WO2014005509A1 - 一种数据发送、接收方法及发送、接收装置 - Google Patents

一种数据发送、接收方法及发送、接收装置 Download PDF

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Publication number
WO2014005509A1
WO2014005509A1 PCT/CN2013/078664 CN2013078664W WO2014005509A1 WO 2014005509 A1 WO2014005509 A1 WO 2014005509A1 CN 2013078664 W CN2013078664 W CN 2013078664W WO 2014005509 A1 WO2014005509 A1 WO 2014005509A1
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data
basic frame
pon
mapped
unit
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PCT/CN2013/078664
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English (en)
French (fr)
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周健
罗彤
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华为技术有限公司
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Priority to JP2015518820A priority Critical patent/JP5928931B2/ja
Publication of WO2014005509A1 publication Critical patent/WO2014005509A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25Arrangements specific to fibre transmission
    • H04B10/2575Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752Optical arrangements for wireless networks
    • H04B10/25753Distribution optical network, e.g. between a base station and a plurality of remote units
    • H04B10/25754Star network topology
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27Arrangements for networking
    • H04B10/272Star-type networks or tree-type networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0067Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0278WDM optical network architectures
    • H04J14/0282WDM tree architectures

Definitions

  • the present invention claims to be submitted to the Chinese Patent Office on July 2, 2012, the application number is 201210224888.8, and the invention name is "a data transmission, receiving method, and transmitting and receiving device".
  • Priority of Chinese Patent Application the entire contents of which is incorporated herein by reference.
  • TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a data transmitting and receiving method, and a transmitting and receiving device.
  • a Common Public Radio Interface (CPRI) or an open base station is used between a Base Band Unit (BBU) and a Radio Remote Unit (RRU).
  • the interface protocol of the Open Base Station Architecture Initiative (OBSAI) is used for data transmission through optical fibers to realize the remote extension of the distributed base station.
  • the above structure has been widely deployed.
  • the base station acts as an optical network unit (ONU), and then converges through an optical fiber to an optical line terminal (OLT).
  • the OLT moves down to the core network, and the physical location of the ONU and the OLT is deployed closer to the location of the RRU and the BBU in the distributed base station architecture. Therefore, in order to save fiber resources, the prior art will access the fiber of the network. Resources are used to extend the fiber of distributed base stations.
  • An object of the embodiments of the present invention is to provide a PON data transmission method, which aims to solve the problem that the optical fiber resources of the access network are used for the optical fiber remote access of the distributed base station, and the OTN device is used to cause the system. The problem of high construction costs.
  • a data sending method includes:
  • Another object of the present invention is to provide a data receiving method, including: receiving a basic frame in which orthogonal/in-phase I/Q data and passive optical network PON data are mapped according to a preset mapping rule. ;
  • Another object of the present invention is to provide a data transmitting apparatus, including: a first acquiring unit, configured to acquire a BBU or a radio frequency processing unit from a baseband processing unit
  • a second acquiring unit configured to acquire passive optical network PON data from the optical line terminal OLT or the optical network node ONU;
  • mapping unit configured to send the I/Q data acquired by the first acquiring unit and the second obtained first sending unit, to send the basic frame after mapping by the mapping unit.
  • Another object of the present invention is to provide a data receiving apparatus, including: a receiving unit, configured to receive a basic frame, where orthogonal/in-phase I/Q data and none are mapped according to a preset mapping rule in the basic frame.
  • a separating unit configured to separate the I/Q data and the PON data from the basic frame received by the receiving unit according to the mapping rule
  • a second sending unit configured to send the I/Q data separated by the separating unit to a baseband processing unit BBU or a radio frequency processing unit RRU;
  • a third sending unit configured to send the PON data separated by the separating unit to the optical line terminal OLT or the optical network node ONU.
  • the PON data and the I/Q data are shared without increasing the OTN device.
  • the fiber is transmitted, which effectively reduces the construction cost of the system.
  • FIG. 1 is a flowchart of an implementation of a data sending method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a mapped basic frame according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of an implementation of a data receiving method according to an embodiment of the present invention.
  • FIG. 4 is a structural block diagram of a data transmitting apparatus according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a data receiving apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of implementation of a data transmitting apparatus and a data receiving apparatus according to an embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention. Rather than all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.
