WO2012163163A1 - 降低xDSL用户板能耗的方法、装置及系统 - Google Patents

降低xDSL用户板能耗的方法、装置及系统 Download PDF

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Publication number
WO2012163163A1
WO2012163163A1 PCT/CN2012/073165 CN2012073165W WO2012163163A1 WO 2012163163 A1 WO2012163163 A1 WO 2012163163A1 CN 2012073165 W CN2012073165 W CN 2012073165W WO 2012163163 A1 WO2012163163 A1 WO 2012163163A1
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WIPO (PCT)
Prior art keywords
port
downlink
line
maximum
user
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PCT/CN2012/073165
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English (en)
French (fr)
Inventor
陈亮
李晓栋
潘丰斌
杨雪仁
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP12792012.2A priority Critical patent/EP2675145B1/en
Publication of WO2012163163A1 publication Critical patent/WO2012163163A1/zh
Priority to US14/082,395 priority patent/US9065887B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/005Interface circuits for subscriber lines
    • H04M3/007Access interface units for simultaneous transmission of speech and data, e.g. digital subscriber line [DSL] access interface units
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Arrangements for supervision, monitoring or testing
    • H04M3/2209Arrangements for supervision, monitoring or testing for lines also used for data transmission
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Arrangements for supervision, monitoring or testing
    • H04M3/26Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/32Reducing cross-talk, e.g. by compensating

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, device and system for reducing energy consumption of an xDSL subscriber board.
  • Digital Subscriber Line (xDSL, Digital Subscriber Lines) technology is a widely used broadband access technology that supports the Internet access needs of hundreds of millions of users around the world.
  • the number of xDSL access devices is huge, and the annual power consumption is also quite large. Not only does the operator have to pay huge operating costs every year, but it also brings a large amount of carbon dioxide emissions, which aggravates the greenhouse effect and environmental degradation.
  • xDSL subscriber board also called a single board or line card or a Line Card
  • Method 1 Limit the downlink maximum noise margin in the line and channel parameters of the user port binding template to ensure the downlink signal-to-noise ratio margin in the line connection parameters when the port is in the Showtime state.
  • Noise Ratio Margin does not exceed this limit value, thereby reducing the transmission power of the user port line, reducing the power consumption of the line driver (LD), and finally reducing the power consumption of the xDSL user board.
  • Method 2 According to the output power of the user port line driver, determine the minimum undistorted power supply voltage of the line driver at this time, thereby controlling the output of the line driver power supply module so that it just meets the power transmission under the power, and the line driver can be Reduced consumption.
  • the method 1 can achieve the reduction of the energy consumption of the xDSL user board, the reduction of the transmission power of the method is very limited, and the power transmission efficiency of the line driver is low.
  • many modems on the network cannot support the Max SNRM limitation feature, and there is interworking. problem.
  • the second method can reduce the energy consumption of the xDSL user board, it only passively optimizes the line driver power supply voltage according to the output power, so that the power consumption reduction is limited.
  • the power supply needs to meet the power transmission requirements of all line drivers at the same time, it is difficult to achieve a reduction in the supply voltage, and it is not effective for energy saving.
  • Embodiments of the present invention provide a method, apparatus, and system for reducing power consumption of an xDSL subscriber board.
  • a method for reducing energy consumption of an xDSL user board characterized by comprising:
  • the downlink SNRM Determining whether the downlink SNRM is greater than a predetermined value. If yes, reducing the downlink maximum nominal total transmission power value in the current template bound to the port to reduce the excess SNRM. Otherwise, configuring the downlink maximum nominal total transmission of the template bound to the port.
  • the power is the downlink transmit power in the current port line connection parameter; the minimum undistorted power required by the line driver corresponding to the line driver corresponding to the current binding template configuration is calculated according to the downlink maximum nominal total transmission power and the transmission mode. Voltage, and compare the minimum undistorted supply voltage values to find the maximum value;
  • a digital subscriber line access multiplexer DSLAM includes: a power module for powering a line driver on an xDSL subscriber board;
  • the method further comprising: an information collecting and controlling unit, configured to collect port numbering status on the xDSL user board, and provide a number port The maximum service bandwidth and the specified transmission mode and the line connection parameters of the port in the Showtime state, and optimize the transmission power of the user port line according to the information, and control the output voltage of the line driver power supply module to output The voltage is the minimum undistorted supply voltage required to meet the power transfer of all line drivers on the subscriber board.
  • An xDSL system comprising: a user computer, a digital subscriber line modem, a network management device, and a digital subscriber line access multiplexer.
