WO2018000390A1 - 数据通信方法、装置以及系统 - Google Patents

数据通信方法、装置以及系统 Download PDF

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Publication number
WO2018000390A1
WO2018000390A1 PCT/CN2016/088031 CN2016088031W WO2018000390A1 WO 2018000390 A1 WO2018000390 A1 WO 2018000390A1 CN 2016088031 W CN2016088031 W CN 2016088031W WO 2018000390 A1 WO2018000390 A1 WO 2018000390A1
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WO
WIPO (PCT)
Prior art keywords
user side
side device
network terminal
plc
interference
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PCT/CN2016/088031
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English (en)
French (fr)
Inventor
李俏杰
卫东
刘义贤
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/088031 priority Critical patent/WO2018000390A1/zh
Priority to EP16906790.7A priority patent/EP3461013B1/en
Publication of WO2018000390A1 publication Critical patent/WO2018000390A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/32—Reducing cross-talk, e.g. by compensating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines

Definitions

  • the present invention relates to the field of optical communication technologies, and in particular, to a data communication method, apparatus, and system.
  • Power Line Communication is a communication method that uses power lines to transmit data and voice signals.
  • the technology is to load the high-frequency signal carrying information into the current, and then transmit it by wire.
  • the modem that receives the information separates the high-frequency from the current and transmits it to a computer or telephone to realize information transmission.
  • Power line communication includes high voltage power line communication (usually referred to as voltage level of 35KV and above), medium voltage power line communication (referring to 10KV voltage level) or indoor power line communication (380/220V subscriber line).
  • high voltage power line communication usually referred to as voltage level of 35KV and above
  • medium voltage power line communication referring to 10KV voltage level
  • indoor power line communication 380/220V subscriber line
  • DSL Digital Subscriber Line
  • PLC Digital Subscriber Line
  • G.dpm G.9977
  • AF arbitration Funtion
  • the standard is mainly Introduce an arbitration function module (arbitration Funtion, AF) is used to coordinate the parameters of the network between the PLC device and the DSL terminal, thereby eliminating or reducing interference between the DSL terminal and the PLC device.
  • the main concern of this standard is that the PLC and the DSL device are in the same user's home, that is, the single-user-side device, and the AF module is located in the residential gateway (RGW) in the user-side device, that is, the inside of the user-side device is solved.
  • RGW residential gateway
  • a PLC device inside a user-side device may affect other user-side device DSL terminals, that is, existing standards and existing
  • the technology cannot solve the interference problem of the situation. For example, when the PLC device inside the user-side device interferes with the DSL device of the other user-side device, the two user-side devices cannot access the network normally.
  • the embodiment of the invention provides a data communication method and related device and system, which solves the problem of interference between the user side device and the user side device, and can solve the single user interference elimination solution mentioned in the existing standard.
  • the solution is expanded to support interference cancellation between multiple users, thereby improving the reliability of data transmission between users.
  • a data communication method is applied to a system including a central office device and at least two user side devices, where the central office device includes at least one arbitration function module AF, The at least two user side devices, wherein the first user side device comprises a network terminal, and the second user side device comprises a power line communication technology PLC device, the method comprising:
  • the AF monitors a first interference value and a second interference value of the network terminal in the first user side device; wherein the first interference value monitors the first device after turning off the PLC device on all user side devices
  • the AF determines that the network terminal in the first user side device is interfered by the PLC device of the second user side device, controlling the PLC device in the second user side device to the first user side device Interference from network terminals.
  • the AF determines that the interference of the PLC device of the second user-side device to the network terminal in the first user-side device specifically includes:
  • the AF determines that the network terminal in the first user side device is interfered by the PLC device of the second user side device.
  • the method further includes determining whether the network terminal of the first user side device is interfered by the PLC device of the first user side device.
  • the AF monitors a third interference value of the network terminal in the first user side device, where the third interference value is a PLC device pair in the first user side device.
  • the value of the interference of the network terminal in the first user side device is a PLC device pair in the first user side device.
  • the determining whether the network terminal of the first user side device is interfered by the PLC device of the first user side device specifically includes:
  • the AF determines that the network terminal in the first user side device is interfered by the PLC device of the first user side device.
  • the AF determines that the network terminal in the first user side device is interfered by the PLC device of the first user side device, controlling the PLC device in the first user side device The interference of the network terminal of the first user side device.
  • the controlling the interference of the PLC device in the first user-side device to the network terminal of the second user-side device specifically includes:
  • the AF adjusts a transmit power spectral density PSD of the PLC device in the first user side device according to the first interference value and the third interference value, and/or initiates a first user.
  • Online reconfiguration OLR for network terminals in side devices.
  • an embodiment of the present application provides a communication device, where the communication device includes:
  • An acquiring unit configured to monitor and acquire a first interference value and a second interference value of the network terminal in the first user side device connected to the communication device, where the first interference value is off all user side devices
  • the power line communication technology PLC device monitors the interference value of the network terminal in the first user side device, and the second interference value is the PLC device in the second user side device connected to the communication device The value of the interference of the network terminal in a user side device;
  • a determining unit configured to determine, according to the first interference value and the second interference value of the network terminal in the monitored first user side device, whether the network terminal in the first user side device is received by the second user side device Interference from PLC equipment;
  • a processing unit configured to: when the AF determines that the network terminal in the first user side device is interfered by the PLC device of the second user side device, control the PLC device in the second user side device Interference to the network terminal of the first user side device.
  • the processing unit is configured to determine that the network terminal in the first user side device is received by the second user when the difference between the first interference value and the second interference value is greater than a certain threshold. Interference from PLC equipment of side equipment.
  • the determining unit is further configured to determine whether the network terminal of the first user side device is interfered by the PLC device of the first user side device.
  • the acquiring unit is further configured to monitor a third interference value of the network terminal in the first user side device, where the third interference value is in the first user side device The value of the interference of the PLC device to the network terminal in the first user side device.
  • the processing unit is further configured to determine, according to the first interference value and the third interference value of the network terminal in the monitored first user side device, when the first interference value is If the difference between the three interference values is greater than a certain threshold, the AF determines that the network terminal in the first user side device is interfered by the PLC device of the first user side device.
  • the processing unit is further configured to: when it is determined that the network terminal in the first user side device is interfered by the PLC device of the first user side device, control the first user side device The interference of the PLC device to the network terminal of the first user side device.
  • the processing unit is configured to adjust a transmit power spectral density PSD of the PLC device in the second user side device according to the first interference value and the second interference value, and/or initiate Online reconfiguration OLR of the network terminal in the first user side device.
  • the processing unit is further configured to adjust a transmit power spectral density PSD and/or of the PLC device in the first user side device according to the first interference value and the third interference value. Or initiating an online reconfiguration OLR of the network terminal in the first user side device.
  • an embodiment of the present application provides an access device, where the access device includes any one of the communication devices provided in the above related possibilities.
  • the embodiment of the present application provides a communication system, including an access device and at least two user side devices, where the access device includes: a digital subscriber line DSL central office device and an arbitration function module AF;
  • the user side device includes: a network terminal, and the second user side device includes: a power line communication technology PLC device, wherein the access device DSL office device includes: any one of the foregoing communication device.
