CN102905370A - System and method for implementation of control channel resource allocation - Google Patents
System and method for implementation of control channel resource allocation Download PDFInfo
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- CN102905370A CN102905370A CN2011102109999A CN201110210999A CN102905370A CN 102905370 A CN102905370 A CN 102905370A CN 2011102109999 A CN2011102109999 A CN 2011102109999A CN 201110210999 A CN201110210999 A CN 201110210999A CN 102905370 A CN102905370 A CN 102905370A
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- 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
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- 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
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Abstract
The invention discloses a system and a method for implementation of control channel resource allocation. A pre-coded control channel can be mapped from a first OFDM (orthogonal frequency division multiplexing) code of an ABS (almost blank subframe) when no scheduling R8/R9/R10 UE (user equipment) is in the ABS. The control channel resource allocation technology implemented by the system and the method can be applied to control channel resource allocation and indication optimization of LTER10 subsequent versions. Resource utilization efficiency is improved and control channel covering power is improved by making full use of the UE bearing no information in the ABS, and UE energy conservation and reduction of control channel blind test complexity for the UE are both benefited.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of method and system of realizing the control channel resource distribution.
Background technology
In order to improve the capacity of Cellular Networks, under macrocell (Macro cell) covers, introduced low power nodes (Low Power Node, LPN) and consisted of some Microcells.Increase the network system throughput by making subscriber equipment (User Equipment, UE) in the macrocell scope access these Microcells.When these Microcells all dispensing independently during the ID of residential quarter, these Microcells just are equivalent to an independently residential quarter.In order to make user as much as possible be linked into Microcell, thereby the load of macrocell is reduced, and realize reusing of running time-frequency resource, usually when UE carries out macrocell and the switching of LPN minizone, received signal power in the LPN residential quarter adds the biasing with respect to the macrocell received power, so that UE can priority access LPN residential quarter in the process of determining the access residential quarter in two residential quarter received powers relatively.In this case, the UE of some LPN residential quarter receives may be less than the power of the macro base station that receives (Macro eNB, MeNB) from the signal power of LPN, thereby be subject to the interference from macrocell, and these UE are called the edge UE of LPN residential quarter.
In order to reduce the interference to LPN cell edge UE, at LTE version (Release, R) in 10, macrocell configures gap frame (the Almost Blank Subframe of some usually by the cycle, ABS), in ABS, MeNB can be by not sending or low-power sends data to reduce the interference to LPN cell edge UE.LPN residential quarter and macrocell are after realizing synchronizing sub-frame, and the edge UE of LPN residential quarter can be subjected to receive data in the subframe of LPN residential quarter of macrocell ABS protection and not be subjected to the severe jamming of macro residential quarter at these.In addition, in ABS, still need to keep original public reference signal (Common Reference Signal), broadcast channel (PBCH), synchronously main/auxiliary synchronous signals (PSS/SSS), if 0/1/5/6 subframe of 0/4/5/9 subframe of FDD (Frequency Division Duplexing (FDD)) system or TDD (time division duplex) system is configured to ABS by macrocell, then may there be respectively some public informations in the Physical Downlink Shared Channel of these ABS (PDSCH) and the Physical Downlink Control Channel (PDCCH), such as calling out (paging), system information block (SIB), Random Access Channel (RACH), and the corresponding Downlink Control Information of these public informations (Downlink Control Information, DCI).
In order further to avoid the interference in the heterogeneous network, increase simultaneously the control channel capacity, after LTE R10, in the research of version, proposed to be similar to relay and control channel (Relay PDCCH, R-PDCCH) enhancing control channel (Enhanced PDCCH, E-PDCCH) design.R-PDCCH is one group of Resource Block by the semi-static configuration of base station end (Resource Block, RB), be usually located on first time slot PDSCH resource of a subframe, its control channel unit (Control channel Element, CCE) can be a RB on the PDSCH.The characteristics of R-PDCCH are the reference signals (UE-specific Reference Signal, URS) that adopted UE proprietary.The characteristics of URS are only to send in the resource of using, and have carried out the precoding processing in spatial domain, thereby can not need to know employed precoding by the direct demodulation corresponding data of URS.So that also can be as the data channel resource carrying out the launching beam adjustment with precoding, control channel avoids interference to some UE like this.The original position of this control channel is positioned at PDCCH in the common subframe of non-ABS after, can avoid like this interference to the PDCCH of the UE of R8/R9/R10, avoid interference to the PDSCH of other UE by the wave beam adjustment simultaneously.
