CN101483879B - Method, apparatus and system for obtaining quality evaluation result of code channel resource channel quality assessment result - Google Patents
Method, apparatus and system for obtaining quality evaluation result of code channel resource channel quality assessment result Download PDFInfo
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Abstract
The invention discloses a method for obtaining the channel quality evaluation result of code track resources, and the method comprises that: a user terminal receives notification message which is sent by a base station and is used for directing the distribution result of system resources, and according to the notification message the code track resources obtained by the user terminal are determined; and the original information quality evaluation result of all code tracks contained in the code track resources is determined, with a preset channel evaluation window as a unit, the average channel quality evaluation result of each channel evaluation window is obtained according to the original information quality evaluation result, and then the channel quality evaluation result of each code track contained in the code track resources is obtained according to the average channel quality evaluation result. In such a way, the user terminal can accurately analyze business data carried by signals sent from the base station according to the channel quality evaluation result of each code track, and the service performance of the system is guaranteed, furthermore, user experience is improved to a certain degree. Meanwhile, the invention also discloses a communication device and a communication system.
Description
Technical field
The present invention relates to the communications field, particularly obtain method, the Apparatus and system of quality evaluation result of code channel resource channel quality assessment result.
Background technology
At present, according to 3-G (Generation Three mobile communication system) collaborative project (3rd Generation Partnership Project, 3GPP) standard code, insert in (TD-SCDMA) system in TD SDMA, the user uses high-speed downlink packet to insert (High-SpeedDownlink Packet Access, when HSDPA) professional, base station (NodeB) is by shared control channel (Shared Control Channel for HS-DSCH, HS-SCCH) to UE (User Equipment, subscriber equipment) transmit the notification message that is used to indicate its resource distribution result, this resource distribution result comprises code channel resource and time interval resource.
But, in the prior art, do not have suitable method and resolve above-mentioned notification message, thereby make UE obtain the channel quality assessment result of NodeB for each bar code channel in the code channel resource of its distribution.So, when UE carries out united detection processing when (comprising operations such as aggregate channel RESPONSE CALCULATION, matched filtering, correlation matrix generation, intermediate code Interference Cancellation, Cholesky decomposition, demodulation), just can't accurately parse entrained business datum in the signal that NodeB sends, thereby influenced the service performance of whole system, and then reduced user experience.
Summary of the invention
The invention provides a kind of method, Apparatus and system that obtains the code channel resource quality assessment result, in order in the TD-SCDMA system, order uses the user terminal of HSDPA business accurately to grasp the channel quality assessment result that this user terminal is assigned to each code channel in the code channel resource at all.
The concrete technical scheme that the embodiment of the invention provides is as follows:
A kind of method that obtains quality evaluation result of code channel resource channel quality assessment result comprises:
User terminal receives the notification message that is used to indicate the system resource allocation result that the base station sends, and determines the code channel resource that this user terminal obtains according to described notification message;
Described user terminal is determined the original channel quality assessment result of all code channels that described code channel resource comprises, and be unit with default channel estimation window, obtain the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result;
Described user terminal is adjusted described average channel quality assessment result according to the number of code channel in each channel estimation window, to obtain the channel quality assessment result of every code channel in the described code channel resource.
A kind of communicator comprises
Communication unit is used to receive the notification message that is used to indicate the system resource allocation result that the base station sends;
Determining unit is used for determining the code channel resource that this user terminal obtains according to described notification message;
First processing unit is used to obtain the original channel quality assessment result of all code channels that described code channel resource comprises;
Second processing unit, being used for default channel estimation window is unit, obtains the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result;
The 3rd processing unit is used for according to the number of code channel in each channel estimation window described average channel quality assessment result being adjusted, to obtain the channel quality assessment result of every code channel in the described code channel resource.
A kind of communication system comprises:
The base station is used for the notification message that is used to indicate the system resource allocation result that sends to user terminal;
User terminal, be used to receive described notification message, and determine the code channel resource that this user terminal obtains according to this notification message, and the original channel quality assessment result of determining all code channels that described code channel resource comprises, and be unit with default channel estimation window, obtain the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result, obtain the channel quality assessment result of every code channel in the described code channel resource according to described average channel quality assessment result.
