WO2014015799A1 - 数据传输方法及装置 - Google Patents

数据传输方法及装置 Download PDF

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Publication number
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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WO
WIPO (PCT)
Prior art keywords
self
extended control
superframes
test
rec
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PCT/CN2013/079940
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English (en)
French (fr)
Inventor
黎永华
杨孝民
王仰锋
游胜
张迪强
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to JP2015523400A priority Critical patent/JP6616184B2/ja
Priority to EP13823434.9A priority patent/EP2876830B1/en
Priority to US14/416,972 priority patent/US9992767B2/en
Publication of WO2014015799A1 publication Critical patent/WO2014015799A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4633Interconnection 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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Abstract

本发明公开了一种数据传输方法及装置,涉及通信领域,该方法包括,在无线设备控制器和无线设备之间传输数据时,将该无线设备的扩展控制字设置在多个超帧中,其中,不同超帧中位置相同的扩展控制字的含义不同,并向对端发送该超帧。本发明通过将无线设备的扩展控制字设置在多个超帧中并且不同超帧中位置相同的扩展控制字的含义不同,解决了协议控制字总数有限而不能满足需要的问题,具有增加协议控制字的有益效果。

Description

数据传输方法及装置 技术领域 本发明涉及通信领域, 具体而言, 涉及一种数据传输方法及装置。 背景技术 目前通讯行业开发分布式基站系统时广泛使用通用公共无线接口(Common Public
Radio Interface, 简称为 CPRI) 标准协议。 CPRI协议规定了无线基站设备中的无线设 备控制器 (Radio Equipment Controller, 简称为 REC) 与无线设备 (Radio Equipment, 简称为 RE) 之间的接口标准。 图 1是根据相关技术的 REC和 RE互连示意图, 如图 1所示, 一个 REC可以连 接多个 RE, 每个 RE还可以连接其他 RE, 其中, RE之间的连接可以呈链状结构, 也 可以呈树状结构, 还可以呈环状结构。 以 CPRI为例, CPRI规定每个基本帧的周期是 1/3.84M, 由 1个控制字加 15个字 的 区域构成, 首先传输控制字部分。 每 256个基本帧构成 1个超帧, 150个超帧构 成 1个 10ms无线帧。 在一个超帧里面只有 256个控制字字段, 其中, 一部分控制字 字段已被协议占用, 因此可用的控制字字段少于 256。 