CN102761398A - Control channel and reference signal transmitting and receiving method, base station and user device - Google Patents

Abstract

The invention provides a control channel and reference signal transmitting and receiving method, a base station and a user device. The control channel transmitting method comprises the following steps: generating control channel contents corresponding to a cell identity and a configuration identity for the channel state information reference signal CSI-RS configured for the user device in the cell; and mapping the control channel contents to time frequency resources according to the cell identity and the CSI-RS configuration identity for transmission. According to the technical scheme of the invention, multiple control channels can be generated for one cell to improve the capacity of the control channels of the cell, thereby increasing the number of UE which can be really served in the cell and enhancing the service performance of the cell.

Description

Control channel and reference signal emission and method of reseptance, base station and subscriber equipment

Technical field

The embodiment of the invention relates to wireless communication technology, relates in particular to a kind of control channel emission and method of reseptance, reference signal emission and method of reseptance, base station and subscriber equipment.

Background technology

The spaced antenna technology allows the base station is divided into radio base band control (Radio Server; Abbreviate as: RS) with far end radio frequency head (Remote Radio Head; Abbreviate as: therefore RRH) two parts, have the access point of shortening and subscriber equipment (User Equipment; Abbreviate as: the distance UE), reduce path loss, expand the coverage area, improve advantages such as systematic function.At advanced Long Term Evolution (the Long Term Evolution-Advanced of 3GPP; Abbreviate as: LTE-A) collaborative multiple spot transmitting-receiving (the Coordinated Multiple Point Transmission and Reception of Rel11; Abbreviate as: CoMP) in the technology; Adopted the spaced antenna technology; In macrocell coverage area, disposed several lower powered RRH, these RRH have identical sub-district ID with the place macrocell, and direct-connected through the optical fiber and the RS in the macrocell of high power capacity, low time delay.Compare with original centralized antenna configurations mode, these RRH under the spaced antenna configuration mode have shortened the distance between access point and the UE, have improved the UE quantity that can serve same sub-district greatly, have improved the performance of system.

Wherein, the UE quantity that can really obtain serving in the sub-district is to weigh a benchmark of estate performance, and the UE that can really obtain serving in the sub-district be meant can be by the UE of the scheduling of the control channel in the sub-district.In existing LTE system; Control channel is that the sub-district is specific; That is to say in same sub-district; Be that content or the employed running time-frequency resource of launching on the control channel all is identical, in like manner, the employed cell specific reference signal of demodulation control channel (Cell-specific ReferenceSignals; Abbreviate as: CRS) sequence and the CRS sequence shift parameters when frequency domain resource is shone upon also is identical.Under the spaced antenna configuration mode, for fear of interference, perhaps adopt the mode of all transmission point (comprising RRH and RS) emission control simultaneously channels, perhaps adopt some transmission point emission simultaneously, and the mode that other transmission points do not transmit control channel is dispatched UE.But no matter adopt which kind of mode; Only there is a control channel in the system; And the UE quantity that control channel can be dispatched is to be confirmed by the radiation pattern of the system bandwidth of sub-district, transmitting antenna port number, scheduling UE; Therefore, after the sub-district was confirmed, the UE quantity that control channel can be dispatched had also just been confirmed.This shows that the capacity of control channel becomes the bottleneck that improves the UE quantity that can really obtain in the sub-district under the spaced antenna configuration mode serving, and has limited the raising of estate performance.

Summary of the invention

The embodiment of the invention provides a kind of control channel emission and method of reseptance, reference signal emission and method of reseptance, base station and subscriber equipment; UE quantity in order to can really obtain in the sub-district under the raising spaced antenna configuration mode serving improves the service performance of sub-district.

The embodiment of the invention provides a kind of control channel launching technique, comprising:

Generation and cell ID and be subscriber equipment disposed in the sub-district the corresponding control channel content of channel state information reference signals CSI-RS configuration identifier;

According to said cell ID and said CSI-RS configuration identifier, said control channel content map is launched on the time-frequency resource.

The embodiment of the invention provides a kind of control channel method of reseptance, comprising:

Subscriber equipment is according to the cell ID that belongs to the sub-district and be the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives the control channel content.

The embodiment of the invention provides a kind of reference signal launching technique, comprising:

According to cell ID be the channel state information reference signals CSI-RS configuration identifier that subscriber equipment disposed in the sub-district, emission cell specific reference signal CRS on running time-frequency resource.

The embodiment of the invention provides a kind of reference signal receiving method, comprising:

Subscriber equipment is according to the cell ID that belongs to the sub-district and be the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives cell specific reference signal CRS.

The embodiment of the invention provides a kind of base station, comprising:

The channel generation module is used to generate with cell ID and is subscriber equipment disposed in the sub-district the corresponding control channel content of channel state information reference signals CSI-RS configuration identifier;

The mapping transmitter module is used for according to said cell ID and said CSI-RS configuration identifier said control channel content map being launched on the time-frequency resource.

The embodiment of the invention provides a kind of subscriber equipment, comprising:

First generates receiver module, is used for according to the cell ID of sub-district, place and is the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives the control channel content.

The embodiment of the invention provides a kind of base station again, comprising:

Generate transmitter module, be used for according to cell ID and be the channel state information reference signals CSI-RS configuration identifier that subscriber equipment disposed in the sub-district, emission cell specific reference signal CRS sequence on running time-frequency resource.

The embodiment of the invention provides a kind of subscriber equipment again, comprising:

Second generates receiver module, is used for according to the cell ID of sub-district, place and is the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives cell specific reference signal CRS sequence.

The control channel emission of the embodiment of the invention and method of reseptance, reference signal emission and method of reseptance, base station and subscriber equipment; The control channel content that the base station generation is corresponding with cell ID and CSI-RS configuration identifier; And the control channel content map that is generated is sent to subscriber equipment to corresponding running time-frequency resource according to cell ID and CSI-RS; Guaranteed that interference between each control channel is in the desired scope of system; And the CRS sequence of on running time-frequency resource, launching each control channel of aid demodulation according to cell ID and CSI-RS configuration identifier; Make that the CRS between the adjacent transmission point is a quadrature on time-frequency, guaranteed that the UE in each transmission point coverage can accurately receive and successfully demodulate control information corresponding, realized through generating the purpose of capacity that a plurality of control channels improve the control channel of sub-district; Increase the UE quantity that really to be served in the sub-district, improved the service performance of sub-district.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

The flow chart of the control channel launching technique that Fig. 1 provides for the embodiment of the invention one;

Fig. 2 A is the flow chart of the UE side that provides of one embodiment of the invention to first kind of execution mode of PCFICH;

Fig. 2 B is the flow chart of the UE side that provides of one embodiment of the invention to second kind of execution mode of PCFICH;

Fig. 2 C is the flow chart of the UE side that provides of one embodiment of the invention to the third execution mode of PCFICH;

The base station side that Fig. 3 A is depicted as one embodiment of the invention to be provided is directed against the flow chart of first kind of execution mode of CRS sequence;

The base station side that Fig. 3 B is depicted as one embodiment of the invention to be provided is directed against the flow chart of second kind of execution mode of CRS sequence;

Fig. 3 C is the flow chart of the base station side that provides of one embodiment of the invention to the third execution mode of CRS sequence;

Fig. 4 A is the flow chart of the UE side that provides of one embodiment of the invention to first kind of execution mode of CRS sequence;

Fig. 4 B is the flow chart of the UE side that provides of one embodiment of the invention to second kind of execution mode of CRS sequence;

Fig. 4 C is the flow chart of the UE side that provides of one embodiment of the invention to the third execution mode of CRS sequence;

Fig. 5 A is a kind of structural representation of the base station that provides of one embodiment of the invention;

Fig. 5 B is another structural representation of the base station that provides of one embodiment of the invention;

The structural representation of the UE that Fig. 6 provides for one embodiment of the invention;

The structural representation of the base station that Fig. 7 provides for another embodiment of the present invention;

The structural representation of the UE that Fig. 8 provides for another embodiment of the present invention.

Embodiment

For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

The flow chart of the control channel launching technique that Fig. 1 provides for the embodiment of the invention one.As shown in Figure 1, the method for present embodiment comprises:

The channel state information reference signals that UE disposed in step 101, generation and cell ID (ID) and the sub-district (Channel State Information Reference Signals; Abbreviate as: CSI-RS) the corresponding control channel content of configuration identifier.

In the LTE system that adopts the spaced antenna configuration, a cell configuration has a RS and a plurality of RRH, and each RRH is direct-connected through the optical fiber and the RS in the sub-district of high power capacity, low time delay, and each RRH has identical cell ID (being sub-district ID) with RS.Wherein, RRH and RS belong to the part of base station.

Compare with the traditional centralized antenna system, the cell coverage area of distributing antenna system has enlarged greatly, and is separate on geography between each transmission point; Cover also and separate each other; Certain overlapping is arranged simultaneously, for this reason, on data channel; Different UE configuration different antennas ports is given through high-level signaling in the base station; Make diverse access point (being RS or RRH) for different UE service is provided simultaneously, promptly realize same running time-frequency resource, to obtain the purpose of bigger cell splitting gain by repeatedly multiplexing.In the LTE system, the CSI-RS configuration identifier is corresponding to the UE in this sub-district CSI-RS of the antenna port of employing altogether, and each CSI-RS launches employed running time-frequency resource.Under the spaced antenna scene, the base station is through giving different UE configuration corresponding C SI-RS signs, and UE being connected to this UE of implicit expression has on the transmission point of identical CSI-RS port arrangement.

Based on above-mentioned, in the present embodiment, the quantity of control channel content is confirmed to generate simultaneously according to sub-district ID and CSI-RS configuration identifier in the base station.For a sub-district; If for the UE in this sub-district has disposed a plurality of CSI-RS configuration identifiers; Generate the control channel content corresponding just according to CSI-RS configuration identifier for UE disposed in the sub-district with sub-district ID and CSI-RS configuration identifier; The sub-district further is divided into Microcell, generates a control channel content for each Microcell then.Concrete, the sub-district ID and each sub-district that store each sub-district on the base station are the CSI-RS configuration identifier that UE disposed; A sub-district is at first confirmed according to sub-district ID in the base station, and according to being that the CSI-RS configuration identifier that each UE disposed in the sub-district is divided into a plurality of UE groups with the UE in this sub-district, wherein, the UE with identical CSI-RS configuration identifier is divided into a UE group then; Then, the base station is that unit is dispatched the UE in this sub-district with the UE group, and for each UE group generates a control channel content, the base station will generate a plurality of control channel contents for same sub-district like this.Because it is certain that each control channel content can be dispatched the quantity of UE; Therefore; Increased the capacity of the control channel of this sub-district comparatively speaking through generating a plurality of control channel contents; That is increased in this sub-district the quantity of the UE that can really obtain serving, improved the service performance of this sub-district.

Wherein, each control channel content mainly comprises: physical layer control format indicating channel (PhysicalControl Format Indicator Channel; Abbreviate as: PCFICH), physical layer descending control channel (Physical Downlink Control Channel; Abbreviate as: PDCCH) with physical layer combining retransmission indicating channel (Physical Hybrid-ARQ Indicator Channel; Abbreviate as: PHICH).

Step 102, according to cell ID and CSI-RS configuration identifier, the control channel content map is launched on the time-frequency resource.

When the base station is that a sub-district is when generating a plurality of control channel content; Because there is overlapping region in the coverage of different transmission points (being RS or RRH), therefore, can have certain interference between each control channel content; For this reason; The base station is carried out mapping treatment according to sub-district ID and CSI-RS configuration identifier to a plurality of control channel contents simultaneously before the content transmitting control channel, and makes between the different control channel contents mutually orthogonally, is launching on the running time-frequency resource accordingly then; To solve the mutual interference problem between each control channel content, make the phase mutual interference between each control channel content satisfy system requirements.

The control channel launching technique of present embodiment; The base station according to sub-district ID and for CSI-RS that UE disposed be that same sub-district generates a plurality of control channel contents; And, make different control channel contents have orthogonality relation according to sub-district ID with for CSI-RS that UE disposed carries out mapping treatment to a plurality of control channel contents, on corresponding running time-frequency resource, launching then; Both improved the capacity of sub-district inner control channel; Promptly improved and really to have obtained the UE quantity of serving in the sub-district, improved the service performance of sub-district, solved the interference problem between a plurality of control channel contents again.Said a plurality of control channel can belong to diverse access point respectively, for example, belongs to a RS and a RRH.

Wherein, when each control channel content comprised PCFICH, the processing that carry out the control channel content base station mainly comprised: PCFICH is carried out scrambling, modulation, layer mapping, precoding and packet map etc.Then step 102 is according to sub-district ID and CSI-RS configuration identifier, the control channel content map launched on the time-frequency resource specifically can adopt following any one execution mode:

Base station side is directed against first kind of execution mode of PCFICH: the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PCFICH, the PCFICH after the scrambling is mapped on the running time-frequency resource launches.Concrete; The base station is carried out scrambling according to formula (1) to PCFICH; Then to the PCFICH after the scrambling modulate, layer mapping, precoding processing, the sequence after the precoding processing is 16 symbols, is divided into four groups of subsequences according to the sequence of LTE standard after with precoding processing again; Be about to continuous 4 symbols as a quaternary ancestral, and be mapped on 4 resource elements (being the resource element group) and launch.

