CN100433608C - Method for decoding processing - Google Patents

Abstract

The present invention relates to a method for carrying out decoding processing, which has the core that firstly, the size of an E-TFCS set is defined in a cell in E-TFCS information of an E-DCH transmitted to a NodeB and a UE under an RNC, and then a base station carries out the decoding processing on the information in an E-DPCCH on the basis of the defined E-TFCS set. Through the present invention, the E-TFCS information of the E-DCH can be flexibly configured, and simultaneously the decoding processing procedures of the E-DPCCH are simplified so as to increase the speed of decoding the E-DPCCH and do not influence the capacity grade of the UE.

Description

Decipher the method for processing

Technical field

The present invention relates to the communications field, relate in particular to a kind of method of deciphering processing.

Background technology

WCDMA R6 version is introduced HSUPA (access of high speed uplink bag) technology, at up E-DPCCH (E-DCH Dedicated Physical Control Channel) and the E-DPDCH (E-DCH Dedicated Physical Data Channel) of having increased.In described E-DPCCH, carried following control information:

Re-transmission sequence number (RSN): xrsn, 1, xrsn, 2

E-TFCI information (indication of E-DCH transformat combination): xtfci, 1, xtfci, 2 ..., xtfci, 7 " Happy " bit: xh, 1

In the process that communicates, at first UE (subscriber equipment) encodes to the control information among the described E-DPCCH, information after will encoding by wireless channel then and the data among the described E-DPDCH are sent to (base station), the E-TFCS that NodeB issues according to RNC (base station controller) (E-DCH transport format combination set) information is deciphered the information among the described E-DPCCH.

UE process that the control information among the described E-DPCCH is encoded wherein as shown in Figure 1, specifically describes as follows:

Step 1, to the information among the described E-DPCCH, E-TFCI information xtfci, 1, xtfci, 2 ..., xtfci, 7, re-transmission sequence number xrsn, 1, xrsn, 2, and " Happy " bit xh, 1 carries out multiplexingly, forms the E-DPCCH output sequence of 10bit: x1, x2 ..., x10, multiplexing rule is as follows:

xk＝xh，1 k＝1

xk＝xrsn，4-k k＝2，3

xk＝xtfci，11-k k＝4，5，...，10

Step 2, the output sequence x1 multiplexing to E-DPCCH, x2 ..., x10 carries out chnnel coding.

The channel coding method of E-DPCCH is identical with TFCI coded system in the Release 1999, adopts the subcode of 2 rank Reed-Muller coding.At the multiplexing output sequence x1 of E-DPCCH, x2 ..., when x10 carries out chnnel coding, adopt following formula 1.

$z_i=\underset{n=0}{\overset{9}{\mathrm{\Σ}}}(x_{n+1}\×M_{i,n})\mathrm{mod}2$ I=0,1 ..., 29 formula 1

Step 3 is carried out physical channel mapping (Physicalchannel mapping) to the information that obtains of carrying out after the chnnel coding, just, the output sequence after the described chnnel coding is mapped in the physical channel and by eating dishes without rice or wine propagates.

Foregoing description the process that the information among the described E-DPCCH is encoded, can use for reference the TFCI interpretation method for E-DPCCH fully in the decoding of NodeB side, interpretation method commonly used is as follows:

If E-DPCCH is soft information S0, S1...S29 constitutes the input vector A of 30 dimensions, and B is (N, 30) Hadamard matrix, A*B is the output vector C of N dimension, maximizing in N dimensional vector C, and the described peaked position that obtains is exactly the decode results of E-DPCCH.Wherein the value of the value of N and E-DPCCH 10 bit output sequences after multiplexing has relation, and maximum occurrences is 1024.

Because E-DPCCH decoding will be carried out a large amount of related operations, if N=1024, an E-DPCCH decoding needs to carry out 1024*30=30720 time multiply-add operation at least so, and computing expense like this is too big.

By foregoing description as can be seen in described E-DPCCH information bit E-TFCI account for 7bit, 25.321 in the agreement E-DCH (strengthening the shape dedicated transmission channel) has been defined four kinds of transmission parameter tables, E-TFCI is used for concrete transformat in the index transmission parameter table, the size of four kinds of transmission parameter tables is respectively 128,126,128,121.E-TFCS is the transport format combination set of E-DCH, the E-TFCS collection does not need to support the complete or collected works of transmission parameter table in the practical application, for example, if E-TFCS collection size is reduced to 64, E-TFCI significant bit number just can be changed into 6, like this when E-DPCCH is deciphered, the dimension of Hadamard matrix just can be changed into 512, as seen decoding speed can double, and the E-TFCS collection is more little, and decoding speed is just fast more.

