CN101741462A - Method for processing demodulation reference signal dynamic cyclic shift parameters - Google Patents

Abstract

The invention discloses a method for processing demodulation reference signal dynamic cyclic shift parameters, which comprises that: a base station sends a downlink control information format to user equipment, wherein the downlink control information format carries demodulation reference signal DMRS dynamic cyclic shift parameters which are used for indicating a group of DMRS dynamic cyclic shift quantities allocated to uplink component carriers of the user equipment; and the user equipment acquires the group of DMRS dynamic cyclic shift quantities corresponding to the DMRS dynamic cyclic shift parameters. The method reduces signaling overhead and improves efficiency.

Description

The processing method of demodulation reference signal dynamic cyclic shift parameters

Technical field

The present invention relates to the communications field, in particular to a kind of processing method of demodulation reference signal dynamic cyclic shift parameters.

Background technology

Long Term Evolution (Long Term Evolution abbreviates LTE as) system is the essential planning of third generation partnership.When the LTE system adopts regular circulation prefix (Normal CyclicPrefix), time slot comprise 7 length on/descending symbol, when the LTE system adopts extended cyclic prefix (Extended Cyclic Prefix), time slot comprise 6 length on/descending symbol.

Fig. 1 is that the bandwidth according to correlation technique is the schematic diagram of the LTE system physical Resource Block of 5MHz, as shown in Figure 1, a Resource Unit (Resource Element, abbreviate RE as) be a subcarrier in the OFDM symbol, and a downlink resource piece (Resource Block abbreviates RB as) is made of continuous 12 subcarriers and 7 continuous (in the time of extended cyclic prefix being 6) OFDM symbols.A Resource Unit is 180kHz on frequency domain, is a general time slots length on the time domain, when carrying out resource allocation, can be that base unit distributes with the Resource Block.In sub-frame of uplink, Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH) be positioned on two sidebands of whole frequency band, the centre is used for transmitting physical Uplink Shared Channel (PhysicalUplink Shared Channel, PUSCH), this channel is used to carry upstream data.

In LTE system definition following several physical channels:

Physical Broadcast Channel (Physical broadcast channel, abbreviate PBCH as): the information of this channel bearing comprises the downlink bandwidth of the frame number of system, system, the cycle of physical mixed retransfer channel and the parameter N that is used for determining physical mixing retransmission indicating chanel (Physical hybridARQ indicator channel abbreviates PHICH as) channel group number _g∈ 1/6,1/2,1,2}

Physical Downlink Control Channel (Physical downlink control channel abbreviates PDCCH as): be used to carry the uplink and downlink schedule information, and uplink power control information.

Downlink Control Information (Downlink Control Information, abbreviating DCI as) form (format) is divided into following several: DCI format 0,1,1A, 1B, 1C, 1D, 2,2A, 3,3A etc., wherein, format 0 is used to indicate the scheduling of Physical Uplink Shared Channel (Physicaluplink shared channel abbreviates PUSCH as); DCI format 1,1A, 1B, 1C, 1D are used for the different transmission mode of the Physical Downlink Shared Channel (Physical DownlinkShared Channel abbreviates PDSCH as) of single transport piece; DCI format 2,2A are used for the different transmission mode of space division multiplexing; DCI format 3,3A are used for the transmission of the power control instruction of Physical Uplink Control Channel (Physical uplink control channel abbreviates PUCCH as) and PUSCH.

Physical Uplink Shared Channel: be used to carry uplink transmission data.The resource allocation that this channel is relevant, modulation and encoding scheme, the cyclic shift control informations such as (Cyclic shift) of demodulated reference signal (Demodulation ReferenceSignal abbreviates DMRS as) is provided with DCI format 0 by UL grant (uplink authorization).

Physical mixing retransmission indicating chanel (Physical Hybrid ARQ IndicatorChannel abbreviates PHICH as): the ACK/NACK feedback information that is used to carry uplink transmission data.The number of PHICH channel group, duration (duration) determined by the system message among the PBCH of the descending carrier at place, and the time-frequency position of PHICH is by sequence index decision in the group number of antenna configurations, sub-district ID and the PHICH of the number of PHICH channel group, duration, sub-district PBCH and the group.

For frame structure 1, the number N of PHICH group _PHICH ^GroupDetermine by following formula (a):

Formula (a)

N _g{ 1/6,1/2,1,2} is determined by the system message among the PBCH of the descending carrier (Downlink carrier abbreviates DLcarrier as) at place ∈, n _PHICH ^GroupFrom 0 to N _PHICH ^Group-1 numbering;

N _RB ^DLIt is the bandwidth of the descending carrier at PHICH place.

For frame structure 2, the every subframe of number of PHICH group is m _iN _PHICH ^Group, m wherein _iBy following table 1 decision.

Table 1

The PHICH resource is by (n _PHICH ^Group, n _PHICH ^Seq) determine n _PHICH ^GroupBe the group number of PHICH, n _PHICH ^SeqBe the index of orthogonal sequence in the group, determine by following formula (b):

$n_{\mathrm{PHICK}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$ (b)

n _DMRSBe demodulated reference signal (the DemodulationReference Signal of definition among the DCI format 0, abbreviate DMRS as) dynamic cyclic shift parameters, the configuration of this parameter makes between MU-MIMO user in the sub-district has different cyclic shifts, make MU-MIMO user's quadrature in the sub-district, suppress to disturb in the sub-district.The configuration of this parameter is as described in the table 2 of lower end.

Table 2

DMRS dynamic cyclic shift parameters n among the DCI format 0 DMRS (2)	Actual dynamic cyclic shift amount
		??000	??0
??001	??6

DMRS dynamic cyclic shift parameters n among the DCI format 0 DMRS (2)	Actual dynamic cyclic shift amount
		??010	??3
??011	??4
		??100	??2
??101	??8
		??110	??10
??111	??9

N _SF ^PHICHIt is the spreading factor of PHICH modulation;

I _{PRB_RA} ^Lowest_indexIt is the minimum index of the Physical Resource Block (Physical ResourceBlock abbreviates PRB as) of ascending resource distribution;

Up permission single antenna of LTE Release-8 sends.N in the formula (b) _DMRSFor UE, in DCI format 0, only can dispose 1.

The sequences Design of PUSCH DMRS, the time-frequency expansion of DMRS sequence:

$r^{\mathrm{PUSCH}}(m\·M_{\mathrm{sc}}^{\mathrm{RS}}+n)=r_{u,v}^{\left(\mathrm{\α}\right)}\left(n\right)$

m＝0，1

$n=0,...,M_{\mathrm{sc}}^{\mathrm{RS}}-1$

$M_{\mathrm{sc}}^{\mathrm{RS}}=M_{\mathrm{sc}}^{\mathrm{PUSCH}}$

α＝2πn _cs/12

$n_{\mathrm{cs}}=(n_{\mathrm{DMRS}}^{\left(1\right)}+n_{\mathrm{DMRS}}^{\left(2\right)}+n_{\mathrm{PRS}}\left(n_s\right))\mathrm{mod}12$

M=n _sMod2, m=0, the first, the second time slot of 1 respectively corresponding each subframe.Totally 12 kinds of cyclic shift value, PUSCH DMRS bandwidth is identical with the PUSCH bandwidth.