  • the user computer is connected to the digital subscriber line access multiplexer through the digital subscriber line modem, and is characterized in that: the network management equipment collects the port number of the xDSL subscriber board, the maximum service bandwidth and the transmission mode required for the number port, and The line connection parameter of the port in the Showtime state, the digital subscriber line access multiplexer optimizes the transmission power of the numbered subscriber port line according to the information collected by the network management equipment, and controls the output voltage of the line driver power supply module to The output voltage is the minimum undistorted supply voltage required to meet the power transfer of all line drivers on the subscriber board.
  • the method, device and system for reducing the energy consumption of the xDSL user board ensure the service bandwidth and the line shield of the user, and according to the maximum supported service bandwidth and transmission mode of the user port on the xDSL user board. And the line connection parameters, the transmission power of the user port line on the xDSL user board is optimized, and the dynamic adjustment of the line driver power supply voltage can greatly reduce the energy consumption of the xDSL user board.
  • FIG. 1 is a schematic diagram of a system architecture of the present invention
  • FIG. 2 is a schematic structural diagram of a DSLAM device according to the present invention.
  • Figure 3 is a flow chart of the method of the present invention.
  • FIG. 4 is a schematic diagram of a method for calculating a minimum undistorted supply voltage according to the present invention.
  • FIG. 5 is a flow chart of another embodiment of the method of the present invention. detailed description
  • the network system of the present invention includes: a user computer 12, an access terminal 14, and a central office device 16.
  • the user computer 12 is connected to the central office device 16 through the access terminal 14, and can send a message to the local device 16, and can receive the message sent by the central office device 16.
  • the access terminal 14 is typically a Digital Subscriber Line Modem (DSL Modem), and the central office device 16 can be a Digital Subscriber Line Access Multiplexer (DSLAM) or other type of access device.
  • DSL Modem Digital Subscriber Line Modem
  • DSLAM Digital Subscriber Line Access Multiplexer
  • the DSLAM device of the present invention includes: an information collecting and controlling unit, a power module, a chip, and a plurality of line drivers.
  • the information collection and control unit is responsible for collecting which ports on the xDSL subscriber board are numbered ports, which are unassigned ports, and the maximum service bandwidth and the specified transmission mode required for the port number port, and the port is in the Showtime state. According to the information, the line connection parameters are optimized, and the output power of the line port of the line driver is optimized, and the output voltage of the line driver power supply module is controlled so that the output voltage is sufficient for all line drivers on the user board to perform power transmission.
  • the minimum non-chip is required for digital signal processing and digital-to-analog conversion, etc.
  • the line driver is responsible for power amplification of the analog signal provided by the chip.
  • the information collection and control unit can be set in addition to the DSLAM device. On other network management devices.
  • Step 301 The information collection and control module obtains the maximum downlink service bandwidth provided by the user port on the current xDSL user board.
  • Step 302 Configure, according to the maximum downlink service bandwidth of each user port, a predetermined maximum downlink SNRM, and a determined transmission mode, configure line and channel parameters of the template bound to each of the numbered user ports.
  • the specific configuration method is as follows: The maximum downlink SNRM is configured as the predetermined maximum downlink SNRM, and the maximum downlink data rate is configured as the maximum downlink service bandwidth that the user port needs to provide to the user.
  • the transmission mode is determined by the operator according to the current application scenario and the maximum supported data rate of the port. From the line configuration. The downlink SNRM and transmit power in the line connection parameters of each of the assigned user ports are then collected.
  • Step 303 Determine whether the downlink SNRM exceeds a predetermined maximum downlink SNRM, and if yes, execute step 304A, otherwise perform step 304B.
  • Step 304A reducing the downlink maximum nominal total transmission power in the line port line and the channel parameter (the minimum value of the downlink maximum nominal total transmission power may be assigned to OdBm), so as to reduce the SNRM of the excess portion, and the SNRM of the excess is passed through the downlink.
  • the SNRM is obtained by subtracting the predetermined maximum downlink SNRM.
  • Step 304B Configure a downlink maximum nominal total transmission power in the line and channel parameters of the template bound to the port according to the downlink sending power in the current port line connection parameter.
  • Step 305 After optimizing the line and channel parameters of the template bound to the current numbered user port, according to the line and channel parameters of the template bound to each of the numbered ports on the current xDSL user board, the maximum downlink total transmission is performed. Power and transmission mode, calculate the minimum undistorted supply voltage required by the line driver corresponding to each port under the current binding template configuration, and compare the minimum undistorted supply voltage values to find the maximum value.
