CN104066183A

CN104066183A - Method and apparatus for mapping and demodulating channel

Info

Publication number: CN104066183A
Application number: CN201310091514.8A
Authority: CN
Inventors: 马志锋; 张禹强; 崔琪楣; 韩江; 薛飞
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2013-03-21
Filing date: 2013-03-21
Publication date: 2014-09-24
Anticipated expiration: 2033-03-21
Also published as: WO2014146410A1; CN104066183B

Abstract

The invention discloses a method and apparatus for mapping and demodulating a channel. The method comprises: dividing an ePDCCH resource total set of a base station into a plurality of ePDCCH resource subspaces, and determining an ePDCCH region type corresponding to each ePDCCH resource subspace in each cell, the same ePDCCH region type of different cells being corresponding to a different ePDCCH resource subspace; determining a UE category of user equipment (UE); and mapping, according a correspondence between the UE category of the UE and the ePDCCH region type, an ePDCCH of the UE to the ePDCCH resource subspace corresponding the ePDCCH region type in a cell where the UE is located. By means of the technical scheme provided by the invention, the problem in the prior art can be solved that the interference of a controlled region between downlink cells in LTE is serious, the resource cost can be solved, and the system efficiency is improved.

Description

The mapping of channel and demodulation method and device

Technical field

The present invention relates to field of mobile communication, particularly relate to a kind of mapping and demodulation method and device of channel.

Background technology

Based on universal mobile telecommunications system (Universal Mobile Telecommunication System, referred to as UMTS) Long Term Evolution (the Long Term Evolution of technology, referred to as LTE) be the 3rd generation partner program (3rd Generation Partnership Project, referred to as 3GPP) the maximum new technology development project that started in recent years, this technology can be regarded as " accurate 4G technology ".The LTE(LTE-Advanced of evolution, referred to as LTE-A) be the follow-up evolution of LTE, 3GPP has completed the technical need report of LTE-A in 08 year, the minimum essential requirement of LTE-A has been proposed: descending peak rate 1Gbps, up peak rate 500Mbps, up-downgoing peaks spectrum utilance reaches respectively 15Mbps/Hz and 30Mbps/Hz.Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH) in carrying be Downlink Control Information (Downlink Control Information, referred to as DCI), comprise resource distribution and other control information on one or more UE.In general, in a subframe, can there be a plurality of PDCCH.UE needs the DCI in demodulation PDCCH first, then can be on corresponding resource location demodulation belong to the Physical Downlink Shared Channel (PDSCH: comprise the data of broadcast, paging, UE etc.) of UE oneself.Therefore, the normal transmission of PDCCH is the basic demand that communication system runs well.

Now, dispatching requirement for key technologies such as the carrier aggregation in LTE-A, coordinate multipoint sending and receiving, the enhancings of many antennas, ePDCCH(Enhanced PDCCH) in 3GPP LTE-R11 standardization effort, be suggested, in order to increase the capacity of control information, and can support wave beam forming, diversity, the technology such as presence of intercell interference deletion.The PDCCH placement location of prototype version is a front 0-4 OFDM (Orthogonal Frequency Division Multiplexing, referred to as OFDM) symbol, and the form of supporting in view of ePDCCH gets more and more, the position that ePDCCH places will take the Data Position of PDSCH in prototype version.

In order to reach higher system throughput, in LTE, adopting as much as possible the multiplexing factor is 1 networking mode, but can bring presence of intercell interference.LTE is in standardized process, studied the strategy of multiple inter-cell interference cancellation, mode by Inter-Cell Interference Coordination (Inter-Cell Interference Coordination, referred to as ICIC) reduces presence of intercell interference, promotes the throughput of total system.And for PDCCH, owing to not pointing to its more high-level signaling, the UE in LTE system adopts the mode of blind Detecting (Blind Decoding, referred to as BD), can not as PDSCH, adopt the adjustment of minizone dynamic dispatching flexibly, for example, ICIC.Way for PDCCH mapping scheme in LTE is: when mapping, adopt hash function to realize placement location randomization; The UE of or bad channel quality serious for co-channel interference, by increasing the mode of its AL, adopts more CCE resource to transmit PDCCH.

Fig. 1 is the schematic diagram that in prior art, ePDCCH is disturbed by adjacent cell, Fig. 2 is the schematic diagram that in prior art, under different scenes, ePDCCH is disturbed by adjacent cell ePDCCH, as depicted in figs. 1 and 2, in real system, after cell load acquires a certain degree, the consequence that the randomization mapping mode of employing hash function brings is to have sizable probability to make minizone UE produce co-channel interference, and residing position in UE community is not considered in the randomization of hash function placement.Like this, along with the increase of cell load, the PDCCH co-channel interference of minizone different UEs can be more and more serious, and especially for the UE that is in cell edge, performance can worsen more, and the bust this meeting of PDCCH directly has influence on handover and the transfer of data of UE.Adopting the mode of increase UEPDCCHAL can increase resource overhead, especially PDCCH placement location at double be front 0-4 OFDM symbol, increases PDCCH resource overhead and can bring the phenomenon of obstruction to whole system.Therefore, in LTE, the resource mapping of PDCCH does not consider that the interference of minizone suppresses, and only adopts the mode that increases this sacrifice validity of resource overhead to exchange system reliability for.The Data Position of PDSCH in the position of the ePDCCH of LTE R11 proposition placement will take prototype version, Qie YiPRBWei unit places, can bring more complicated situation to ePDCCH from the angle of minizone co-channel interference, but from the angle of ePDCCH resource mapping, operability is stronger.

Summary of the invention

The invention provides a kind of mapping and demodulation method and device of channel, to solve the control area, descending minizone that in prior art, LTE exists, disturb comparatively serious problem.

The invention provides a kind of method for mapping resource that strengthens Physical Downlink Control Channel ePDCCH, comprise: base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and definite each ePDCCH resource subspace ePDCCH area type corresponding in each community, wherein the ePDCCH resource subspace corresponding to same ePDCCH area type of different districts; Determine the UE classification of user equipment (UE); According to the corresponding relation between the UE classification of UE and ePDCCH area type, the ePDCCH of UE is mapped to corresponding ePDCCH area type in ePDCCH resource subspace corresponding to this community, UE place.

Preferably, base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and determine that each ePDCCH resource subspace specifically comprises at ePDCCH area type corresponding to each community: base station to its compass of competency in the cell ID ID of community adopt and differ from one another and after continuous positive integer is numbered, community carries out N delivery to process to the community ID of self, according to the mapping table of the result setting in advance and ePDCCH resource mapping type, determine the ePDCCH resource mapping type of community, the ePDCCH region of Bing Jiang community self is divided into N class, wherein, N is the type number that the ePDCCH region of community is divided, base station is numbered the ePDCCH region, base station in its compass of competency, obtain base station ePDCCH resource total collection, and base station ePDCCH resource total collection is divided into N ePDCCH resource subspace, according to the ePDCCH resource mapping type of community, N ePDCCH resource subspace distributed to respectively to the N class ePDCCH region of community, the UE classification of determining UE specifically comprises: the UE classification of determining UE according to the channel quality of UE and/or disturbed condition.

Preferably, according to the corresponding relation between the UE classification of UE and ePDCCH area type, the ePDCCH of UE is mapped to corresponding ePDCCH area type specifically to be comprised in ePDCCH resource subspace corresponding to this community, UE place: the AL that determines its ePDCCH according to the channel quality of UE, and according to the mapping table of UE classification and network temporary code, for UE distributes corresponding network temporary code; According to UE classification, determine that UE carries out the ePDCCH area type of ePDCCH mapping in its community of living in; According to ePDCCH area type, determine that UE carries out the ePDCCH resource subspace of ePDCCH mapping in its community of living in, and inner in this ePDCCH resource subspace, according to the AL of UE and network temporary code, use hash function to carry out ePDCCH mapping; The network temporary code of UE is sent to UE.

Preferably, base station is numbered the ePDCCH region, base station in its compass of competency, obtain base station ePDCCH resource total collection, and base station ePDCCH resource total collection is divided into N ePDCCH resource subspace specifically comprises: Physical Resource Block be take as unit in base station, ePDCCH region, base station is numbered, obtain base station ePDCCH resource total collection, and base station ePDCCH resource total collection is divided into N ePDCCH resource subspace, wherein, the transmitted power that different e PDCCH resource subspace adopts is different.

Preferably, the ePDCCH area type of community self comprises: UE region and cell edge UE region in the middle of center of housing estate UE region, community.

Preferably, UE classification comprises: UE and center of housing estate UE in the middle of cell edge UE, community.

Preferably, after the ePDCCH of different classes of UE being mapped in the ePDCCH resource subspace of respective classes, method also comprises: every the scheduled time, detect channel quality and/or the disturbed condition of a UE, and judge whether current UE classification variation has occurred; If variation has occurred UE classification, and still have available resources in inside, the ePDCCH of this UE classification resource subspace, again the ePDCCH of this UE is mapped in corresponding ePDCCH resource subspace.

