CN1501729A - A method for data transmission between base station transmitting-receiving platform and base station controller - Google Patents
A method for data transmission between base station transmitting-receiving platform and base station controller Download PDFInfo
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- CN1501729A CN1501729A CNA021489602A CN02148960A CN1501729A CN 1501729 A CN1501729 A CN 1501729A CN A021489602 A CNA021489602 A CN A021489602A CN 02148960 A CN02148960 A CN 02148960A CN 1501729 A CN1501729 A CN 1501729A
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Abstract
The invention provides a data transmission method between a base station receiving and transmitting station and base station controller which comprises, on the data transmitting side of the two-way interface between the base station receiving and transmitting station and the base station controller, proceeding error correction encoding to the transmitted data, then the added error correction information data being two-way transmitted between a base station receiving and transmitting station and base station controller, then on the data receiving side of the two-way interface between the base station receiving and transmitting station and the base station controller, proceeding decoding to the error correction information data. The method by the invention can select error correction coding scheme and redundancy ratio self-adaptively, thus improving the transmission quality to the maximum.
Description
Technical field
The present invention relates to mobile communication system, especially relate to the technical field of data transmission between the base transceiver station and base station controller in the mobile communication system.
Technical background
In mobile communication system, have data-interface between base transceiver station (BTS) and the base station controller (BSC), be used for the transmission of voice, signaling.This interface has different titles in the different mobile communication system, be meant the Abis interface between BTS and the BSC in gsm system or CDMA2000 system; In the WCDMA system, BTS can be called NodeB, and BSC can be called RNC, and this interface is meant the Iub interface between NodeB and the RNC.
In actual use, BTS is with in BSC often is installed in different machine rooms, and the transmission of data-interface is finished by transmission system between BTS and the BSC, generally adopts optical fiber, microwave, satellite, XDSL transmission meanss such as (Digital Subscriber Line).Wherein the transmission quality of part transmission means under a stable condition is relatively poor, as microwave, XDSL etc., will bring adverse influence for the operate as normal of base station system like this, even system can't work.
So the error correcting technique of chnnel coding is the important component part of digital communication system.For many digital communication systems, need guarantee the errorless of message transmission, but in digital communication system, particularly digit wireless communication system, the influence that digital information is disturbed in transmission course and code element information is degenerated, thereby, cause message transmission to make a mistake receiving the judgement that mistake may appear in data side.Forward error correction (FEC) technology that error correcting technique, particularly real-time system are commonly used is a main method of guaranteeing transmission quality.
Error correction coding commonly used comprises linear block code (as Hamming code, BCH code) and convolution code.By sending data side, and the check information of additional this grouping for digital information divide into groups (length k), obtain the information sets that length is N, (N-k) promptly additional check information wherein, (N-k)/N is called the redundancy ratio of error correction coding.Receiving data side, be the information sets of N for length, the mistake of utilizing additional check information may occur in transmission course information sets is judged and is corrected.The mistake of declaring of reaction error correcting capability is relevant with sign indicating number type, redundancy ratio and the decoding process of error correction coding with error correction, and for same class coding, the high more error correcting capability of redundancy ratio is strong more.Often research for a long time, error correcting technique has been tending towards ripe and has been widely used.In the wireless message breath transmission of mobile communcations system, just use multiple error correcting technique.
And the most transfer resources of having more than needed that exist of the transmission system between while BTS and the BSC, these transfer resources are not used.
Summary of the invention
Purpose of the present invention is exactly the data transmission method that proposes between a kind of base transceiver station and the base station controller, can increase the error correction processing function of chnnel coding, thereby make the transfer of data of interface have fault-tolerant ability.
Data transmission method between a kind of base transceiver station and the base station controller may further comprise the steps:
A, between described base transceiver station (BTS) and base station controller (BSC) the transmission data side of bi-directional data interface, the data that send are carried out error correction coding;
The data of b, additional error correction information are carried out transmitted in both directions by transmission equipment between described BTS and described BSC;
C, between described BTS and described BSC the reception data side of bi-directional data interface, the data of additional error correction information are carried out error correction decoding.
