WO2012149765A1 - 一种无线系统调试方法和装置 - Google Patents

一种无线系统调试方法和装置 Download PDF

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Publication number
WO2012149765A1
WO2012149765A1 PCT/CN2011/080064 CN2011080064W WO2012149765A1 WO 2012149765 A1 WO2012149765 A1 WO 2012149765A1 CN 2011080064 W CN2011080064 W CN 2011080064W WO 2012149765 A1 WO2012149765 A1 WO 2012149765A1
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Prior art keywords
bbu
clock
enb
time domain
terminal
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PCT/CN2011/080064
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English (en)
French (fr)
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韩茜
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中兴通讯股份有限公司
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Publication of WO2012149765A1 publication Critical patent/WO2012149765A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/06—Testing, supervising or monitoring using simulated traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Definitions

  • the present invention relates to the field of communications, and in particular, to a wireless system debugging method and apparatus. Background technique
  • the related baseband and radio processing unit includes an Evolved Node B (eNB) baseband unit (BBU), and an eNB radio remote unit (RRR). ), terminal radio unit and terminal BBU unit.
  • eNB Evolved Node B
  • RRR eNB radio remote unit
  • terminal radio unit and terminal BBU unit For the downlink, after the eNB BBU is processed, the downlink time domain data is sent to the eNB RRU, and is transformed by the eNB RRU and sent out through the air interface; the terminal radio unit receives the data through the air interface, performs inverse transformation, and then delivers the data to the terminal BBU. Perform the corresponding processing to complete the entire downstream process.
  • FIG. 1 is a flowchart of downlink processing from an eNB BBU to a terminal BBU in the LTE system in the prior art. As shown in FIG. 1 , the steps include:
  • Step 101 The eNB BBU unit completes the baseband downlink processing according to the protocol, and transmits the processed downlink time domain data to the eNB RRU, where the physical interface is generally a fiber transmission interface;
  • Step 102 The eNB RRU unit performs digital-to-analog conversion on the downlink time domain data, modulates to the corresponding frequency point, and sends the obtained downlink radio frequency signal through the air interface, where the physical interface is a wireless transmission interface, that is, a Uu interface;
  • Step 103 The terminal radio unit receives the downlink radio frequency signal sent by the base station, converts it into downlink time domain data, and transmits the data to the terminal BBU.
  • the physical interface may be a variety of transmission interfaces that are consistent with the eNB BBU and the eNB RRU interface.
  • Step 104 The terminal BBU unit receives downlink time domain data transmitted by the terminal radio unit, and performs downlink baseband processing according to the protocol.
  • FIG. 2 is a flowchart of uplink processing from a terminal BBU to an eNB BBU in the LTE system in the prior art. As shown in FIG. 2, the steps include:
  • Step 201 The terminal BBU unit completes the baseband uplink processing according to the protocol, and transmits the processed uplink time domain data to the terminal radio unit, and the physical interface may be various transmission interfaces that are consistent with the eNB BBU and the eNB RRU interface;
  • Step 202 The terminal radio unit performs analog-to-digital conversion on the received uplink time domain data, modulates it to the corresponding frequency point, and sends the obtained uplink radio frequency signal through the air interface.
  • the physical interface is a wireless transmission interface, that is, the Uu interface. ;
  • Step S203 The eNB RRU unit receives the uplink radio frequency signal sent by the terminal, and converts it into uplink time domain data and transmits the data to the eNB BBU unit.
  • Step S204 The eNB BBU unit receives the uplink time domain data sent by the eNB RRU unit, completes the uplink baseband processing, and the processing of the eNB BBU unit is completed.
  • a wireless system debugging method including: Step A: directly connecting a base station baseband unit eNB BBU and a terminal BBU in a wireless system;
  • Step B The eNB BBU sends downlink time domain data to the terminal BBU.
  • Step C The terminal BBU synchronizes its own sending clock to the downlink time domain data. And transmitting, by the eNB BBU, uplink time domain data to the eNB BBU, where the eNB BBU and the terminal BBU perform wireless system debugging by using the uplink time domain data and the downlink time domain data.
  • step C is specifically:
  • Step C1 the terminal BBU receives the downlink time domain data, and recovers the downlink clock from the data.