  • the present invention discloses a data communication method, apparatus, and system, wherein the method includes: AF monitoring a first interference value and a second interference value of a network terminal in the first user side device, where the An interference value is used to monitor the interference value of the network terminal in the first user side device after the PLC device on all the user side devices is turned off, and the second interference value is a PLC device pair in the second user side device.
  • a value of the interference of the network terminal in the first user side device determining, according to the first interference value and the second interference value of the network terminal in the monitored first user side device, Whether the network terminal is interfered by the PLC device of the second user side device, thereby solving the interference problem between the user side device and the user side device, and the solution of the single user interference elimination mentioned in the existing standard can be expanded to be A solution that supports interference cancellation between multiple users, thereby improving the reliability of data transmission between users.
  • FIG. 1 is a schematic diagram of a network architecture of a data communication system according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of another communication device according to an embodiment of the present invention.
  • the embodiment of the present invention provides a data communication method, a related device, and a system, which are used to solve the problem of out-of-order data packets received by the receiving device due to the delay of the wavelength channel in the next-generation EPON system, and realize the next generation.
  • the delay measurement accuracy of each channel of the EPON system can reach the bit level, so that the receiving device can accurately reassemble the message regardless of the circumstances, which greatly improves the reliability of the system.
  • FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention.
  • the communication system system may be a digital subscriber line DSL system, but is not limited to a DSL system.
  • the method includes: a central office side device and at least two user side devices, wherein the central office side device and the user side device have multiple DSL line connections, such as copper wires.
  • the central office device includes: a network management system NMS connected to the NMS is a central office Central Office (CO) or Streetside Cabinet equipment.
  • the CO device or the streetside cabinet is a network side device such as a Vectoring Control Entity (VCE), a switch, a cabinet, and the like, and may also include a Distributed Point Unit (DPU);
  • the DPU further includes: an arbitration function module AF and a plurality of digital subscriber line DSL office equipment.
  • the user-side device includes: a residential gateway (RGW), a network terminal (NT), and/or a power line communication technology PLC device. Generally, some user-side devices may include only network terminals.
  • the network terminal is connected to the RGW and performs data communication through the 802.3 protocol.
  • the user side device may be a Customer Premises Equipment (CPE).
  • CPE Customer Premises Equipment
  • the network terminal can further include a DSL remote device, wherein the DSL remote device communicates with the home network via the 802.3 protocol.
  • the PLC devices are generally used in pairs, that is, one user side device may include a pair of PLC devices, one PLC device is used to transmit signals, and the other PLC device is used to receive signals, and one PLC device is connected to the RGW through the 802.3 protocol. Data communication is carried out; another PLC device is connected to the user, for example, the user is a device such as a laptop computer, and data communication is also performed through the 802.3 protocol.
  • the AF module increases the logical interface between the xTU-Os in the DPU, so that the AF module has global processing capability and can coordinate the interference problem of the PLC between the multiple users on the xDSL device.
  • the AF module is placed in a digital subscriber line access multiplexer (DSLAM) or DPU, and a logical interface between the new AF module and each DSL central office device is defined.
  • DSLAM digital subscriber line access multiplexer
  • the primitives of interaction, the logical interface between the AF module and the PLC device and the NT device may be defined by the previous standard with A possible reference model is shown below:
  • the logical interface can define the following primitives: Refer to Section 7.6 of the G.dpm standard.
  • the functions of each primitive are defined as follows:
  • the AF sends a request to the DSL office to request the network terminal NT or the PLC device to feed back the status information;
  • Measure-mode.request.primitive AF requests the PLC device from the DSL office to start measurement
  • Measure-mode.confirm.primitive The DSL office end returns to the AF whether the measurement request agrees;
  • Measure.request.primitive The AF requests the DSL office to request the NT to start measurement;
  • Measure.confirm.primitive The DSL office end returns to the AF whether the measurement request agrees;
  • Completion.request.primitive AF requests the DSL office to request the PLC device to measure the situation;
  • Results.request.primitive The measurement data of the NT feedback is read from the DSL office, where the measurement data is the interference value of the other user side device to the user side device, and may be a signal-to-noise ratio (SNR). Or Quiet Line Noise (QLN);
  • SNR signal-to-noise ratio
  • QLN Quiet Line Noise
  • Configure.request.primitive sends a primitive to the DSL office to initiate a change transmission parameter to the DSL remote device or PLC device;
  • the primitives of the logical interface can be specified by the existing standard G.dpm, and the specific implementation can be customized by the device vendor, for example, by the NSF command of the eoc channel in G.9701 (G.fast standard).
  • the application scenario may also consider a scenario in which one user side device uses a PLC device, and another user side device does not use a PLC device.
  • a user side device that does not use the PLC device may not support the G.dpm standard, that is,
  • the application scenario also includes the application scenario that the user side device only includes the NT device.
  • the AF is located on the central office device side, which is convenient for globally managing crosstalk between user side devices, especially when the network terminal in one user side device is interfered by the PLC device of other user side devices.
  • the impact which in turn reduces this interference, greatly improves the quality of data communication.
  • the following provides a data communication method based on the network architecture provided in FIG. 1 above, as shown in FIG. 2.
  • the system is applied to a system including a central office side device and at least two user side devices, wherein the central office side device includes at least one arbitration function module AF, wherein the at least two user side devices, wherein the first user side device
  • the network terminal is included, and the second user side device includes a power line communication technology PLC device, and the method includes:
  • S300 The AF monitors a first interference value and a second interference value of the network terminal in the first user side device, where the first interference value is monitored after the PLC devices on all user side devices are turned off.
  • the AF determines, according to the first interference value and the second interference value of the network terminal in the monitored first user side device, whether the network terminal in the first user side device is received by the second user side device. Interference of the PLC device; if the network terminal in the first user side device is received by the second user If the interference of the PLC device of the side device is performed, step S304 is performed; otherwise, step S308 is performed.
  • the step of the AF determining that the PLC device of the second user side device interferes with the network terminal in the first user side device specifically includes:
  • the AF determines that the network terminal in the first user side device is interfered by the PLC device of the second user side device.
  • controlling the interference of the PLC device in the first user side device to the network terminal of the second user side device specifically includes:
  • the method may further include:
  • the first user side device further includes a PLC device, determine whether the network terminal of the first user side device is interfered by the PLC device of the first user side device.
  • step S310 When the AF device determines that the network terminal of the first user side device is interfered by the PLC device of the first user side device, step S312 is performed; otherwise, step S314 is performed.
  • the determining process of the specific S310 is specifically as follows:
  • the AF monitors a third interference value of the network terminal in the first user side device, where the third interference value is the PLC device in the first user side device in the first user side device The value of the interference of the network terminal.
  • the AF determines that the network terminal in the first user side device is interfered by the PLC device of the first user side device.
  • the AF determines that the network terminal in the first user side device is interfered by the PLC device of the first user side device, controlling the PLC device in the first user side device to the first user side. Interference from the network terminal of the device.
  • controlling the interference of the PLC device in the first user side device to the network terminal of the first user side device specifically includes:
  • the AF determines that the network terminal in the first user side device is not interfered by the PLC device of the first user side device, and the AF does not need the PLC and/or the first user side device.
  • the NT of a user side device is adjusted.
