CN101741462B - 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, referred to as LTE) system is the essential planning of third generation partnership.When LTE system adopts regular circulation prefix (Normal CyclicPrefix), a up/down row symbol that time slot comprises 7 length, when LTE system adopts extended cyclic prefix (Extended Cyclic Prefix), a up/down row symbol that time slot comprises 6 length.

The schematic diagram of the LTE system Physical Resource Block that Fig. 1 is is 5MHz according to the bandwidth of correlation technique, as shown in Figure 1, a Resource Unit (Resource Element, referred to as RE) be a subcarrier in an OFDM symbol, and a downlink resource piece (Resource Block, referred to as RB) consists 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 the time span of a general time slot in time domain, carries out resource and divides timing, can take Resource Block distribute as base unit.In sub-frame of uplink, Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH) be positioned on two sidebands of whole frequency band, middle for transmitting physical Uplink Shared Channel (PhysicalUplink Shared Channel, PUSCH), this channel is used for carrying upstream data.

In LTE system definition following several physical channels:

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

Physical Downlink Control Channel (Physical downlink control channel, referred to as PDCCH): for carrying uplink and downlink schedule information, and uplink power control information.

Downlink Control Information (Downlink Control Information, referred to as DCI) 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, referred to as PUSCH); DCI format 1,1A, 1B, 1C, 1D is for the different transmission mode of the Physical Downlink Shared Channel (Physical DownlinkShared Channel, referred to as PDSCH) of single transport piece; DCI format 2,2A is for the different transmission mode of space division multiplexing; DCI format 3,3A is for the transmission of the power control instruction of Physical Uplink Control Channel (Physical uplink control channel, referred to as PUCCH) and PUSCH.

Physical Uplink Shared Channel: for carrying uplink transmission data.The resource that this channel is relevant is distributed, modulation and encoding scheme, the control informations such as the cyclic shift (Cyclic shift) of demodulated reference signal (Demodulation ReferenceSignal, referred to as DMRS) are arranged with DCI format 0 by UL grant (uplink authorization).

Physical mixing retransmission indicating chanel (Physical Hybrid ARQ IndicatorChannel, referred to as PHICH): for carrying the ACK/NACK feedback information of uplink transmission data.The number of PHICH channel group, the system message of duration (duration) in the PBCH of the descending carrier at place determine, the time-frequency position of PHICH is determined by sequence index in the group number of antenna configuration, community ID and the PHICH of the number of PHICH channel group, duration, community PBCH and group.

For frame structure 1, the number N of PHICH group _pHICH ^groupby following formula (a), determined:

formula (a)

N _g{ 1/6,1/2,1,2} is determined by the system message in the PBCH of the descending carrier (Downlink carrier, referred to as DLcarrier) 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, determined.

Table 1

PHICH resource is by (n _pHICH ^group, n _pHICH ^seq) determine n _pHICH ^groupfor the group number of PHICH, n _pHICH ^seqbe the index of orthogonal sequence in group, by formula (b) below, determined:

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

N _dMRSdemodulated reference signal (the DemodulationReference Signal of definition in DCI format 0, referred to as DMRS) dynamic cyclic shift parameters, the configuration of this parameter makes between the MU-MIMO user in community, to have different cyclic shifts, make MU-MIMO user's quadrature in community, suppress to disturb in community.The configuration of this parameter is as described in the table 2 of lower end.

Table 2

DMRS dynamic cyclic shift parameters n in DCI format 0 DMRS (2)	Actual dynamic cyclic shift amount
		000	0
001	6
		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, referred to as PRB) of ascending resource distribution;

Up permission single antenna of LTE Release-8 sends.N in formula (b) _dMRSfor UE, in DCI format 0, only can configure 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 PUSCH bandwidth.

The cyclic shift n of DMRS sequence _cs

N _csby three parameters, determined, be described as follows:

N _dMRS ⁽¹⁾: by higher level parameters, determine (3bit), semi-static configuration, makes different communities have different cyclic shifts, makes minizone MU-MIMO user's quadrature, suppresses presence of intercell interference.