  • the calculation process of the minimum undistorted power supply voltage is as follows: First, the user will be The downlink maximum nominal total transmission power configuration parameter PRL (dBm) of the port in the current transmission mode is converted into the power PRL(W) on the load impedance RL:
  • RL is the line characteristic impedance, default lOOohm
  • the rms current IRL(RMS) at the load impedance RL is:
  • IRL(RMS) VRL(RMS)/RL
  • Vpkl VRL(RMS) * PAR ;
  • PAR is called the signal peak-to-average ratio.
  • the ratio of peak voltage to average voltage is different.
  • the signal peak-to-average ratio is different in 17a transmission mode (one of the transmission modes defined in ITU-T standard) and ADSL transmission mode.
  • Vpk2 Vpkl*l/n
  • the calculation method of this embodiment ignores the power loss ratio brought by the transformer
  • Vpk3 Vpk2 + 2*RS*IRL(RMS)*n*PAR ;
  • Step 306 Control the line driver power supply module output voltage value as the maximum value.
  • Step 308 the optimization ends.
  • step 306 the following steps may be further performed after step 306:
  • Step 3071 The information collection and control module queries the xDSL user board for a new numbered user port in real time. If yes, step 3072 is performed, and if not, step 308 is performed.
  • Step 3072 Calculate a maximum downlink undistorted transmission power of the port in the current situation according to a transmission mode adopted by the port and a power supply voltage output by the current line driver power supply module, and then provide the maximum to the user in combination with the new release port.
  • the downlink service bandwidth, the predetermined maximum downlink SNRM obtains the line and channel parameters of the template bound to the port, and performs the first initialization.
  • Step 3073 After the port enters the Showtime state according to the template, it is determined whether the downlink net data rate in the port line connection parameter can meet the maximum service bandwidth required by the port, and whether the downlink SNRM is greater than a predetermined maximum downlink SNRM. If yes, go to step 3074, otherwise go to step 3075.
  • Step 3074 the system considers that the maximum downlink nominal total transmission power of the line and channel parameters of the template bound to the port can meet the requirement of the port, and there is still a certain space to continue to decrease, and the line driver power supply does not need to be adjusted at this time. And it is also possible to reduce the SNRM of the excess portion by reducing the maximum downlink nominal total transmission power in the port line and channel parameters, and then performing step 308.
  • Step 3075 Calculate a minimum undistorted power supply voltage required by the port line driver according to a transmission mode configured in a line and channel parameter of the port binding template, and a maximum downlink transmission power corresponding to the transmission mode, and The line driver power supply module outputs the voltage value, and then proceeds to step 3076.
  • Step 3076 Modify the maximum downlink total transmission power in the port binding template to be the maximum line transmission power corresponding to the transmission mode, and perform the second initialization, and then perform step 3077.
  • Step 3077 Collect the current downlink SNRM and the transmit power of the port line connection parameter, and determine whether the downlink SNRM is greater than a predetermined maximum downlink SNRM. If yes, go to step 3078. Otherwise, go to step 3079.
  • Step 3078 Reduce the downlink maximum nominal total transmission power configuration value in the line and channel parameters of the template bound to the port, so as to reduce the SNRM of the excess part.
  • the excess portion of the SNRM can be obtained by subtracting the predetermined maximum SNRM from the downlink SNRM in the line connection parameters.
  • Step 3079 Modify the downlink maximum nominal total transmission power in the line and channel parameters of the template bound to the port according to the downlink transmission power in the port line connection parameter.
  • Step 3080 Calculate a minimum undistorted power supply voltage required by each LD of the user port in the current binding template configuration according to the downlink maximum nominal total transmission power and transmission mode of the user port on the current user board, and then perform voltage comparison.
  • the maximum value is output, and the output voltage value of the LD power supply module is controlled to be the maximum value, and then step 308 is performed.
  • Step 308 the optimization ends.
  • the user port line is sent to the xDSL user board.
  • Power optimization, and dynamic adjustment of the line driver supply voltage, to minimize the energy consumption of the xDSL user board It can be accomplished by a computer program instructing associated hardware, which can be stored in a computer readable storage medium, which, when executed, can include the flow of an embodiment of the methods described above.
  • the storage medium may be a magnetic disk, an optical disk, or the like.
  • the invention discloses a method for reducing energy consumption of an xDSL user board, comprising: obtaining a maximum downlink service bandwidth provided by a user port of a numbering user, a downlink signal to noise ratio margin in a user port line connection parameter, and a binding of the user port.
