WO2012088926A1 - Method and device for dealing with signal transmission with different bandwidths in wireless communication system - Google Patents

Method and device for dealing with signal transmission with different bandwidths in wireless communication system Download PDF

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Publication number
WO2012088926A1
WO2012088926A1 PCT/CN2011/079569 CN2011079569W WO2012088926A1 WO 2012088926 A1 WO2012088926 A1 WO 2012088926A1 CN 2011079569 W CN2011079569 W CN 2011079569W WO 2012088926 A1 WO2012088926 A1 WO 2012088926A1
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transmission signal
signal
downlink transmission
data rate
rate conversion
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PCT/CN2011/079569
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French (fr)
Chinese (zh)
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张磊
孙波
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中兴通讯股份有限公司
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Publication of WO2012088926A1 publication Critical patent/WO2012088926A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/001Channel filtering, i.e. selecting a frequency channel within the SDR system

Definitions

  • the present invention relates to wireless communication technologies, and more particularly to a method and apparatus for processing different bandwidth signal transmissions in a wireless communication system. Background technique
  • the required signal transmission bandwidth may be inconsistent for different standard technologies, but each technology has the need to support different bandwidth signal transmissions.
  • some technologies support a transmission bandwidth that is an integer multiple of the minimum bandwidth.
  • the system is relatively easy to implement, while other technologies support a transmission bandwidth that is not an integer multiple of the minimum bandwidth.
  • This system needs to be overcome.
  • Many complex technical problems, system implementation is subject to certain logic devices and device constraints such as digital / analog converter (DAC), analog / digital converter (ADC), clock, etc., when the system realizes different bandwidth signal transmission, each Bandwidth requires a software version to implement. When the whole machine is used, select the software version with different bandwidth according to the requirements.
  • 3G and 4G base stations transmit signals of different bandwidths, taking into account factors such as clock scheme, logic resources, and design cost, and most of them are designed with different software versions.
  • the disadvantages of this approach are: Increase the workload of the entire R&D, testing, production, and management process. Because of the introduction of too many factors in the development process of the whole machine, this will reduce the reliability of the whole machine. Sex, there is the possibility of bringing other problems. At the same time, too many software versions make management prone to confusion and may distribute the wrong version to the entire device. Summary of the invention
  • the invention provides a method and a device for processing different bandwidth signal transmissions in a wireless communication system, which are used to solve the problem that the transceiver uses a software version to achieve multiple bandwidth switching requirements.
  • a method for processing different bandwidth signal transmissions in a wireless communication system comprising:
  • a corresponding interpolation filtering structure is selected, and the downlink transmission signal is subjected to baseband data rate conversion.
  • the method further includes:
  • the downlink transmission signals of different bandwidths share the interpolation filtering structure in the baseband data rate conversion process.
  • the method further includes: converting the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, and further converting into the radio frequency signal and transmitting.
  • the method further includes:
  • the method further includes: The uplink transmission signals of different bandwidths share the decimation filtering structure in the baseband data rate conversion process.
  • An apparatus for processing different bandwidth signal transmissions in a wireless communication system comprising: an interface unit, a control unit, a clock processing unit, and a digital processing unit;
  • An interface unit configured to acquire bandwidth information of a downlink transmission signal
  • control unit configured to generate system configuration information according to bandwidth information of the downlink transmission signal, and control the clock processing unit to output a system sample clock that is adapted to the bandwidth information of the downlink transmission signal;
  • a clock processing unit configured to generate, by the control unit, a system sampling clock that is adapted to the bandwidth information of the downlink transmission signal
  • a digital processing unit configured to select a corresponding interpolation filtering structure according to the generated system sampling clock and the system configuration information, and perform baseband data rate conversion on the downlink transmission signal.
  • the digital processing unit is further configured to share the interpolation filtering structure of the downlink transmission signals of different bandwidths in the process of performing baseband data rate conversion on the downlink transmission signal.
  • the device further includes:
  • the IF radio unit is configured to convert the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, and further convert it into a radio frequency signal and transmit.
  • the intermediate frequency radio frequency unit is further configured to receive an uplink transmission signal corresponding to the downlink transmission signal, convert the uplink transmission signal into an intermediate frequency signal, and further convert the signal into a baseband signal, and then send the signal to the digital processing unit;
  • the digital processing unit is further configured to: according to the generated system sample clock and system configuration information, select a corresponding decimation filtering structure, perform baseband data rate conversion on the uplink transmission signal, and send the data through the interface unit.
  • the digital processing unit is further configured to share the decimation filtering structure of the uplink transmission signals of different bandwidths in the process of performing baseband data rate conversion on the uplink transmission signal after being converted into the baseband signal.
  • the method and the device of the present invention achieve multiple bandwidth switching requirements by using a set of software versions, which saves version switching time and improves version management efficiency compared with different signal bandwidth transmission technologies implemented by different software versions in the prior art. And reliability, while improving the development of the whole machine, production efficiency, and reducing development costs.
  • FIG. 1 is a flow chart of a method for processing different bandwidth signal transmissions in a wireless communication system according to the present invention
  • FIG. 2 is a structural block diagram of an apparatus for processing different bandwidth signal transmissions in a wireless communication system according to the present invention. detailed description
  • the basic idea of the present invention is: By switching the system sample clock and related system configuration, a set of software versions is applicable to a plurality of bandwidths, in particular, a situation in which the bandwidth is not an integer multiple of the minimum bandwidth.