  • Step C2 using the downlink clock, obtaining a transmission clock for transmitting uplink time domain data;
  • Step C3 using the sending clock, The uplink time domain data is sent to the eNB BBU.
  • the downlink clock is at the same frequency as the eNB BBU clock.
  • the eNB BBU and the terminal BBU are directly connected by using an optical fiber.
  • a wireless system debugging apparatus including:
  • the eNB BBU is configured to send downlink time domain data to the terminal BBU, and receive uplink time domain data sent by the terminal BBU to perform wireless system debugging.
  • a terminal BBU configured to receive the downlink time domain data, and synchronize its transmit clock to the eNB
  • uplink time domain data is sent to the eNB BBU to perform wireless system debugging.
  • terminal BBU includes:
  • a clock recovery unit configured to receive downlink time domain data, and recover a downlink clock from the data
  • a sending clock generating unit configured to obtain, by using the downlink clock, a sending clock for sending uplink time domain data
  • a data sending unit configured to send the uplink time domain data to the eNB BBU by using the sending clock.
  • the downlink clock is at the same frequency as the eNB BBU clock.
  • the eNB BBU and the terminal BBU are directly connected by using an optical fiber.
  • the present invention can easily locate problems other than radio frequency, ensure the progress of the research and the quality of the product by completing the test without the radio frequency part, and is not affected by the radio frequency unit in the pre-BBU development stage. Restrictions on research and development progress, improve R&D efficiency; At the same time, with the method of the present invention, access and service processing can also be performed when the system is added with L2, L3 and the core network.
  • FIG. 1 is a downlink processing flow diagram from an eNB BBU to a terminal BBU in a LTE system in the prior art
  • FIG. 2 is a flow chart of uplink processing from a terminal BBU to an eNB BBU in the LTE system in the prior art
  • FIG. 3 is a flowchart of a method for debugging a wireless system according to an embodiment of the present invention
  • FIG. 4 is a flowchart of generating a transmission clock according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of a wireless system debugging apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a wireless system debugging method provided by an embodiment of the present invention in an existing LTE system
  • FIG. 7 is a structural diagram of a terminal BBU according to an embodiment of the present invention. detailed description
  • FIG. 3 is a flowchart of a method for debugging a wireless system according to an embodiment of the present invention. As shown in FIG. 3, the steps include:
  • Step 301 Directly connect the eNB BBU and the terminal BBU in the wireless system.
  • Step 303 The terminal BBU synchronizes its transmit clock to the eNB by using the downlink time domain data.
  • the eNB BBU and the terminal BBU perform wireless system debugging by using the uplink time domain data and the downlink time domain data.
  • the eNB BBU and the terminal BBU are directly connected by using an optical fiber.
  • the eNB BBU performs baseband downlink processing according to the protocol, and sends the processed downlink time domain data to the terminal BBU through the physical interface.
  • the physical interface is a variety of transmission interfaces that are consistent with an eNB BBU interface.
  • the terminal BBU recovers the downlink clock from the received downlink time domain data, and obtains a transmission clock for transmitting the uplink time domain data by using the downlink clock, and sends the uplink time domain data to the terminal BBU. That is, the terminal BBU uses the recovered downlink clock as its transmission clock instead of using the terminal local clock as the transmission clock. Since the transmission clock of the same frequency as the eNB is used, the synchronization of the uplink transmission clock and the eNB is ensured, thereby ensuring the correct transmission of data.
  • the downlink clock is a clock synchronized with downlink time domain data, that is, a clock of the same frequency as the eNB BBU clock.
  • the terminal BBU After receiving the downlink time domain data and performing clock synchronization, the terminal BBU performs baseband downlink processing, where the baseband downlink processing includes parsing the downlink time domain data, that is, demodulating the downlink of the wireless system.
  • the terminal BBU For the baseband uplink, the terminal BBU performs baseband uplink processing according to the protocol, and sends the obtained uplink time domain data to the eNB through the physical interface.
  • the BBUo eNB BBU receives the uplink time domain data, and performs baseband uplink processing, where the baseband uplink processing includes The uplink time domain data is parsed, that is, the radio system uplink is demodulated.