In ABS, can low-power the UE of scheduling R8/R9/R10.The scheduling of described low-power is subject to the distance of MeNB and nearest LPN edge UE, so the quantity of the UE of schedulable R8/R9/R10 is limited.In order to improve the resource utilization of ABS, can consider in all or part ABS, only to dispatch the UE that has based on the control channel of URS.Current R-PDCCH design only considers in common subframe and transmits, and namely the time domain original position is first OFDM (OFDM) symbol behind the PDCCH in its subframe.But, ABS for the UE that does not dispatch R8/9/10, if the OFDM sign-on after PDCCH mapping control channel, then these are not dispatched among the PDCCH of ABS of UE of R8/9/10 and do not transmit user profile, thereby most of transfer resource is wasted.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system of realizing the control channel resource distribution, to improve the level of resources utilization.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes the control channel resource distribution, the method comprises:
When in gap frame ABS, not dispatching the user equipment (UE) of version R8/R9/R10, will be through first orthogonal frequency division multiplex OFDM sign-on mapping from described ABS of the control channel of precoding.
The method also comprises: the original position of the described control channel mapping of indication UE.
Indicate the method for described original position to be:
Base station side is notified its ABS configuration mode of UE by the mode of radio resource control RRC signaling; Or,
Base station side is notified its enhancing control channel of UE E-PDCCH initial OFDM character position of mapping by the mode of Physical Control Format Indicator Channel PCFICH indication.
When base station side was notified its ABS configuration mode of UE by the mode of RRC signaling, the content of RRC signaling was the bit mapping bitmap of described ABS within a configuration cycle, or predetermined configuration mode call number;
When base station side was notified the initial OFDM character position of its E-PDCCH mapping of UE by the mode of PCFICH indication, the OFDM symbolic number of utilizing the control format that keeps in the LTE R10 agreement to indicate CFI codeword sequence configures physical down control channel PDCCH to take was 0 indication information.
The method also comprises:
When having sent public information among the described ABS, utilize the shared OFDM symbolic number of PCFICH indication PDCCH of the ABS that has sent public information; This moment, whether all the OFDM sign-on after the shared OFDM symbol area of the PDCCH of PCFICH indication shone upon E-PDCCH no matter by the configuration information of RRC signaling to UE transmission ABS; Or,
When having sent public information among the described ABS, utilize the shared OFDM symbolic number of PCFICH indication PDCCH of the ABS that has sent public information; After having sent the configuration information of ABS by the RRC signaling to UE, E-PDCCH is not that first OFDM of 0 ABS begins mapping from the shared OFDM symbolic number of PCFICH indication PDCCH; In the mapping process, for the ABS that may send public information, suppose that the public search space in PDCCH zone is configured by the configurable control channel of maximum unit CCE number, and avoid through resource unit group REG interweave and shine upon after shared REG; And, the RE of the E-PDCCH these REG near is carried out rate-matched.
The method also comprises: UE blind check E-PDCCH; In this blind check process, for the ABS that may send public information, UE supposition public search space is configured by the configurable CCE number of maximum, avoid these interweave through REG and shine upon after the shared REG position scanning frequency rate of going forward side by side mate and then the proprietary E-PDCCH of blind check UE.
The only mapping of the sign-on E-PDCCH after the PDCCH of possible maximum symbolic number, no matter and whether PDCCH has the proprietary DCI of UE;
The corresponding PDSCH of described E-PDCCH has identical OFDM primary sign position with E-PDCCH.
A kind of system that realizes the control channel resource distribution, this system comprise UE scheduling decision unit, map unit; Wherein,
Described UE scheduling decision unit is used for confirming that ABS does not dispatch the UE of R8/R9/R10;
Described map unit is used for when described UE scheduling decision unit confirms that ABS does not dispatch the UE of R8/R9/R10, will shine upon through the control channel of precoding first OFDM sign-on from described ABS.