Preferably, if variation has occurred UE classification, and there is no available resources in inside, the ePDCCH of this UE classification resource subspace, kept original ePDCCH resource mapping relation.

The present invention also provides the method for mapping resource of a kind of Physical Downlink Shared Channel PDSCH, comprising: mutual ePDCCH resource mapping information between base station, and the ePDCCH resource subspace that neighbor cell is taken carries out mark, obtains label information; When the PDSCH resource of Dui Zhe community, current area UE is dispatched, according to label information, the dispatching priority of PDSCH resource is adjusted; According to dispatching priority, dispatch corresponding PDSCH resource and carry out PDSCH resource mapping.

Preferably, label information comprise following one of at least: neighbor cell ePDCCH takies the ePDCCH area type of certain PDSCH resource, UE classification and the occupied number of times that neighbor cell ePDCCH takies certain PDSCH resource.

Preferably, when the PDSCH resource of Dui Zhe community, current area UE is dispatched, according to label information, the dispatching priority of PDSCH resource is adjusted specifically and comprised: reduce the dispatching priority that is labeled as the PDSCH resource being taken by neighbor cell ePDCCH, wherein, to ePDCCH region, neighbor cell, disturb the dispatching priority of less PDSCH resource higher than ePDCCH region, neighbor cell being disturbed to the dispatching priority of larger PDSCH resource; Reduction is taken the dispatching priority of PDSCH resource often by neighbor cell ePDCCH; Improve the unmarked dispatching priority for the PDSCH resource that taken by neighbor cell ePDCCH.

Preferably, according to dispatching priority, dispatching corresponding PDSCH resource carries out PDSCH resource mapping and specifically comprises: preferentially call the unmarked PDSCH resource for being taken by neighbor cell ePDCCH; After having dispatched the PDSCH resource not being labeled, preferentially call less PDSCH resource is disturbed in ePDCCH region, neighbor cell.

Preferably, ePDCCH area type comprises: UE region and cell edge UE region in the middle of center of housing estate UE region, community; UE classification is: UE and center of housing estate UE in the middle of cell edge UE, community.

Preferably, preferentially call and disturb less PDSCH resource specifically to comprise to ePDCCH region, neighbor cell: first call the PDSCH resource being taken by the center of housing estate UE region of neighbor cell, after the PDSCH resource transfer being taken by center of housing estate UE region is complete, call again the PDSCH resource by UE region takies in the middle of the community of neighbor cell, after UE region takies in the middle of Bei community PDSCH resource transfer is complete, then call the PDSCH resource being taken by the cell edge UE region of neighbor cell; Or, first call the PDSCH resource being taken by the center of housing estate UE of neighbor cell, after the PDSCH resource transfer being taken by center of housing estate UE is complete, call again the PDSCH resource being taken by UE in the middle of the community of neighbor cell, after UE takies in the middle of Bei community PDSCH resource transfer is complete, then call the PDSCH resource being taken by the cell edge UE of neighbor cell.

The present invention also provides a kind of resource demodulation method that strengthens Physical Downlink Control Channel ePDCCH, comprising: user equipment (UE) obtains the network temporary code that base station sends, and obtains the cell ID ID of current community of living in; Obtain the ePDCCH resource mapping type of current community of living in, and the UE classification under obtaining according to the mapping table of network temporary code and UE classification and network temporary code, wherein, the type number that the ePDCCH region that N is community is divided; According to the ePDCCH resource mapping type of current community of living in and UE classification, determine the scope of the residing ePDCCH resource of UE subspace, and in scope, adopt the mode of blind Detecting to carry out the resource demodulation of ePDCCH.

Preferably, the ePDCCH resource mapping type of obtaining current community of living in specifically comprises: community ID is carried out to the operation to N delivery, obtain the ePDCCH resource mapping type of current community of living according to operating result.

Preferably, in scope, the resource demodulation that the mode of employing blind Detecting is carried out ePDCCH specifically comprises: hash function and network temporary code during according to mapping, and exhaustive all possible AL, and all possible AL is carried out to cyclic redundancy CRC check.

The present invention also provides a kind of resource mapping apparatus that strengthens Physical Downlink Control Channel ePDCCH, comprise: divide module, for base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and definite each ePDCCH resource subspace ePDCCH area type corresponding in each community, wherein the ePDCCH resource subspace corresponding to same ePDCCH area type of different districts; Determination module, for determining the UE classification of user equipment (UE); Mapping block, for according to the corresponding relation between the UE classification of UE and ePDCCH area type, is mapped to corresponding ePDCCH area type in ePDCCH resource subspace corresponding to this community, UE place by the ePDCCH of UE.

Preferably, divide module specifically for: base station to its compass of competency in the cell ID ID of community adopt and differ from one another and after continuous positive integer is numbered, community carries out N delivery to process to the community ID of self, according to the mapping table of the result setting in advance and ePDCCH resource mapping type, determine the ePDCCH resource mapping type of community, the ePDCCH region of Bing Jiang community self is divided into N class, wherein, the type number that the ePDCCH region that N is community is divided; Base station is numbered the ePDCCH region, base station in its compass of competency, obtain base station ePDCCH resource total collection, and base station ePDCCH resource total collection is divided into N ePDCCH resource subspace, according to the ePDCCH resource mapping type of community, N ePDCCH resource subspace distributed to respectively to the N class ePDCCH region of community; Determination module is specifically for the UE classification of determining UE according to the channel quality of UE and/or disturbed condition.

Preferably, mapping block specifically for: according to the channel quality of UE, determine the degree of polymerization of its ePDCCH, and according to the mapping table of UE classification and network temporary code, for UE distributes corresponding network temporary code; According to UE classification, determine that UE carries out the ePDCCH area type of ePDCCH mapping in its community of living in; According to ePDCCH area type, determine that UE carries out the ePDCCH resource subspace of ePDCCH mapping in its community of living in, and inner in this ePDCCH resource subspace, according to the degree of polymerization of UE and network temporary code, use hash function to carry out ePDCCH mapping; The network temporary code of UE is sent to UE.

Preferably, device also comprises: detection module, for detect channel quality and/or the disturbed condition of a UE every the scheduled time, and judges whether current UE classification variation has occurred; If variation has occurred UE classification, and determine in inside, the ePDCCH of this UE classification resource subspace and still have available resources, notify mapping block again the ePDCCH of this UE to be mapped in corresponding ePDCCH resource subspace; If variation has occurred UE classification, and there is no available resources in inside, the ePDCCH of this UE classification resource subspace, kept original ePDCCH resource mapping relation.

The present invention also provides the resource mapping apparatus of a kind of Physical Downlink Shared Channel PDSCH, comprise: detection module, for mutual ePDCCH resource mapping information between base station, and the ePDCCH resource subspace that neighbor cell is taken carries out mark, obtains label information; Adjusting module, while dispatching for the PDSCH resource of Dui Zhe community, current area UE, adjusts the dispatching priority of PDSCH resource according to label information; Resource mapping module, carries out PDSCH resource mapping for dispatch corresponding PDSCH resource according to dispatching priority.

Preferably, adjusting module specifically for: reduce the dispatching priority be labeled as the PDSCH resource being taken by neighbor cell ePDCCH, wherein, to ePDCCH region, neighbor cell, disturb the dispatching priority of less PDSCH resource higher than ePDCCH region, neighbor cell being disturbed to the dispatching priority of larger PDSCH resource; Reduction is taken the dispatching priority of PDSCH resource often by neighbor cell ePDCCH; Improve the unmarked dispatching priority for the PDSCH resource that taken by neighbor cell ePDCCH.

Preferably, resource mapping module specifically for: preferentially calling unmarked is the PDSCH resource that taken by neighbor cell ePDCCH; After having dispatched the PDSCH resource not being labeled, preferentially call less PDSCH resource is disturbed in ePDCCH region, neighbor cell.

Preferably, resource mapping module specifically for: first call the PDSCH resource being taken by the center of housing estate UE region of neighbor cell, after the PDSCH resource transfer being taken by center of housing estate UE region is complete, call again the PDSCH resource by UE region takies in the middle of the community of neighbor cell, after UE region takies in the middle of Bei community PDSCH resource transfer is complete, then call the PDSCH resource being taken by the cell edge UE region of neighbor cell; Or, first call the PDSCH resource being taken by the center of housing estate UE of neighbor cell, after the PDSCH resource transfer being taken by center of housing estate UE is complete, call again the PDSCH resource being taken by UE in the middle of the community of neighbor cell, after UE takies in the middle of Bei community PDSCH resource transfer is complete, then call the PDSCH resource being taken by the cell edge UE of neighbor cell.

