CN101001127B - Equipment and method of correcting and coding for transmission information - Google Patents
Equipment and method of correcting and coding for transmission information Download PDFInfo
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- CN101001127B CN101001127B CN 200610006525 CN200610006525A CN101001127B CN 101001127 B CN101001127 B CN 101001127B CN 200610006525 CN200610006525 CN 200610006525 CN 200610006525 A CN200610006525 A CN 200610006525A CN 101001127 B CN101001127 B CN 101001127B
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Abstract
This invention relates to a method for carrying out CRC check and coding process to transmitted information by a base station including: a base station processes CRC check information to the information of each user device and cascades the information blocks got from processing the user devices to form one or multiple information blocks to be coded. When the base station collects information of the multiple user devices in an information block and codes, it adds CRC to the specific information of each device and when the device receives information, it checks CRC to the information block of specific user devices only but not needs to check CRC to the blocks containing multiple user device informarion, if any one in which is faulty, it will not influence the process to specific information blocks so as to increase the transfer of information.
Description
Technical field
The present invention relates to equipment and the method for transmission information being done verification and coding a kind of, the block of information that relates in particular a plurality of users is brought together coding, independent user equipment information is done respectively equipment and the method for verification.
Background technology
In information exchanging process, signal can be subject to various forms of interference in transmission course, thereby causes the mistake of transfer of data.The mistake that in the middle of transmission course, occurs in order to resist signal that the undesirable factor of various channels causes, a kind of technology is the error detection code technology, namely by at transmitting terminal the information bit coding being introduced redundant information, then when decoding, receiving terminal can judge whether block of information is transmitted correctly according to redundant information, cyclic redundancy check (CRC) (CRC) has obtained very wide application as a kind of error detection code technology; Another kind of technology is to adopt the technology of error correcting code, namely by at transmitting terminal the information bit coding being introduced redundant information, then can automatically find and correct a part of error of transmission according to redundant information when receiving terminal is decoded.These two kinds of technology often adopt simultaneously, complement one another, and namely can correct a part of mistake by error correcting code when wrong when not many; When surpassing the error correcting capability of error correcting code too much, mistake judges the block of information mistake by error detection code.
In traditional communication system, when the base station need to send information to a plurality of subscriber equipmenies, can have two large classes to send the method for information:
1) base station sends respectively the information of each subscriber equipment at separate resource coding, subscriber equipment then each independently resource receive the information that sends;
2) base station focuses on block of information interpolation CRC, then a coding to the information that sends to a plurality of subscriber equipmenies.After subscriber equipment then needs correctly to receive this block of information that comprises a plurality of user equipment informations, therefrom extract the information that sends to it.
For second method, when the base station focused on an information block encoding to the information that sends to a plurality of subscriber equipmenies, Fig. 1 was the flow chart that process the base station.As shown in the figure, the base station at first forms a block of information (101) to the block of information cascade of a plurality of subscriber equipmenies; Then CRC is calculated for the block of information of this cascade composition in the base station, and the CRC that calculates is added to the back formation transmission block of information (102) of the block of information of cascade composition; The base station is to the block of information of having added CRC encode (103).Fig. 2 is the flow chart that subscriber equipment is processed.As shown in the figure, subscriber equipment at first receives the signal from the base station, and obtains comprising the block of information (201) of a plurality of user equipment informations in the resource decoding of correspondence; Next, subscriber equipment carries out crc check (202) to the decoded block of information that comprises a plurality of user equipment informations; If whole Packet Generation mistake is thought in CRC check failure, subscriber equipment, subscriber equipment abandons this packet (203); If CRC check is passed through, subscriber equipment is thought this block of information that comprises a plurality of user equipment informations is received correct (204); Subscriber equipment checks the subscriber equipment ID that whether comprises oneself in comprising the block of information of a plurality of user equipment informations, thereby determines whether the base station is that it has sent information (205).
In the HSDPA system, send with different code words for the descending shared control signal channel of different user devices, the descending shared control information that is to say different user devices sends with resource independently, has namely used above-mentioned first method.
In the systems such as IEEE802.16, Downlink Control Information concentrates in the control information territory of a frame front portion and sends, and concentrates in together for the control information of each subscriber equipment and adds CRC, has namely used above-mentioned second method.