  • the two user-side devices in FIG. 1 are taken as an example, wherein the user-side device 1 includes: the network terminal 1 is NT1, the PLC device 1-1, and the PLC device 1-2, wherein the PLC 1-1 is configured to send Signal, PLC1-2 is used to receive signals; NT1 includes DSL far end 1; said user side device 2 includes: network terminal 2 is NT2, PLC device 2-1, PLC set 2-2, wherein PLC2-1 is used The signal is sent, PLC2-2 is used to receive the signal; network terminal 2 includes the DSL far end 2.
  • the process of the AF determining that the PLC device in the second user side device interferes with the network terminal of the first user side device is as follows:
  • All PLC devices of the two user-side devices are silent, and measure the SNR/QLN of NT1 and NT2 respectively;
  • the PLC device 1 of the user side device 1 transmits, the PLC device 2 receives, and the other PLC devices of the user 2 are silent, respectively measuring the SNR/QLN of NT1 and NT2;
  • the PLC device 2 of the user side device 1 transmits, the PLC device 1 receives, the other PLC devices of the user 2 are silent, and the SNR/QLN of NT1 and NT2 are respectively measured;
  • the following takes the monitored interference value as the SNR as an example, and the monitoring result of the interference value QLN is also referred to the approximate processing of the SNR.
  • the SNRs of NT1 and NT2 measured when the PLC is silent in all user side devices are SNR1 and SNR2, respectively.
  • the SNR of the NT measured at the time of PLC transmission in the other user side device is recorded as SNRi,j-k, where i is the SNR of the jth user's home PLC device k when it is the i-th user NTi.
  • SNR1, 1-1 indicates that the PLC device 1 of the user 1 family transmits the SNR of NT1 when all other PLC devices are silent, so that we can obtain SNR1, 1-1, SNR1, 1-2, SNR1, 2-1, respectively.
  • the NT1 is judged to be interfered by the PLC device of the receiving user 2 by comparing the difference between SNR1 and SNR1, 2-1 and SNR1, 2-2, for example, when (SNR1 - SNR1, 2-1) is greater than a certain threshold When the interference of one PLC device in the user side device 2 is reached, the specific threshold can be adjusted in the actual algorithm. Whether or not the user side device 2 is interfered with by the PLC device in the side device 1 can be obtained by the same comparison.
  • the process of determining that the network terminal in the first user side device is interfered by the PLC device of the first user side device is as follows:
  • the NT device in the user-side device is not interfered by the PLC device in the other user-side device, it can be completely considered as an internal adjustment of the single user-side device, and the AF module can follow the algorithm flow of the existing G.dpm standard. Adjustment.
  • the AF tuning policy in a user's home can be based on the SNR1/QLN1 measured when all PLCs in the user-side device are silent, and the SNR2/QLN2 measured when a PLC device transmits.
  • the AF module transmits power to the PLC device.
  • the AF module should consider the interference factor of the PLC device of the other user side device in the arbitration policy, for example, when the PSD adjustment of the PLC device is performed. Take the most influential SNR for reference and adjust it on the xDSL device via OLR.
  • the previously measured SNRi,jk/QLNi,jk can be calculated with SNRi/QLNi measured by all PLCs during silence.
  • the AF module can reduce the transmission PSD of the PLC device by [max ⁇ SNRm ⁇ -X] or [max ⁇ QLNm ⁇ -X ⁇ dB, while DSL
  • the device NT initiates an OLR process to reduce its bit loading table by X/3 bits.
  • the NT1 user does not support the G.dpm standard, that is, the AF module cannot directly interact with the NT1 message.
  • the NT2 user's PLC device affects NT1, it can pass AF and xTU-O.
  • the interface obtains the measurement results from the xTU-O, and the DSL system itself can be used to support the SNR or QLN measurement feedback process.
  • the processing steps are as follows:
  • All the PLC devices of the NT2 user are silent, NT1 and NT2 respectively measure the SNR/QLN at this time, and the AF module respectively obtains the measured SNR/QLN;
  • NT2 PLC device 1 When NT2 PLC device 1 transmits, it measures the SNR/QLN of NT1 and NT2 respectively;
  • NT2 PLC device 2 When NT2 PLC device 2 transmits, it measures the SNR/QLN of NT1 and NT2 respectively;
  • NT1 determines whether it is interfered by the PLC of other user-side devices according to the SNR/QLN of all PLC silences and the SNR/QLN when NT2 user PLC devices transmit;
  • the general G.fast linear precoding requires power control due to the channel characteristics of the high frequency portion.
  • the power control matrix C is generally calculated based on the precoding coefficient P, which directly affects the rate of the G.fast line.
  • the G.fast user considers linear precoding and uses PLC equipment for network expansion.
  • the power control characteristics of G.fast can be used to combine the interference generated by the PLC device to reduce the user perception of G.fast.
  • the steps can be as follows:
  • the corresponding NT user is subtracted from the SNR/QLN measured by the PLC device when the PLC device is silent, and the SNR/QLN measured by the PLC device is obtained, and ⁇ SNR/ ⁇ QLN is obtained and sorted, such as from large to small;
  • the G.fast user can initiate the TIGA to adjust the line parameters by the DSL office.
  • AF can adjust the transmit PSD of the corresponding PLC device according to the calculated ⁇ SNR/ ⁇ QLN, such as increasing the PSD of the corresponding PLC device. or (dB);
  • the advantage of this is that combined with power control, not only reduce the PSD of the PLC device, it may lead to excessive reduction of the speed of the PLC device, and part of the rate loss can be compensated by the power control of the G.fast system.
  • nonlinear precoding has different line rates due to its serial encoding result.
  • the intensity of the interference of the PLC device to the G.fast user can be sorted from large to small, and the nonlinear precoding is performed according to the previous reverse order when the G.fast line performs nonlinear precoding, thus making the PLC The rate of G.fast users with strong interference is improved.
  • the PSD adjustment can still be performed on the PLC device according to the AF strategy according to the algorithm described above. This combines the nonlinear precoding line sequence with the interference of the PLC device, which can improve the rate of G.fast which is partially interfered by the PLC device and reduce the perception of the rate reduction of the G.fast user.
  • the method for data communication includes: monitoring, by the AF, a first interference value and a second interference value of the network terminal in the first user side device, where the first interference value is off Monitoring the network end in the first user side device after the PLC device on all user side devices
  • the interference value of the terminal, the second interference value is a value of interference of the PLC device in the second user side device to the network terminal in the first user side device; according to the monitored first user side device
  • the embodiment of the invention further provides a communication device.
  • the communication device includes:
  • An acquiring unit configured to monitor and acquire a first interference value and a second interference value of the network terminal in the first user side device connected to the communication device, where the first interference value is off all user side devices
  • the power line communication technology PLC device monitors the interference value of the network terminal in the first user side device, and the second interference value is the PLC device in the second user side device connected to the communication device The value of the interference of the network terminal in a user side device;
  • a determining unit configured to determine, according to the first interference value and the second interference value of the network terminal in the monitored first user side device, whether the network terminal in the first user side device is received by the second user side device Interference from PLC devices.
  • a processing unit configured to: when the AF determines that the network terminal in the first user side device is interfered by the PLC device of the second user side device, control the PLC device in the second user side device to the Interference of a network terminal of a user side device.
  • the processing unit is configured to: when the difference between the first interference value and the second interference value is greater than a certain threshold, determine that the network terminal in the first user side device is received by the second user side device The interference of the PLC device.
  • the determining unit is further configured to determine whether the network terminal of the first user side device is interfered by the PLC device of the first user side device.