In the embodiment of the invention, user terminal receives that the base station sends be used to indicate system resource allocation result's notification message after, determine the original channel quality assessment result of code channel resource and all code channels that this code channel resource comprises of the acquisition of this user terminal according to described notification message, and be unit with default channel estimation window, obtain the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result; And the channel quality assessment result who obtains every code channel in the described code channel resource according to described average channel quality assessment result.Like this, the channel quality assessment result of every code channel that user terminal just can obtain according to this user terminal accurately parses entrained business datum in the signal that the base station sends, thereby guaranteed the service performance of system, and then promoted user experience to a certain extent.
Description of drawings
Fig. 1 is a TD-SCDMA Solution Architecture schematic diagram in the embodiment of the invention;
Fig. 2 is a UE illustrative view of functional configuration in the embodiment of the invention;
The channel quality assessment that Fig. 3 obtains each code channel in the code channel resource that this UE is assigned to for UE in the embodiment of the invention is flow chart as a result.
Embodiment
In the TD-SCDMA system, in order to make the channel quality assessment result of every code channel in the code channel resource that user terminal (UE) can obtain to be assigned to, in the embodiment of the invention, UE receives the notification message that is used to indicate the system resource allocation result that the base station sends, and determines the code channel resource that this UE obtains according to described notification message; And the original channel quality assessment result of determining all code channels that described code channel resource comprises, and be unit with default channel estimation window, obtain the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result; Obtain the channel quality assessment result of every code channel in the described code channel resource again according to described average channel quality assessment result.
(High Speed Downlink PackageAccess, HSDPA) business is an example, and is elaborated in conjunction with the accompanying drawings to use the high-speed downlink packet access with UE below.
Consult shown in Figure 1ly, the TD-SCDMA system can comprise a plurality of base stations 10 and a plurality of user terminal 11, and the embodiment of the invention is that example describes with a base station 10 (hereinafter referred to as NodeB) and a user terminal 11 (hereinafter referred to as UE) only.
NodeB is used for the notification message that is used to indicate the system resource allocation result to the UE transmission;
UE is used to receive the notification message that NodeB sends, and determine the code channel resource that this UE obtains according to this notification message, and the original channel quality assessment result of determining all code channels that described code channel resource comprises, and be unit with default channel estimation window, obtain the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result, obtain the channel quality assessment result of every code channel in the described code channel resource according to described average channel quality assessment result.
Consult shown in Figure 2ly, in the present embodiment, UE comprises communication unit 110, determining unit 111, first processing unit 112, second processing unit 113 and the 3rd processing unit 114.
Determining unit 111 is used for determining the code channel resource that this UE obtains according to described notification message;
Second handles single 113 is used for to be unit, to obtain the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result with default channel estimation window;
The 3rd processing unit 114 is used for obtaining according to described average channel quality assessment result the quality assessment result of every code channel of described code channel resource.
Based on the said system framework, in the present embodiment, UE is when using HSDPA professional, NodeB is by shared control channel (Shared Control Channel for HS-DSCH, HS-SCCH) transmit the notification message of indicating its system resource allocation result to UE, this resource allocation result comprises code channel resource and time interval resource, consults shown in Figure 3ly, and UE obtains channel quality assessment result's the detailed process of each code channel of comprising in the code channel resource that this UE is assigned to according to above-mentioned notification message as follows:
Step 300:UE receives the message that is used to notify its system resource allocation result (hereinafter referred to as message A) that NodeB sends by the HS-SCCH channel.
Step 310:UE determines that according to message A NodeB is this UE distributed system resources, and this system resource comprises code channel resource and time interval resource.
In actual applications, NodeB is multiple for the method for the code channel resource of its distribution has to UE notice, and in the present embodiment, employed channel code label came to be the code channel resource of its distribution to the UE notice when NodeB carried out the spread spectrum operation by carry UE in message A.