  • FIG. 1 is a flow chart of a method for processing different bandwidth signal transmissions in a wireless communication system according to the present invention. As shown in FIG. 1, the method mainly includes the following steps:
  • Step S10 Acquire bandwidth information of the downlink transmission signal.
  • Step S11 Generate, according to bandwidth information of the downlink transmission signal, a system clock and system configuration information that is compatible with the bandwidth information.
  • the system configuration information includes: a DAC, and ADC configuration information and the like.
  • Step S12 Select a corresponding interpolation filtering structure according to the generated system sampling clock and the system configuration information, and perform baseband data rate conversion on the downlink transmission signal.
  • Step S13 Convert the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, further convert it into a radio frequency signal, and transmit.
  • Step S14 Receive an uplink transmission signal corresponding to the downlink transmission signal, convert the uplink transmission signal into an intermediate frequency signal, and further convert the signal into a baseband signal.
  • Step S15 Select a corresponding decimation filtering structure according to the generated system sampling clock and system configuration information, and perform baseband data rate conversion and transmission on the uplink transmission signal converted to the baseband signal;
  • the uplink transmission signals of different bandwidths should share the decimation filtering structure as much as possible in the baseband data rate conversion process, thereby saving logic resources.
  • the present invention further provides a device for processing different bandwidth signal transmissions in a wireless communication system.
  • the device mainly includes: an interface unit 101, a digital processing unit 102, and an intermediate frequency radio frequency unit 103. , the control unit 104 and the clock processing unit 105; wherein
  • the interface unit 101 is configured to receive a downlink transmission signal, acquire bandwidth information of the downlink transmission signal, and further send the uplink transmission signal.
  • the control unit 104 is configured to complete loading and receiving of the transceiver board software, generate system configuration information according to bandwidth information of the downlink transmission signal, and control the clock processing unit 105 to output a system sampling clock that is adapted to the bandwidth information of the downlink transmission signal;
  • the system configuration information includes: a DAC, and ADC configuration information, etc.;
  • the clock processing unit 105 is configured to generate, under the control of the control unit 104, a system sampling clock that is adapted to the bandwidth information of the downlink transmission signal;
  • the digital processing unit 102 is configured to select a corresponding interpolation filtering structure according to the system sampling clock generated by the clock processing unit 105 and the system configuration information generated by the control unit 104, and perform baseband data rate conversion on the downlink transmission signal; Baseband data clipping, and digital predistortion
  • the performing baseband data rate conversion means performing up-conversion processing
  • the intermediate frequency radio frequency unit 103 is configured to convert the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, and further convert the signal into a radio frequency signal. And launch it.
  • the IF radio unit 103 is further configured to receive an uplink transmission signal corresponding to the downlink transmission signal, and convert the received uplink transmission signal into an intermediate frequency signal, and further convert the signal into a baseband signal, and then send the signal to the digital processing unit 102;
  • the digital processing unit 102 is further configured to: according to the system sampling clock and system configuration information generated when the downlink transmission signal corresponding to the uplink transmission signal is transmitted, select a corresponding decimation filtering structure, perform baseband data rate conversion on the uplink transmission signal, and The transmission is performed by the interface unit 101.
  • the performing baseband data rate conversion means performing down-conversion processing.
  • the digital processing unit 102 in the process of implementing the baseband data rate conversion, the digital processing unit 102 needs to properly consider the clock of the transceiver board system, and as far as possible, the interpolation of the signals of different bandwidths in the rate conversion process.
  • the filtering structure or the decimation filtering structure is shared, thereby saving logic resources.
  • the digital processing unit 102 the control unit 104, and the clock processing unit 105 are used to implement the key parts, and the specific implementations of the three units are further explained below:
  • the unit performs baseband data rate conversion.
  • data rate conversion is mainly implemented by interpolation and extraction.
  • Downlink transmission signal rate conversion namely: interpolation filtering, used to complete baseband data upconversion.
  • interpolation filtering used to complete baseband data upconversion.
  • the selection of the interpolation filtering structure requires consideration of parameters such as signal bandwidth and sampling rate.
  • the bandwidth is B1, B2, B3.
  • the transmission signal with bandwidth B1 needs to be interpolated 12 times to meet the design requirements.
  • the transmission signal with bandwidth B2 can meet the design requirements after 8 times interpolation or 12 times interpolation.
  • the transmission signal with bandwidth B3 is interpolated by 24 times to meet the design requirements.
  • the shared filtering structure can be considered, that is, the transmission signal with bandwidth B2 is selected by 12 times interpolation, and the bandwidth is After the transmission signal of B3 passes through the selector, an additional interpolation filter is added.
  • the transmission signal with bandwidths of Bl, B2, and B3 can completely share the 12-time interpolation filtering structure, which can save many logic resources and does not need to be replaced.
  • a series of more resource-rich logic devices can realize different bandwidth signal transmission and reduce development costs.
  • Uplink signal rate conversion ie: decimation filtering
  • decimation filtering is used to complete the baseband signal down conversion.
  • the decimation filter design is the same as the interpolation filter design. As much as possible, different bandwidth signal transmissions can share the filter structure.
  • the unit mainly completes the monitoring and management of the transceiver, and is responsible for information exchange with the background or upper-level transceiver.
  • the processing flow of the unit is as follows:
  • This unit mainly completes the system clock generation.