The cyclic shift n of DMRS sequence _Cs

n _CsBy three parameter decisions, specify as follows:

n _DMRS ⁽¹⁾: by higher level parameters decision (3bit), semi-static configuration makes different sub-districts have different cyclic shifts, makes minizone MU-MIMO user's quadrature, suppresses presence of intercell interference.

n _DMRS ⁽²⁾: provide (3bit) (reference table 2) by nearest DCI format 0, dynamic-configuration makes to have different cyclic shifts between the MU-MIMO user in the sub-district, makes MU-MIMO user's quadrature in the sub-district, suppresses to disturb in the sub-district.n _DMRS ⁽²⁾Can be called dynamic cyclic shift parameters.

n _PRS(n _s): by cell identity identifier N _ID ^Cell(Identity abbreviates ID as) and Δ _SsDecision, based on the variable of time slot saltus step, $n_{\mathrm{PRS}}\left(n_s\right)={\mathrm{\Σ}}_{i=0}^{7}c(8N_{\mathrm{symb}}^{\mathrm{UL}}\·n_s+i)\·2^i,$

f _Ss ^PUSCHBe defined as: $f_{\mathrm{ss}}^{\mathrm{PUSCH}}=(f_{\mathrm{ss}}^{\mathrm{PUCCH}}+{\mathrm{\Δ}}_{\mathrm{ss}})\mathrm{mod}30,$ $f_{\mathrm{ss}}^{\mathrm{PUCCH}}=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}30,$ Δ wherein _Ss∈ 0,1 ..., 29} is by high-rise configuration.

Advanced long-term evolution system (Long-Term Evolution Advanced abbreviates LTE-A as) is the evolution version of LTE Release-8.Require backward compatibility in the senior international wireless communication system demand that International Telecommunications Union's radio communication group proposes.Demand in LTE-Advanced and LTE Release-8 backward compatibility is meant: the terminal of LTE Release-8 can be worked in the network at LTE-Advanced; The terminal of LTE-Advanced can be worked in the network of LTE Release-8.In addition, LTE-Advanced should be able to comprise frequency spectrum configuration (for example, the continuous frequency spectrum resource of 100MHz) the down work wideer than LTE Release-8, to reach higher performance and target peak speed in the frequency spectrum configuration of different sizes.Consider compatibility with LTE Release-8, for bandwidth greater than 20MHz, adopt the mode of spectrum aggregation (Carrier aggregation), that is, two or more component carrier (component carrier) is assembled to support the downstream transmission bandwidth greater than 20MHz.

Terminal in the LTE-A system can send one or more component carriers simultaneously by its ability, and uply can adopt single many antenna transmission of user technology, comprise transmission diversity (Transmit Diversity, abbreviate TxD as) and spatial reuse (Multiple InputMultiple Output abbreviates MIMO as).In order to improve the transmission diversity gain, also may introduce layer and switch (Layer shifting, abbreviate LS as) technology, wherein, when adopting layer handoff technique, the PHICH resource is bound, promptly, correctly the replying of 2 streams of code words/wrong responses information (Acknowledgement/Negative Acknowledgement abbreviates ACK/NACK as) only is mapped on 1 PHICH.Each component carrier supports at most 2 streams of code words to transmit simultaneously, and layer mapping (the Codeword to layer mapping) rule of streams of code words is with the downstream layers mapping ruler, and Fig. 2 is the schematic diagram according to the layer mapping of the up streams of code words of LTE-A of correlation technique.

In correlation technique, uplink scheduling DCI format 0 does not support the upstream multi-antenna transmission, under LTE-A upstream multi-antenna transmitting scene, uplink scheduling DCI need increase form newly, suspense is made DCI format X, if use DCI format X to give each layer of UE (layer) configuration suitable DMRS cyclic shift relevant parameter, by each cyclic shift amount 3 bit, then signaling consumption is bigger, for example, 4 layers of transmission, every layer is disposed one 3 bit DM RS cyclic shift parameter, then needs the signaling of 12 bits.And in order to make the compatible as far as possible LTE of PHICH resource mapping, the corresponding relation of the dynamic cyclic shift parameters of LTE-A demodulated reference signal and actual cycle shift amount still needs to continue to use LTE mode (table 2) in some cases.

In addition, a plurality of layers of transmission may need to a plurality of demodulation reference signal dynamic cyclic shift parameters of UE configuration, so that interlayer interference inhibition and data demodulates.Owing to there is a plurality of layers n _DMRS, therefore, can't determine the n in the corresponding PHICH resources definition of each streams of code words formula _DMRSSpecifically corresponding is the parameter of which layer.

Summary of the invention

Main purpose of the present invention is to provide a kind of processing method of demodulation reference signal dynamic cyclic shift parameters, the bigger problem of signaling consumption when existing to the suitable DMRS dynamic cyclic shift relevant parameter of each layer of UE configuration in the above-mentioned correlation technique to solve at least.

To achieve these goals, according to an aspect of the present invention, provide a kind of processing method of demodulation reference signal dynamic cyclic shift parameters.

Processing method according to demodulation reference signal dynamic cyclic shift parameters of the present invention comprises: the base station sends descending control information format to subscriber equipment, wherein, carry demodulated reference signal DMRS dynamic cyclic shift parameters in the descending control information format, the DMRS dynamic cyclic shift parameters is used in reference to one group of DMRS dynamic cyclic shift amount of the upstream components carrier wave configuration that is shown subscriber equipment; Subscriber equipment obtains one group of DMRS dynamic circulation displacement of DMRS dynamic cyclic shift parameters correspondence.

Preferably, the DMRS dynamic cyclic shift parameters is 2 bits or 3 bits.

Preferably, it is one of following that the DMRS dynamic cyclic shift parameters group demodulation reference signal DMRS dynamic cyclic shift amount of indicating comprises at least: be under 2 the situation in the quantity of the DMRS dynamic cyclic shift amount that one group of DMRS dynamic cyclic shift amount comprises, the DMRS dynamic cyclic shift parameters of 2 bits be used for indicating 4 groups of DMRS the dynamic cyclic shift amount one of; Be under 3 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, the DMRS dynamic cyclic shift parameters of 2 bits be used for indicating 3 groups of DMRS the dynamic cyclic shift amount one of; Be under 4 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, the DMRS dynamic cyclic shift parameters of 2 bits be used for indicating 2 groups of DMRS the dynamic cyclic shift amount one of.

Preferably, be that the dynamic cyclic shift amount of 4 groups of DMRS is: (0,6), (2,8), (3,9), (4,10) under 2 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises.

Preferably, be that the dynamic cyclic shift amount of 3 groups of DMRS is: (0,4,8), (2,6,10), (3,6,9) under 3 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises.

Preferably, be that the dynamic cyclic shift amount of 2 groups of DMRS is: (0,3,6,9), (2,4,8,10) under 4 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises.

Preferably, be under the situation of 3 bits at the DMRS dynamic cyclic shift parameters, calculate the DMRS dynamic cyclic shift amount CS of subscriber equipment k layer according to following formula _k: CS _k=(F _q+ k * (12/n)) mod12, wherein, n is the number of plies of subscriber equipment, q is the DMRS dynamic cyclic shift parameters, and k=0 ..., n-1, n=1,2,3,4, q=0,1,2,3,4,5,6,7, at q=0,1,2,3,4,5,6,7 o'clock, F _qSuccessively corresponding to 0,6,3,4,2,8,10,9.

Preferably, be under 1,2,3 or 4 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, the DMRS dynamic cyclic shift parameters of 3 bits be used for indicating 8 groups of DMRS the dynamic cyclic shift amount one of.

Preferably, be that the dynamic cyclic shift amount of 8 groups of DMRS is: 0,2,3,4,6,8,9,10 under 1 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises.

Preferably, be that the dynamic cyclic shift amount of 8 groups of DMRS is: (0,6), (2 under 2 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, 8), (3,9), (4,10), (6,0), (8,2), (9,3), (10,4).