Foregoing description be R6 version after Luent makes amendment to E-DPCCH information bit multiplex mode in the motion in March, 2005, its objective is that the span of output sequence is continuous after making E-DPCCH multiplexing, make things convenient for E-DPCCH decoding, the Hadamard matrix index can be continuous.

Below contrast in March, 2005 version and in June, 2005 version amended scheme is described, can be easy to see that the version in June, 2005 can be obtained the effect of simplifying the E-DPCCH decoding algorithm and improving the E-DPCCH decoding speed.

In March, 2005, version E-DPCCH information bit multiplex mode was as follows:

xk＝xrsn，k k＝1，2

xk＝xtfci，k-2 k＝3，4，...，9

xk＝xh.1 k＝10

Suppose RSN maximum occurrences 3, TFCI span 0～3.

If adopt in March, 2005 version, the value of E-DPCCH is 0～3,128～131 so, 256～259,384～387,512～515,640～643,768～771 and 896～899, and inconvenience when E-DPCCH deciphers like this, the E-DPCCH span is too big.

If adopt in June, 2005 version, the E-DPCCH span becomes 0～31 so, and the Hadamard matrix dimension becomes 32 during E-DPCCH decoding, and decoding speed can improve greatly.

From top introduction, industry all is being simplification E-DPCCH decoding algorithm and the effort of raising E-DPCCH decoding speed, a basic principle of HSUPA technology evolution is when improving up-link capacity and covering, to existing system structure influence minimum, realize simply as far as possible, this also is a dominant direction of agreement evolution.

The technical scheme of prior art one related to the present invention is the E-TFCS information of E-DCH definition to be implemented in the R6 version in June, 2005 according to 3GPP, the E-TFCS information that the base station issues according to RNC, the detailed process that the information among described E-DPCCH and the described E-DPDCH is deciphered comprises:

Step 1, base station obtain the complete or collected works' that support the transmission parameter table information according to the E-TFCS information that RNC issues.Specific implementation process comprises:

At first the base station obtains the E-TFCS information that RNC issues, and shown in table one, table two, wherein table one is the E-TFCS collection information that the RNC of 25.433 protocol definitions is handed down to NodeB, and wherein element definitions is as follows:

IE/Group Name	Presence	Range	IE Type and Reference	Semantics Description
					E-DCH Transport Format Combination Set Index	M		INTEGER(1..4，...)	Indicates which standardised E-TFCS Transport Block Size Table shall be used.The related tables are specified in[ref FFS]
E-DCH Minimum Set E-TFCI	O		INTEGER(0..127)	For the concept of“E-DCH Minimum Set of TFCs“see[41]and[16]
					Reference E-TFCI Information		1..<maxno ofRefTFC /s>
＞Reference E-TFCI	M		INTEGER(0..127)
					＞Reference E-TFCI Power Offset	M		9.2.2.13Dp

Table one

The RNC that table two is based on 25.331 protocol definitions is handed down to the E-TFCS collection information of UE, and wherein element definitions is as follows:

Information Element/Group name	Need	Multi	Type and reference	Semantics description	Version
						E-TFCI table index	MP		Integer(0..1)	Indicates which standardised E- TFCI TB size table shall be used	REL-6
E-DCH minimum set E-TFCI	MD		Integer (0..127)	See[15]；Absence means no E-DCH minimum set
						Reference E-TFCIs	MP	1to[8]		See[29]	REL-6
＞Reference E-TFCI	MP		Integer (0..127)		REL-6
						＞Reference E-TFCI PO	MP		FFS		REL-6

Table two

Go as can be seen by first of table one, table two, cell in the E-TFCS information " E-DCHTransport Format Combination Set Index " is used for four kinds of transmission parameter tables of index E-DCH, the base station is analyzed the described E-TFCS information of obtaining, and can know that in four transmission parameter tables of this use which opens.

25.331 provided the Mathematical Modeling of four kinds of parameter lists in the agreement, E-TFCI is the index of determining of the transmission in the transmission parameter table, index is big more, and transmission block is big more.

