CN101232353A - Method for indicating HS-PDSCH channel modulation mode - Google Patents
Method for indicating HS-PDSCH channel modulation mode Download PDFInfo
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- CN101232353A CN101232353A CNA2008100567670A CN200810056767A CN101232353A CN 101232353 A CN101232353 A CN 101232353A CN A2008100567670 A CNA2008100567670 A CN A2008100567670A CN 200810056767 A CN200810056767 A CN 200810056767A CN 101232353 A CN101232353 A CN 101232353A
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Abstract
The invention discloses a method for instructing the HS-PDSCH channel modulation modes. The method is based on the prior HS-SCCH codec, the xor calculation is carried out by the CRC tail bit information which is generated by using another sequence of the terminal identification information and the HS-SCCH control information, the HS-PDSCH channel modulation modes are represented by using 1 bit of HS-PDSCH channel modulation mode information domain which is combined with the sequence mode of the terminal identification information, so the HS-SCCH channel in a TD-SCDMA system can be used for instructing more than two HS-PDSCH channel modulation modes.
Description
Technical field
The present invention relates to moving communicating field, particularly a kind of method that is used for the indication HS-PDSCH of TD-SCDMA system channel modulation mode.
Background technology
In TD SDMA (TD-SCDMA) mobile communication system, for the descending throughput that increases system and the peak rate of unique user, high speed downlink packet access (High SpeedDownlink Packet Access, HSDPA) technology have been introduced.User's downlink data of using this technology is in a special shared channel-high speed down sharing physical channel (High Speed-Physical DownlinkShared Channel, HS-PDSCH) upward transmission.For variation fast reaction, the NodeB that is controlled at of the transmission means of HS-PDSCH channel is carried out, rather than carry out at radio network controller (RNC) as other traditional businesses to channel.
NodeB by special shared physical channel-High-Speed Shared Control Channel (HighSpeed-Shared Control Channel HS-SCCH) controls the transmission means of HS-PDSCH channel, and Control Parameter is as follows:
-spreading code set information (8 bit): x
Ccs, 1, x
Ccs, 2... x
Ccs, 8
-gap information (5 bit): x
Ts, 1, x
Ts, 2... x
Ts, 5
-modulation system information (1 bit): x
Ms, 1
-transport block size information (6 bit): x
Tbs, 1, x
Tbs, 2... x
Tbs, 6
-hybrid automatic repeat request process information (3 bit): x
Hap, 1, x
Hap, 2... x
Hap, 3
-redundancy version information (3 bit): x
Rv, 1, x
Rv, 2, x
Rv, 3
-new data indication (1 bit): x
Nd, 1
-HS-SCCH cyclic sequence number (3 bit): x
Hcsn, 1, x
Hcsn, 2, x
Hcsn, 3
-terminal iidentification number (16 bit): x
Ue, 1, x
Ue, 2... x
Ue, 16
Wherein modulation system is with the x of 1 bit
Ms, 1Indicate its implication such as following table:
| x ms，1 | Modulation system |
| 0 | |
| 1 | 16-QAM |
Wherein, QPSK represents quadriphase PSK, and 16-QAM represents 16 rank quadrature amplitude modulation.
HS-SCCH chnnel coding, multiplexing flow process are as shown in Figure 1.
The step 101 of Fig. 1 goes up the multiplexing of loaded information for HS-SCCH, is multiplexed into bit sequence a according to following rule
1, a
2... a
A:
a
1，a
2...a
8＝x
ccs，1，x
ccs，2...x
ccs，8
a
9，a
10...a
9+n-1＝x
ts，1，x
ts，2...x
ts，n
a
9+n＝x
ms，1
a
9+n+1，a
9+n+2...a
9+n+m＝x
tbs，1，x
tbs，2...x
tbs，m
a
10+n+m，a
11+n+m，a
12+n+m＝x
hap，1，x
hap，2，x
hap.3
a
13+n+m，a
14+n+m，a
15+n+m＝x
rv，1，x
rv，2，x
rv，3
a
16+n+m＝x
nd，1
a
17+n+m，a
18+n+m，a
19+n+m＝x
hcsn，1，x
hcsn，2，x
hcsn.3
The step 102 of Fig. 1 is according to bit sequence a
1, a
2... a
A, calculate the CRC parity check code of 16 bits, obtain bit sequence y
1, y
2... y
16The identification information of 16 bits that this 16 bit parity sign indicating number and each terminal are exclusive carries out XOR, and operation result is attached to bit sequence a
1, a
2... a
AAfterwards, generate bit sequence b
1, b
2... b
B:
b
i＝a
i i＝1，2，...A
b
i＝(y
i-A+x
ue，i-A)mod2 i＝A+1，...B
Wherein, B-A=16.