  • the main functions of this unit are as follows:
  • a system sampling clock corresponding to the bandwidth of the downlink transmission signal is generated, and different system clock switching corresponding to different bandwidth signals is completed; and an operating clock required by the intermediate frequency radio frequency unit 103 is generated according to the configuration information of the background; The running status of the unit is detected in real time and reported to the control unit 104.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Disclosed is a method for dealing with signal transmission with different bandwidths in a wireless communication system. The method includes: acquiring the bandwidth information about a downlink transmission signal; generating a system sampling clock and system configuration information corresponding to the bandwidth information about the downlink transmission signal according to the bandwidth information about the downlink transmission signal; selecting the corresponding interpolation filter structure to perform baseband data rate transformation on the downlink transmission signal according to the generated system sampling clock and system configuration information. Also disclosed is a device for dealing with signal transmission with different bandwidths in a wireless communication system. By way of the method and device in the present invention, version switching time is saved, the efficiency and reliability of version management is improved, and at the same time, the development and production efficiency of the complete machine are improved, and the development costs are reduced as well.

Description

无线通信系统中处理不同带宽信号传输的方法及装置 技术领域  Method and device for processing different bandwidth signal transmission in wireless communication system
本发明涉及无线通信技术, 尤其涉及无线通信系统中处理不同带宽信 号传输的方法及装置。 背景技术  The present invention relates to wireless communication technologies, and more particularly to a method and apparatus for processing different bandwidth signal transmissions in a wireless communication system. Background technique
随着移动宽带无线通信技术的发展, 一方面使得用户对于信号传输带 宽的要求日益增加, 另一方面由于受频谱资源有限的限制, 运营商需要对 有限的频谱带宽进行合理优化使用, 所以, 釆用不同带宽进行信号传输成 为不可缺少的需求。 连续带宽、 不连续带宽、 相同带宽、 以及不同带宽等 灵活组网的配置, 需要整个无线通信系统的支持。 因此, 对于在无线通信 系统中占据重要位置的网元一基站的设计, 提出了更高的要求。  With the development of mobile broadband wireless communication technology, on the one hand, users have increasingly increased requirements for signal transmission bandwidth. On the other hand, due to limited spectrum resources, operators need to optimize the use of limited spectrum bandwidth. Therefore, 釆Signal transmission with different bandwidths becomes an indispensable requirement. The configuration of flexible networking, such as continuous bandwidth, discontinuous bandwidth, same bandwidth, and different bandwidth, requires the support of the entire wireless communication system. Therefore, higher requirements are placed on the design of a network element-base station occupying an important position in a wireless communication system.
对于不同的制式技术, 所要求的信号传输带宽可能不一致, 但每种技 术都存在支持不同带宽信号传输的需求。 在这些技术中, 一些技术支持的 传输带宽为最小带宽的整数倍, 系统实现起来, 相对比较容易, 而另外一 些技术支持的传输带宽并不是最小带宽的整数倍, 这种系统实现起来, 需 要克服许多复杂技术问题, 系统实现过程中受制于某些逻辑器件以及数字 / 模拟转换器(DAC )、 模拟 /数字转换器(ADC )、 时钟等器件约束, 系统在 实现不同带宽信号传输时, 每种带宽都需要一套软件版本实现。 在整机商 用时, 根据需求选择不同带宽的软件版本。  The required signal transmission bandwidth may be inconsistent for different standard technologies, but each technology has the need to support different bandwidth signal transmissions. Among these technologies, some technologies support a transmission bandwidth that is an integer multiple of the minimum bandwidth. The system is relatively easy to implement, while other technologies support a transmission bandwidth that is not an integer multiple of the minimum bandwidth. This system needs to be overcome. Many complex technical problems, system implementation is subject to certain logic devices and device constraints such as digital / analog converter (DAC), analog / digital converter (ADC), clock, etc., when the system realizes different bandwidth signal transmission, each Bandwidth requires a software version to implement. When the whole machine is used, select the software version with different bandwidth according to the requirements.
目前, 3G、 4G的基站对于不同带宽信号的传输, 考虑到时钟方案、 逻 辑资源、 以及设计成本等因素, 多数釆用不同软件版本进行设计。 这种方 式的弊端在于: 使得整个研发、 测试、 生产、 以及管理过程中增加较多工 作量, 由于在整机开发过程中, 引入了过多因素, 这样, 会降低整机可靠 性, 存在带来其它问题的可能性。 同时, 过多的软件版本使得管理容易产 生混乱, 可能会把错误版本分发到整机设备中。 发明内容 At present, 3G and 4G base stations transmit signals of different bandwidths, taking into account factors such as clock scheme, logic resources, and design cost, and most of them are designed with different software versions. The disadvantages of this approach are: Increase the workload of the entire R&D, testing, production, and management process. Because of the introduction of too many factors in the development process of the whole machine, this will reduce the reliability of the whole machine. Sex, there is the possibility of bringing other problems. At the same time, too many software versions make management prone to confusion and may distribute the wrong version to the entire device. Summary of the invention
本发明提供一种无线通信系统中处理不同带宽信号传输的方法及装 置, 用以解决收发信机使用一套软件版本实现多种带宽切换需求的问题。  The invention provides a method and a device for processing different bandwidth signal transmissions in a wireless communication system, which are used to solve the problem that the transceiver uses a software version to achieve multiple bandwidth switching requirements.
