WO2014015799A1 - 数据传输方法及装置 - Google Patents
数据传输方法及装置 Download PDFInfo
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- WO2014015799A1 WO2014015799A1 PCT/CN2013/079940 CN2013079940W WO2014015799A1 WO 2014015799 A1 WO2014015799 A1 WO 2014015799A1 CN 2013079940 W CN2013079940 W CN 2013079940W WO 2014015799 A1 WO2014015799 A1 WO 2014015799A1
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- self
- extended control
- superframes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
Definitions
- the present invention relates to the field of communications, and in particular to a data transmission method and apparatus.
- the general public wireless interface (Common Public) is widely used in the development of distributed base station systems in the communication industry.
- the CPRI protocol specifies an interface standard between a radio equipment controller (Radio Equipment Controller, REC for short) and a radio equipment (Radio Equipment, RE for short).
- REC Radio Equipment Controller
- RE Radio Equipment
- 1 is a schematic diagram of interconnection of RECs and REs according to the related art. As shown in FIG. 1, one REC may be connected to multiple REs, and each RE may also be connected to other REs, wherein the connections between the REs may be in a chain structure. It may also have a tree structure or a ring structure.
- CPRI specifies that the period of each basic frame is 1/3.84M, which is composed of a control word plus 15 words, and the control word portion is transmitted first.
- Each 256 basic frames constitutes one superframe, and 150 superframes constitute one 10 ms radio frame.
- the demand for the control word part of the protocol is gradually increasing, and the total number of protocol control words has not evolved simultaneously.
- Embodiments of the present invention provide a data transmission method and apparatus to solve at least the above problems.
- a data transmission method including: when transmitting data between an REC and an RE, setting an extended control word of the RE in multiple superframes, where different superframes The extended control words with the same position have different meanings; the super frame is sent to the opposite end.
- the extended control word of the RE is set in the plurality of super frames to include at least one of the following: according to a pre-agreed, the extended control words of different REs are respectively set in different super frames; according to a pre-agreed, one will be The extended control word of the RE is set in a different superframe.
- setting the extended control word of the RE in multiple superframes includes: expanding the number of control words required according to the RE and for transmitting Extending the number of basic frames of the control word, determining the number of super frames used for transmitting the extended control word, where the number of super frames is at least two; setting the extended control words of the RE to the determined plurality of Superframe.
- the method further includes: the REC sending a self-test signaling data packet to the RE; the RE performing data verification according to the self-test signaling data packet; and the REC receiving the RE feedback After the response message to the self-test signaling packet verification success, it is confirmed that the RE signaling status is normal.
- the performing data verification by the RE according to the self-test signaling data packet includes: determining, by the RE, whether the self-test signaling data packet belongs to itself; determining that the self-test signaling data packet belongs to itself Performing data verification according to the self-test signaling data packet, otherwise, forwarding the self-test signaling data packet to other REs for other REs to perform data verification; after the data verification is successful, to the REC Sending a response message to the self-test signaling packet verification success.
- a data transmission apparatus located on the REC and/or RE side, comprising: a setting module configured to expand the RE when transmitting data between the REC and the RE
- the control word is set in a plurality of superframes, wherein the meanings of the extended control words having the same position in different superframes are different;
- the sending module is configured to send the superframe to the opposite end.
- the setting module is set to at least one of the following: according to a pre-agreed, the extended control words of different REs are respectively set in different super frames; according to a pre-agreed, the extended control words of one RE are set in different super In the frame.
- the setting module is further configured to: determine, according to the number of extended control words required by the RE and the number of basic frames used for transmitting the extended control word, the number of super frames used for transmitting the extended control word, The number of super frames is at least two; and the extended control words of the RE are respectively set in the determined plurality of super frames.
- the device further includes: a self-test module, configured to confirm, according to the self-test response data packet, that the RE signaling status is normal, where the self-test response data packet sent by the RE is received, where The self-test response data packet is that the RE performs data verification according to the received REC self-test signaling data packet and is sent after the verification succeeds.