Shown in above-mentioned table one, table two, can analyze and draw: prior art does not have out of Memory owing to only issued which uses open the information of transmission parameter table, and the size that therefore can be understood as the E-TFCS collection is the complete or collected works of the transmission parameter table that issues.

Step 2 is set up the Hadamard matrix B of (N, 30), and the value of described N is the span of the 10 bit output sequences of E-DPCCH after multiplexing, because need to support the complete or collected works of transmission parameter table, the value that can determine described N is 1024.

Step 3 according to the soft information structuring input vector of E-DPCCH A, is calculated with described matrix B, obtains N dimension output vector C.

Suppose the soft information S0 of E-DPCCH, S1...S29 constitutes the input vector A of 30 dimensions, described matrix is calculated: output vector A and Hadamard matrix B are multiplied each other, obtain N dimensional vector C.

Step 4 is selected the maximum among the described N dimensional vector C.

Step 5 is determined the decode results of E-DPCCH according to the peaked position of described selection.

The E-DPCCH decode results that step 6, basis are determined is deciphered processing to the information among the E-DPDCH.Its implementation process specifically comprises:

At first, obtain the E-TFCI value according to the E-DPCCH decode results of determining.

Then, according to the size of the described E-TFCI value index transmission block that obtains.

At last, determine length after the E-DPDCH decoding based on the size of the described transmission block that obtains.

By the technical scheme of above-mentioned prior art as can be seen: according to present agreement, the E-TFCS collection of E-DCH is the complete or collected works that will support the assigned transmission parameters table, E-TFCI value maximum still will support 127, though the CR (the bit mapping of E_DPCCH) according to Iucent has carried out the change of bit mapping order, still can't reach the purpose that reduces the E-DPCCH decoding complexity, remove the span of non-artificial qualification E-TFCI, but will pay great rate limit.

Summary of the invention

In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method of deciphering processing, by the present invention, E-TFCS information in can flexible configuration E-DCH, simplified decoding treatment process simultaneously to E-DPCCH, improved decoding speed, and do not influenced the ability rating of UE E-DPCCH.

The objective of the invention is to be achieved through the following technical solutions:

A kind of method of deciphering processing provided by the invention comprises:

A, be handed down to the size of definition E-TFCS collection in the cell in the E-DCH transport format combination set E-TFCS information of enhanced dedicated E-DCH of base station node B and user equipment (UE) in base station controller RNC;

B, base station are deciphered processing based on the size of described definition E-TFCS collection to the information among the E-DCH Dedicated Physical Control Channel E-DPCCH.

Wherein, described step B specifically comprises:

B1, base station obtain the E-TFCS information that RNC is handed down to the E-DCH of NodeB and UE;

B2, the described E-TFCS information of obtaining is analyzed, obtained the size information of E-TFCS collection;

The size information of the E-TFCS collection that B3, basis are obtained is deciphered processing to the information among the E-DPCCH.

Wherein, described step B2 specifically comprises:

B21, the described E-TFCS information of obtaining is analyzed, obtained and specify the transmission parameter table that uses;

B22, obtain the size information of E-TFCS collection according to described transmission parameter table.

Wherein, described step B3 specifically comprises:

The matrix B of B31, foundation (N, 30) is determined the value of described N according to the size of the E-TFCS collection that obtains;

B32, according to the soft information structuring input vector of E-DPCCH A, described input vector A and described matrix B are multiplied each other, obtain N dimension output vector C;

B33, the maximum of search among the described N dimensional vector C, and determine the decode results of E-DPCCH according to described peaked position.

Wherein, described steps A also comprises:

A1, be handed down to definition transmitting block index TB Index information in the cell in the E-TFCS information of E-DCH of NodeB and UE at RNC.

Wherein, described step B also comprises:

B4, based on the information of the TB Index of described definition, and the result after the E-DPCCH decoding deciphers processing to the information among the E-DCH Dedicated Physical Data Channel E-DPDCH.

Wherein, described step B4 specifically comprises:

B41, obtain the value of E-DCH transformat combination indication E-TFCI according to the decode results among the E-DPCCH;

B42, according to the described E-TFCI value that obtains, in RNC is handed down to the E-TFCS information of E-DCH of NodeB and UE, search and obtain the TB Index of described definition;

B43, use TB Index search in the transmission parameter table of described appointment and obtain the current transmission block size of E-DPDCH;

B44, determine length after the E-DPDCH decoding based on the size of the described transmission block that obtains.

