheduling UE.
As shown in table 1, in A super cells, UE1Master scheduling UE is chosen for, its cell activation collection is Cell Active set-UE1={ 1,2,3 }.Visible, the UE by table 13Cell activation integrate as Cell Active set-UE3={ 4,5,6 }, UENCell activation integrate as Cell Active set-UEN={ 4,5,6 } and UE1Cell Activation collection is no overlapping, meets that the mutual interference with master scheduling UE is less than predetermined threshold condition, UE3And UEN It is chosen for from scheduling UE.
S30, the CCE start bits according to shared by the DCI that master scheduling UE information calculates master scheduling UE Put, and calculate the C-RNTI values from scheduling UE matched with master scheduling UE.
For example, base station (i.e. CCENum=4, can represent what DCI scheduling used according to 4CCE 4) degree of polymerization number is dispatches master scheduling UE (UE1), according to the configuration of super cell, under each subframe One, which shares 88 CCE, to dispatch, when calculating master scheduling UE1 and being scheduled according to 4CCE, every CCE original position set under individual subframe is designated as P-CCE-Set, as shown in table 2：
P-CCE-Set under 10 subframes of the master scheduling UE of table 2 when 4CCE is dispatched
Accordingly, to from scheduling UE3And UENC-RNTI be determined.Specifically, from scheduling UE It is scheduled using 4CCE, travels through C-RNTI values, is chosen and master scheduling UE (C-RNTI=90) can be with P-CCE-Set and S-CCE-Set has the maximum C-RNTI to occur simultaneously as from scheduling UE's under more subframe C-RNTI。
Such as table 3 below, 4 value to be obtained after traversal, as C-RNTI=12098, in subframe 0,1,2,3, From scheduling UE1 (UE under 63) and master scheduling UE (UE1) DCI take identical resource；When During C-RNTI=55335, from scheduling UE2 (UE under subframe 4,5,7N) and master scheduling UE (UE1) DCI take identical resource.
Table 3 is from S-CCE-Set under 10 subframes of the scheduling UE1 when 4CCE is dispatched
Table 4 is from S-CCE-Set under 10 subframes of the scheduling UE2 when 4CCE is dispatched
S40, match somebody with somebody by RRC C-RNTI from scheduling UE again so that from scheduling UE and master scheduling UE Complete space division multiplexing.
Matched somebody with somebody again by RRC from scheduling UE3And UENC-RNTI, only change C-RNTI, GID information is not Become, remaining information does not change, so that will be from scheduling UE3And UENDo switching within cell.That is UE3's C-RNTI is updated to 12098, UE by 120NC-RNTI be updated to 55335 by 150.
S50, by master scheduling UE with from scheduling UE DCI resources by time division multiplexed mapping in identical In frequency resource.
Specifically, by step S10~S40 operation, realize master scheduling UE1 with from scheduling UE3, UEN DCI in subframe 0,1,2,3,4,5,7 takes identical running time-frequency resource.In PDCCH thing When managing resource impact, space division multiple access is accessed into master scheduling UE and accessed with space division multiple access from the money for dispatching UEDCI Source is mapped to identical running time-frequency resource under above-mentioned subframe.
The embodiment of the present invention only with super cell A share M CP, N number of UE, master scheduling UE's The scheduling degree of polymerization illustrates access procedure exemplified by being 4CCE, reality also has various embodiments when implementing.Example Such as, master and slave scheduling UE can be scheduled using the different degree of polymerization, or for common space and proprietary Space can also complete the alternatives such as PDCCH spatial reuses when having overlapping.
Embodiment three
A kind of as shown in figure 5, down control channel space division multiple access of super cell provided in an embodiment of the present invention Access device, including activation collection acquisition module 10, scheduling UE choose module 20, C-RNTI chooses module 30th, C-RNTI update modules 40 and mapping block 50.
Activation collection acquisition module 10, the cell for obtaining each UE in super cell activate collection.
As shown in fig. 6, cell activation collection acquisition module 10 further comprises power obtaining unit 101 and activation Collect maintenance unit 102, wherein：
Power obtaining unit 101, in the uplink channel characteristics acquisition of information super cell by each UE Uplink received powers of each UE in each conventional cell.
Activation collection maintenance unit 102, the cell for safeguarding each UE according to uplink received power activate collection.