- the device further includes: a self-test module, configured to determine whether the self-test signaling data packet sent by the received REC belongs to a current RE, and in a case where determining that the self-test signaling data packet belongs to a current RE Performing data verification according to the self-test signaling data packet. Otherwise, forwarding the self-test signaling data packet to other REs for other REs to perform data verification, and after the data verification is successful, to the The REC sends a response message to the successful verification of the self-test signaling packet.
- a self-test module configured to determine whether the self-test signaling data packet sent by the received REC belongs to a current RE, and in a case where determining that the self-test signaling data packet belongs to a current RE Performing data verification according to the self-test signaling data packet. Otherwise, forwarding the self-test signaling data packet to other REs for other REs to perform data verification, and after the data verification is successful, to the The REC sends a response message to the successful verification of the self
- the extended control word of the RE when data is transmitted between the wireless device controller REC and the wireless device RE, the extended control word of the RE is set in multiple superframes, wherein the meanings of the extended control words having the same position in different superframes Differently, the superframe is sent to the opposite end, which solves the problem that the control word is limited and cannot satisfy the requirement, thereby achieving the effect of increasing the control word.
- FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention
- FIG. 3 is a structural block diagram of a data transmission apparatus according to an embodiment of the present invention.
- 4 is a flow chart of a data transmission method according to a preferred embodiment of the present invention
- FIG. 4a is a schematic diagram of a control word expansion manner in CPRI according to an embodiment of the present invention
- FIG. 5 is a data transmission according to a preferred embodiment of the present invention.
- Method 2 of the method is a flow chart of a signaling online self-test downlink processing method according to a preferred embodiment of the present invention.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
- Embodiment 1 The embodiment of the present invention provides a data transmission method.
- FIG. 1 The embodiment of the present invention provides a data transmission method.
- Step S202 transmitting between REC and RE
- the extended control word information of the RE is set in a plurality of superframes, wherein the meanings of the extended control word information having the same position in different superframes are different.
- Step S204 sending a superframe to the opposite end.
- the extended control word information of the RE is set in multiple superframes, wherein the meanings of the extended control word information having the same position in different superframes are different, and the control word information of the RE in the related art is changed in different superframes.
- the same meaning of the middle position is the same, that is, by transmitting a plurality of super frames, the meanings of the control words having the same position in each super frame are not the same, so that the problem that the control words are limited and cannot meet the requirements can be solved.
- there are many ways to set the extended control word This embodiment provides the following two preferred modes: The extended control word information of different REs can be set in different super frames according to a predetermined agreement; It is pre-agreed to set the extended control word information of one RE in different superframes.
- there are many ways to determine a plurality of superframes and further set control words for example, determining the number of extended control words required by the RE and the number of basic frames used for transmitting the extended control words.
- the number of superframes of the control word is extended, wherein the number of superframes is at least two, and then the extended control words required by the RE are respectively set in the determined plurality of superframes. In this way, it is guaranteed that the number of superframes used is the least when transmitting the same extended control word.
- the REC can also send a self-test signaling packet to the RE, and the RE performs data verification according to the self-test signaling packet, and then the REC receives the RE. After the feedback message of the self-test signaling packet verification success is returned, it is confirmed that the RE signaling status is normal.
- the control word of the CPRI protocol includes two kinds of signaling data, namely, Ethernet and slow, that is, High Level Data Link Control (HDLC)
- the logical function is only the underlying transmission.
- the corresponding signaling data is transmitted to the software, and the software detects whether the signaling data is correct, and the logic cannot confirm the correctness of the transmitted data by itself.
- the signaling data is abnormal, it is impossible to intuitively distinguish whether the software processing exception or the logic transmission abnormality increases the difficulty of positioning such faults.
- the method of detecting signaling data by software in the related art is changed, thereby directly determining whether the abnormality is a software abnormality or a logical transfer abnormality.
- self-testing may not be performed. If the REC performs an online self-test, the RE determines whether the self-test signaling packet belongs to itself, and when determining that the self-test signaling packet belongs to itself, performs data verification according to the self-test signaling packet; otherwise, Forward the self-test signaling data packet to other REs for other REs to perform data verification; after the data verification succeeds, The REC sends a response message to the successful verification of the self-test signaling packet.
- the self-test signaling packet received by the RE may belong to itself or may belong to other REs, and different processing is required in different situations.