The present invention also provides a kind of resource demodulating equipment that strengthens Physical Downlink Control Channel ePDCCH, comprising: the first acquisition module, and the network temporary code sending for obtaining base station, and obtain the community ID of current community of living in; The second acquisition module, for obtaining the ePDCCH resource mapping type of current community of living in, and the UE classification under obtaining according to the mapping table of network temporary code and UE classification and network temporary code, wherein, the type number that the ePDCCH region that N is community is divided; Resource demodulation module, for according to the ePDCCH resource mapping type of current community of living in and UE classification, determines the scope of the residing ePDCCH resource of UE subspace, and in scope, adopts the mode of blind Detecting to carry out the resource demodulation of ePDCCH.

Preferably, the second acquisition module specifically for: community ID is carried out to the operation to N delivery, according to operating result, obtains the ePDCCH resource mapping type of current community of living in.

Preferably, resource demodulation module specifically for: according to hash function and the network temporary code in when mapping, the exhaustive all possible degree of polymerization, and all possible degree of polymerization is carried out to cyclic redundancy CRC check.

Beneficial effect of the present invention is as follows:

In the method for the resource mapping of the ePDCCH of the embodiment of the present invention, by ePDCCH search volume is decomposed into some classes, and adopt different placement patterns for different districts identification code Cell-ID, avoided neighboring user between different districts to adopt same running time-frequency resource to carry out ePDCCH mapping, and then reduced the co-channel interference phenomenon of ePDCCH between community, saved the resource of ePDCCH mapping area, improve the reliability of ePDCCH transmission, improved the data throughput of total system.By being divided into some classes according to the communication quality of user UE, and adopt the value of the different interim identification code RNTI of network to distinguish different user UE types, avoided extra signaling consumption, saved resource.The technical scheme of the embodiment of the present invention has solved the descending minizone control area that in prior art, LTE exists and has disturbed comparatively serious problem, can saving resource expense, improve system effectiveness.

In the method for mapping resource of the PDSCH of the embodiment of the present invention, by the information interaction between community, reduce the dispatching priority that this community and peripheral cell ePDCCH adopt the PDSCH Resource Block that repeats resource.Reduced the probability of the co-channel interference between distinctive PDSCH and ePDCCH in ePDCCH.

In the resource demodulation method of the ePDCCH of the embodiment of the present invention, by the interim identification code RNTI value of network of user UE, inform the residing ePDCCH search of user UE subregion type, in subregion, carry out again blind Detecting, thereby reduced the complexity of its blind Detecting.

Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by the specific embodiment of the present invention.

Accompanying drawing explanation

By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skills.Accompanying drawing is only for the object of preferred implementation is shown, and do not think limitation of the present invention.And in whole accompanying drawing, by identical reference symbol, represent identical parts.In the accompanying drawings:

Fig. 1 is the schematic diagram that in prior art, ePDCCH is disturbed by adjacent cell;

Fig. 2 is the schematic diagram that in prior art, under different scenes, ePDCCH is disturbed by adjacent cell ePDCCH;

Fig. 3 is the flow chart of method for mapping resource of the ePDCCH of the embodiment of the present invention;

Fig. 4 is the schematic diagram of the different districts ePDCCH resource mapping type of the embodiment of the present invention;

Fig. 5 is the schematic diagram that the ePDCCH resource subspace of the embodiment of the present invention is divided;

Fig. 6 is the flow chart of resource demodulation method of the ePDCCH of the embodiment of the present invention;

Fig. 7 is the flow chart of method for mapping resource of the PDSCH of the embodiment of the present invention;

Fig. 8 is the structural representation of resource mapping apparatus of the ePDCCH of the embodiment of the present invention;

Fig. 9 is the structural representation of resource mapping apparatus of the PDSCH of the embodiment of the present invention;

Figure 10 is the structural representation of resource demodulating equipment of the ePDCCH of the embodiment of the present invention.

Embodiment

Exemplary embodiment of the present disclosure is described below with reference to accompanying drawings in more detail.Although shown exemplary embodiment of the present disclosure in accompanying drawing, yet should be appreciated that and can realize the disclosure and the embodiment that should do not set forth limits here with various forms.On the contrary, it is in order more thoroughly to understand the disclosure that these embodiment are provided, and can by the scope of the present disclosure complete convey to those skilled in the art.

In order to solve the control area, descending minizone that in prior art, LTE exists, disturb comparatively serious problem, the invention provides a kind of mapping and demodulation method and device of channel, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, does not limit the present invention.

Embodiment of the method one

According to embodiments of the invention, the method for mapping resource of a kind of ePDCCH is provided, Fig. 3 is the flow chart of method for mapping resource of the ePDCCH of the embodiment of the present invention, as shown in Figure 3, according to the method for mapping resource of the ePDCCH of the embodiment of the present invention, comprises following processing:

Step 301, base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and definite each ePDCCH resource subspace ePDCCH area type corresponding in each community, wherein the ePDCCH resource subspace corresponding to same ePDCCH area type of different districts;

In step 301, base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and determines that corresponding ePDCCH area type specifically comprises following processing in each community in each ePDCCH resource subspace:

1, base station to its compass of competency in the cell ID (Cell-ID) of community adopt and to differ from one another and after continuous positive integer is numbered, community carries out N delivery to process to the Cell-ID of self, according to the mapping table of the result setting in advance and ePDCCH resource mapping type, determine the ePDCCH resource mapping type of community, the ePDCCH region of Bing Jiang community self is divided into N class, wherein, the type number that the ePDCCH region that N is community is divided; Preferably, the ePDCCH area type of community self comprises: UE region and cell edge UE region in the middle of center of housing estate UE region, community.

2, base station is numbered the ePDCCH region, base station in its compass of competency, obtain base station ePDCCH resource total collection, and base station ePDCCH resource total collection is divided into N ePDCCH resource subspace, according to the ePDCCH resource mapping type of community, N ePDCCH resource subspace distributed to respectively to the N class ePDCCH region of community;

Wherein, base station is numbered the ePDCCH region, base station in its compass of competency, obtains base station ePDCCH resource total collection, and base station ePDCCH resource total collection is divided into N ePDCCH resource subspace specifically comprises:

Physical Resource Block be take as unit in base station, ePDCCH region, base station is numbered, obtains base station ePDCCH resource total collection, and base station ePDCCH resource total collection is divided into N ePDCCH resource subspace, wherein, the transmitted power that different e PDCCH resource subspace adopts is different.

That is to say, in step 301, adopt to differ from one another and continuous positive integer is numbered between community, community takes N delivery to process to the Cell-ID of self, and N is positive integer.Fig. 4 is the schematic diagram of the different districts ePDCCH resource mapping type of the embodiment of the present invention, Fig. 5 is the schematic diagram that the ePDCCH resource subspace of the embodiment of the present invention is divided, as shown in Figure 4,5, the ePDCCH resource mapping type of oneself is judged in community according to result, the ePDCCH region of self is divided into UE region, center (Near-by Users Area), middle UE region (Middle Users Area), UE region, edge (Cell-edge Users Area) ... etc. some classes, dividing mode is the decile in whole ePDCCH region.Table 1 shows the mapping mode of the different districts map type of the embodiment of the present invention.

Table 1

Cell_ID mod3	0	1	2
				EPDCCH map type	Type-0	Type-1	Type-2

As shown in table 1, when N=3, for the division of Near-by Users Area, Middle Users Area, Cell-edge Users Area tri-class mapping area, be the decile in ePDCCH region, whole base station.YiPRBWei unit is numbered and obtains the general collection of ePDCCH resource and be combined into ePDCCH region, base station: RESOURCE_ePDCCH={PRB_1, PRB_2 ... PRB_n}.RESOURCE_ePDCCH is divided into three subsets as follows: RESOURCE_1={PRB_1, f_round (PRB_n/3) }, RESOURCE_2={f_round (PRB_n/3)+1, f_round (PRB_n*2/3) }, RESOURCE_3={f_round (PRB_n*2/3)+1,, PRB_n}.Wherein, f_round (●) function rounds operation under being.

For community corresponding to Type-0, Near-by Users, Middle Users, the resource of Cell-edge Users tri-class mapping area is assigned as: RESOURCE_Near-by=RESOURCE_1, RESOURCE_Middle=RESOURCE_2, RESOURCE_Cell-edge=RESOURCE_3.

For community corresponding to Type-1, Near-by Users, Middle Users, the resource of Cell-edge Users tri-class mapping area is assigned as: RESOURCE_Near-by=RESOURCE_2, RESOURCE_Middle=RESOURCE_3, RESOURCE_Cell-edge=RESOURCE_1.

For community corresponding to Type-2, Near-by Users, Middle Users, the resource of Cell-edge Users tri-class mapping area is assigned as: RESOURCE_Near-by=RESOURCE_3, RESOURCE_Middle=RESOURCE_1, RESOURCE_Cell-edge=RESOURCE_2.

Step 302, determines the UE classification of UE.Particularly, in step 302, can determine according to the channel quality of UE and/or disturbed condition the UE classification of UE.Wherein, UE classification comprises: UE and center of housing estate UE in the middle of cell edge UE, community.