In the prior art, it is smaller that first method above-mentioned is compared the coding gain of second method.Simultaneously, there is following problem in second method above-mentioned:
1) because the base station sends the block of information for a plurality of users in the one and same coding piece, bit number in the encoding block is a lot, transmit through wireless channel, after the user equipment side decoding, the possibility of CRC check failure will increase, in case and CRC check is failed, subscriber equipment can only think that whole block of information sends mistake.For the subscriber equipment that is in the poor position of channel condition, the reliability that control signal receives reduces.
2) when number of users is fewer, the ratio that the bit number that adds last CRC to accounts in total bit number increases, and overhead bit is larger;
Summary of the invention
The present invention is directed to the problem that existing method exists, propose a kind of equipment and method of transmission information being done verification and coding.
According to an aspect of of the present present invention, the method for CRC check and coding processing is done in a kind of base station to the information of transmission, comprise the steps:
A) base station is respectively for the information processing CRC check information of each subscriber equipment;
B) base station cascades up processing the transmission block of information that obtains for each subscriber equipment;
C) encode to the block of information that cascade obtains in the base station.
According to another aspect of the present invention, the method that a kind of subscriber equipment is processed information decoding and the CRC check of transmission comprises the steps:
A) subscriber equipment receives the signal of base station, and obtains comprising the block of information that sends to a plurality of user equipment informations in the resource decoding of correspondence;
B) subscriber equipment successively verification this comprise each block of information for special user equipment in the block of information of a plurality of user equipment informations, with oneself subscriber equipment ID verification it whether send to oneself.
According to another aspect of the present invention, the equipment that CRC check is processed and encoded is done to the information of transmission in a kind of base station, comprises
The module of the CRC of calculating and process user information is used for calculating the CRC of user profile, and passes through to process the reduction bit number;
Cascade module is directly inputted to coding module for the user profile that has increased check information is cascaded up.
According to another aspect of the present invention, the equipment that a kind of subscriber equipment is processed information decoding and the CRC check of transmission comprises
Segmentation module is used for the block of information that comprises a plurality of user equipment informations that subscriber equipment obtains decoding and splits into one by one block of information for special user equipment;
Correction verification module is used for each block of information for special user equipment that subscriber equipment receives according to oneself information checkings such as subscriber equipment ID;
Detect and processing module, be used for subscriber equipment and judge whether the base station is its transmission information, and do corresponding processing.
Adopt method of the present invention, the base station is added respectively CRC concentrating on for the information of a plurality of subscriber equipmenies when encoding in the block of information to the specific information of each subscriber equipment; Subscriber equipment does not need the block of information that comprises a plurality of user equipment informations is carried out CRC check when receiving, but carry out respectively CRC check according to the block of information for special user equipment, comprise in the block of information of a plurality of user equipment informations certain block of information for special user equipment and make a mistake and to affect subscriber equipment to other processing for the block of information of special user equipment, thereby the reliability that information is transmitted improves.
Description of drawings
Fig. 1 is the flow chart that process the base station in the existing method;
Fig. 2 is the flow chart that subscriber equipment is processed in the existing method;
Fig. 3 is CRC and combined coding are added respectively in the base station to user equipment information equipment drawing;
To be subscriber equipment detect and the equipment drawing of process information from the block of information that comprises a plurality of user equipment informations Fig. 4;
Fig. 5 is CRC and combined coding are added respectively in the base station to user equipment information flowchart illustration;
To be subscriber equipment detect and the flowchart illustration of process information from the block of information that comprises a plurality of user equipment informations Fig. 6;
Fig. 7 is an example of base station transmitter hardware block diagram;
Fig. 8 is an example of subscriber equipment receiver hardware block diagram;
When Fig. 9 was subscriber equipment ID and CRC equal in length, the method for user-specific information was processed in the base station;
Figure 10 is that the method to subscriber equipment ID reprocessing user-specific information is passed through in the base station;
Figure 11 is that the method to subscriber equipment ID coding and punching processing user-specific information is passed through in the base station.
Embodiment
The present invention proposes a kind of method of transmission information being done verification and coding.Its concrete operations are as follows:
The operation of base station
1) base station generates respectively for the information of each subscriber equipment respectively and adds CRC check information;
2) base station forms one or more block of information cascading up for the transmission block of information that obtains after each user device transmissions information processing;
3) encode to the block of information that cascade obtains in the base station.