  • the acquiring unit is further configured to monitor a third interference value of the network terminal in the first user side device, where the third interference value is a PLC device pair in the first user side device a value of interference of the network terminal in the first user side device.
  • the processing unit is further configured to determine, according to the first interference value and the third interference value of the network terminal in the monitored first user side device, the first interference value and the third interference value. If the difference is greater than a certain threshold, the AF determines that the network terminal in the first user side device is interfered by the PLC device of the first user side device.
  • processing unit is further configured to: when it is determined that the network terminal in the first user side device is interfered by the PLC device of the first user side device, control the PLC device pair in the first user side device Interference of the network terminal of the first user side device.
  • the processing unit is configured to adjust a transmit power spectral density PSD of the PLC device in the second user side device according to the first interference value and the second interference value, and/or initiate a first user side.
  • Online reconfiguration OLR for network terminals in the device.
  • the processing unit is further configured to: adjust, according to the first interference value and the third interference value, a transmit power spectral density PSD of the PLC device in the first user side device, and/or initiate a first Online reconfiguration OLR of the network terminal in the user side device.
  • An embodiment of the present invention provides a communication device, where the communication device monitors a first interference value and a second interference value of a network terminal in the first user side device, where the first interference value turns off all Monitoring, by the PLC device on the user side device, an interference value of the network terminal in the first user side device, where the second interference value is used by the PLC device in the second user side device a value of the interference of the network terminal in the user equipment; determining whether the network terminal in the first user equipment is based on the first interference value and the second interference value of the network terminal in the monitored first user equipment It is interfered by the PLC device of the second user side device, thereby solving the interference problem between the user side device and the user side device, and the solution of the single user interference elimination mentioned in the existing standard can be expanded to support multiple users.
  • the solution between interference cancellation improves the reliability of data transmission between users.
  • an embodiment of the present invention further provides an access device, where the access device includes: a digital subscriber line DSL central office device and an arbitration function module AF, and the specific access device can refer to the AF of FIG. 1 .
  • the structure of the AF is shown in FIG. 3, wherein the function of the AF is described in the structure of FIG. 3, and the description of each functional module in the corresponding embodiment of FIG. 3 can also be seen in FIG. 2 and the implementation corresponding to the figure. The description of the example is not described here.
  • the access device provided by the embodiment of the present invention solves the problem of interference between the user side device and the user side device, and can expand the solution of the single user interference cancellation mentioned in the existing standard to support multiple users.
  • the interference cancellation solution further improves the reliability of data transmission between users.
  • the embodiment of the present invention further provides a communication system, as shown in FIG. 1 , including an access device and at least two user side devices, where the access device includes: a digital subscriber line DSL central office device and an arbitration function module AF;
  • the first user-side device includes: a network terminal, and the second user-side device includes: a power line communication technology PLC device, and the access device DSL office device includes: the communication device as described in the foregoing embodiment. 1-3 and the detailed description of the embodiments corresponding to FIGS. 1-3 are not described herein again.
  • the communication system provided by the embodiment of the invention solves the problem between the user side device and the user side device.
  • the interference problem can expand the solution of single-user interference cancellation mentioned in the existing standard into a solution that can support interference cancellation between multiple users, thereby improving the reliability of data transmission between users.
  • an embodiment of the present invention further provides a communication device.