$\tilde{b}=(b+c1)\mathrm{mod}2---\left(1\right)$

Wherein, b is that the inherent PCFICH of a sub-frame goes up the symbol sebolic addressing of emission, for example: b (0) ..., b (31);

is the symbol sebolic addressing after the scrambling; C1 is a random sequence, and in the LTE system, adopting length usually is that 31 Gold sequence is as random sequence c1; Wherein, the initial value of random sequence c1 is determined according to sub-district ID and CSI-RS configuration identifier; Mod is a modulus operator.Concrete,

be i=0...31 wherein.Because the initial value of random sequence c1 is confirmed by sub-district ID and CSI-RS configuration identifier, therefore for the PCFICH that is generated by different CSI-RS configuration identifiers in the same sub-district, with mutually orthogonal, has been reduced the phase mutual interference between each PCFICH.

Concrete, the initial value c of c1 can be confirmed according to formula (2) or formula (3) or formula (4) in the base station _1init

Wherein, n _sBe the time slot position in the radio frames, in the present embodiment, this time slot position is the time slot position that PCFICH is mapped to.In the present embodiment, each radio frames comprises 10 sub-frame, and each subframe has 2 time slots (slot) to form again, and each time slot is divided into 7 OFDMs (Orthogonal Frequency Division Multiplexing; Abbreviate as: OFDM) symbol.

Be sub-district ID; N _{CSI-RS-Config}For this

Corresponding is the CSI-RS configuration identifier that different UEs disposed in the sub-district.Existing Rel10/11 user in the sub-district, when again Rel8/9 user being arranged, because Rel-8 or Rel-9 user can't discern the CSI-RS configuration identifier, therefore, N can be adopted in the base station _{CSI-RS-Config}Default value 0 come to generate the control channel content for Rel8/9 user.

Further specify; In the present embodiment; The base station is not limited to shown in above-mentioned formula (2) (3) or (4) according to the initial value of sub-district ID and the determined random sequence c1 of CSI-RS configuration identifier; For example in above-mentioned each formula except adding the CSI-RS configuration identifier, can also be to deduct the CSI-RS configuration identifier.As long as the initial value of random sequence c1 is to be the basis with the existing formula that calculates the initial value of random sequence c1, after having considered the CSI-RSI configuration identifier, calculated, all be applicable to present embodiment.Be position and the mode that the CSI-RS configuration identifier occurs in the formula of the initial value of existing calculating random sequence c1, present embodiment is not all done qualification.

By above-mentioned visible; In this execution mode; The initial value of employed random sequence was to generate according to sub-district ID and CSI-RS configuration identifier simultaneously when each PCFICH was carried out scrambling; No matter two PCFICH are corresponding is that sub-district ID is identical and the CSI-RS configuration identifier is different, sub-district ID difference that still corresponding is and the CSI-RS configuration identifier is identical, and the initial value of two PCFICH corresponding random sequences is difference all; Can be after the random sequence of using different values is carried out scrambling to PCFICH with the interference randomization between two PCFICH, thus interference reduced.Be this execution mode before emission, realized randomization, overlap each other and cause the problem of phase mutual interference between the control channel thereby solved the coverage of putting because of each transmission in the same sub-district to noise and interference through symbol sebolic addressing is carried out scrambling process.

In the present embodiment mode; In the process of PCFICH being carried out scrambling, make the interference randomization between each PCFICH; Therefore, can adopt the prior art scheme to implement for subsequent processes, promptly handling for modulation, layer mapping, precoding and packet map etc. can be referring to prior art.For example: prior art is only carried out packet map according to the symbol sebolic addressing of sub-district ID after to precoding processing and is handled, and concrete this execution mode of implementation procedure is no longer done detailed description.

Base station side is directed against second kind of execution mode of PCFICH: scrambling is carried out to PCFICH in the base station, the PCFICH after the scrambling is mapped on the running time-frequency resource corresponding with sub-district ID and CSI-RS configuration identifier launches.In this embodiment; The base station adopts prior art that the symbol sebolic addressing of on PCFICH, launching is carried out scrambling process; Promptly only confirm the initial value of scrambling, and symbol sebolic addressing is carried out scrambling process based on this initial value corresponding random sequence with random sequence according to sub-district ID.After scrambling process, the base station also can modulate the symbol sebolic addressing after the scrambling, layer mapping, precoding processing, obtains the sequence after the processing; Carry out packet map and emission according to sub-district ID and the CSI-RS configuration identifier sequence after to precoding processing then.Concrete, suppose that the sequence of after scrambling, modulation, layer mapping, precoding processing, on PCFICH, launching is y (i)=[y ⁽⁰⁾(i) ... y ^(P-1)(i)] ^T, wherein, y ^(p)(i) signal on p antenna port of expression, p=0...P-1, i=0...15; P is the total quantity of sub-district internal antenna port.The base station is divided into four groups of subsequences according to the LTE standard with the sequence on each antenna port.Be that example describes with the signal on p the antenna port specifically, the base station obtains four groups of subsequences according to formula (5).

z ^(p)(j)＝<y ^(p)(4j)，y ^(p)(4j+1)，y ^(p)(4j+2)，y ^(p)(4j+3)> (5)

Wherein, j=0...3 then gets access to z ^(p)(0), z ^(p)(1), z ^(p)(2), z ^(p)(3) four groups of subsequences.Afterwards, the base station is mapped to four groups of subsequences respectively on the corresponding resource element group according to formula (6) and launches.

Wherein, k _jBe the resource element group that j group subsequence is mapped to, j=0...3, i.e. k ₀, k ₁, k ₂, k ₃Be respectively and z ^(p)(0), z ^(p)(1), z ^(p)(2), z ^(p)(3) the resource element group of correspondence.Wherein,

is downlink resource blocks quantity.

Formula by aforementioned calculation

can be known; In this embodiment; The base station is carried out mapping treatment according to sub-district ID and CSI-RS configuration identifier to each PCFICH simultaneously; Can the PCFICH corresponding with sub-district ID and CSI-RS configuration identifier that step 101 generates be mapped to respectively with sub-district ID and CSI-RS configuration identifier corresponding, launch on the different resources element set; Reduced the phase mutual interference between each PCFICH when launching a plurality of PCFICH simultaneously; Make the phase mutual interference between each PCFICH satisfy system requirements; And then increased and can really obtain the UE quantity of serving in the sub-district through launching a plurality of PCFICH, improved the service performance of sub-district.

Base station side is to the third execution mode of PCFICH: the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PCFICH, then, the PCFICH after the scrambling is mapped on the running time-frequency resource corresponding with sub-district ID and CSI-RS configuration identifier launches.In this embodiment, the base station is at first carried out scrambling according to sub-district ID and CSI-RS configuration identifier to the symbol sebolic addressing in the PCFICH emission, and this scrambling process can repeat no more at this referring to the description in first kind of execution mode.Processing such as after the scrambling process, the sequence of base station after to scrambling modulated, layer mapping, precoding, these processing can be adopted the prior art scheme, repeat no more at this.Then, the base station is carried out packet map processing and emission according to sub-district ID and CSI-RS configuration identifier to the sequence after above-mentioned processing simultaneously.Concrete packet map is handled operation and can be repeated no more at this referring to the description in second kind of execution mode.

In this embodiment; The base station adopts sub-district ID simultaneously and the symbol sebolic addressing in the PCFICH emission is carried out scrambling process to the CSI-RS configuration identifier and packet map is handled; Further randomization has been carried out in the interference between each PCFICH; Further reduce interference mutual when each PCFICH launches at the same time, when guaranteeing that system requirements is satisfied in the phase mutual interference between each PCFICH, improved the capacity of sub-district inner control channel; Increase the quantity of the UE that really obtains in the sub-district serving, improved the service performance of sub-district.

Further, when each control channel content comprised PDCCH, the mapping treatment that carry out the control channel content base station mainly comprised: PDCCH is carried out scrambling, modulation, layer mapping, precoding, grouping and cyclic shift etc.Then step 102 is according to sub-district ID and CSI-RS configuration identifier, the control channel content map launched on the time-frequency resource specifically can adopt following any one execution mode:

Base station side is directed against first kind of execution mode of PDCCH: the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PDCCH, the PDCCH after the scrambling is carried out cyclic shift handle, and the cyclic shift process result is launched on running time-frequency resource.In this embodiment, the base station adopts formula (7) that PDCCH is carried out scrambling process.

$\tilde{d}=(d+c2)\mathrm{mod}2---\left(7\right)$

Wherein, d is that the inherent PDCCH of a sub-frame goes up the symbol sebolic addressing of emission;

is the symbol sebolic addressing after the scrambling; C2 is a random sequence, and in the LTE system, adopting length usually is that 31 Gold sequence is as random sequence c2; The initial value of random sequence c2 is determined according to cell ID and CSI-RS configuration identifier.Concrete,

be i=0...31 wherein.Because the initial value of random sequence c2 is confirmed by sub-district ID and CSI-RS configuration identifier; Therefore for generating the PDCCH after the random sequence scrambling by different CSI-RS configuration identifiers in the same sub-district; Mutual interference is the randomization that becomes, thereby improves each PDCCH receptivity.

Concrete, the base station can be confirmed the initial value c of random sequence c2 according to following formula (8) or formula (9) _2init

Wherein, n _sBe the time slot position in the radio frames, in the present embodiment, this time slot position is the time slot position that PDCCH is mapped to.

In like manner; In this execution mode; The base station is not limited to shown in above-mentioned formula (8) or (9) according to the initial value of sub-district ID and the determined random sequence c2 of CSI-RS configuration identifier, for example in above-mentioned each formula except adding the CSI-RS configuration identifier, can also be to deduct the CSI-RS configuration identifier.As long as the initial value of random sequence c2 is to be the basis with the existing formula that calculates the initial value of random sequence c2, after having considered the CSI-RSI configuration identifier, calculated, all be applicable to present embodiment.Be position and the mode that the CSI-RS configuration identifier occurs in the formula of the initial value of existing calculating random sequence c2, present embodiment is not all done qualification.

Wherein, in this embodiment, the base station further adopt prior art to the sequence on the PDCCH modulate, processing such as layer mapping, grouping and cyclic shift, concrete processing procedure no longer details.

In this execution mode; The base station is simultaneously carried out scrambling process according to sub-district ID and CSI-RS configuration identifier to PDCCH randomization has been carried out in interference between each PDCCH and noise; Reduced the phase mutual interference between each PDCCH, caused the problem of phase mutual interference between the control channel thereby solved because of the coverage of each transmission point in the same sub-district overlaps each other.

Base station side is to second kind of execution mode of PDCCH: scrambling is carried out to PDCCH in the base station, and the PDCCH after to scrambling carries out the cyclic shift processing according to sub-district ID and CSI-RS configuration identifier, and the cyclic shift process result is launched on running time-frequency resource.In this embodiment; The base station at first adopts the prior art mode that the symbol sebolic addressing of on PDCCH, launching is carried out scrambling process; Refer to that promptly the base station only generates the initial value of the employed random sequence of scrambling according to sub-district ID, adopt this initial value corresponding random sequence that symbol sebolic addressing is carried out scrambling process then.After the scrambling process, the symbol sebolic addressing of base station after to scrambling modulated, after layer mapping, precoding and the packet transaction, obtain the experimental process sequence.Wherein, the quantity of subsequence is looked the length of PDCCH and is decided.In this execution mode; For the further phase mutual interference between each PDCCH of randomization; To reduce the interference between each PDCCH, after obtaining each subsequence, the base station is further carried out the cyclic shift processing according to sub-district ID and CSI-RS configuration identifier to each subsequence simultaneously; Then the cyclic shift process result is being launched on the running time-frequency resource of its distribution.

Concrete, be example with the signal on p the antenna port, the cyclic shift process in this execution mode is elaborated.Suppose that the experimental process sequence that p the signal on the antenna port obtains is respectively: w after modulation, layer mapping, precoding and packet map are handled ^(p)(0) ..., w ^(p)(M _Quad-1), wherein, M _QuadIt is the number of signal subspace sequence on p the antenna port.Then the base station is carried out cyclic shift to each subsequence and is handled specifically according to formula (10).

${\stackrel{\&OverBar;}{w}}^{\left(p\right)}\left(i\right)=w^{\left(p\right)}\left((i+N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})\mathrm{mod}{M}_{\mathrm{quad}}\right)---\left(10\right)$

Wherein, Be p the i group burst after the antenna port cocycle displacement, i=0...M _Quad-1.

Visible by above-mentioned formula (10); The base station is carried out the cyclic shift processing according to sub-district ID and CSI-RS configuration identifier to PDCCH simultaneously, because the corresponding CSI-RS configuration identifier difference of the different PDCCH in the same sub-district, therefore; The cyclic shift process result will obtain a plurality of different PDCCH; And different PDCCH will be assigned on the different resources element set, and the running time-frequency resource that each PDCCH is corresponding has carried out randomization, has reduced the interference between each PDCCH; And then realized improving the purpose of the capacity of sub-district inner control channel through a plurality of PDCCH; Increased and really to have obtained the UE quantity of serving in the sub-district, improved the service quality of sub-district, adapted with the spaced antenna configuration mode.

Base station side is directed against the third execution mode of PDCCH: the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PDCCH; Then; Carry out cyclic shift according to sub-district ID and the CSI-RS configuration identifier PDCCH after to scrambling and handle, the cyclic shift process result is launched on running time-frequency resource.In this embodiment; The base station is carried out scrambling process according to sub-district ID and CSI-RS configuration identifier to the burst of on PDCCH, launching at first simultaneously; To realize that randomized purpose is carried out in interference between the burst on each PDCCH and noise, reduce the interference between each PDCCH.Wherein, the scrambling process process can repeat no more at this referring to the description in first kind of execution mode.After scrambling process, each subsequence is obtained in processing such as the burst after the base station adopts prior art to scrambling process is modulated, layer mapping, precoding and grouping.Afterwards; The base station is carried out cyclic shift according to sub-district ID and CSI-RS to each subsequence simultaneously; So that each subsequence is assigned randomly on the different resources element set, realize further randomization to the interference between each PDCCH, further reduce the interference between each PDCCH.Wherein, the concrete implementation procedure of cyclic shift can repeat no more at this referring to the description in above-mentioned second kind of execution mode.