  • FIG. 4 is a flowchart of generating a transmission clock according to an embodiment of the present invention.
  • the step of implementing the synchronization of the transmission clock of the terminal BBU unit and the eNB BBU includes:
  • Step 401 The terminal BBU receives the downlink time domain data sent by the eNB BBU, and recovers the downlink clock synchronized with the data from the data, that is, the same frequency as the clock of the eNB BBU.
  • Step 402 The terminal BBU uses the recovered downlink clock as its sending clock.
  • Step 403 The terminal BBU sends the uplink time domain data to the eNB BBU.
  • the terminal BBU uses the transmission clock of the same frequency as the eNB clock, the uplink transmission clock of the terminal and the clock of the eNB are ensured, thereby ensuring the correct transmission of data.
  • FIG. 5 is a structural diagram of a wireless system debugging apparatus according to an embodiment of the present invention. As shown in FIG. 5, the eNB BBU and the terminal BBU are directly connected.
  • the eNB BBU is configured to send downlink time domain data to the terminal BBU, and use the uplink time domain data sent by the terminal BBU to perform wireless system debugging. That is to say, the eNB BBU is used for performing data processing of the eNB baseband part, and completes debugging of the baseband uplink and downlink of the wireless system.
  • the terminal BBU is configured to use the downlink time domain data to synchronize its transmit clock to the eNB BBU clock, and then send the uplink time domain data to the eNB BBU to complete the wireless system debugging. That is to say, the terminal BBU is used for data processing of the baseband part of the terminal, and completes debugging of uplink and downlink of the baseband of the wireless system.
  • the networking mode in which the eNB BBU and the terminal BBU are directly connected can be used to improve the efficiency of the positioning problem during the R&D and debugging process and reduce the BBU debugging time caused by the radio frequency performance.
  • the steps of system debugging include:
  • Step 501 Establish a system, and directly connect the eNB BBU and the terminal BBU by using the optical fiber, that is, the radio part of the e NB RRU and the terminal radio unit are not included;
  • Step 502 The eNB BBU performs baseband downlink processing according to the protocol, and obtains downlink time domain data, and sends the data to the terminal BBU through the optical port.
  • Step 503 The terminal BBU receives the downlink time domain data from its optical port, and recovers a downlink clock of the same frequency as the clock of the eNB BBU from the data.
  • Step 504 The terminal BBU uses the downlink clock as its sending clock.
  • Step 505 The terminal BBU performs basic baseband downlink processing by using the downlink time domain data to complete downlink debugging of the wireless system baseband;
  • Step 506 The terminal BBU performs baseband uplink processing according to the protocol, and uses the sending time. Clock, the obtained uplink time domain data is sent to the eNB BBU through its optical port;
  • Step 507 The eNB BBU receives the uplink time domain data from its optical port, performs baseband uplink processing, and completes base station uplink debugging of the wireless system.
  • This embodiment is an initial debugging of the BBU. Since there is no radio frequency part in the radio system, there is no signaling communication between the eNB BBU and the eNB RRU, and between the terminal BBU and the terminal radio unit.
  • the LTE system includes an eNB BBU, an eNB RRU, a terminal radio unit, and a terminal BBU, as shown in FIG. 6 .
  • the method described in the present invention is used, and the specific implementation steps are as follows:
  • Step 601 The eNB BBU and the terminal BBU are directly connected by using an optical fiber, that is, the radio part including the eNB RRU and the terminal radio unit of the existing LTE system is removed during the debugging process;
  • Step 602 The terminal BBU receives the downlink time domain data sent by the eNB BBU from the optical port.
  • Step 604 The terminal BBU uses the downlink clock as its sending clock.
  • Step 605 The terminal BBU performs basic baseband downlink processing by using the downlink time domain data to complete downlink debugging of the wireless system baseband;
  • Step 605 The terminal BBU sends the uplink time domain data to the eNB BBU through the optical port, so that the eNB BBU uses the uplink time domain data to complete the base station uplink debugging of the wireless system.