N _dMRS ⁽²⁾: by nearest DCI format 0, provide (3bit) (reference table 2), between the MU-MIMO user in dynamic-configuration ，Shi community, there is MU-MIMO user's quadrature in different cyclic shift ，Shi communities, suppress to disturb in community.N _dMRS ⁽²⁾can be called dynamic cyclic shift parameters.

N _pRS(n _s): by cell identity identifier N _iD ^cell(Identity, referred to as ID) and Δ _ssdetermine, the variable based on 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} configures by high level.

Advanced long-term evolution system (Long-Term Evolution Advanced, referred to as LTE-A) is the evolution version of LTE Release-8.In the senior international wireless communication system demand that International Telecommunications Union's radio communication group proposes, require backward compatibility.Demand in LTE-Advanced and LTE Release-8 backward compatibility refers to: 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, at the spectrum disposition of different sizes, comprise for example, under the spectrum disposition wider than LTE Release-8 (, the continuous frequency spectrum resource of 100MHz) work, to reach higher performance and target peak speed.Consider the compatibility with LTE Release-8, for the bandwidth that is greater than 20MHz, adopt the mode of spectrum aggregation (Carrier aggregation), that is, two or more component carrier (component carrier) assembles to support to be greater than the downstream transmission bandwidth of 20MHz.

Terminal in LTE-A system can send one or more component carriers by its ability simultaneously, and uply can adopt alone family many antennas transmission technology, comprise transmission diversity (Transmit Diversity, referred to as TxD) and spatial reuse (Multiple InputMultiple Output, referred to as MIMO).In order to improve transmission diversity gain, also may introduce layer and switch (Layer shifting, referred to as LS) technology, wherein, while adopting layer handoff technique, PHICH resource is bound,, the correctly reply/wrong responses information (Acknowledgement/Negative Acknowledgement, referred to as ACK/NACK) of 2 streams of code words is only 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 at same downstream layers mapping ruler, and Fig. 2 is according to the schematic diagram of 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 upstream multi-antenna transmission, under LTE-A upstream multi-antenna transmitting scene, uplink scheduling DCI need to increase form newly, suspense is made DCI format X, if use DCI format X to configure suitable DMRS cyclic shift relevant parameter to each layer of UE (layer), by each cyclic shift amount 3 bit, signaling consumption is larger, for example, 4 layers of transmission, every layer configures 3 bit DM RS cyclic shift parameters, 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 configure a plurality of demodulation reference signal dynamic cyclic shift parameters to UE, so that interlayer interference inhibition and data demodulates.Owing to there being the n of a plurality of layers _dMRS, therefore, cannot 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 larger problem of signaling consumption while existing to the suitable DMRS dynamic cyclic shift relevant parameter of each layer of configuration of UE in above-mentioned correlation technique at least to solve.

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.

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

Preferably, 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 at least comprises: in the situation that the DMRS dynamic cyclic shift parameters that the quantity of the DMRS dynamic cyclic shift amount that one group of DMRS dynamic cyclic shift amount comprises is 2,2 bits be used to indicate in the dynamic cyclic shift amount of 4 groups of DMRS one of; In the situation that the DMRS dynamic cyclic shift parameters that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises is 3,2 bits be used to indicate in the dynamic cyclic shift amount of 3 groups of DMRS one of; In the situation that the DMRS dynamic cyclic shift parameters that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises is 4,2 bits be used to indicate in the dynamic cyclic shift amount of 2 groups of DMRS one of.

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

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

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

Preferably, in the situation that DMRS dynamic cyclic shift parameters is 3 bit, according to following formula, calculate the DMRS dynamic cyclic shift amount CS of subscriber equipment k layer _k: CS _k=(F _q+ k * (12/n)) mod12, wherein, the number of plies that n is subscriber equipment, q is DMRS dynamic cyclic shift parameters, 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, in the situation that the DMRS dynamic cyclic shift parameters that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises is 1,2,3 or 4,3 bits be used to indicate in the dynamic cyclic shift amount of 8 groups of DMRS one of.