Step 303, according to the corresponding relation between the UE classification of UE and ePDCCH area type, is mapped to corresponding ePDCCH area type in ePDCCH resource subspace corresponding to this community, UE place by the ePDCCH of UE.

Step 303 specifically comprises following processing:

1, according to the channel quality of UE, determine the degree of polymerization of its ePDCCH, and according to the mapping table of UE classification and network temporary code (RNTI), for UE distributes corresponding network temporary code;

2, according to UE classification, determine that UE carries out the ePDCCH area type of ePDCCH mapping in its community of living in;

3, according to ePDCCH area type, determine that UE carries out the ePDCCH resource subspace of ePDCCH mapping in its community of living in, and inner in this ePDCCH resource subspace, according to the degree of polymerization of UE and RNTI, use hash function to carry out ePDCCH mapping;

4, the network temporary code of UE is sent to UE.

That is to say, in step 303, base station judges according to the channel quality of different UEs and disturbed condition, according to the channel quality of UE, UE is divided into some N classes: cell edge UE, UE in the middle of community, center of housing estate UE ... Deng.And according to the channel quality of UE, determine the degree of polymerization (Aggregation Level, referred to as AL) of its ePDCCH.Table 2 is the table of comparisons of RNTI scope and the UE classification of UE.

Table 2

UE classification	Cell edge UE	UE in the middle of community	Center of housing estate UE
				RNTI scope	1-20	21-40	41-60

As shown in table 2, according to the classification of UE, give accordingly its different network temporary code scope.Base station is according to the ePDCCH resource subspace of selected its ePDCCH mapping of classification of UE, inner in ePDCCH resource subspace, and base station, according to concrete RNTI and the AL of UE, is used hash function to determine the position of placement that its ePDCCH shines upon.Finally, BS notifies its RNTI to UE.

In embodiments of the present invention, after the ePDCCH of different classes of UE being mapped in the ePDCCH resource subspace of respective classes, can also be handled as follows:

Every the scheduled time, detect channel quality and/or the disturbed condition of a UE, and judge whether current UE classification variation has occurred; If variation has occurred UE classification, and still have available resources in inside, the ePDCCH of this UE classification resource subspace, again the ePDCCH of this UE is mapped in corresponding ePDCCH resource subspace.If variation has occurred UE classification, and there is no available resources in inside, the ePDCCH of this UE classification resource subspace, kept original ePDCCH resource mapping relation.

That is to say, channel quality and the disturbed condition of a UE of judgement are detected in base station every a period of time, and judge the classification of UE: cell edge UE, UE in the middle of community, center of housing estate UE ... Deng.If replacing has occurred the classification of UE, and still there are available resources at such other ePDCCH intra-zone, during N=3, as shown in table 2, redistribute the RNTI to this UE.And according to the channel quality of UE, determine the AL of its ePDCCH.Base station is according to the ePDCCH resource subspace of selected its ePDCCH mapping of classification of UE, inner in ePDCCH resource subspace, and base station, according to concrete RNTI and the AL of UE, is used hash function to determine the position that its ePDCCH shines upon.Finally, its RNTI to UE is notified in base station.

To sum up, it is Near-by UsersArea by the ePDCCH Region Decomposition of community that the embodiment of the present invention adopts, Middle Users Area, Cell-edge Users Area ... mode etc. some classes, and the in the situation that of various ce ll-ID, adopt different resource mapping types, avoided adjacent UE between different districts to adopt same running time-frequency resource to carry out ePDCCH mapping, and then reduced the co-channel interference phenomenon of ePDCCH between community, saved the resource in ePDCCH region, improved the reliability of ePDCCH transmission, and then improved the data throughput of total system.According to the communication quality of UE, be divided into cell edge UE, UE in the middle of community, center of housing estate UE ... etc. some classes.And adopt different RNTI to distinguish different UE types, and avoided extra signaling consumption, saved resource.The method for mapping resource of this ePDCCH, with the method for the approximate random mapping adopting in original LTE, is avoiding aspect presence of intercell interference, having internal difference.

Embodiment of the method two

According to embodiments of the invention, the resource demodulation method of a kind of ePDCCH is provided, Fig. 6 is the flow chart of resource demodulation method of the ePDCCH of the embodiment of the present invention, as shown in Figure 6, after having carried out processing as shown in Figure 3, according to the resource demodulation method of the ePDCCH of the embodiment of the present invention, comprise following processing:

Step 601, UE obtains the network temporary code that base station sends, and obtains the Cell-ID of current community of living in;

Step 602, obtains the ePDCCH resource mapping type of current community of living in, and the UE classification under obtaining according to the mapping table of network temporary code and UE classification and network temporary code, wherein, and the type number that the ePDCCH region that N is community is divided;

In step 602, the ePDCCH resource mapping type of obtaining current community of living in specifically comprises: community ID is carried out to the operation to N delivery, obtain the ePDCCH resource mapping type of current community of living according to operating result.

Step 603, according to the ePDCCH resource mapping type of current community of living in and UE classification, determine the scope of the residing ePDCCH resource of UE subspace, and in scope, adopt the mode of blind Detecting (BlindDecoding, referred to as BD) to carry out the resource demodulation of ePDCCH.

In step 603, in scope, the resource demodulation that the mode of employing blind Detecting is carried out ePDCCH specifically comprises: hash function and RNTI during according to mapping, and exhaustive all possible AL, and all possible AL is carried out to CRC check.

That is to say, UE receives base station assigns and gives its RNTI and the Cell-ID of base station, and UE is according to the Cell-ID of access base station, and Cell-ID is carried out to the modulo operation to N.For example, during N=3, adopt shown in table 1 to 3 modulo operation, obtain the classification of the resource mapping of front access community, be Type-0, Type-1, a kind of in Type-2.UE is according to self RNTI and table 2, determines own classification, i.e. cell edge UE, centre, community UE, center of housing estate UE ... a kind of etc. in several classification.UE, according to the resource mapping type of current area and self classification, determines oneself residing ePDCCH resource subspace in ePDCCH region, in the residing ePDCCH resource of UE self subspace, adopts the mode of BD to decode.According to the hash function of mapping and self RNTI, exhaustive all possible AL, and carry out CRC, if verification is by successfully decoded.

Below in conjunction with example, the technique scheme of the embodiment of the present invention is elaborated.

Example 1, ePDCCH base station maps and UE demodulating process, wherein, and Type-1, N=3, i.e. 3 kinds of patterns:

Step 1, between community, adopt and differ from one another and continuous positive integer is numbered, community takes 3 deliverys to process to the Cell-ID of self, according to result, judge the ePDCCH resource mapping type of oneself, the ePDCCH region of self is divided into Near-by Users Area, Middle Users Area, Cell-edgeUsers Area tri-classes, and concrete ePDCCH resource mapping position is as shown in table 1 and Fig. 4.In this example, the Cell-ID of community A is 25, and its corresponding ePDCCH resource mapping type is: 25mod3=1, the Type-1 in corresponding diagram 4.

Base station first YiPRBWei unit is numbered ePDCCH region, base station, obtains the general collection of ePDCCH resource and is combined into: RESOURCE_ePDCCH={PRB_1, PRB_2 ... PRB_99}.RESOURCE_ePDCCH is divided into three subsets as follows: RESOURCE_1={PRB_1 ..., PRB_33}, RESOURCE_2={PRB_34 ..., PRB_66}, RESOURCE_3={PRB_67 ..., PRB_99}.

Because cell type is Type-1, the resource of Near-by Users, Middle Users, Cell-edge Users tri-class mapping area is assigned as: RESOURCE_Near-by=RESOURCE_2, RESOURCE_Middle=RESOURCE_3, RESOURCE_Cell-edge=RESOURCE_1.

Step 2, base station judges according to the channel quality of different UEs and disturbed condition, according to the channel quality of UE, UE is divided three classes: UE, center of housing estate UE in the middle of cell edge UE, community.And according to the channel quality of UE, determine the AL of its ePDCCH.In the present embodiment, according to A community, UE(is follow-up referred to as UE-A) channel quality and disturbed condition, incorporated into as cell edge UE, and determined that the CCE AL of its ePDCCH is 8.It should be noted that, for the judgement of type under UE, be the technology that belongs to comparatively ripe in the current communication technology, do not repeat them here.

Step 3, as shown in table 2, according to the classification of UE, give accordingly its different RNTI.In this example, UE-A is cell edge UE, and according to its classification, distributing to its RNTI is 10.

Step 4, base station is according to the ePDCCH resource subspace of selected its ePDCCH mapping of classification of UE, inner in ePDCCH resource subspace, and base station, according to concrete RNTI and AL with UE, is used hash function to determine the position that its ePDCCH shines upon.In this example, community A carries out ePDCCH mapping to UE-A in Cell-edge Users Area region, during mapping according to the RNTI=10 of UE-A, AL=8, substitution hash function carries out Random Maps.