Described map unit also is used for: the original position of the described control channel mapping of indication UE.
Described map unit is used for when the described original position of indication:
Notify its ABS configuration mode of UE by the mode of RRC signaling; Or,
Notify the UE initial OFDM character position of its E-PDCCH mapping by the mode of PCFICH indication.
When notifying its ABS configuration mode of UE by the mode of RRC signaling, the content of RRC signaling is the bitmap of described ABS within a configuration cycle, or predetermined configuration mode call number;
When notifying the initial OFDM character position of its E-PDCCH mapping of UE by the mode of PCFICH indication, described map unit is used for: the OFDM symbolic number that the CFI codeword sequence configuration PDCCH that utilizes LTE R10 agreement to keep takies is 0 indication information.
When having sent public information among the described ABS, described map unit is used for: the shared OFDM symbolic number of PCFICH indication PDCCH of utilizing the ABS that has sent public information; This moment, whether all the OFDM sign-on after the shared OFDM symbol area of the PDCCH of PCFICH indication shone upon E-PDCCH no matter by the configuration information of RRC signaling to UE transmission ABS; Or,
When having sent public information among the described ABS, described map unit is used for: the shared OFDM symbolic number of PCFICH indication PDCCH of utilizing the ABS that has sent public information; After having sent the configuration information of ABS by the RRC signaling to UE, E-PDCCH is not that first OFDM of 0 ABS begins mapping from the shared OFDM symbolic number of PCFICH indication PDCCH; In the mapping process, for the ABS that may send public information, shine upon first public information, shine upon again E-PDCCH information, and mapping avoid during E-PDCCH public information interweave through REG and shine upon after shared REG; And, the RE of the E-PDCCH these REG near is carried out rate-matched.
Described UE is used for: blind check E-PDCCH; In this blind check process, for the ABS that may send public information, first blind check public information after detecting and obtain the REG mapping position, is avoided these positions go forward side by side scanning frequency rate coupling and then the proprietary E-PDCCH of blind check UE.
Described map unit is used for:
The only mapping of the sign-on E-PDCCH after the PDCCH of possible maximum symbolic number, no matter and whether PDCCH has the proprietary DCI of UE;
The corresponding PDSCH of described E-PDCCH has identical OFDM primary sign position with E-PDCCH.
The present invention realizes the technology of control channel resource distribution, can be applied to the control channel resource distribution of LTE R10 later release and the optimization of indication.By taking full advantage of among the ABS the not RE of beared information, improve the level of resources utilization and improved the control channel covering power, energy-conservation and reduce UE the blind check complexity of above-mentioned control channel is all had beneficial effect to UE.
Description of drawings
Fig. 1 is the scene schematic diagram of the macro+pico of the embodiment of the invention;
Fig. 2 is the E-PDCCH primary sign position view of the embodiment of the invention;
Fig. 3 is the E-PDCCH original position indication flow chart of the embodiment of the invention;
Fig. 4 is the flow chart that passes through Physical Control Format Indicator Channel (PCFICH) indication E-PDCCH original position of the embodiment of the invention;
Fig. 5 is the flow chart that passes through notice ABS configuration mode indication E-PDCCH original position of the embodiment of the invention;
Fig. 6 is the general flow chart that the embodiment of the invention realizes the control channel resource distribution;
Fig. 7 is the system diagram that the embodiment of the invention realizes the control channel resource distribution.
Embodiment
When practical application, in the situation of the UE that does not dispatch R8/R9/R10 among the ABS, can be from first OFDM sign-on mapping of ABS through the control channel of precoding.In order to make mapping that UE can know its control channel resource from first OFDM sign-on, base station side can be indicated by dual mode the original position of UE control channel mapping.Wherein a kind of mode is by the PCFICH indication, and another kind of mode is by Radio Resource control (RRC) signaling (the RRC signaling or the system message SIB that comprise clean culture).When UE detects above-mentioned indication from the mapping of first OFDM sign-on, then carry out control channel from first OFDM sign-on of indicated ABS and detect.
Need to prove, when base station side was notified its ABS configuration mode of UE by the mode of RRC signaling, the content of RRC signaling can be bit mapping (bitmap) or the predetermined configuration mode call number of described ABS within a configuration cycle.After knowing the ABS configuration information, UE just can judge accordingly that the E-PDCCH on which subframe shines upon from first OFDM sign-on.