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

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

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

Preferably, in the situation that the dynamic cyclic shift amount that the quantity of the dynamic cyclic shift amount of the DMRS that the dynamic cyclic shift amount of one group of DMRS comprises is 4,8 groups of DMRS be: (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).

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 one group of DMRS dynamic cyclic shift amount, said method also comprises: in the situation that the quantity of the DMRS dynamic cyclic shift amount that one group of DMRS dynamic cyclic shift amount comprises equates with the number of plies of subscriber equipment, the value of the DMRS dynamic cyclic shift amount in one group of DMRS dynamic cyclic shift amount is started to high level mapping from the low layer of subscriber equipment successively, or from high level, start to shine upon to low layer successively.

Preferably, in descending control information format, carry and be used to indicate the first indication information whether DMRS time domain orthogonal code enables.

Preferably, being used to indicate the first indication information whether DMRS time domain orthogonal code enable is 1 bit.

Preferably, in descending control information format, carry the second indication information, wherein, the second indication information is used to indicate according to processing mode two or processing mode three and processes, or the second indication information user indication is processed according to processing mode one or processing mode three.

Preferably, after subscriber equipment gets one group of DMRS dynamic circulation displacement that DMRS dynamic cyclic shift parameters is corresponding, use processing mode one to process, wherein, processing mode one comprises: in the situation that DMRS time domain orthogonal code enables, the layer at same code word place is used 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 started to high level mapping from the low layer of subscriber equipment successively, or from high level, starts to shine upon to low layer successively.

Preferably, after subscriber equipment gets one group of DMRS dynamic circulation displacement that DMRS dynamic cyclic shift parameters is corresponding, in the situation that DMRS time domain orthogonal code enables, use processing mode two to process, wherein, processing mode two comprises: the number of plies at subscriber equipment is 3, 4, and in the situation that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift parameters comprises is 2, the corresponding cyclic shift amount of each streams of code words, layer corresponding to each streams of code words used 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 streams of code words is corresponding one deck only, time domain orthogonal code corresponding to one deck demodulated reference signal corresponding to code word is (1, 1), if a streams of code words correspondence is two-layer, time domain orthogonal code corresponding to two-layer demodulated reference signal corresponding to code word is for being respectively (1, 1), (1,-1), the number of plies at subscriber equipment is 2, and in the situation that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift parameters comprises is 1, two streams of code words adopt identical cyclic shift amount, and use different time domain orthogonal codes to distinguish two demodulation pilot frequencies that streams of code words is corresponding.

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

Preferably, the first indication information and the second indication information are two independently 1 bit signallings, or the first indication information and the second indication information share 1 bit signalling; In the situation that the first indication information and the second indication information are carried on DMRS dynamic cyclic shift parameters, DMRS dynamic circulation parameter is 3 bits, 4 bits or 5 bits.

Preferably, in the situation that demodulated reference signal DMRS time domain orthogonal code does not enable, the time domain orthogonal code corresponding to demodulated reference signal of every layer is (1,1).

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

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

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

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

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

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

By the present invention, adopt in 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 the larger problem of signaling consumption while existing to the suitable DMRS dynamic cyclic shift relevant parameter of each layer of configuration of UE in correlation technique, and then reduced signaling consumption, improved efficiency.In addition, also clear and definite under LTE-A upstream multi-antenna scene, in user PHICH mapping formula, use DMRS dynamic cyclic shift parameters corresponding to which DMRS dynamic cyclic shift amount.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

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

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

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

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

Embodiment

Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine 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 according to the flow chart of the processing method of the demodulation reference signal dynamic cyclic shift parameters of the embodiment of the present invention, and as shown in Figure 3, this flow process comprises the steps:

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

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

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

Preferably, in step S302, 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 existing DCI format is changed as far as possible, can be for supporting upstream multi-antenna transmission to newly increase a DCI format, for convenience, the DCI format newly increasing is called to DCIformat X, the format X of take below describes the present embodiment as example.

