CN108365917A - A method of real time monitoring and raising twisted-pair feeder DAS system data transmission credibility - Google Patents
A method of real time monitoring and raising twisted-pair feeder DAS system data transmission credibility Download PDFInfo
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- CN108365917A CN108365917A CN201711433128.7A CN201711433128A CN108365917A CN 108365917 A CN108365917 A CN 108365917A CN 201711433128 A CN201711433128 A CN 201711433128A CN 108365917 A CN108365917 A CN 108365917A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of method of real time monitoring and raising twisted-pair feeder DAS system data transmission credibility, DAS system is divided into access unit (AU), expanding element (EU) and distal end capping unit (RU).Carried out data transmission using CPRI frames or the CPRI frames Resealed between each unit, transmitting terminal verifies the data of transmission, and check value is sent collectively to receiving terminal, receiving terminal verifies the data and check value of reception again, realizes real time monitoring and statistics to data transmission credibility.For the reliable and stable work of system, using multiple read error register, continues to exceed that thresholding is accumulative and multiple PHY adaptive modes again, allow equipment to attempt to restore normal work, a series of measures of alarm notification administrator is generated after attempting to fail.
Description
Technical field
The present invention relates to the indoor distributed antenna system field (DAS) more particularly to a kind of real time monitoring and raising multiple twins
The method of line DAS system data transmission credibility.
Background technology
With the fast development of mobile Internet, indoor distributed system needs are replaced, upgrade, to provide preferably letter
Number covering.In order to reduce Construction Cost and difficulty, it would be desirable to it is updated upgrading in original indoor distribution equipment,
Equipment before replacement as few as possible.Using existing a large amount of CAT6/CAT5 cables in building, the biography of data is realized
It is defeated, signal covering is completed, optimal selection is become.
Pervious DAS system is carried out data transmission with optical fiber, and optical fiber has good electromagnetism interference, strong security, speed
The features such as degree is fast, transmission reliability is strong.Twisted-pair feeder opposed optical fibers electromagnetism interference is less better, is easy to be done by the external world
It disturbs.It is covered in order to not influence signal, the normal work of interference base station, it is necessary to the reliability of twisted-pair feeder DAS system data transmission
It is monitored in real time.
Herein based under above-mentioned background, a kind of real time monitoring of proposition and raising twisted-pair feeder DAS system data transmission are reliable
Property method, ensure the stabilization of data transmission, reliably, realize the covering of good signal.
Invention content
The present invention provides a kind of method of real time monitoring and raising twisted-pair feeder DAS system data transmission credibility.
The technical scheme is that：
1, have respectively in DAS system AU (Access Unit access units), EU (Expansion Unit far-end units) and
RU (Remote Unit expanding elements).Each unit is both provided with the PHY for supporting IEEE802.3an and IEEE 802.3bz standards
Chip passes through twisted pair line connection.
2, each AU (Access Unit access units), EU (Expansion Unit far-end units) and RU in DAS system
The CPRI frames formed inside the FPGA of (Remote Unit expanding elements), CPRI frames not only transmit control word, and I/Q data is gone back
Increase the verification to I/Q data, the CRC check of the method for calibration use of I/Q data.
3, receiving terminal verifies the I/Q data and check value that receive again, when there is verifying not clock synchronization, in FPGA
In add up to error register.
4, there are two the error registers of receiving terminal.First for judging current data transmission link if appropriate for just
Often work；Second for recording the bit error rate that data transmission link works long hours, response data transmission quality.
5, judge that link is if appropriate for the method for normal work with first register：This register is read by ARM
Value, and is timed clearings, when it is continuous there is register and be more than certain thresholding when, allow receiving terminal PHY to data link again
Adaptively.If after again adaptive, no longer there is the case where continuing to exceed thresholding in first register, it is believed that data link into
The state of row normal work.If after again adaptive, still there is the case where continuing to exceed thresholding, generates one and alert and simultaneously closes
Close current data channel.
6, alarm is generated, data channel is closed, needs administrator to remove alarm, then return to normal state.