The present invention is in above-mentioned steps 1) in generate and the CRC check information of adding can with other user equipment specific information (such as: subscriber equipment ID) make the bit number that certain processes to reduce transmission information.
The present invention is in above-mentioned steps 2) and 3) in, a kind of method is that the base station is cascaded into a block of information and coding to the transmission block of information of having added the subscriber equipment of CRC information.
The present invention is in above-mentioned steps 2) and 3) in, another kind method is that the base station is divided into a plurality of groups to subscriber equipment according to factors such as user device channel conditions, thereby respectively for every group of subscriber equipment, the base station is cascaded into a block of information and coding to the transmission block of information of having added the subscriber equipment of CRC information.
The operation of subscriber equipment
1) subscriber equipment receives the signal of base station, and obtains the block of information that one or more comprises a plurality of user equipment informations in the resource decoding of correspondence;
2) subscriber equipment successively verification comprise each block of information for special user equipment in the block of information of a plurality of user equipment informations, whether it sends to oneself with own subscriber equipment ID judgement.
The present invention is in above-mentioned steps 2) in, subscriber equipment judges that the base station is if subscriber equipment passes through for the verification of the block of information of special user equipment certain for its a kind of mode that has sent information, subscriber equipment thinks that this block of information sends to oneself, and stops other verification operation for the block of information of special user equipment;
The present invention is in above-mentioned steps 2) in, subscriber equipment judges that the base station is all block of informations for special user equipment of subscriber equipment verification for its another kind of mode that has sent information:
1) if the unique block of information verification of discovery of subscriber equipment is passed through, subscriber equipment thinks that this block of information sends to oneself;
2) if subscriber equipment is found a plurality of block of information verifications to be passed through, a kind of processing mode is that subscriber equipment is thought the information errors that the base station sends; Another kind of processing mode is whether the subscriber equipment block of information that further these verifications are passed through according to other condition analysiss sends to oneself, when the information that for example sends when the base station is control signal, transport block format in the subscriber equipment inspection message piece and the information such as resource of distribution, when these information all were consistent with its disposal ability, subscriber equipment thought that this block of information is to send to oneself.
The present invention is in above-mentioned steps 2) in, subscriber equipment judge the base station not have method for its transmission information to be if subscriber equipment after testing comprise all block of informations for special user equipment in the block of information of a plurality of user equipment informations, but do not detect the block of information that CRC check is passed through, subscriber equipment thinks that the base station is not its transmission information.
Fig. 3 is the equipment drawing that CRC and combined coding are added respectively in the base station among the present invention to user equipment information.As shown in the figure, CRC information is calculated for user profile (301,302) respectively in the base station; And user profile with calculate CRC and do suitable processing (303,304); Then the base station cascades up the user profile after processing and forms a block of information, and when the base station was divided into a plurality of groups to subscriber equipment, the base station correspondingly cascaded up the user profile after processing and forms a plurality of block of informations (305); Then base station block of information that cascade is formed encode (306).
Fig. 4 is that subscriber equipment detects and the equipment drawing of process information from the block of information that comprises a plurality of user equipment informations among the present invention.As shown in the figure, subscriber equipment at first obtains comprising the block of information of a plurality of user equipment informations to the base station signal decoding of receiving, when the base station was divided into a plurality of group codings transmission to subscriber equipment, the subscriber equipment decoding obtained a plurality of block of informations (400) that comprise a plurality of user equipment informations; Then subscriber equipment splits into one by one block of information (401) for special user equipment to the block of information that comprises a plurality of user equipment informations; Then subscriber equipment is processed respectively each block of information for special user equipment (402,404), each block of information for special user equipment (403,405) that receives according to oneself information checkings such as subscriber equipment ID; End user's equipment judges whether the base station is that it has sent information (406).
Embodiment
Embodiments of the invention are described below.CRC is calculated to the control bit outside the subscriber equipment ID of each subscriber equipment respectively in the hypothesis base station in this is implemented, and then its subscriber equipment ID and the CRC that calculates is done the mask operation.Because the present invention does not specify the concrete production method of specific CRC, the present invention is applicable equally to other methods of processing CRC check.