随着通信产业的不断发展, 支持的业务类型以及业务数据量均不断增多, 对协议 的控制字部分需求也逐渐增多, 而协议控制字总数并未同步发展演进, 目前存在着以 下问题: 随着用户系统的不断发展, 对于控制字的需求不断增加, 用户所需的特定信 息也在不断增加, 协议控制字总数有限的情况下必将不能满足用户系统的发展。 针对相关技术中控制字有限而不能满足需要的问题, 目前尚未提出有效的解决方 案。 发明内容 本发明实施例提供了一种数据传输方法及装置, 以至少解决上述问题。 根据本发明实施例的一个方面, 提供了一种数据传输方法, 包括: 在 REC和 RE 之间传输数据时, 将所述 RE的扩展控制字设置在多个超帧中, 其中, 不同超帧中位 置相同的扩展控制字的含义不同; 向对端发送所述超帧。 优选地, 将所述 RE的扩展控制字设置在多个超帧中包括以下至少之一: 按照预 先约定, 将不同 RE的扩展控制字分别设置在不同的超帧中; 按照预先约定, 将一个 RE的扩展控制字设置在不同的超帧中。 优选地, 在所述 REC和所述 RE之间传输数据时, 将所述 RE的扩展控制字设置 在多个超帧中包括: 根据所述 RE所需要的扩展控制字个数及用于传输扩展控制字的 基本帧的个数, 确定用于传输扩展控制字的超帧个数, 其中, 超帧个数至少为两个; 将所述 RE的扩展控制字分别设置在所确定的多个超帧中。 优选地, 所述方法还包括: 所述 REC向所述 RE发送自检信令数据包; 所述 RE 根据所述自检信令数据包进行数据校验; 所述 REC接收到所述 RE反馈的对所述自检 信令数据包校验成功的响应消息之后, 确认所述 RE信令状态正常。 优选地,所述 RE根据所述自检信令数据包进行数据校验包括:所述 RE判断所述 自检信令数据包是否属于自身; 在确定所述自检信令数据包属于自身时, 根据所述自 检信令数据包进行数据校验, 否则, 将所述自检信令数据包转发给其他 RE 以供其他 RE进行数据校验; 在数据校验成功之后, 向所述 REC发送对所述自检信令数据包校 验成功的响应消息。 根据本发明实施例的另一个发面, 提供了一种数据传输装置, 位于 REC和 /或 RE 侧, 包括: 设置模块, 设置为在 REC和 RE之间传输数据时, 将所述 RE的扩展控制 字设置在多个超帧中, 其中, 不同超帧中位置相同的扩展控制字的含义不同; 发送模 块, 设置为向对端发送所述超帧。 优选地, 所述设置模块设置为以下至少之一: 按照预先约定, 将不同 RE的扩展 控制字分别设置在不同的超帧中; 按照预先约定, 将一个 RE的扩展控制字设置在不 同的超帧中。 优选地, 所述设置模块还设置为: 根据所述 RE所需要的扩展控制字个数及用于 传输扩展控制字的基本帧的个数, 确定用于传输扩展控制字的超帧个数, 其中, 超帧 个数至少为两个; 将所述 RE的扩展控制字分别设置在所确定的多个超帧中。 优选地, 所述装置还包括: 自检模块, 设置为在接收到所述 RE发送的自检响应 数据包的情况下, 根据所述自检响应数据包确认所述 RE信令状态正常, 其中, 所述 自检响应数据包是所述 RE根据所接收到的 REC自检信令数据包进行数据校验并在校 验成功后发送的。 优选地, 所述装置还包括: 自检模块, 设置为判断所接收到的 REC发送的自检信 令数据包是否属于当前 RE, 在确定所述自检信令数据包属于当前 RE的情况下, 根据 所述自检信令数据包进行数据校验, 否则, 将所述自检信令数据包转发给其他 RE 以 供其他 RE进行数据校验, 并在数据校验成功之后, 向所述 REC发送对所述自检信令 数据包校验成功的响应消息。 