Description of the drawings
Fig. 1 is the schematic diagram of transmitting terminal and reception end frame in the present invention；
Fig. 2 is that CPRI frames are included information schematic diagram in the present invention；
Fig. 3 is the flow chart for monitoring error register in the present invention in real time.
Specific implementation mode
The invention will be described further with reference to the accompanying drawings and examples：
As shown in Figure 1, transmitting terminal and the schematic diagram for receiving end frame in DAS equipment.The present embodiment uses CPRI (Common
Public Radio Interface) agreement, each unit interconnection is using twisted-pair feeder as transmission medium, it is therefore desirable to pass through PHY
Chip is as transmission.Structure includes the CPRI frames of CRC check as shown in Figure 2 in the FPGA of transmitting terminal, and sends PHY chip,
It is sent to receiving terminal by CAT5/CAT5E/CAT6/CAT6A twisted-pair feeders.The PHY chip of receiving terminal, which receives data and is sent to, to be connect
Receiving end FPGA, FPGA recover CPRI frames again, and are verified to the I/Q data of CPRI frames.When there is verifying not clock synchronization, just
Error register adds up in FPGA.There are two error registers.First for judging current data transmission link
If appropriate for normal work；Second for recording the bit error rate that data transmission link works long hours, response data transmission matter
Amount.
As shown in Figure 3.A method of real time monitoring and raising twisted-pair feeder DAS system data transmission credibility work as reception
After end starts, include the following steps：
Step a. first determines whether the synchronous regime of CPRI, if asynchronous, waits for synchronizing.First is read after synchronous
Error register；
Step b. judges whether register is more than thresholding, if no more than thresholding, just resets error register and surpasses with continuous
First error register is read in the counting for crossing thresholding again after waiting for a period of time.If it exceeds thresholding, just to continuing to exceed door
The number of limit adds up；
Step c. judges whether to reach the number for continuing to exceed thresholding, if being no more than number, just resets first mistake
Register after waiting for a period of time, then reads first error register, is then recycled until even between step b and step c
The continuous number more than thresholding is more than thresholding；
Step d. continues to exceed the number of thresholding more than after thresholding, needs to judge current CPRI synchronous regimes again, if
It is asynchronous to return to step a, the number for continuing to exceed thresholding is reset if synchronous；
After the number that step e. continues to exceed thresholding is more than thresholding, need to judge to PHY again adaptive number, such as
Fruit is no more than thresholding, and the adaptive numbers of PHY are added up, then allow PHY again adaptive, and returns to step a.Make PHY heavy
New is adaptively that expected data transmission link is restored to normal state.If it exceeds thresholding, that is, generate alarm, and close
Data transmission link avoids unsure state from influencing the normal work of base station；
Step f. generates alarm, and closes data transmission link, needs administrator's cleared alarm, otherwise wait for always.
After cleared alarm, resets the adaptive numbers of PHY and return to step a.
Above example is only used for better illustrating the present invention rather than limitation of the invention.Within the scope of the invention,
Variation, the modification of above example are fallen within protection scope of the present invention.
Claims (5)
1. a kind of method of real time monitoring and raising twisted-pair feeder DAS system data transmission credibility, the DAS system includes access
Unit AU, far-end unit EU and expanding element RU, the access unit AU, far-end unit EU and expanding element RU are respectively provided with FPGA
Module, it is characterised in that：It is double by PHY chip between the access unit AU, far-end unit EU and expanding element RU each units
Twisted wire connects, and data CPRI frames or the CPRI frames Resealed are transmitted, and is carried out to the data of transmission in transmitting terminal
Verification, and check value is sent to receiving terminal in CPRI frames；Receiving terminal to the data received verify and receive again
To check value carry out comparison verification.
2. the method for real time monitoring according to claim 1, and raising twisted-pair feeder DAS system data transmission credibility,
It is characterized in that：In record verification mode, using two error registers；There is verifying not clock synchronization, to error register into
Row is cumulative；First for judging current data transmission link if appropriate for normal work；Second for recording data biography
The bit error rate that transmission link works long hours, response data transmission quality.