本发明技术方案包括:  The technical solution of the present invention includes:
一种无线通信系统中处理不同带宽信号传输的方法, 包括:  A method for processing different bandwidth signal transmissions in a wireless communication system, comprising:
获取下行传输信号的带宽信息;  Obtaining bandwidth information of the downlink transmission signal;
根据下行传输信号的带宽信息, 生成与所述下行传输信号的带宽信息 相适应的系统釆样时钟及系统配置信息;  Generating, according to the bandwidth information of the downlink transmission signal, a system clock and system configuration information that is compatible with the bandwidth information of the downlink transmission signal;
根据生成的系统釆样时钟及系统配置信息, 选择相应的内插滤波结构, 对所述下行传输信号进行基带数据速率变换。  According to the generated system sampling clock and system configuration information, a corresponding interpolation filtering structure is selected, and the downlink transmission signal is subjected to baseband data rate conversion.
进一步地, 在对所述下行传输信号进行基带数据速率变换时, 该方法 进一步包括:  Further, when performing baseband data rate conversion on the downlink transmission signal, the method further includes:
不同带宽的下行传输信号在基带数据速率变换过程中共享内插滤波结 构。  The downlink transmission signals of different bandwidths share the interpolation filtering structure in the baseband data rate conversion process.
进一步地, 该方法进一步包括: 将经过基带数据速率变换后的下行传 输信号, 转换为中频信号, 再进一步转换为射频信号并发射。  Further, the method further includes: converting the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, and further converting into the radio frequency signal and transmitting.
进一步地, 在发射下行传输信号后, 该方法进一步包括:  Further, after transmitting the downlink transmission signal, the method further includes:
接收与所述下行传输信号相对应的上行传输信号, 将所述上行传输信 号转换为中频信号, 再进一步转换为基带信号, 并根据所述生成的系统釆 样时钟及系统配置信息, 选择相应的抽取滤波结构, 对转换为基带信号后 的上行传输信号进行基带数据速率变换并发送。  Receiving an uplink transmission signal corresponding to the downlink transmission signal, converting the uplink transmission signal into an intermediate frequency signal, further converting into a baseband signal, and selecting a corresponding according to the generated system sample clock and system configuration information. The filtering structure is selected, and the uplink transmission signal converted into the baseband signal is subjected to baseband data rate conversion and transmitted.
进一步地, 在对转换为基带信号后的上行传输信号进行基带数据速率 变换时, 该方法进一步包括: 不同带宽的上行传输信号在基带数据速率变换过程中共享抽取滤波结 构。 Further, when performing baseband data rate conversion on the uplink transmission signal after being converted into the baseband signal, the method further includes: The uplink transmission signals of different bandwidths share the decimation filtering structure in the baseband data rate conversion process.
一种无线通信系统中处理不同带宽信号传输的装置, 包括: 接口单元、 控制单元、 时钟处理单元、 以及数字处理单元; 其中,  An apparatus for processing different bandwidth signal transmissions in a wireless communication system, comprising: an interface unit, a control unit, a clock processing unit, and a digital processing unit;
接口单元, 用于获取下行传输信号的带宽信息;  An interface unit, configured to acquire bandwidth information of a downlink transmission signal;
控制单元, 用于根据下行传输信号的带宽信息, 生成系统配置信息, 并控制时钟处理单元输出与所述下行传输信号的带宽信息相适应的系统釆 样时钟;  a control unit, configured to generate system configuration information according to bandwidth information of the downlink transmission signal, and control the clock processing unit to output a system sample clock that is adapted to the bandwidth information of the downlink transmission signal;
时钟处理单元, 用于在控制单元的控制下, 生成与所述下行传输信号 的带宽信息相适应的系统釆样时钟;  a clock processing unit, configured to generate, by the control unit, a system sampling clock that is adapted to the bandwidth information of the downlink transmission signal;
数字处理单元, 用于根据生成的系统釆样时钟及所述系统配置信息, 选择相应的内插滤波结构, 对所述下行传输信号进行基带数据速率变换。  And a digital processing unit, configured to select a corresponding interpolation filtering structure according to the generated system sampling clock and the system configuration information, and perform baseband data rate conversion on the downlink transmission signal.
进一步地, 所述数字处理单元在对所述下行传输信号进行基带数据速 率变换过程中, 还用于将不同带宽的下行传输信号, 共享内插滤波结构。  Further, the digital processing unit is further configured to share the interpolation filtering structure of the downlink transmission signals of different bandwidths in the process of performing baseband data rate conversion on the downlink transmission signal.
进一步地, 该装置还包括:  Further, the device further includes:
中频射频单元, 用于将经过基带数据速率变换后的下行传输信号, 转 换为中频信号, 再进一步转换为射频信号并发射。  The IF radio unit is configured to convert the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, and further convert it into a radio frequency signal and transmit.
进一步地, 所述中频射频单元, 还用于接收与所述下行传输信号相对 应的上行传输信号, 将所述上行传输信号转换为中频信号, 再进一步转换 为基带信号后发送给数字处理单元; 所述数字处理单元, 还用于根据所述 生成的系统釆样时钟及系统配置信息, 选择相应的抽取滤波结构, 对所述 上行传输信号进行基带数据速率变换, 并通过接口单元发送出去。  Further, the intermediate frequency radio frequency unit is further configured to receive an uplink transmission signal corresponding to the downlink transmission signal, convert the uplink transmission signal into an intermediate frequency signal, and further convert the signal into a baseband signal, and then send the signal to the digital processing unit; The digital processing unit is further configured to: according to the generated system sample clock and system configuration information, select a corresponding decimation filtering structure, perform baseband data rate conversion on the uplink transmission signal, and send the data through the interface unit.