  • Determining the transmission mode information in the line template determining whether the downlink signal to noise ratio margin is greater than a predetermined value, and if so, reducing the downlink maximum nominal total transmission power, otherwise configuring the downlink maximum nominal total transmission power to be in the current port line connection parameter Downlink transmission power; Calculate the minimum undistorted supply voltage required by the line driver corresponding to the line driver corresponding to the current binding template configuration according to the downlink maximum nominal total transmission power and transmission mode, and perform each minimum undistorted supply voltage value Contrast, find the maximum value; control the line driver power supply module output voltage to this maximum.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

本发明公开了一种降低xDSL用户板能耗的方法,包括:获取放号用户端口提供给用户的最大下行业务带宽、用户端口线路连接参数中的下行信噪比余量以及该用户端口所绑定线路模板中的传输模式信息;判断下行信噪比余量是否大于预定值,如果是则减少下行最大标称总计传输功率,否则配置下行最大标称总计传输功率为当前端口线路连接参数中的下行传输功率;根据下行最大标称总计传输功率和传输模式计算出各放号用户端口在当前绑定模板配置下所对应线路驱动器需要的最小不失真供电电压,并进行各最小不失真供电电压值对比,找出最大值;控制线路驱动器供电电源模块输出电压为该最大值。

Description

降低 XDSL用户板能耗的方法、 装置及系统 本申请要求于 2011年 8月 19日提交中国专利局、 申请号为 201110239942.1, 发明名称为"降低 xDSL用户板能耗的方法、 装置及系统"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
本发明涉及通信技术领域, 尤其涉及一种降低 xDSL用户板能耗的方法、 装 置及系统。
背景技术
数字用户线 ( xDSL, Digital Subscriber Lines )技术是当前广泛应用的宽带 接入技术, 支撑着全球几亿用户的上网需求。 xDSL接入设备数量庞大, 每年所 耗电量也是相当巨大, 不仅运营商每年要为此付出巨大的运营成本, 同时也带 来了二氧化碳的大量排放, 加剧温室效应和环境恶化。
目前, 针对 xDSL用户板(也称单板或线卡或 Line Card ) 上用户端口线路发 送功率的优化有以下两种方法:
方法一: 通过对用户端口绑定模板的线路和信道参数中下行最大噪声余量 进行限制, 确保端口在 Showtime状态时线路连接参数中下行信噪比余量( Signal
Noise Ratio Margin, SNRM )不超过该限制值, 从而降低用户端口线路发送功率, 实现线路驱动器 (Line Driver, LD ) 功耗的降低, 最终达到 xDSL用户板能耗的 降低。
方法二: 根据用户端口线路驱动器的输出功率, 确定此时线路驱动器的最 小不失真供电电压, 从而控制该线路驱动器供电电源模块的输出, 使其刚好满 足该功率下的功率传输, 达到线路驱动器能耗降低的目的。
发明人发现现有技术至少存在如下问题: ( 1 )方法一虽然能够达到 xDSL用户板能耗的降低, 但该方法发送功率的降 低幅度非常有限, 线路驱动器功率传输效率较低, 另外现网上很多 Modem还无 法支持 Max SNRM限制特性, 存在互通问题。