As seen from the above technical solution provided by the invention, the present invention at first is handed down to the size of definition E-TFCS collection in the cell in the E-TFCS information of E-DCH of NodeB and UE at RNC; The base station is deciphered processing based on the size of described definition E-TFCS collection to the information among the E-DPCCH then.By the present invention, the E-TFCS information in can flexible configuration E-DCH has been simplified the decoding treatment process to E-DPCCH simultaneously, has improved the decoding speed to E-DPCCH, and has not influenced the ability rating of UE.

Description of drawings

Fig. 1 is E-DPCCH coding flow process;

Fig. 2 is the flow chart of embodiment provided by the invention.

Embodiment

The invention provides and a kind of E-DPCCH is deciphered the method for processing, its core is: the size that at first is handed down to definition E-TFCS collection in the cell in the E-TFCS information of E-DCH of NodeB and UE at RNC; The base station is deciphered processing based on the size of described definition E-TFCS collection to the information among the E-DPCCH then.The present invention can optimize the E-DPCCH decoding algorithm by the element definitions mode of the E-TFCS information of modification E-DCH, improves decoding speed.

The implementation process of first embodiment provided by the invention as shown in Figure 2, specifically comprises:

Step 101, base station obtain the E-TFCS information that RNC is handed down to the E-DCH of NodeB and UE.

The cell that the present invention is handed down to RNC in the E-TFCS information of E-DCH of NodeB and UE is revised, and has promptly defined the size of E-TFCS collection in the present invention, and the transformat index.When the base station gets access to RNC when being handed down to the E-TFCS information of E-DCH of NodeB and UE, also just obtain amended cell information.

Described RNC be handed down to NodeB and UE E-DCH E-TFCS information as shown in Table 3:

IE/Group Name	Presence	Range	IE Type and Reference	Semantics Description
					E-DCH Transport Format Combination Set Index	M		INTEGER(1..4，...)	Indicates which standardised E-TFCS Transport Block Size Table shall be used.The related tables are specified in [ref FFS].
E-DCH Minimum Set E-TFCI	O		INTEGER(0..127)	For the concept of“E-DCH Minimum Set of TFCs“see[41] and[16].
					E-TFCS		1..<maxno ofETFC/s>		The size of E-TFCS collection
＞TB Index			INTEGER(0..127)	The transformat index
					Reference E-TFCI Information		1..<maxno ofRefETF C/s>
＞Reference E-TFCI	M		INTEGER(0..127)
					＞Reference E-TFCI Power Offset	M		9.2.2.13Dp

Table three

By above-mentioned table three as can be seen, relative prior art, the present invention is handed down to the E-DCH of UE and NodeB to RNC the cell of E-TFCS information defines again, has increased the definition to the size of E-TFCS collection newly, as the fourth line in the table three.

Step 102, base station are analyzed the described E-TFCS information of obtaining, and obtain the size of E-TFCS collection.

In this step, the base station is analyzed the described E-TFCS information of obtaining, and at first gets access to the transmission parameter table that specify to use, then the size of the E-TFCS collection that obtains using according to described transmission parameter table.

Step 103, set up the Hadamard matrix B of (N, 30), the value of described N is the span of the bit output sequence of E-DPCCH after multiplexing, promptly determines the value of described N according to the size of the E-TFCS collection that obtains.

For example, suppose that E-TFCS collection size is at 1 o'clock, then 1 bit of a significant bit number needs of E-TFCI represents; E-TFCS collection size is 1～4 o'clock, and then 2 bit of a significant bit number needs of E-TFCI represent; E-TFCS collection size is 1～8 o'clock, and then 3 bit of a significant bit number needs of E-TFCI represent; E-TFCS collection size is 1～16 o'clock, and then 4 bit of a significant bit number needs of E-TFCI represent; E-TFCS collection size is 1～32 o'clock, and then 5 bit of a significant bit number needs of E-TFCI represent; E-TFCS collection size is 1～64 o'clock, and then 6 bit of a significant bit number needs of E-TFCI represent; E-TFCS collection size is 1～128 o'clock, and then 7 bit of a significant bit number needs of E-TFCI represent.

If E-TFCS collection scope is smaller, the significant bit number of E-TFCI can reduce greatly, E-DPCCH just can dwindle in the span of multiplexing back output sequence like this, but the scope of TB Size can not reduce, or 0～127, therefore the present invention is to the not influence of ability rating of UE, but the speed of E-DPCCH decoding can significantly improve, and configuration is more flexible.