进一步地, 所述数字处理单元在对转换为基带信号后的上行传输信号 进行基带数据速率变换过程中, 还用于将不同带宽的上行传输信号, 共享 抽取滤波结构。 本发明有益效果如下: Further, the digital processing unit is further configured to share the decimation filtering structure of the uplink transmission signals of different bandwidths in the process of performing baseband data rate conversion on the uplink transmission signal after being converted into the baseband signal. The beneficial effects of the present invention are as follows:
本发明所述方法和装置通过使用一套软件版本实现多种带宽切换需 求, 与现有技术中的通过不同软件版本实现不同信号带宽传输技术相比, 节省了版本切换时间, 提高了版本管理效率以及可靠性, 同时提高了整机 开发、 生产效率, 降低开发成本。 附图说明  The method and the device of the present invention achieve multiple bandwidth switching requirements by using a set of software versions, which saves version switching time and improves version management efficiency compared with different signal bandwidth transmission technologies implemented by different software versions in the prior art. And reliability, while improving the development of the whole machine, production efficiency, and reducing development costs. DRAWINGS
图 1为本发明无线通信系统中处理不同带宽信号传输的方法的流程图; 图 2为本发明无线通信系统中处理不同带宽信号传输的装置的结构框 图。 具体实施方式  1 is a flow chart of a method for processing different bandwidth signal transmissions in a wireless communication system according to the present invention; and FIG. 2 is a structural block diagram of an apparatus for processing different bandwidth signal transmissions in a wireless communication system according to the present invention. detailed description
本发明的基本思想是: 通过切换系统釆样时钟以及相关的系统配置, 达到一套软件版本适用于多种带宽的目的, 特别是要求带宽不是最小带宽 整数倍的情形。  The basic idea of the present invention is: By switching the system sample clock and related system configuration, a set of software versions is applicable to a plurality of bandwidths, in particular, a situation in which the bandwidth is not an integer multiple of the minimum bandwidth.
下面将结合各个附图对本发明的具体实现过程予以进一步详细的说 明。  The specific implementation process of the present invention will be further described in detail below with reference to the accompanying drawings.
图 1 为本发明所述无线通信系统中处理不同带宽信号传输的方法的流 程图, 如图 1所示, 主要包括如下步骤:  FIG. 1 is a flow chart of a method for processing different bandwidth signal transmissions in a wireless communication system according to the present invention. As shown in FIG. 1, the method mainly includes the following steps:
步骤 S10、 获取下行传输信号的带宽信息。  Step S10: Acquire bandwidth information of the downlink transmission signal.
步骤 Sll、根据下行传输信号的带宽信息, 生成与所述带宽信息相适应 的系统釆样时钟及系统配置信息;  Step S11: Generate, according to bandwidth information of the downlink transmission signal, a system clock and system configuration information that is compatible with the bandwidth information.
这里, 所述系统配置信息包括: DAC、 以及 ADC配置信息等。  Here, the system configuration information includes: a DAC, and ADC configuration information and the like.
步骤 S12、根据生成的系统釆样时钟及所述系统配置信息,选择相应的 内插滤波结构, 对所述下行传输信号进行基带数据速率变换;  Step S12: Select a corresponding interpolation filtering structure according to the generated system sampling clock and the system configuration information, and perform baseband data rate conversion on the downlink transmission signal.
这里, 本步骤中, 不同带宽的下行传输信号在基带数据速率变换过程 中应尽可能地共享内插滤波结构, 从而节约逻辑资源。 Here, in this step, different bandwidth downlink transmission signals are in the baseband data rate conversion process. Interpolation filtering structures should be shared as much as possible to save logic resources.
步骤 S13、将经过基带数据速率变换后的下行传输信号,转换为中频信 号, 再进一步转换为射频信号并发射。  Step S13: Convert the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, further convert it into a radio frequency signal, and transmit.
步骤 S14、接收与所述下行传输信号相对应的上行传输信号,将所述上 行传输信号转换为中频信号, 再进一步转换为基带信号。  Step S14: Receive an uplink transmission signal corresponding to the downlink transmission signal, convert the uplink transmission signal into an intermediate frequency signal, and further convert the signal into a baseband signal.
步骤 S15、根据所述生成的系统釆样时钟及系统配置信息,选择相应的 抽取滤波结构, 对转换为基带信号后的上行传输信号进行基带数据速率变 换并发送;  Step S15: Select a corresponding decimation filtering structure according to the generated system sampling clock and system configuration information, and perform baseband data rate conversion and transmission on the uplink transmission signal converted to the baseband signal;
这里, 本步骤中, 不同带宽的上行传输信号在基带数据速率变换过程 中应尽可能地共享抽取滤波结构, 从而节约逻辑资源。  Here, in this step, the uplink transmission signals of different bandwidths should share the decimation filtering structure as much as possible in the baseband data rate conversion process, thereby saving logic resources.
相应于本发明上述方法, 本发明还提供了一种无线通信系统中处理不 同带宽信号传输的装置, 如图 2所示, 该装置主要包括: 接口单元 101、 数 字处理单元 102、 中频射频单元 103、控制单元 104以及时钟处理单元 105; 其中,  Corresponding to the above method of the present invention, the present invention further provides a device for processing different bandwidth signal transmissions in a wireless communication system. As shown in FIG. 2, the device mainly includes: an interface unit 101, a digital processing unit 102, and an intermediate frequency radio frequency unit 103. , the control unit 104 and the clock processing unit 105; wherein
接口单元 101 ,用于接收下行传输信号,获取下行传输信号的带宽信息, 还用于发送上行传输信号;  The interface unit 101 is configured to receive a downlink transmission signal, acquire bandwidth information of the downlink transmission signal, and further send the uplink transmission signal.