Preferably, be that the dynamic cyclic shift amount of 8 groups of DMRS is: (0,4 under 3 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that the dynamic cyclic shift amount of one group of DMRS comprises, 8), (2,6,10), (3,6,9), (4,8,0), (6,10,2), (8,0,4), (9,3,6), (10,2,6).

Preferably, be that the dynamic cyclic shift amount of 8 groups of DMRS is: (0,3,6 under 4 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that the dynamic cyclic shift amount of one group of DMRS comprises, 9), (2,4,8,10), (3,6,9,0), (4,8,10,2), (6,9,0,3), (8,10,2,4), (9,0,3,6), (10,2,4,8).

Preferably, 8 groups of DMRS dynamic cyclic shift amounts in order respectively successively the binary signaling of 3 corresponding bits be 000,100,010,011,001,101,111,110.

Preferably, after subscriber equipment gets access to one group of DMRS dynamic cyclic shift amount, said method also comprises: under the quantity of the DMRS dynamic cyclic shift amount that comprises in one group of DMRS dynamic cyclic shift amount and the situation that the number of plies of subscriber equipment equates, the value of the DMRS dynamic cyclic shift amount in one group of DMRS dynamic cyclic shift amount is begun perhaps to begin to shine upon to low layer from high level successively to the high level mapping from the low layer of subscriber equipment successively.

Preferably, in descending control information format, carry and be used to first indication information of indicating DMRS time domain orthogonal sign indicating number whether to enable.

Preferably, first indication information that is used to indicate DMRS time domain orthogonal sign indicating number whether to enable is 1 bit.

Preferably, carry second indication information in descending control information format, wherein, second indication information is used for indication to be handled according to processing mode two or processing mode three, perhaps, second indication information user indication is handled according to processing mode one or processing mode three.

Preferably, after subscriber equipment gets access to one group of DMRS dynamic circulation displacement of DMRS dynamic cyclic shift parameters correspondence, use processing mode one to handle, wherein, processing mode one comprises: under the situation that DMRS time domain orthogonal sign indicating number enables, the layer at same code word place uses identical DMRS dynamic cyclic shift amount, and uses orthogonal code to distinguish demodulation pilot frequency between the different layers at same code word place; Different code words is used different dynamic cyclic shift values, and the value of the DMRS dynamic cyclic shift amount in one group of DMRS dynamic cyclic shift amount is begun perhaps to begin to shine upon to low layer from high level successively to the high level mapping from the low layer of subscriber equipment successively.

Preferably, after subscriber equipment gets access to one group of DMRS dynamic circulation displacement of DMRS dynamic cyclic shift parameters correspondence, under the situation that DMRS time domain orthogonal sign indicating number enables, use processing mode two to handle, wherein, processing mode two comprises: the number of plies at subscriber equipment is 3,4, and the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift parameters comprises is under 2 the situation, the corresponding cyclic shift amount of each streams of code words, the layer of each streams of code words correspondence uses identical DMRS dynamic cyclic shift amount, and uses orthogonal code to distinguish demodulation pilot frequency between the different layers at same code word place, wherein, if only corresponding one deck of streams of code words, then the time domain orthogonal sign indicating number of one deck demodulated reference signal correspondence of code word correspondence is (1,1), if a streams of code words correspondence is two-layer, the time domain orthogonal sign indicating number of the two-layer demodulated reference signal correspondence of code word correspondence is for being respectively (1,1), (1 ,-1); The number of plies at subscriber equipment is 2, and the quantity of the dynamic cyclic shift amount of the DMRS that comprises in one group of DMRS dynamic cyclic shift parameters is under 1 the situation, two streams of code words adopt identical cyclic shift amount, and use different time domain orthogonal sign indicating numbers to distinguish the demodulation pilot frequency of two streams of code words correspondences.

Preferably, after subscriber equipment gets access to one group of DMRS dynamic circulation displacement of DMRS dynamic cyclic shift parameters correspondence, use processing mode three to handle, wherein, processing mode three comprises: every layer demodulation pilot frequency of subscriber equipment adopts different DRMS cyclic shift amounts, wherein, every layer the DMRS cyclic shift amount that demodulation pilot frequency adopted is determined according to the number of plies and DMRS dynamic cyclic shift parameters; Under the situation that demodulated reference signal DMRS time domain orthogonal sign indicating number enables, the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of odd-level index is (1,-1), the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of even level index is (1,1), perhaps, the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of odd-level index is (1,1), the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of even level index is (1 ,-1).

Preferably, first indication information and second indication information are two independently 1 bit signallings, perhaps, and shared 1 bit signalling of first indication information and second indication information; Be carried under the situation of DMRS dynamic cyclic shift parameters at first indication information and second indication information, DMRS dynamic circulation parameter is 3 bits, 4 bits or 5 bits.

Preferably, under the situation that demodulated reference signal DMRS time domain orthogonal sign indicating number does not enable, the time domain orthogonal sign indicating number of every layer demodulated reference signal correspondence is (1,1).

Preferably, after subscriber equipment got access to one group of DMRS dynamic cyclic shift amount, said method also comprised: the minimum or top DMRS dynamic cyclic shift amount in the streams of code words place layer on the upstream components carrier wave is directly shone upon as the PHICH of the compute codeword stream in the physical mixing retransmission indicating chanel PHICH mapping formula of streams of code words.

Preferably, the DMRS dynamic cyclic shift parameters of corresponding one 3 bit of each DMRS dynamic cyclic shift amount in every group of DMRS dynamic cyclic shift amount, wherein, the corresponding relation of the DMRS dynamic cyclic shift amount of configuration and DMRS dynamic cyclic shift parameters is identical in the corresponding relation of DMRS dynamic cyclic shift amount and DMRS dynamic cyclic shift parameters and the descending control information format 0.

Preferably, after subscriber equipment got access to one group of DMRS dynamic cyclic shift amount, said method also comprised: the DMRS dynamic cyclic shift parameters of the minimum or top DMRS dynamic cyclic shift amount correspondence in the streams of code words place layer on the upstream components carrier wave is shone upon as the PHICH that the compute codeword in the physical mixing retransmission indicating chanel PHICH mapping formula of streams of code words flows.

Preferably, after subscriber equipment gets access to one group of DMRS dynamic cyclic shift amount, said method also comprises: at the upstream components carrier wave two streams of code words are arranged, and use under the situation of layer switching, the DMRS dynamic cyclic shift parameters of the minimum or top DMRS dynamic cyclic shift amount correspondence in all layers at two streams of code words places on the last component carrier is shone upon the PHICH mapping of two streams of code words of calculating in the formula as the physical mixing retransmission indicating chanel PHICH of streams of code words.

Preferably, carry in the descending control information format and be used for indication information, wherein, indication information is used to indicate the DMRS dynamic cyclic shift parameters that uses lowermost layer or top DMRS dynamic cyclic shift amount correspondence.

Preferably, carry indication information in the descending control information format, wherein, indication information is used to indicate two streams of code words on the upstream components carrier wave whether to share 1 PHICH resource.

By the present invention, adopt in the descending control information format and carry the demodulated reference signal DMRS dynamic cyclic shift parameters that is used to indicate one group of DMRS dynamic cyclic shift amount, at least solved and had the bigger problem of signaling consumption when giving the suitable DMRS dynamic cyclic shift relevant parameter of each layer of UE configuration in the correlation technique, and then reduced signaling consumption, improved efficient.In addition, also clear and definite under LTE-A upstream multi-antenna scene, in user PHICH mapping formula, use the DMRS dynamic cyclic shift parameters of which DMRS dynamic cyclic shift amount correspondence.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is that the bandwidth according to correlation technique is the schematic diagram of the LTE system physical Resource Block of 5MHz;

Fig. 2 is the schematic diagram according to the layer mapping of the up streams of code words of LTE-A of correlation technique;

Fig. 3 is the flow chart according to the processing method of the demodulation reference signal dynamic cyclic shift parameters of the embodiment of the invention;

Fig. 4 distinguishes the schematic diagram that same code word different layers is led preface according to the orthogonal code of the embodiment of the invention.