When base station side is notified the initial OFDM character position of its E-PDCCH mapping of UE by the mode of PCFICH indication, can utilize control format indication (the Control format Indicator of reservation, CFI) the OFDM symbolic number of codeword sequence configuration PDCCH is 0 indication information, thereby makes the UE with this information capability of identification can judge that E-PDCCH is from first OFDM sign-on mapping in current subframe.
When having sent public information among the described ABS, can utilize the shared OFDM symbolic number of PCFICH indication PDCCH of the ABS that has sent public information.This moment, whether all the OFDM sign-on after the shared OFDM symbol area of the PDCCH of PCFICH indication shone upon E-PDCCH no matter by the configuration information of RRC signaling to UE transmission ABS.Described public information may be paging (paging), SIB, RACH etc.
In addition, when having sent public information among the described ABS, also can utilize the shared OFDM symbolic number of PCFICH indication PDCCH of the ABS that has sent public information.After having sent the configuration information of ABS by the RRC signaling to UE, E-PDCCH is not that first OFDM of 0 ABS begins mapping from the shared OFDM symbolic number of PCFICH indication PDCCH.In the mapping process, suppose that the public search space in PDCCH zone is by the configurable control channel of maximum unit (Control Channel Element, CCE) number is configured (in LTE R8/9/10,8 CCE of the 1st CCE to the from the search volume), and avoid through resource unit group (Source Element Group, REG) interweave and shine upon after shared REG.And, the RE of the E-PDCCH these REG near is carried out rate-matched.In the shared OFDM symbolic number of PCFICH indication PDCCH is not 0 ABS, be to shine upon first public information from the another kind of method of first OFDM sign-on mapping E-PDCCH, and then mapping E-PDCCH.In this process, the mapping of E-PDCCH is avoided by the shared REG of public information, the scanning frequency of going forward side by side rate coupling.The CCE quantity that second method does not need public information is taken is supposed.
UE can suppose that the public search space in PDCCH zone configures by the configurable CCE number of maximum in the process of blind check E-PDCCH, and avoid through resource interweave and shine upon after shared REG.And the RE of the E-PDCCH these REG near carries out rate-matched, then carries out blind check.When carrying out blind check, UE can first blind check public information, after detecting and obtain the REG mapping position, avoids these positions go forward side by side scanning frequency rate coupling and then the proprietary E-PDCCH of blind check UE.
In actual applications, also can limit E-PDCCH can only shine upon by the sign-on after the PDCCH of possible maximum symbolic number, no matter and whether PDCCH has the proprietary DCI of UE.
Based on the mapping of above E-PDCCH, the corresponding PDSCH of E-PDCCH has identical OFDM primary sign position with E-PDCCH.
The present invention will be described below in conjunction with accompanying drawing and embodiment.
Can consider the configuration structure of macro+pico as shown in Figure 1.Among Fig. 1, the pico residential quarter has distributed in the macrocell coverage area.For the UE that guarantees to be in the pico cell edge can proper communication, macro has configured some ABS, in the ABS of these configurations subframe, MeNB can low-power the UE of scheduling R8/R9/R10/R11, also can only dispatch the UE of R11 and avoid interference to pico edge UE by the wave beam cooperation.In ABS, if do not dispatch the UE of R8/R9/R10, then the E-PDCCH of the UE of R11 and PDSCH can be from first sign-on mappings of the ABS subframe that satisfies this condition, in order to take full advantage of resource.
Embodiment 1:
As shown in Figure 3, do not dispatch the UE of R8/R9/R10 among the ABS that configures in the embodiment of the invention, indicate UE whether to carry out blind check from first OFDM sign-on by the mode of RRC signaling.