(2)方法二虽然能够降低 xDSL用户板的能耗, 但是只是被动的根据输出功率 来进行线路驱动器供电电压的优化, 从而能耗降低幅度有限。 同时在多线路驱 动器同时采用一个供电电源的情况下, 供电电源需要同时满足所有线路驱动器 功率传输的需求, 则很难实现供电电压的降低, 无法起到很好节能的效果。 发明内容
本发明的目的至于提供一种降低 xDSL用户板能耗的方法、 装置及系统。 本发明的实施例提供一种降低 xDSL用户板能耗的方法、 装置及系统。 一种降低 xDSL用户板能耗的方法, 其特征在于, 包括:
获取放号用户端口提供给用户的最大下行业务带宽、 用户端口线路连接参 数中的下行信噪比余量 SNRM以及该用户端口所绑定线路模板中的传输模式信 息, 对放号用户端口所绑定模板的线路和信道参数进行配置;
判断下行 SNRM是否大于预定值 如果是则减少当前该端口所绑定模板中的 下行最大标称总计传输功率值以减少多出的 SNRM,否则配置该端口所绑定模板 的下行最大标称总计传输功率为当前端口线路连接参数中的下行发送功率; 根据所述下行最大标称总计传输功率和传输模式计算出各放号用户端口在 当前绑定模板配置下所对应线路驱动器需要的最小不失真供电电压, 并进行各 最小不失真供电电压值对比, 找出最大值;
控制线路驱动器供电电源模块输出电压为所述的最大值。
一种数字用户线接入复用器 DSLAM, 包括: 电源模块, 用于给 xDSL用户板上的线路驱动器进行供电;
套片, 用于数字信号处理以及数 /模转换等;
多个线路驱动器, 用于对套片提供过来的模拟信号进行功率放大; 其特征在于, 还包括: 信息收集和控制单元, 用于收集 xDSL用户板上端口 放号情况、 放号端口所需提供的最大业务带宽和所定的传输模式以及该端口在 Showtime状态时的线路连接参数 , 并根据这些信息对放号用户端口线路发送功 率进行优化, 同时控制线路驱动器供电电源模块的输出电压, 使其输出电压为 满足该用户板上所有线路驱动器在进行功率传输时所需要的最小不失真供电电 压。
一种 xDSL系统, 其特征在于, 包括: 用户计算机、 数字用户线调制解调器、 网管设备以及数字用户线接入复用器。 其中, 用户计算机通过数字用户线调制 解调器与数字用户线接入复用器连接, 其特征在于: 网管设备收集 xDSL用户板 上端口放号情况、 放号端口所需提供的最大业务带宽和传输模式以及该端口在 Showtime状态时的线路连接参数, 数字用户线接入复用器根据网管设备所收集 的信息对放号用户端口线路发送功率进行优化, 同时控制线路驱动器供电电源 模块的输出电压, 使其输出电压为满足该用户板上所有线路驱动器在进行功率 传输时所需要的最小不失真供电电压。
本发明实施例提供的降低 xDSL用户板能耗的方法、 装置及系统, 在保证用 户业务带宽需求和线路盾量的同时, 根据 xDSL用户板上所放号用户端口最大支 持的业务带宽、 传输模式和线路连接参数, 对 xDSL用户板上放号用户端口线路 发送功率优^ ^并配合线路驱动器供电电压的动态调整, 能够大幅度的降低 xDSL 用户板能耗。 附图说明
图 1为本发明的系统架构示意图;
图 2为本发明的 DSLAM设备的结构示意图;
图 3为本发明的方法流程图;
图 4为本发明的最小不失真供电电压的计算方法示意图;
图 5为本发明的方法的另外一个实施例的流程图。 具体实施方式
如图 1所示, 本发明的网络系统, 包括: 用户计算机 12、 接入终端 14以及局 端设备 16。 其中, 用户计算机 12通过接入终端 14与局端设备 16连接, 可以向局 端设备 16发送报文, 同时可以接收局端设备 16发出的报文。 接入终端 14通常是 数字用户线调制解调器(DSL Modem ), 局端设备 16可以是数字用户线接入复用 器( DSLAM ), 也可以是其它类型的接入设备。
如图 2所示, 本发明的 DSLAM设备包括: 信息收集和控制单元、 电源模块、 套片和多个线路驱动器。
其中, 信息收集和控制单元负责收集 xDSL用户板上哪些是放号端口, 哪些 是未放号端口, 以及放号端口所需提供的最大业务带宽和所定的传输模式, 还 有该端口在 Showtime状态时的线路连接参数, 并根据这些信息对放号用户端口 线路发送功率进行优化, 同时控制线路驱动器供电电源模块的输出电压, 使其 输出电压为满足该用户板上所有线路驱动器在进行功率传输时所需要的最小不 套片负责数字信号处理以及数 /模转换等, 线路驱动器负责对套片提供过来的模 拟信号进行功率放大。
当然, 信息收集和控制单元除了设置在 DSLAM设备中以外, 还可以设置在 其它网管设备上。
如图 3所示, 本发明的 DSLAM设备降低 xDSL用户板能耗的具体过程如下: 步骤 301,通过信息收集和控制模块获取当前 xDSL用户板上放号用户端口提 供给用户的最大下行业务带宽。