通过本发明实施例, 在无线设备控制器 REC和无线设备 RE之间传输数据时, 将 RE的扩展控制字设置在多个超帧中,其中,不同超帧中位置相同的扩展控制字的含义 不同, 并向对端发送超帧, 解决了控制字有限而不能满足需要的问题, 进而达到了增 加控制字的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中- 图 1是根据相关技术的 REC和 RE互连示意图; 图 2是根据本发明实施例的数据传输方法的流程图; 图 3是根据本发明实施例的数据传输装置的结构框图; 图 4是根据本发明优选实施例的数据传输方法的流程图之一; 图 4a是根据本发明实施例的 CPRI中控制字扩展方式的示意图; 图 5是根据本发明优选实施例的数据传输方法的流程图之二; 图 6是根据本发明优选实施例的信令在线自检下行处理方法的流程图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明实施例。 需要说明的是, 在不 冲突的情况下, 本申请中的实施例及实施例中的特征可以相互组合。 实施例一 本发明实施例提供了一种数据传输方法, 图 2是根据本发明实施例的数据传输方 法的流程图, 如图 2所示, 该流程包括如下步骤: 步骤 S202, 在 REC和 RE之间传输数据时, 将 RE的扩展控制字信息设置在多个 超帧中, 其中, 不同超帧中位置相同的扩展控制字信息的含义不同。 步骤 S204, 向对端发送超帧。 通过上述步骤, 将 RE的扩展控制字信息设置在多个超帧中, 其中, 不同超帧中 位置相同的扩展控制字信息的含义不同, 改变了相关技术中 RE的控制字信息在不同 超帧中位置相同含义即相同的做法, 即可以通过发送多个超帧而各个超帧中位置相同 的控制字含义并不相同, 从而可以解决控制字有限而不能满足需要的问题。 优选地, 设置扩展控制字的方式有很多中,本实施例提供了以下两种优选的方式: 可以按照预先约定, 将不同 RE的扩展控制字信息分别设置在不同的超帧中; 还可以 按照预先约定, 将一个 RE的扩展控制字信息设置在不同的超帧中。 优选地, 确定多个超帧进而设置控制字的方式有很多种, 比如, 根据所述 RE所 需要的扩展控制字个数及用于传输扩展控制字的基本帧的个数, 确定用于传输扩展控 制字的超帧个数, 其中, 超帧个数至少为两个, 然后将 RE所需要的扩展控制字分别 设置在所确定的多个超帧中。 采用这种方式, 可以保证在传输同样扩展控制字的前提 下使用的超帧数量最少。 当然, 在其他实施例中还可能采用其他确定超帧的方法。 如果可以将不同 RE的控制信息设置在不同的超帧中, 那么, REC还可以向 RE 发送自检信令数据包, RE根据该自检信令数据包进行数据校验,然后 REC接收到 RE 反馈的对自检信令数据包校验成功的响应消息之后, 确认所述 RE信令状态正常。 以 CPRI协议为例, 由于 CPRI协议控制字包含快速即以太网和慢速即高级数据链路控制 (High Level Data Link Control, 简称为 HDLC) 两种信令数据, 逻辑的功能只是底层 传输, 将对应信令数据传递给软件, 由软件检测该信令数据是否正确, 逻辑无法自己 确认传递数据的正确性。 一旦信令数据出现异常, 无法直观的区分出具体是软件处理 异常还是逻辑传递异常, 加大了此类故障的定位难度。 本优选实施例, 改变了相关技 术中由软件检测信令数据的做法,进而能直接确定异常是软件异常还是逻辑传递异常。 当然, 在其他实施例中也可不进行自检。 如果 REC进行了在线自检, 那么, RE判断自检信令数据包是否属于自身, 并在 确定该自检信令数据包属于自身时, 根据自检信令数据包进行数据校验, 否则, 将自 检信令数据包转发给其他 RE 以供其他 RE进行数据校验; 在数据校验成功之后, 向 REC发送对自检信令数据包校验成功的响应消息。 在这个实施例中, 是考虑到 RE接 收到的自检信令数据包可能是属于自身的也可能是属于其他 RE的, 在不同的情形下 需要进行不同的处理。 实施例二 在本实施例中还提供了数据传输装置, 该装置用于实现上述实施例及优选实施方 式, 已经进行过说明的不再赘述。 如以下所使用的, 术语 "模块"可以实现预定功能的 软件和 /或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件, 或者软件和硬件的组合的实现也是可能并被构想的。 