In this execution mode; The base station is carried out scrambling and cyclic shift processing according to sub-district ID and CSI-RS configuration identifier to each PDCCH simultaneously; With as far as possible farthest randomization of the interference between each PDCCH; Reduced the interference between each PDCCH, thereby realized generating the capacity that a plurality of control channels improve sub-district inner control channel, increased and really to obtain the UE quantity of serving in the sub-district for same sub-district; Improve the service quality of sub-district, adapted to the development of spaced antenna configuration mode.

Further, when each control channel content comprised PHICH, the base station mainly comprised the processing of control channel content: PHICH is carried out scrambling, modulation, layer mapping, resource mapping etc.Then step 102 is according to sub-district ID and CSI-RS configuration identifier, the control channel content map launched on the time-frequency resource specifically can adopt following any one execution mode.

Base station side is directed against first kind of execution mode of PHICH: the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PHICH, the PHICH after the scrambling is mapped on the running time-frequency resource launches.In this embodiment, the base station is carried out scrambling process according to formula (11) to PHICH.

Wherein, e is the symbol sebolic addressing after the spectrum-spreading and scrambling, and z is the symbol sebolic addressing on the PHICH after the scrambling, i=0 ..., M _Symb-1,

M _sBe the symbolic number of z,

Be the spreading factor of PHICH, when adopting regular circulation prefix (Cyclic Prefix; Abbreviate as: in the time of CP),

Be 4, when adopting expansion CP,

Be 2.

is an orthogonal sequence.C3 is a random sequence, and in the LTE system, adopting length usually is that 31 Gold sequence is as random sequence c3; Wherein, the initial value of random sequence c3 is determined according to sub-district ID and CSI-RS configuration identifier.

Concrete, the base station can adopt formula (12) to confirm the initial value c of random sequence c3 _3init

Wherein, n _sBe the time slot position in the radio frames, in the present embodiment, this time slot position is the time slot position that PHICH is mapped to.

In this execution mode; The base station is not limited to shown in the above-mentioned formula (12) according to the initial value of sub-district ID and the determined random sequence c3 of CSI-RS configuration identifier; For example in above-mentioned formula except adding the CSI-RS configuration identifier, can also be to deduct the CSI-RS configuration identifier.As long as the initial value of random sequence c3 is to be the basis with the existing formula that calculates the initial value of random sequence c3, after having considered the CSI-RSI configuration identifier, calculated, all be applicable to present embodiment.Be position and the mode that the CSI-RS configuration identifier occurs in the formula of the initial value of existing calculating random sequence c3, present embodiment is not all done qualification.

Wherein, in this embodiment, the base station further adopt prior art to the sequence on the PHICH modulate, processing such as layer mapping, resource mapping, specifically processing procedure no longer details.

In this execution mode; The base station is simultaneously carried out scrambling process according to sub-district ID and CSI-RS configuration identifier to PHICH randomization has been carried out in interference between each PHICH and noise; Reduced the phase mutual interference between each PHICH, caused the problem of phase mutual interference between the control channel thereby solved because of the coverage of each transmission point in the same sub-district overlaps each other.

Base station side is directed against second kind of execution mode of PHICH: spectrum-spreading and scrambling is carried out to PHICH in the base station, the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource corresponding with sub-district ID and CSI-RS configuration identifier launches.In this embodiment, the base station at first adopts prior art that the burst of on PHICH, launching is carried out spread spectrum and scrambling process; Then the burst after the spectrum-spreading and scrambling is modulated with layer mapping and waited processing.Afterwards, the resource mapping will be carried out through the sequence after the above-mentioned processing according to formula (13) in the base station, launch each PHICH is mapped on the corresponding running time-frequency resource (sub-district ID that uses when promptly generating PHICH and the corresponding running time-frequency resource of CSI-RS configuration identifier).

Wherein,

For on the OFDM symbol, all are not assigned to the position in the resource element group of PCFICH; n ₁Be on the 1st the OFDM symbol, unallocated number of giving the resource element group of PCFICH;

Be l ' _jOn the individual OFDM symbol, unallocated number of giving the resource element group of PCFICH; At normal PHICH in the duration, as far as all subframe type, this l ' _jBe 0; ,, be somebody's turn to do in the duration at expansion PHICH the MBSFN subframe

, for 1/6 work song frame in the frame structure type 2, be somebody's turn to do in the duration at expansion PHICH

For other situation, this l ' _jBe j.Wherein, m ' is the intermediate variable of PHICH when doing the resource mapping, and it is since 0, and every circulation primary increases by 1.

Can know by above-mentioned formula (13); In this embodiment; The base station is carried out mapping treatment according to sub-district ID and CSI-RS configuration identifier to each PHICH simultaneously; Can the PHICH corresponding with different districts ID and CSI-RS configuration identifier that step 101 generates be mapped to respectively on the different resources element set and launch, reduce the phase mutual interference between each PHICH when launching a plurality of PHICH simultaneously, make that system requirements is satisfied in the phase mutual interference between each PHICH; And then increased and can really obtain the UE quantity of serving in the sub-district through launching a plurality of PHICH, improved the service performance of sub-district.

Base station side is directed against the third execution mode of PHICH: the base station is carried out spectrum-spreading and scrambling according to sub-district ID and CSI-RS configuration identifier to PHICH; Then, the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource corresponding with sub-district ID and CSI-RS configuration identifier launches.Concrete, the base station is carried out spectrum-spreading and scrambling process according to sub-district ID and CSI-RS configuration identifier to PHICH at first simultaneously, and concrete processing procedure can repeat no more at this referring to the description in first kind of execution mode.Afterwards, the sequence after the base station can adopt prior art to spectrum-spreading and scrambling is modulated and layer mapping treatment; Then, the base station simultaneously according to sub-district ID and CSI-RS configuration identifier to carrying out the resource mapping through the sequence after the above-mentioned processing and launching.Concrete resource mapping treatment process can repeat no more at this referring to the description in above-mentioned second kind of execution mode.

In this execution mode; The base station is carried out scrambling and resource mapping treatment according to sub-district ID and CSI-RS configuration identifier to the burst that PHICH goes up emission simultaneously; With as far as possible farthest randomization of the interference between each PHICH; Reduced the interference between each PHICH, thereby realized generating the capacity that a plurality of control channels improve sub-district inner control channel, increased and really to obtain the UE quantity of serving in the sub-district for same sub-district; Improve the service quality of sub-district, adapted to the development of spaced antenna configuration mode.

Further specify, the control channel content can comprise PCFICH, PDCCH and PHICH simultaneously, and any one processing mode that can adopt above-mentioned execution mode to provide to the processing of each control channel, and the processing mode between each control channel is unrestricted each other.

Further, in above-mentioned each embodiment or execution mode are implemented, before to be the base station according to sub-district ID and CSI-RS configuration identifier generate a plurality of control channel contents, also comprise: step 100, obtain the CSI-RS configuration identifier in step 101.Wherein, a kind of mode of the CSI-RS of obtaining configuration identifier is: the base station directly obtains pre-configured CSI-RS configuration identifier.For example: for the UE under the Rel-8/9 system and also do not dispose the UE under the Rel-10/11 system of CSI-RS port; The base station is when carrying out control channel generation and resource mapping; Adopt the default value of pre-configured CSI-RS; For example unified employing 0, then the base station generates the control channel content and the control channel content is carried out scrambling or mapping treatment with acquiescence CSI-RS configuration identifier according to sub-district ID simultaneously.

The mode that another kind obtains the CSI-RS configuration identifier is: the base station receives the CSI-RS received power that UE reports, and confirms the corresponding CSI-RS configuration identifier of CSI-RS port to the UE distribution according to the CSI-RS received power that receives; The base station is through Radio Resource control (Radio Resource Control; Abbreviate as: RRC) signaling sends to UE with the CSI-RS configuration identifier.For example: for the UE under the Rel-10/11 system, the transmission point that corresponding UE is best can be confirmed through disposing the received power that this part UE reports CSI-RS in the base station, and the base station CSI-RS port that best transmission point is corresponding passes through the corresponding UE of RRC signaling.In the process of notice UE, the base station adopts the CSI-RS configuration identifier (for example adopting 0) of sub-district ID and acquiescence to carry out the generation and the resource mapping of control channel; After the process of notice UE finishes, generation and resource mapping that the base station begins to adopt sub-district ID and the corresponding CSI-RS configuration identifier of each UE to unite carries out control channel.

The control channel launching technique that provides with the foregoing description adapts; One embodiment of the invention provides a kind of control channel method of reseptance; This method comprises: step 201, UE receive the control channel content according to the sub-district ID of sub-district, place and the CSI-RS configuration identifier that UE itself is disposed on running time-frequency resource.Concrete; Generate a plurality of control channel contents according to sub-district ID and CSI-RS configuration identifier when each UE being dispatched in the base station; And a plurality of control channel contents are carried out mapping treatment according to sub-district ID and CSI-RS configuration identifier; After emission on the corresponding running time-frequency resource, UE prepares on corresponding running time-frequency resource, to receive the control channel content.Since the base station according to sub-district ID and CSI-RS configuration identifier with each control channel content map to corresponding running time-frequency resource; Then for the UE side; In order to guarantee on correct running time-frequency resource, to receive the control channel content; Also need calculate corresponding running time-frequency resource itself, and on corresponding running time-frequency resource own, receive the control channel content based on the CSI-RS that sub-district ID is disposed with itself.

The control channel method of reseptance of present embodiment; Match with the control channel launching technique that the foregoing description provides; UE receives control channel according to the CSI-RS configuration identifier that sub-district ID is disposed with itself on corresponding running time-frequency resource, when system requirements is satisfied in the phase mutual interference between each control channel of assurance, realized improving through a plurality of control channels the capacity of sub-district inner control channel; Increase and really to obtain the UE quantity of serving in the sub-district, improve the purpose of the service quality of sub-district.

Wherein, When the control channel content comprises PCFICH; Step 201 is the sub-district ID and the CSI-RS configuration identifier that disposed own of UE according to its sub-district, place, on corresponding running time-frequency resource, receives the control channel content and can adopt following any one execution mode to realize.

Fig. 2 A is the flow chart of the UE side that provides of one embodiment of the invention to first kind of execution mode of PCFICH.Shown in Fig. 2 A, this execution mode comprises: step 201a, UE generate the resource map information according to the sub-district ID of sub-district, place; Step 202a, UE receive PCFICH on the corresponding running time-frequency resource of resource map information; Step 203a, UE carry out descrambling according to sub-district ID and the CSI-RS configuration identifier of itself to PCFICH.In this embodiment, UE adopts prior art to generate the resource map information according to the sub-district ID of sub-district, place, and detects the corresponding running time-frequency resource of resource map information to receive the PCFICH that transmits on this running time-frequency resource; Then, according to sub-district ID and the CSI-RS configuration identifier of itself PCFICH is carried out descrambling simultaneously.This execution mode and base station side adapt to first kind of execution mode of PCFICH; This descrambling process is the anti-process of the scrambling process shown in the formula (1); Those skilled in the art according to the scrambling process shown in the formula (1) can be beyond all doubt this execution mode of release in the descrambling process, so repeat no more at this.

Fig. 2 B is the flow chart of the UE side that provides of one embodiment of the invention to second kind of execution mode of PCFICH.Shown in Fig. 2 B, this execution mode comprises: step 201b, UE generate the resource map information according to sub-district ID and the CSI-RS configuration identifier of itself; Step 202b, UE receive PCFICH on the corresponding running time-frequency resource of resource map information; Step 203b, UE carry out descrambling according to sub-district ID to PCFICH.This execution mode and base station side adapt to second kind of execution mode of PCFICH; Because the base station is carried out the resource mapping according to sub-district ID and CSI-RS configuration identifier to PCFICH simultaneously; So UE generates the resource map information according to sub-district ID and CSI-RS configuration identifier simultaneously, through detecting the corresponding running time-frequency resource of this resource map information to receive PCFICH; Because the base station adopts prior art that PCFICH is carried out scrambling, so in the present embodiment mode, UE adopts prior art that the PCFICH that receives is carried out descrambling after receiving PCFICH.Wherein, The UE lateral root is the anti-process of resource mapping process shown in the formula (6) according to the process of sub-district ID and CSI-RS configuration identifier generation resource map information; Those skilled in the art according to the resource mapping process shown in the formula (6) can be beyond all doubt this execution mode of release generate the process of resource map information, so repeat no more at this.

Fig. 2 C is the flow chart of the UE side that provides of one embodiment of the invention to the third execution mode of PCFICH.Shown in Fig. 2 C, this execution mode comprises: step 201c, UE generate the resource map information according to the sub-district ID of sub-district, place and the CSI-RS configuration identifier of itself; Step 202c, UE receive PCFICH on the corresponding running time-frequency resource of resource map information; Step 203c, UE carry out descrambling according to the sub-district ID of sub-district, place and the CSI-RS configuration identifier of itself to PCFICH.This execution mode and base station side adapt to the third execution mode of PCFICH; Because the base station is carried out the resource mapping according to sub-district ID and CSI-RS configuration identifier to PCFICH simultaneously; So UE generates the resource map information according to sub-district ID and CSI-RS configuration identifier simultaneously, through detecting the corresponding running time-frequency resource of this resource map information to receive PCFICH; Because the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PCFICH simultaneously; So in the present embodiment mode, UE also carries out descrambling according to the sub-district ID and the CSI-RS configuration identifier that belong to the sub-district to the PCFICH that receives after receiving PCFICH simultaneously.UE is the anti-process of the resource mapping process shown in the formula (6) according to the process of sub-district ID and the CSI-RS configuration identifier generation resource map information of itself in this execution mode; UE is the anti-process of scrambling process shown in the formula (1) according to sub-district ID and CSI-RS configuration identifier to the process that PCFICH carries out descrambling simultaneously, so repeat no more at this.