Dispatch UE and choose module 20, for selecting a space division from unscheduled UE according to default rule Multiple access accesses master scheduling UE and the access of at least one space division multiple access from scheduling UE.
As shown in fig. 7, scheduling UE, which chooses module 20, further comprises the He of master scheduling UE selecting units 201 From scheduling UE selecting units 202, wherein：
Master scheduling UE selecting units 201, for selecting scheduled number of sub frames most, and under the physics taken A more unscheduled UE of row shared channel PDSCH resources is as space division multiple access access master scheduling UE.
From scheduling UE selecting units 202, for select with master scheduling UE cell activation collection without occur simultaneously, And it is used as with master scheduling UE mutual interference less than at least one unscheduled UE of predetermined threshold value from scheduling UE.
C-RNTI chooses module 30, for calculating master scheduling UE descending control according to master scheduling UE information Control channel element CCE original positions shared by information DCI processed, and calculate what is matched with master scheduling UE From scheduling UE Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI values.
As shown in figure 8, C-RNTI, which chooses module 30, further comprises Candidate Set computing unit 301 and RNTI Computing unit 302, wherein：
Candidate Set computing unit 301, master scheduling UE is calculated in scheduling subframe under the default scheduling degree of polymerization CCE original position set under all candidate's levels.
RNTI computing units 302, for calculate matched with CCE original position set elements from scheduling UE RNTI values.
C-RNTI update modules 40, matched somebody with somebody again by radio resource control RRC from scheduling UE's C-RNTI so that complete space division multiplexing from scheduling UE and master scheduling UE.
Mapping block 50, for by master scheduling UE with from scheduling UE DCI resources by time division multiplexing reflect Penetrate on identical running time-frequency resource.
It should be noted that present apparatus embodiment is corresponding with above method embodiment one and embodiment two, Technical characteristic in above method embodiment one and embodiment two is same corresponding applicable in present apparatus embodiment, Here no longer repeat.
In addition, present invention also offers a kind of base station, the base station is included under the super cell of above-described embodiment Row control channel space division multiple access access device.The technical scheme of said apparatus is equally applicable in this base station.
The down control channel space division multiple access access device of super cell provided in an embodiment of the present invention and base station, By introducing SDMA, master scheduling UE is selected and from scheduling UE according to default rule, according to master scheduling UE information calculates the control CCE original position set shared by master scheduling UE DCI, and calculates and master Dispatch the C-RNTI values from scheduling UE of UE matchings；Update the C-RNTI from scheduling UE so that Space division multiplexing is completed from scheduling UE and master scheduling UE；By master scheduling UE and the DCI resources from scheduling UE By time division multiplexed mapping on identical running time-frequency resource, it can realize that control channel space division multiple access accesses, improve The utilization rate of running time-frequency resource, expand down control channel capacity, so as to lifting system capacity.
One of ordinary skill in the art will appreciate that realize that all or part of step in above-described embodiment method is By program the hardware of correlation can be controlled to complete, described program can be to be stored in one computer-readable Take in storage medium, described storage medium, such as ROM/RAM, disk, CD.
Above by reference to the preferred embodiments of the present invention have been illustrated, not thereby limit to the right model of the present invention Enclose.Those skilled in the art do not depart from any modification made in the scope of the present invention and essence, equivalent substitution And improvement, all should be within the interest field of the present invention.

Claims (10)

  1. A kind of 1. down control channel space division multiple access method of super cell, it is characterised in that this method Comprise the following steps：
    Obtain the cell activation collection of each UE in super cell；
    A space division multiple access access master scheduling UE and at least one is selected from unscheduled UE according to default rule Individual space division multiple access is accessed from scheduling UE；
    Shared by the Downlink Control Information DCI for calculating the master scheduling UE according to the information of the master scheduling UE Control channel element CCE original positions, and calculate matched with master scheduling UE from dispatch UE it is small Area's Radio Network Temporary Identifier C-RNTI values；
    By radio resource control RRC again with the C-RNTI from scheduling UE so that from scheduling UE and master scheduling UE completes space division multiplexing；
    By the master scheduling UE with it is described from scheduling UE DCI resources by time division multiplexed mapping identical Running time-frequency resource on.