In the present embodiment, the whole code channel resources in the communication system comprise 16 code channels, and its label is respectively 0,1,2......15.And the data length of the channel code that UE obtains from message A is generally 8bits, wherein, the label of initial code channel in the code channel resource that the data representation NodeB of preceding 4bits distributes, the label of termination code channel in the code channel resource of the data representation NodeB of 4bits distribution then; For example, the channel code that NodeB uses is shown " 00010111 " with binary form, as seen, NodeB is that the label of the initial code channel of UE distribution is " 1 ", and the label of the NodeB termination code channel that to be UE distribute is " 7 ", so, the code channel resource of UE acquisition promptly is 1 number road, 2 number roads ... 7 number roads.
On the other hand, in the present embodiment, the time interval resource that UE is obtained is called time slot A.
Step 320:UE obtains the original channel quality assessment result of the code channel resource that this UE takies, and this original channel quality assessment result comprises the channel quality assessment result of all code channels that comprise in each channel estimation window.
In the present embodiment, UE uses 1 pair of code channel resource that obtains in time slot A of formula to carry out quality evaluation:
Wherein, Raw represents original value, and DFT () and IDFT () are respectively discrete Fourier transform (DFT) and anti-discrete Fourier transform (DFT), e
mThe intermediate code (being the midamble sign indicating number) of the time slot data of effective configuration of extracting from the signal that receives according to the time interval resource information among the message A for UE, its data length is generally 128bits, m
pPreserve for UE is local by the default intermediate code of high level.Its data length also is 128bits usually.
Step 330:UE carries out the window adjustment to the original channel quality assessment result that obtains to be handled.
In actual applications, a plurality of UE under each sub-district can only distribute a basic midamble code, so the different intermediate codes that a plurality of UE under the same sub-district obtain produce by a basic midamble code is shifted, and a plurality of intermediate codes of a UE acquisition also produce by a basic midamble code is shifted.The channel quality assessment result that the intermediate code that UE obtains according to this UE calculates can think the channel quality assessment result of a channel estimation window.The channel quality assessment result that calculates according to a plurality of intermediate codes of UE just can think the channel quality assessment result of a plurality of channel estimation windows so.Simultaneously, because a plurality of intermediate codes that UE obtains produce by a basic midamble code is shifted, so, can determine just according to the difference of the original position of intermediate code which channel estimation window it belongs to.In the present embodiment, for the ease of subsequent treatment, UE need adjust each channel estimation window and the corresponding channel quality assessment result thereof that will comprise in the original channel quality assessment result by the window processing and resequence according to default order.
In the present embodiment, UE uses the original channel quality assessment result of 2 pairs of acquisitions of formula to carry out window and handles adjustment:
H "
j=h "
Raw, (j+p+112-(Km-1) W) modP, j=0,1 ..., P-1 formula 2
Wherein,
H " RawThe original channel quality assessment result that expression obtains by formula 1, P represents the data length of original channel quality assessment result, and generally, P=128, Km represent the number of the channel estimation window of systemic presupposition, and W is the length of each channel estimation window
J=0,1 ..., P-1, the some chips (CHIP) in the expression original channel quality assessment result.
Step 340:UE obtains the quality assessment result of the code channel that comprises in each channel estimation window according to the original channel quality assessment result of handling through the window adjustment, this result represents with formula 3:
Formula 3
Wherein, Km is the number of the channel estimation window of systemic presupposition, the length of each channel estimation window of W
Step 350:UE determines the number of the code channel that this UE obtains according to the label of the initial code channel that obtains and the label that stops code channel.
Step 360:UE averages processing to the channel quality assessment result of each channel estimation window of acquisition, obtains the average channel quality assessment result.
In actual applications, there is certain difference between the channel quality assessment result of each channel estimation window, for the influence of in united detection processing, avoiding producing, need come performance difference between each channel estimation window of balance by average treatment because of performance difference.In the present embodiment, UE uses formula 4 to carry out above-mentioned average treatment:
Wherein, K
RuBe the number of the code channel of UE acquisition, k
RuBe used to represent some code channels, f (k
Ru) be k
RuThe numbering of the channel estimation window of individual code channel correspondence,
Be f (k
Ru) code channel number that individual channel estimation window comprises, av represents mean value.
Step 370:UE adjusts accordingly the average channel quality assessment result that obtains according to the code channel number, obtains the channel quality assessment result of each code channel.