Chnnel coding between described BTS and the described BSC can select to satisfy the coded system that redundancy ratio requires according to the bandwidth of residue transfer resource.
Chnnel coding between described BTS and the described BSC can increase transmission bandwidth according to transmission quality, selects to satisfy the coded system that redundancy ratio requires.
Transmission equipment described in the step b can be microwave or XDSL.
Data-interface between described BTS and the described BSC is the E1 interface of PCM primary group.
Data-interface between described BTS and the described BSC is the ATM(Asynchronous Transfer Mode) interface.
Adopt the present invention, can select the mode and the redundancy ratio of error correction coding adaptively, thereby farthest improved transmission quality.
Description of drawings
Fig. 1 is an interface data transmission flow chart of the present invention;
Fig. 2 is a selection coded system flow chart of the present invention;
Fig. 3 is the transfer of data flow process figure in the specific embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
As shown in Figure 1, in the data message by data-interface between the BTS of base station system and BSC, increase the error correction processing function of chnnel coding, thereby make the transfer of data of interface have fault-tolerant ability.
In order to guarantee the consistency of data-interface between BTS and the BSC, its physical layer generally is the E1 interface of PCM primary group or the atm interface of asynchronous communication pattern, but valid data wherein are that there is different surplus resources in the transmission of ordinary circumstance lower interface by the size decision of voice channel, signaling channel and the maintenance information of transmission.
In order to utilize the surplus resources of transmission fully, according to the bandwidth of residue transfer resource, select suitable error correction coding mode and redundancy ratio, guaranteeing not increase the optimum transmission error tolerance performance of acquisition under the transmission bandwidth situation.
When the correction process of finishing under the remaining bandwidth situation of utilizing existing transmission still can't satisfy the quality requirement of transmission, increase transmission bandwidth that can be suitable was to select the mode that the error correction coding mode is good and redundancy ratio is high, with good transmission quality after the acquisition error correction.
Microwave and XDSL system for some transmission conditions situation, declined by the rain of lake surface as microwave transmission influences, and under the XDSL transmission range is far away, telephone wire the connects up unreasonable situation, transmission second-rate uses the base station system operate as normal of this transmission means to be affected.When the error correction that utilizes remaining transfer resource can not obtain good effect, suitably add large transmission bandwidth adopting suitable error correction coding, and then obtain good transmission quality.
Data-interface between BTS and the BSC is two-way, and data rate is basic identical.
Transmission data side at the bi-directional data interface, utilize existing chnnel coding algorithm, data are carried out error correction coding, promptly at first divide into groups for existing data, according to existing error correction/encoding method grouping information is added error correction information, and then form new grouped data.
The grouped data of additional error correction information data is carried out transmitted in both directions by transmission equipments such as microwave, XDSL between BTS and BSC.
The reception data side of bi-directional data interface between BTS and BSC is utilized existing error correction decoding method, and the grouped data of additional error correction information is carried out error correction decoding.Thereby realize the fault-tolerant ability of base station to transmission.
Generally speaking, the decoding algorithm of forward error correction and amount of calculation are more complex than error correction coding far away, and for error correcting code types such as convolution codes, adopt different decoding algorithms can obtain different error correction effects.
The mistake of declaring of reaction error correcting capability is relevant with sign indicating number type, redundancy ratio and the decoding process of error correction coding with error correction, and for same class coding, the high more error correcting capability of redundancy ratio is strong more.
As shown in Figure 2,, select the mode and the redundancy ratio of error correction coding adaptively, thereby farthest improve transmission quality, make the transfer of data of base station system interface have good fault-tolerant ability according to residue transfer resource bandwidth or transmission quality.
As shown in Figure 3, when above-mentioned mobile communcations system is Golbal System for Mobile Communic-ations, be generally the 2M primary group E1 interface of standard between BTS and the BSC, utilize optical fiber, microwave, XDSL etc. to realize the transmission of data generally speaking.By the data interface is increased error correction, can reduce the requirement of base station system for transmission quality, improve the adaptive capacity of base station for environment.