  • the PON data and the I/Q data are shared without increasing the OTN device.
  • the fiber is transmitted, which effectively reduces the construction cost of the system.
  • FIG. 1 shows an implementation flow of a data sending method according to an embodiment of the present invention, which is described in detail as follows:
  • step S101 I/Q data from an RRU or a BBU is acquired.
  • the I/Q data may be from the RRU or the BBU, and the antenna data from the RRU or the BBU is photoelectrically converted, converted into an electrical signal by the optical signal, and then input to the serializer/deserializer (Serdes).
  • Serdes serializer/deserializer
  • the clock recovery and data collection are performed, and then channel alignment, synchronization processing, and pseudo-random code detection are performed according to the CPRI or OBSAI protocol.
  • step S102 PON data from the ONU or the OLT is acquired.
  • the PON data may be from the ONU or the OLT, and may be converted into an electrical signal by photoelectric conversion, and then input to Serdes for clock recovery and data collection.
  • step S103 the I/Q data and the PON data are mapped into the basic frame according to a preset mapping rule.
  • the basic frame when the RRU and the BBU communicate through the CPRI interface, the basic frame may be a CPRI basic frame; similarly, when the RRU and the BBU communicate through the OBSAI interface, the basic frame may be an OBSAI basic frame.
  • mapping is performed in the basic frame according to a preset mapping relationship, and the mapped basic frame is generated, thereby inserting the PON data into the basic frame, and the I/Q data complex Use the same basic frame.
  • mapping rule for a preset mapping rule, a flexible selection may be made according to actual conditions:
  • the default mapping rule can be:
  • the I/Q data is mapped from left to right in the basic frame, and the PON data is mapped from right to left in the basic frame.
  • the preset mapping rule can be:
  • the I/Q data is mapped from right to left in the basic frame, and the PON data is mapped from left to right in the basic frame.
  • the preset mapping rule can be:
  • the I/Q data is mapped from left to right in the basic frame, and the preset position of the PON data in the basic frame is mapped from left to right.
  • the preset position is determined according to the number of bits of the I/Q data and the PON data to determine that the I/Q data and the PON data mapped in the basic frame do not overlap and can be completely mapped in the basic frame. .
  • the preset mapping rule can be:
  • the preset position is determined in the basic frame according to the bit number of the PON data and the I/Q data, and the PON data is mapped from the preset position from right to left in the basic frame, and the I/Q data is preset in the basic frame.
  • the location is mapped from left to right, wherein the determination of the preset location needs to ensure that both I/Q data and PON data can be completely mapped in the basic frame.
  • mapping rules are only a few examples of the preset mapping rules, and is not intended to limit the present invention. Based on the same principle, the above-mentioned "left-right” mapping rule can also be changed to the "up-down” mapping rule, and will not be described here.
  • the boundary indication of the mapped I/Q data and the PON data not overlapping may be determined in the basic frame according to the size of the I/Q data and the size of the PON data. In order to facilitate the receiver to separate the I/Q data and the PON data from the basic post after receiving the basic frame.
  • step S104 a basic frame is transmitted.
  • the CPRI or OBSAI can be used.
  • the protocol processes the basic frame through electro-optical conversion, converts the electrical signal into an optical signal, and then inputs it to the optical fiber for transmission to the ONU/OLT and the BBU/RRIL.
  • the PON data from the access network is inserted into the basic frame transmitted between the BBU and the RRU through a certain mapping rule, thereby implementing PON data and I/Q without increasing the OTN device.
  • Data is shared by one fiber for transmission, which effectively reduces the construction cost of the system.
  • FIG. 3 is a flowchart of an implementation of a data receiving method according to an embodiment of the present invention.
  • a mapped basic frame generated by the data sending method according to the embodiment of FIG. 1 is transmitted to a pair through an optical fiber.
  • the PON data and the I/Q data in the basic frame are separated by the mapping rule used in the generation of the basic frame, so that the separated data is respectively transmitted to the corresponding interface to implement data reception.
  • the specific implementation process is detailed as follows:
  • step S301 a basic frame is received, in which I/Q data and PON data are mapped according to a preset mapping rule.
  • a basic frame transmitted from the optical fiber is received, in which I/Q data and PON data are mapped in accordance with a preset mapping rule.