Embodiment

Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.

According to embodiments of the invention, a kind of processing method of demodulation reference signal dynamic cyclic shift parameters is provided, Fig. 3 is the flow chart according to the processing method of the demodulation reference signal dynamic cyclic shift parameters of the embodiment of the invention, and as shown in Figure 3, this flow process comprises the steps:

Step S302, the base station sends descending control information format to subscriber equipment, wherein, carry demodulated reference signal DMRS dynamic cyclic shift parameters in the descending control information format, the DMRS dynamic cyclic shift parameters is used in reference to one group of DMRS dynamic cyclic shift amount of the upstream components carrier wave configuration that is shown subscriber equipment;

Step S304, subscriber equipment obtain one group of DMRS dynamic circulation displacement (also can be called the actual dynamic cyclic shift amount of DMRS) of the DMRS dynamic cyclic shift parameters correspondence in the descending control information format.

Pass through above-mentioned steps, by in descending control information format, carrying the DMRS cyclic shift parameter that is used to indicate one group of DMRS dynamic cyclic shift amount, thereby the DMRS dynamic cyclic shift parameters that has solved in DCIformat 0 can only be indicated the problem of a DMRS dynamic cyclic shift amount, and then has reduced the expense of signaling.

Preferably, in step S302, the base station can be improved existing DCI format, enables to be used to indicate one group of DMRS dynamic cyclic shift amount.In order to avoid that as far as possible existing DCI format is changed, can increase a DCI format newly for supporting the upstream multi-antenna transmission, for convenience, the DCI format that increases newly being called DCIformat X, will be that example describes present embodiment with format X below.

Preferably, can in format X, indicate one group of DMRS dynamic cyclic shift amount with 2 bits or 3 bits.Be explained below with reference to several preferred embodiments.

Preferred embodiment one

Need in this example in format X, to indicate 4 groups of actual dynamic cyclic shift amounts of DM RS with the DMRS cyclic shift parameter of 2 bits to 2 DMRS dynamic cyclic shift amounts of UE configuration, for example, this DMRS correspondence (0 of 4 groups, 6), (2,8), (3,9), (4,10).The mapping relations of the DMRS cyclic shift parameter of 2 bits and above-mentioned 4 groups of DMRS dynamic cyclic shift amounts can have very several, and following table 3 is illustrating this.

Table 3

DM RS cyclic shift parameter (binary system) among the DCI format X	DMRS dynamic cyclic shift amount
		??00	??(0，6)
??01	??(2，8)
		??10	??(3，9)
??11	??(4，10)

Preferred embodiment two

Need in this example in format X, to indicate 3 groups of DMRS dynamic cyclic shift amounts with the DMRS dynamic cyclic shift parameters of 2 bits to 3 DMRS dynamic cyclic shift amounts of UE configuration.For example, the actual dynamic cyclic shift amount of these 3 groups of DM RS can be (0,4,8), (2,6,10), (3,6,9).The mapping relations of the DMRS cyclic shift parameter of 2 bits and above-mentioned 3 groups of DMRS dynamic cyclic shift amounts can have several, and following table 4 is illustrating this.

Table 4

DM RS cyclic shift parameter (binary system) among the DCI format X	Actual dynamic cyclic shift amount
		??00	??(0，4，8)
??01	??(2，6，10)
		??10	??(3，6，9)
??11	Default

Preferred embodiment three

Need in this example in format X, to indicate 2 groups of DMRS dynamic cyclic shift amounts with the DMRS dynamic cyclic shift parameters of 2 bits to 4 DM RS dynamic cyclic shift amounts of UE configuration.For example, the actual dynamic cyclic shift amount of these 2 groups of DM RS is (0,3,6,9), (2,4,8,10).The mapping relations of the DMRS cyclic shift parameter of 2 bits and above-mentioned 2 groups of DMRS dynamic cyclic shift amounts can have several, and following table 5 is illustrating this.

Table 5

DM RS cyclic shift parameter (binary system) among the DCI format X	Actual dynamic cyclic shift amount
		??00	??(0，3，6，9)
??01	??(2，4，8，10)
		??10	Default
??11	Default

Preferred embodiment four

Need in this example to indicate 8 group DMRS actual dynamic cyclic shift amounts with the DMRS dynamic cyclic shift parameters of 3 bits to 2 DMRS dynamic cyclic shift amounts of UE configuration in format X, for example, the actual dynamic cyclic shift amount of these 8 groups of DM RS is (0,6), (2,8), (3,9), (4,10), (6,0), (8,2), (9,3), (10,4).The mapping relations of the DMRS cyclic shift parameter of 3 bits and above-mentioned 8 groups of DMRS dynamic cyclic shift amounts can have several, and following table 6 is illustrating this.

Table 6

DM RS cyclic shift parameter (binary system) among the DCI format X	Actual dynamic cyclic shift amount
		??000	??(0，6)

DM RS cyclic shift parameter (binary system) among the DCI format X	Actual dynamic cyclic shift amount
		??001	??(6，0)
??010	??(3，9)
		??011	??(4，10)
??100	??(2，8)
		??101	??(8，2)
??110	??(10，4)
		??111	??(9，3)

Preferred embodiment five

Need in this example in format X, to indicate 8 groups of DMRS dynamic cyclic shift amounts with the DMRS dynamic cyclic shift amount of 3 bits to 3 DMRS dynamic cyclic shift amounts of UE configuration.For example, the actual dynamic cyclic shift amount of these 8 groups of DM RS is (0,4,8), (2,6,10), (3,6,9), (6,10,2), (10,2,6), (4,8,0), (8,0,4), (9,3,6).The mapping relations of the DMRS cyclic shift parameter of 3 bits and above-mentioned 8 groups of DMRS dynamic cyclic shift amounts can have several, and following table 7 is illustrating this.

Table 7

DM RS cyclic shift parameter (binary system) among the DCI format X	Actual dynamic cyclic shift amount
		??000	??(0，4，8)
??001	??(6，10，2)
		??010	??(3，6，9)
??011	??(4，8，0)
		??100	??(2，6，10)
??101	??(8，0，4)
		??110	??(10，2，6)
??111	??(9，3，6)

Preferred embodiment six

In this example six, need in format X, to indicate 8 groups of DMRS dynamic cyclic shift amounts with the DMRS dynamic cyclic shift parameters of 3 bits to 4 DMRS dynamic cyclic shift amounts of UE configuration.For example, these 8 groups of DMRS dynamic cyclic shift amounts are (0,3,6,9), (2,4,8,10), (3,6,9,0), (4,8,10,2), (6,9,0,3), (8,10,2,4), (9,0,3,6), (10,2,4,8).The mapping relations of the DMRS cyclic shift parameter of 3 bits and above-mentioned 8 groups of DMRS dynamic cyclic shift amounts can have several, and following table 8 is illustrating this.

Table 8

DM RS cyclic shift parameter (binary system) among the DCI format X	Actual dynamic cyclic shift amount
		??000	??(0，3，6，9)
??001	??(6，9，0，3)
		??010	??(3，6，9，0)
??011	??(4，8，10，2)
		??100	??(2，4，8，10)
??101	??(8，10，2，4)
		??110	??(10，2，4，8)
??111	??(9，0，3，6)

Preferably, for can with LTE compatibility, dynamic cyclic shift parameters, mapping ruler such as the following table 9 of the demodulated reference signal of every group each DMRS dynamic cyclic shift amount corresponding 13 bit of above-mentioned preferred embodiment one to the preferred embodiment six.