The step 103 of Fig. 1 is a chnnel coding, and step 104 is a rate-matched, and step 105 is for interweaving, and step 106 is cut apart for physical channel, and step 107 is the mapping of physical channel.In the TD-SCDMA system, because chnnel coding, physical channel resources, the interleaving mode of HS-SCCH all fix, so step 103,104,105 and 106 operation all are the same for each HS-SCCH channel.
Terminal after receiving the HS-SCCH channel, the method that adopts Fig. 2 to the information of HS-SCCH channel decode, demultiplexing.
The step 201 of Fig. 2 is the physical channel decoding, and step 202 is deinterleaving, and step 203 is for separating rate-matched, and step 204 is a channel-decoding.Because the channel of HS-SCCH is separated coding, physical channel resources, deinterleaving mode and all fixed, so step 201,202,203 and 204 operation fix for terminal, and all be the same for each HS-SCCH channel.
The step 205 of Fig. 2 is the terminal iidentification coupling.Because HS-SCCH is shared channel, a HS-SCCH channel might control that any one carries out the terminal of HSDPA business the sub-district in, but can only control a terminal in each moment.Each terminal has unique identification information of one 16 bit.Whether terminal is the HS-SCCH channel of this terminal of control for the HS-SCCH channel of confirming current transmission, need use the identification information of this terminal to carry out matching operation to the information behind this HS-SCCH channel-decoding, and one of its concrete grammar is as described below:
With the identification information of terminal and the information b behind the channel-decoding
1, b
2... b
BBack 16 bits carry out XOR, operation result is attached to bit sequence b
1, b
2... b
AAfterwards, generate bit sequence d
1, d
2... d
B:
d
i＝b
i i＝1，2，...A
d
i＝(b
i-A+x
ue，i-A)mod2 i＝A+1，...B
Wherein, B-A=16.
With bit sequence d
1, d
2... d
BBe input to CRC parity check maker, if the output result is complete 0, think that then the match is successful, this HS-SCCH is the control channel of this terminal, enters step 206; If the output result be complete 0, think that then coupling gets nowhere, this HS-SCCH is not the control channel of this terminal, no longer carries out the step of back.
The step 206 of Fig. 2 is the identification information that uses terminal after the match is successful, and the information that obtains behind the channel-decoding is removed last 16 bit CRC parity check bits, is input to step 207.
The step 27 of Fig. 2 is for carrying out demultiplexing with the information of the output of step 206, with the information mapping of correspondence to corresponding information field.
In order further to improve the peak rate of terminal, in the TD-SCDMA system, introduced the more modulation system of high-order of HS-PDSCH channel, therefore the possible modulation system of HS-PDSCH channel increases to three or more in the TD-SCDMA system.By above description as can be known, have only 1 bit to be used to refer to modulation system in the control information of existing HS-SCCH, can not satisfy the demand of the indication of HS-PDSCH channel modulation mode after more high-order modulating adds.Therefore, after more the modulation system of high-order is introduced, need to seek the modulation system that other mode is indicated the HS-PDSCH channel.
Summary of the invention
The method that the purpose of this invention is to provide a kind of HS-PDSCH of indication channel modulation mode, have only 1 bit to be used to refer to modulation system to solve in the existing TD-SCDMA system in the HS-SCCH channel, can't indicate technical problem more than two kinds HS-PDSCH channel modulation mode.
For solving the problems of the technologies described above, it is as follows to the invention provides technical scheme:
A kind of method of indicating the HS-PDSCH channel modulation mode is used for the TD-SCDMA system, comprises the steps:
Before A, network terminal are encoded to the HS-SCCH channel, the other ordering of selecting terminal identification information or terminal identification information is carried out XOR with the CRC tail bit information of HS-SCCH control information generation, uses the HS-SCCH channel modulation mode information field of 1 bit to represent the modulation system of HS-PDSCH channel in conjunction with the sortord of terminal identification information;
After B, terminal are decoded to the HS-SCCH channel, use the identification information of this terminal and the other ordering of identification information and the information behind the HS-SCCH channel-decoding to mate respectively, the sortord of the identification information that uses when the match is successful is determined the modulation system of HS-PDSCH channel in conjunction with the HS-SCCH channel modulation mode information field of 1 bit.