Fig. 5 is the example of the flow chart of base station processing controls signaling.An at first base station selected subscriber equipment that needs scheduling resource calculates CRC (501) to the control information of all these subscriber equipmenies except subscriber equipment ID; Then the CRC that step (501) calculated with the subscriber equipment ID of this subscriber equipment of base station does mask operation (503); The base station cascades up the control information except subscriber equipment ID and the middle CRC with subscriber equipment ID mask of step (502) to this subscriber equipment, and the composition base station is this subscriber equipment piece (503) that sends control information; Then the base station need to judge whether to process respectively all and need the control information (504) of subscriber equipment to be processed: if all subscriber equipmenies are not also processed in the base station, be circulated to step (501) and continue to process next subscriber equipment; If cascading up the control information piece that obtains for each subscriber devices compute, the base station is treated all subscriber equipmenies, base station form a control information piece (505); Next, base station control information piece that this cascade is obtained encode (506).
Fig. 6 is the example that subscriber equipment receives the flow chart of descending control signaling.At first subscriber equipment receives the signal of base station, and obtains comprising the control information piece (601) that sends to a plurality of subscriber equipment control informations in the resource decoding corresponding to down control channel; Next, subscriber equipment calculates CRC (602) for a control information piece that sends to special user equipment in comprising the control information piece of a plurality of subscriber equipment control informations; Then subscriber equipment judge receive for the CRC that calculates in the CRC territory behind the subscriber equipment ID mask in the control information piece of special user equipment, the step (602) and the subscriber equipment ID of oneself whether conform to (603); If the judged result of step (603) is to conform to, subscriber equipment thinks and receives that the base station issues its descending control signaling, and subscriber equipment thinks that the base station is that it has dispatched resource, and according to the control signal receive data (606) of receiving; If the judged result of step (603) is not conform to, subscriber equipment judges whether it has all carried out CRC check (604) to all the control information pieces for special user equipment in the control information piece that comprises a plurality of subscriber equipment control informations; If subscriber equipment does not also detect all control information pieces, forward step (602) to and continue to process next control information piece for special user equipment; If subscriber equipment after testing all control information pieces, and subscriber equipment do not detect the descending control signaling of issuing oneself, subscriber equipment thinks that the base station is not its transmission information (605).Receive the moment of descending control signaling at the next one, subscriber equipment repeats said process.
Fig. 9 is when subscriber equipment ID and CRC equal in length, and the method for user-specific information is processed in the base station.As shown in the figure, at first CRC (902) is calculated for user profile (comprising or do not comprise subscriber equipment ID) (901) in the base station, then the base station is done the mask operation to subscriber equipment ID (903) and the CRC that calculates, generally be mould 2 add operations, xor operation (904) namely, the as a result cascade that last base station operates the user profile except subscriber equipment ID and above-mentioned mask forms this user's transmission block of information (905).
Figure 10 is that the base station is by a kind of method to subscriber equipment ID reprocessing user-specific information when subscriber equipment ID length during less than CRC length.As shown in the figure, CRC (1002) is calculated for user profile (comprising or do not comprise subscriber equipment ID) (1001) on the one hand in the base station, the base station is carried out repetition to subscriber equipment ID (1003) on the other hand, when CRC length is not the integral multiple of subscriber equipment ID length, can select some bit multiple multiple once (1004) of subscriber equipment ID, then the base station is done the mask operation to the subscriber equipment ID after repeating and the CRC that calculates, generally be mould 2 add operations, xor operation (1005) namely, the as a result cascade that last base station operates the user profile except subscriber equipment ID and above-mentioned mask forms this user's transmission block of information (1006).
Figure 11 is when subscriber equipment ID length during less than CRC length, and the base station is by processing the another kind of method of user-specific information to subscriber equipment ID coding and punching.As shown in the figure, CRC (1102) is calculated for user profile (comprising or do not comprise subscriber equipment ID) (1101) on the one hand in the base station, the base station is on the other hand subscriber equipment ID (1103) encode (1104), then punching or repeated matching are to CRC length (1105), then the base station is done the mask operation to the subscriber equipment ID after processing and the CRC that calculates, generally be mould 2 add operations, xor operation (1106) namely, the as a result cascade that last base station operates the user profile except subscriber equipment ID and above-mentioned mask forms this user's transmission block of information (1107).
Fig. 7 has provided an example of base station transmitter hardware block diagram when adopting the inventive method.As shown in the figure, base station control unit (700) control is a plurality of users' information (701,702) after having added check information, focus on a block of information (703), then chnnel coding, rate-matched are carried out and interweave (704) to this block of information that comprises a plurality of user profile in the base station, next it is modulated (705), add Cyclic Prefix (706), steering D/A conversion (707) is at last by radio frequency sending set (708) and antenna (709) emission.
Fig. 8 has provided an example of subscriber equipment receiver hardware block diagram when adopting the inventive method.Subscriber equipment is by the signal of antenna (800) and radio-frequency transmitter (801) reception from the base station, through mould/transformation of variables (802), remove Cyclic Prefix (803), demodulation (804), data deinterlacing, rate de-matching and the decoding (805) that subscriber equipment sends the base station obtains comprising the block of information of a plurality of user equipment informations, and whether end user equipment Inspection base station is that it has sent information and has done suitable processing (806).
Claims (18)
1. the method that the base station is done CRC check and encoded and process the information of transmission comprises the steps:
CRC is calculated according to the user equipment specific information except subscriber equipment ID in the base station;
Subscriber equipment ID and the CRC that calculates are done the mask operation;
The transmission block of information that CRC behind the mask and user equipment specific information cascade except subscriber equipment ID is formed this subscriber equipment;
The base station cascades up processing the transmission block of information that obtains for each subscriber equipment; And
Encode to the block of information that cascade obtains in the base station.
2. method according to claim 1 is characterized in that the mask operation is mould 2 add operations.
3. method according to claim 1 is characterized in that the base station is by repeating to make the equal in length of its length and CRC to subscriber equipment ID when subscriber equipment ID length during less than the length of CRC.
4. method according to claim 1 is characterized in that when subscriber equipment ID length during less than the length of CRC, and the base station is by making the equal in length of its length and CRC to subscriber equipment ID coding and punching.
5. method according to claim 1 is characterized in that the base station is cascaded into a block of information to the transmission block of information of having added the subscriber equipment of CRC information in the step that the transmission block of information that the base station handle obtains for each subscriber equipment processing cascades up.
6. method according to claim 1, in the step that it is characterized in that in the base station transmission block of information that obtains for each subscriber equipment processing being cascaded up, the base station is divided into a plurality of groups to subscriber equipment according to the user device channel condition, thereby respectively for every group of subscriber equipment, the base station is cascaded into a block of information to the transmission block of information of having added the subscriber equipment of CRC information.
7. method according to claim 1 is characterized in that in the step that the block of information that the base station obtains cascade is encoded, and CRC check information is not added for the block of information that this cascade forms in the base station.
8. the method that subscriber equipment is processed information decoding and the CRC check of transmission comprises the steps:
A) subscriber equipment receives the block of information from the base station, and obtains comprising the block of information that sends to a plurality of user equipment informations in the resource decoding of correspondence;
B) subscriber equipment successively verification this comprise each block of information for special user equipment in the block of information of a plurality of user equipment informations, with oneself subscriber equipment ID verification it whether send to oneself;
Wherein, the base station obtains sending to the block of information of subscriber equipment by carrying out following processing;
Calculate CRC according to the user equipment specific information except subscriber equipment ID;
Subscriber equipment ID and the CRC that calculates are done the mask operation;
The transmission block of information that CRC behind the mask and user equipment specific information cascade except subscriber equipment ID is formed this subscriber equipment.
9. method according to claim 8 is characterized in that at step b) in, subscriber equipment does not carry out whole CRC check to the block of information that this comprises a plurality of user equipment informations.
10. method according to claim 8 is characterized in that at step b) in, subscriber equipment judges that the base station is that subscriber equipment thinks that the block of information for special user equipment that first verification is passed through sends to oneself for its method that has sent information.
11. method according to claim 8 is characterized in that at step b) in, subscriber equipment judges that the base station is to make a decision after all block of informations for special user equipment of subscriber equipment verification for its method that has sent information.
12. method according to claim 11 is characterized in that subscriber equipment thinks that this block of information sends to oneself if the unique block of information verification of discovery of subscriber equipment is passed through.