The control channel method of reseptance of above-mentioned each execution mode; Match with the control channel launching technique that above-mentioned execution mode provides; UE receives control channel according to the CSI-RS configuration identifier that sub-district ID is disposed with itself on corresponding running time-frequency resource; When system requirements is satisfied in the phase mutual interference between each control channel of assurance; Realized improving the capacity of sub-district inner control channel, increased and really to obtain the UE quantity of serving in the sub-district, improved the purpose of the service quality of sub-district through a plurality of control channels.

Further; When each control channel content comprises PDCCH; Step 201 is the sub-district ID and the CSI-RS configuration identifier that disposed own of UE according to its sub-district, place, on running time-frequency resource, receives the control channel content and can adopt following any one execution mode to realize.

The UE side generates the resource map information to first kind of execution mode: UE of PDCCH according to sub-district ID, on the corresponding running time-frequency resource of resource map information, receives PDCCH, and according to sub-district ID and the CSI-RS configuration identifier of itself PDCCH is carried out descrambling.This execution mode and base station side adapt to first kind of execution mode of PDCCH; Since the base station adopt prior art promptly only according to the PDCCH cyclic shift of sub-district ID after with scrambling to corresponding running time-frequency resource; So UE also adopts prior art promptly only to generate the resource map information according to sub-district ID, and on the corresponding running time-frequency resource of resource map information, receive PDCCH.Because the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PDCCH simultaneously, so UE carries out descrambling according to sub-district ID and CSI-RS configuration identifier to PDCCH simultaneously after receiving PDCCH.Wherein, the descrambling process in this execution mode is the anti-process of scrambling process shown in the formula (7), and those skilled in the art can realize the descrambling process of this execution mode according to the scrambling process shown in the formula (7), so this descrambling process is no longer detailed.

The UE side is directed against second kind of execution mode: UE of PDCCH according to sub-district ID and CSI-RS configuration identifier, generates the resource map information, on the corresponding running time-frequency resource of resource map information, receives PDCCH, and PDCCH is carried out descrambling.This execution mode and base station side adapt to second kind of execution mode of PDCCH; Since the base station simultaneously according to sub-district ID and the CSI-RS configuration identifier PDCCH cyclic shift after with scrambling to corresponding running time-frequency resource; So UE is the resource of sub-district ID and CSI-RS configuration identifier generation simultaneously map information also, and detect the corresponding running time-frequency resource of resource map information to receive PDCCH.Because the base station adopts prior art promptly only according to sub-district ID PDCCH to be carried out scrambling process, so UE also accordingly carries out scramble process according to sub-district ID to the PDCCH that receives.Wherein, In this execution mode; UE is the anti-process of the cyclic shift process shown in the formula (10) according to the process of sub-district ID and CSI-RS configuration identifier generation resource map information; Those skilled in the art according to the cyclic shift process shown in the formula (10) can skimble-skamble realization this generate the process of resource map information, so repeat no more at this.

The UE side is directed against the third execution mode of PDCCH: UE according to sub-district ID and the CSI-RS configuration identifier of itself; Generate the resource map information; On the corresponding running time-frequency resource of resource map information, receive PDCCH, and PDCCH is carried out descrambling according to sub-district ID and CSI-RS configuration identifier.This execution mode and base station side adapt to the third execution mode of PDCCH; Because the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PDCCH simultaneously; And the PDCCH after the scrambling carried out cyclic shift to corresponding running time-frequency resource; So UE also generates the resource map information according to sub-district ID and CSI-RS configuration identifier simultaneously; On the corresponding running time-frequency resource of resource map information, receive PDCCH, according to sub-district ID and CSI-RS configuration identifier the PDCCH that receives is carried out descrambling simultaneously then.UE is the anti-process of the cyclic shift process shown in the formula (10) according to the process of sub-district ID and CSI-RS configuration identifier generation resource map information in this execution mode, so this process is no longer detailed; Descrambling process in this execution mode is the anti-process of scrambling process shown in the formula (7), so this descrambling process is no longer detailed.

The control channel method of reseptance of above-mentioned each execution mode; Match with the control channel launching technique that above-mentioned execution mode provides; UE receives control channel according to the CSI-RS configuration identifier that sub-district ID is disposed with itself on corresponding running time-frequency resource; When system requirements is satisfied in the phase mutual interference between each control channel of assurance; Realized improving the capacity of sub-district inner control channel, increased and really to obtain the UE quantity of serving in the sub-district, improved the purpose of the service quality of sub-district through a plurality of control channels.

Further; When each control channel content comprises PHICH; Step 201 is the sub-district ID and the CSI-RS configuration identifier that disposed own of UE according to its sub-district, place, on corresponding running time-frequency resource, receives the control channel content and can adopt following any one execution mode to realize.

The UE side generates the resource map information to first kind of execution mode: UE of PHICH according to sub-district ID, on the corresponding running time-frequency resource of resource map information, receives PHICH, and according to sub-district ID and CSI-RS configuration identifier PHICH is carried out descrambling.This execution mode and base station side adapt to first kind of execution mode of PHICH; Because the base station adopts prior art promptly only to be mapped on the corresponding running time-frequency resource according to the PHICH of sub-district ID after with scrambling; So UE also only generates the resource map information according to sub-district ID, and detect the corresponding running time-frequency resource of resource map information to receive PHICH.Because the base station is carried out scrambling according to sub-district ID and CSI-RS configuration identifier to PHICH simultaneously, so UE also simultaneously carries out descrambling according to sub-district ID and CSI-RS configuration identifier to the PHICH that receives.Descrambling process in this execution mode is the anti-process of scrambling process shown in the formula (11); Those skilled in the art can skimble-skamblely know the descrambling process in this execution mode by inference according to the scrambling process shown in the formula (11), so be not described in detail in this this descrambling process.

The UE side is directed against second kind of execution mode: UE of PHICH according to sub-district ID and the CSI-RS configuration identifier of itself, generates the resource map information, on the corresponding running time-frequency resource of resource map information, receives PHICH, and PHICH is carried out descrambling.This execution mode and base station side adapt to second kind of execution mode of PHICH; Because the base station is mapped on the corresponding running time-frequency resource according to sub-district ID and the CSI-RS configuration identifier PHICH after with scrambling simultaneously; So UE also generates the resource map information according to the sub-district ID of sub-district, place and the CSI-RS configuration identifier of itself simultaneously, and detect the corresponding running time-frequency resource of resource map information to receive PHICH.Because the base station adopts prior art promptly only according to sub-district ID PHICH to be carried out scrambling, so UE also only carries out descrambling according to sub-district ID to the PHICH that receives.The process that generates the resource map information in this execution mode is the anti-process of resource mapping process shown in the formula (13); Those skilled in the art can realize in this execution mode generating the process of resource map information according to formula (13), so this resource map information generative process no longer is detailed.

The UE side is directed against the third execution mode of PHICH: UE according to sub-district ID and the CSI-RS configuration identifier of itself; Generate the resource map information; On the corresponding running time-frequency resource of resource map information, receive PHICH, and PHICH is carried out descrambling according to sub-district ID and CSI-RS configuration identifier.This execution mode and base station side adapt to the third execution mode of PHICH; Because the base station is carried out spread spectrum and scrambling according to sub-district ID and CSI-RS configuration identifier to PHICH simultaneously; And be mapped on the corresponding running time-frequency resource simultaneously according to sub-district ID and the CSI-RS configuration identifier PHICH after with spectrum-spreading and scrambling; So UE also generates the resource map information according to sub-district ID and CSI-RS configuration identifier simultaneously, and detect the corresponding running time-frequency resource of resource map information to receive PHICH; Simultaneously the PHICH that receives is carried out descrambling and despreading according to sub-district ID and CSI-RS configuration identifier.The process that generates the resource map information in this execution mode is the anti-process of resource mapping process shown in the formula (13), and descrambling in this execution mode and despreading process are the anti-processes of spread spectrum shown in the formula (11) and descrambling process.

The control channel method of reseptance of above-mentioned each execution mode; Match with the control channel launching technique that above-mentioned execution mode provides; UE receives control channel according to the CSI-RS configuration identifier that sub-district ID is disposed with itself on corresponding running time-frequency resource; When system requirements is satisfied in the phase mutual interference between each control channel of assurance; Realized improving the capacity of sub-district inner control channel, increased and really to obtain the UE quantity of serving in the sub-district, improved the purpose of the service quality of sub-district through a plurality of control channels.

In the embodiment or execution mode of above-mentioned control channel method of reseptance; Step 201 be UE according to sub-district ID and CSI-RS configuration identifier, also comprise before on corresponding running time-frequency resource, receiving the control channel content: step 200, UE obtain the CSI-RS configuration identifier of itself.A kind of mode of the CSI-RS of obtaining configuration identifier is: UE directly obtains pre-configured CSI-RS configuration identifier.Be UE directly according to the CSI-RS configuration identifier of sub-district ID and acquiescence, on corresponding running time-frequency resource, receive the control channel content.This execution mode is generally used for the Rel-8/9 system and does not also dispose the UE under the Rel-10/11 system of CSI-RS port.

The mode that another kind obtains CSI-RS is: UE reports the CSI-RS received power according to the configuration of base station to the base station, then, receives the RRC signaling that the base station is returned according to the CSI-RS received power, from this RRC signaling, obtains the CSI-RS configuration identifier.Concrete, after the base station receives the CSI-RS received power, confirm the best transmission point of this UE, will transmit a little corresponding CSI-RS port assignment then and give this UE, and the CSI-RS configuration identifier that this CSI-RS port is corresponding sends to UE through the RRC signaling.Wherein, Before UE receives the RRC instruction and obtains the CSI-RS configuration identifier; The default value of employing CSI-RS configuration identifier carries out the generation and the scramble process of resource map information; After receiving the RRC instruction and obtaining the CSI-RS configuration identifier, adopt the CSI-RS configuration identifier that obtains to carry out the generation and the scramble process of resource map information.This execution mode is generally used for the UE under the Rel-10/11 system.

Wherein, In order to guarantee that above-mentioned UE can correctly receive the control corresponding channel content; One embodiment of the invention provides a kind of reference signal launching technique; This method comprises: step 301, according to sub-district ID be the CSI-RS configuration identifier that UE disposed in the sub-district, emission cell specific reference signal CRS sequence on running time-frequency resource.This CRS sequence receives and demodulation PCFICH in order to auxiliary UE.

Because the base station generates PCFICH according to sub-district ID and CSI-RS configuration identifier simultaneously, therefore, for same sub-district, can have a plurality of PCFICH.And in the LTE system; The demodulation of control channel PCFICH is based on the CRS sequence; Therefore; The base station of present embodiment is when generating a plurality of PCFICH, and the CRS sequence of each PCFICH of demodulation being used according to sub-district ID and CSI-RS configuration identifier was simultaneously also launched in emission PCFICH (promptly in the emission control channel content) time, to guarantee to be in the PCFICH that different UEs in the different transmission point coverages can accurately receive correspondence.

The process of base station CRS mainly is to generate the CRS sequence, and the process that the CRS sequence cyclic shift is launched to the corresponding running time-frequency resource.Based on this, step 301 can adopt following any one execution mode to realize.

The base station side that Fig. 3 A is depicted as one embodiment of the invention to be provided is directed against the flow chart of first kind of execution mode of CRS sequence.Shown in Fig. 3 A, this execution mode comprises: step 301a, base station generate the CRS sequence according to sub-district ID and CSI-RS configuration identifier; The cyclic shift processing is carried out to the CRS sequence in step 302a, base station, and the cyclic shift process result is launched on running time-frequency resource.In this embodiment, the base station generates the CRS sequence according to sub-district ID and CSI-RS configuration identifier simultaneously, wherein, a plurality of CRS sequences will be arranged for same sub-district; Adopt the prior art scheme that the CRS sequence that is generated is carried out cyclic shift then, the CRS sequence is mapped on the corresponding running time-frequency resource launches.Concrete, the base station can generate the CRS sequence according to formula (14).

$r_{1,n_s}\left(m\right)=\frac{1}{\sqrt{2}}(1-2\&times;c4\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\&times;c4(2m+1))---\left(14\right)$

Wherein, Be n _sCRS sequence on the individual time slot; C4 is a random sequence, and the initial value of random sequence c4 is determined according to sub-district ID and CSI-RS configuration identifier,

Be the maximum downlink bandwidth, i.e. maximum resource number of blocks on the down link.

Wherein, the base station specifically can adopt formula (15), formula (16) or formula (17) to confirm the initial value c of random sequence c4 _4init

$c_{4\mathrm{init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;(N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+1)+2\&times;N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}}---\left(15\right)$

$c_{4\mathrm{init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\&times;(N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+N_{\mathrm{CP}}---\left(16\right)$

$c_{4\mathrm{init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;(N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+1)+2\&times;(N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+N_{\mathrm{CP}}---\left(17\right)$

Wherein, N _CpBe the Cyclic Prefix factor of influence, when adopting CP, N _CpBe 1, when adopting expansion CP, N _CpBe 0.