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

Preferred embodiment one

Need in this example, to 2 DMRS dynamic cyclic shift amounts of UE configuration, in format X, by the DMRS cyclic shift parameter of 2 bits, to indicate 4 groups of actual dynamic cyclic shift amounts of DM RS, for example, this DMRS of 4 groups corresponding (0,6), (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) in 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, to 3 DMRS dynamic cyclic shift amounts of UE configuration, in format X, with the DMRS dynamic cyclic shift parameters of 2 bits, to indicate 3 groups of DMRS dynamic cyclic shift amounts.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) in 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, to 4 DM RS dynamic cyclic shift amounts of UE configuration, in format X, with the DMRS dynamic cyclic shift parameters of 2 bits, to indicate 2 groups of DMRS dynamic cyclic shift amounts.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) in 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 2 DMRS dynamic cyclic shift amounts of UE configuration, in format X, with the DMRS dynamic cyclic shift parameters of 3 bits, to indicate 8 groups of actual dynamic cyclic shift amounts of DMRS, 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) in DCI format X	Actual dynamic cyclic shift amount
		000	(0，6)
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, to 3 DMRS dynamic cyclic shift amounts of UE configuration, in format X, by the DMRS dynamic cyclic shift amount of 3 bits, to indicate 8 groups of DMRS dynamic cyclic shift amounts.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) in 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, to 4 DMRS dynamic cyclic shift amounts of UE configuration, in format X, with the DMRS dynamic cyclic shift parameters of 3 bits, to indicate 8 groups of DMRS dynamic cyclic shift amounts.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) in 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 be compatible with LTE, above-mentioned preferred embodiment one be to the dynamic cyclic shift parameters of the demodulated reference signal of corresponding 13 bit of each DMRS dynamic cyclic shift amount of every group in preferred embodiment six, and mapping ruler is as following table 9.

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
		100	2
101	8
		110	10
111	9

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

CS _k=(F _q+ k * (12/n)) mod12, wherein, the number of plies that n is subscriber equipment, q is DMRS dynamic cyclic shift parameters, 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 equates with the number of plies, the mapping relations of DMRS dynamic cyclic shift amount and interlayer can be: value in actual dynamic cyclic shift amount group is started to high level mapping or from high level, starts to shine upon to low layer successively from low layer successively.

Preferably, when the actual dynamic cyclic shift amount number to UE configuration and the number of plies are when unequal (now the number of plies is greater than the number of DMRS dynamic cyclic shift amount), DMRS dynamic cyclic shift amount with the mapping relations of interlayer can be: different layers corresponding to 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, referred to as OC code) distinguish, Fig. 4 distinguishes according to the orthogonal code of the embodiment of the present invention schematic diagram that same code word different layers is led order, 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 are multiplied by (1 in time domain,-1), be equivalent to second symbol time domain anti-phase.Different code words adopts respectively different dynamic cyclic shift values, value in DMRS dynamic cyclic shift amount group can be started to high level mapping or from high level, starts to shine upon to low layer successively from low layer successively.

Preferably, whether adopt OC code, can indicate with 1 bit signalling (or triggering).For example, when the signaling of triggering OC code is 0, represent to equate with the number of plies to the actual dynamic cyclic shift amount number of UE configuration; When the signaling of triggering OC code is 1, represent to actual dynamic cyclic shift amount number and the number of plies of UE configuration unequal.

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

Mode one

In the situation that DMRS time domain orthogonal code enables, the layer at same code word place is used 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 started to high level mapping from the low layer of subscriber equipment successively, or from high level, starts to shine upon to low layer successively.