  • the basic frame after receiving the basic frame transmitted by the optical fiber, the basic frame needs to be photoelectrically converted, converted into an electrical signal by the optical signal, and then input to Serdes for clock recovery and data collection, and then channel alignment and synchronization are performed. After processing and pseudo-random code detection, the basic frame is received and processed according to the CPRI or OBSAI protocol.
  • step S302 I/Q data and PON data are separated from the basic frame according to a preset mapping rule.
  • the basic frame is generated according to the mapping rule shown in FIG. 2, when the I/Q data and the PON data are separated from the basic frame, the basic frame data is extracted from left to right until the I/Q data is separated, from the right. The basic frame data is extracted to the left until the PON data is separated.
  • the basic frame is generated by mapping the I/Q data from left to right in the basic frame, and mapping rules for mapping the PON data from the left to the right in the preset position in the basic frame
  • I/Q data is extracted from left to right in the basic frame
  • PON data is extracted from left to right from the preset position of the basic frame.
  • the preset mapping rule is: determining a preset position in the basic frame according to the bit number of the PON data and the I/Q data, and mapping the PON data from the preset position from right to left in the basic frame, and When the /Q data is mapped from the left to the right by the preset position in the basic frame, the I/Q data is extracted from the preset position in the basic frame from left to right, from the preset position in the basic frame from the right to the right. The PON data is extracted left.
  • step S303 the I/Q data is transmitted to the BBU or the RRU.
  • step S304 the PON data is transmitted to the OLT or the ONU.
  • the separated I/Q data is sent to the BBU or the RRU, and the separated PON data is sent to the OLT or the ONU, thereby realizing the reception of the I/Q data and the PON data.
  • the multiplexed basic frame is demultiplexed, the I/Q data and the PON data are separated, and the separated I/Q data is transmitted to the corresponding CPRI/OBSAI interface for transmission to
  • the BBU or the RRU transmits the separated PON data to the corresponding PON interface for transmission to the ONU or the OLT, thereby realizing simultaneous transmission of PON data and I/Q data by using one optical fiber, thereby effectively reducing the construction cost of the wireless network.
  • FIG. 4 is a block diagram showing the structure of a data transmitting apparatus according to an embodiment of the present invention. For convenience of explanation, only parts related to the present embodiment are shown.
  • the data transmitting apparatus includes:
  • the first obtaining unit 41 acquires I/Q data from the RRU or the BBU.
  • the second obtaining unit 42 acquires PON data from the ONU or the OLT.
  • the mapping unit 43 maps the I/Q data acquired by the first obtaining unit 41 and the PON data acquired by the second obtaining unit 42 to the basic frame according to a preset mapping rule;
  • the first transmitting unit 44 transmits the mapped basic frame by the mapping unit 43.
  • the basic frame includes a general public radio interface CPRI basic frame or an open base station architecture OBSAI basic frame.
  • the mapping unit 43 is specifically configured to:
  • the I/Q data is mapped from right to left in the basic frame.
  • FIG. 5 is a structural block diagram of a data receiving apparatus according to an embodiment of the present invention. For convenience of description, only parts related to the present embodiment are shown.
  • the data receiving apparatus includes:
  • the receiving unit 51 receives a basic frame in which I/Q data and PON data are mapped according to a preset mapping rule.
  • the separating unit 52 separates the I/Q data and the PON data from the basic frame received by the receiving unit 51 according to the mapping rule.
  • the second transmitting unit 53 transmits the I/Q data separated by the separating unit 52 to the base BBU or the RRU.
  • the third transmitting unit 54 transmits the PON data separated by the separating unit 52 to the OLT or the ONU.
  • the basic frame includes a CPRI basic frame or an OBSAI basic frame.
  • the data transmitting apparatus and the data receiving apparatus may be located in the BBU and the RRU to perform basic frame transmission and reception, respectively, to implement transmission of I/Q data and PON data.
  • the above data transmitting device and the data receiving device can be implemented by one entity, an implementation manner is shown in FIG. 6 , wherein one way of the solid line part is to perform I/Q data respectively through photoelectric conversion, serializer, channel alignment, After synchronous processing, pseudo-random code detection, and CPRI or OBSAI protocol processing, the PON data that has undergone photoelectric conversion and serializer is mapped to the basic frame together with the data transmitting device for transmission; the dotted line portion is received from the optical fiber after mapping.