Table 9

The dynamic cyclic shift parameters of demodulated reference signal (binary system)	Actual dynamic cyclic shift amount
		??000	??0
??001	??6
		??010	??3
??011	??4

The dynamic cyclic shift parameters of demodulated reference signal (binary system)	Actual dynamic cyclic shift amount
		??100	??2
??101	??8
		??110	??10
??111	??9

With above-mentioned example one to example six different be when the DMRS dynamic cyclic shift parameters is 3 bits, can also calculate the DMRS dynamic cyclic shift amount CS of subscriber equipment k layer according to following formula _k:

CS _k=(F _q+ k * (12/n)) mod12, wherein, n is the number of plies of subscriber equipment, q is the DMRS dynamic cyclic shift parameters, and k=0 ..., n-1, n=1,2,3,7, q=0,1,2,3,4,5,6,4, at q=0,1,2,3,4,5,6,7 o'clock, F _qSuccessively corresponding to 0,6,3,4,2,8,10,9.

In above-mentioned example one and example six, when the actual dynamic cyclic shift amount number to UE configuration equated with the number of plies, the mapping relations of DMRS dynamic cyclic shift amount and interlayer can be: value in the actual dynamic cyclic shift amount group is begun to shine upon or begin to shine upon to low layer from high level successively to high level from low layer successively.

Preferably, when to the actual dynamic cyclic shift amount number of UE configuration with the number of plies when unequal (number of plies is greater than the number of DMRS dynamic cyclic shift amount at this moment), DMRS dynamic cyclic shift amount with the mapping relations of interlayer can be: the corresponding different layers of same code word adopts identical dynamic cyclic shift value, the interlayer demodulation pilot frequency at same code word place adopts orthogonal code (Orthogonal Cover Code, abbreviate the OC sign indicating number as) distinguish, Fig. 4 distinguishes the schematic diagram that same code word different layers is led preface according to the orthogonal code of the embodiment of the invention, as shown in Figure 4,2 OFDM symbols that the lower level at this code word place or the demodulation pilot frequency of higher level occupy multiply by (1 on time domain,-1) it is anti-phase, to be equivalent to second symbol time domain.Different code words adopts different dynamic cyclic shift values respectively, value in the DMRS dynamic cyclic shift amount group can be begun to high level mapping or begins to shine upon to low layer from high level successively from low layer successively.

Preferably, whether adopt the OC sign indicating number, can indicate (or triggering) with 1 bit signalling.For example, when the signaling that triggers the OC sign indicating number was 0, expression equated with the number of plies to the actual dynamic cyclic shift amount number of UE configuration; When the signaling that triggers the OC sign indicating number was 1, expression was unequal to the actual dynamic cyclic shift amount number and the number of plies of UE configuration.

Preferably, use the processing mode of OC sign indicating number can have following three kinds, below this is described respectively.

Mode one

Under the situation that DMRS time domain orthogonal sign indicating number enables, the layer at same code word place uses identical DMRS dynamic cyclic shift amount, and uses orthogonal code to distinguish demodulation pilot frequency between the different layers at same code word place; Different code words is used different dynamic cyclic shift values, and the value of the DMRS dynamic cyclic shift amount in one group of DMRS dynamic cyclic shift amount is begun perhaps to begin to shine upon to low layer from high level successively to the high level mapping from the low layer of subscriber equipment successively.

Mode two

Under the situation that DMRS time domain orthogonal sign indicating number enables, the number of plies at subscriber equipment is 3,4, and the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift parameters comprises is under 2 the situation, the corresponding cyclic shift amount of each streams of code words, the layer of each streams of code words correspondence uses identical DMRS dynamic cyclic shift amount, and use orthogonal code to distinguish demodulation pilot frequency between the different layers at same code word place, wherein, if only corresponding one deck of streams of code words, then the time domain orthogonal sign indicating number of one deck demodulated reference signal correspondence of code word correspondence is (1,1), if a streams of code words correspondence is two-layer, the time domain orthogonal sign indicating number of the two-layer demodulated reference signal correspondence of code word correspondence is for being respectively (1,1), (1 ,-1);

The number of plies at subscriber equipment is 2, and the quantity of the dynamic cyclic shift amount of the DMRS that comprises in one group of DMRS dynamic cyclic shift parameters is under 1 the situation, two streams of code words adopt identical cyclic shift amount, and use different time domain orthogonal sign indicating numbers to distinguish the demodulation pilot frequency of two streams of code words correspondences.

Mode three

Every layer demodulation pilot frequency of subscriber equipment adopts different DRMS cyclic shift amounts, and wherein, every layer the DMRS cyclic shift amount that demodulation pilot frequency adopted is determined according to the number of plies and DMRS dynamic cyclic shift parameters; Under the situation that demodulated reference signal DMRS time domain orthogonal sign indicating number enables, the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of odd-level index is (1,-1), the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of even level index is (1,1), perhaps, the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of odd-level index is (1,1), the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of even level index is (1 ,-1); Under the situation that demodulated reference signal DMRS time domain orthogonal sign indicating number does not enable, the time domain orthogonal sign indicating number of every layer demodulated reference signal correspondence is (1,1).

Preferably, can carry an indication information in DCI format X, this indication information is used to indicate employing mode two or mode three to handle, and perhaps, this indication information can also indicate employing mode one or mode three to handle.

Preferably, whether adopt the OC sign indicating number and adopt which kind of mode to handle and can adopt two independent bits to indicate respectively, also can shared 1 bit; If the bit that will be used for indicating is arranged on the DRMS dynamic cyclic shift parameters, so, the expense of this parameter just is 3 bits, 4 bits or this 5 bit.

Under LTE-A upstream multi-antenna scene, single user is a plurality of or many group demodulation reference signal dynamic cyclic shift amount of configuration in Physical Downlink Control Channel simultaneously, therefore, in user PHICH mapping formula, need to determine use the DMRS dynamic cyclic shift parameters of which DMRS dynamic cyclic shift amount correspondence, below this is elaborated.

Preferably, when having disposed a group demodulation reference signal dynamic cyclic shift amount in DCI format UE upstream components carrier wave, this moment, the streams of code words 1 and/or the DMRS dynamic cyclic shift parameters in the PHICH mapping formula of streams of code words 2 of this component carrier were the dynamic cyclic shift parameters of the demodulated reference signal of lowermost layer in this streams of code words place layer or top actual dynamic cyclic shift amount correspondence; Perhaps, can also be with the minimum or top DMRS dynamic cyclic shift amount in the streams of code words place layer on the upstream components carrier wave directly as the n in the physical mixing retransmission indicating chanel PHICH mapping formula of streams of code words _DMRSBelow this is illustrated.

For example, have only a streams of code words on certain component carrier of UE upstream multi-antenna transmission subframe, the dynamic cyclic shift parameters of the demodulated reference signal in the formula of the PHICH of this streams of code words mapping is at this moment selected the dynamic cyclic shift parameters of the demodulated reference signal of lowermost layer or top actual dynamic cyclic shift amount correspondence.

For example, when on certain component carrier of UE upstream multi-antenna transmission subframe 2 streams of code words being arranged, this moment, the streams of code words 1 or the dynamic cyclic shift parameters of the demodulated reference signal in the PHICH mapping formula of streams of code words 2 of this component carrier were the dynamic cyclic shift parameters of the demodulated reference signal of lowermost layer in this streams of code words place layer or top actual dynamic cyclic shift amount correspondence.