  • FIG. 7 is a structural diagram of a terminal BBU according to an embodiment of the present invention. As shown in FIG. 7, the method includes: a clock recovery unit, configured to receive downlink time domain data sent by an eNB BBU, and recover synchronization with the eNB from the data. Downstream clock
  • the present invention completes all tests without radio frequency by directly connecting the eNB BBU and the terminal BBU, and can conveniently locate problems other than radio frequency in time, reduce debugging time, ensure the progress of development and product quality, and can also be applied. In other wireless access systems.
  • the invention completes all tests without radio frequency by directly connecting the eNB BBU and the terminal BBU, and can conveniently locate problems other than radio frequency in time, reduce debugging time, ensure development progress and product quality; and the invention can also be applied to other wireless connections. Into the system.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明公开了一种无线系统调试方法和装置，用于在研发阶段更好地定位系统问题。本发明通过直接连接eNBBBU和终端BBU完成不带射频的所有测试，能够及时方便的定位射频以外的问题，减少调试时间，保证研发的进度和产品质量；本发明也可以应用在其他的无线接入系统中。

Description

一种无线系统调试方法和装置 技术领域
本发明涉及通信领域， 特别涉及一种无线系统调试方法和装置。 背景技术
在长期演进 (Long Term Envolution, LTE)系统中， 相关的基带和射频 处理单元包括基站（ Evolved Node B, eNB )基带单元（ BaseBand Unit, BBU )、 eNB 的射频拉远单元（Radio Remote Unit, RRU ), 终端射频单元和终端 BBU单元。对于下行来说， eNB BBU处理完后，将下行时域数据发送给 eNB RRU, 由 eNB RRU进行变换后通过空口发送出去； 终端射频单元通过空口 收到数据后进行反变换， 然后交给终端 BBU进行相应的处理 ， 完成整个 下行过程。 图 1显示了现有技术的 LTE系统中从 eNB BBU到终端 BBU的 下行处理流程图， 如图 1所示， 步驟包括：
步驟 101 : eNB BBU单元根据协议完成基带下行处理， 并将处理后的 下行时域数据传送给 eNB RRU, 物理接口一般为光纤传输接口；
步驟 102: eNB RRU单元将下行时域数据进行数模转换， 调制到对应 的频点上， 并将得到的下行射频信号通过空口发送出去， 物理接口为无线 传输接口， 即 Uu接口；
步驟 103: 终端射频单元接收基站下发的下行射频信号，将其转换为下 行时域数据后 ,传送给终端 BBU,物理接口可以为与 eNB BBU和 eNB RRU 接口一致的各种传输接口；
步驟 104:终端 BBU单元接收终端射频单元传送过来的下行时域数据， 根据协议完成下行基带处理。