In the case, the flow process of E-PDCCH resource distribution and user detection is as follows:
MeNB sends the ABS configuration information to the UE of R11.The ABS configuration mode can be the bitmap of 40 bits, corresponding subframe of each bit wherein, and 40 altogether corresponding 40 subframes of bits as shown in Figure 3, can represent ABS and represent non-ABS with 0 with 1, namely the bitmap of ABS can be configured among the figure:
[0?0?0?0?1?1?0?0?0?1?0?0?0?1?1?0?0?0?0?1?0?0?0?0?1?1?0?0?0?1?0?0?0?0?1?0?0?0?0?1]。
This bitmap can be pre-configured several patterns, and every kind of pattern represents with a call number, and mode that then can the applicative notifications call number makes UE know ABS in these 40 subframes, and wherein, each bit represents a subframe.These 40 subframes are included in 4 radio frames, wherein first radio frame number n
fSatisfy mod (n
f, 4)=0.
This example implementation process can be described as:
Step 301: judge that current subframe is ABS;
Step 302: the subframe numbers of judging current ABS is 0,4,5,9 (may include public information among the PDCCH) whether, if so, enter step 305; Otherwise, enter step 303.
Step 303: base station side is from first OFDM sign-on mapping E-PDCCH.
Step 304:UE is from first OFDM sign-on blind check E-PDCCH, process ends.
Step 305: base station side is according to public information shared symbolic number configuration CFI in PDCCH, and begins to shine upon E-PDCCH after the indicated symbol of CFI.
Step 306:UE side detects the CFI value among the PCFICH, and the OFDM sign-on blind check E-PDCCH after the indicated OFDM symbolic number of CFI.
Embodiment 2:
Be different from embodiment 1, whether the PDCCH by configuration CFI indication in the present embodiment takies symbolic number is 0 to indicate the mapping of E-PDCCH from the 1st OFDM sign-on of current subframe.As shown in Figure 4, in the embodiment of the invention, the primary sign position of E-PDCCH and corresponding PDSCH is indicated by PCFICH.In existing 3GPP agreement 36.212, configured CFI indication as shown in table 1:
PDCCH symbolic number and the code word corresponding relation thereof of table 1.CFI indication
Can utilize in the table 1 CFI that keeps to be configured to 4 full null sequence code word and indicate current E-PDCCH from first OFDM sign-on mapping of current subframe, namely the OFDM symbolic number that takies of PDCCH is 0.
In the case, the flow process of E-PDCCH resource distribution and user detection is as follows:
Step 401: current subframe is ABS;
Step 402: judge that whether current subframe numbers is 0,4,5,9, if so, enters step 403; Otherwise, enter step 405;
Step 403: base station side configuration CFI indication PDCCH symbolic number, and the mapping of the sign-on after the PDCCH of current subframe E-PDCCH;
Step 404:UE detects PCFICH, knows the symbolic number that PDCCH takies by the CFI that detects, and the sign-on blind check E-PDCCH after PDCCH, process ends;
Step 405: the base station is measured puts CFI indication PDCCH to take the OFDM symbolic number is 0 code word, and from first OFDM sign-on mapping of current subframe E-PDCCH, shown in c among Fig. 2;
Step 406:UE detects PCFICH, and the OFDM symbolic number of knowing PDCCH by detecting CFI is 0 o'clock, from first OFDM sign-on blind check of current subframe E-PDCCH.
Embodiment 3:
What be different from embodiment 2 is, do not indicate whether from first OFDM sign-on mapping of current ABS subframe E-PDCCH by CFI in the present embodiment, but by the RRC signaling ABS during with which subframe of the form notice UE of the bitmap of ABS.What be different from embodiment 1 is, is not the OFDM sign-on mapping E-PDCCH after PDCCH in 0,4,5,9 subframes in the present embodiment, but all the time from first OFDM sign-on.As shown in Figure 5, in the embodiment of the invention, MeNB is the UE of scheduling R8/9/10 in ABS not.In ABS, the E-PDCCH of the UE of R11 and PDSCH are always from first OFDM sign-on mapping.At this moment need and to notify UE to R11 the ABS configuring condition by the RRC signaling, so that UE is known from the subframe of first sign-on mapping.
In the case, the flow process of E-PDCCH resource distribution and user detection is as follows:
Step 501: judge that current subframe is ABS;
Step 502: judge that whether current subframe numbers is 0,4,5,9, if so, enters step 503; Otherwise, enter step 506;
Step 503: the indicated PDCCH symbolic number of base station side configuration CFI is possible maximum, and from first OFDM sign-on mapping of current subframe E-PDCCH, shown in a among Fig. 2;
The search volume of step 504:MeNB supposition PDCCH in mapping E-PDCCH process is configured to maximum, and namely public search space takies the 1st to the 8th CCE of search volume.After REG corresponding to these CCE was interleaved and shines upon, E-PDCCH avoided these REG in mapping process, the scanning frequency of going forward side by side rate coupling.