In the present embodiment, UE uses 5 pairs of average channel quality assessment results of formula to adjust:
Wherein, K
RuBe the number of the code channel of UE acquisition, k
RuBe used to represent some code channels, f (k
Ru) be k
RuThe numbering of the channel estimation window of individual code channel correspondence,
Be f (k
Ru) number of the code channel that comprises of individual window.
Like this, processing procedure through the foregoing description, UE has just confirmed the channel quality of each code channel in the code channel resource that this UE will obtain in time slot A, so, UE is when carrying out united detection processing, just can accurately parse NodeB entrained business datum in the signal that time slot A issues according to the channel quality assessment result of above-mentioned each code channel, thereby guarantee the service performance of system, and then promote user experience to a certain extent.Accordingly, consult shown in Figure 2ly, further comprise detecting unit 115 in the user terminal 11, this detecting unit 115 is used for carrying out united detection processing according to the channel quality assessment result of every the code channel that obtains.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1. a method that obtains quality evaluation result of code channel resource channel quality assessment result is characterized in that, comprising:
User terminal receives the notification message that is used to indicate the system resource allocation result that the base station sends, and determines the code channel resource that this user terminal obtains according to described notification message;
Described user terminal is determined the original channel quality assessment result of all code channels that described code channel resource comprises, and be unit with default channel estimation window, obtain the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result;
Described user terminal is adjusted described average channel quality assessment result according to the number of code channel in each channel estimation window, to obtain the channel quality assessment result of every code channel in the described code channel resource.
2. the method for claim 1 is characterized in that, determines that according to described notification message the code channel resource that this user terminal obtains comprises step:
Obtain the channel code label that carries in the described notification message;
Determine the label of initial code channel in the described code channel resource and the label of termination code channel according to described channel code label;
Determine that according to the label of described initial code channel and the label of termination code channel this user terminal obtains whole code channel resources.
3. the method for claim 1 is characterized in that, according to formula
Obtain the original channel quality assessment result of described code channel resource, wherein:
e
mThe intermediate code of the time data of effective configuration of from the signal that receives, extracting for UE, m
pPreserve for UE is local by the default intermediate code of high level.
4. method as claimed in claim 3 is characterized in that, is unit with default channel estimation window, and the average channel quality assessment result that obtains each channel estimation window according to described original channel quality assessment result comprises step:
With default channel estimation window is unit, described original channel quality assessment result is carried out the window adjustment handle:
Obtain the quality assessment result of the code channel that comprises in each channel estimation window according to the original channel quality assessment result of handling through the window adjustment;
Quality assessment result to the code channel that comprises in described each channel estimation window averages processing, obtains the average channel quality assessment result.
5. method as claimed in claim 4 is characterized in that, according to formula h "
j=h "
Raw, (j+p+112-(Km-1) W) modPJ=0,1 ..., P-l carries out the window adjustment to described original channel quality assessment result to be handled, wherein:
P is the data length of original channel quality assessment result, and Km is the number of the channel estimation window of systemic presupposition, and W is the length of each channel estimation window
J=0,1 ..., P-1, a chip in the expression original channel quality assessment result.
6. method as claimed in claim 5 is characterized in that, according to formula
Obtain the channel quality assessment result of the code channel that comprises in each channel estimation window, wherein:
Km is the number of the channel estimation window of systemic presupposition, and W is the length of each channel estimation window
7. method as claimed in claim 6 is characterized in that, according to formula
Channel quality assessment result to the code channel that comprises in each channel estimation window averages processing, wherein,
Wherein, K
RuBe the total number of the code channel that obtains, k
RuBe used to represent some code channels, f (k
Ru) be used to represent k
RuThe channel estimation window of individual code channel ownership,
Be f (k
Ru) the code channel number that comprises of individual channel estimation window.
8. method as claimed in claim 7 is characterized in that, according to formula
Described average channel quality assessment result is adjusted, obtained the channel quality assessment result of each code channel in the described code channel resource, wherein,
K
RuBe the number of the code channel that obtains, k
RuBe used to represent some code channels, f (k
Ru) be k
RuThe numbering of the channel estimation window of individual code channel correspondence,
Be f (k
Ru) number of the code channel that comprises of individual window.