图 3是根据本发明实施例的数据传输装置的结构框图, 如图 3所示, 该装置包括 设置模块 32、 发送模块 34, 下面对该结构进行说明: 设置模块 32, 在无线设备控制器 REC和无线设备 RE之间传输数据时, 将 RE的 扩展控制字信息设置在多个超帧中, 其中, 不同超帧中位置相同的扩展控制字信息的 含义不同; 发送模块 34, 设置为向对端发送所述超帧。 优选地, 设置模块 32设置为以下至少之一: 按照预先约定, 将不同 RE的扩展控 制字信息分别设置在不同的超帧中; 按照预先约定, 将一个 RE的扩展控制字信息设 置在不同的超帧中。 优选地, 设置模块 32还设置为: 根据 RE所需要的扩展控制字个数及用于传输扩 展控制字的基本帧的个数, 确定用于传输扩展控制字的超帧个数, 其中, 超帧个数至 少为两个; 将 RE所需要的扩展控制字分别设置在所确定的多个超帧中。 优选地, 该装置还包括自检模块 34, 设置为在接收到 RE发送的自检响应数据包 的情况下, 根据自检响应数据包确认 RE信令状态正常, 其中, 自检响应数据包是 RE 根据所接收到的 REC自检信令数据包进行数据校验并在校验成功后发送的。 优选地, 自检模块 34设置为在确定所接收到的 REC发送的自检信令数据包属于 当前 RE的情况下, 根据自检信令数据包进行数据校验, 否则, 将自检信令数据包转 发给其他 RE以供其他 RE进行数据校验, 并在数据校验成功之后, 向 REC发送对所 述自检信令数据包校验成功的响应消息。 实施例三 本实施例假定一个 REC同时链接 3个 RE (RE1\RE2\RE3 ), 各 RE采用的是链形 拓扑结构, 每个 RE端下行均需要扩展 X个扩展控制字, 一个基本帧只传递一个固定 的控制字。 图 4是根据本发明优选实施例的数据传输方法的流程图之一, 如图 4所示, 该流 程包括如下步骤: 步骤 S402, 确定超帧数目。
REC下发 数据到 RE端时首先需要确定所需超帧的数量。 图 4a是根据本发明 实施例的 CPRI中控制字扩展方式的示意图,如图 4a所示,在 M个超帧中使用其中 X 个基本帧传输 A个不同 RE的扩展控制字,具体地说,在 256个基本帧中选择 X(X>=1 ) 个基本帧用于扩展 X个扩展控制字, 根据 X的具体值从 150个超帧中确定 M个超帧 用于传输各 RE的扩展控制字。在本实施例中,假定每个 RE需要两个超帧才可以完成 下行扩展, 则三个 RE共需要 6个超帧, 即 M=6。 步骤 S404, 建立各 RE和各超帧之间的对应关系。 下行 REC在 M (M=6)个超帧中分别设置不同 RE的扩展控制字。 可以根据预先 约定, 在第 0\1号超帧中设置 RE1的 X个扩展控制字, 在第 2\3号超帧中设置 RE2的 X个扩展控制字, 在第 4\5号超帧中设置 RE3的 X个扩展控制字, 也就是说, X个基 本帧按照预先约定在不同超帧中传输不同 RE的具体扩展控制字。 步骤 S406, REC向 RE发送超帧。
REC向 RE发送 M (M=6) 个超帧。 在 REC发送完 M个超帧即发送完所有 RE 的扩展控制字后, 可以再次按照超帧号循环发送扩展控制字给 RE。 步骤 S408, RE解析控制字。 下行所有 RE均根据超帧号对不同超帧中的 X个基本帧进行解析。 RE1接收到超 帧后, 判断超帧是否是第 0\1号超帧, 如果是, 则解析出对应的扩展控制字, RE2和 RE3对此超帧不做处理, 否则, 将超帧传递给 RE2, RE2判断所接收到的超帧是否是 第 2\3号超帧, 如果是, 解析出对应的扩展控制字, 否则将超帧传递给 RE3。 RE3的 处理过程同上, 此处不再赘述。 通过上述技术方案, 可以实现 CPRI协议的控制字扩展, 这种协议控制字扩展方 法可以在其他类似协议中使用。 