For example, on certain component carrier of UE upstream multi-antenna transmission subframe, 2 streams of code words are arranged, and when adopting this moment layer to switch (LS) technology, this moment, the streams of code words 1 and the dynamic cyclic shift parameters of the demodulated reference signal in the PHICH mapping formula of streams of code words 2 of this component carrier were the dynamic cyclic shift parameters of the demodulated reference signal of lowermost layer or top actual dynamic cyclic shift amount correspondence in all layers.

Preferably, can increase the transmission of 1 bit signalling indication upstream multi-antenna and whether adopt the PHICH binding, be still respectively corresponding 1 the PHICH resource of shared 1 the PHICH resource of 2 streams of code words on the component carrier, 2 streams of code words of PHICH binding are shared 1 PHICH resource.For example, when the bit that is used to indicate was 0, expression PHICH binding was 1 o'clock, and expression PHICH does not bind.

Preferably, can select the DMRS dynamic cyclic shift parameters of lowermost layer or top DMRS dynamic cyclic shift amount correspondence with the signaling indication of 1 bit.For example, the bit that is used to indicate is 0 o'clock, and expression selection lowermost layer is 1 o'clock, and expression is selected top.Perhaps when the bit that is used to indicate was 1, expression selection lowermost layer was 0 o'clock, and expression is selected top.Can also take to give tacit consent to principle, for example, acquiescence adopts the DMRS dynamic cyclic shift parameters of the DMRS dynamic cyclic shift amount correspondence of low layer.

Be described in detail below in conjunction with preferred embodiment.Wherein, preferred embodiment seven to preferred embodiment nine is the illustrating of DMRS dynamic cyclic shift parameters of selecting DMRS dynamic cyclic shift amount correspondence to above-mentioned DCI format X and in user PHICH mapping formula; Preferred embodiment ten to preferred embodiment 13 is illustrating the mapping of PHICH resource.

Preferred embodiment seven

UE can be in 2 streams of code words of up employing 4 antenna transmission in this example: streams of code words 1 and streams of code words 2, and this moment, the number of plies was 2, i.e. layer 1 and layer 2.Signaling with 2 bits in format X is distributed 2 actual dynamic cyclic shift amounts of DMRS to UE, and is then as shown in table 3 if this 2 bit is 01, and one group of corresponding actual dynamic cyclic shift amount of expression is (2,8).

Value in the DMRS dynamic cyclic shift amount group can be according to the principle that begins from low layer to the high level mapping, also can shine upon to low layer according to beginning from high level.Describe to begin being mapped as example from low layer at this to high level.According to this principle, the actual dynamic cyclic shift amount of DMRS of layer 1 is 2, and the actual dynamic cyclic shift amount of DMRS of layer 2 is 8.According to streams of code words and layer mapping ruler, streams of code words 1 respective layer 1, streams of code words 2 respective layer 2 are so the DMRS dynamic cyclic shift parameters in the PHICH resource mapping formula of streams of code words 1 is the dynamic cyclic shift parameters 4 that the actual dynamic cyclic shift amount of layer 1 is 2 correspondences; DMRS dynamic cyclic shift parameters in the PHICH resource mapping formula of streams of code words 2 is the dynamic cyclic shift parameters 5 (as shown in table 9) that the actual dynamic cyclic shift amount of layer 2 is 8 correspondences.

Preferred embodiment eight

2 streams of code words of up employing 4 antenna transmission of UE in this example, i.e. streams of code words 1 and streams of code words 2, and this moment, the number of plies was 4, promptly layer 1 is to layer 4, then in format X with the DMRS dynamic cyclic shift parameters of 2 bits to 4 DMRS dynamic cyclic shift amounts of UE distribution.If this 2 bit is 00, then one group of corresponding actual dynamic cyclic shift amount of expression is (0,3,6,9) (as shown in table 5).

Value can be according to the principle that begins from low layer to the high level mapping in the DMRS dynamic cyclic shift amount group, the actual dynamic cyclic shift amount of layer 1 is 0, the actual dynamic cyclic shift amount of layer 2 is 3, and the actual dynamic cyclic shift amount of layer 3 is 6, and the actual dynamic cyclic shift amount of layer 4 is 9.According to streams of code words and layer mapping ruler, streams of code words 1 is mapped to layer 1 and layer 2, streams of code words 2 is mapped to layer 3 and layer 4, select low layer cyclic shift parameter to shine upon so increase signaling value 0 indication of 1 bit according to other, the low layer at streams of code words 1 place is 1, the low layer at streams of code words 2 places is 3, and the dynamic cyclic shift parameters of the demodulated reference signal in the PHICH resource mapping formula of streams of code words 1 is that the DMRS dynamic cyclic shift amount of layer 1 is the DMRS dynamic cyclic shift parameters 0 of 0 correspondence; DMRS dynamic cyclic shift parameters in the PHICH resource mapping formula of streams of code words 2 is that the DMRS dynamic cyclic shift amount of layer 3 is the DMRS dynamic cyclic shift parameters 1 (as shown in table 9) of 6 correspondences.

Preferred embodiment nine

2 streams of code words of up employing 4 antenna transmission of UE in this example, be streams of code words 1 and streams of code words 2, and this moment, the number of plies was 4, promptly layer 1 is to layer 4, and then the DMRS dynamic cyclic shift parameters with 3 bits distributes 4 DMRS dynamic cyclic shift amounts to UE in format X, if this 3 bit is 010, then one group of corresponding DMRS dynamic cyclic shift amount of expression is (3,6,9,0) (as shown in table 8).

Value can be according to the principle that begins from low layer to the high level mapping in the DMRS dynamic cyclic shift amount group, the actual dynamic cyclic shift amount of layer 1 is 3, the actual dynamic cyclic shift amount of layer 2 is 6, and the actual dynamic cyclic shift amount of layer 3 is 9, and the actual dynamic cyclic shift amount of layer 4 is 0.According to streams of code words and layer mapping ruler, streams of code words 1 is mapped to layer 1 and layer 2, streams of code words 2 is mapped to layer 3 and layer 4, adopt the low layer parameter at streams of code words place to shine upon during the mapping of PHICH resource, the low layer at streams of code words 1 place is 1, the low layer at streams of code words 2 places is 3, and the DMRS dynamic cyclic shift parameters in the PHICH resource mapping formula of streams of code words 1 is that the DMRS dynamic cyclic shift amount of layer 1 is the DMRS dynamic cyclic shift parameters 2 of 3 correspondences; DMRS dynamic cyclic shift parameters in the PHICH resource mapping formula of streams of code words 2 is that the DMRS dynamic cyclic shift amount of layer 3 is the DMRS dynamic cyclic shift parameters 7 (as shown in table 9) of 9 correspondences.

Preferred embodiment ten

The UE upstream multi-antenna transmits on the real component carrier wave 1 and only sends 1 streams of code words, and this streams of code words is mapped on 2 layers: layer 1 and layer 2, and corresponding 1 the actual dynamic cyclic shift amount of the DM RS of each layer, the formula of the PHICH resource of this streams of code words mapping at this moment:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

In n _DMRSFor hanging down the DM RS dynamic cyclic shift parameters (as shown in table 9) of actual dynamic cyclic shift amount correspondence in table 9 of 1 correspondence layer by layer.