  • the basic frame After the basic frame, the basic frame is subjected to photoelectric conversion, serializer, channel alignment, synchronization processing, pseudo random code detection, and CPRI or OBSAI protocol, and is preset in the data receiving device.
  • the mapping rule separates the PON data and the I/Q data and sends them to the corresponding PON interface and CPRI/OBSAI interface respectively.
  • the PON data and the I/Q data are shared without increasing the OTN device.
  • the fiber is transmitted, which effectively reduces the construction cost of the system.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

本发明属于通信领域,尤其涉及一种数据发送、接收方法及发送、接收装置,所述数据发送方法包括:获取来自基带处理单元BBU或者射频处理单元RRU的正交/同相I/Q数据;获取来自光线路终端OLT或者光网络节点ONU的无源光网络PON数据;将所述I/Q数据和所述PON数据按照预设的映射规则映射至基本帧中;发送所述基本帧。在本发明中,通过将来自接入网的PON数据插入到BBU与RRU之间传输的基本帧中,从而在不增加OTN设备的前提下,实现PON数据与I/Q数据共用一根光纤进行发送,有效降低了系统的建设成本。

Description

一种数据发送、 接收方法及发送、 接收装置 本申请要求于 2012 年 07 月 02 日提交中国专利局、 申请号为 201210224888.8、 发明名称为"一种数据发送、 接收方法及发送、 接收装置" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明属于通信领域, 尤其涉及一种数据发送、 接收方法及发送、 接 收装置。
背景技术 在分布式基站结构中, 基带处理单元(Base Band Unit, BBU )和射频 处理单元( Radio Remote Unit, RRU )之间釆用通用公共无线接口( Common Public Radio Interface , CPRI ) 或者开放式基站架构 (Open Base Station Architecture Initiative, OBSAI )的接口协议, 通过光纤进行数据传输, 以实 现分布式基站的光纤拉远, 上述结构已得到了大量部署。 而目前在接入网 的无源光网络 ( Passive Optical Network, PON )应用中, 基站作为光网络 节点(Optical Network Unit, ONU ) , 经过光纤汇聚到光线路终端(Optical Line Terminal, OLT )后再进入核心网, 其 OLT下移的趋势使得 ONU与 OLT的物理位置部署越来越接近分布式基站架构中 RRU与 BBU的位置部 署, 因此, 为了节约光纤资源, 现有技术将接入网的光纤资源用于分布式 基站的光纤拉远。
然而, 上述方案需要通过光传送网 (Optical Transport Network, OTN ) 设备将多路 PON信号或者 BBU和 RRU之间的同相和正交(Inphase and Quadrature, I/Q )信号进行波分复用后在同一根光纤中进行传输, OTN设 备的使用导致系统建设成本大大增加。 发明内容 本发明实施例的目的在于提供一种 PON数据发送方法, 旨在解决现有 技术将接入网的光纤资源用于分布式基站的光纤拉远的方案中, 釆用了 OTN设备导致系统建设成本高的问题。
本发明实施例是这样实现的, 一种数据发送方法, 包括:
获取来自基带处理单元 BBU或者射频处理单元 RRU的正交 /同相 I/Q 数据;
获取来自光线路终端 OLT或者光网络节点 ONU的无源光网络 PON数 据;
将所述 I/Q数据和所述 PON数据按照预设的映射规则映射至基本帧中; 发送所述基本帧。