控制单元 104, 用于完成收发信单板软件加载,根据下行传输信号的带 宽信息, 生成系统配置信息, 并控制时钟处理单元 105输出与下行传输信 号的带宽信息相适应的系统釆样时钟; 还用于实时监控收发信单板各单元; 这里, 所述系统配置信息包括: DAC、 以及 ADC配置信息等;  The control unit 104 is configured to complete loading and receiving of the transceiver board software, generate system configuration information according to bandwidth information of the downlink transmission signal, and control the clock processing unit 105 to output a system sampling clock that is adapted to the bandwidth information of the downlink transmission signal; For real-time monitoring of each unit of the transceiver board; here, the system configuration information includes: a DAC, and ADC configuration information, etc.;
时钟处理单元 105 , 用于在控制单元 104的控制下, 生成与下行传输信 号的带宽信息相适应的系统釆样时钟;  The clock processing unit 105 is configured to generate, under the control of the control unit 104, a system sampling clock that is adapted to the bandwidth information of the downlink transmission signal;
数字处理单元 102,用于根据时钟处理单元 105生成的系统釆样时钟及 控制单元 104生成的系统配置信息, 选择相应的内插滤波结构, 对下行传 输信号进行基带数据速率变换; 还用于完成基带数据削峰、 及数字预失真 处理; 这里, 所述进行基带数据速率变换, 就是指: 进行上变频处理; 中频射频单元 103, 用于将经过基带数据速率变换后的下行传输信号, 转换为中频信号, 再进一步转换为射频信号并发射出去。 The digital processing unit 102 is configured to select a corresponding interpolation filtering structure according to the system sampling clock generated by the clock processing unit 105 and the system configuration information generated by the control unit 104, and perform baseband data rate conversion on the downlink transmission signal; Baseband data clipping, and digital predistortion Here, the performing baseband data rate conversion means: performing up-conversion processing; the intermediate frequency radio frequency unit 103 is configured to convert the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, and further convert the signal into a radio frequency signal. And launch it.
中频射频单元 103 ,还用于接收与所述下行传输信号相对应的上行传输 信号, 并将收到的上行传输信号转换为中频信号, 再进一步转换为基带信 号后, 发送给数字处理单元 102; 数字处理单元 102, 还用于根据在与上行 传输信号对应的下行传输信号传输时生成的系统釆样时钟及系统配置信 息, 选择相应的抽取滤波结构, 对上行传输信号进行基带数据速率变换, 并通过接口单元 101发送出去; 这里, 所述进行基带数据速率变换, 就是 指: 进行下变频处理。  The IF radio unit 103 is further configured to receive an uplink transmission signal corresponding to the downlink transmission signal, and convert the received uplink transmission signal into an intermediate frequency signal, and further convert the signal into a baseband signal, and then send the signal to the digital processing unit 102; The digital processing unit 102 is further configured to: according to the system sampling clock and system configuration information generated when the downlink transmission signal corresponding to the uplink transmission signal is transmitted, select a corresponding decimation filtering structure, perform baseband data rate conversion on the uplink transmission signal, and The transmission is performed by the interface unit 101. Here, the performing baseband data rate conversion means: performing down-conversion processing.
本发明上述装置中, 数字处理单元 102在实现基带数据速率变换过程 中, 需要合理考虑收发信单板系统釆样时钟, 尽可能做到不同带宽的信号 在速率变换过程中, 所使用的内插滤波结构或抽取滤波结构共享, 从而节 省逻辑资源。 在选择系统釆样时钟时, 在满足带通釆样定理的前提下, 需 要考虑时钟器件是否可以输出不同带宽信号相对应的不同的釆样时钟。  In the above apparatus of the present invention, in the process of implementing the baseband data rate conversion, the digital processing unit 102 needs to properly consider the clock of the transceiver board system, and as far as possible, the interpolation of the signals of different bandwidths in the rate conversion process. The filtering structure or the decimation filtering structure is shared, thereby saving logic resources. When selecting the system sampling clock, under the premise of satisfying the bandpass sampling theorem, it is necessary to consider whether the clock device can output different sampling clocks corresponding to different bandwidth signals.
