WO2011035597A1 - 一种建立传输无线信号的通道的方法、装置和*** - Google Patents

一种建立传输无线信号的通道的方法、装置和*** Download PDF

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Publication number
WO2011035597A1
WO2011035597A1 PCT/CN2010/073120 CN2010073120W WO2011035597A1 WO 2011035597 A1 WO2011035597 A1 WO 2011035597A1 CN 2010073120 W CN2010073120 W CN 2010073120W WO 2011035597 A1 WO2011035597 A1 WO 2011035597A1
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WO
WIPO (PCT)
Prior art keywords
distribution node
access device
frequency
modem
wireless signal
Prior art date
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PCT/CN2010/073120
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English (en)
French (fr)
Inventor
欧阳伟龙
周军
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.)
Filing date
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 EP10818291A priority Critical patent/EP2469966A1/en
Publication of WO2011035597A1 publication Critical patent/WO2011035597A1/zh
Priority to US13/426,302 priority patent/US20120176916A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the access device 100 serves as a master device for wireless access, and has the capability of communicating with the broadband access network to provide access to the Internet, and the client 102 acts as a slave device for wireless access. A connection is established with the access device 100 and accessed to the Internet via the access device 100.
  • wireless access allows users to escape the constraints of the network cable
  • the network can be accessed anywhere within the wireless coverage, but since the wireless channel is susceptible to obstacles, such as walls, these obstacles will cause severe performance degradation,
  • the home environment varies widely, and the floor plan, size, and wall structure are different, so it is impossible to satisfy all households with one type of access device.
  • In order to make WiFi have better wall penetration capability and greater coverage one way is to directly increase the transmission power, directly increase the transmission power, require a larger antenna, and the cost will increase.
  • electromagnetic waves will affect the human body. Harmful effects are generated, so that the increase in transmission power will also increase the damage to the human body; another method is to use a repeater, as shown in FIG.
  • the repeater 101 after receiving the wireless signal of the access device 100, the repeater 101 can Local amplification is performed, and then transmitted, so that the wireless signal received by the client 102 is not attenuated too much, thereby solving the problem that the wireless signal is attenuated too much due to obstacles, excessive coverage, or irregular home environment, but
  • the repeater can only amplify the received signal and cannot perform the received signal.
  • the improvement is such that the noise introduced by the wireless channel is also amplified at the same time, so it merely increases the coverage of the wireless signal and does not improve the transmission performance of the WiFi.
  • Embodiments of the present invention provide a method, apparatus, and system for establishing a channel for transmitting a wireless signal.
  • An embodiment of the present invention provides a method for establishing a channel for transmitting a wireless signal, where the channel relates to a wired medium that connects the access device and the distribution node, and the method includes the following steps:
  • the access device acquires a communication performance parameter of the distribution node
  • the access device adjusts parameters of the access device according to the frequency, and sends a message carrying a frequency parameter to the distribution node, so that the distribution node adjusts parameters of the distribution node according to the frequency parameter, thereby A channel for transmitting a wireless signal is established in the wired medium.
  • An embodiment of the present invention provides an access device, including:
  • a modem configured to perform information interaction and processing through a wired medium and a distribution node; a node management unit, configured to acquire, by the modem, a communication performance parameter of the distribution node, according to the communication performance parameter and a spectrum that the modem can work
  • the range determines a frequency used to transmit a wireless signal between the modem and the distribution node, adjusting parameters of the modem based on the frequency, and transmitting, by the modem, a message carrying a frequency parameter to the distribution node.
  • An embodiment of the present invention provides a communication system of a wireless network, including an access device and a distribution node, where the access device and the distribution node are connected by a wired medium, where
  • the access device is configured to acquire a communication performance parameter of the distribution node, and determine, according to the parameter and a spectrum range in which the access device can work, a frequency used for transmitting a wireless signal by using the wired medium, according to the Frequency-adjusting parameters of the access device, and sending, to the distribution node, a message carrying a frequency parameter;
  • the distribution node is configured to adjust parameters of the distribution node according to the frequency.
  • the method, device and system provided by the embodiments of the present invention use a wired medium to transform a wireless signal and transmit it to a remote distribution node, and automatically establish a transmission channel between the access device and the distribution node.
  • the node converts the signal from the transmission channel to the original frequency, thereby transmitting. Since the transmission channel is bidirectional, the wireless signal of the distribution node can also be transmitted to the access device through the transmission channel, thus avoiding various wireless channels. Attenuation can improve the transmission performance of wireless signals. It can also improve the wall-through capability of wireless signals such as WiFi without modifying the wireless air interface protocol and increasing the transmission power, thereby eliminating the wireless blind zone.
  • 1 is a schematic diagram of an architecture of an existing wireless network
  • FIG. 2 is a schematic diagram of an existing network architecture for eliminating a wireless dead zone
  • 3 is a schematic diagram of spectrum resources of a wired medium
  • FIG. 4 is a schematic diagram of an architecture of a wireless network according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic diagram of a process of up-converting and down-converting according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of frequency band planning of a wired medium according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a network architecture when a gateway device and an access device are independent according to an embodiment of the present disclosure
  • FIG. 9 is a schematic diagram of a structure of an access device according to Embodiment 2 of the present invention.