对于上行来说，上行时域数据依次经过终端 BBU,终端射频单元， eNB RRU和 eNB BBU。 图 2显示了现有技术的 LTE系统中从终端 BBU到 eNB BBU的上行处理流程图， 如图 2所示， 步驟包括：
步驟 201 : 终端 BBU单元按照协议完成基带上行处理， 将处理后得到 的上行时域数据传送给终端射频单元，物理接口可以为与 eNB BBU和 eNB RRU接口一致的各种传输接口；
步驟 202: 终端射频单元将接收到的上行时域数据进行模数变换， 将其 调制到对应的频点， 并将得到的上行射频信号通过空口发送出去， 物理接 口为无线传输接口， 即 Uu接口；
步驟 S203: eNB RRU单元接收终端发送的上行射频信号， 将其变换为 上行时域数据传送给 eNB BBU单元；
步驟 S204: eNB BBU单元接收 eNB RRU单元发送的上行时域数据， 完成上行基带处理， 至此 eNB BBU单元的处理完成。
无线系统在这种连接关系下， 如果系统中的各个单元均处于研发阶段， 每个单元都相对不稳定， 那么在调试过程中由于各自的不稳定性互相影响， 性能问题， 不利于研发过程中定位和解决问题， 大大增加了定位问题的范 围和时间， 从而延緩研发进度。 发明内容
本发明的目的在于提供一种无线系统调试方法和装置， 能更好地解决 无线系统问题定位困难的问题。
根据本发明的一个方面， 提供的一种无线系统调试方法包括： 步驟 A、 将无线系统中的基站基带单元 eNB BBU和终端 BBU直接进 行连接；
步驟 B、 eNB BBU向终端 BBU发送下行时域数据；
步驟 C、 终端 BBU利用所述下行时域数据， 将自身的发送时钟同步到 所述 eNB BBU时钟上 , 再向所述 eNB BBU发送上行时域数据； 其中， 所述 eNB BBU和所述终端 BBU利用所述上行时域数据和下行 时域数据进行无线系统调试。
进一步地， 所述步驟 C具体为：
步驟 Cl、 终端 BBU接收下行时域数据， 从该数据中恢复下行时钟； 步驟 C2、利用所述下行时钟，得到用于发送上行时域数据的发送时钟； 步驟 C3、 利用所述发送时钟， 将上行时域数据发送到 eNB BBU。
进一步地， 所述下行时钟与 eNB BBU时钟同频。
进一步地， 所述 eNB BBU与终端 BBU通过光纤直接相连。
根据本发明的另一方面， 提供了一种无线系统调试装置包括：
eNB BBU, 用于向终端 BBU发送下行时域数据， 并接收终端 BBU发 送的上行时域数据， 进行无线系统调试；
终端 BBU, 用于接收所述下行时域数据， 把其发射时钟同步到 eNB
BBU时钟上， 再向所述 eNB BBU发送上行时域数据， 进行无线系统调试。
进一步地， 所述终端 BBU包括：
时钟恢复单元， 用于接收下行时域数据， 并从该数据中恢复下行时钟； 发送时钟生成单元， 用于利用所述下行时钟， 得到用于发送上行时域 数据的发送时钟；
数据发送单元， 用于利用所述发送时钟， 将上行时域数据发送到 eNB BBU。
进一步地， 所述下行时钟与 eNB BBU时钟同频。
进一步地， 所述 eNB BBU与终端 BBU通过光纤直接相连。
与现有技术相比较， 本发明的有益效果在于： 本发明通过完成不带射 频部分的测试， 能够方便定位射频以外的问题， 保证研发的进度和产品质 量； 在前期 BBU研发阶段不受射频单元研发进度的限制， 提高研发效率； 同时， 采用本发明所述方法， 在系统加上 L2、 L3以及核心网时， 同样可以 进行接入和业务处理。 附图说明
图 1是现有技术的 LTE系统中从 eNB BBU到终端 BBU的下行处理流 程图；
图 2是现有技术的 LTE系统中从终端 BBU到 eNB BBU的上行处理流 程图；
图 3是本发明实施例提供的无线系统调试方法流程图；
图 4是本发明实施例提供的发送时钟生成流程图；
图 5是本发明实施例提供的无线系统调试装置结构图；
图 6是本发明实施例提供的无线系统调试方法在现有 LTE系统中的应 用；
图 7是本发明实施例提供的终端 BBU结构图。 具体实施方式
以下结合附图对本发明的优选实施例进行详细说明， 应当理解， 以下 所说明的优选实施例仅用于说明和解释本发明， 并不用于限定本发明。
图 3显示了本发明实施例提供的无线系统调试方法流程图， 如图 3所 示， 步驟包括：
步驟 301： 将无线系统中的 eNB BBU和终端 BBU直接进行连接。 步驟 302： eNB BBU向终端 BBU发送下行时域数据；