  • the communication device includes: a processor, a memory, and a bus system, where the processor and the memory are connected by using the bus system.
  • the memory is configured to store an instruction
  • the processor is configured to execute the instruction stored by the memory, wherein the processor is configured to: monitor a first interference value and a second interference value of a network terminal in the first user side device
  • the first interference value is used to monitor the interference value of the network terminal in the first user side device after the PLC device on all the user side devices is turned off, and the second interference value is the second user side device.
  • the value of the interference of the PLC device in the first user side device determining the number according to the first interference value and the second interference value of the network terminal in the monitored first user side device Whether the network terminal in the user side device is interfered by the PLC device of the second user side device; determining that the network terminal in the first user side device is subjected to the PLC device of the second user side device And the interference of the PLC device in the second user side device to the network terminal of the first user side device is controlled.
  • the disclosed apparatus may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the above units is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. Go to another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the units described above as separate components may or may not be physically separated.
  • the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the above-described integrated unit if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, server or network device, etc., and in particular a processor in a computer device) to perform all or part of the steps of the above-described methods of various embodiments of the present invention.
  • the foregoing storage medium may include: a U disk, a mobile hard A medium that can store program code, such as a disk, a disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明公开了一种数据通信方法、装置和系统，其中，所述方法包括：AF监测所述第一用户侧设备中的网络终端的第一干扰值和第二干扰值，其中，所述第一干扰值为关闭所有用户侧设备上的PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为所述第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰，进而解决了用户侧设备与用户侧设备之间的干扰问题，可以将现有的标准提到的单用户干扰消除的解决方案扩张成可支持多用户之间干扰消除的解决方案，进而提高了用户之间的数据传输的可靠性。

Description

数据通信方法、装置以及系统 技术领域
本发明涉及光通信技术领域，具体涉及数据通信方法、装置以及系统。
背景技术
电力线通信技术(Power Line Communication)简称PLC，是利用电力线传输数据和语音信号的一种通信方式。该技术是把载有信息的高频信号加载于电流，然后用电线传输，接收信息的调制解调器再把高频从电流中分离出来，并传送到计算机或电话，以实现信息传递。电力线通信包括高压电力线通信(通常指35KV及以上电压等级)、中压电力线通信(指10KV电压等级)或室内电力线通信(380/220V用户线)。这里我们主要关注的是室内电力线通信。电力线通信由于不需要任何线路铺设，随意接入，任意移动计算机位置，具有即插即用等优点，目前在家庭内部用作网络扩展得到了较大应用。
PLC技术目前主要的应用场景出现在家庭互联网接入时使用各种数字用户线路(Digital Subscriber Line，简称DSL)设备，其中，DSL是一种在电话双绞线传输的数据传输技术。在家庭内部使用PLC设备进行网络拓扑扩展，如在不同房间通过PLC设备上网。由于一个用户侧设备内部PLC设备和DSL终端设备在频谱上有较大的重叠，当两个设备在同时使用时就会产生相互干扰。PLC设备由于具有较强的噪声抵抗技术，所以一般认为PLC对DSL设备的干扰较强，DSL设备对PLC设备的干扰几乎可以忽略。
现有的标准G.9977(G.dpm)标准中，“Mitigation of interference between DSL and PLC”提供了解决一个用户设备内部PLC设备和DSL终端设备之间干扰问题的机制和接口，该标准主要是引入一个仲裁功能模块(arbitration  funtion，AF)用于协调PLC设备和DSL终端之间的网络的参数，从而消除或者减少DSL终端和PLC设备之间的干扰。但该标准主要关注的是PLC和DSL设备在同一个用户家里即单用户侧设备，且AF模块都位于用户侧设备中的住宅网关(Residential Gateway，RGW)，即解决的是一个用户侧设备内部的PLC设备和DSL终端的干扰的问题。但是，对于目前所支持的应用场景而言，在某些场景如密集单元住宅，一个用户侧设备内部的PLC设备可能会对其它用户侧设备的DSL终端产生影响，即现有的标准以及现有技术无法解决这种情况的干扰问题，例如：当一个用户侧设备内部的PLC设备对另外一个用户侧设备的DSL设备产生干扰，导致两个用户侧设备都无法正常接入网络。
发明内容
本发明实施例提供了一种数据通信方法和相关设备以及系统，用以解决了用户侧设备与用户侧设备之间的干扰问题，可以将现有的标准提到的单用户干扰消除的解决方案扩张成可支持多用户之间干扰消除的解决方案，进而提高了用户之间的数据传输的可靠性。
一方面，本申请的实施例一种数据通信方法，应用于包括局端侧设备和至少两个用户侧设备的系统中，其中，所述局端侧设备包括至少一个仲裁功能模块AF，所述至少两个用户侧设备中，其中第一用户侧设备包括网络终端，第二用户侧设备包括电力线通信技术PLC设备，所述方法包括：
所述AF监测所述第一用户侧设备中的网络终端的第一干扰值和第二干扰值；其中，所述第一干扰值为关闭所有用户侧设备上的PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为所述第二用户侧设 备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；
所述AF根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰；
当所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰，则控制所述第二用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
在一个可能的设计中，若所述AF确定第二用户侧设备的PLC设备对所述第一用户侧设备中的网络终端的干扰具体包括：
当所述第一干扰值与第二干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰。
在一个可能的设计中，所述方法还包括：确定所述第一用户侧设备的网络终端是否受到所述第一用户侧设备的PLC设备的干扰。
在一个可能的设计中，所述AF监测所述第一用户侧设备中的网络终端的第三干扰值，其中，所述第三干扰值为所述第一用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值。
在一个可能的设计中，所述确定所述第一用户侧设备的网络终端是否受到所述第一用户侧设备的PLC设备的干扰具体包括：
所述AF根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第三干扰值，确定当所述第一干扰值与第三干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰。
在一个可能的设计中，若所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰，则控制所述第一用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
在一个可能的设计中，所述控制所述第一用户侧设备中的PLC设备对所述第二用户侧设备的网络终端的干扰具体包括：
所述AF根据所述第一干扰值和所述第二干扰值，调整所述第二用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
在一个可能的设计中，所述AF根据所述第一干扰值和所述第三干扰值，调整所述第一用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
另一方面，本申请的实施例提供了一种通信设备，所述通信设备包括：
获取单元，用于监测并获取与所述通信设备相连的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，其中，所述第一干扰值为关闭所有用户侧设备上的电力线通信技术PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为与所述通信设备相连的第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；