Above-mentioned method, in the steps A, network terminal uses the HS-SCCH channel modulation mode information field of 1 bit and the former ordering of terminal identification information to represent that the modulation system of HS-PDSCH channel is first and second kind modulation system; Use the HS-SCCH channel modulation mode information field of 1 bit and the other ordering of terminal identification information to represent that the modulation system of HS-PDSCH channel is third and fourth kind modulation system.
Above-mentioned method, among the step B, terminal during as the former ordering of terminal identification information, determines that the HS-SCCH channel modulation mode information field of described 1 bit is first and second kind modulation system at the sortord of the described identification information that uses when the match is successful; During as the other ordering of terminal identification information, determine that the HS-SCCH channel modulation mode information field of described 1 bit is third and fourth kind modulation system at the sortord of the described identification information that uses when the match is successful.
Above-mentioned method wherein, also comprises before the steps A: terminal reports this terminal whether to support HS-PDSCH channel modulation mode more than two kinds to network terminal; In the steps A, network terminal is when determining that terminal is not supported more than two kinds HS-PDSCH channel modulation mode, directly select the CRC tail bit information of terminal identification information and HS-SCCH control information generation to carry out XOR, use the HS-SCCH channel modulation mode information field of 1 bit to represent the modulation system of HS-PDSCH channel.
Above-mentioned method, among the step B, terminal is when determining that this terminal is not supported more than two kinds HS-PDSCH channel modulation mode, directly use identification information of this terminal and the information behind the HS-SCCH channel-decoding to mate, and when the match is successful, determine the modulation system of HS-PDSCH channel according to the HS-SCCH channel modulation mode information field of 1 bit.
Above-mentioned method wherein, also comprises before the steps A: the make an appointment other sortord of terminal identification information of network terminal and terminal.
Above-mentioned method, wherein, the other ordering of described terminal identification information is the backward of terminal identification information.
By above technical scheme provided by the invention as can be seen, the present invention is on the basis of existing HS-SCCH encoding and decoding, carry out XOR by the other ordering of use terminal identification information and the CRC tail bit information of HS-SCCH control information generation, and the HS-SCCH channel modulation mode information field that uses 1 bit is represented the modulation system of HS-PDSCH channel in conjunction with the sortord of terminal identification information, make in the TD-SCDMA system, can indicate HS-PDSCH channel modulation mode by the HS-SCCH channel more than two kinds.
Description of drawings
Fig. 1 is the coding flow chart of prior art network terminal HS-SCCH channel;
Fig. 2 is the decoding process figure of prior art terminal HS-SCCH channel;
Fig. 3 is the particular flow sheet of steps A 1 in the method for the embodiment of the invention;
Fig. 4 is the particular flow sheet of step B2 in the method for the embodiment of the invention.
Embodiment
The present invention is described further below in conjunction with the drawings and specific embodiments.In the method for the invention, terminal can be earlier reports this terminal whether to support HS-PDSCH channel modulation mode more than two kinds to network terminal, if adopt following embodiment indicating modulation mode; Otherwise, adopt existing mode indicating modulation mode.
Particularly, adopt following steps in network terminal:
A1, network terminal are come selecting modulation mode information field x according to modulation system
Ms, 1Value and still be that the CRC tail bit information that generates of its backward and HS-SCCH control information carries out XOR with terminal identification information, and operation result is attached to after the described control information;
A2, network terminal according to the step 103,104,105,106,107 of Fig. 1 carry out chnnel coding, rate-matched respectively, interweave, physical channel segmentation and physical channel mapping.
Wherein said steps A 1 is on the basis of existing HS-SCCH coding, other ordering by selecting terminal identification information or terminal identification information is carried out XOR with the CRC tail bit information of HS-SCCH control information generation, thereby uses the HS-SCCH channel modulation mode information field of 1 bit to represent the modulation system of HS-PDSCH channel in conjunction with the sortord of terminal identification information.For example, network terminal uses the HS-SCCH channel modulation mode information field of 1 bit and the former ordering of terminal identification information to represent that the modulation system of HS-PDSCH channel is first and second kind modulation system; Use the HS-SCCH channel modulation mode information field of 1 bit and the backward of terminal identification information to represent that the modulation system of HS-PDSCH channel is third and fourth kind modulation system.So, solved 1 bit information in the HS-SCCH information field and can't indicate problem more than two kinds of modulation systems.