实施例四 本实施例假定一个 REC同时链接 3个 RE (RE1\RE2\RE3 ), 各 RE采用的是链形 拓扑结构, 每个 RE上行均需要扩展 Y个扩展控制字, 一个基本帧只传递一个固定的 控制字。 图 5是根据本发明优选实施例的数据传输方法的流程图之二, 如图 5所示, 该流 程包括如下步骤: 步骤 S502, 确定超帧数目。 上行 RE端发送 数据到 REC端时, 取 Y个基本帧用于扩展 Y个扩展控制字, 根据 Y的具体值确定所需超帧数量, 本实施例中, 假定每个 RE需要两个超帧才可以 完成上行扩展, 则三个 RE共需要 6 (M=6) 个超帧。 步骤 S504, 建立各 RE和各超帧之间的对应关系。 上行 RE3在第 0\1号超帧时将 Y个扩展控制字传递给 RE2; RE2将 RE3的扩展 控制字保存下来, 然后在第 0\1号超帧将自身的 Y个扩展控制字传递给 RE1, 并在第 2\3号超帧将 RE3的扩展控制字传递给 RE1 ; RE1端在第 0\1、 2\3、 4\5号超帧分别设 置 RE1、 RE2、 RE3 的扩展控制字。 也就是说, 将上行所有 RE对应的扩展控制字信 息分别放在不同的超帧中, 即一个超帧中包含的数据分别是一个对应 RE的专用扩展 控制字。 步骤 S506, RE向 REC发送超帧。
RE1将分别设置 RE1、 RE2、 RE3的扩展控制字的第 0\1、 2\3、 4\5号超帧发送给 REC。 所有 RE均发送完扩展控制字后, RE再次按照超帧号继续发送各自的扩展控制 字, 如此循环。 步骤 S508, REC解析控制字。
REC根据超帧号分别解析处理。 在超帧号是 0\1时, 解析出 RE1的扩展控制字; 在超帧号是 2\3时, 解析出 RE2的扩展控制字; 在超帧号是 4\5时, 解析出 RE3的扩 展控制字。 通过上述技术方案, 可以实现 CPRI协议的扩展控制字扩展, 这种协议扩展控制 字扩展方法可以在其他类似协议中使用。 实施例五 本实施例假定一个 REC同时链接 3个 RE (RE1\RE2\RE3 ), 各 RE采用的是链形 拓扑结构。 图 6是根据本发明优选实施例的信令在线自检下行处理方法的流程图, 如图 6所 示, 该流程包括如下步骤: 步骤 S602, REC定时发起校验。
REC定时发起校验, 下行发送自检信令数据包, 该自检信令数据包是自设定的一 种特殊数据包格式的数据包。 REC—次校验一个 RE的信令状态。 步骤 S604, REl判断是否是自身的自检信令数据包。 RE1收到自检信令数据包后, 判断该自检信令数据包是不是属于自身。 如果是, 执行步骤 S608, 否则执行步骤 S606。 步骤 S606, 转发该自检信令数据包。
RE1将自检自信令数据包转发给 RE2, 执行步骤 S612。 步骤 S608, 发送自检响应数据包到 REC。 REl判断该自检信令数据包的内容是否正确, 如果正确, 则发送自检响应数据包 到 REC。 REC收到正确的自检响应数据包后, 即认为 RE1的信令状态正常。 步骤 S610, REl截取该自检信令数据包。
RE1截取该自检信令数据包, 使其不发送到 RE2和 RE3, 结束本流程。 步骤 S612, RE2判断是否为自身自检信令数据包。 RE2判断是否为自身的自检信令数据包, 如果是, 执行步骤 S614, 否则将自检信 令数据包转发给 RE3, RE3的处理流程与 RE2类似, 此处不再赘述。 步骤 S614, 发送自检响应数据包到 REC。 在判断自检信令数据包内容正确后, 发送一个自检响应数据包经 RE1 转发到 REC。 REC收到正确的自检响应数据包后, 即认为 RE2的信令状态正常。 步骤 S616, 截取自检信令数据包。