本发明实施例的另一目的在于提供一种数据接收方法, 包括: 接收基本帧, 所述基本帧中按照预设的映射规则映射了正交 /同相 I/Q 数据和无源光网络 PON数据;
根据所述映射规则, 从所述基本帧中分离出所述 I/Q数据和所述 PON 数据;
将所述 I/Q数据发送至基带处理单元 BBU或者射频处理单元 RRU; 将所述 PON数据发送至光线路终端 OLT或者光网络节点 ONU。
本发明实施例的另一目的在于提供一种数据发送装置, 包括: 第一获取单元, 用于获取来自基带处理单元 BBU或者射频处理单元
RRU的正交 /同相 I/Q数据;
第二获取单元, 用于获取来自光线路终端 OLT或者光网络节点 ONU 的无源光网络 PON数据;
映射单元,用于将所述第一获取单元获取的所述 I/Q数据和所述第二获 第一发送单元, 用于发送所述映射单元映射后的所述基本帧。 本发明实施例的另一目的在于提供一种数据接收装置, 包括: 接收单元, 用于接收基本帧, 所述基本帧中按照预设的映射规则映射 了正交 /同相 I/Q数据和无源光网络 PON数据;
分离单元, 用于根据所述映射规则, 从所述接收单元接收的所述基本 帧中分离出所述 I/Q数据和所述 PON数据;
第二发送单元,用于将所述分离单元分离出的所述 I/Q数据发送至基带 处理单元 BBU或者射频处理单元 RRU;
第三发送单元, 用于将所述分离单元分离出的所述 PON数据发送至光 线路终端 OLT或者光网络节点 ONU。
在本发明实施例中,通过将来自接入网的 PON数据插入到 BBU与 RRU 之间传输的基本帧中, 从而在不增加 OTN设备的前提下, 实现 PON数据 与 I/Q数据共用一根光纤进行发送, 有效降低了系统的建设成本。
附图说明 图 1是本发明实施例提供的数据发送方法的实现流程图;
图 2是本发明实施例提供的映射后的基本帧的示意图;
图 3是本发明实施例提供的数据接收方法的实现流程图;
图 4是本发明实施例提供的数据发送装置的结构框图;
图 5是本发明实施例提供的数据接收装置的结构框图;
图 6是本发明实施例提供的数据发送装置和数据接收装置的实现示意 图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述, 显然, 所描述的实施例是本发明的一部分实施例, 而不是全部实施例。 基于本发明中的实施例, 本领域普通技术人员在没有 做出创造性劳动的前提下所获得的所有其他实施例, 都应属于本发明保护 的范围。
在本发明实施例中,通过将来自接入网的 PON数据插入到 BBU与 RRU 之间传输的基本帧中, 从而在不增加 OTN设备的前提下, 实现 PON数据 与 I/Q数据共用一根光纤进行发送, 有效降低了系统的建设成本。
图 1示出了本发明实施例提供的数据发送方法的实现流程, 详述如下: 在步骤 S101中, 获取来自 RRU或者 BBU的 I/Q数据。
在本实施例中, I/Q数据可以来自 RRU或者 BBU, 通过将来自 RRU 或者 BBU的天线数据经过光电转换, 由光信号转换为电信号后输入到串行 器 /解串器 (Serdes )进行时钟恢复和数据釆集, 然后进行通道对齐、 同步 处理及伪随机码检测后按照 CPRI或者 OBSAI协议规定进行处理得到。
在步骤 S102中, 获取来自 ONU或者 OLT的 PON数据。
在本实施例中, PON数据可以来自 ONU或者 OLT, 可以通过将其经 过光电转换, 由光信号转换为电信号后输入到 Serdes进行时钟恢复和数据 釆集得到。
在步骤 S103中,将 I/Q数据和 PON数据按照预设的映射规则映射至基 本帧中。
在本实施例中 , 当 RRU和 BBU通过 CPRI接口进行通信时 ,该基本帧 可以为 CPRI基本帧; 同样地, 当 RRU和 BBU通过 OBSAI接口进行通信 时, 该基本帧可以为 OBSAI基本帧。
对于经过处理后的 I/Q数据和 PON数据, 按照预设的映射关系在基本 帧中进行映射, 生成映射后的基本帧, 从而实现将 PON数据插入到基本帧 中, 和 I/Q数据复用同一个基本帧。
在本实施例中, 对于预设的映射规则, 可以根据实际情况进行灵活选 择: 例如, 预设的映射规则可以为:
将 I/Q数据在基本帧中从左至右进行映射, 将 PON数据在基本帧中从 右至左进行映射。
在上述映射规则下, 映射完成的基本帧的结构如图 2所示。
又例如, 预设的映射规则可以为:
将 I/Q数据在基本帧中从右向左进行映射, 将 PON数据在基本帧中从 左向右进行映射。
又例如, 预设的映射规则可以为:
将 I/Q数据在基本帧中从左至右进行映射, 将 PON数据在基本帧中的 预设位置从左往右进行映射。 其中, 预设位置根据 I/Q数据和 PON数据的 比特(bit )数来确定, 以确定映射在基本帧中的 I/Q数据和 PON数据不交 叠且均能够完整地映射在基本帧中。
又例如, 预设的映射规则可以为:
根据 PON数据和 I/Q数据的 bit数在基本帧中确定预设位置, 将 PON 数据在基本帧中由预设位置从右至左进行映射,将 I/Q数据在基本帧中由预 设位置从左往右进行映射, 其中, 该预设位置的确定需要保证 I/Q数据和 PON数据均能够完整地映射在基本帧中。
上述仅为对预设的映射规则的几种举例说明, 不用于限定本发明。 基 于相同的原理, 还可以将上述 "左 -右" 的映射规则变更为 "上 -下" 的 映射规则, 在此不赘述。
进一步地, 当确定了预设的映射规则后,还可以根据 I/Q数据的大小及 PON数据的大小, 在基本帧中确定映射后的 I/Q数据和 PON数据互不重叠 的边界指示,以方便接收方在接收到基本帧后从基本帖中分离出 I/Q数据和 PON数据。
在步骤 S104中, 发送基本帧。
在本实施例中, 当得到映射后的基本帧,即可以按照 CPRI或者 OBSAI 协议进行处理, 将基本帧经过电光转换, 由电信号转换为光信号后, 输入 至光纤进行发送, 以分别传输至 ONU/OLT和 BBU/RRIL
在本发明实施例中, 通过一定的映射规则将来自接入网的 PON数据插 入到 BBU与 RRU之间传输的基本帧中 ,从而在不增加 OTN设备的前提下 , 实现 PON数据与 I/Q数据共用一根光纤进行发送, 有效降低了系统的建设 成本。
图 3 示出了本发明实施例提供的数据接收方法的实现流程, 在本实施 例中, 对于根据图 1 实施例所述的数据发送方法生成的映射后的基本帧, 在通过光纤传输至对端设备后, 通过该基本帧在生成时所釆用的映射规则, 分离出基本帧中的 PON数据和 I/Q数据, 以将分离的数据分别传送至相应 的接口中, 实现数据的接收。 其具体实现流程详述如下:
在步骤 S301中, 接收基本帧, 该基本帧中按照预设的映射规则映射了 I/Q数据和 PON数据。
在本实施例中, 接收来自光纤传输的基本帧, 在该基本帧中, 按照预 设的映射规则映射了 I/Q数据和 PON数据。
在本实施例中, 当接收到光纤传输的基本帧之后, 需要对该基本帧进 行光电转换, 由光信号转换为电信号后输入到 Serdes进行时钟恢复和数据 釆集, 然后进行通道对齐、 同步处理及伪随机码检测后, 将该基本帧按照 CPRI或者 OBSAI协议进行接收处理。
在步骤 S302中, 根据预设的映射规则, 从基本帧中分离出 I/Q数据和 PON数据。
例如, 基本帧按照图 2 所示的映射规则生成, 则在从基本帧中分离出 I/Q数据和 PON数据时, 从左至右提取该基本帧数据直至分离出 I/Q数据, 从右至左提取该基本帧数据直至分离出 PON数据。
又例如, 当基本帧按照将 I/Q数据在基本帧中从左至右进行映射, 将 PON数据在基本帧中的预设位置从左往右进行映射的映射规则生成, 则从 基本帧中从左至右提取出 I/Q数据,再从基本帧的预设位置中从左至右提取 出 PON数据。
又例如,预设的映射规则为:根据 PON数据和 I/Q数据的 bit数在基本 帧中确定预设位置,将 PON数据在基本帧中由预设位置从右至左进行映射, 将 I/Q数据在基本帧中由预设位置从左往右进行映射时,则从基本帧中的预 设位置从左至右提取出 I/Q数据, 从基本帧中的预设位置从右至左提取出 PON数据。
在步骤 S303中, 将 I/Q数据发送至 BBU或者 RRU。
在步骤 S304中, 将 PON数据发送至 OLT或者 ONU。
在本实施例中, 将分离出的 I/Q数据发送至 BBU或者 RRU, 将分离出 的 PON数据发送至 OLT或者 ONU,从而实现 I/Q数据及 PON数据的接收。
在本实施例中,对复用的基本帧进行解复用,分离出其中的 I/Q数据和 PON数据, 并将分离出的 I/Q数据传送至相应的 CPRI/OBSAI接口, 以传 输给 BBU或者 RRU;将分离出的 PON数据传送至相应的 PON接口, 以传 输给 ONU或者 OLT, 从而实现利用一根光纤对 PON数据和 I/Q数据的同 时传输, 有效降低了无线网络的建设成本。
图 4示出了本发明实施例提供的数据发送装置的结构框图, 为了便于 说明, 仅示出了与本实施例相关的部分。
参照图 4 , 该数据发送装置包括:
第一获取单元 41 , 获取来自 RRU或者 BBU的 I/Q数据。
第二获取单元 42, 获取来自 ONU或者 OLT的 PON数据。