Need to prove that the other ordering of the terminal identification information of mentioning is an example with its backward here, but the present invention is not limited to this, can also adopts other any sortord.This needs network terminal and terminal to arrange in advance, and method promptly of the present invention also comprised before steps A: the make an appointment other sortord of terminal identification information of network terminal and terminal.
And, though more than for example understand respectively the indicating means of first and second kind modulation system and third and fourth kind modulation system, but what those of ordinary skills expected easily is, can also increase the sortord of terminal identification information, a kind of sortord of every increase, just can indicate two kinds of modulation systems, implementation method is similar, repeats no more here more.
Please refer to Fig. 3, steps A 1 is specific as follows:
Step 301, judge whether the modulation system of HS-PDSCH is one of first kind of modulation system and second kind of modulation system, if, enter step 302, otherwise, step 307 entered;
Step 302～304, judge whether the modulation system of HS-PDSCH is first kind of modulation system, if, with modulation system information x
Ms, 1Be changed to 0, otherwise, with modulation system information x
Ms, 1Be changed to 1;
Step 305, with x
Ms, 1Multiplexing with other control informations;
Step 306, the CRC tail bit of terminal identification information and the control information of multiplexing back is carried out XOR, operation result is attached to after the multiplexing control information, go to steps A 2 then;
Step 307～309, judge whether the modulation system of HS-PDSCH is the third, if, with modulation system information x
Ms, 1Be changed to 0, otherwise, with modulation system information x
Ms, 1Be changed to 1;
Step 310, with x
Ms, 1Multiplexing with other control informations;
Step 311, the CRC tail bit of the backward of terminal identification information and multiplexing back control information is carried out XOR, operation result is attached to after the multiplexing control information, go to steps A 2 then.Step 311 is specific as follows:
If the control information after multiplexing is bit sequence a
1, a
2... a
A, according to bit sequence a
1, a
2... a
A, can calculate the CRC parity check code of 16 bits, obtain bit sequence y
1, y
2... y
16, the identification information of terminal is x
Ue, 1, x
Ue, 2... x
Ue, 16, then its backward is x
Ue, 16, x
Ue, 15... x
Ue, 1The backward of terminal identification information and the CRC tail bit of multiplexing back control information are carried out XOR, and be attached to after the multiplexing information bit sequence, obtain bit sequence b '
1, b '
2... b '
B:
b′
i＝a
i i＝1，2，...A
b′
i＝(y
i-A+x
ue，17-(i-A))mod2 i＝A+1，...B
Wherein, B-A=16.
In terminal, adopt following steps:
B1, terminal receive the HS-SCCH information that network terminal sends, and carry out physical channel decoding, deinterleaving respectively, separate rate-matched, channel-decoding according to the step 201,202,203,204 of Fig. 2;
B2, terminal use the identification information of this terminal and the backward of identification information and the information behind the HS-SCCH channel-decoding to mate respectively, and the sortord of the identification information that uses when the match is successful is determined the modulation system of HS-PDSCH channel in conjunction with the HS-SCCH channel modulation mode information field of 1 bit.
For example, terminal during as the former ordering of terminal identification information, determines that the HS-SCCH channel modulation mode information field of described 1 bit is first and second kind modulation system at the sortord of the described identification information that uses when the match is successful; During as the other ordering of terminal identification information, determine that the HS-SCCH channel modulation mode information field of described 1 bit is third and fourth kind modulation system at the sortord of the described identification information that uses when the match is successful.