本发明上述装置中, 数字处理单元 102、 控制单元 104、 以及时钟处理 单元 105 为实现重点部分, 下面分别对这三个单元的具体实现予以进一步 说明:  In the above apparatus of the present invention, the digital processing unit 102, the control unit 104, and the clock processing unit 105 are used to implement the key parts, and the specific implementations of the three units are further explained below:
数字处理单元 102  Digital processing unit 102
该单元完成基带数据速率变换, 在多速率信号处理过程中, 主要通过 内插和抽取来实现数据速率变换。 对上下行传输信号进行速率变换, 具体 下:  The unit performs baseband data rate conversion. In the multi-rate signal processing process, data rate conversion is mainly implemented by interpolation and extraction. Perform rate conversion on the uplink and downlink transmission signals, specifically as follows:
下行传输信号速率变换, 即: 内插滤波, 用于完成基带数据上变频。 内插以后, 信号与镜像之间距离加大, 滤波比较容易实现, 内插滤波结构 的选择, 需要考虑信号带宽及釆样速率等参数。 假设系统中有三种传输信 号, 带宽分别为 Bl、 B2、 B3 , 带宽为 B1的传输信号需要经过 12倍内插 后才能满足设计要求, 带宽为 B2的传输信号经过 8倍内插或 12倍内插均 能满足设计要求, 带宽为 B3的传输信号经过 24倍内插, 才可以满足设计 要求, 综合考虑其它因素, 在实现时, 可考虑共享滤波结构, 即: 带宽为 B2的传输信号选择 12倍内插, 带宽为 B3的传输信号通过选择器后, 再增 加一级内插滤波, 这样, 带宽为 Bl、 B2、 B3 的传输信号就可以完全共享 12倍内插滤波结构, 可以节省许多逻辑资源, 不需要更换同系列资源更大 的逻辑器件, 就可以实现不同带宽信号传输, 降低开发成本。 Downlink transmission signal rate conversion, namely: interpolation filtering, used to complete baseband data upconversion. After interpolation, the distance between the signal and the image is increased, and the filtering is relatively easy to implement. The selection of the interpolation filtering structure requires consideration of parameters such as signal bandwidth and sampling rate. Suppose there are three types of transmission signals in the system. No. The bandwidth is B1, B2, B3. The transmission signal with bandwidth B1 needs to be interpolated 12 times to meet the design requirements. The transmission signal with bandwidth B2 can meet the design requirements after 8 times interpolation or 12 times interpolation. The transmission signal with bandwidth B3 is interpolated by 24 times to meet the design requirements. Considering other factors, in the implementation, the shared filtering structure can be considered, that is, the transmission signal with bandwidth B2 is selected by 12 times interpolation, and the bandwidth is After the transmission signal of B3 passes through the selector, an additional interpolation filter is added. Thus, the transmission signal with bandwidths of Bl, B2, and B3 can completely share the 12-time interpolation filtering structure, which can save many logic resources and does not need to be replaced. A series of more resource-rich logic devices can realize different bandwidth signal transmission and reduce development costs.
上行信号速率变换, 即: 抽取滤波, 用于完成基带信号下变频。 抽取 滤波器设计与内插滤波器设计一样, 应尽可能使不同带宽信号传输能够共 享滤波器结构。  Uplink signal rate conversion, ie: decimation filtering, is used to complete the baseband signal down conversion. The decimation filter design is the same as the interpolation filter design. As much as possible, different bandwidth signal transmissions can share the filter structure.
控制单元 104  Control unit 104
该单元主要完成收发信机的监控和管理, 并负责与后台或上一级收发 信机进行信息交互。 在本发明所述装置中, 该单元处理流程如下:  The unit mainly completes the monitoring and management of the transceiver, and is responsible for information exchange with the background or upper-level transceiver. In the device of the present invention, the processing flow of the unit is as follows:
1 )收发信单板正常启动后, 完成嵌入式操作系统内核解压缩;  1) After the transceiver board is started normally, the embedded operating system kernel is decompressed;
2 ) 完成逻辑程序加载;  2) complete the logic program loading;
3 )完成与后台之间通信链路建立,获取下行传输信号的带宽信息参数; 4 ) 配置时钟处理单元 105 , 使时钟处理单元 105输出与下行传输信号 带宽相适应的系统釆样时钟。  3) completing the communication link establishment with the background to obtain the bandwidth information parameter of the downlink transmission signal; 4) configuring the clock processing unit 105 to cause the clock processing unit 105 to output a system sampling clock that is adapted to the bandwidth of the downlink transmission signal.
时钟处理单元 105  Clock processing unit 105
该单元主要完成系统釆样时钟生成。 该单元主要功能如下:  This unit mainly completes the system clock generation. The main functions of this unit are as follows:
在控制单元 104 的控制下, 产生与下行传输信号带宽相适应的系统釆 样时钟, 完成不同带宽信号对应的不同系统时钟切换; 并根据后台的配置 信息, 产生中频射频单元 103需要的工作时钟; 实时检测本单元运行状态, 上报控制单元 104。 本发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在 内。 Under the control of the control unit 104, a system sampling clock corresponding to the bandwidth of the downlink transmission signal is generated, and different system clock switching corresponding to different bandwidth signals is completed; and an operating clock required by the intermediate frequency radio frequency unit 103 is generated according to the configuration information of the background; The running status of the unit is detected in real time and reported to the control unit 104. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

权利要求书 Claim
1、 一种无线通信系统中处理不同带宽信号传输的方法, 其特征在于, 该方法包括:  A method for processing different bandwidth signal transmissions in a wireless communication system, the method comprising:
获取下行传输信号的带宽信息;  Obtaining bandwidth information of the downlink transmission signal;
根据下行传输信号的带宽信息, 生成与所述下行传输信号的带宽信息 相适应的系统釆样时钟及系统配置信息;  Generating, according to the bandwidth information of the downlink transmission signal, a system clock and system configuration information that is compatible with the bandwidth information of the downlink transmission signal;
根据生成的系统釆样时钟及系统配置信息, 选择相应的内插滤波结构, 对所述下行传输信号进行基带数据速率变换。  According to the generated system sampling clock and system configuration information, a corresponding interpolation filtering structure is selected, and the downlink transmission signal is subjected to baseband data rate conversion.
2、 根据权利要求 1所述的方法, 其特征在于, 在对所述下行传输信号 进行基带数据速率变换时, 该方法进一步包括:  The method according to claim 1, wherein when performing the baseband data rate conversion on the downlink transmission signal, the method further includes:
不同带宽的下行传输信号在基带数据速率变换过程中共享内插滤波结 构。  The downlink transmission signals of different bandwidths share the interpolation filtering structure in the baseband data rate conversion process.