Step 5, its RNTI=10 of community A notice UE-A.In this value, comprised UE-A residing positional information in community, UE-A can make further judgement according to it and process.

Step 6, UE-A receives community A and distributes to its RNTI=10 and the Cell-ID=25 of community A.

Step 7, UE-A is according to the Cell-ID=25 of the community A of access base station, adopt shown in table 1 to 3 modulo operation, obtain the cell categories of present access subzone, be a kind of in Type-0, Type-1, Type-2.In this example, the Cell-ID of community A is 25, and its corresponding ePDCCH resource mapping type is: 25mod3=1, the Type-1 in corresponding diagram 4.The resource that is Near-by Users, Middle Users, Cell-edge Users tri-class mapping area is assigned as: RESOURCE_Near-by=RESOURCE_2, RESOURCE_Middle=RESOURCE_3, RESOURCE_Cell-edge=RESOURCE_1.

Step 8, UE-A is according to self RNTI and table 2, determines own UE classification, i.e. cell edge UE, centre, community UE, a kind of in center of housing estate UE.In this example, the RNTI=10 of UE-A, according to table 2, judges that self UE classification is cell edge UE.

Step 9, UE, according to the classification of current area and self UE classification, determines oneself residing ePDCCH resource subspace in ePDCCH region.In the present embodiment, UE-A is Type-1 according to the type of community A, and the RNTI=10 of self, judges that self ePDCCH resource subspace is the Cell-edge Users Area of Type-1 in Fig. 4.Be that ePDCCH resource subspace is: RESOURCE_Cell-edge=RESOURCE_1={PRB_1 ..., PRB_33}.

Step 10, in the residing ePDCCH resource of UE self subspace, adopts the mode of BD to decode.According to the hash function of mapping and self RNTI, exhaustive all possible AL, and carry out CRC, if verification is by successfully decoded.In the present embodiment, UE-A will be according to hash function and self RNTI=10, exhaustive all possible AL={1, and 2,4,8}, carries out CRC to all feasible solutions.

Example 2, ePDCCH base station maps and UE demodulating process, wherein, Type-2, i.e. 2 kinds of patterns:

Step 1, between community, adopt and differ from one another and continuous positive integer is numbered, community takes 2 deliverys to process to the Cell-ID of self, the ePDCCH resource mapping type of judging oneself according to result, is divided into Near-by Users Area, Cell-edge Users Area two classes by the ePDCCH region of self.In this example, the Cell-ID of community A is 26, and according to table 3, its corresponding ePDCCH resource mapping type is: 26mod2=0, corresponding Type-0.

Table 3

Cell_ID mod2	0	1
			EPDCCH map type	Type-0	Type-1

Base station first YiPRBWei unit is numbered ePDCCH region, base station, obtains the general collection of ePDCCH resource and is combined into: RESOURCE_ePDCCH={PRB_1, PRB_2 ... PRB_98}.RESOURCE_ePDCCH is divided into two subsets as follows: RESOURCE_1={PRB_1 ..., PRB_49}, RESOURCE_2={PRB_50 ..., PRB_98}.

, because base station type is Type-0, the resource of Near-by Users, Cell-edge Users two class mapping area is assigned as: RESOURCE_Near-by=RESOURCE_1, RESOURCE_Cell-edge=RESOURCE_2.

Step 2, base station judges according to the channel quality of different UEs and disturbed condition, according to the channel quality of UE, UE is divided into two classes: cell edge UE, center of housing estate UE.And according to the channel quality of UE, determine the AL of its ePDCCH.In this example, according to the channel quality of UE-A and disturbed condition, incorporated into as cell edge UE, and determined that the CCE AL of its ePDCCH is 8.

Step 3, as shown in table 4, according to the UE classification of UE, give accordingly its different RNTI.In the present embodiment, UE-A is cell edge UE, and according to table 4, distributing to its RNTI is 15.

Table 4

UE classification	Cell edge UE	Center of housing estate UE
			RNTI scope	1-30	31-60

Step 4, base station is according to the ePDCCH resource subspace of selected its ePDCCH mapping of UE classification of UE, inner in ePDCCH resource subspace, and base station, according to concrete RNTI and the AL of UE, is used hash function to determine the position that its ePDCCH shines upon.In the present embodiment, community A carries out ePDCCH mapping to UE-A in Cell-edgeUsers Area region, during mapping according to the RNTI=15 of UE-A, AL=8, substitution hash function carries out Random Maps.

Step 5, community A notifies its RNTI=15 to UE-A.In this value, comprised UE-A residing positional information in community, UE-A can make further judgement according to it and process.

Step 6, UE-A receives community A and distributes to its RNTI=15 and the Cell-ID=26 of community A.

Step 7, UE-A is according to the Cell-ID=26 of the community A of access base station, according to table 3, adopts 2 modulo operation, obtains the cell categories of present access subzone, is Type-0, a kind of in Type-1.In this example, the Cell-ID of community A is 26, and its corresponding ePDCCH resource mapping type is: 26mod2=0, corresponds to Type-0.

Step 8, UE-A, according to the numerical value of self RNTI, according to table 4, determines the UE classification of oneself, i.e. cell edge UE, a kind of in center of housing estate UE.In this example, the RNTI=15 of UE-A, according to table 4, judges that self classification is cell edge UE.

Step 9, UE, according to the classification of current area and self UE classification, determines oneself residing ePDCCH resource subspace in ePDCCH region.In the present embodiment, UE-A is Type-0 according to the type of community A, and the RNTI=15 of self, the Cell-edge Users Area that the ePDCCH resource subspace that judges self is Type-0.

Step 10, in the residing ePDCCH resource of UE self subspace, adopts the mode of BD to decode.According to the hash function of mapping and self RNTI, exhaustive all possible AL, and carry out CRC, if verification is by successfully decoded.In the present embodiment, UE-A will be according to hash function and self RNTI=15, exhaustive all possible AL={1, and 2,4,8}, carries out CRC to all feasible solutions.

Example 3, UE moves between the sub-search volume of ePDCCH, wherein, N=3:

Step 1, between community, adopt and differ from one another and continuous positive integer is numbered, community takes 3 deliverys to process to the Cell-ID of self, according to result, judge the ePDCCH resource mapping type of oneself, the ePDCCH region of self is divided into Near-by Users Area, Middle Users Area, Cell-edgeUsers Area tri-classes, and concrete ePDCCH resource mapping position is as shown in table 1 and Fig. 4.In the present embodiment, the Cell-ID of community A is 25, and its corresponding ePDCCH resource mapping type is: 25mod3=1, the Type-1 in corresponding diagram 4.

Step 2, base station judges according to the channel quality of different UEs and disturbed condition, according to the channel quality of UE, UE is divided three classes: cell edge UE, UE in the middle of community, center of housing estate UE.And according to the channel quality of UE, determine the AL of its ePDCCH.In this example, according to the channel quality of UE-A and disturbed condition, incorporated into as cell edge UE, and determined that the CCE AL of its ePDCCH is 8.

Step 3, as shown in table 2, according to the UE classification of UE, give accordingly its different RNTI.In this example, UE-A is cell edge UE, and according to its classification, distributing to its RNTI value is 10.

Step 4, base station is according to the ePDCCH resource subspace of selected its ePDCCH mapping of UE classification of UE, inner in ePDCCH resource subspace, and base station, according to concrete RNTI and the AL of UE, is used hash function to determine the position of placement that its ePDCCH shines upon.In this example, community A carries out ePDCCH mapping to UE-A in Cell-edgeUsers Area region, during mapping according to the RNTI=10 of UE-A, AL=8, substitution hash function carries out Random Maps.

Step 5, community A notifies its RNTI=10 to UE-A.In this value, comprised UE-A residing positional information in community, UE-A can make further judgement according to it and process.

Step 6, UE-A receives community A and distributes to its RNTI=10 and the community Cell-ID=25 of community A.

Step 7, UE-A is according to the Cell-ID=25 of the community A of access base station, adopt shown in table 1 to 3 modulo operation, obtain the cell categories of present access subzone, be Type-0, Type-1, a kind of in Type-2.In the present embodiment, the Cell-ID of community A is 25, and its corresponding ePDCCH resource mapping type is: 25mod3=1, the Type-1 in corresponding diagram 4.

Step 8, UE-A, according to the numerical value of self RNTI, according to table 2, determines own classification, i.e. cell edge UE, centre, community UE, a kind of in center of housing estate UE.In the present embodiment, the RNTI=10 of UE-A, according to table 2, judges that self classification is cell edge UE.

Step 9, UE, according to the cell categories of current area and self UE classification, determines oneself residing ePDCCH resource subspace in ePDCCH region.In this example, UE-A is Type-1 according to the type of community A, and the RNTI=10 of self, judges that self ePDCCH resource subspace is the Cell-edge Users Area of Type-1 in Fig. 4.