3. the method for real time monitoring according to claim 1 and raising twisted-pair feeder DAS system data transmission credibility, special
Sign is：The CPRI of the CPRI frame framings of transmitting terminal, the verification to transmission data, receiving terminal is synchronized, frame decoding, to the number received
According to being verified, there are check errors and count cumulative to realize in the FPGA module；Cumulative clearing is counted to check errors,
Continue to exceed thresholding judgement, if adaptively completed again by ARM to the PHY.
4. the method for real time monitoring according to claim 1 and raising twisted-pair feeder DAS system data transmission credibility, special
Sign is：When DAS system is run, in order to which the reliable and stable work of system continues to exceed door using multiple read error register
Again adaptive three kinds of methods combine the accumulative and multiple PHY of limit, realize and exclude erroneous judgement, attempt to restore normal work
Make, reach real time monitoring and improves the reliability of data transmission.
5. the method for real time monitoring according to claim 1 and raising twisted-pair feeder DAS system data transmission credibility, special
Sign is：Repeatedly again adaptive to the PHY, when being still unable to reach the requirement that system correctly works, it is logical to generate alarm
Administrator is crossed, and closes data transmission link, after needing administrator to remove alarm, could work normally, avoid due to number
According to the unreliable of transmission link, the irregular working of base station is caused.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711433128.7A CN108365917A (en) | 2017-12-26 | 2017-12-26 | A method of real time monitoring and raising twisted-pair feeder DAS system data transmission credibility |
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| CN201711433128.7A CN108365917A (en) | 2017-12-26 | 2017-12-26 | A method of real time monitoring and raising twisted-pair feeder DAS system data transmission credibility |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110278572A (en) * | 2019-06-24 | 2019-09-24 | 京信通信系统（中国）有限公司 | Data transmission method, main computer unit, expanding element and base station system |
| CN110380907A (en) * | 2019-07-26 | 2019-10-25 | 京信通信系统（中国）有限公司 | A kind of network fault diagnosis method, device, the network equipment and storage medium |
| CN114978417A (en) * | 2022-03-29 | 2022-08-30 | 浙江大学 | Data communication verification method and system based on two BLVDS buses |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005450A (en) * | 2006-12-15 | 2007-07-25 | 上海华为技术有限公司 | General public radio interface data transmission method and its device and system |
| CN101242435A (en) * | 2006-02-22 | 2008-08-13 | 华为技术有限公司 | Interface device for connecting master base station and RRU |
| CN101839995A (en) * | 2009-03-18 | 2010-09-22 | 中国石油天然气集团公司 | Seismic data long distance transmission method and system |
| CN102118795A (en) * | 2009-12-31 | 2011-07-06 | 华为技术有限公司 | Base station and method for transmitting common public radio interface data in base station |
| CN102340368A (en) * | 2010-07-19 | 2012-02-01 | 中兴通讯股份有限公司 | Method, system and device for monitoring error codes in CPRI (Common Public Radio Interface) link |
| CN103379674A (en) * | 2013-07-24 | 2013-10-30 | 三维通信股份有限公司 | Multimode digital DAS supporting multi-information-source access |
| CN103702339A (en) * | 2013-12-10 | 2014-04-02 | 三维通信股份有限公司 | WLAN (wireless local area network) realization method for integrated distributed access system |
| CN103780438A (en) * | 2013-12-31 | 2014-05-07 | 广东九博电子科技有限公司 | Network management frame sending method based on FPGA network management system |
| CN104980207A (en) * | 2014-04-02 | 2015-10-14 | 常州隽通电子技术有限公司 | Expansion unit |