9. as each described method of claim 1-8, it is characterized in that, carry out united detection processing according to the channel quality assessment result of each code channel.
10. a communicator is characterized in that, comprises
Communication unit is used to receive the notification message that is used to indicate the system resource allocation result that the base station sends;
Determining unit is used for determining the code channel resource that this user terminal obtains according to described notification message;
First processing unit is used to obtain the original channel quality assessment result of all code channels that described code channel resource comprises;
Second processing unit, being used for default channel estimation window is unit, obtains the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result;
The 3rd processing unit is used for according to the number of code channel in each channel estimation window described average channel quality assessment result being adjusted, to obtain the channel quality assessment result of every code channel in the described code channel resource.
11. communicator as claimed in claim 10 is characterized in that, also comprises:
Detecting unit is used for carrying out united detection processing according to the channel quality assessment result of every code channel of described code channel resource.
12. communicator as claimed in claim 11, it is characterized in that, described first processing unit is determined the label of initial code channel in the described code channel resource according to the channel code label that carries in the described notification message and is stopped the label of code channel, and determines that according to the label of described initial code channel and the label of termination code channel this user terminal obtains whole code channel resources.
13. communicator as claimed in claim 12, it is characterized in that, described second processing unit is a unit with default channel estimation window, described original channel quality assessment result is carried out the window adjustment to be handled, obtain the quality assessment result of the code channel that comprises in each channel estimation window again according to the original channel quality assessment result of handling through the window adjustment, and the quality assessment result of the code channel that comprises in described each channel estimation window averaged processing, obtain the average channel quality assessment result.
14. communicator as claimed in claim 13, it is characterized in that, described the 3rd processing unit is according to the code channel resource of default channel estimation window and the acquisition of this user terminal, and the number of the interior code channel of each channel estimation window, described average channel quality assessment result is adjusted, obtained the channel quality assessment result of every code channel in the described code channel resource.
15. a communication system is characterized in that, comprising:
The base station is used for sending the notification message that is used to indicate the system resource allocation result to user terminal;
User terminal, be used to receive described notification message, and determine the code channel resource that this user terminal obtains according to this notification message, and the original channel quality assessment result of determining all code channels that described code channel resource comprises, and be unit with default channel estimation window, obtain the average channel quality assessment result of each channel estimation window according to described original channel quality assessment result, obtain the channel quality assessment result of every code channel in the described code channel resource according to described average channel quality assessment result.
16. communication system as claimed in claim 15 is characterized in that, described user terminal carries out united detection processing according to the channel quality assessment result of every code channel in the code channel resource that obtains.
17. communication system as claimed in claim 16, it is characterized in that, described user terminal is determined the label of initial code channel in the described code channel resource according to the channel code label that carries in the described notification message and is stopped the label of code channel, and determines whole code channel resources that this user terminal obtains according to the label of described initial code channel and the label of termination code channel.
18. communication system as claimed in claim 17, it is characterized in that, described user terminal is a unit with default channel estimation window, described original channel quality assessment result is carried out the window adjustment to be handled, obtain the quality assessment result of the code channel that comprises in each channel estimation window again according to the original channel quality assessment result of handling through the window adjustment, and the quality assessment result of the code channel that comprises in described each channel estimation window averaged processing, obtain the average channel quality assessment result, according to the number of code channel in each channel estimation window described average channel quality assessment result is adjusted again, to obtain the channel quality assessment result of every code channel in the described code channel resource.
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| WO2007000079A1 (en) * | 2005-06-28 | 2007-01-04 | Zte Corporation | A method for configuring and demodulating multiple scrambled codes in cdma system |
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| CN1536903A (en) * | 2003-04-07 | 2004-10-13 | 华为技术有限公司 | Distribution method of up code division resource |
| WO2007000079A1 (en) * | 2005-06-28 | 2007-01-04 | Zte Corporation | A method for configuring and demodulating multiple scrambled codes in cdma system |
| CN1805320A (en) * | 2006-01-16 | 2006-07-19 | 中兴通讯股份有限公司 | Method for code channel allocation in TD-SCDMA access system |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210531 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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