Step 11, channel quality and the disturbed condition of a UE of judgement are detected in base station every a period of time, and again judge the classification of UE: cell edge UE, UE in the middle of community, center of housing estate UE.If replacing has occurred the UE classification of UE, and still there are available resources in such other inside, ePDCCH resource subspace, as shown in table 2, redistribute the new RNTI to this UE.And according to the channel quality of UE, redefine the AL of its ePDCCH.In this example, community A detects the channel quality status of UE-A again, and judges that its classification is UE in the middle of community, and variation has occurred cell edge UE more originally, distributes to the RNTI=30 that UE-A is new, determines the AL=2 of its ePDCCH according to the channel quality of UE.

Step 12, base station is according to the ePDCCH resource subspace of selected its ePDCCH mapping of UE classification of UE, inner in ePDCCH resource subspace, and base station, according to concrete RNTI and the AL of UE, is used hash function to determine the position of placement that its ePDCCH shines upon.In this example, community A carries out ePDCCH mapping to UE-A in MiddleUsers Area region, during mapping according to the RNTI=30 of UE-A, AL=2, substitution hash function carries out Random Maps.

Step 13, its RNTI value to UE is notified in base station.Community A notifies UE-A its RNTI=30 in this example.

Step 15～step 19 is similar to step 6～step 10;

Step 20, gets back to step 11.

To sum up, technical scheme by means of the embodiment of the present invention, RNTI by UE informs the residing ePDCCH resource of UE subspace, in ePDCCH resource subspace, carry out BD again, can be reduced in ePDCCH region is divided into Near-by Users Area, Middle Users Area, Cell-edge UsersArea ... complexity Deng the UE blind Detecting after several subregions.

Embodiment of the method three

According to embodiments of the invention, the method for mapping resource of a kind of PDSCH is provided, Fig. 7 is the flow chart of method for mapping resource of the PDSCH of the embodiment of the present invention, as shown in Figure 7, according to the method for mapping resource of the PDSCH of the embodiment of the present invention, comprises following processing:

Step 701, mutual ePDCCH resource mapping information between base station, and the ePDCCH resource subspace that neighbor cell is taken carries out mark, obtains label information; Label information comprise following one of at least: neighbor cell ePDCCH takies the ePDCCH area type of certain PDSCH resource, UE classification and the occupied number of times that neighbor cell ePDCCH takies certain PDSCH resource.Wherein, ePDCCH area type comprises: UE region and cell edge UE region in the middle of center of housing estate UE region, community; UE classification is: UE and center of housing estate UE in the middle of cell edge UE, community.

Step 702, when the PDSCH resource of Dui Zhe community, current area UE is dispatched, adjusts the dispatching priority of PDSCH resource according to label information;

Step 702 specifically comprises following processing: reduce the dispatching priority that is labeled as the PDSCH resource being taken by neighbor cell ePDCCH, wherein, to ePDCCH region, neighbor cell, disturb the dispatching priority of less PDSCH resource higher than ePDCCH region, neighbor cell being disturbed to the dispatching priority of larger PDSCH resource; Reduction is taken the dispatching priority of PDSCH resource often by neighbor cell ePDCCH; Improve the unmarked dispatching priority for the PDSCH resource that taken by neighbor cell ePDCCH.

Step 703, dispatches corresponding PDSCH resource according to dispatching priority and carries out PDSCH resource mapping.

Step 703 specifically comprises following processing: preferentially call the unmarked PDSCH resource for being taken by neighbor cell ePDCCH; After having dispatched the PDSCH resource not being labeled, preferentially call less PDSCH resource is disturbed in ePDCCH region, neighbor cell.

Wherein, preferentially call and disturb less PDSCH resource specifically to comprise to ePDCCH region, neighbor cell:

First call the PDSCH resource being taken by the center of housing estate UE region of neighbor cell, after the PDSCH resource transfer being taken by center of housing estate UE region is complete, call again the PDSCH resource by UE region takies in the middle of the community of neighbor cell, after UE region takies in the middle of Bei community PDSCH resource transfer is complete, then call the PDSCH resource being taken by the cell edge UE region of neighbor cell; Or,

First call the PDSCH resource being taken by the center of housing estate UE of neighbor cell, after the PDSCH resource transfer being taken by center of housing estate UE is complete, call again the PDSCH resource being taken by UE in the middle of the community of neighbor cell, after UE takies in the middle of Bei community PDSCH resource transfer is complete, then call the PDSCH resource being taken by the cell edge UE of neighbor cell.

That is to say, in embodiments of the present invention, the ePDCCH mapping situation of the every other community being adjacent is detected in base station, and mark the ePDCCH resource that its neighbor cell allocation has taken to UE in the middle of cell edge UE, community, or the ePDCCH resource that other UE classifications take, this depends on engineering staff's oneself demand.When the PDSCH resource of Dui Zhe community, current area UE is dispatched, priority scheduling is not marked as the resource that adjacent other communities ePDCCH takies.Access UE is more in Ruo Zhe community, can be limited for the resource of PDSCH scheduling, dispatched after the resource not being labeled, and scheduling is marked as the ePDCCH resource that the middle UE in neighbor cell takies successively, the ePDCCH resource that edge, neighbor cell UE takies ...Call principle, for preferentially calling, less PDSCH resource is disturbed in ePDCCH region, neighbor cell.

Below in conjunction with example, the technical scheme of the embodiment of the present invention is elaborated.

Consider that ePDCCH disturbs the mapping of the base station PDSCH evading, wherein, N=3:

Step 1, carries out information interaction between base station, current area can detect the ePDCCH mapping situation of the every other community being adjacent, and marks the ePDCCH resource that its neighbor cell allocation has taken to UE in the middle of cell edge UE, community.In this example, community A knows that the Resource Block set of distributing to cell edge UE in the some communities with self direct neighbor is: PRB_cell-edge={PRB_cell-edge_1, PRB_cell-edge_2 ... PRB_cell-edge_n}, the Resource Block set of distributing to the middle UE in community is: PRB_middle={PRB_middle_1, PRB_middle_2 ... PRB_middle_n}.

Step 2, when the PDSCH resource of Dui Zhe community, current area UE is dispatched, priority scheduling is not marked as the resource that adjacent other communities ePDCCH takies.In the present embodiment, the complete or collected works that suppose available PDSCH resource are: RESOURCE={PRB_1, PRB_2 ... PRB_n}.Community A priority scheduling RESOURCE-PRB_cell-edge-PRB_middle.

Step 3, access UE is more in Ruo Zhe community, can be limited for the resource of PDSCH scheduling, dispatched after the resource not being labeled, scheduling is marked as the ePDCCH resource that the middle UE in neighbor cell takies, the ePDCCH resource that edge, neighbor cell UE takies successively.In this example, after " RESOURCE-PRB_cell-edge-PRB_middle " resource exhaustion, community A dispatches " PRB_middle " and " PRB_cell-edge " successively.

To sum up, the technical scheme of the embodiment of the present invention, by the information interaction between community, reduces the dispatching priority that this community and peripheral cell ePDCCH adopt the PDSCH Resource Block that repeats resource.Reduced the probability of the co-channel interference between distinctive PDSCH and ePDCCH in ePDCCH.

Device embodiment mono-

According to embodiments of the invention, the resource mapping apparatus of a kind of ePDCCH is provided, Fig. 8 is the structural representation of resource mapping apparatus of the ePDCCH of the embodiment of the present invention, as shown in Figure 8, according to the resource mapping apparatus of the ePDCCH of the embodiment of the present invention, comprise: divide module 80, determination module 82 and mapping block 84, below the modules of the embodiment of the present invention is described in detail.

Divide module 80, for base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and definite each ePDCCH resource subspace ePDCCH area type corresponding in each community, wherein the ePDCCH resource subspace corresponding to same ePDCCH area type of different districts;

Divide module 80 specifically for:

Base station to its compass of competency in the cell ID ID of community adopt and to differ from one another and after continuous positive integer is numbered, community carries out N delivery to process to the community ID of self, according to the mapping table of the result setting in advance and ePDCCH resource mapping type, determine the ePDCCH resource mapping type of community, the ePDCCH region of Bing Jiang community self is divided into N class, wherein, the type number that the ePDCCH region that N is community is divided;

Base station is numbered the ePDCCH region, base station in its compass of competency, obtain base station ePDCCH resource total collection, and base station ePDCCH resource total collection is divided into N ePDCCH resource subspace, according to the ePDCCH resource mapping type of community, N ePDCCH resource subspace distributed to respectively to the N class ePDCCH region of community;

Determination module 82, for determining the UE classification of user equipment (UE);

Determination module 82 is specifically for the UE classification of determining UE according to the channel quality of UE and/or disturbed condition.

Mapping block 84, for according to the corresponding relation between the UE classification of UE and ePDCCH area type, is mapped to corresponding ePDCCH area type in ePDCCH resource subspace corresponding to this community, UE place by the ePDCCH of UE.