步骤 302, 根据各用户端口的该最大下行业务带宽, 预定的最大下行 SNRM 和确定的传输模式, 对各放号用户端口所绑定模板的线路和信道参数进行配 置。 具体配置方法为: 配置最大下行 SNRM为该预定最大下行 SNRM, 配置最大 下行数据率为该用户端口需要提供给用户的最大下行业务带宽, 传输模式由运 营商根据当前应用场景和端口最大支持数据率来自行配置。 然后收集各放号用 户端口的线路连接参数中的下行 SNRM和发送功率。
步骤 303, 判断下行 SNRM是否超过预定的最大下行 SNRM, 如果是, 则执 行步骤 304A, 否则执行步骤 304B。
步骤 304A, 减少线路端口线路和信道参数中下行最大标称总计传输功率 (该 下行最大标称总计传输功率最小值可配值为 OdBm), 使其減少多出部分的 SNRM 多出的 SNRM通过下行 SNRM减去预定的最大下行 SNRM获得。
步骤 304B , 根据当前端口线路连接参数中的下行发送功率配置该端口所绑 定模板的线路和信道参数中下行最大标称总计传输功率。
步骤 305 , 对所有当前放号用户端口所绑定模板的线路和信道参数进行优化 后, 根据当前 xDSL用户板上所有放号端口各自所绑定模板的线路和信道参数中 下行最大标称总计传输功率和传输模式, 计算出所有放号用户端口在当前绑定 模板配置下, 各端口所对应线路驱动器需要的最小不失真供电电压, 同时进行 各最小不失真供电电压值对比, 找出最大值。
请结合参照图 4所示, 最小不失真供电电压的计算过程如下: 首先, 将用户 端口在当前传输模式下的下行最大标称总计传输功率配置参数 PRL(dBm)换算 成负载阻抗 RL上的功率 PRL(W):
Figure imgf000008_0001
之后, 计算在负载阻抗 RL上的功率 PRL(W)的情况下 , 负载阻抗 RL上的均 方根电压 VRL(RMS)为:
Figure imgf000008_0002
备注: RL为线路特性阻抗, 默认 lOOohm;
之后, 计算在负载阻抗 RL上的均方根电压 VRL(RMS)的情况下, 负载阻抗 RL上的均方根电流 IRL(RMS)为:
IRL(RMS) = VRL(RMS)/RL;
之后, 计算负载阻抗 RL上的信号峰值电压 Vpkl为:
Vpkl = VRL(RMS) * PAR ;
备注: PAR全称为信号峰均比, 既峰值电压同均值电压的比值, 17a传输模 式 (ITU-T标准中定义的传输模式之一) 和 ADSL传输模式下的信号峰均比是不 一样的。
之后, 计算变压器 T次级的信号峰值电压 Vpk2为:
Vpk2= Vpkl*l/n;
此实施例计算方法忽略变压器所带来的功率损耗比;
之后, 计算线路驱动器输出信号的峰值电压 Vpk3为:
Vpk3 = Vpk2 + 2*RS*IRL(RMS)*n*PAR ;
则此时线路驱动器的供电电压为:
(V+ - V-) pk-= Vpk3 +(1.5*2) ; 其中, 1.5为线路驱动器静空电压值, 单位为伏特。
步骤 306, 控制线路驱动器供电电源模块输出电压值为该最大值。
步骤 308, 优化结束。
另外, 如图 5所示, 根据实际需要, 可以在步骤 306之后进一步执行以下步 骤:
步骤 3071 , 通过信息收集和控制模块实时查询 xDSL用户板上是否有新放号 用户端口。 如果有则执行步骤 3072, 如果没有则执行步骤 308。
步骤 3072, 根据该端口采用的传输模式和当前线路驱动器供电电源模块输 出的供电电压, 计算出该端口在当前情况下的最大下行不失真传输功率, 然后 结合该新放号端口提供给用户的最大下行业务带宽, 预定的最大下行 SNRM, 得 到该端口所绑定模板的线路和信道参数, 并进行第一次初始化。
步骤 3073 , 当该端口按照上述模板进入 Showtime状态后, 判断端口线路连 接参数中下行净数据率是否能够满足该端口所需支持的最大业务带宽, 并且下 行 SNRM是否大于预定的最大下行 SNRM。 如果是则执行步骤 3074, 否则执行步 骤 3075。
步骤 3074 , 系统认为此时该端口所绑定模板的线路和信道参数中下行最大 标称总计传输功率能够满足该端口需求, 同时还存在一定的继续降低空间, 则 此时线路驱动器供电电源无需调整, 而且还可以通过减少端口线路和信道参数 中下行最大标称总计传输功率, 使其减少多出部分的 SNRM, 然后执行步骤 308。
步骤 3075, 根据该端口绑定模板的线路和信道参数中配置的传输模式, 以 及该传输模式所对应的最大下行线路发送功率, 计算出该端口线路驱动器所需 最小不失真供电电压, 并使其线路驱动器供电电源模块输出该电压值, 然后执 行步骤 3076。 步骤 3076, 修改端口绑定模板中下行最大标称总计传输功率为该传输模式 所对应的最大线路发送功率, 并进行第二次初始化, 然后执行步骤 3077。