映射单元 43 , 将第一获取单元 41获取的 I/Q数据和第二获取单元 42 获取的 PON数据按照预设的映射规则映射至基本帧中;
第一发送单元 44 , 发送映射单元 43映射后的基本帧。
其中,该基本帧包括通用公共无线接口 CPRI基本帧或者开放式基站架 构 OBSAI基本帧。 可选地, 映射单元 43具体用于:
将 I/Q数据在基本帧中从左至右进行映射;
将 PON数据在基本帧中从右至左进行映射; 或者
将 PON数据在基本帧中从左至右进行映射;
将 I/Q数据在基本帧中从右至左进行映射。
图 5 示出了本发明实施例提供的数据接收装置的结构框图, 为了便于 说明, 仅示出了与本实施例相关的部分。
参照图 5, 该数据接收装置包括:
接收单元 51 ,接收基本帧,该基本帧中按照预设的映射规则映射了 I/Q 数据和 PON数据。
分离单元 52,根据映射规则,从接收单元 51接收的基本帧中分离出 I/Q 数据和 PON数据。
第二发送单元 53 , 将分离单元 52分离出的 I/Q数据发送至基 BBU或 者 RRU。
第三发送单元 54,将分离单元 52分离出的 PON数据发送至 OLT或者 ONU。
其中, 基本帧包括 CPRI基本帧或者 OBSAI基本帧。
进一步地, 在具体实现中, 上述数据发送装置和数据接收装置可以位 于 BBU和 RRU中,以分别进行基本帧的发送和接收,实现 I/Q数据和 PON 数据的传输。 且上述数据发送装置和数据接收装置可以通过一个实体实现, 一种实现方式如图 6所示,其中, 实线部分的一路是将 I/Q数据分别经过光 电转换、 串行器、 通道对齐、 同步处理、 伪随机码检测及 CPRI或者 OBSAI 协议处理后, 与另一路经过光电转换、 串行器的 PON数据在数据发送装置 一同映射到基本帧中进行发送; 虚线部分是从光纤接收到映射后的基本帧 后, 对该基本帧分别经过光电转换、 串行器、 通道对齐、 同步处理、 伪随 机码检测及 CPRI或者 OBSAI协议处理后, 在数据接收装置中按照预设的 映射规则分离出 PON数据和 I/Q数据, 并分别送至相应的 PON接口和 CPRI/OBSAI接口。
在本发明实施例中,通过将来自接入网的 PON数据插入到 BBU与 RRU 之间传输的基本帧中, 从而在不增加 OTN设备的前提下, 实现 PON数据 与 I/Q数据共用一根光纤进行发送, 有效降低了系统的建设成本。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的 各示例的单元及算法步骤, 能够以电子硬件、 计算机软件或者二者的结合 来实现, 为了清楚地说明硬件和软件的可互换性, 在上述说明中已经按照 功能一般性地描述了各示例的组成及步骤。 这些功能究竟以硬件还是软件 方式来执行, 取决于技术方案的特定应用和设计约束条件。 专业技术人员 可以对每个特定的应用来使用不同方法来实现所描述的功能, 但是这种实 现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为了描述的方便和简洁, 上 述描述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中 的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实 现时可以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成 到另一个系统, 或一些特征可以忽略, 或不执行。 另外, 所显示或讨论的 相互之间的耦合或直接耦合或通信连接可以是通过一些接口、 装置或单元 的间接耦合或通信连接, 也可以是电的, 机械的或其它的形式连接。 作为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本发明实施例方案的目的。 另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以是两个或两个以上单元集成 在一个单元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用 软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销 售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的技术方案本质上或者说对现有技术做出贡献的部分, 或者该技术 方案的全部或部分可以以软件产品的形式体现出来, 该计算机软件产品存 