步驟 303:终端 BBU利用所述下行时域数据，把其发送时钟同步到 eNB
BBU时钟上， 再向所述 eNB BBU发送上行时域数据；
其中， 所述 eNB BBU和所述终端 BBU利用所述上行时域数据和下行 时域数据进行无线系统调试。 上述步驟 301中， 所述 eNB BBU与终端 BBU通过光纤直接相连。 上述步驟 302中， eNB BBU根据协议进行基带下行处理， 并通过物理 接口向终端 BBU发送处理后得到的下行时域数据。所述物理接口为与 eNB BBU接口一致的各种传输接口。
由于本发明中没有 eNB RRU和终端射频单元， 而系统中终端必须和 eNB同步， 因此需要终端 BBU的发送时钟必须和 eNB BBU完全同步， 否 则数据传输会出错。 因此， 在上述步驟 303中， 终端 BBU从接收的下行时 域数据中恢复下行时钟， 并利用所述下行时钟得到用于发送上行时域数据 的发送时钟， 将上行时域数据发送到终端 BBU。 也就是说， 终端 BBU将恢 复的所述下行时钟用作其发送时钟， 而不是使用终端本地时钟作为发送时 钟。 由于使用的是和 eNB同频的发送时钟， 因此保证了终端上行的发送时 钟和 eNB的同步， 从而保证了数据的正确传输。
所述下行时钟是与下行时域数据同步的时钟， 即与 eNB BBU时钟同频 的时钟。
终端 BBU接收下行时域数据并进行时钟同步后， 进行基带下行处理， 所述基带下行处理包括对所述下行时域数据进行解析， 即对无线系统下行 进行解调。 对于基带上行， 终端 BBU根据协议进行基带上行处理， 并将得 到的上行时域数据通过物理接口发送至 eNB BBUo eNB BBU接收所述上行 时域数据， 进行基带上行处理， 所述基带上行处理包括对所述上行时域数 据进行解析， 即对无线系统上行进行解调。
图 4显示了本发明实施例提供的发送时钟生成流程图， 如图 4所示， 终端 BBU单元发送时钟和 eNB BBU同步实现步驟包括：
步驟 401 : 终端 BBU接收 eNB BBU发送的下行时域数据， 从该数据 中恢复出和数据同步的下行时钟， 即与 eNB BBU的时钟同频；
步驟 402: 终端 BBU将恢复的所述下行时钟用作其发送时钟； 步驟 403： 终端 BBU将上行时域数据发送至 eNB BBU。
由于终端 BBU使用了和 eNB时钟同频的发送时钟，因此保证了终端上 行发送时钟和 eNB的时钟同步， 从而保证了数据的正确传输。
图 5显示了本发明实施例提供的无线系统调试装置结构图， 如图 5所 示， 包括直接连接的 eNB BBU和终端 BBU:
所述 eNB BBU,用于向终端 BBU发送下行时域数据，并利用终端 BBU 发送的上行时域数据， 进行无线系统调试。 也就是说， eNB BBU用于进行 eNB基带部分的数据处理， 完成无线系统基带上行和下行的调试。
终端 BBU, 用于利用所述下行时域数据， 把其发射时钟同步到 eNB BBU时钟上， 再向所述 eNB BBU发送上行时域数据， 完成无线系统调试。 也就是说， 终端 BBU用于进行终端基带部分的数据处理， 完成无线系统基 带上行和下行的调试。
eNB BBU和终端 BBU直接连接的组网方式， 在 BBU研发初期， 可用 于提高研发调试过程中定位问题的效率， 减少因射频部分性能引起的 BBU 调试时间延长的问题。 系统调试的步驟包括：
步驟 501 : 搭建系统， 使用光纤将 eNB BBU和终端 BBU直接连接， 即其中不包括 eNB RRU和终端射频单元的射频部分；
步驟 502: eNB BBU根据协议进行基带下行处理， 得到下行时域数据， 并通过光口将该数据发送至终端 BBU;
步驟 503: 终端 BBU从其光口接收所述下行时域数据， 并从该数据中 恢复出和 eNB BBU的时钟同频的下行时钟；
步驟 504: 终端 BBU将下行时钟作为其发送时钟；
步驟 505: 终端 BBU利用所述下行时域数据， 进行基带下行处理， 完 成无线系统基带下行调试；
步驟 506: 终端 BBU根据协议进行基带上行处理， 并利用所述发送时 钟， 通过其光口将得到的上行时域数据发送至 eNB BBU;
步驟 507: eNB BBU从其光口接收所述上行时域数据， 进行基带上行 处理， 完成无线系统基带上行调试。
本实施例为 BBU研发初期的调试， 由于无线系统中无射频部分， 因此 不会出现 eNB BBU与 eNB RRU之间，以及终端 BBU和终端射频单元之间 的信令通信。