In this execution mode; The base station is not limited to shown in above-mentioned formula (15), (16) or (17) according to the initial value of sub-district ID and the determined random sequence c4 of CSI-RS configuration identifier; For example in above-mentioned each formula except adding the CSI-RS configuration identifier, can also be to deduct the CSI-RS configuration identifier.As long as the initial value of random sequence c4 is to be the basis with the existing formula that calculates the initial value of random sequence c4, after having considered the CSI-RSI configuration identifier, calculated, all be applicable to present embodiment.Be position and the mode that the CSI-RS configuration identifier occurs in the formula of the initial value of existing calculating random sequence c4, present embodiment is not all done qualification.

The base station side that Fig. 3 B is depicted as one embodiment of the invention to be provided is directed against the flow chart of second kind of execution mode of CRS sequence.Shown in Fig. 3 B, this execution mode comprises: step 301b, base station generate the CRS sequence; In this step, the base station adopts prior art promptly only to confirm as the CRS sequence quantity that a sub-district generates according to this parameter of sub-district ID, also is a sub-district and generates a CRS sequence.Step 302b, base station are carried out the cyclic shift processing according to sub-district ID and CSI-RS configuration identifier to the CRS sequence, and the cyclic shift process result is launched on running time-frequency resource.In this embodiment; The base station can adopt prior art to generate the CRS sequence; Be that a plurality of PCFICH generate same CRS sequence only promptly according to sub-district ID; Simultaneously according to sub-district ID and CSI-RS configuration identifier the CRS sequence is carried out cyclic shift then, the CRS sequence after cyclic shift is handled is with mutually orthogonal, and different CRS sequences will be assigned on the different running time-frequency resources; So just that each PCFICH is corresponding CRS sequence is corresponding to different running time-frequency resources; Realization reduces the interference between the corresponding CRS sequence of each PCFICH with the interference randomization between the CRS sequence of each PCFICH correspondence, thereby guarantees that UE can correctly receive the successful demodulation PCFICH of corresponding C RS sequence.

Concrete, cyclic shift can be carried out to the CRS sequence according to formula (18) in the base station.

k＝6m+(v+v _shift)mod6 (18)

Wherein, k is the position of CRS sequence on frequency domain after the cyclic shift; V is a variable,

corresponding with the symbol of above-mentioned

.

For example: the individual antenna port of p (p=0,1,2,3) with sub-district with 4 antenna ports is an example, the n on p antenna port _sSymbol after the individual time slot cocycle displacement

Wherein, footnote k is shown in formula (18).If p = 0 or 1, l is 0 or

if p = 2 or 3, l is 1; with the formula is

and

$v=\left\{\begin{array}{cc}0& \mathrm{ifp}=0\mathrm{and}1=0\\ 3& \mathrm{ifp}=0\mathrm{and}1\&NotEqual;0\\ 3& \mathrm{ifp}=1\mathrm{and}1=0\\ 0& \mathrm{ifp}=1\mathrm{and}1\&NotEqual;0\\ 3\left(n_s\mathrm{mod}2\right)& \mathrm{ifp}=2\\ 3+3\left(n_s\mathrm{mod}2\right)& \mathrm{ifp}=3\end{array}\right..$

Visible by above-mentioned formula; The base station is carried out cyclic shift according to sub-district ID and CSI-RS configuration identifier to the CRS sequence simultaneously; Can same CRS sequence be mapped on the different running time-frequency resources like this and launch; Make the CRS sequence corresponding one by one with a plurality of PCFICH, corresponding PCFICH lays the first stone for the UE right demodulation.

Fig. 3 C is the flow chart of the base station side that provides of one embodiment of the invention to the third execution mode of CRS sequence.Shown in Fig. 3 C, this execution mode comprises: step 301c, base station generate the CRS sequence according to sub-district ID and CSI-RS configuration identifier; Handle the CRS sequence cyclic shift according to sub-district ID and CSI-RS configuration identifier step 302c, base station, and the cyclic shift process result is launched on running time-frequency resource.In this embodiment; The base station simultaneously generates a plurality of and PCFICH CRS sequence one to one according to sub-district ID and CSI-RS configuration identifier, and the while is mapped to a plurality of CRS sequences respectively on the different running time-frequency resources with the CSI-RS configuration identifier according to sub-district ID and launches.In this execution mode; The base station can adopt formula (14) and formula (18) to generate the CRS sequence and the CRS sequence is carried out cyclic shift respectively; Because the running time-frequency resource corresponding different according to the result of different districts ID and CSI-RS configuration identifier cyclic shift; Therefore, can different CRS sequences be launched on different running time-frequency resources.

This execution mode is through generating a plurality of CRS sequences and a plurality of CRS sequences being mapped to respectively on the different running time-frequency resources, and the interference randomization between the CRS sequence of further each PCFICH of demodulation being used has reduced the interference between each CRS sequence.

Above-mentioned each execution mode; Or through generating a plurality of and PCFICH CRS sequence one to one; Perhaps through the CRS cyclic shift is launched to different running time-frequency resources; Perhaps generate simultaneously a plurality of CRS sequences and with a plurality of CRS sequences respectively cyclic shift to different running time-frequency resources, launch, guarantee that the different UEs in the different transmission point coverages can correctly receive and demodulate PCFICH, for laying the foundation through generating the capacity that a plurality of control channels improve the control channel of same sub-district.

Adapt with the embodiment of above-mentioned reference signal launching technique; The embodiment of the invention provides a kind of reference signal receiving method; This method comprises: step 401, UE receive the CRS sequence according to the cell ID of sub-district, place and the CSI-RS configuration identifier that UE itself is disposed on running time-frequency resource.

The process that the UE side joint is received the CRS sequence comprises that mainly UE generates the resource map information; On the corresponding running time-frequency resource of resource map information, receive the CRS sequence; And generate with reference to the CRS sequence, then through carry out the process of channel estimating with reference to CRS sequence and the CRS sequence that receives.Based on this, any execution mode below the step 401 of present embodiment can adopt is realized.

Fig. 4 A is the flow chart of the UE side that provides of one embodiment of the invention to first kind of execution mode of CRS sequence.Shown in Fig. 4 A, this execution mode comprises: step 401a, UE generate with reference to the CRS sequence according to the sub-district ID and the CSI-RS configuration identifier of itself of sub-district, place; Step 402a, UE generate the resource map information according to sub-district ID; Step 403a, UE receive the CRS sequence on the corresponding running time-frequency resource of resource map information; Step 404a, UE are according to carrying out channel estimating with reference to CRS sequence and the CRS sequence that receives.This execution mode and base station adapt to first kind of execution mode of CRS sequence; Because adopting prior art promptly only according to sub-district ID a plurality of CRS sequences of same sub-district to be mapped to respectively on the identical running time-frequency resource, the base station launches; Event UE only needs calculate the resource map information according to the sub-district ID of sub-district, place, and gets final product in the corresponding running time-frequency resource reception CRS sequence of resource map information.Because the base station generates a plurality of CRS sequences according to sub-district ID and CSI-RS configuration identifier simultaneously; So UE need generate with reference to the CRS sequence according to the sub-district ID and the CSI-RS configuration identifier of itself of sub-district, place; To mate with the CRS sequence that receives; Obtain correct CRS sequence, and carry out channel estimating.

Wherein, UE generates with reference to the process of the process of CRS sequence and base station generation CRS sequence similar, can generate according to formula (14), repeats no more at this.

Fig. 4 B is the flow chart of the UE side that provides of one embodiment of the invention to second kind of execution mode of CRS sequence.Shown in Fig. 4 B, this execution mode comprises: step 401b, UE generate with reference to the CRS sequence according to the sub-district ID of sub-district, place; Step 402b, UE generate the resource map information according to sub-district ID and the CSI-RS configuration identifier of itself; Step 403b, UE receive the CRS sequence on the corresponding running time-frequency resource of resource map information; Step 404b, UE are according to carrying out channel estimating with reference to CRS sequence and the CRS sequence that receives.This execution mode and base station side adapt to second kind of execution mode of CRS sequence, because the base station only generates the CRS sequence according to sub-district ID, get final product with reference to the CRS sequence so UE also only need generate according to the sub-district ID of sub-district, place.Because launch same CRS sequence cyclic shift with the CSI-RS configuration identifier according to sub-district ID simultaneously the base station to different running time-frequency resources; So UE needs to generate the resource map information with reception CRS sequence on corresponding running time-frequency resource according to sub-district ID that belongs to the sub-district and the CSI-RS configuration identifier of itself simultaneously, and carries out channel estimating according to the CRS sequence with reference to the CRS sequence.

Wherein, the process that UE generates the resource map information is the anti-process of the cyclic shift process shown in the formula (18), repeats no more at this.

Fig. 4 C is the flow chart of the UE side that provides of one embodiment of the invention to the third execution mode of CRS sequence.Shown in Fig. 4 C, this execution mode comprises: step 401c, UE generate with reference to the CRS sequence according to the sub-district ID and the CSI-RS configuration identifier of itself of sub-district, place; Step 402c, UE generate the resource map information according to sub-district ID and the CSI-RS configuration identifier of itself; Step 403c, UE receive the CRS sequence on the corresponding running time-frequency resource of resource map information; Step 404c, UE are according to carrying out channel estimating with reference to CRS sequence and the CRS sequence that receives.This execution mode and base station side adapt to the third execution mode of CRS sequence.UE is simultaneously according to sub-district ID with the CSI-RS configuration identifier of itself generates the resource map information and with reference to the CRS sequence; Guarantee on correct running time-frequency resource, to receive corresponding C RS sequence, adopt simultaneously accordingly and carry out channel estimating with reference to CRS sequence and the CRS sequence that receives.

In above-mentioned each by way of example; UE adopts the processing mode that adapts with the base station, guarantees correctly to carry out channel estimating, and corresponding PCFICH lays the foundation for right demodulation; Realized through generating the purpose that a plurality of control channels improve the capacity of sub-district The whole control channel for same sub-district; Increased and really to have obtained the UE quantity of serving in the sub-district, improved the service quality of sub-district, guaranteed that simultaneously system requirements is satisfied in the interference between each control channel in the sub-district.

Fig. 5 A is a kind of structural representation of the base station that provides of one embodiment of the invention.Shown in Fig. 5 A, the base station of present embodiment comprises: channel generation module 21 and mapping transmitter module 22.

Concrete, channel generation module 21, be used to generate with sub-district ID and sub-district in the corresponding control channel content of CSI-RS configuration identifier that UE disposed, and the control channel content offered shine upon transmitter module 22.Mapping transmitter module 22 is connected with channel generation module 21, is used for according to sub-district ID and CSI-RS configuration identifier the control channel content map being launched on the time-frequency resource.

Each functional module in the present embodiment base station can be used for carrying out the flow process of above-mentioned control channel launching technique embodiment, and its concrete operation principle repeats no more, and sees the description of method embodiment for details.Channel generation module 21 can be a processor; Mapping transmitter module 22 can be a port.

The base station of present embodiment; According to the CSI-RS configuration identifier that UE disposed in sub-district ID and the sub-district,, and a plurality of control channel contents are launched simultaneously through corresponding running time-frequency resource for same sub-district generates a plurality of control channel contents; Improved the capacity of sub-district inner control channel through a plurality of control channel contents; Improved the quantity of the UE that can really obtain in the sub-district serving, improved the service performance of sub-district, adapted with the requirement of spaced antenna configuration mode.

Further, shown in Fig. 5 B, mapping transmitter module 22 can comprise following any functional unit or its combination in the present embodiment: the first mapping transmitter unit 221, second shines upon single the 222 and the 3rd mapping transmitter unit 223 of emission.It can be respectively interface unit that the first mapping transmitter unit 221, second shines upon single the 222 and the 3rd mapping transmitter unit 223 of emission.

When each control channel content comprised PCFICH, mapping transmitter module 22 was handled through 221 couples of PCFICH of the first mapping transmitter unit.Concrete, the first mapping transmitter unit 221 carries out scrambling according to sub-district ID and CSI-RS configuration identifier to PCFICH, the PCFICH after the scrambling is mapped on the running time-frequency resource launches; Perhaps, 221 couples of PCFICH of the first mapping transmitter unit carry out scrambling, the PCFICH after the scrambling is mapped on the running time-frequency resource corresponding with sub-district ID and CSI-RS configuration identifier launches; Perhaps, the first mapping transmitter unit 221 carries out scrambling according to sub-district ID and CSI-RS configuration identifier to PCFICH, the PCFICH after the scrambling is mapped on the running time-frequency resource corresponding with sub-district ID and CSI-RS configuration identifier launches then.

More concrete, the first mapping transmitter unit 221 is realized according to sub-district ID and CSI-RS configuration identifier PCFICH being carried out scrambling through formula (1); And the first mapping transmitter unit 221 can be according to the initial value of random sequence c1 in formula (2), (3) or (4) computing formula (1).

More concrete, the PCFICH after first mapping transmitter unit 221 pairs of scramblings modulates, after layer mapping and the precoding, obtain the sequence after the processing; After sequence after will handling is divided into four groups of subsequences, according to formula (6) four groups of subsequences is mapped on the corresponding resource element group and launches.

When each control channel content comprised PDCCH, mapping transmitter module 22 was handled through 222 couples of PDCCH of the second mapping transmitter unit.Concrete, the second mapping transmitter unit 222 carries out scrambling according to sub-district ID and CSI-RS configuration identifier to PDCCH, the PDCCH after the scrambling is carried out cyclic shift handle, and the cyclic shift process result is launched on running time-frequency resource; Perhaps, second mapping transmitter unit 222 couples of PDCCH carry out scrambling, and the PDCCH after to scrambling carries out the cyclic shift processing according to sub-district ID and CSI-RS configuration identifier, and the cyclic shift process result is launched on running time-frequency resource; Perhaps; The second mapping transmitter unit 222 carries out scrambling according to sub-district ID and CSI-RS configuration identifier to PDCCH; Carry out cyclic shift according to sub-district ID and the CSI-RS configuration identifier PDCCH after to scrambling and handle, the cyclic shift process result is launched on running time-frequency resource.