Mode two

In the situation that DMRS time domain orthogonal code enables, the number of plies at subscriber equipment is 3, 4, and in the situation that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift parameters comprises is 2, the corresponding cyclic shift amount of each streams of code words, layer corresponding to each streams of code words used 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 streams of code words is corresponding one deck only, time domain orthogonal code corresponding to one deck demodulated reference signal corresponding to code word is (1, 1), if a streams of code words correspondence is two-layer, time domain orthogonal code corresponding to two-layer demodulated reference signal corresponding to code word is for being respectively (1, 1), (1,-1),

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

Mode three

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

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

Preferably, whether adopt OC code and adopt which kind of mode to process to adopt two independent bits to indicate respectively, also can share 1 bit; If the bit being used to indicate is arranged in DRMS dynamic cyclic shift parameters, so, the expense of this parameter is just 3 bits, 4 bits or this 5 bit.

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

Preferably, while having configured a group demodulation reference signal dynamic cyclic shift amount in DCI format UE upstream components carrier wave, now the DMRS dynamic cyclic shift parameters in the streams of code words 1 of this component carrier and/or the PHICH of streams of code words 2 mapping formula is the dynamic cyclic shift parameters of demodulated reference signal corresponding to lowermost layer in this streams of code words place layer or top actual dynamic cyclic shift amount; Or, the minimum or top DMRS dynamic cyclic shift amount in the streams of code words place layer on upstream components carrier wave directly can also be shone upon to the n in formula as the physical mixing retransmission indicating chanel PHICH of streams of code words _dMRS.Below this is illustrated.

For example, on certain component carrier of UE upstream multi-antenna transmission subframe, only has a streams of code words, the dynamic cyclic shift parameters of the demodulated reference signal that the dynamic cyclic shift parameters selection lowermost layer of the demodulated reference signal in the now PHICH of this streams of code words mapping formula or top actual dynamic cyclic shift amount are corresponding.

For example, while having 2 streams of code words on certain component carrier of UE upstream multi-antenna transmission subframe, now the dynamic cyclic shift parameters of the demodulated reference signal in the streams of code words 1 of this component carrier or the PHICH of streams of code words 2 mapping formula is the dynamic cyclic shift parameters of demodulated reference signal corresponding to lowermost layer in this streams of code words place layer or top actual dynamic cyclic shift amount.

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

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

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

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

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 now the number of plies is 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, if this 2 bit is 01, as shown in table 3, represents that one group of corresponding actual dynamic cyclic shift amount is (2,8).

Value in DMRS dynamic cyclic shift amount group can be according to the principle starting from low layer to high level mapping, also can to low layer, shine upon according to starting from high level.At this, to start being mapped as example to high level from low layer, describe.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, 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 now the number of plies is 4, layer 1 is to layer 4, 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, represent that one group of corresponding actual dynamic cyclic shift amount is (0,3,6,9) (as shown in table 5).

In DMRS dynamic cyclic shift amount group, value can be according to starting from low layer to the principle of high level mapping, 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, so select low layer cyclic shift parameter to shine upon according to signaling value 0 indication of another increasing 1 bit, 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 now the number of plies is 4, layer 1 is to layer 4, and in format X, the DMRS dynamic cyclic shift parameters with 3 bits distributes 4 DMRS dynamic cyclic shift amounts to UE, if this 3 bit is 010, represent that one group of corresponding DMRS dynamic cyclic shift amount is (3,6,9,0) (as shown in table 8).

In DMRS dynamic cyclic shift amount group, value can be according to starting from low layer to the principle of high level mapping, 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, during PHICH resource mapping, adopt the low layer parameter at streams of code words place to shine upon, 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

On UE upstream multi-antenna transmission real component carrier wave 1, only send 1 streams of code words, this streams of code words is mapped on 2 layers: layer 1 and layer 2, and DM RS corresponding 1 actual dynamic cyclic shift amount, now the PHICH resource mapping formula of this streams of code words of every one deck:

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

in n _dMRSfor the actual dynamic cyclic shift amount of low 1 correspondence layer by layer corresponding DM RS dynamic cyclic shift parameters (as shown in table 9) in table 9.