图 6显示了本发明实施例提供的无线系统调试方法在现有 LTE系统中 的应用， 如图 6所示， 现有 LTE系统包括 eNB BBU、 eNB RRU, 终端射频 单元和终端 BBU。在后期开发过程中，为了更好的定位 BBU的问题或 RRU 的问题， 使用本发明所述的方法， 具体实施步驟如下：
步驟 601 : 将 eNB BBU和终端 BBU用光纤直接连接， 即在调试过程 中去除现有 LTE系统的包括 eNB RRU和终端射频单元的射频部分；
步驟 602： 终端 BBU从其光口上接收 eNB BBU发送的下行时域数据； 步驟 603: 终端 BBU从所述下行时域数据中恢复出下行时钟， 该时钟 与 eNB BBU的时钟同频；
步驟 604: 终端 BBU将所述下行时钟作为其发送时钟；
步驟 605: 终端 BBU利用所述下行时域数据， 进行基带下行处理， 完 成无线系统基带下行调试；
步驟 605：终端 BBU将上行时域数据通过光口发送给 eNB BBU,使 eNB BBU利用所述上行时域数据完成无线系统基带上行调试。
图 7显示了本发明实施例提供的终端 BBU结构图，如图 7所示，包括： 时钟恢复单元， 用于接收 eNB BBU发送的下行时域数据， 并从该数据 中恢复出与 eNB同步的下行时钟；
发送时钟生成单元， 用于将恢复的下行时钟作为其发送时钟， 也就是 说并不是使用终端的本地时钟； 数据发送单元， 用于使用所述发送时钟将上行时域数据发送出去。 综上所述， 本发明通过直接连接 eNB BBU和终端 BBU完成不带射频 的所有测试， 能够及时方便的定位射频以外的问题， 减少调试时间， 保证 研发的进度和产品质量； 此外， 也可以应用在其他的无线接入系统中。
尽管上文对本发明进行了详细说明， 但是本发明不限于此， 本技术领 域技术人员可以根据本发明的原理进行各种修改。 因此， 凡按照本发明原 理所作的修改， 都应当理解为落入本发明的保护范围。 工业实用性
本发明通过直接连接 eNB BBU和终端 BBU完成不带射频的所有测试， 能够及时方便的定位射频以外的问题， 减少调试时间， 保证研发的进度和 产品质量； 本发明也可以应用在其他的无线接入系统中。

Claims

权利要求书
1、 一种无线系统调试方法， 该方法包括：
A、将无线系统中的基站基带单元 eNB BBU和终端基带单元终端 BBU 直接进行连接；
B、 eNB BBU向终端 BBU发送下行时域数据；
C、 终端 BBU利用所述下行时域数据， 将自身的发送时钟同步到所述 eNB BBU时钟上 , 再向所述 eNB BBU发送上行时域数据；
其中， 所述 eNB BBU和所述终端 BBU利用所述上行时域数据和下行 时域数据进行无线系统调试。
2、 根据权利要求 1所述的无线系统调试方法， 其中， 步驟 C具体为： Cl、 终端 BBU接收下行时域数据， 从该数据中恢复下行时钟；
C2、 利用所述下行时钟， 得到用于发送上行时域数据的发送时钟； C3、 利用所述发送时钟， 将上行时域数据发送到 eNB BBU。
3、 根据权利要求 2所述的无线系统调试方法， 其中， 所述下行时钟与 eNB BBU时钟同频。
4、 根据权利要求 1所述的无线系统调试方法， 其中， 所述 eNB BBU 与终端 BBU通过光纤直接相连。
5、 一种无线系统调试装置， 该装置包括：
eNB BBU, 用于向终端 BBU发送下行时域数据， 并接收终端 BBU发 送的上行时域数据， 进行无线系统调试；
终端 BBU, 用于接收所述下行时域数据， 并将自身的发送时钟同步到 eNB BBU时钟上， 再向所述 eNB BBU发送上行时域数据， 进行无线系统 调试。
6、 根据权利要求 5 所述的无线系统调试装置， 其中， 所述终端 BBU 包括： 时钟恢复单元， 用于接收下行时域数据， 并从该数据中恢复下行时钟； 发送时钟生成单元， 用于利用所述下行时钟， 得到用于发送上行时域 数据的发送时钟；
数据发送单元， 用于利用所述发送时钟， 将上行时域数据发送到 eNB BBU。
7、 根据权利要求 6所述的无线系统调试装置， 其中， 所述下行时钟与 eNB BBU时钟同频。
8、 根据权利要求 5所述的无线系统调试装置， 其中， 所述 eNB BBU 与终端 BBU通过光纤直接相连。
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