More concrete, the second mapping transmitter unit 222 is realized according to sub-district ID and CSI-RS configuration identifier PDCCH being carried out scrambling through formula (7); And the second mapping transmitter unit 222 can be according to the initial value of random sequence c2 in formula (8) or (9) computing formula (7).

More concrete, the second mapping transmitter unit 222 is through formula (10), realizes carrying out the cyclic shift processing according to sub-district ID and the CSI-RS configuration identifier PDCCH after to scrambling, and launches.

When each control channel content comprised PHICH, mapping transmitter module 22 was handled through 223 couples of PHICH of the 3rd mapping transmitter unit.Concrete, the 3rd mapping transmitter unit 223 carries out spectrum-spreading and scrambling according to sub-district ID and CSI-RS configuration identifier to PHICH, the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource launches; Perhaps, 223 couples of PHICH of the 3rd mapping transmitter unit carry out spectrum-spreading and scrambling, the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource corresponding with sub-district ID and CSI-RS configuration identifier launches; Perhaps, the 3rd mapping transmitter unit 223 carries out spectrum-spreading and scrambling according to sub-district ID and CSI-RS configuration identifier to PHICH, the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource corresponding with sub-district ID and CSI-RS configuration identifier launches.

More concrete, the 3rd mapping transmitter unit 223 can pass through formula (11), realizes according to sub-district ID and CSI-RS configuration identifier PHICH being carried out spectrum-spreading and scrambling; And initial value through random sequence c3 in formula (12) computing formula (11).

More concrete, the 3rd mapping transmitter unit 223 can pass through formula (13), and realization is mapped on the corresponding resource element group according to sub-district ID and the CSI-RS configuration identifier PHICH after with spectrum-spreading and scrambling launches, and launches.

Above-mentioned each formula can repeat no more at this referring to the description among the above-mentioned control channel launching technique embodiment.And the concrete operation principle of each functional unit also repeats no more, and sees the description among the method embodiment for details.

Further, the base station of present embodiment also comprises: first acquisition module 23.This first acquisition module 23 is used to obtain pre-configured CSI-RS configuration identifier; Perhaps, be used for the CSI-RS received power that reports according to UE, confirm the corresponding CSI-RS configuration identifier of CSI-RS port, and the CSI-RS configuration identifier is sent to UE through the RRC signaling to the UE configuration.

The base station of present embodiment realizes according to sub-district ID and CSI-RS configuration identifier being that same sub-district generates a plurality of control channel contents through the above-mentioned functions module; And on corresponding running time-frequency resource, launch; Solved under the spaced antenna configuration mode and to have caused really obtaining in the sub-district UE limited amount of serving because of the control channel capacity is limited; The problem that spaced antenna configuration mode advantage can't be brought into play has improved the service performance of sub-district.

Adapt with above-mentioned base station, one embodiment of the invention provides a kind of UE, and this UE comprises: first generates receiver module.Concrete, this first generation receiver module is used for according to the sub-district ID of sub-district, place and is the CSI-RS configuration identifier that this UE disposed, and on running time-frequency resource, receives the control channel content.

Further, as shown in Figure 6, present embodiment first generates receiver module 31 and comprises following any functional unit or its combination: first generates receiving element 311, second generates receiving element 312 and the 3rd generation receiving element 313.The first generation receiving element 311, second generates receiving element 312 and the 3rd generation receiving element 313 can be respectively different processor unit.

When each control channel content comprised PCFICH, first generates receiver module 31 handled through 311 couples of PCFICH of the first generation receiving element.Concrete, first generates receiving element 311 generates the resource map information according to sub-district ID, on the corresponding running time-frequency resource of resource map information, receives PCFICH, and according to sub-district ID and CSI-RS configuration identifier PCFICH is carried out descrambling; Perhaps, first generates receiving element 311 according to sub-district ID and CSI-RS configuration identifier, generates the resource map information, on the corresponding running time-frequency resource of resource map information, receives PCFICH, and PCFICH is carried out descrambling; Perhaps, first generates receiving element 311 according to sub-district ID and CSI-RS configuration identifier, generates the resource map information, on the corresponding running time-frequency resource of resource map information, receives PCFICH, and according to sub-district ID and CSI-RS configuration identifier PCFICH is carried out descrambling.

When each control channel content comprised PDCCH, first generates receiver module 31 handled through 312 couples of PDCCH of the second generation receiving element.Concrete, second generates receiving element 312 generates the resource map information according to sub-district ID, on the corresponding running time-frequency resource of source map information, receives PDCCH, and according to sub-district ID and CSI-RS configuration identifier PDCCH is carried out descrambling; Perhaps, second generates receiving element 312 according to sub-district ID and CSI-RS configuration identifier, generates the resource map information, on the corresponding running time-frequency resource of resource map information, receives PDCCH, and PDCCH is carried out descrambling; Perhaps, second generates receiving element 312 according to sub-district ID and CSI-RS configuration identifier, generates the resource map information, on the corresponding running time-frequency resource of resource map information, receives PDCCH, and according to sub-district ID and CSI-RS configuration identifier PDCCH is carried out descrambling.

When each control channel content comprised PHICH, first generates receiver module 31 handled through 313 couples of PHICH of the 3rd generation receiving element.Concrete, the 3rd generates receiving element 313 generates the resource map information according to sub-district ID, on the corresponding running time-frequency resource of resource map information, receives PHICH, and according to sub-district ID and CSI-RS configuration identifier PHICH is carried out descrambling; Perhaps, the 3rd generates receiving element 313 according to sub-district ID and CSI-RS configuration identifier, generates the resource map information, on the corresponding running time-frequency resource of resource map information, receives PHICH, and PHICH is carried out descrambling; Perhaps, the 3rd generates receiving element 313 according to sub-district ID and CSI-RS configuration identifier, generates the resource map information, on the corresponding running time-frequency resource of resource map information, receives PHICH, and according to sub-district ID and CSI-RS configuration identifier PHICH is carried out descrambling.

Further, the UE of present embodiment also comprises: second acquisition module 32.This second acquisition module 32 is used to obtain pre-configured CSI-RS configuration identifier; Perhaps, be used for reporting the CSI-RS received power, and receive the RRC signaling that the base station is returned according to the CSI-RS received power, from the RRC signaling, obtain the CSI-RS configuration identifier to the base station.

Above-mentioned each functional unit or the module of present embodiment UE can be used for carrying out the flow process of above-mentioned control channel method of reseptance embodiment, and its concrete operation principle repeats no more, and sees the description of method embodiment for details.

The UE of present embodiment matches with the base station that the foregoing description provides; UE receives control channel according to the CSI-RS configuration identifier that sub-district ID is disposed with itself on corresponding running time-frequency resource; When system requirements is satisfied in the phase mutual interference between each control channel of assurance; Realized improving the capacity of sub-district inner control channel, increased and really to obtain the UE quantity of serving in the sub-district, improved the purpose of the service quality of sub-district through a plurality of control channels.

The structural representation of the base station that Fig. 7 provides for another embodiment of the present invention.As shown in Figure 7, this base station comprises: generate transmitter module 71.This generation transmitter module 71 is used for according to sub-district ID and is the CSI-RS configuration identifier that UE disposed in the sub-district, emission CRS sequence on running time-frequency resource.This CRS sequence is used for auxiliary UE and receives and demodulation PCFICH.

Concrete; Generate transmitter module 71 and can comprise that following any one generates transmitter unit or its combination: first generates transmitter unit 711; Be used for according to sub-district ID and CSI-RS configuration identifier; Generate the CRS sequence, and the CRS sequence is carried out cyclic shift handle, the cyclic shift process result is launched on running time-frequency resource.

Second generates transmitter unit 712, is used to generate the CRS sequence, and according to sub-district ID and CSI-RS configuration identifier the CRS sequence is carried out the cyclic shift processing, and the cyclic shift process result is launched on running time-frequency resource.

The 3rd generates transmitter unit 713, is used for according to sub-district ID and CSI-RS configuration identifier, generates the CRS sequence, and according to sub-district ID and CSI-RS configuration identifier the CRS sequence is carried out the cyclic shift processing, and the cyclic shift process result is launched on running time-frequency resource.

More concrete, the first generation transmitter unit 711 or the 3rd generates transmitter unit 713 can pass through formula (14), realizes generating the CRS sequence according to sub-district ID and CSI-RS configuration identifier; And the first generation transmitter unit 711 or the 3rd generates transmitter unit 713 can be according to the initial value of the random sequence c4 in formula (15), (16) or (17) computing formula (14).

More concrete, the second generation transmitter unit 712 or the 3rd generates transmitter unit 713 can pass through formula (18), realizes according to sub-district ID and CSI-RS configuration identifier CRS being carried out the cyclic shift processing, and launches.

Above-mentioned generation transmitter module 71 or its functional unit can be used for carrying out the flow process of above-mentioned reference signal launching technique embodiment, and its operation principle repeats no more, and see the description of method embodiment for details.

The base station of present embodiment; When generating a plurality of control channel contents according to sub-district ID and CSI-RS configuration identifier; The CRS that will assist UE to receive a plurality of control channel contents according to sub-district ID and CSI-RS configuration identifier is launching on corresponding running time-frequency resource; Guaranteeing that UE is correct receives and demodulation PDFICH, and by through generating the quantity that a plurality of control channel contents improve the UE of sub-district institute ability real service, the service performance of raising sub-district provides condition.

The base station that provides with above-mentioned another embodiment adapts, and another embodiment of the present invention provides a kind of UE.The structural representation of the UE that Fig. 8 provides for another embodiment of the present invention.As shown in Figure 8, this UE comprises: second generates receiver module 81.This second generation receiver module 81 is used for according to the sub-district ID of sub-district, place and is the CSI-RS configuration identifier that UE disposed, and on running time-frequency resource, receives the CRS sequence.

Concrete, this second generation receiver module 81 can comprise that following any one generates receiving element or its combination:

The 4th generates receiving element 811, is used for generating with reference to the CRS sequence according to sub-district ID and CSI-RS configuration identifier; Generate the resource map information according to sub-district ID; On the corresponding running time-frequency resource of resource map information, receive the CRS sequence, and according to carrying out channel estimating with reference to CRS sequence and the CRS sequence that receives.

The 5th generates receiving element 812, is used for generating with reference to the CRS sequence according to sub-district ID; According to sub-district ID and CSI-RS configuration identifier, generate the resource map information; On the corresponding running time-frequency resource of resource map information, receive the CRS sequence, and according to carrying out channel estimating with reference to CRS sequence and the CRS sequence that receives.

The 6th generates receiving element 813, is used for generating with reference to the CRS sequence according to sub-district ID and CSI-RS configuration identifier; According to sub-district ID and CSI-RS configuration identifier, generate the resource map information; On the corresponding running time-frequency resource of resource map information, receive the CRS sequence, and according to carrying out channel estimating with reference to CRS sequence and the CRS sequence that receives.

Among the UE of present embodiment second generation receiver module 81 or its functional unit can be used for carrying out the flow process of above-mentioned reference signal receiving method embodiment, and its operation principle repeats no more, and sees the description of method embodiment for details.

The UE of present embodiment; Match with the UE that the foregoing description provides, UE receives the CRS sequence according to sub-district ID and CSI-RS configuration identifier on corresponding running time-frequency resource, through CRS sequence auxiliary reception and demodulation PCFICH; Guaranteed successfully to receive PCFICH; For the base station can really obtain the UE quantity of serving through generating and launch the capacity that a plurality of control channel contents improve the control channel of sub-district, increasing in the sub-district, the service performance that improves the sub-district provides condition; Adapt with the spaced antenna configuration mode, for the development of spaced antenna configuration mode lays the foundation.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.

Claims (44)

1. a control channel launching technique is characterized in that, comprising:

Generation and cell ID and be subscriber equipment disposed in the sub-district the corresponding control channel content of channel state information reference signals CSI-RS configuration identifier;

According to said cell ID and said CSI-RS configuration identifier, said control channel content map is launched on the time-frequency resource.

2. control channel launching technique according to claim 1 is characterized in that, said control channel content comprises: physical layer control format indicating channel PCFICH;

Said according to said cell ID and said CSI-RS configuration identifier, said control channel content map launched on the time-frequency resource comprise:

According to said cell ID and said CSI-RS configuration identifier said PCFICH is carried out scrambling, the PCFICH after the scrambling is mapped on the running time-frequency resource launches; Perhaps

Said PCFICH is carried out scrambling, the PCFICH after the scrambling is mapped on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier launches; Perhaps

According to said cell ID and said CSI-RS configuration identifier said PCFICH is carried out scrambling, the PCFICH after the scrambling is mapped on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier launches.

3. control channel launching technique according to claim 2 is characterized in that, saidly according to said cell ID and said CSI-RS configuration identifier said PCFICH is carried out scrambling and comprises:

carries out scrambling to said PCFICH according to formula;

Said PCFICH after the scrambling is mapped to launch on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier comprise:

PCFICH to after the said scrambling modulates, layer mapping and precoding, obtains the sequence after the processing;

Said processing back sequence is divided into four groups of subsequences;

According to formula

said four groups of subsequences are mapped on the corresponding resource element group and launch;

Wherein, b is that the inherent said PCFICH of a sub-frame goes up the symbol sebolic addressing of emission;

is the symbol sebolic addressing after the scrambling;

C1 is a random sequence, and the initial value of c1 is determined according to said cell ID and said CSI-RS configuration identifier;

Mod is a modulus operator;

k _jBe the resource element group that j group subsequence is mapped to, j=0 ... 3;

$\stackrel{\&OverBar;}{k}=(N_{\mathrm{sc}}^{\mathrm{RB}}/2)\&times;\left((N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})\mathrm{mod}2N_{\mathrm{RB}}^{\mathrm{DL}}\right);$

is said cell ID;

N _{CSI-RS-Config}Be said CSI-RS configuration identifier;

is downlink resource blocks quantity;

for Resource Block in subcarrier number that frequency domain comprised.