储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是个 人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的 全部或部分步骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 ( ROM, Read-Only Memory ), 随机存取存储器 (RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局 限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可 轻易想到各种等效的修改或替换, 这些修改或替换都应涵盖在本发明的保 护范围之内。 因此, 本发明的保护范围应以权利要求的保护范围为准。

Claims

权利要求
1、 一种数据发送方法, 其特征在于, 包括:
获取来自基带处理单元 BBU或者射频处理单元 RRU的正交 /同相 I/Q 数据;
获取来自光线路终端 OLT或者光网络节点 ONU的无源光网络 PON数 据;
将所述 I/Q数据和所述 PON数据按照预设的映射规则映射至基本帧中, 并发送所述基本帧。
2、 如权利要求 1所述的方法, 其特征在于, 所述基本帧包括通用公共 无线接口 CPRI基本帧或者开放式基站架构 OBSAI基本帧。
3、 如权利要求 1或 2所述的方法, 其特征在于, 所述将所述 I/Q数据 和所述 PON数据按照预设的映射规则映射至基本帧中包括:
将所述 I/Q数据在所述基本帧中从左至右进行映射, 将所述 PON数据 在所述基本帧中从右至左进行映射; 或者
将所述 PON数据在所述基本帧中从左至右进行映射, 将所述 I/Q数据 在所述基本帧中从右至左进行映射。
4、 一种数据接收方法, 其特征在于, 包括:
接收基本帧, 所述基本帧中按照预设的映射规则映射了正交 /同相 I/Q 数据和无源光网络 PON数据;
根据所述映射规则, 从所述基本帧中分离出所述 I/Q数据和所述 PON 数据;
将所述 I/Q数据发送至基带处理单元 BBU或者射频处理单元 RRU; 将所述 PON数据发送至光线路终端 OLT或者光网络节点 ONU。
5、 如权利要求 4所述的方法, 其特征在于, 所述基本帧包括通用公共 无线接口 CPRI基本帧或者开放式基站架构 OBSAI基本帧。
6、 如权利要求 4或 5所述的方法, 其特征在于, 所述基本帧中按照预 设的映射规则映射了正交 /同相 I/Q数据和无源光网络 PON数据包括: 所述基本帧中从左至右映射了所述 I/Q数据,所述基本帧中从右至左映 射了所述 PON数据; 或者
所述基本帧中从左至右映射了所述 PON数据, 所述基本帧中从右至左 映射了所述 I/Q数据。
7、 一种数据发送装置, 其特征在于, 包括:
第一获取单元, 用于获取来自基带处理单元 BBU或者射频处理单元 RRU的正交 /同相 I/Q数据;
第二获取单元, 用于获取来自光线路终端 OLT或者光网络节点 ONU 的无源光网络 PON数据;
映射单元,用于将所述第一获取单元获取的所述 I/Q数据和所述第二获 第一发送单元, 用于发送所述映射单元映射后的所述基本帧。
8、 如权利要求 7所述的装置, 其特征在于, 所述基本帧包括通用公共 无线接口 CPRI基本帧或者开放式基站架构 OBSAI基本帧。
9、 如权利要求 7或 8所述的装置, 其特征在于, 所述映射单元具体用 于:
将所述 I/Q数据在所述基本帧中从左至右进行映射;
将所述 PON数据在所述基本帧中从右至左进行映射; 或者
将所述 PON数据在所述基本帧中从左至右进行映射;
将所述 I/Q数据在所述基本帧中从右至左进行映射。
10、 一种数据接收装置, 其特征在于, 包括:
接收单元, 用于接收基本帧, 所述基本帧中按照预设的映射规则映射 了正交 /同相 I/Q数据和无源光网络 PON数据;
分离单元, 用于根据所述映射规则, 从所述接收单元接收的所述基本 帧中分离出所述 I/Q数据和所述 PON数据;
第二发送单元,用于将所述分离单元分离出的所述 I/Q数据发送至基带 处理单元 BBU或者射频处理单元 RRU;
第三发送单元, 用于将所述分离单元分离出的所述 PON数据发送至光 线路终端 OLT或者光网络节点 ONU。
11、 如权利要求 10所述的装置, 其特征在于, 所述基本帧包括通用公 共无线接口 CPRI基本帧或者开放式基站架构 OBSAI基本帧。
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