Public search space among the step 505:UE supposition PDCCH is the REG position after the 1st to the 8th CCE also can determine to interweave thus.In to E-PDCCH blind check process, when the corresponding REG of PDCCH common signal channel is arranged in Physical Resource Block (PRB) is arranged, UE then gives tacit consent to the information that does not have needs among these REG, and carries out rate-matched and blind check by the mode of predesignating, shown in a among Fig. 2.Process ends.
Step 506: if current ABS subframe numbers is not 0,4,5,9, base station side is from the 1st OFDM sign-on mapping of current subframe E-PDCCH, and mapping mode is shown in c among Fig. 2.
When step 507:UE carried out the E-PDCCH blind check, acquiescence E-PDCCH was from first OFDM sign-on mapping.
In conjunction with above technical description as can be known, the present invention realizes that the operation thinking of control channel resource distribution can represent flow process as shown in Figure 6, and this flow process may further comprise the steps:
Step 610: the UE that confirms not dispatch among the ABS R8/R9/R10.
Step 620: will be through first OFDM sign-on mapping from described ABS of the control channel of precoding.
In order to guarantee that above-mentioned technical description and operation thinking can realize smoothly, can carry out setting as shown in Figure 7.Referring to Fig. 7, Fig. 7 is the system diagram that the embodiment of the invention realizes the control channel resource distribution, and this system comprises continuous UE scheduling decision unit, map unit.
When practical application, UE scheduling decision unit can confirm not dispatch among the ABS UE of R8/R9/R10.Map unit can be when described UE scheduling decision unit be confirmed not dispatch the UE of R8/R9/R10 among the ABS, will shine upon through the control channel of precoding first OFDM sign-on from described ABS.
In sum as seen, no matter be method or system, the present invention realizes the technology of control channel resource distribution, can be applied to the control channel resource distribution of LTE R10 later release and the optimization of indication.By taking full advantage of among the ABS the not RE of beared information, improve the level of resources utilization and improved the control channel covering power, energy-conservation and reduce UE the blind check complexity of above-mentioned control channel is all had beneficial effect to UE.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (14)
1. a method that realizes the control channel resource distribution is characterized in that, the method comprises:
When in gap frame ABS, not dispatching the user equipment (UE) of version R8/R9/R10, will be through first orthogonal frequency division multiplex OFDM sign-on mapping from described ABS of the control channel of precoding.
2. method according to claim 1 is characterized in that, the method also comprises: the original position of the described control channel mapping of indication UE.
3. method according to claim 2 is characterized in that, indicates the method for described original position to be:
Base station side is notified its ABS configuration mode of UE by the mode of radio resource control RRC signaling; Or,
Base station side is notified its enhancing control channel of UE E-PDCCH initial OFDM character position of mapping by the mode of Physical Control Format Indicator Channel PCFICH indication.
4. method according to claim 3 is characterized in that,
When base station side was notified its ABS configuration mode of UE by the mode of RRC signaling, the content of RRC signaling was the bit mapping bitmap of described ABS within a configuration cycle, or predetermined configuration mode call number;
When base station side was notified the initial OFDM character position of its E-PDCCH mapping of UE by the mode of PCFICH indication, the OFDM symbolic number of utilizing the control format that keeps in the LTE R10 agreement to indicate CFI codeword sequence configures physical down control channel PDCCH to take was 0 indication information.