Preferred embodiment 11

On UE upstream multi-antenna transmission real component carrier wave 1, send 2 streams of code words: streams of code words 1 and streams of code words 2, streams of code words 1 is mapped on layer 1, streams of code words 2 is mapped on layer 2, according to the related signaling of PDCCH, corresponding 1 the actual dynamic cyclic shift amount of DMRS that draws every one deck, 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, now PHICH resource mapping 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 _dMRSfor 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 _dMRSfor 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

On UE upstream multi-antenna transmission real component carrier wave 1, send 2 streams of code words, streams of code words 1 is mapped on layer 1 and layer 2, streams of code words 2 is mapped on layer 3 and layer 4, according to the related signaling of PDCCH, draw corresponding 1 the actual dynamic cyclic shift amount of DMRS of every one deck, 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, now the PHICH resource mapping formula of streams of code words 1:

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

in n _dMRSfor 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 _dMRSfor 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 different PHICH.

Preferred embodiment 13

On UE upstream multi-antenna transmission real component carrier wave 1, send 2 streams of code words, and adopt layer to switch (LS) technology, PHICH resource mapping formula now:

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

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

Preferred embodiment 14

On UE upstream multi-antenna transmission real component carrier wave 1, send 2 streams of code words: streams of code words 1 and streams of code words 2, streams of code words 1 is mapped on layer 1, streams of code words 2 is mapped on layer 2, according to the related signaling of PDCCH, corresponding 1 the actual dynamic cyclic shift amount of DMRS that draws every one deck, 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, now PHICH resource mapping 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 _dMRSfor the actual dynamic cyclic shift amount 2 of layer 1 correspondence, n _dMRS=2, the n of streams of code words 2 _dMRSfor the actual dynamic cyclic shift amount 8 of layer 2 correspondence, n _dMRS=8.

In sum, by the above embodiment of the present invention, solve the larger problem of signaling consumption while existing to the suitable DMRS cyclic shift relevant parameter of each layer of configuration of UE in correlation technique, and then reduced signaling consumption, improved efficiency.In addition, also clear and definite under LTE-A upstream multi-antenna scene, in user PHICH mapping formula, use DMRS dynamic cyclic shift parameters corresponding to which DMRS dynamic cyclic shift amount.

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

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

Claims (28)

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

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

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

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 at least comprises:

In the situation that the quantity of the DMRS dynamic cyclic shift amount that one group of DMRS dynamic cyclic shift amount comprises is 2, the DMRS dynamic cyclic shift parameters of described 2 bits be used to indicate in the dynamic cyclic shift amount of 4 groups of DMRS one of;

In the situation that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises is 3, the DMRS dynamic cyclic shift parameters of described 2 bits be used to indicate in the dynamic cyclic shift amount of 3 groups of DMRS one of;

In the situation that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises is 4, the DMRS dynamic cyclic shift parameters of described 2 bits be used to indicate in the dynamic cyclic shift amount of 2 groups of DMRS one of.

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

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

7. method according to claim 2, is characterized in that, in the situation that described DMRS dynamic cyclic shift parameters is 3 bit, 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, the number of plies that n is described subscriber equipment, q is described DMRS dynamic cyclic shift parameters, k=0 ..., n-1, n=1,2,3,4, q=o, 1,2,3,4,5,6,7, at q=o, 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, in the situation that the quantity of the dynamic cyclic shift amount of the DMRS that one group of DMRS dynamic cyclic shift amount comprises is 1,2,3 or 4, the DMRS dynamic cyclic shift parameters of described 3 bits be used to indicate in the dynamic cyclic shift amount of 8 groups of DMRS one of.

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

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

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

12. methods according to claim 8, is characterized in that, in the situation that the quantity of the dynamic cyclic shift amount of the DMRS that the dynamic cyclic shift amount of one group of DMRS comprises is 4, the dynamic cyclic shift amount of described 8 groups of DMRS is: (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).