判断单元，用于根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰；
处理单元，用于当所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰，则控制所述第二用户侧设备中的PLC设备 对所述第一用户侧设备的网络终端的干扰。
在一个可能的设计中，处理单元，具体用于所述当第一干扰值与第二干扰值的差值大于某一阈值，则确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰。
在一个可能的设计中，所述判断单元，还用于判断所述第一用户侧设备的网络终端是否受到所述第一用户侧设备的PLC设备的干扰。
在一个可能的设计中，所述获取单元，还用于监测所述第一用户侧设备中的网络终端的第三干扰值，其中，所述第三干扰值为所述第一用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值。
在一个可能的设计中，所述处理单元，还用于根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第三干扰值，确定当所述第一干扰值与第三干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰。
在一个可能的设计中，所述处理单元，还用于当确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰，则控制所述第一用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
在一个可能的设计中，处理单元，具体用于根据所述第一干扰值和所述第二干扰值，调整所述第二用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
在一个可能的设计中，所述处理单元，还用于根据所述第一干扰值和所述第三干扰值，调整所述第一用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
另一方面，本申请实施例提供了一种接入设备，所述接入设备包括如上述可能的涉及中提供的任意一种通信设备。
一方面，本申请实施例提供了一种通信系统，包括接入设备和至少两个用户侧设备，所述接入设备包括：数字用户线路DSL局端设备和仲裁功能模块AF；所述第一用户侧设备包括：网络终端，所述第二用户侧设备包括：电力线通信技术PLC设备，其特征在于，所述接入设备DSL局端设备包括：包括如上述可能的涉及中提供的任意一种通信设备。
本发明公开了一种数据通信方法、装置和系统，其中，所述方法包括：AF监测所述第一用户侧设备中的网络终端的第一干扰值和第二干扰值，其中，所述第一干扰值为关闭所有用户侧设备上的PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为所述第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰，进而解决了用户侧设备与用户侧设备之间的干扰问题，可以将现有的标准提到的单用户干扰消除的解决方案扩张成可支持多用户之间干扰消除的解决方案，进而提高了用户之间的数据传输的可靠性。
附图说明
为了更清楚地说明本发明实施例技术方案，下面将对实施例和现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性 的前提下，还可以根据这些附图获得其它的附图。
图1为本发明实施例提供的一种数据通信系统的网络架构示意图；
图2为本发明实施例提供的一种数据通信方法；
图3为本发明实施例提供的一种通信设备的结构示意图；
图4为本发明实施例提供的另一种通信设备的结构示意图。
具体实施方式
本发明实施例提供了一种数据通信方法和相关设备以及系统，用以解决了下一代EPON系统中由于波长通道的时延导致接收设备重组接收的数据报文的乱序问题，实现了下一代EPON系统的各通道的延时测量精度可达到bit级，使得接收设备无论何种情况下都能实现报文的准确重组，极大地提高了系统的可靠性。
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，下面所描述的实施例仅仅是本发明一部分实施例，而非全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
图1为本发明实施例提供的一种网络架构示意图，如图1所示，所述通信系统系统，所述系统可以为数字用户线路DSL系统，但是不限于DSL系统。所述包括：局端侧设备和至少两个用户侧设备，其中，局端侧设备与用户侧设备之间具有多路DSL线路连接，例如铜线。
所述局端侧设备包括：网络管理系统NMS与所述NMS连接的是中心局 端(Central Office,简称CO)或者街边柜Cabinet设备。其中CO设备或者街边柜Cabinet设备为矢量化控制实体(Vectoring Control Entity，简称VCE)、交换机、机柜等网络侧的设备，还可以包括分布式接入点单元(Distributed Point Unit，简称DPU)；所述DPU进一步包括：仲裁功能模块AF和多个数字用户线路DSL局端设备。
所述任意一用户侧设备包括：家庭网关(Residential Gateway，RGW)、网络终端(Network Terminal，NT)和/或电力线通信技术PLC设备，一般而言，有的用户侧设备可以只包括网络终端。所述网络终端与RGW相连，通过802.3协议进行数据通信。所述用户侧设备可以为用户驻地设备(Customer Premises Equipment,简称CPE)。
网络终端可以为进一步地包括DSL远端设备，其中DSL远端设备通过802.3协议与家庭网络通信。
所述PLC设备一般成对使用，即一个用户侧设备可以包括一对PLC设备，一个PLC设备用于发送信号，另一个PLC设备则用于接收信号，其中一个PLC设备与RGW相连，通过802.3协议进行数据通信；另一个PLC设备与用户相连，例如用户为笔记本电脑等设备，也是通过802.3协议进行数据通信。
进一步地，AF模块增加DPU中xTU-O之间的逻辑接口，使得AF模块具有全局处理能力，能够协调多个用户之间的PLC对xDSL设备的干扰问题。具体的将AF模块放到数字用户线接入复接器(digital subscriber line access multiplexer，DSLAM)或者DPU中，并定义新的AF模块与各DSL局端设备之间的逻辑接口
Figure PCTCN2016088031-appb-000001
和交互的原语，AF模块与PLC设备和NT设备之间的逻辑接口可能采用之前标准定义的
Figure PCTCN2016088031-appb-000002
和
Figure PCTCN2016088031-appb-000003
一种可能的参考模型如下图所示:
其中
Figure PCTCN2016088031-appb-000004
为新增与xTU-O之间的逻辑接口，主要与xTU-O交互相关的信息。例如在
Figure PCTCN2016088031-appb-000005
逻辑接口可定义如下一些原语：可参考G.dpm标准第7.6节，具体各个原语的功能定义如下：
Status.requesst.primitve：AF向DSL局端发送请求，请求网络终端NT或PLC设备反馈状态信息；
Status.confirm.primitve：DSL局端向AF回复确认请求；
Measure-mode.request.primitive：AF向DSL局端请求PLC设备开始测量；
Measure-mode.confirm.primitive：DSL局端向AF回复测量请求是否同意；
Measure.request.primitive：AF向DSL局端请求NT开始测量的请求；
Measure.confirm.primitive：DSL局端向AF回复测量请求是否同意；
Completion.request.primitive：AF向DSL局端请求PLC设备测量情况；
Completion.confirm.primitive：DSL局端向AF回复PLC设备测量情况；
Results.request.primitive：向DSL局端读取NT反馈的测量数据，其中测量数据为其它用户侧设备对该用户侧设备的干扰值，可以为信噪比(Signal-to-noise ratio，SNR)或者静默线路噪声(Quiet Line Noise，QLN)；
Results.confirm.primitive：用户回复请求；
Configure.request.primitive：向DSL局端发送对DSL远端设备或PLC设备发起改变发送参数的原语；
Configure.confirm.primitive：回复配置请求原语。
Figure PCTCN2016088031-appb-000006
和
Figure PCTCN2016088031-appb-000007
逻辑接口的原语可采用现有标准G.dpm的规定，具体实现可由设备商自定义，例如可通过G.9701(G.fast标准)中的eoc通道的NSF命令实现。
可选地，上述应用场景也可以考虑一个用户侧设备使用PLC设备，另一个用户侧设备不使用PLC设备的场景，此时可能出现不使用PLC设备的用户侧设备不支持G.dpm标准，即上述应用场景也包括：用户侧设备只包括NT设备的应用场景。
从图1的网络架构图中可知，AF位于局端设备侧，方便于全局管理用户侧设备之间的串扰，尤其是一个用户侧设备中的网络终端受到其他用户侧设备的PLC设备的干扰的影响，进而降低这种干扰，极大地提高数据通信质量。
下面基于上面图1提供的网络架构，提供一种数据通信方法，如图2所示。应用于包括局端侧设备和至少两个用户侧设备的系统中，其中，所述局端侧设备包括至少一个仲裁功能模块AF，所述至少两个用户侧设备中，其中第一用户侧设备包括网络终端，第二用户侧设备包括电力线通信技术PLC设备，所述方法包括：
S300、所述AF监测所述第一用户侧设备中的网络终端的第一干扰值和第二干扰值；其中，所述第一干扰值为关闭所有用户侧设备上的PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为所述第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值。
S302、所述AF根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，判断所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰；若所述第一用户侧设备中的网络终端受到第二用户 侧设备的PLC设备的干扰，则执行步骤S304；否则，则执行步骤S308。
进一步地，所述AF确定第二用户侧设备的PLC设备对所述第一用户侧设备中的网络终端的干扰的步骤具体包括：
当所述第一干扰值与第二干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰。
S304、当所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰，则控制所述第二用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
具体地，所述控制所述第一用户侧设备中的PLC设备对所述第二用户侧设备的网络终端的干扰具体包括：
所述AF根据所述第一干扰值和所述第二干扰值，调整所述第二用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
可选地，所述方法还可以包括：