4. control channel launching technique according to claim 3 is characterized in that, confirms that according to said cell ID and said CSI-RS configuration identifier the initial value of random sequence c1 comprises:

According to formula

or

or

confirms the initial value of said c1;

Wherein, c _1initInitial value for said c1;

n _sIt is the time slot position in the radio frames.

5. according to claim 1 or 2 or 3 or 4 described control channel launching techniques, it is characterized in that said control channel content also comprises: physical layer descending control channel PDCCH;

Said according to said cell ID and said CSI-RS configuration identifier, said control channel content map launched on the time-frequency resource comprise:

According to said cell ID and said CSI-RS configuration identifier said PDCCH is carried out scrambling, the PDCCH after the scrambling is carried out cyclic shift handle, the cyclic shift process result is launched on running time-frequency resource; Perhaps

Said PDCCH is carried out scrambling, carry out cyclic shift according to said cell ID and the said CSI-RS configuration identifier PDCCH after to scrambling and handle, the cyclic shift process result is launched on running time-frequency resource; Perhaps

According to said cell ID and said CSI-RS configuration identifier said PDCCH is carried out scrambling; Carry out cyclic shift according to said cell ID and the said CSI-RS configuration identifier PDCCH after to scrambling and handle, the cyclic shift process result is launched on running time-frequency resource.

6. control channel launching technique according to claim 5 is characterized in that, saidly according to said cell ID and said CSI-RS configuration identifier said PDCCH is carried out scrambling and comprises:

carries out scrambling to said PDCCH according to formula;

Saidly carry out cyclic shift according to said cell ID and the said CSI-RS configuration identifier PDCCH after to scrambling and handle and comprise:

carries out cyclic shift to the PDCCH after the said scrambling according to formula;

Wherein, d is that the inherent said PDCCH of a sub-frame goes up the symbol sebolic addressing of emission;

is the symbol sebolic addressing after the scrambling;

C2 is a random sequence, and the initial value of c2 is determined according to said cell ID and said CSI-RS configuration identifier;

Mod is a modulus operator;

w ^(p)(i) be i group burst on p the antenna port of said sub-district, p=0 ... (P-1), P is the antenna port sum of said sub-district;

is p the i group burst after the antenna port cocycle displacement;

M _QuadBe burst group number on p the antenna port, wherein, i=0 ... (M _Quad-1);

is said cell ID;

N _{CSI-RS-Config}Be said CSI-RS configuration identifier.

7. control channel launching technique according to claim 6 is characterized in that, confirms that according to said cell ID and said CSI-RS configuration identifier the initial value of random sequence c2 comprises:

According to formula

or

confirms the initial value of said c2;

Wherein, c _2initBe said initial value;

n _sIt is the time slot position in the radio frames.

8. control channel launching technique according to claim 5 is characterized in that, said control channel content also comprises: physical layer combining retransmission indicating channel PHICH;

Said according to said cell ID and said CSI-RS configuration identifier, said control channel content map launched on the time-frequency resource comprise:

According to said cell ID and said CSI-RS configuration identifier said PHICH is carried out spectrum-spreading and scrambling, the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource launches; Perhaps

Said PHICH is carried out spectrum-spreading and scrambling, the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier launches; Perhaps

According to said cell ID and said CSI-RS configuration identifier said PHICH is carried out spectrum-spreading and scrambling, the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier launches.

9. control channel launching technique according to claim 8 is characterized in that, saidly according to said cell ID and said CSI-RS configuration identifier said PHICH is carried out spectrum-spreading and scrambling and comprises:

carries out spread spectrum and scrambling to said PHICH according to formula;

Said PHICH after the spectrum-spreading and scrambling is mapped to launch on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier comprise:

According to formula

PHICH after the said scrambling is mapped on the corresponding resource element group and launches;

Wherein, e is the symbol sebolic addressing after the spectrum-spreading and scrambling, i=0 ..., M _Symb-1,

Z is the symbol sebolic addressing on the PHICH after the scrambling, M _sSymbolic number for z;

is an orthogonal sequence;

is the spreading factor of PHICH; When adopting regular circulation prefix CP;

is 4; When adopting expansion CP,

is 2;

C3 is a random sequence, and the initial value of c3 is determined according to said cell ID and said CSI-RS configuration identifier;

Mod is a modulus operator;

is on the orthogonal frequency division multiplex OFDM symbol, and all are not assigned to the position in the resource element group of PCFICH;

Be l ' _jOn the individual OFDM symbol, unallocated number of giving the resource element group of PCFICH;

n ₁Be on the 1st the OFDM symbol, unallocated number of giving the resource element group of PCFICH;

M ' is the intermediate variable of said PHICH when doing the resource mapping, and it is since 0, and every circulation primary increases by 1;

is said cell ID;

N _{CSI-RS-Config}Be said CSI-RS configuration identifier.

10. control channel launching technique according to claim 9 is characterized in that, confirms that according to said cell ID and said CSI-RS configuration identifier the initial value of c3 comprises:

Confirm the initial value of said c3 according to formula

;

Wherein, c _3initInitial value for said c3.

11. according to claim 1 or 2 or 3 said control channel launching techniques; It is characterized in that; Said generation and cell ID and for before the corresponding control channel content of subscriber equipment disposed in the sub-district channel state information reference signals CSI-RS configuration identifier, said method also comprises:

Obtain pre-configured said CSI-RS configuration identifier; Perhaps

According to said user equipment to report CSI-RS received power, confirm to give the corresponding CSI-RS configuration identifier of CSI-RS port of said user device configuration, and said CSI-RS configuration identifier is sent to said subscriber equipment through the radio resource control RRC signaling.

12. a control channel method of reseptance is characterized in that, comprising:

Subscriber equipment is according to the cell ID that belongs to the sub-district and be the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives the control channel content.

13. control channel method of reseptance according to claim 12 is characterized in that, said control channel content comprises: physical layer control format indicating channel PCFICH;

Said subscriber equipment is according to the cell ID that belongs to the sub-district and be the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives the control channel content and comprises:

Generate the resource map information according to said cell ID, on the corresponding running time-frequency resource of said resource map information, receive said PCFICH, and said PCFICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps

According to said cell ID and said CSI-RS configuration identifier, generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PCFICH, and said PCFICH is carried out descrambling; Perhaps

According to said cell ID and said CSI-RS configuration identifier; Generate the resource map information; On the corresponding running time-frequency resource of said resource map information, receive said PCFICH, and said PCFICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier.

14., it is characterized in that said control channel content also comprises: physical layer descending control channel PDCCH according to claim 12 or 13 described control channel method of reseptances;

Said subscriber equipment is according to the cell ID that belongs to the sub-district and be the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives the control channel content and also comprises:

Generate the resource map information according to said cell ID, on the corresponding running time-frequency resource of said resource map information, receive said PDCCH, and said PDCCH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps

According to said cell ID and said CSI-RS configuration identifier, generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PDCCH, and said PDCCH is carried out descrambling; Perhaps

According to said cell ID and said CSI-RS configuration identifier; Generate the resource map information; On the corresponding running time-frequency resource of said resource map information, receive said PDCCH, and said PDCCH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier.

15. control channel method of reseptance according to claim 14 is characterized in that, said control channel content also comprises: physical layer combining retransmission indicating channel PHICH;

Said subscriber equipment is according to the cell ID that belongs to the sub-district and be the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives the control channel content and also comprises:

Generate the resource map information according to said cell ID, on the corresponding running time-frequency resource of said resource map information, receive said PHICH, and said PHICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps

According to said cell ID and said CSI-RS configuration identifier, generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PHICH, and said PHICH is carried out descrambling; Perhaps

According to said cell ID and said CSI-RS configuration identifier; Generate the resource map information; On the corresponding running time-frequency resource of said resource map information, receive said PHICH, and said PHICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier.

16. according to claim 12 or 13 described control channel method of reseptances; It is characterized in that; Said subscriber equipment is according to the cell ID of sub-district, place and be channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed; Before receiving the control channel content on the running time-frequency resource, said method also comprises:

Obtain pre-configured said CSI-RS configuration identifier; Perhaps

Report the CSI-RS received power to the base station, and receive the radio resource control RRC signaling that said base station is returned according to said CSI-RS received power, from said RRC signaling, obtain said CSI-RS configuration identifier.

17. a reference signal launching technique is characterized in that, comprising:

According to cell ID be the channel state information reference signals CSI-RS configuration identifier that subscriber equipment disposed in the sub-district, emission cell specific reference signal CRS sequence on running time-frequency resource.

18. reference signal launching technique according to claim 17; It is characterized in that; Said according to the channel state information reference signals CSI-RS configuration identifier that subscriber equipment disposed in cell ID and the sub-district, emission cell specific reference signal CRS sequence comprises on running time-frequency resource:

According to said cell ID and said CSI-RS configuration identifier, generate said CRS sequence, and said CRS sequence is carried out cyclic shift handle, the cyclic shift process result is launched on running time-frequency resource; Perhaps

Generate said CRS sequence, and said CRS sequence is carried out the cyclic shift processing, said cyclic shift process result is launched on running time-frequency resource according to said cell ID and said CSI-RS configuration identifier; Perhaps

According to said cell ID and said CSI-RS configuration identifier, generate said CRS sequence, and said CRS sequence cyclic shift is handled according to said cell ID and said CSI-RS configuration identifier, the cyclic shift process result is launched on running time-frequency resource.

19. reference signal launching technique according to claim 18 is characterized in that, the said generation said CRS sequence corresponding with said cell ID and said CSI-RS configuration identifier comprises:

Generate said CRS sequence according to formula ;

Saidly according to said cell ID and said CSI-RS configuration identifier said CRS sequence is carried out cyclic shift and handles, the cyclic shift process result is launched on running time-frequency resource comprise:

According to formula k=6m+ (v+v _Shift) mod6, said CRS sequence is carried out cyclic shift;

Wherein,

Be n _sCRS sequence on the individual time slot;

C4 is a random sequence; The initial value of c4 is determined according to said cell ID and said CSI-RS configuration identifier,

be the maximum downlink bandwidth;

K is the position of said CRS sequence on frequency domain after the cyclic shift;

V is a variable, $v_{\mathrm{Shift}}=(N_{\mathrm{ID}}^{\mathrm{Cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})\mathrm{Mod}6;$

Mod representes modulus operator;

is said cell ID;

N _{CSI-RS-Config}Be said CSI-RS configuration identifier.

20. reference signal launching technique according to claim 19 is characterized in that, confirms that according to said cell ID and said CSI-RS configuration identifier the initial value of c4 comprises:

According to formula $c_{4\mathrm{Init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;(N_{\mathrm{ID}}^{\mathrm{Cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+1)+2\&times;N_{\mathrm{ID}}^{\mathrm{Cell}}+N_{\mathrm{CP}},$ Or

$c_{4\mathrm{Init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;N_{\mathrm{ID}}^{\mathrm{Cell}}+1)+2\&times;(N_{\mathrm{ID}}^{\mathrm{Cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+N_{\mathrm{CP}},$ Or

$c_{4\mathrm{init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;(N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+1)+2\&times;(N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+N_{\mathrm{CP}},$

Confirm the initial value of said c4,

Wherein, c _4initInitial value for said c4;

N _CPBe the Cyclic Prefix factor of influence, when adopting regular circulation prefix CP, N _CPBe 1, when adopting expansion CP, N _CPBe 0.

21. a reference signal receiving method is characterized in that, comprising:

Subscriber equipment is according to the cell ID that belongs to the sub-district and be the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives cell specific reference signal CRS sequence.

22. reference signal receiving method according to claim 21; It is characterized in that; Said subscriber equipment is according to the cell ID that belongs to the sub-district and be the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives cell specific reference signal CRS sequence and comprises:

Generate with reference to the CRS sequence according to said cell ID and said CSI-RS configuration identifier; Generate the resource map information according to said cell ID; On the corresponding running time-frequency resource of said resource map information, receive said CRS sequence, and carry out channel estimating with reference to CRS sequence and the said CRS sequence that receives according to said; Perhaps

Generate with reference to the CRS sequence according to said cell ID; According to said cell ID and said CSI-RS configuration identifier, generate the resource map information; On the corresponding running time-frequency resource of said resource map information, receive said CRS sequence, and carry out channel estimating with reference to CRS sequence and the said CRS sequence that receives according to said; Perhaps

Generate with reference to the CRS sequence according to said cell ID and said CSI-RS configuration identifier; According to said cell ID and said CSI-RS configuration identifier, generate the resource map information; On the corresponding running time-frequency resource of said resource map information, receive said CRS sequence, and carry out channel estimating with reference to CRS sequence and the said CRS sequence that receives according to said.

23. a base station is characterized in that, comprising:

The channel generation module is used to generate with cell ID and is subscriber equipment disposed in the sub-district the corresponding control channel content of channel state information reference signals CSI-RS configuration identifier;

The mapping transmitter module is used for according to said cell ID and said CSI-RS configuration identifier said control channel content map being launched on the time-frequency resource.