- the second embodiment of the present invention further provides a data transmission device, which is used to implement the foregoing embodiments and preferred embodiments, and has not been described again.
- the term "module” may implement a combination of software and/or hardware of a predetermined function.
- the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and conceivable.
- 3 is a structural block diagram of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes a setting module 32 and a transmitting module 34.
- a setting module 32 in a wireless device controller
- the extended control word information of the RE is set in a plurality of superframes, wherein the meanings of the extended control word information having the same position in different superframes are different
- the sending module 34 is set to The peer sends the superframe.
- the setting module 32 is set to at least one of the following: according to a pre-agreed, the extended control word information of different REs are respectively set in different super frames; according to a pre-agreed, the extended control word information of one RE is set to be different Superframe.
- the setting module 32 is further configured to: determine, according to the number of extended control words required by the RE and the number of basic frames used for transmitting the extended control word, the number of super frames used for transmitting the extended control word, where The number of frames is at least two; the extended control words required by the RE are respectively set in the determined plurality of superframes.
- the apparatus further includes a self-test module 34 configured to confirm that the RE signaling status is normal according to the self-test response data packet, in the case that the self-test response data packet sent by the RE is received, wherein the self-test response data packet is The RE performs data verification based on the received REC self-test signaling packet and sends it after the verification succeeds.
- the self-test module 34 is configured to perform data verification according to the self-test signaling data packet if it is determined that the self-test signaling data packet sent by the received REC belongs to the current RE, otherwise, the self-test signaling is performed.
- the data packet is forwarded to other REs for data verification by other REs, and after the data verification is successful, a response message for verifying the self-test signaling data packet is sent to the REC.
- Embodiment 3 This embodiment assumes that one REC links 3 REs (RE1 ⁇ RE2 ⁇ RE3) at the same time.
- Each RE adopts a chain topology.
- Each RE end needs to expand X extended control words, and one basic frame only transmits one fixed. Control word.
- FIG. 4 is a flowchart of a data transmission method according to a preferred embodiment of the present invention. As shown in FIG. 4, the process includes the following steps: Step S402: Determine a number of superframes.
- FIG. 4a is a schematic diagram of a control word expansion manner in a CPRI according to an embodiment of the present invention.
- M 6
- Step S404 establishing a correspondence between each RE and each superframe.
- X extended control words of RE1 may be set in the superframe No. 0/1
- X extended control words of RE2 may be set in the superframe 2/3 superframe, in the superframe 4/5 superframe
- the X extended control words of RE3 are set, that is, the X basic frames transmit specific control words of different REs in different super frames according to a predetermined convention.
- Step S406 the REC sends a superframe to the RE.
- RE1 determines whether the superframe is the superframe 0/1, and if so, parses the corresponding extended control word, RE2 and RE3 do not process the superframe, otherwise, the superframe is transmitted to RE2, RE2 determines whether the received superframe is the second/third superframe, and if so, parses out the corresponding extended control word, otherwise passes the superframe to RE3.
- RE3 The processing of RE3 is the same as above, and will not be described here.
- Embodiment 4 assumes that one REC simultaneously links three REs (RE1 ⁇ RE2 ⁇ RE3), each RE adopts a chain topology, and each RE uplink needs to expand Y extended control words, and one basic frame only transmits A fixed control word.
- FIG. 5 is a second flowchart of a data transmission method according to a preferred embodiment of the present invention. As shown in FIG. 5, the process includes the following steps: Step S502: Determine a number of superframes. When the uplink RE end sends data to the REC end, the Y basic frames are used to expand the Y extended control words, and the required number of super frames is determined according to the specific value of Y. In this embodiment, it is assumed that each RE requires two super frames.
- Step S504 establishing a correspondence between each RE and each superframe.
- Upstream RE3 passes Y extended control words to RE2 in the 0#1 superframe; RE2 saves the extended control word of RE3, and then passes its own Y extended control words to the 0#1 superframe.
- RE1, and the extended control word of RE3 is transmitted to RE1 in the superframe No. 2/3; the extended control word of RE1, RE2, RE3 is set in the superframe of 0/1, 2 ⁇ 3, 4 ⁇ 5 in RE1 .