S308、当所述第一用户侧设备还包括PLC设备，判断所述第一用户侧设备的网络终端是否受到所述第一用户侧设备的PLC设备的干扰。
S310、当所述AF设备确定所述第一用户侧设备的网络终端受到所述第一用户侧设备的PLC设备的干扰，则执行步骤S312；否则，执行步骤S314。
具体S310的判断过程具体为：
所述AF监测所述第一用户侧设备中的网络终端的第三干扰值，其中，所述第三干扰值为所述第一用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值。
所述AF根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第三干扰值，确定当所述第一干扰值与第三干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰。
S312、若所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰，则控制所述第一用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
具体地，所述控制所述第一用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰具体包括：
所述AF根据所述第一干扰值和所述第三干扰值，调整所述第一用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
S314、所述AF确定所述第一用户侧设备中的网络终端没有受到第一用户侧设备的PLC设备的干扰，则AF不需要对所述第一用户侧设备的PLC和/或所述第一用户侧设备的NT进行调整。
具体地，以图1中的2个用户侧设备为例，其中，用户侧设备1包括：网络终端1为NT1，PLC设备1-1，PLC设别1-2，其中PLC1-1用于发送信号，PLC1-2用于接收信号；NT1包括DSL远端1；所述用户侧设备2包括：网络终端2为NT2，PLC设备2-1，PLC设别2-2，其中PLC2-1用于发送信号，PLC2-2用于接收信号；网络终端2包括DSL远端2。
具体，AF确定所述第二用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰的过程如下：
2个用户侧设备的所有PLC设备静默，分别测量NT1，NT2此时的SNR/QLN；
用户侧设备1的PLC设备1发送，PLC设备2接收，用户2的其他PLC设备静默，分别测量NT1和NT2的SNR/QLN；
用户侧设备1的PLC设备2发送，PLC设备1接收，用户2的其他PLC设备静默，分别测量NT1和NT2的SNR/QLN；
对用户侧设备2的PLC设备1和2重复上面步骤2)和3)；
根据测量结果判断是否收到邻居PLC设备干扰
下面以监测的干扰值为SNR为例，对干扰值为QLN的监测结果也参照SNR的近似处理。
假设在所有用户侧设备内的PLC静默时测的NT1和NT2的SNR分别为SNR1，SNR2。在其它用户侧设备中的PLC发送时测量的NT的SNR记为SNRi,j-k，其中i表示为第i个用户NTi时，第j用户家里PLC设备k发送时的SNR。例如SNR1,1-1表示用户1家庭的PLC设备1发送其他所有PLC设备静默时测得NT1的SNR，这样我们可以分别得到SNR1,1-1、SNR1,1-2、SNR1,2-1、SNR1,2-2、SNR2,1-1、SNR2,1-2、SNR2,2-1、SNR2,2-2。将NT1判断是受收到用户2的PLC设备干扰可通过比较SNR1和SNR1,2-1和SNR1,2-2的差别，例如当(SNR1–SNR1,2-1)大于某个阈值时认为收到了用户侧设备2中的1个PLC设备的干扰，具体的阈值可在实际算法中调整。对用户侧设备2是否受到用于侧设备1中PLC设备干扰可通过同样的比较得到。
具体地，所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰的过程如下：
如果判断该用户侧设备中的NT设备不受到其它用户侧设备中的PLC设备的干扰，则可以完全认为是单个用户侧设备内部的调整，AF模块可以按照现有G.dpm标准的算法流程进行调整。
对在一个用户家中的AF调优策略可根据在该用户侧设备中所有PLC静默时测量的SNR1/QLN1，和某个PLC设备发送时测量的SNR2/QLN2，AF模块在对PLC设备进行发送功率谱密度(Power Spectral Density)PSD调整时可根据ΔSNR＝SNR1-SNR2(dB)或ΔQLN＝QLN2-QLN1(dB)进行调优，例如将PLC设备的发送PSD降低ΔSNR或ΔQLN dB。
对于任意一用户侧设备与其它各用户侧设备之间的干扰过程，具体如下：
如果判断该用户侧设备的NT设备受到了其它用户侧设备的PLC设备的干扰，则AF模块在仲裁策略中应考虑其它用户侧设备的PLC设备的干扰因素，例如对PLC设备的发送PSD调整时取影响最大的SNR进行参考，且可以在xDSL设备上通过OLR进行调整。
在受到邻居用户PLC设备的干扰时，可将前面所测的SNRi,j-k/QLNi,j-k分别与所有PLC静默时测量的SNRi/QLNi计算变化量ΔSNRm＝SNRi，j_k-SNRi或ΔQLNm＝QLNi-QLNi，j_k并取其最大值max{ΔSNRm}或max{ΔQLNm}为需要对PLC设备进行调整的参考值(dB)。为了不将PLC设备的PSD降得太低导致PLC设的速率太低，AF模块可将PLC设备的发送PSD降低[max{ΔSNRm}-X]或[max{ΔQLNm}-X}dB，同时DSL设备NT发起OLR过程将其比特加载表降低X/3个比特。
另外，假设NT1用户不支持G.dpm标准，即AF模块无法直接与NT1进行消息交互。此时如果NT2用户的PLC设备对NT1产生影响时，可通过AF 与xTU-O的
Figure PCTCN2016088031-appb-000008
接口从xTU-O处获得测量结果，此时可利用DSL系统本身支持SNR或者QLN测量反馈过程。处理步骤如下：
NT2用户所有的PLC设备静默，NT1和NT2分别测量此时的SNR/QLN，AF模块分别获取测量到的SNR/QLN；
NT2的PLC设备1发送时，分别测量NT1和NT2的SNR/QLN；
NT2的PLC设备2发送时，分别测量NT1和NT2的SNR/QLN；
NT1根据所有PLC静默时的SNR/QLN与有NT2用户PLC设备发送时的SNR/QLN的比较，判别是否受其它用户侧设备的PLC的干扰；
如不受其它用户侧设备中的PLC设备的影响，则只需对NT2的用户进行调整；
如判断受其它用户侧设备中的PLC设备的影响，则需考虑对NT1进行OLR调整线路参数并在对NT2用户调整时考虑对NT1用户的影响，如取影响变化最大的ΔSNR进行PLC发送PSD调整。
特别地，如果DSL技术为G.fast，一般G.fast做线性预编码时由于高频部分的信道特性需要做功率控制。功率控制矩阵C一般是根据预编码系数P计算得出，其会直接影响G.fast线路的速率。本实施例考虑G.fast用户采用线性预编码且使用PLC设备进行网络拓展，此时可利用G.fast的功率控制特性对PLC设备产生的干扰进行结合，降低G.fast的用户感知。具体地，可如下所述步骤：
AF先进行综合控制测量各PLC设备对不同G.fast的NT的SNR/QLN影响；
对同一个NT用户在各种不同PLC设备发送情况下测得结果，如果为SNR 则取最小值，如为QLN则取最大值；
将对应的NT用户在PLC设备静默时测的SNR/QLN减去有PLC设备发送时测的SNR/QLN，得出ΔSNR/ΔQLN并对其进行排序，如从大到小顺序；
G.fast用户可由DSL局端发起TIGA进行线路参数调整，此时可将对应用户的功率控制因子Ci降低ΔSNR/N或ΔQLN/N(dB)，N＝1,2，…..可根据需要调整。
AF可根据计算出的ΔSNR/ΔQLN调整对应PLC设备的发送PSD，如将对应PLC设备的PSD提高
Figure PCTCN2016088031-appb-000009
或
Figure PCTCN2016088031-appb-000010
(dB)；
这样做的好处在于结合功率控制，不单一的降低PLC设备的PSD，可能导致PLC设备的速率降低过多，可通过G.fast系统的功率控制补偿一部分速率损失。
因此，如果DSL技术为G.fast如上述方案中描述且此时采用的是非线性预编码，如QRTHP预编码技术。如前面对非线性预编码的描述，非线性预编码由于其串行的编码结果使得进入编码的先后顺序不同，其线路速率也会有差别。此时可将将PLC设备对G.fast用户的干扰的强度按照从大到小进行排序，在该G.fast线路进行非线性预编码时按照前面的逆序进行非线性预编码，这样使得受PLC干扰强的G.fast用户速率得到一定的提升。同时对PLC设备仍然可根据AF的策略按照前面描述的算法进行PSD调整。这样将非线性预编码线序和PLC设备干扰结合，可提高部分受PLC设备干扰强的G.fast的速率，降低G.fast用户的速率降低的感知。
通过本实施例提供的数据通信的方法，所述方法包括：AF监测所述第一用户侧设备中的网络终端的第一干扰值和第二干扰值，其中，所述第一干扰值为关闭所有用户侧设备上的PLC设备后监测所述第一用户侧设备中的网络终 端的干扰值，所述第二干扰值为所述第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰，进而解决了用户侧设备与用户侧设备之间的干扰问题，可以将现有的标准提到的单用户干扰消除的解决方案扩张成可支持多用户之间干扰消除的解决方案，进而提高了用户之间的数据传输的可靠性。
本发明实施例还提供了一种通信设备，如图3所示，所述通信设备包括：
获取单元，用于监测并获取与所述通信设备相连的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，其中，所述第一干扰值为关闭所有用户侧设备上的电力线通信技术PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为与所述通信设备相连的第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；
判断单元，用于根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰。
处理单元，用于当所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰，则控制所述第二用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
进一步地，所述处理单元，具体用于所述当第一干扰值与第二干扰值的差值大于某一阈值，则确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰。
可选地，所述判断单元，还用于判断所述第一用户侧设备的网络终端是否受到所述第一用户侧设备的PLC设备的干扰。
进一步地，所述获取单元，还用于监测所述第一用户侧设备中的网络终端的第三干扰值，其中，所述第三干扰值为所述第一用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值。
进一步地，所述处理单元，还用于根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第三干扰值，确定当所述第一干扰值与第三干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰。
进一步地，所述处理单元，还用于当确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰，则控制所述第一用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