Mapping block 84 specifically for:

According to the channel quality of UE, determine the degree of polymerization of its ePDCCH, and according to the mapping table of UE classification and network temporary code, for UE distributes corresponding network temporary code;

According to UE classification, determine that UE carries out the ePDCCH area type of ePDCCH mapping in its community of living in;

According to ePDCCH area type, determine that UE carries out the ePDCCH resource subspace of ePDCCH mapping in its community of living in, and inner in this ePDCCH resource subspace, according to the degree of polymerization of UE and network temporary code, use hash function to carry out ePDCCH mapping;

The network temporary code of UE is sent to UE.

The device of the embodiment of the present invention also comprises:

Detection module, for detect channel quality and/or the disturbed condition of a UE every the scheduled time, and judges whether current UE classification variation has occurred; If variation has occurred UE classification, and determine in inside, the ePDCCH of this UE classification resource subspace and still have available resources, notify mapping block again the ePDCCH of this UE to be mapped in corresponding ePDCCH resource subspace; If variation has occurred UE classification, and there is no available resources in inside, the ePDCCH of this UE classification resource subspace, kept original ePDCCH resource mapping relation.

Each detailed processing procedure of above-mentioned module has been described in detail in said method embodiment mono-, and the description in can reference method embodiment mono-is understood, and does not repeat them here.

Device embodiment bis-

According to embodiments of the invention, the resource mapping apparatus of a kind of PDSCH is provided, Fig. 9 is the structural representation of resource mapping apparatus of the PDSCH of the embodiment of the present invention, as shown in Figure 9, according to the resource mapping apparatus of the PDSCH of the embodiment of the present invention, comprise: detection module 90, adjusting module 92 and resource mapping module 94, below be described in detail the modules of the embodiment of the present invention.

Detection module 90, for mutual ePDCCH resource mapping information between base station, and the ePDCCH resource subspace that neighbor cell is taken carries out mark, obtains label information;

Adjusting module 92, while dispatching for the PDSCH resource of Dui Zhe community, current area UE, adjusts the dispatching priority of PDSCH resource according to label information;

Adjusting module 92 specifically for:

Reduce the dispatching priority that is labeled as the PDSCH resource being taken by neighbor cell ePDCCH, wherein, to ePDCCH region, neighbor cell, disturb the dispatching priority of less PDSCH resource higher than ePDCCH region, neighbor cell being disturbed to the dispatching priority of larger PDSCH resource;

Reduction is taken the dispatching priority of PDSCH resource often by neighbor cell ePDCCH;

Improve the unmarked dispatching priority for the PDSCH resource that taken by neighbor cell ePDCCH.

Resource mapping module 94, carries out PDSCH resource mapping for dispatch corresponding PDSCH resource according to dispatching priority.

Resource mapping module 94 specifically for:

Preferentially call the unmarked PDSCH resource for being taken by neighbor cell ePDCCH;

After having dispatched the PDSCH resource not being labeled, preferentially call less PDSCH resource is disturbed in ePDCCH region, neighbor cell.

Resource mapping module 94 specifically for:

Each detailed processing procedure of above-mentioned module has been described in detail in said method embodiment tri-, and the description in can reference method embodiment tri-is understood, and does not repeat them here.

Device embodiment tri-

According to embodiments of the invention, the resource demodulating equipment of a kind of ePDCCH is provided, Figure 10 is the structural representation of resource demodulating equipment of the ePDCCH of the embodiment of the present invention, as shown in figure 10, according to the resource demodulating equipment of the ePDCCH of the embodiment of the present invention, comprise: the first acquisition module 100, the second acquisition module 102 and resource demodulation module 104, below be described in detail the modules of the embodiment of the present invention.

The first acquisition module 100, the network temporary code sending for obtaining base station, and obtain the community ID of current community of living in;

The second acquisition module 102, for obtaining the ePDCCH resource mapping type of current community of living in, and the UE classification under obtaining according to the mapping table of network temporary code and UE classification and network temporary code, wherein, the type number that the ePDCCH region that N is community is divided;

The second acquisition module 102 specifically for:

Community ID is carried out to the operation to N delivery, according to operating result, obtain the ePDCCH resource mapping type of current community of living in.

Resource demodulation module 104, for according to the ePDCCH resource mapping type of current community of living in and UE classification, determines the scope of the residing ePDCCH resource of UE subspace, and in scope, adopts the mode of blind Detecting to carry out the resource demodulation of ePDCCH.

Resource demodulation module 104 specifically for:

Hash function and network temporary code during according to mapping, the exhaustive all possible degree of polymerization, and all possible degree of polymerization is carried out to cyclic redundancy CRC check.

Each detailed processing procedure of above-mentioned module has been described in detail in said method embodiment bis-, and the description in can reference method embodiment bis-is understood, and does not repeat them here.

The algorithm providing at this is intrinsic not relevant to any certain computer, virtual system or miscellaneous equipment with demonstration.Various general-purpose systems also can with based on using together with this teaching.According to description above, it is apparent constructing the desired structure of this type systematic.In addition, the present invention is not also for any certain programmed language.It should be understood that and can utilize various programming languages to realize content of the present invention described here, and the description of above language-specific being done is in order to disclose preferred forms of the present invention.

In the specification that provided herein, a large amount of details have been described.Yet, can understand, embodiments of the invention can not put into practice in the situation that there is no these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.

Similarly, be to be understood that, in order to simplify the disclosure and to help to understand one or more in each inventive aspect, in the above in the description of exemplary embodiment of the present invention, each feature of the present invention is grouped together into single embodiment, figure or sometimes in its description.Yet, the method for the disclosure should be construed to the following intention of reflection: the present invention for required protection requires than the more feature of feature of clearly recording in each claim.Or rather, as reflected in claims below, inventive aspect is to be less than all features of disclosed single embodiment above.Therefore, claims of following embodiment are incorporated to this embodiment thus clearly, and wherein each claim itself is as independent embodiment of the present invention.

Those skilled in the art are appreciated that and can the module in the equipment in embodiment are adaptively changed and they are arranged in one or more equipment different from this embodiment.Module in embodiment or unit or assembly can be combined into a module or unit or assembly, and can put them into a plurality of submodules or subelement or sub-component in addition.At least some in such feature and/or process or unit are mutually repelling, and can adopt any combination to combine all processes or the unit of disclosed all features in this specification (comprising claim, summary and the accompanying drawing followed) and disclosed any method like this or equipment.Unless clearly statement in addition, in this specification (comprising claim, summary and the accompanying drawing followed) disclosed each feature can be by providing identical, be equal to or the alternative features of similar object replaces.

In addition, those skilled in the art can understand, although included some feature rather than further feature in this some embodiment comprise other embodiment, the combination of the feature of different embodiment means within scope of the present invention and forms different embodiment.For example, in the following claims, the one of any of embodiment required for protection can be used with compound mode arbitrarily.

All parts embodiment of the present invention can realize with hardware, or realizes with the software module moved on one or more processor, or realizes with their combination.It will be understood by those of skill in the art that and can use in practice microprocessor or digital signal processor (DSP) to realize according to the embodiment of the present invention devicein the some or all functions of some or all parts.The present invention for example can also be embodied as, for carrying out part or all equipment or device program (, computer program and computer program) of method as described herein.Realizing program of the present invention and can be stored on computer-readable medium like this, or can there is the form of one or more signal.Such signal can be downloaded and obtain from internet website, or provides on carrier signal, or provides with any other form.

It should be noted above-described embodiment the present invention will be described rather than limit the invention, and those skilled in the art can design alternative embodiment in the situation that do not depart from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed as element or step in the claims.Being positioned at word " " before element or " one " does not get rid of and has a plurality of such elements.The present invention can be by means of including the hardware of some different elements and realizing by means of the computer of suitably programming.In having enumerated the unit claim of some devices, several in these devices can be to carry out imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title by these word explanations.

Claims

1. a method for mapping resource that strengthens Physical Downlink Control Channel ePDCCH, is characterized in that, comprising:

Base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and definite each ePDCCH resource subspace ePDCCH area type corresponding in each community, wherein the ePDCCH resource subspace corresponding to same ePDCCH area type of different districts;

Determine the UE classification of user equipment (UE);

According to the corresponding relation between the UE classification of described UE and ePDCCH area type, the ePDCCH of described UE is mapped to corresponding ePDCCH area type in ePDCCH resource subspace corresponding to this community, UE place.

2. the method for claim 1, is characterized in that, base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and determines that corresponding ePDCCH area type specifically comprises in each community in each ePDCCH resource subspace:

Base station is numbered the ePDCCH region, base station in its compass of competency, obtain base station ePDCCH resource total collection, and described base station ePDCCH resource total collection is divided into N ePDCCH resource subspace, according to the ePDCCH resource mapping type of community, described N ePDCCH resource subspace distributed to respectively to the N class ePDCCH region of community;

The UE classification of described definite UE specifically comprises:

According to the channel quality of UE and/or disturbed condition, determine the UE classification of UE.