Step 104, according to the soft information structuring input vector of E-DPCCH A, calculate with described matrix B, obtain N dimension output vector C.

Suppose the soft information S0 of E-DPCCH, S1...S29 constitutes the input vector A of 30 dimensions, described matrix is calculated: input vector A and Hadamard matrix B are multiplied each other, obtain N dimensional vector C.

Maximum among step 105, the described N dimensional vector C of search.

Step 106, determine the decode results of E-DPCCH according to described peaked position.

Step 107, utilize the result after the E-DPCCH decoding to carry out E-DPDCH decoding.

In this step, the E-TFCI among the E-DPCCH is not used for direct index transmission block size, but looks into E-TFCS table (as table three) with E-TFCI, obtains TB Index, comes index to obtain the transmission block size with TB Index then.Specific implementation process comprises:

Step 1, obtain the value of E-TFCI according to the decode results among the E-DPCCH;

Step 2, according to the described E-TFCI value that obtains look into E-TFCS table (as table three) obtain as described in the TB Index of definition;

Step 3, use TB Index search in the transmission parameter table of described appointment and obtain the current transmission block size of E-DPDCH;

Step 4, determine length after the E-DPDCH decoding based on the size of the described transmission block that obtains.

As seen from the above technical solution provided by the invention, the present invention at first is handed down to the size of definition E-TFCS collection in the cell in the E-TFCS information of E-DCH of NodeB and UE at RNC; The base station is deciphered processing based on the size of described definition E-TFCS collection to the information among the E-DPCCH then.By the present invention, the E-TFCS information in can flexible configuration E-DCH has been simplified the decoding treatment process to E-DPCCH simultaneously, has improved the decoding speed to E-DPCCH, and has not influenced the ability rating of UE.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (7)

1, a kind of method of deciphering processing is characterized in that, comprising:

A, be handed down to the size of definition E-TFCS collection in the cell in the E-DCH transport format combination set E-TFCS information of enhanced dedicated E-DCH of base station node B and user equipment (UE) in base station controller RNC;

B, base station are deciphered processing based on the size of described definition E-TFCS collection to the information among the E-DCH Dedicated Physical Control Channel E-DPCCH.

2, method according to claim 1 is characterized in that, described step B specifically comprises:

B1, base station obtain the E-TFCS information that RNC is handed down to the E-DCH of NodeB and UE;

B2, the described E-TFCS information of obtaining is analyzed, obtained the size information of E-TFCS collection;

The size information of the E-TFCS collection that B3, basis are obtained is deciphered processing to the information among the E-DPCCH.

3, method according to claim 2 is characterized in that, described step B2 specifically comprises:

B21, the described E-TFCS information of obtaining is analyzed, obtained and specify the transmission parameter table that uses;

B22, obtain the size information of E-TFCS collection according to described transmission parameter table.

4, method according to claim 2 is characterized in that, described step B3 specifically comprises:

The matrix B of B31, foundation (N, 30) is determined the value of described N according to the size of the E-TFCS collection that obtains;

B32, according to the soft information structuring input vector of E-DPCCH A, described input vector A and described matrix B are multiplied each other, obtain N dimension output vector C;

B33, the maximum of search among the described N dimensional vector C, and determine the decode results of E-DPCCH according to described peaked position.

5, according to claim 3 or 4 described methods, it is characterized in that described steps A also comprises:

A1, be handed down to definition transmitting block index TB Index information in the cell in the E-TFCS information of E-DCH of NodeB and UE at RNC.

6, method according to claim 5 is characterized in that, described step B also comprises:

B4, based on the information of the TB Index of described definition, and the result after the E-DPCCH decoding deciphers processing to the information among the E-DCH Dedicated Physical Data Channel E-DPDCH.

7, method according to claim 6 is characterized in that, described step B4 specifically comprises:

B41, obtain the value of E-DCH transformat combination indication E-TFCl according to the decode results among the E-DPCCH;

B42, according to the described E-TFCI value that obtains, in RNC is handed down to the E-TFCS information of E-DCH of NodeB and UE, search and obtain the TB Index of described definition;

B43, use TB Index search in the transmission parameter table of described appointment and obtain the current transmission block size of E-DPDCH;

B44, determine length after the E-DPDCH decoding based on the size of the described transmission block that obtains.

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