RE2截取自检信令数据包, 使其不发送到 RE3。 通过上述技术方案, 可以实现 CPRI协议信令在线自检测, 这种自检方法可以在 其他类似协议中使用。 从以上的描述中, 可以看出, 本发明实施例实现了如下技术效果: 使得协议支持 更多的控制字, 并且能够实现协议控制字的自检测。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于此处 的顺序执行所示出或描述的步骤, 或者将它们分别制作成各个集成电路模块, 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任 何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种数据传输方法, 包括:
在无线设备控制器 REC和无线设备 RE之间传输数据时, 将所述 RE的扩 展控制字设置在多个超帧中, 其中, 不同超帧中位置相同的扩展控制字的含义 不同;
向对端发送所述超帧。
2. 根据权利要求 1所述的方法, 其中, 将所述 RE的扩展控制字设置在多个超帧 中包括以下至少之一:
按照预先约定, 将不同 RE的扩展控制字分别设置在不同的超帧中; 按照预先约定, 将一个 RE的扩展控制字设置在不同的超帧中。
3. 根据权利要求 1或 2所述的方法, 其中, 在所述 REC和所述 RE之间传输数据 时, 将所述 RE的扩展控制字设置在多个超帧中包括:
根据所述 RE所需要的扩展控制字个数及用于传输扩展控制字的基本帧的 个数, 确定用于传输扩展控制字的超帧个数, 其中, 超帧个数至少为两个; 将所述 RE的扩展控制字分别设置在所确定的多个超帧中。
4. 根据权利要求 1至 3任一项所述的方法, 其中, 所述方法还包括:
所述 REC向所述 RE发送自检信令数据包;
所述 RE根据所述自检信令数据包进行数据校验;
所述 REC接收到所述 RE反馈的对所述自检信令数据包校验成功的响应消 息之后, 确认所述 RE信令状态正常。
5. 根据权利要求 4所述的方法, 其中, 所述 RE根据所述自检信令数据包进行数 据校验包括:
所述 RE判断所述自检信令数据包是否属于自身;
在确定所述自检信令数据包属于自身时, 根据所述自检信令数据包进行数 据校验, 否则, 将所述自检信令数据包转发给其他 RE以供其他 RE进行数据 校验; 在数据校验成功之后,向所述 REC发送对所述自检信令数据包校验成功的 响应消息。 一种数据传输装置, 位于 REC和 /或 RE侧, 包括:
设置模块,设置为在无线设备控制器 REC和无线设备 RE之间传输数据时, 将所述 RE的扩展控制字设置在多个超帧中, 其中, 不同超帧中位置相同的扩 展控制字的含义不同;
发送模块, 设置为向对端发送所述超帧。 根据权利要求 6所述的装置, 其中, 所述设置模块设置为以下至少之一:
按照预先约定, 将不同 RE的扩展控制字分别设置在不同的超帧中; 按照预先约定, 将一个 RE的扩展控制字设置在不同的超帧中。 根据权利要求 6或 7所述的装置, 其中, 所述设置模块还设置为:
根据所述 RE所需要的扩展控制字个数及用于传输扩展控制字的基本帧的 个数, 确定用于传输扩展控制字的超帧个数, 其中, 超帧个数至少为两个; 将所述 RE的扩展控制字分别设置在所确定的多个超帧中。 根据权利要求 6至 8任一项所述的装置, 其中, 所述装置还包括:
自检模块, 设置为在接收到所述 RE发送的自检响应数据包的情况下, 根 据所述自检响应数据包确认所述 RE信令状态正常, 其中, 所述自检响应数据 包是所述 RE根据所接收到的 REC自检信令数据包进行数据校验并在校验成功 后发送的。 根据权利要求 6至 8任一项所述的装置, 其中, 所述装置还包括:
自检模块,设置为判断所接收到的 REC发送的自检信令数据包是否属于当 前 RE, 在确定所述自检信令数据包属于当前 RE的情况下, 根据所述自检信令 数据包进行数据校验, 否则, 将所述自检信令数据包转发给其他 RE以供其他 RE进行数据校验, 并在数据校验成功之后, 向所述 REC发送对所述自检信令 数据包校验成功的响应消息。
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