3. the method for claim 1, it is characterized in that, according to the corresponding relation between the UE classification of described UE and ePDCCH area type, the ePDCCH of described UE is mapped to corresponding ePDCCH area type and in ePDCCH resource subspace corresponding to this community, UE place, specifically comprises:

According to described ePDCCH area type, determine that UE carries out the ePDCCH resource subspace of ePDCCH mapping in its community of living in, and inner in this ePDCCH resource subspace, according to the degree of polymerization of UE and network temporary code, use hash function to carry out ePDCCH mapping;

The network temporary code of UE is sent to UE.

4. method as claimed in claim 2, it is characterized in that, base station is numbered the ePDCCH region, base station in its compass of competency, obtains base station ePDCCH resource total collection, and described base station ePDCCH resource total collection is divided into N ePDCCH resource subspace specifically comprises:

Physical Resource Block be take as unit in base station, ePDCCH region, base station is numbered, obtains base station ePDCCH resource total collection, and described base station ePDCCH resource total collection is divided into N ePDCCH resource subspace, wherein, the transmitted power that different e PDCCH resource subspace adopts is different.

5. the method for claim 1, is characterized in that, the ePDCCH area type of described community self comprises: UE region and cell edge UE region in the middle of center of housing estate UE region, community.

6. the method for claim 1, is characterized in that, described UE classification comprises: UE and center of housing estate UE in the middle of cell edge UE, community.

7. the method as described in any one in claim 1 to 6, is characterized in that, after the ePDCCH of different classes of UE being mapped in the ePDCCH resource subspace of respective classes, described method also comprises:

Every the scheduled time, detect channel quality and/or the disturbed condition of a UE, and judge whether current UE classification variation has occurred; If variation has occurred UE classification, and still have available resources in inside, the ePDCCH of this UE classification resource subspace, again the ePDCCH of this UE is mapped in corresponding ePDCCH resource subspace.

8. method as claimed in claim 7, is characterized in that, if variation has occurred UE classification, and there is no available resources in inside, the ePDCCH of this UE classification resource subspace, keeps original ePDCCH resource mapping relation.

9. a method for mapping resource of Physical Downlink Shared Channel PDSCH, is characterized in that, comprising:

Mutual ePDCCH resource mapping information between base station, and the ePDCCH resource subspace that neighbor cell is taken carries out mark, obtains label information;

When the PDSCH resource of Dui Zhe community, current area UE is dispatched, according to described label information, the dispatching priority of PDSCH resource is adjusted;

According to described dispatching priority, dispatch corresponding PDSCH resource and carry out PDSCH resource mapping.

10. method as claimed in claim 9, it is characterized in that, described label information comprise following one of at least: neighbor cell ePDCCH takies the ePDCCH area type of certain PDSCH resource, UE classification and the occupied number of times that neighbor cell ePDCCH takies certain PDSCH resource.

11. methods as claimed in claim 10, is characterized in that, when the PDSCH resource of Dui Zhe community, current area UE is dispatched, according to described label information, the dispatching priority of PDSCH resource are adjusted specifically and are comprised:

12. methods as claimed in claim 11, is characterized in that, dispatch corresponding PDSCH resource carry out PDSCH resource mapping and specifically comprise according to described dispatching priority:

13. methods as claimed in claim 12, is characterized in that,

Described ePDCCH area type comprises: UE region and cell edge UE region in the middle of center of housing estate UE region, community;

Described UE classification is: UE and center of housing estate UE in the middle of cell edge UE, community.

14. methods as claimed in claim 13, is characterized in that, preferentially call and disturb less PDSCH resource specifically to comprise to ePDCCH region, neighbor cell:

First call the PDSCH resource being taken by the center of housing estate UE region of neighbor cell, after the PDSCH resource transfer being taken by described center of housing estate UE region is complete, call again the PDSCH resource by UE region takies in the middle of the community of neighbor cell, after the PDSCH resource transfer being taken by middle UE region, described community is complete, then call the PDSCH resource being taken by the cell edge UE region of neighbor cell; Or,

First call the PDSCH resource being taken by the center of housing estate UE of neighbor cell, after the PDSCH resource transfer being taken by described center of housing estate UE is complete, call again the PDSCH resource being taken by UE in the middle of the community of neighbor cell, after the PDSCH resource transfer being taken by described community centre UE is complete, then call the PDSCH resource being taken by the cell edge UE of neighbor cell.

15. 1 kinds of resource demodulation methods that strengthen Physical Downlink Control Channel ePDCCH, is characterized in that, described method specifically comprises:

User equipment (UE) obtains the network temporary code that base station sends, and obtains the cell ID ID of current community of living in;

Obtain the ePDCCH resource mapping type of current community of living in, and the UE classification under obtaining according to the mapping table of described network temporary code and UE classification and network temporary code, wherein, the type number that the ePDCCH region that N is community is divided;

According to the ePDCCH resource mapping type of current community of living in and described UE classification, determine the scope of the residing ePDCCH resource of UE subspace, and in described scope, adopt the mode of blind Detecting to carry out the resource demodulation of ePDCCH.

16. methods as claimed in claim 15, is characterized in that, the ePDCCH resource mapping type of obtaining current community of living in specifically comprises:

Described community ID is carried out to the operation to N delivery, according to operating result, obtain the ePDCCH resource mapping type of current community of living in.

17. methods as claimed in claim 15, is characterized in that, in described scope, the resource demodulation that the mode of employing blind Detecting is carried out ePDCCH specifically comprises:

Hash function and described network temporary code during according to mapping, the exhaustive all possible degree of polymerization, and all possible degree of polymerization is carried out to cyclic redundancy CRC check.

18. 1 kinds of resource mapping apparatus that strengthen Physical Downlink Control Channel ePDCCH, is characterized in that, comprising:

Divide module, for base station ePDCCH resource total collection is divided into several ePDCCH resource subspaces, and definite each ePDCCH resource subspace ePDCCH area type corresponding in each community, wherein the ePDCCH resource subspace corresponding to same ePDCCH area type of different districts;

Determination module, for determining the UE classification of user equipment (UE);

Mapping block, for according to the corresponding relation between the UE classification of described UE and ePDCCH area type, is mapped to corresponding ePDCCH area type in ePDCCH resource subspace corresponding to this community, UE place by the ePDCCH of described UE.

19. devices as claimed in claim 18, is characterized in that,

Described division module specifically for:

Described determination module specifically for:

20. devices as claimed in claim 18, is characterized in that, described mapping block specifically for:

The network temporary code of UE is sent to UE.

21. devices as described in any one in claim 18 to 20, is characterized in that, described device also comprises:

Detection module, for detect channel quality and/or the disturbed condition of a UE every the scheduled time, and judges whether current UE classification variation has occurred; If variation has occurred UE classification, and determine in inside, the ePDCCH of this UE classification resource subspace and still have available resources, notify described mapping block again the ePDCCH of this UE to be mapped in corresponding ePDCCH resource subspace; If variation has occurred UE classification, and there is no available resources in inside, the ePDCCH of this UE classification resource subspace, kept original ePDCCH resource mapping relation.

The resource mapping apparatus of 22. 1 kinds of Physical Downlink Shared Channel PDSCH, is characterized in that, comprising:

Detection module, for mutual ePDCCH resource mapping information between base station, and the ePDCCH resource subspace that neighbor cell is taken carries out mark, obtains label information;

Adjusting module, while dispatching for the PDSCH resource of Dui Zhe community, current area UE, adjusts the dispatching priority of PDSCH resource according to described label information;

Resource mapping module, carries out PDSCH resource mapping for dispatch corresponding PDSCH resource according to described dispatching priority.

23. devices as claimed in claim 22, is characterized in that, described adjusting module specifically for:

24. devices as claimed in claim 23, is characterized in that, described resource mapping module specifically for:

25. devices as claimed in claim 24, is characterized in that, described resource mapping module specifically for:

26. 1 kinds of resource demodulating equipments that strengthen Physical Downlink Control Channel ePDCCH, is characterized in that, comprising:

The first acquisition module, the network temporary code sending for obtaining base station, and obtain the community ID of current community of living in;

The second acquisition module, for obtaining the ePDCCH resource mapping type of current community of living in, and the UE classification under obtaining according to the mapping table of described network temporary code and UE classification and network temporary code, wherein, the type number that the ePDCCH region that N is community is divided;

Resource demodulation module, for according to the ePDCCH resource mapping type of current community of living in and described UE classification, determines the scope of the residing ePDCCH resource of UE subspace, and in described scope, adopts the mode of blind Detecting to carry out the resource demodulation of ePDCCH.

27. devices as claimed in claim 26, is characterized in that, described the second acquisition module specifically for:

28. devices as claimed in claim 26, is characterized in that, described resource demodulation module specifically for: