CN101001127A - 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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- CN101001127A CN101001127A CN 200610006525 CN200610006525A CN101001127A CN 101001127 A CN101001127 A CN 101001127A CN 200610006525 CN200610006525 CN 200610006525 CN 200610006525 A CN200610006525 A CN 200610006525A CN 101001127 A CN101001127 A CN 101001127A
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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 a kind of transmission information be done the equipment and the method for verification and coding, the block of information that relates in particular a plurality of users is brought together coding, independent user equipment information is done the equipment and the method for verification respectively.
Background technology
In information exchanging process, signal can be subjected to various forms of interference in transmission course, thereby causes the mistake of transfer of data.In order to resist the mistake that signal that the undesirable factor of various channels causes takes place in the middle of transmission course, a kind of technology is the error detection code technology, promptly by the information bit coding being introduced redundant information at transmitting terminal, when decoding, receiving terminal can judge whether block of information is transmitted correctly then according to redundant information, Cyclic Redundancy Check 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, promptly by at transmitting terminal the information bit coding being introduced redundant information, can find and correct a part of error of transmission automatically according to redundant information then when receiving terminal is decoded.These two kinds of technology often adopt simultaneously, complement one another, and promptly 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 send information to a plurality of subscriber equipmenies, can have two big classes to send the method for information:
1) encode on separate resource respectively and send the information of each subscriber equipment in the base station, and subscriber equipment then independently receives the information that sends on the resource at each;
2) base station focuses on block of information interpolation CRC, a coding then 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 handle the base station.As shown in the figure, the base station is at first formed a block of information (101) to the block of information cascade of a plurality of subscriber equipmenies; CRC is calculated for the block of information of this cascade composition in the base station then, 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 handled.As shown in the figure, subscriber equipment at first receives from signal of base station, and decoding obtains comprising the block of information (201) of a plurality of user equipment informations on the resource 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 CRC check failure, subscriber equipment think that whole packet sends mistake, 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 is checked 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 at 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 promptly used above-mentioned first method.
In 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 at the control information of each subscriber equipment and adds CRC, has promptly 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 at 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 failure, 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 the control signaling receives reduces greatly.
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 bigger;
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 encoding process is done to information transmitted in a kind of base station, comprises the steps:
A) base station is respectively at the information processing CRC check information of each subscriber equipment;
B) base station cascades up handling the transmission block of information that obtains at 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, a kind of subscriber equipment comprises the steps: the method for information transmitted decoding and CRC check processing
A) subscriber equipment receives signal of base station, and decoding obtains comprising the block of information that sends to a plurality of user equipment informations on the resource of correspondence;
B) subscriber equipment successively verification this comprise each block of information in the block of information of a plurality of user equipment informations at special user equipment, 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 handled and encoded is done to information transmitted in a kind of base station, comprises
The module of the CRC of calculating and process user information is used to calculate the CRC of user profile, and passes through to handle the reduction bit number;
Cascade module, being used for the user profile that has increased check information cascaded up is directly inputted to coding module.
According to another aspect of the present invention, a kind of subscriber equipment comprises the equipment of information transmitted decoding and CRC check processing
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 at special user equipment;
The verification module is used for each block of information at 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 CRC concentrating at the information of a plurality of subscriber equipmenies when encoding in the block of information respectively to each subscriber equipment information specific; 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 CRC check respectively according to block of information at special user equipment, comprise in the block of information of a plurality of user equipment informations certain block of information and make a mistake and to influence subscriber equipment, thereby the reliability of information transmission improves greatly other processing at the block of information of special user equipment at special user equipment.
Description of drawings
Fig. 1 is the flow chart that handle the base station in the existing method;
Fig. 2 is the flow chart that subscriber equipment is handled in the existing method;
Fig. 3 is the base station is added CRC and combined coding respectively to user equipment information a 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 the base station is added CRC and combined coding respectively to user equipment information a 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 handled 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 transmission information to be done verification and Methods for Coding.Its concrete operations are as follows:
The operation of base station
1) base station generates respectively at the information of each subscriber equipment respectively and adds CRC check information;
2) one or more block of information is formed cascading up at the transmission block of information that obtains after each user device transmissions information processing in the base station;
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) do certain and handle the bit number that reduces 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 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 at every group of subscriber equipment, the base station is cascaded into 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 signal of base station, and decoding obtains the block of information that one or more comprises a plurality of user equipment informations on the resource of correspondence;
2) subscriber equipment successively verification comprise each block of information in the block of information of a plurality of user equipment informations at special user equipment, judge with oneself subscriber equipment ID whether it sends to oneself.
The present invention is in above-mentioned steps 2) in, subscriber equipment judges that the base station is if subscriber equipment passes through at 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 at 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 at 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 for example the information that sends when the base station is the control signaling, the 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 in the block of information of a plurality of user equipment informations at 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 its transmission information.
Fig. 3 is the equipment drawing that the base station is added CRC and combined coding respectively among the present invention to user equipment information.As shown in the figure, CRC information is calculated at user profile (301,302) respectively in the base station; And user profile with calculate CRC and do suitable processing (303,304); The base station cascades up the user profile after handling and forms a block of information then, 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 handling and forms a plurality of block of informations (305); Base station block of information that cascade is formed encode (306) then.
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 subscriber equipment a plurality of group codings and sends, the subscriber equipment decoding obtained a plurality of block of informations (400) that comprise a plurality of user equipment informations; Subscriber equipment splits into one by one block of information (401) at special user equipment to the block of information that comprises a plurality of user equipment informations then; Subscriber equipment is handled each block of information at special user equipment (402,404) respectively then, each block of information at 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 suitable equally to other methods of handling 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 that subscriber equipment ID; The CRC that step (501) calculated with the subscriber equipment ID of this subscriber equipment of base station does mask operation (503) then; The base station cascades up control information except that 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 judge whether to have handled respectively the control information (504) of all subscriber equipmenies that need handle; If all subscriber equipmenies are not also handled in the base station, be circulated to step (501) and continue to handle next subscriber equipment; If cascading up the control information piece that obtains at 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 signal of base station, and decoding obtains comprising the control information piece (601) that sends to a plurality of subscriber equipment control informations on corresponding to the resource of down control channel; Next, subscriber equipment calculates CRC (602) at 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 at 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 that subscriber equipment thinks that the base station is that it has dispatched resource, and receives data (606) according to the control signaling 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 at 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 handle next control information piece at 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).In the moment of next one reception descending control signaling, 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 handled in the base station.As shown in the figure, at first CRC (902) is calculated at user profile (comprising or do not comprise subscriber equipment ID) (901) in the base station, the base station is done the mask operation to subscriber equipment ID (903) and the CRC that calculates then, generally be mould 2 add operations, xor operation (904) just, this user's transmission block of information (905) is formed in the cascade as a result that the user profile except that subscriber equipment ID and above-mentioned mask are operated in last base station.
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 at 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, the base station is done the mask operation to subscriber equipment ID after repeating and the CRC that calculates then, generally be mould 2 add operations, xor operation (1005) just, this user's transmission block of information (1006) is formed in the cascade as a result that the user profile except that subscriber equipment ID and above-mentioned mask are operated in last base station.
Figure 11 is when subscriber equipment ID length during less than CRC length, and the base station is by handling 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 at 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), punching or repeated matching are to CRC length (1105) then, the base station is done the mask operation to subscriber equipment ID after handling and the CRC that calculates then, generally be mould 2 add operations, xor operation (1106) just, this user's transmission block of information (1107) is formed in the cascade as a result that the user profile except that subscriber equipment ID and above-mentioned mask are operated in last base station.
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), 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 then, 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 receives from signal of base station by antenna (800) and radio-frequency transmitter (801), through mould/transformation of variables (802), remove Cyclic Prefix (803), demodulation (804), the data deinterlacing that subscriber equipment sends the base station, separate the block of information that rate-matched and decoding (805) obtain comprising a plurality of user equipment informations, whether end user Equipment Inspection base station is that it has sent information and has done suitable processing (806).
Claims (20)
1. the method for CRC check and encoding process is done to information transmitted in a base station, comprises the steps:
A) base station is respectively at the information processing CRC check information of each subscriber equipment;
B) base station cascades up handling the transmission block of information that obtains at each subscriber equipment;
C) encode to the block of information that cascade obtains in the base station.
2. method according to claim 1 is characterized in that in step a), and the CRC that calculate at each user equipment specific information the base station can do certain with its information specific and handle the bit number that reduces transmission information.
3. method according to claim 2 is characterized in that comprising step:
CRC is calculated according to the user equipment specific information except that subscriber equipment ID in the base station;
Then subscriber equipment ID and the CRC that calculates are done the mask operation;
The transmission block of information of this subscriber equipment is formed in CRC behind the mask and the user equipment specific information cascade except that subscriber equipment ID.
4. method according to claim 3 is characterized in that the mask operation is mould 2 add operations.
5. method according to claim 3 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.
6. method according to claim 3 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.
7. method according to claim 1 is characterized in that in step b), and 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.
8. method according to claim 1, it is characterized in that in step b), the base station is divided into a plurality of groups to subscriber equipment according to factors such as user device channel conditions, thereby respectively at 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.
9. method according to claim 1 is characterized in that in step c), and CRC check information is not added at the block of information that this cascade is formed in the base station.
10. a subscriber equipment comprises the steps: the method that information transmitted is decoded and CRC check is handled
A) subscriber equipment receives signal of base station, and decoding obtains comprising the block of information that sends to a plurality of user equipment informations on the resource of correspondence;
B) subscriber equipment successively verification this comprise each block of information in the block of information of a plurality of user equipment informations at special user equipment, with oneself subscriber equipment ID verification it whether send to oneself.
11. method according to claim 10 is characterized in that in step b), subscriber equipment does not carry out whole CRC check to the block of information that this comprises a plurality of user equipment informations.
12. method according to claim 10 is characterized in that in step b), subscriber equipment judges that the base station is that subscriber equipment thinks that the block of information at special user equipment that first verification is passed through sends to oneself for its method that has sent information.
13. method according to claim 10 is characterized in that in step b), subscriber equipment judges that the base station is to make a decision after all block of informations at special user equipment of subscriber equipment verification for its method that has sent information.
14. method according to claim 13 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.
15. method according to claim 13 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.
16. method according to claim 13 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.
17. method according to claim 16, it is characterized in that the information when the base station sends is when controlling signaling, the 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 sends to oneself.
18. method according to claim 10, it is characterized in that in step b), if subscriber equipment after testing all block of informations at 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.
19. do information transmitted a base station, and CRC check is handled and the equipment of coding, comprises the module of the CRC of calculating and process user information, is used to calculate the CRC of user profile, and reduces bit number by handling; Cascade module, being used for the user profile that has increased check information cascaded up is directly inputted to coding module.
20. a subscriber equipment comprises segmentation module to the equipment of information transmitted decoding and CRC check processing, 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 at special user equipment; The verification module is used for each block of information at 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.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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 true CN101001127A (en) | 2007-07-18 |
| CN101001127B CN101001127B (en) | 2013-04-10 |
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| CN 200610006525 Expired - Fee Related CN101001127B (en) | 2006-01-10 | 2006-01-10 | Equipment and method of correcting and coding for transmission information |
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Cited By (8)
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| CN102325003A (en) * | 2011-07-14 | 2012-01-18 | 海能达通信股份有限公司 | Method for data error detection, device and communication system |
| CN102379108A (en) * | 2009-04-01 | 2012-03-14 | 皇家飞利浦电子股份有限公司 | Frame concatenation in wireless uwb devices |
| CN102612173A (en) * | 2011-01-21 | 2012-07-25 | 芯讯通无线科技（上海）有限公司 | Multi-mode mobile phone and method for communication between communication modules of multi-mode mobile phone |
| CN104836653A (en) * | 2007-01-09 | 2015-08-12 | 华为技术有限公司 | Base station device, mobile station device, control information transmitting method, control information receiving method and program |
| CN105005733A (en) * | 2015-06-11 | 2015-10-28 | 天地融科技股份有限公司 | Character display method, character display system and intelligent secret key equipment |
| CN106533958A (en) * | 2016-12-05 | 2017-03-22 | 国网浙江省电力公司杭州供电公司 | Data consistency check method of heterogeneous system of cross-network isolation device |
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| 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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| DE69831799T2 (en) * | 1998-07-28 | 2006-06-22 | Lucent Technologies Inc. | Transmission power control for packet-switched communication systems |
| US6915473B2 (en) * | 2001-05-14 | 2005-07-05 | Interdigital Technology Corporation | Method and system for implicit user equipment identification |
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| CN106533958A (en) * | 2016-12-05 | 2017-03-22 | 国网浙江省电力公司杭州供电公司 | Data consistency check method of 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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