Preferred embodiment 11

Send 2 streams of code words on the UE upstream multi-antenna transmission real component carrier wave 1: streams of code words 1 and streams of code words 2, streams of code words 1 is mapped on the layer 1, streams of code words 2 is mapped on the layer 2, relevant signaling according to PDCCH, draw corresponding 1 actual dynamic cyclic shift amount of DMRS of each layer, for example, the actual dynamic cyclic shift amount of the DMRS of layer 1 is 2, the actual dynamic cyclic shift amount of the DMRS of layer 2 is 8, PHICH resource mapping this moment formula:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

In the n of streams of code words 1 _DMRSBe the actual dynamic cyclic shift amount 2 of layer 1 correspondence corresponding DM RS dynamic cyclic shift parameters 4 (as shown in table 9) in table 9, n _DMRS=4, the n of streams of code words 2 _DMRSBe the actual dynamic cyclic shift amount 8 of layer 2 correspondence corresponding DM RS dynamic cyclic shift parameters 5 (as shown in table 9) in table 9, n _DMRS=5.

Preferred embodiment 12

Send 2 streams of code words on the UE upstream multi-antenna transmission real component carrier wave 1, streams of code words 1 is mapped on layer 1 and the layer 2, streams of code words 2 is mapped on layer 3 and the layer 4, relevant signaling according to PDCCH, draw corresponding 1 actual dynamic cyclic shift amount of DMRS of each layer, the actual dynamic cyclic shift amount that flows into the DMRS of layer 1 is 0, the actual dynamic cyclic shift amount of the DMRS of layer 2 is 3, the actual dynamic cyclic shift amount of the DMRS of layer 3 is 6, the actual dynamic cyclic shift amount of the DMRS of layer 4 is 9, and this moment, the PHICH resource of streams of code words 1 was shone upon formula:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

In n _DMRSBe the actual dynamic cyclic shift amount 0 of layer 1 correspondence corresponding DM RS dynamic cyclic shift parameters 0 in table 2, n _DMRS=0; The n in above-mentioned formula of streams of code words 2 _DMRSBe the actual dynamic cyclic shift amount 6 of layer 3 correspondence corresponding DM RS dynamic cyclic shift parameters 1 (as shown in table 9) in table 9, n _DMRS=1.Thereby 2 streams of code words are mapped on the different PHICH.

Preferred embodiment 13

Send 2 streams of code words on the UE upstream multi-antenna transmission real component carrier wave 1, and adopt layer to switch (LS) technology, the PHICH resource mapping formula of this moment:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

In n _DMRSBe lowermost layer: the DM RS dynamic cyclic shift parameters of actual dynamic cyclic shift amount correspondence in table 9 of layer 1 correspondence.

Preferred embodiment 14

Send 2 streams of code words on the UE upstream multi-antenna transmission real component carrier wave 1: streams of code words 1 and streams of code words 2, streams of code words 1 is mapped on the layer 1, streams of code words 2 is mapped on the layer 2, relevant signaling according to PDCCH, draw corresponding 1 actual dynamic cyclic shift amount of DMRS of each layer, for example, the actual dynamic cyclic shift amount of the DMRS of layer 1 is 2, the actual dynamic cyclic shift amount of the DMRS of layer 2 is 8, PHICH resource mapping this moment formula:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

In the n of streams of code words 1 _DMRSBe the actual dynamic cyclic shift amount 2 of layer 1 correspondence, n _DMRS=2, the n of streams of code words 2 _DMRSBe the actual dynamic cyclic shift amount 8 of layer 2 correspondence, n _DMRS=8.

In sum, by the above embodiment of the present invention, solved and had the bigger problem of signaling consumption when giving the suitable DMRS cyclic shift relevant parameter of each layer of UE configuration in the correlation technique, and then reduced signaling consumption, improved efficient.In addition, also clear and definite under LTE-A upstream multi-antenna scene, in user PHICH mapping formula, use the DMRS dynamic cyclic shift parameters of which DMRS dynamic cyclic shift amount correspondence.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (28)

1. the processing method of a demodulation reference signal dynamic cyclic shift parameters is characterized in that, comprising:

The base station sends descending control information format to subscriber equipment, wherein, carry demodulated reference signal DMRS dynamic cyclic shift parameters in the described descending control information format, described DMRS dynamic cyclic shift parameters is used in reference to one group of DMRS dynamic cyclic shift amount of the upstream components carrier wave configuration that is shown described subscriber equipment;

Described subscriber equipment obtains one group of DMRS dynamic circulation displacement of described DMRS dynamic cyclic shift parameters correspondence.

2. method according to claim 1 is characterized in that, described DMRS dynamic cyclic shift parameters is 2 bits or 3 bits.

3. method according to claim 2 is characterized in that, it is one of following that the described DMRS dynamic cyclic shift parameters group demodulation reference signal DMRS dynamic cyclic shift amount of indicating comprises at least:

Be under 2 the situation in the quantity of the DMRS dynamic cyclic shift amount that one group of DMRS dynamic cyclic shift amount comprises, the DMRS dynamic cyclic shift parameters of described 2 bits be used for indicating 4 groups of DMRS the dynamic cyclic shift amount one of;

Be under 3 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, the DMRS dynamic cyclic shift parameters of described 2 bits be used for indicating 3 groups of DMRS the dynamic cyclic shift amount one of;

Be under 4 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, the DMRS dynamic cyclic shift parameters of described 2 bits be used for indicating 2 groups of DMRS the dynamic cyclic shift amount one of.

4. method according to claim 3 is characterized in that, is under 2 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, the dynamic cyclic shift amount of described 4 groups of DMRS is: (0,6), (2,8), (3,9), (4,10).

5. method according to claim 3 is characterized in that, is that the dynamic cyclic shift amount of described 3 groups of DMRS is: (0 under 3 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, 4,8), (2,6,10), (3,6,9).

6. method according to claim 3 is characterized in that, is that the dynamic cyclic shift amount of described 2 groups of DMRS is: (0 under 4 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, 3,6,9), (2,4,8,10).

7. method according to claim 2 is characterized in that, is under the situation of 3 bits at described DMRS dynamic cyclic shift parameters, calculates the DMRS dynamic cyclic shift amount CS of described subscriber equipment k layer according to following formula _k:

CS _k=(F _q+ k * (12/n)) mod12, wherein, n is the number of plies of described subscriber equipment, q is described DMRS dynamic cyclic shift parameters, and k=0 ..., n-1, n=1,2,3,4, q=0,1,2,3,4,5,6,7, at q=0,1,2,3,4,5,6,7 o'clock, F _qSuccessively corresponding to 0,6,3,4,2,8,10,9.

8. method according to claim 2, it is characterized in that, be under 1,2,3 or 4 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, the DMRS dynamic cyclic shift parameters of described 3 bits be used for indicating 8 groups of DMRS the dynamic cyclic shift amount one of.

9. method according to claim 8, it is characterized in that, be that the dynamic cyclic shift amount of described 8 groups of DMRS is: 0,2,3,4,6,8,9,10 under 1 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises.

10. method according to claim 8, it is characterized in that, be that the dynamic cyclic shift amount of described 8 groups of DMRS is: (0 under 2 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises, 6), (2,8), (3,9), (4,10), (6,0), (8,2), (9,3), (10,4).

11. method according to claim 8 is characterized in that, is that the dynamic cyclic shift amount of described 8 groups of DMRS is: (0 under 3 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that the dynamic cyclic shift amount of one group of DMRS comprises, 4,8), (2,6,10), (3,6,9), (4,8,0), (6,10,2), (8,0,4), (9,3,6), (10,2,6).

12. method according to claim 8 is characterized in that, is that the dynamic cyclic shift amount of described 8 groups of DMRS is: (0,3 under 4 the situation in the quantity of the dynamic cyclic shift amount of the DMRS that the dynamic cyclic shift amount of one group of DMRS comprises, 6,9), (2,4,8,10), (3,6,9,0), (4,8,10,2), (6,9,0,3), (8,10,2,4), (9,0,3,6), (10,2,4,8).