13. according to the method described in any one in claim 9 to 12, it is characterized in that, described 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.

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

In the situation that the quantity of the DMRS dynamic cyclic shift amount that described one group of DMRS dynamic cyclic shift amount comprises equates with the number of plies of described subscriber equipment, the value of the DMRS dynamic cyclic shift amount in described one group of DMRS dynamic cyclic shift amount is started to high level mapping from the low layer of described subscriber equipment successively, or successively from described high-rise beginning to described low layer mapping.

15. methods according to claim 1, is characterized in that, carry and be used to indicate the first indication information whether DMRS time domain orthogonal code enables in described descending control information format.

16. methods according to claim 15, is characterized in that, described in to be used to indicate the first indication information whether DMRS time domain orthogonal code enable be 1 bit.

17. methods according to claim 15, it is characterized in that, in described descending control information format, carry the second indication information, wherein, described the second indication information is used to indicate according to processing mode two or processing mode three and processes, or the second indication information user indication is processed according to processing mode one or described processing mode three.

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

In the situation that described DMRS time domain orthogonal code enables, the layer at same code word place is used 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 is started to high level mapping from the low layer of described subscriber equipment successively, or successively from described high-rise beginning to described low layer mapping.

19. according to the method described in claim 15 or 17, it is characterized in that, after described subscriber equipment gets one group of DMRS dynamic circulation displacement that described DMRS dynamic cyclic shift parameters is corresponding, in the situation that described DMRS time domain orthogonal code enables, use processing mode two to process, wherein, described processing mode two comprises:

The number of plies at described subscriber equipment is 3, 4, and in the situation that the quantity of the dynamic cyclic shift amount of the DMRS that described one group of DMRS dynamic cyclic shift parameters comprises is 2, the corresponding cyclic shift amount of each streams of code words, layer corresponding to each streams of code words used 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 streams of code words is corresponding one deck only, time domain orthogonal code corresponding to one deck demodulated reference signal corresponding to described code word is (1, 1), if a streams of code words correspondence is two-layer, time domain orthogonal code corresponding to two-layer demodulated reference signal corresponding to described code word is for being respectively (1, 1), (1,-1),

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

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

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

21. according to the method described in claim 15 or 17, it is characterized in that, described the first indication information and described the second indication information are two independently 1 bit signallings, or described the first indication information and described the second indication information share 1 bit signalling; In the situation that described the first indication information and described the second indication information are carried on described DMRS dynamic cyclic shift parameters, described DMRS dynamic circulation parameter is 3 bits, 4 bits or 5 bits.

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

In the situation that described demodulated reference signal DMRS time domain orthogonal code does not enable, the time domain orthogonal code corresponding to demodulated reference signal of described every layer is (1,1).

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

Minimum or top DMRS dynamic cyclic shift amount in streams of code words place layer on described upstream components carrier wave is directly shone upon to the n in formula as the physical mixing retransmission indicating chanel PHICH of streams of code words _dMRScalculate the PHICH mapping of described streams of code words.

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

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

The n in the physical mixing retransmission indicating chanel PHICH mapping formula of streams of code words using minimum in the streams of code words place layer on described upstream components carrier wave or DMRS dynamic cyclic shift parameters that top DMRS dynamic cyclic shift amount is corresponding _dMRScalculate the PHICH mapping of described streams of code words.

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

At described upstream components carrier wave, there are two streams of code words, and use in the situation that layer switches, by minimum in all layers at two streams of code words places on described upper component carrier or DMRS dynamic cyclic shift parameters that top DMRS dynamic cyclic shift amount is corresponding 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 the method described in claim 23 or 25 or 26, it is characterized in that, in described descending control information format, carry the information of being used to indicate, wherein, described indication information is used to indicate and uses lowermost layer or DMRS dynamic cyclic shift parameters corresponding to top DMRS dynamic cyclic shift amount.

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

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