13. method according to claim 11 is characterized in that if subscriber equipment is found a plurality of block of information verifications to be passed through, subscriber equipment is thought the information errors that the base station sends.
14. method according to claim 11 is characterized in that if subscriber equipment is found a plurality of block of information verifications to be passed through, whether the subscriber equipment block of information that further these verifications are passed through according to other condition analysiss sends to oneself.
15. method according to claim 14, it is characterized in that when the information of base station transmission is control signal, transport block format in the subscriber equipment inspection message piece and the resource of distribution, when the resource of transport block format and distribution was consistent with its disposal ability, subscriber equipment thought that this block of information sends to oneself.
16. method according to claim 8, it is characterized in that at step b) in, if subscriber equipment after testing all block of informations for special user equipment, but do not detect the block of information that CRC check is passed through, subscriber equipment thinks that the base station is not to its transmission information.
17. the information to transmission is done, and CRC check is processed and the base station of coding, comprising:
The module of the CRC of calculating and process user information, for the CRC that calculates user profile, and by processing to reduce the bit number of transmission information;
Cascade module is directly inputted to coding module for the user profile that has increased check information is cascaded up;
Wherein, the module of the CRC of described calculating and process user information is calculated CRC according to the user equipment specific information except subscriber equipment ID, and subscriber equipment ID and the CRC that calculates are done the mask operation;
The CRC of described cascade module after with mask and the user equipment specific information cascade except subscriber equipment ID form the transmission block of information of this subscriber equipment.
18. the subscriber equipment that information decoding and the CRC check of transmission are processed comprises:
Segmentation module is used for the block of information that comprises a plurality of user equipment informations that decoding obtains is split into one by one block of information for special user equipment;
Correction verification module is used for each block of information for special user equipment that the subscriber equipment ID verification according to subscriber equipment oneself receives;
Detect and processing module, be used for judging whether the base station is its transmission information, and do corresponding processing;
Wherein, the base station obtains sending to the block of information of subscriber equipment by following processing:
CRC is calculated according to the user equipment specific information except subscriber equipment ID in the base station;
Then subscriber equipment ID and the CRC that calculates are done the mask operation;
CRC behind the mask and the user equipment specific information cascade except subscriber equipment ID form the transmission block of information of this subscriber equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610006525 CN101001127B (en) | 2006-01-10 | 2006-01-10 | Equipment and method of correcting and coding for transmission information |
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| CN 200610006525 CN101001127B (en) | 2006-01-10 | 2006-01-10 | Equipment and method of correcting and coding for transmission information |
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| CN101001127A CN101001127A (en) | 2007-07-18 |
| CN101001127B true CN101001127B (en) | 2013-04-10 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104883745B (en) | 2007-01-09 | 2019-06-14 | 华为技术有限公司 | Base station apparatus, mobile station apparatus, control method for sending information, control message receiving method and program |
| CN102379108B (en) * | 2009-04-01 | 2015-06-03 | 皇家飞利浦电子股份有限公司 | Frame concatenation in wireless UWB devices |
| CN102612173B (en) * | 2011-01-21 | 2016-08-10 | 芯讯通无线科技（上海）有限公司 | The means of communication between multi mode terminal and communication module thereof |
| CN102325003B (en) * | 2011-07-14 | 2014-02-12 | 海能达通信股份有限公司 | Method for data error detection and device |
| CN105005733B (en) * | 2015-06-11 | 2022-04-08 | 天地融科技股份有限公司 | Word stock initialization method, character display method and system and intelligent key equipment |
| GB2542770B (en) | 2015-09-25 | 2020-01-08 | Samsung Electronics Co Ltd | Mobile device capability identifier |
| CN106533958B (en) * | 2016-12-05 | 2019-12-31 | 国网浙江省电力公司杭州供电公司 | Data consistency checking method for heterogeneous system of cross-network isolation device |
| CN108230943A (en) * | 2016-12-21 | 2018-06-29 | 重庆博之翰科技有限公司 | Draw ring information jettison system |
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| CN2574321Y (en) * | 2001-05-14 | 2003-09-17 | 交互数字技术公司 | Base station and user apparatus |
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| CN1247419A (en) * | 1998-07-28 | 2000-03-15 | 朗迅科技公司 | Communication system |
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