13. according to each described method in the claim 9 to 12, it is characterized in that, described 8 groups of DMRS dynamic cyclic shift amounts according to described order respectively the binary signaling of 3 corresponding successively bits be 000,100,010,011,001,101,111,110.

14. method according to claim 1 is characterized in that, after described subscriber equipment got access to described one group of DMRS dynamic cyclic shift amount, described method also comprised:

Under the quantity of the DMRS dynamic cyclic shift amount that in described one group of DMRS dynamic cyclic shift amount, comprises and the situation that the number of plies of described subscriber equipment equates, the value of the DMRS dynamic cyclic shift amount in described one group of DMRS dynamic cyclic shift amount is begun to the high level mapping from the low layer of described subscriber equipment successively, perhaps shine upon to described low layer from described high-rise beginning successively.

15. method according to claim 1 is characterized in that, carries to be used to first indication information of indicating DMRS time domain orthogonal sign indicating number whether to enable in described descending control information format.

16. method according to claim 15 is characterized in that, described first indication information that is used to indicate DMRS time domain orthogonal sign indicating number whether to enable is 1 bit.

17. method according to claim 15, it is characterized in that, in described descending control information format, carry second indication information, wherein, described second indication information is used for indication to be handled according to processing mode two or processing mode three, perhaps, second indication information user indication is handled according to processing mode one or described processing mode three.

18. according to claim 15 or 17 described methods, it is characterized in that, after described subscriber equipment gets access to one group of DMRS dynamic circulation displacement of described DMRS dynamic cyclic shift parameters correspondence, use processing mode one to handle, wherein, described processing mode one comprises:

Under the situation that described DMRS time domain orthogonal sign indicating number enables, the layer at same code word place uses identical DMRS dynamic cyclic shift amount, and uses orthogonal code to distinguish demodulation pilot frequency between the different layers at described same code word place; Different code words is used different dynamic cyclic shift values, and the value of the DMRS dynamic cyclic shift amount in described one group of DMRS dynamic cyclic shift amount begun to the high level mapping from the low layer of described subscriber equipment successively, perhaps successively from described high-rise beginning to described low layer mapping.

19. according to claim 15 or 17 described methods, it is characterized in that, after described subscriber equipment gets access to one group of DMRS dynamic circulation displacement of described DMRS dynamic cyclic shift parameters correspondence, under the situation that described DMRS time domain orthogonal sign indicating number enables, use processing mode two to handle, wherein, described processing mode two comprises:

The number of plies at described subscriber equipment is 3,4, and the quantity of the dynamic cyclic shift amount of the DMRS that described one group of DMRS dynamic cyclic shift parameters comprises is under 2 the situation, the corresponding cyclic shift amount of each streams of code words, the layer of each streams of code words correspondence uses identical DMRS dynamic cyclic shift amount, and use orthogonal code to distinguish demodulation pilot frequency between the different layers at described same code word place, wherein, if only corresponding one deck of streams of code words, the time domain orthogonal sign indicating number of one deck demodulated reference signal correspondence of then described code word correspondence is (1,1), if a streams of code words correspondence is two-layer, the time domain orthogonal sign indicating number of the two-layer demodulated reference signal correspondence of described code word correspondence is for being respectively (1,1), (1 ,-1);

The number of plies at described subscriber equipment is 2, and the quantity of the dynamic cyclic shift amount of the DMRS that comprises in described one group of DMRS dynamic cyclic shift parameters is under 1 the situation, two streams of code words adopt identical cyclic shift amount, and use different time domain orthogonal sign indicating numbers to distinguish the demodulation pilot frequency of two streams of code words correspondences.

20. according in the claim 3 to 6 each or 9 to 12 in each or 15 or 17 described methods, it is characterized in that, after described subscriber equipment gets access to one group of DMRS dynamic circulation displacement of described DMRS dynamic cyclic shift parameters correspondence, use processing mode three to handle, wherein, described processing mode three comprises:

Every layer demodulation pilot frequency of described subscriber equipment adopts different DRMS cyclic shift amounts, and wherein, described every layer the DMRS cyclic shift amount that demodulation pilot frequency adopted is determined according to the number of plies and DMRS dynamic cyclic shift parameters; Under the situation that described demodulated reference signal DMRS time domain orthogonal sign indicating number enables, the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of odd-level index is (1,-1), the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of even level index is (1,1), perhaps, the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of odd-level index is (1,1), the time domain orthogonal sign indicating number of the demodulated reference signal correspondence of even level index is (1 ,-1).

21., it is characterized in that described first indication information and described second indication information are two independently 1 bit signallings according to claim 15 or 17 described methods, perhaps, described first indication information and shared 1 bit signalling of described second indication information; Be carried under the situation of described DMRS dynamic cyclic shift parameters at described first indication information and described second indication information, described DMRS dynamic circulation parameter is 3 bits, 4 bits or 5 bits.

22. method according to claim 15 is characterized in that,

Under the situation that described demodulated reference signal DMRS time domain orthogonal sign indicating number does not enable, the time domain orthogonal sign indicating number of described every layer demodulated reference signal correspondence is (1,1).

23. method according to claim 1 is characterized in that, after described subscriber equipment got access to described one group of DMRS dynamic cyclic shift amount, described method also comprised:

With the minimum or top DMRS dynamic cyclic shift amount in the streams of code words place layer on the described upstream components carrier wave directly as the n in the physical mixing retransmission indicating chanel PHICH of the streams of code words mapping formula _DMRSCalculate the PHICH mapping of described streams of code words.

24. method according to claim 1, it is characterized in that, the DMRS dynamic cyclic shift parameters of corresponding one 3 bit of each DMRS dynamic cyclic shift amount in every group of DMRS dynamic cyclic shift amount, wherein, the corresponding relation of the DMRS dynamic cyclic shift amount of configuration and DMRS dynamic cyclic shift parameters is identical in the corresponding relation of DMRS dynamic cyclic shift amount and DMRS dynamic cyclic shift parameters and the descending control information format 0.

25. method according to claim 24 is characterized in that, after described subscriber equipment got access to described one group of DMRS dynamic cyclic shift amount, described method also comprised:

With the DMRS dynamic cyclic shift parameters of the minimum or top DMRS dynamic cyclic shift amount correspondence in the streams of code words place layer on the described upstream components carrier wave as the n in the physical mixing retransmission indicating chanel PHICH mapping formula of streams of code words _DMRSCalculate the PHICH mapping of described streams of code words.

26. method according to claim 24 is characterized in that, after described subscriber equipment got access to described one group of DMRS dynamic cyclic shift amount, described method also comprised:

At described upstream components carrier wave two streams of code words are arranged, and use under the situation that layer switches, with the DMRS dynamic cyclic shift parameters of the minimum or top DMRS dynamic cyclic shift amount correspondence in described all layers of going up two streams of code words places on the component carrier as the n in the physical mixing retransmission indicating chanel PHICH mapping formula of streams of code words _DMRSCalculate the PHICH mapping of described two streams of code words.

27. according to claim 23 or 25 or 26 described methods, it is characterized in that, carry in the described descending control information format and be used for indication information, wherein, described indication information is used to indicate the DMRS dynamic cyclic shift parameters that uses lowermost layer or top DMRS dynamic cyclic shift amount correspondence.

28., it is characterized in that according to claim 23 or 25 described methods, carry indication information in the described descending control information format, wherein, described indication information is used to indicate two streams of code words on the described upstream components carrier wave whether to share 1 PHICH resource.

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