具体地，处理单元，具体用于根据所述第一干扰值和所述第二干扰值，调整所述第二用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
具体地，所述处理单元，还用于根据所述第一干扰值和所述第三干扰值，调整所述第一用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
本发明实施例提供了一种通信设备，所述通信设备通过监测所述第一用户侧设备中的网络终端的第一干扰值和第二干扰值，其中，所述第一干扰值为关闭所有用户侧设备上的PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为所述第二用户侧设备中的PLC设备对所述第一用 户侧设备中的网络终端的干扰的值；根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰，进而解决了用户侧设备与用户侧设备之间的干扰问题，可以将现有的标准提到的单用户干扰消除的解决方案扩张成可支持多用户之间干扰消除的解决方案，进而提高了用户之间的数据传输的可靠性。
如图1所示，本发明实施例还提供了一种接入设备，所述接入设备包括：数字用户线路DSL局端设备和仲裁功能模块AF，具体接入设备可以参见图1的AF，具体所述AF的结构图3所示的通信设备，其中图3的结构中描述AF的功能，以及图3对应的实施例中各个功能模块的描述，也可以参见图2以及对应于图的实施例的描述，这里就不在赘述。
通过本发明实施例提供的接入设备，解决了用户侧设备与用户侧设备之间的干扰问题，可以将现有的标准提到的单用户干扰消除的解决方案扩张成可支持多用户之间干扰消除的解决方案，进而提高了用户之间的数据传输的可靠性。
本发明实施例还提供一种通信系统，如图1所示，包括接入设备和至少两个用户侧设备，所述接入设备包括：数字用户线路DSL局端设备和仲裁功能模块AF；所述第一用户侧设备包括：网络终端，所述第二用户侧设备包括：电力线通信技术PLC设备，所述接入设备DSL局端设备包括：如上述实施例描述的通信设备，具体请参见图1-3以及与图1-3相对应的实施例的具体描述，这里就不再赘述。
通过本发明实施例提供的通信系统，解决了用户侧设备与用户侧设备之间 的干扰问题，可以将现有的标准提到的单用户干扰消除的解决方案扩张成可支持多用户之间干扰消除的解决方案，进而提高了用户之间的数据传输的可靠性。
另外，本发明实施例还提供了一种通信设备，如图4所示，所述通信设备包括：处理器、存储器和总线系统，所述处理器和所述存储器通过所述总线系统相连，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，其中，所述处理器用于：监测所述第一用户侧设备中的网络终端的第一干扰值和第二干扰值；其中，所述第一干扰值为关闭所有用户侧设备上的PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为所述第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰；确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰，则控制所述第二用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可能可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置，可通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如上述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性或其它的形式。
上述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
上述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以为个人计算机、服务器或者网络设备等，具体可以是计算机设备中的处理器)执行本发明各个实施例上述方法的全部或部分步骤。其中，而前述的存储介质可包括：U盘、移动硬 盘、磁碟、光盘、只读存储器(ROM，Read-Only Memory)或者随机存取存储器(RAM，Random Access Memory)等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (18)

  1. 一种数据通信方法，应用于包括局端侧设备和至少两个用户侧设备的系统中，其中，所述局端侧设备包括至少一个仲裁功能模块AF，所述至少两个用户侧设备中，其中第一用户侧设备包括网络终端，第二用户侧设备包括电力线通信技术PLC设备，其特征在于，所述方法包括：
    所述AF监测所述第一用户侧设备中的网络终端的第一干扰值和第二干扰值；其中，所述第一干扰值为关闭所有用户侧设备上的PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为所述第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；
    所述AF根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰；
    当所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰，则控制所述第二用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
  2. 根据权利要求1所述的数据通信方法，其特征在于，若所述AF确定第二用户侧设备的PLC设备对所述第一用户侧设备中的网络终端的干扰具体包括：
    当所述第一干扰值与第二干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰。
  3. 根据权利要求1所述的数据通信方法，其特征在于，所述方法还包括：
    确定所述第一用户侧设备的网络终端是否受到所述第一用户侧设备的 PLC设备的干扰。
  4. 根据权利要求1或者3所述的数据通信方法，其特征在于，所述方法还包括：
    所述AF监测所述第一用户侧设备中的网络终端的第三干扰值，其中，所述第三干扰值为所述第一用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值。
  5. 根据权利要求3或者4所述的方法，其特征在于，所述确定所述第一用户侧设备的网络终端是否受到所述第一用户侧设备的PLC设备的干扰具体包括：
    所述AF根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第三干扰值，确定当所述第一干扰值与第三干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰。
  6. 根据权利要求3或者5所述的方法，其特征在于，所述方法还包括：
    若所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰，则控制所述第一用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
  7. 根据权利要求1所述的数据通信方法，其特征在于，所述控制所述第一用户侧设备中的PLC设备对所述第二用户侧设备的网络终端的干扰具体包括：
    所述AF根据所述第一干扰值和所述第二干扰值，调整所述第二用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络 终端的在线重配置OLR。
  8. 根据权利要求6所述的数据通信方法，其特征在于，所述控制所述第一用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰具体包括：
    所述AF根据所述第一干扰值和所述第三干扰值，调整所述第一用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
  9. 一种通信设备，其特征在于，所述通信设备包括：
    获取单元，用于监测并获取与所述通信设备相连的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，其中，所述第一干扰值为关闭所有用户侧设备上的电力线通信技术PLC设备后监测所述第一用户侧设备中的网络终端的干扰值，所述第二干扰值为与所述通信设备相连的第二用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值；
    判断单元，用于根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第二干扰值，确定所述第一用户侧设备中的网络终端是否受到第二用户侧设备的PLC设备的干扰；
    处理单元，用于当所述AF确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰，则控制所述第二用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
  10. 根据权利要求9所述的通信设备，其特征在于，处理单元，具体用于所述当第一干扰值与第二干扰值的差值大于某一阈值，则确定所述第一用户侧设备中的网络终端受到第二用户侧设备的PLC设备的干扰。
  11. 根据权利要求9所述的通信设备，其特征在于，所述判断单元，还用于判断所述第一用户侧设备的网络终端是否受到所述第一用户侧设备的PLC设备的干扰。
  12. 根据权利要求9或者11所述的通信设备，其特征在于，
    所述获取单元，还用于监测所述第一用户侧设备中的网络终端的第三干扰值，其中，所述第三干扰值为所述第一用户侧设备中的PLC设备对所述第一用户侧设备中的网络终端的干扰的值。
  13. 根据权利要求12所述的通信设备，其特征在于，
    所述处理单元，还用于根据所述监测的第一用户侧设备中的网络终端的第一干扰值和第三干扰值，确定当所述第一干扰值与第三干扰值的差值大于某一阈值，则所述AF确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰。
  14. 根据权利要求11或者13所述的通信设备，其特征在于，
    所述处理单元，还用于当确定所述第一用户侧设备中的网络终端受到第一用户侧设备的PLC设备的干扰，则控制所述第一用户侧设备中的PLC设备对所述第一用户侧设备的网络终端的干扰。
  15. 根据权利要求9所述的通信设备，其特征在于，处理单元，具体用于根据所述第一干扰值和所述第二干扰值，调整所述第二用户侧设备中的PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
  16. 根据权利要求13所述的通信设备，其特征在于，所述处理单元，还用于根据所述第一干扰值和所述第三干扰值，调整所述第一用户侧设备中的 PLC设备的发送功率频谱密度PSD和/或发起第一用户侧设备中的网络终端的在线重配置OLR。
  17. 一种接入设备，所述接入设备包括：数字用户线路DSL局端设备和仲裁功能模块AF，其特征在于，所述AF包括如权利要求7-11的任意一通信设备。
  18. 一种通信系统，包括接入设备和至少两个用户侧设备，所述接入设备包括：数字用户线路DSL局端设备和仲裁功能模块AF；所述第一用户侧设备包括：网络终端，所述第二用户侧设备包括：电力线通信技术PLC设备，其特征在于，所述接入设备DSL局端设备包括：如权利要求7-11的任意一通信设备。
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