| CN105187161A (en) * | 2015-09-11 | 2015-12-23 | 深圳三星通信技术研究有限公司 | Transmission method and transmission device of CPRI frame in the Ethernet |
| CN106471754A (en) * | 2014-06-11 | 2017-03-01 | 康普技术有限责任公司 | By the bit rate efficient transmission of distributing antenna system |
| CN106937331A (en) * | 2015-12-31 | 2017-07-07 | 大唐移动通信设备有限公司 | A kind of baseband processing method and device |
| CN107409308A (en) * | 2015-03-30 | 2017-11-28 | 约翰·梅扎林瓜联合有限公司 | For providing system, method and the manufacture of the network service for including Information Mobile Service to position |
-
2017
- 2017-12-26 CN CN201711433128.7A patent/CN108365917A/en not_active Withdrawn
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242435A (en) * | 2006-02-22 | 2008-08-13 | 华为技术有限公司 | Interface device for connecting master base station and RRU |
| CN101005450A (en) * | 2006-12-15 | 2007-07-25 | 上海华为技术有限公司 | General public radio interface data transmission method and its device and system |
| CN101839995A (en) * | 2009-03-18 | 2010-09-22 | 中国石油天然气集团公司 | Seismic data long distance transmission method and system |
| CN102118795A (en) * | 2009-12-31 | 2011-07-06 | 华为技术有限公司 | Base station and method for transmitting common public radio interface data in base station |
| US20130003677A1 (en) * | 2009-12-31 | 2013-01-03 | Huawei Technologies Co., Ltd. | Radio Base Station and Method for Transmitting Common Public Radio Interface Data in Radio Base Station |
| CN102340368A (en) * | 2010-07-19 | 2012-02-01 | 中兴通讯股份有限公司 | Method, system and device for monitoring error codes in CPRI (Common Public Radio Interface) link |
| CN103379674A (en) * | 2013-07-24 | 2013-10-30 | 三维通信股份有限公司 | Multimode digital DAS supporting multi-information-source access |
| CN103702339A (en) * | 2013-12-10 | 2014-04-02 | 三维通信股份有限公司 | WLAN (wireless local area network) realization method for integrated distributed access system |
| CN103780438A (en) * | 2013-12-31 | 2014-05-07 | 广东九博电子科技有限公司 | Network management frame sending method based on FPGA network management system |
| CN104980207A (en) * | 2014-04-02 | 2015-10-14 | 常州隽通电子技术有限公司 | Expansion unit |
| CN106471754A (en) * | 2014-06-11 | 2017-03-01 | 康普技术有限责任公司 | By the bit rate efficient transmission of distributing antenna system |
| CN107409308A (en) * | 2015-03-30 | 2017-11-28 | 约翰·梅扎林瓜联合有限公司 | For providing system, method and the manufacture of the network service for including Information Mobile Service to position |
| CN105187161A (en) * | 2015-09-11 | 2015-12-23 | 深圳三星通信技术研究有限公司 | Transmission method and transmission device of CPRI frame in the Ethernet |
| CN106937331A (en) * | 2015-12-31 | 2017-07-07 | 大唐移动通信设备有限公司 | A kind of baseband processing method and device |
Non-Patent Citations (3)
| Title |
|---|
| PAUL HARDY: "XCPRI:A Single-Chip CPRI PHY Layer Implement in the Virtex-II Pro FPGA", 《HTTPS://WWW.DOCIN.COM/P-1470316075.HTML》 * |
| 石磊: "高性能室内分布系统——"点"系统（RDS）应用研究", 《邮电设计技术》 * |
| 莱迪思半导体公司: "用成本优化的FPGA支持基于CPRI的分布式结构", 《电子设计应用》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110278572A (en) * | 2019-06-24 | 2019-09-24 | 京信通信系统（中国）有限公司 | Data transmission method, main computer unit, expanding element and base station system |
| US10939451B2 (en) | 2019-06-24 | 2021-03-02 | Comba Telecom Technology (Guangzhou) Limited | Data transmission method, host unit, extension unit, and base station system |
| CN110380907A (en) * | 2019-07-26 | 2019-10-25 | 京信通信系统（中国）有限公司 | A kind of network fault diagnosis method, device, the network equipment and storage medium |
| CN110380907B (en) * | 2019-07-26 | 2021-09-24 | 京信网络系统股份有限公司 | Network fault diagnosis method and device, network equipment and storage medium |
| CN114978417A (en) * | 2022-03-29 | 2022-08-30 | 浙江大学 | Data communication verification method and system based on two BLVDS buses |
| CN114978417B (en) * | 2022-03-29 | 2023-12-19 | 浙江大学 | Data communication verification method and system based on two-way BLVDS buses |
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