步骤 3077, 收集当前该端口线路连接参数中下行 SNRM和发送功率, 判断下 行 SNRM是否大于预定的最大下行 SNRM, 如果是则执行步骤 3078, 否则执行步 骤 3079。
步骤 3078, 減少该端口所绑定模板的线路和信道参数中下行最大标称总计 传输功率配置值, 使其减少多余部分的 SNRM。 多余部分的 SNRM可以通过线路 连接参数中下行 SNRM减去预定最大 SNRM获得。
步骤 3079, 根据端口线路连接参数中下行线路发送功率, 修改该端口所绑 定模板的线路和信道参数中下行最大标称总计传输功率。
步骤 3080, 根据当前用户板上放号用户端口的下行最大标称总计传输功率 和传输模式, 计算用户端口在当前绑定模板配置下各 LD需要的最小不失真供电 电压, 然后进行电压对比, 找出最大值, 并控制 LD供电电源模块输出电压值为 该最大值, 然后执行步骤 308。
步骤 308, 优化结束。
本发明实施例在保证用户业务带宽需求和线路质量的同时, 根据 xDSL用户 板上所放号用户端口最大支持的业务带宽、 传输模式和线路连接参数, 对 xDSL 用户板上放号用户端口线路发送功率优化, 并配合线路驱动器供电电压的动态 调整, 最大程度的降低 xDSL用户板能耗。 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于一计算 机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施例的流程。 其中, 所述的存储介质可为磁碟、 光盘等。 以上所述, 仅为本发明实施例的具体实施方式, 但本发明实施例的保护范 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, 可轻易想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本 发明实施例的保护范围应该以权利要求的保护范围为准。
本发明公开了一种降低 xDSL用户板能耗的方法, 包括: 获取放号用户端口 提供给用户的最大下行业务带宽、 用户端口线路连接参数中的下行信噪比余量 以及该用户端口所绑定线路模板中的传输模式信息; 判断下行信噪比余量是否 大于预定值, 如果是则减少下行最大标称总计传输功率, 否则配置下行最大标 称总计传输功率为当前端口线路连接参数中的下行传输功率; 根据下行最大标 称总计传输功率和传输模式计算出各放号用户端口在当前绑定模板配置下所对 应线路驱动器需要的最小不失真供电电压, 并进行各最小不失真供电电压值对 比, 找出最大值; 控制线路驱动器供电电源模块输出电压为该最大值。

Claims

权利要求
1、 一种降低 xDSL用户板能耗的方法, 其特征在于, 包括:
获取放号用户端口提供给用户的最大下行业务带宽、 用户端口线路连接参 数中的下行信噪比余量 SNRM以及该用户端口所绑定线路模板中的传输模式信 息, 对放号用户端口所绑定模板的线路和信道参数进行配置;
判断下行 SNRM是否大于预定值 如果是则减少当前该端口所绑定模板中的 下行最大标称总计传输功率值以减少多出的 SNRM,否则配置该端口所绑定模板 的下行最大标称总计传输功率为当前端口线路连接参数中的下行发送功率; 根据所述下行最大标称总计传输功率和传输模式计算出各放号用户端口在 当前绑定模板配置下所对应线路驱动器需要的最小不失真供电电压, 并进行各 最小不失真供电电压值对比, 找出最大值;
控制线路驱动器供电电源模块输出电压为所述的最大值。
2、 根据权利要求 1所述的方法, 其特征在于, 所述对放号用户端口所绑定 模板的线路和信道参数进行配置的具体方法为:
配置最大下行 SNRM为该预定最大下行 SNRM, 配置最大下行数据率为该用 户端口需要提供给用户的最大下行业务带宽, 传输模式由运营商根据当前应用 场景和端口最大支持数据率来自行配置。
3、 根据权利要求 1所述的方法, 其特征在于, 所述多出的 SNRM通过线路连 接参数中下行 SNRM减去预定最大下行 SNRM获得。
4、 根据权利要求 1 , 2或 3所述的方法, 其特征在于, 在所述控制线路驱动 器供电电源模块输出电压为所述的最大值的步骤之后, 还进一步包括:
通过信息收集和控制模块实时查询 xDSL用户板上是否有新放号用户端口, 如果有, 则根据该端口采用的传输模式和当前线路驱动器供电电源模块输出的 供电电压, 计算出该端口在当前情况下的最大下行不失真传输功率, 然后结合 该新放号端口提供给用户的最大下行业务带宽, 预定的最大下行 SNRM, 得到该 端口所绑定模板的线路和信道参数, 并进行第一次初始化。
5、 根据权利要求 4所述的方法, 其特征在于, 在所述第一次初始化之后, 还包括:
当该端口按照上述模板进入 Showtime状态后, 判断端口线路连接参数中下 行净数据率是否能够满足该端口所需支持的最大业务带宽, 并且下行 SNRM是否 大于预定的最大下行 SNRM, 如果是则减少多余部分的 SNRM, 否则根据该端口 绑定模板的线路和信道参数中配置的传输模式, 以及该传输模式所对应的最大 下行线路发送功率计算出该端口线路驱动器所需最小不失真供电电压, 并使其 线路驱动器供电电源模块输出该电压值, 然后修改端口绑定模板中下行最大标 称总计传输功率为该传输模式所对应的最大线路发送功率, 并进行第二次初始 化。
6、 根据权利要求 5所述的方法, 其特征在于, 所述第二次初始化完成之后 进一步包括:
收集当前该端口线路连接参数中下行 SNRM和发送功率, 判断下行 SNRM是 否大于预定的最大下行 SNRM 如果是则减少该端口所绑定模板的线路和信道参 数中下行最大标称总计传输功率配置值, 使其减少多出部分的 SNRM, 否则根据 端口线路连接参数中下行线路发送功率, 修改该端口所绑定模板的线路和信道 参数中下行最大标称总计传输功率;
根据当前用户板上放号用户端口的下行最大标称总计传输功率和传输模 式, 计算用户端口在当前绑定模板配置下各 LD需要的最小不失真供电电压, 然 后进行电压对比, 找出最大值, 并控制 LD供电电源模块输出电压值为该最大值。
7、 一种数字用户线接入复用器 DSLAM, 包括:
电源模块, 用于给 xDSL用户板上的线路驱动器进行供电;
套片, 用于数字信号处理以及数 /模转换等;
多个线路驱动器, 用于对套片提供过来的模拟信号进行功率放大; 其特征在于, 还包括: 信息收集和控制单元, 用于收集 xDSL用户板上端口 放号情况、 放号端口所需提供的最大业务带宽和传输模式以及该端口在
Showtime状态时的线路连接参数, 并根据这些信息对放号用户端口线路发送功 率进行优化, 同时控制线路驱动器供电电源模块的输出电压, 使其输出电压为 满足该用户板上所有线路驱动器在进行功率传输时所需要的最小不失真供电电 压。
8、 根据权利要求 7所述的数字用户线接入复用器, 其特征在于, 所述信息 收集和控制单元还对放号用户端口所绑定模板的线路和信道参数进行配置, 并 判断下行 SNRM是否大于预定值 如果是则减少当前该端口所绑定模板中的下行 最大标称总计传输功率值以减少多出的 SNRM 否则配置该端口所绑定模板的下 行最大标称总计传输功率为当前端口线路连接参数中的下行发送功率; 然后根 据所述下行最大标称总计传输功率和传输模式计算出各放号用户端口在当前绑 定模板配置下所对应线路驱动器需要的最小不失真供电电压, 并进行各最小不 失真供电电压值对比, 找出最大值; 控制线路驱动器供电电源模块输出电压为 所述的最大值。
9、 一种 xDSL系统, 其特征在于, 包括: 用户计算机、 数字用户线调制解调 器、 网管设备以及数字用户线接入复用器。 其中, 用户计算机通过数字用户线 调制解调器与数字用户线接入复用器连接, 其特征在于: 网管设备收集 xDSL用 户板上端口放号情况、 放号端口所需提供的最大业务带宽和传输模式以及该端 口在 Showtime状态时的线路连接参数, 数字用户线接入复用器根据网管设备所 收集的信息对放号用户端口线路发送功率进行优化, 同时控制线路驱动器供电 电源模块的输出电压, 使其输出电压为满足该用户板上所有线路驱动器在进行 功率传输时所需要的最小不失真供电电压。
10、 根据权利要求 9所述的 xDSL系统, 其特征在于, 所述网管设备还对放号 用户端口所绑定模板的线路和信道参数进行配置, 并判断下行 SNRM是否大于预 定值, 如果是则减少当前该端口所绑定模板中的下行最大标称总计传输功率值 以减少多出的 SNRM,否则配置该端口所绑定模板的下行最大标称总计传输功率 为当前端口线路连接参数中的下行发送功率; 然后根据所述下行最大标称总计 传输功率和传输模式计算出各放号用户端口在当前绑定模板配置下所对应线路 驱动器需要的最小不失真供电电压, 并进行各最小不失真供电电压值对比, 找 出最大值; 控制线路驱动器供电电源模块输出电压为所述的最大值。
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CN102957812A (zh) 2013-03-06
US9065887B2 (en) 2015-06-23
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CN102957812B (zh) 2015-06-03
US20140079104A1 (en) 2014-03-20
EP2675145A1 (en) 2013-12-18

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