24. base station according to claim 23 is characterized in that, said control channel content comprises: physical layer control format indicating channel PCFICH;

Said mapping transmitter module comprises: the first mapping transmitter unit, be used for said PCFICH being carried out scrambling according to said cell ID and said CSI-RS configuration identifier, and the PCFICH after the scrambling is mapped on the running time-frequency resource launches; Perhaps, be used for said PCFICH is carried out scrambling, the PCFICH after the scrambling be mapped on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier launch; Perhaps, be used for said PCFICH being carried out scrambling, the PCFICH after the scrambling be mapped on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier launch according to said cell ID and said CSI-RS configuration identifier.

25. base station according to claim 24; It is characterized in that the said first mapping transmitter unit specifically is used for according to formula

said PCFICH being carried out scrambling;

The said first mapping transmitter unit specifically be used for to the PCFICH after the said scrambling modulate, layer mapping and precoding, obtain the sequence after the processing; After the sequence after the said processing is divided into four groups of subsequences, according to formula said four groups of subsequences is mapped on the corresponding resource element group and launches;

Wherein, b is that the inherent said PCFICH of a sub-frame goes up the symbol sebolic addressing of emission;

is the symbol sebolic addressing after the scrambling;

C1 is a random sequence, and the initial value of c1 is determined according to said cell ID and said CSI-RS configuration identifier;

Mod is a modulus operator;

k _jBe the resource element group that j group subsequence is mapped to, j=0 ... 3;

$\stackrel{\&OverBar;}{k}=(N_{\mathrm{sc}}^{\mathrm{RB}}/2)\&times;\left((N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})\mathrm{mod}2N_{\mathrm{RB}}^{\mathrm{DL}}\right);$

is said cell ID;

N _{CSI-RS-Config}Be said CSI-RS configuration identifier;

is downlink resource blocks quantity;

for Resource Block in subcarrier number that frequency domain comprised.

26. base station according to claim 25 is characterized in that, the said first mapping transmitter unit also is used for:

According to formula

or

or

confirms the initial value of said c1;

Wherein, c _1initInitial value for said c1;

n _sIt is the time slot position in the radio frames.

27., it is characterized in that said control channel content also comprises: physical layer descending control channel PDCCH according to claim 23 or 24 or 25 or 26 described base stations;

Said mapping transmitter module also comprises: the second mapping transmitter unit; Be used for said PDCCH being carried out scrambling according to said cell ID and said CSI-RS configuration identifier; PDCCH after the scrambling is carried out cyclic shift handle, the cyclic shift process result is launched on running time-frequency resource; Perhaps, be used for said PDCCH is carried out scrambling, carry out cyclic shift according to said cell ID and the said CSI-RS configuration identifier PDCCH after to scrambling and handle, the cyclic shift process result is launched on running time-frequency resource; Perhaps; Be used for said PDCCH being carried out scrambling according to said cell ID and said CSI-RS configuration identifier; Carry out cyclic shift according to said cell ID and the said CSI-RS configuration identifier PDCCH after to scrambling and handle, the cyclic shift process result is launched on running time-frequency resource.

28. base station according to claim 27; It is characterized in that the said second mapping transmitter unit specifically is used for according to formula

said PDCCH being carried out scrambling;

The said second mapping transmitter unit specifically is used for according to formula

PDCCH after the said scrambling being carried out cyclic shift;

Wherein, d is that the inherent said PDCCH of a sub-frame goes up the symbol sebolic addressing of emission;

is the symbol sebolic addressing after the scrambling;

C2 is a random sequence, and the initial value of c2 is determined according to said cell ID and said CSI-RS configuration identifier;

Mod is a modulus operator;

w ^(p)(i) be i group burst on p the antenna port of said sub-district, p=0 ... (P-1), P is the antenna port sum of said sub-district;

is p the i group burst after the antenna port cocycle displacement;

M _QuadBe burst group number on p the antenna port, wherein, i=0 ... (M _Quad-1);

is said cell ID;

N _{CSI-RS-Config}Be said CSI-RS configuration identifier.

29. base station according to claim 28; It is characterized in that, said second the mapping transmitter unit also be used for according to formula

or

confirms the initial value of said c2;

Wherein, c _2initInitial value for said c2;

n _sIt is the time slot position in the radio frames.

30. base station according to claim 27 is characterized in that, said control channel content also comprises: physical layer combining retransmission indicating channel PHICH;

Said mapping transmitter module also comprises: the 3rd mapping transmitter unit, be used for said PHICH being carried out spectrum-spreading and scrambling according to said cell ID and said CSI-RS configuration identifier, and the PHICH after the spectrum-spreading and scrambling is mapped on the running time-frequency resource launches; Perhaps, be used for said PHICH is carried out spectrum-spreading and scrambling, the PHICH after the spectrum-spreading and scrambling be mapped on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier launch; Perhaps, be used for said PHICH being carried out spectrum-spreading and scrambling, the PHICH after the spectrum-spreading and scrambling be mapped on the running time-frequency resource corresponding with said cell ID and said CSI-RS configuration identifier launch according to said cell ID and said CSI-RS configuration identifier.

31. base station according to claim 30; It is characterized in that said the 3rd mapping transmitter unit specifically is used for according to formula

said PHICH being carried out spectrum-spreading and scrambling;

Said the 3rd mapping transmitter unit specifically is used for

According to formula

PHICH after the said spectrum-spreading and scrambling is mapped on the corresponding resource element group launches;

Wherein, e is the symbol sebolic addressing after the spectrum-spreading and scrambling, i=0 ..., M _Symb-1,

Z is the symbol sebolic addressing on the PHICH after the scrambling, M _sSymbolic number for z;

is an orthogonal sequence;

is the spreading factor of PHICH; When adopting regular circulation prefix CP;

is 4; When adopting expansion CP,

is 2;

C3 is a random sequence, and the initial value of c3 is determined according to said cell ID and said CSI-RS configuration identifier;

Mod is a modulus operator;

is on the orthogonal frequency division multiplex OFDM symbol, and all are not assigned to the position in the resource element group of PCFICH;

Be l ' _jOn the individual OFDM symbol, unallocated number of giving the resource element group of PCFICH;

n ₁Be on the 1st the OFDM symbol, unallocated number of giving the resource element group of PCFICH;

M ' is the intermediate variable of said PHICH when doing the resource mapping, and it is since 0, and every circulation primary increases by 1;

is said cell ID;

N _{CSI-RS-Config}Be said CSI-RS configuration identifier.

32. base station according to claim 31 is characterized in that, said the 3rd mapping transmitter unit also is used for:

Confirm the initial value of said c3 according to formula

;

Wherein, c _3initInitial value for said c3.

33. according to claim 23 or 24 or 25 described base stations, it is characterized in that, also comprise:

First acquisition module is used to obtain pre-configured said CSI-RS configuration identifier; Perhaps; Be used for CSI-RS received power according to said user equipment to report; Confirm to give the corresponding CSI-RS configuration identifier of CSI-RS port of said user device configuration, and said CSI-RS configuration identifier is sent to said subscriber equipment through the radio resource control RRC signaling.

34. a subscriber equipment is characterized in that, comprising:

First generates receiver module, is used for according to the cell ID of sub-district, place and is the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives the control channel content.

35. subscriber equipment according to claim 34 is characterized in that, said control channel content comprises: physical layer control format indicating channel PCFICH;

Said first generates receiver module comprises that first generates receiving element; Be used for generating the resource map information according to cell ID; On the corresponding running time-frequency resource of said resource map information, receive said PCFICH, and said PCFICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps, be used for, generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PCFICH, and said PCFICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps; Be used for according to said cell ID and said CSI-RS configuration identifier; Generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PCFICH, and said PCFICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier.

36., it is characterized in that said control channel content also comprises according to claim 34 or 35 described subscriber equipmenies: physical layer descending control channel PDCCH;

Said first generates receiver module also comprises: second generates receiving element; Be used for generating the resource map information according to said cell ID; On the corresponding running time-frequency resource of said resource map information, receive said PDCCH, and said PDCCH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps, be used for, generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PDCCH, and said PDCCH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps; Be used for according to said cell ID and said CSI-RS configuration identifier; Generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PDCCH, and said PDCCH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier.

37. subscriber equipment according to claim 36 is characterized in that, said control channel content also comprises: physical layer combining retransmission indicating channel PHICH;

Said first generates receiver module also comprises: the 3rd generates receiving element; Be used for generating the resource map information according to said cell ID; On the corresponding running time-frequency resource of said resource map information, receive said PHICH, and said PHICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps, be used for, generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PHICH, and said PHICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier; Perhaps; Be used for according to said cell ID and said CSI-RS configuration identifier; Generate the resource map information, on the corresponding running time-frequency resource of said resource map information, receive said PHICH, and said PHICH is carried out descrambling according to said cell ID and said CSI-RS configuration identifier.

38. according to claim 34 or 35 described subscriber equipmenies, it is characterized in that, also comprise:

Second acquisition module is used to obtain pre-configured said CSI-RS configuration identifier; Perhaps, be used for reporting the CSI-RS received power, and receive the radio resource control RRC signaling that said base station is returned according to said CSI-RS received power, from said RRC signaling, obtain said CSI-RS configuration identifier to the base station.

39. a base station is characterized in that, comprising:

Generate transmitter module, be used for according to cell ID and be the channel state information reference signals CSI-RS configuration identifier that subscriber equipment disposed in the sub-district, emission cell specific reference signal CRS sequence on running time-frequency resource.

40., it is characterized in that said generation transmitter module comprises that following any one generates transmitter unit or its combination according to the described base station of claim 39:

First generates transmitter unit, is used for generating said CRS sequence according to said cell ID and said CSI-RS configuration identifier, and said CRS sequence is carried out cyclic shift handle, and the cyclic shift process result is launched on running time-frequency resource;

Second generates transmitter unit, is used to generate said CRS sequence, and according to said cell ID and said CSI-RS configuration identifier said CRS sequence is carried out the cyclic shift processing, and the cyclic shift process result is launched on running time-frequency resource;

The 3rd generates transmitter unit; Be used for according to said cell ID and said CSI-RS configuration identifier; Generate said CRS sequence; And according to said cell ID and said CSI-RS configuration identifier said CRS sequence is carried out cyclic shift and handle, the cyclic shift process result is launched on running time-frequency resource.

41. according to the described base station of claim 40; It is characterized in that the said first generation transmitter unit or the said the 3rd generates transmitter unit and specifically is used for generating said CRS sequence according to formula ;

The said second generation transmitter unit or the 3rd generates transmitter unit and specifically uses (the v+v according to formula k=6m+ _Shift) mod6, said CRS is carried out cyclic shift;

Wherein,

Be n _sCRS sequence on the individual time slot;

C4 is a random sequence; The initial value of c4 is determined according to said cell ID and said CSI-RS configuration identifier,

be the maximum downlink bandwidth;

K is the position of said CRS on frequency domain after the cyclic shift;

V is a variable, $v_{\mathrm{Shift}}=(N_{\mathrm{ID}}^{\mathrm{Cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})\mathrm{Mod}6;$

Mod representes modulus operator;

is said cell ID;

N _{CSI-RS-Config}Be said CSI-RS configuration identifier.

42., it is characterized in that the said first generation transmitter unit or the 3rd generates transmitter unit and also is used for according to formula according to the described base station of claim 41

$c_{4\mathrm{Init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;(N_{\mathrm{ID}}^{\mathrm{Cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+1)+2\&times;N_{\mathrm{ID}}^{\mathrm{Cell}}+N_{\mathrm{CP}},$ Or

$c_{4\mathrm{Init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;N_{\mathrm{ID}}^{\mathrm{Cell}}+1)+2\&times;(N_{\mathrm{ID}}^{\mathrm{Cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+N_{\mathrm{CP}},$ Or

$c_{4\mathrm{init}}=2^{10}\&times;(7\&times;(n_s+1)+1+1)\&times;(2\&times;(N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+1)+2\&times;(N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CSI}-\mathrm{RS}-\mathrm{Config}})+N_{\mathrm{CP}},$

Confirm the initial value of said c4,

Wherein, c _4initInitial value for said c4;

N _CPBe the Cyclic Prefix factor of influence, when adopting regular circulation prefix CP, N _CPBe 1, when adopting expansion CP, N _CPBe 0.

43. a subscriber equipment is characterized in that, comprising:

Second generates receiver module, is used for according to the cell ID of sub-district, place and is the channel state information reference signals CSI-RS configuration identifier that said subscriber equipment disposed, and on running time-frequency resource, receives cell specific reference signal CRS sequence.

44., it is characterized in that said second generates receiver module comprises that following any one generates receiving element or its combination according to the described subscriber equipment of claim 43:

The 4th generates receiving element, is used for generating with reference to the CRS sequence according to said cell ID and said CSI-RS configuration identifier; Generate the resource map information according to said cell ID; On the corresponding running time-frequency resource of said resource map information, receive said CRS sequence, and carry out channel estimating with reference to CRS sequence and the said CRS sequence that receives according to said;

The 5th generates receiving element, is used for generating with reference to the CRS sequence according to said cell ID; According to said cell ID and said CSI-RS configuration identifier, generate the resource map information; On the corresponding running time-frequency resource of said resource map information, receive said CRS sequence, and carry out channel estimating with reference to CRS sequence and the said CRS sequence that receives according to said;

The 6th generates receiving element, is used for generating with reference to the CRS sequence according to said cell ID and said CSI-RS configuration identifier; According to said cell ID and said CSI-RS configuration identifier, generate the resource map information; On the corresponding running time-frequency resource of said resource map information, receive said CRS sequence, and carry out channel estimating with reference to CRS sequence and the said CRS sequence that receives according to said.

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