3、根据权利要求 1或 2所述的方法,其特征在于,该方法进一步包括: 将经过基带数据速率变换后的下行传输信号, 转换为中频信号, 再进 一步转换为射频信号并发射。  The method according to claim 1 or 2, wherein the method further comprises: converting the downlink transmission signal converted by the baseband data rate into an intermediate frequency signal, and further converting into a radio frequency signal and transmitting.
4、根据权利要求 3所述的方法, 其特征在于,在发射下行传输信号后, 该方法进一步包括:  The method according to claim 3, wherein after transmitting the downlink transmission signal, the method further comprises:
接收与所述下行传输信号相对应的上行传输信号, 将所述上行传输信 号转换为中频信号, 再进一步转换为基带信号, 并根据所述生成的系统釆 样时钟及系统配置信息, 选择相应的抽取滤波结构, 对转换为基带信号后 的上行传输信号进行基带数据速率变换并发送。  Receiving an uplink transmission signal corresponding to the downlink transmission signal, converting the uplink transmission signal into an intermediate frequency signal, further converting into a baseband signal, and selecting a corresponding according to the generated system sample clock and system configuration information. The filtering structure is selected, and the uplink transmission signal converted into the baseband signal is subjected to baseband data rate conversion and transmitted.
5、 根据权利要求 4所述的方法, 其特征在于, 在对转换为基带信号后 的上行传输信号进行基带数据速率变换时, 该方法进一步包括:  The method according to claim 4, wherein, when performing baseband data rate conversion on the uplink transmission signal after being converted into the baseband signal, the method further includes:
不同带宽的上行传输信号在基带数据速率变换过程中共享抽取滤波结 构。 The uplink transmission signals of different bandwidths share the decimation filtering structure in the baseband data rate conversion process.
6、 一种无线通信系统中处理不同带宽信号传输的装置, 其特征在于, 该装置包括: 接口单元、 控制单元、 时钟处理单元、 以及数字处理单元; 其中, 6. A device for processing different bandwidth signal transmissions in a wireless communication system, the device comprising: an interface unit, a control unit, a clock processing unit, and a digital processing unit;
接口单元, 用于获取下行传输信号的带宽信息;  An interface unit, configured to acquire bandwidth information of a downlink transmission signal;
控制单元, 用于根据下行传输信号的带宽信息, 生成系统配置信息, 并控制时钟处理单元输出与所述下行传输信号的带宽信息相适应的系统釆 样时钟;  a control unit, configured to generate system configuration information according to bandwidth information of the downlink transmission signal, and control the clock processing unit to output a system sample clock that is adapted to the bandwidth information of the downlink transmission signal;
时钟处理单元, 用于在控制单元的控制下, 生成与所述下行传输信号 的带宽信息相适应的系统釆样时钟;  a clock processing unit, configured to generate, by the control unit, a system sampling clock that is adapted to the bandwidth information of the downlink transmission signal;
数字处理单元, 用于根据生成的系统釆样时钟及系统配置信息, 选择 相应的内插滤波结构, 对所述下行传输信号进行基带数据速率变换。  The digital processing unit is configured to select a corresponding interpolation filtering structure according to the generated system sampling clock and system configuration information, and perform baseband data rate conversion on the downlink transmission signal.
7、 根据权利要求 6所述的装置, 其特征在于, 所述数字处理单元, 在 对所述下行传输信号进行基带数据速率变换过程中, 还用于将不同带宽的 下行传输信号, 共享内插滤波结构。  The device according to claim 6, wherein the digital processing unit is further configured to interpolate downlink transmission signals of different bandwidths during baseband data rate conversion on the downlink transmission signal. Filter structure.
8、 根据权利要求 6或 7所述的装置, 其特征在于, 该装置还包括: 中频射频单元, 用于将经过基带数据速率变换后的下行传输信号, 转 换为中频信号, 再进一步转换为射频信号并发射。  The device according to claim 6 or 7, wherein the device further comprises: an intermediate frequency radio frequency unit, configured to convert the downlink transmission signal after the baseband data rate conversion into an intermediate frequency signal, and further convert the signal into an RF Signal and transmit.
9、 根据权利要求 8所述的装置, 其特征在于,  9. Apparatus according to claim 8 wherein:
所述中频射频单元, 还用于接收与所述下行传输信号相对应的上行传 输信号, 将所述上行传输信号转换为中频信号, 再进一步转换为基带信号 后发送给数字处理单元;  The intermediate frequency radio frequency unit is further configured to receive an uplink transmission signal corresponding to the downlink transmission signal, convert the uplink transmission signal into an intermediate frequency signal, and further convert the signal into a baseband signal, and then send the signal to the digital processing unit;
所述数字处理单元, 还用于根据所述生成的系统釆样时钟及系统配置 信息, 选择相应的抽取滤波结构, 对转换为基带信号后的上行传输信号进 行基带数据速率变换, 并通过接口单元发送出去。  The digital processing unit is further configured to: according to the generated system sample clock and system configuration information, select a corresponding decimation filtering structure, perform baseband data rate conversion on the uplink transmission signal converted to the baseband signal, and pass the interface unit Send it out.
10、 根据权利要求 9所述的装置, 其特征在于, 所述数字处理单元, 在对转换为基带信号后的上行传输信号进行基带数据速率变换过程中 , 还 用于将不同带宽的上行传输信号, 共享抽取滤波结构。 10. The apparatus according to claim 9, wherein said digital processing unit, In the process of performing baseband data rate conversion on the uplink transmission signal converted to the baseband signal, the uplink transmission signal of different bandwidths is also used to share the decimation filtering structure.
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