5. according to claim 1 to 4 each described methods, it is characterized in that, the method also comprises:
When having sent public information among the described ABS, utilize the shared OFDM symbolic number of PCFICH indication PDCCH of the ABS that has sent public information; This moment, whether all the OFDM sign-on after the shared OFDM symbol area of the PDCCH of PCFICH indication shone upon E-PDCCH no matter by the configuration information of RRC signaling to UE transmission ABS; Or,
When having sent public information among the described ABS, utilize the shared OFDM symbolic number of PCFICH indication PDCCH of the ABS that has sent public information; After having sent the configuration information of ABS by the RRC signaling to UE, E-PDCCH is not that first OFDM of 0 ABS begins mapping from the shared OFDM symbolic number of PCFICH indication PDCCH; In the mapping process, for the ABS that may send public information, suppose that the public search space in PDCCH zone is configured by the configurable control channel of maximum unit CCE number, and avoid through resource unit group REG interweave and shine upon after shared REG; And, the RE of the E-PDCCH these REG near is carried out rate-matched.
6. method according to claim 5 is characterized in that, the method also comprises: UE blind check E-PDCCH; In this blind check process, for the ABS that may send public information, UE supposition public search space is configured by the configurable CCE number of maximum, avoid these interweave through REG and shine upon after the shared REG position scanning frequency rate of going forward side by side mate and then the proprietary E-PDCCH of blind check UE.
7. according to claim 1 to 4 each described methods, it is characterized in that,
The only mapping of the sign-on E-PDCCH after the PDCCH of possible maximum symbolic number, no matter and whether PDCCH has the proprietary DCI of UE;
The corresponding PDSCH of described E-PDCCH has identical OFDM primary sign position with E-PDCCH.
8. a system that realizes the control channel resource distribution is characterized in that, this system comprises UE scheduling decision unit, map unit; Wherein,
Described UE scheduling decision unit is used for confirming that ABS does not dispatch the UE of R8/R9/R10;
Described map unit is used for when described UE scheduling decision unit confirms that ABS does not dispatch the UE of R8/R9/R10, will shine upon through the control channel of precoding first OFDM sign-on from described ABS.
9. system according to claim 8 is characterized in that, described map unit also is used for: the original position of the described control channel mapping of indication UE.
10. system according to claim 9 is characterized in that, described map unit is used for when the described original position of indication:
Notify its ABS configuration mode of UE by the mode of RRC signaling; Or,
Notify the UE initial OFDM character position of its E-PDCCH mapping by the mode of PCFICH indication.
11. system according to claim 10 is characterized in that,
When notifying its ABS configuration mode of UE by the mode of RRC signaling, the content of RRC signaling is the bitmap of described ABS within a configuration cycle, or predetermined configuration mode call number;
When notifying the initial OFDM character position of its E-PDCCH mapping of UE by the mode of PCFICH indication, described map unit is used for: the OFDM symbolic number that the CFI codeword sequence configuration PDCCH that utilizes LTE R10 agreement to keep takies is 0 indication information.
12. to 11 each described systems, it is characterized in that according to claim 8,
When having sent public information among the described ABS, described map unit is used for: the shared OFDM symbolic number of PCFICH indication PDCCH of utilizing the ABS that has sent public information; This moment, whether all the OFDM sign-on after the shared OFDM symbol area of the PDCCH of PCFICH indication shone upon E-PDCCH no matter by the configuration information of RRC signaling to UE transmission ABS; Or,
When having sent public information among the described ABS, described map unit is used for: the shared OFDM symbolic number of PCFICH indication PDCCH of utilizing the ABS that has sent public information; After having sent the configuration information of ABS by the RRC signaling to UE, E-PDCCH is not that first OFDM of 0 ABS begins mapping from the shared OFDM symbolic number of PCFICH indication PDCCH; In the mapping process, for the ABS that may send public information, shine upon first public information, shine upon again E-PDCCH information, and mapping avoid during E-PDCCH public information interweave through REG and shine upon after shared REG; And, the RE of the E-PDCCH these REG near is carried out rate-matched.
13. system according to claim 12 is characterized in that, described UE is used for: blind check E-PDCCH; In this blind check process, for the ABS that may send public information, first blind check public information after detecting and obtain the REG mapping position, is avoided these positions go forward side by side scanning frequency rate coupling and then the proprietary E-PDCCH of blind check UE.
14. to 11 each described systems, it is characterized in that according to claim 8, described map unit is used for:
The only mapping of the sign-on E-PDCCH after the PDCCH of possible maximum symbolic number, no matter and whether PDCCH has the proprietary DCI of UE;
The corresponding PDSCH of described E-PDCCH has identical OFDM primary sign position with E-PDCCH.
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