Please refer to Fig. 4, step B2 is specific as follows:
The method of step 402, terminal employing Fig. 2 step 206 and step 207 solves the control information of HS-SCCH, obtains indicating the x of HS-PDSCH channel modulation mode
Ms, 1
Step 403～405, terminal judges x
Ms, 1Whether be 0, if the modulation system of determining the HS-PDSCH channel is first kind of modulation system, otherwise the modulation system of determining the HS-PDSCH channel is second kind of modulation system, after determining modulation system, and process ends;
Whether step 406, terminal judges self support the third or the 4th kind of modulation system, if, enter step 407, otherwise, step 412 entered;
Step 409～411, terminal judges x
Ms, 1Whether be 0, if the modulation system of determining the HS-PDSCH channel is the third modulation system, otherwise the modulation system of determining the HS-PDSCH channel is the 4th a kind of modulation system, after determining modulation system, and process ends;
More than specifically described the present invention by embodiment, but those of ordinary skills know, the present invention has many distortion and variation and does not break away from spirit of the present invention, wishes that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (7)
1. a method of indicating the HS-PDSCH channel modulation mode is used for the TD-SCDMA system, it is characterized in that, comprises the steps:
Before A, network terminal are encoded to the HS-SCCH channel, the other ordering of selecting terminal identification information or terminal identification information is carried out XOR with the CRC tail bit information of HS-SCCH control information generation, uses the HS-SCCH channel modulation mode information field of 1 bit to represent the modulation system of HS-PDSCH channel in conjunction with the sortord of terminal identification information;
After B, terminal are decoded to the HS-SCCH channel, use the identification information of this terminal and the other ordering of identification information and the information behind the HS-SCCH channel-decoding to mate respectively, the sortord of the identification information that uses when the match is successful is determined the modulation system of HS-PDSCH channel in conjunction with the HS-SCCH channel modulation mode information field of 1 bit.
2. the method for claim 1 is characterized in that:
In the steps A, network terminal uses the HS-SCCH channel modulation mode information field of 1 bit and the former ordering of terminal identification information to represent that the modulation system of HS-PDSCH channel is first and second kind modulation system; Use the HS-SCCH channel modulation mode information field of 1 bit and the other ordering of terminal identification information to represent that the modulation system of HS-PDSCH channel is third and fourth kind modulation system.
3. method as claimed in claim 2 is characterized in that:
Among the step B, terminal during as the former ordering of terminal identification information, determines that the HS-SCCH channel modulation mode information field of described 1 bit is first and second kind modulation system at the sortord of the described identification information that uses when the match is successful; During as the other ordering of terminal identification information, determine that the HS-SCCH channel modulation mode information field of described 1 bit is third and fourth kind modulation system at the sortord of the described identification information that uses when the match is successful.
4. the method for claim 1 is characterized in that:
Also comprise before the steps A: terminal reports this terminal whether to support HS-PDSCH channel modulation mode more than two kinds to network terminal;
In the steps A, network terminal is when determining that terminal is not supported more than two kinds HS-PDSCH channel modulation mode, directly select the CRC tail bit information of terminal identification information and HS-SCCH control information generation to carry out XOR, use the HS-SCCH channel modulation mode information field of 1 bit to represent the modulation system of HS-PDSCH channel.
5. method as claimed in claim 4 is characterized in that:
Among the step B, terminal is when determining that this terminal is not supported more than two kinds HS-PDSCH channel modulation mode, directly use identification information of this terminal and the information behind the HS-SCCH channel-decoding to mate, and when the match is successful, determine the modulation system of HS-PDSCH channel according to the HS-SCCH channel modulation mode information field of 1 bit.
6. the method for claim 1 is characterized in that:
Also comprise before the steps A: the make an appointment other sortord of terminal identification information of network terminal and terminal.
7. method as claimed in claim 6 is characterized in that:
The other ordering of described terminal identification information is the backward of terminal identification information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100567670A CN101232353B (en) | 2008-01-24 | 2008-01-24 | Method for indicating HS-PDSCH channel modulation mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100567670A CN101232353B (en) | 2008-01-24 | 2008-01-24 | Method for indicating HS-PDSCH channel modulation mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101232353A true CN101232353A (en) | 2008-07-30 |
| CN101232353B CN101232353B (en) | 2010-08-11 |
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| GB2404539B (en) * | 2003-07-31 | 2006-06-14 | Fujitsu Ltd | Adaptive modulation and coding |
| CN100449979C (en) * | 2005-07-01 | 2009-01-07 | 上海原动力通信科技有限公司 | Method for supporting multi-stage modulation by controlling high-speed down-converter grouped access system |
| CN101064945A (en) * | 2006-04-28 | 2007-10-31 | 华为技术有限公司 | Scheduling status indication method of communication system and base station and user equipment |
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