  2. 2. down control channel space division multiple access method according to claim 1, it is characterised in that Each UE cell activation collection further comprises in the acquisition super cell：
    By each UE in each UE uplink channel characteristics acquisition of information super cell in each conventional cell Uplink received power；
    The cell for safeguarding each UE according to the uplink received power activates collection.
  3. 3. down control channel space division multiple access method according to claim 1, it is characterised in that It is described to select a space division multiple access access master scheduling UE and at least one from unscheduled UE according to default rule Individual space division multiple access access further comprises from scheduling UE：
    The scheduled number of sub frames of selection is most, and the Physical Downlink Shared Channel PDSCH resources taken are more One unscheduled UE is as space division multiple access access master scheduling UE；
    Select mutually dry without common factor and with the master scheduling UE with the cell of master scheduling UE activation collection At least one unscheduled UE disturbed less than predetermined threshold value is used as from scheduling UE.
  4. 4. down control channel space division multiple access method according to claim 1, it is characterised in that Shared by the Downlink Control Information DCI for calculating the master scheduling UE according to the information of the master scheduling UE Control channel element CCE original positions, and calculate matched with master scheduling UE from dispatch UE cell without Line Network Temporary Identifier C-RNTI values further comprise：
    CCEs of the master scheduling UE under the default scheduling degree of polymerization under all candidate's levels is calculated in scheduling subframe Original position set；
    Calculate the C-RNTI values from scheduling UE matched with the CCE original positions set element.
  5. 5. down control channel space division multiple access method according to claim 4, it is characterised in that The C-RNTI values from scheduling UE matched with the CCE original positions set element that calculate are entered One step includes：
    Described used from scheduling UE is scheduled with the master scheduling UE identicals scheduling degree of polymerization, travels through C-RNTI Value, choosing more subframe in the CCE original position set elements with homophony UE has the maximum C-RNTI to occur simultaneously As the C-RNTI from scheduling UE.
  6. A kind of 6. down control channel space division multiple access access device of super cell, it is characterised in that the device Including with lower module：
    Activation collection acquisition module, the cell for obtaining each UE in super cell activate collection；
    Dispatch UE and choose module, for selecting a space division multiple access from unscheduled UE according to default rule Master scheduling UE and the access of at least one space division multiple access are accessed from scheduling UE；
    C-RNTI chooses module, for calculating the master scheduling UE's according to the information of the master scheduling UE Control channel element CCE original positions shared by Downlink Control Information DCI, and calculate and master scheduling UE The Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI values from scheduling UE of matching；
    C-RNTI update modules, by radio resource control RRC again with described from scheduling UE's C-RNTI so that complete space division multiplexing from scheduling UE and master scheduling UE；
    Mapping block, for the master scheduling UE and the DCI resources from scheduling UE to be passed through into the time-division Multiplexing mapping is on identical running time-frequency resource.
  7. 7. down control channel space division multiple access access device according to claim 6, it is characterised in that The cell activation collection acquisition module further comprises：
    Power obtaining unit, for each in the uplink channel characteristics acquisition of information super cell by each UE Uplink received powers of the UE in each conventional cell；
    Activation collection maintenance unit, the cell for safeguarding each UE according to the uplink received power activate collection.
  8. 8. down control channel space division multiple access access device according to claim 6, it is characterised in that The scheduling UE chooses module and further comprised：
    Master scheduling UE selecting units, for selecting scheduled number of sub frames most, and the physical down taken is total to A more unscheduled UE of channel PDSCH resources is enjoyed as space division multiple access access master scheduling UE；
    From scheduling UE selecting units, for select with the cell of master scheduling UE activation collection without occur simultaneously, And it is used as with the mutual interference of the master scheduling UE less than at least one unscheduled UE of predetermined threshold value from scheduling UE。
  9. 9. down control channel space division multiple access access device according to claim 6, it is characterised in that The C-RNTI chooses module and further comprised：
    Candidate Set computing unit, master scheduling UE is calculated in scheduling subframe and is owned under the default scheduling degree of polymerization CCE original position set under candidate's level；
    RNTI computing units, for calculate matched with the CCE original positions set element from scheduling UE RNTI values.
  10. 10. a kind of base station, it is characterised in that the base station will including claim 6-9 any one right Seek the down control channel space division multiple access access device of described super cell.
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