- the extended control word information corresponding to all the uplinks of the uplink is respectively placed in different superframes, that is, the data contained in one superframe is respectively a dedicated extended control word corresponding to the RE.
- the RE sends a superframe to the REC.
- RE1 sends the superframes 0, 1, 2, 3, 4, and 5 of the extended control word of RE1, RE2, and RE3 to REC. After all the REs have transmitted the extended control word, the RE continues to transmit the respective extended control words according to the superframe number, and so on. Step S508, the REC parses the control word.
- FIG. 6 is a flowchart of a signaling online self-test downlink processing method according to a preferred embodiment of the present invention. As shown in FIG. 6, the process includes the following steps: Step S602: The REC periodically initiates verification.
- the REC periodically initiates a check, and the downlink sends a self-test signaling packet, which is a self-set data packet of a special packet format.
- REC Verifies the signaling state of an RE.
- RE1 determines whether it is its own self-test signaling packet. After receiving the self-test signaling packet, RE1 determines whether the self-test signaling packet belongs to itself. If yes, go to step S608, otherwise go to step S606. Step S606, forwarding the self-test signaling data packet.
- RE1 forwards the self-test self-test signaling packet to RE2, and performs step S612.
- Step S608 sending a self-test response packet to the REC.
- RE1 determines whether the content of the self-test signaling packet is correct, and if correct, sends a self-test response packet to the REC. After the REC receives the correct self-test response packet, it considers that the signaling status of RE1 is normal.
- Step S610 RE1 intercepts the self-test signaling data packet.
- RE1 intercepts the self-test signaling packet so that it does not send to RE2 and RE3, and ends the process.
- RE2 determines whether it is a self-test signaling packet.
- RE2 determines whether it is its own self-test signaling data packet. If yes, step S614 is performed, otherwise the self-test signaling data packet is forwarded to RE3, and the processing flow of RE3 is similar to that of RE2, and details are not described herein again.
- Step S614 sending a self-test response data packet to the REC. After determining that the contents of the self-test signaling packet are correct, a self-test response packet is sent and forwarded to the REC via RE1. After the REC receives the correct self-test response packet, it considers that the signaling state of RE2 is normal.
- Step S616, intercepting the self-test signaling data packet.
- the embodiment of the present invention achieves the following technical effects:
- the protocol is supported to support more control words, and the self-detection of the protocol control words can be implemented.
- the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
- the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
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JP2015523400A JP6616184B2 (ja) | 2012-07-23 | 2013-07-23 | データ伝送方法及び装置 |
EP13823434.9A EP2876830B1 (en) | 2012-07-23 | 2013-07-23 | Data transmission method and device |
US14/416,972 US9992767B2 (en) | 2012-07-23 | 2013-07-23 | Data transmission method and device |
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CN201210256042.2 | 2012-07-23 | ||
CN201210256042.2A CN103580780B (zh) | 2012-07-23 | 2012-07-23 | 数据传输方法及装置 |
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EP (1) | EP2876830B1 (zh) |
JP (1) | JP6616184B2 (zh) |
CN (1) | CN103580780B (zh) |
WO (1) | WO2014015799A1 (zh) |
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WO2017193758A1 (zh) * | 2016-05-13 | 2017-11-16 | 华为技术有限公司 | 一种数据传输的方法、设备和系统 |
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CN105790876B (zh) * | 2014-12-26 | 2019-06-18 | 中兴通讯股份有限公司 | 控制字处理方法、装置及通信系统 |
CN106059701B (zh) * | 2016-08-17 | 2018-06-08 | 北京航空航天大学 | 一种通过捕获协议控制帧测试时间触发以太网的时钟同步修正值的装置 |
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- 2013-07-23 US US14/416,972 patent/US9992767B2/en active Active
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JP6616184B2 (ja) | 2019-12-04 |
US20150181585A1 (en) | 2015-06-25 |
EP2876830B1 (en) | 2021-03-03 |
US9992767B2 (en) | 2018-06-05 |
EP2876830A1 (en) | 2015-05-27 |
CN103580780B (zh) | 2018-03-09 |
EP2876830A4 (en) | 2015-09-02 |
CN103580780A (zh) | 2014-02-12 |
JP2015526994A (ja) | 2015-09-10 |
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