Active data in the data-interface of 2M bandwidth between base transceiver station and the base station controller is by the carrier frequency quantity of base transceiver station, signaling channel configuration and the decision of maintenance link bandwidth.For concrete error correction coding mode, utilize the surplus resources of transmission to select good error correction coding to obtain required error correction effect at first as far as possible; If can't satisfy, the then suitable large transmission bandwidth that adds is to obtain good transmission quality.
By in the data message of data-interface, increasing the error correction processing function of chnnel coding, realize the fault-tolerant ability of base station system for transmission, solve the problem that base station system that poor transmission brings can't steady operation, thereby reduce the requirement of base station, improve the engineering application adaptation ability of base station for transmission quality.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (6)
1, data transmission method between a kind of base transceiver station and the base station controller is characterized in that may further comprise the steps:
A, between described base transceiver station (BTS) and base station controller (BSC) the transmission data side of bi-directional data interface, the data that send are carried out error correction coding;
The data of b, additional error correction information are carried out transmitted in both directions by transmission equipment between described BTS and described BSC;
C, between described BTS and described BSC the reception data side of bi-directional data interface, the data of additional error correction information are carried out error correction decoding.
2, data transmission method between a kind of base transceiver station as claimed in claim 1 and the base station controller is characterized in that: the chnnel coding between described BTS and the described BSC can select to satisfy the coded system that redundancy ratio requires according to the bandwidth of residue transfer resource.
3, data transmission method between a kind of base transceiver station as claimed in claim 1 and the base station controller, it is characterized in that: the chnnel coding between described BTS and the described BSC can increase transmission bandwidth according to transmission quality, selects to satisfy the coded system that redundancy ratio requires.
4, as data transmission method between claim 2 or 3 described a kind of base transceiver stations and the base station controller, it is characterized in that: the data-interface between described BTS and the described BSC is the E1 interface of PCM primary group.
5, as data transmission method between claim 2 or 3 described a kind of base transceiver stations and the base station controller, it is characterized in that: the data-interface between described BTS and the described BSC is the ATM(Asynchronous Transfer Mode) interface.
6, data transmission method between a kind of base transceiver station as claimed in claim 1 and the base station controller, it is characterized in that: the transmission equipment described in the step b can be microwave or XDSL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02148960 CN1231080C (en) | 2002-11-14 | 2002-11-14 | A method for data transmission between base station transmitting-receiving platform and base station controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 02148960 CN1231080C (en) | 2002-11-14 | 2002-11-14 | A method for data transmission between base station transmitting-receiving platform and base station controller |
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| CN1501729A true CN1501729A (en) | 2004-06-02 |
| CN1231080C CN1231080C (en) | 2005-12-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417252C (en) * | 2005-09-02 | 2008-09-03 | 上海华为技术有限公司 | Mobile communication base site sub-system and method of transmitting data thereof |
| CN101018107B (en) * | 2006-02-07 | 2011-11-02 | 日本电气株式会社 | Data sending device, data receiving device, data sending method, and data receiving method |
| WO2011157174A2 (en) * | 2011-06-03 | 2011-12-22 | 华为技术有限公司 | Method, device and system for processing data |
| CN101557277B (en) * | 2008-04-10 | 2013-08-28 | 华为技术有限公司 | Method and equipment for data transmission between base station and network node based on loading network |
-
2002
- 2002-11-14 CN CN 02148960 patent/CN1231080C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417252C (en) * | 2005-09-02 | 2008-09-03 | 上海华为技术有限公司 | Mobile communication base site sub-system and method of transmitting data thereof |
| CN101018107B (en) * | 2006-02-07 | 2011-11-02 | 日本电气株式会社 | Data sending device, data receiving device, data sending method, and data receiving method |
| CN101557277B (en) * | 2008-04-10 | 2013-08-28 | 华为技术有限公司 | Method and equipment for data transmission between base station and network node based on loading network |
| WO2011157174A2 (en) * | 2011-06-03 | 2011-12-22 | 华为技术有限公司 | Method, device and system for processing data |
| WO2011157174A3 (en) * | 2011-06-03 | 2012-05-03 | 华为技术有限公司 | Method, device and system for processing data |
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| Publication number | Publication date |
|---|---|
| CN1231080C (en) | 2005-12-07 |
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Granted publication date: 20051207 Termination date: 20191114 |