  • FIG. 10 is a schematic diagram showing the structure of a modem according to Embodiment 2 of the present invention.
  • FIG. 11 is a schematic diagram of a structure of a signal transmission unit according to Embodiment 2 of the present invention.
  • FIG. 12 is a schematic diagram of a structure of a distribution node according to Embodiment 3 of the present invention.
  • FIG. 13 is a schematic diagram of an architecture of a communication system according to an embodiment of the present invention.
  • the embodiment of the present invention utilizes these wired media to achieve the purpose of eliminating wireless blind zones, wherein the wireless blind zone refers to an area in the wireless network where the signal is very weak or even absent.
  • Embodiments of the present invention will exemplify how to use a power line as an example to eliminate a wireless dead zone. Since the available spectrum resources of other wired media are similar to power lines, when the wired medium is a telephone line, a coaxial line, or a plastic optical fiber, You can refer to the implementation of the power line.
  • the access device 400 accesses the broadband access network, and can communicate with the client 102 through the antenna.
  • the client 102 is also provided with an antenna for transmitting and receiving wireless signals due to obstacles (such as in FIG. 4).
  • the reason for the wall SO after the wireless signal transmitted from the antenna of the access device 400 passes through the wall and enters the room where the client 102 is located, becomes very weak or even completely disappears, causing the area where the client 102 is located to become a wireless blind spot.
  • a distribution node 402 is disposed in the room where the client 102 is located, and the access device 400 and the distribution node 402 are connected by the power line 403.
  • the access device 400 transmits the wireless signal to the distribution node 402 through the power line 403. , transmitted by the distribution node 402 to the client 102 through the antenna, thereby eliminating wireless blind spots caused by obstacles.
  • the embodiment provides a method for establishing a channel for transmitting a wireless signal. As shown in FIG. 5, the method includes:
  • Step 50 The access device acquires parameters of the distribution node.
  • the parameter of the distribution node acquired by the access device is a communication performance parameter of the distribution node, including the type of the antenna of the distribution node 402, the operating frequency of the antenna of the distribution node 402, the operation mode of the modem of the distribution node 402, and the distribution node 402.
  • the access device 400 may acquire the communication performance parameter of the distribution node 402 by using the access device. 400 sends a parameter request message to the distribution node 402 through the power line, and the distribution node 402 sends a parameter response message, and the sent parameter response message carries the communication performance parameter of the distribution node 402.
  • the method for the access device 400 to obtain the communication performance parameter of the distribution node 402 may also be that the distribution node 402 transmits a message carrying the communication performance parameter to the access device 400 through the antenna.
  • Step 52 The access device determines, according to the parameter and a spectrum range in which the access device can work, a frequency used to transmit a wireless signal by using the wired medium.
  • the access node 402 may send a parameter confirmation message to the distribution node 402.
  • the preset conditions herein may be the available operating frequency set in advance to the distribution node 402, the mode of operation of the modem of the distribution node 402, and the spectral range over which the modem of the distribution node 402 can operate, and the like.
  • the access device 400 determines the spectrum resources available for communication between the access device 400 and the distribution node 402 based on the operating spectrum range of the modem of the access device 400 and the operating spectrum range of the modem of the distribution node 402.
  • the access device 400 can also perform channel testing to obtain the actual available spectrum resources of the channel, which is optional. If channel test needs to be performed, the access device 400 sends a channel test request message to the distribution node 402, informing the distribution node 402 to initiate the channel test in synchronization.
  • the distribution node 402 adjusts the channel estimation module parameters according to the preset parameters, and sends a channel test confirmation message to the access device 400. After receiving the channel test confirmation message, the access device 400 adjusts the access device 400 according to the preset parameters.
  • the parameters of the channel estimation module, starting with the distribution node 402, begin channel testing, and methods for channel testing should be known to those of ordinary skill in the art.
  • Step 54 The access device adjusts parameters of the access device according to the spectrum resource.
  • the access device 400 obtains the spectrum range that can be communicated with the distribution node 402 on the power line according to the parameter reported by the distribution node 402 or according to the result of the channel test. It is assumed that the available spectrum range is 0 to 50 MHz, and the access device 400 is configured according to the pre-configuration.
  • the principle of reallocating the frequency resource for example, the pre-configuration principle may be that the distribution node preferentially uses a lower spectrum range, etc., so that the access device 400 can allocate a frequency bandwidth of 0-20 MHz to the transmission wireless signal. A spectrum bandwidth of 20 to 50 MHz is allocated for transmission of a wideband signal. Of course, this is merely an example of the embodiment.
  • the access device 400 configures parameters of the modem, such as setting the spectrum range of the communication processing module in the modem to 20 to 50 MHz, and the modem
  • the working mode of the selector in the middle is set to double-receive dual-issue, set the down-conversion frequency of the inverter in the modem to 0 ⁇ 20MHz, and set the up-conversion frequency in the modem to 2.4GHz.
  • Step 56 The access device sends, to the distribution node, a message carrying the spectrum resource, so that the distribution node modulates parameters of the distribution node according to the frequency, thereby establishing a channel for transmitting a wireless signal in the wired medium.
  • the access device 400 After the configuration of the parameters of the modem is completed, the access device 400 sends a parameter configuration request message to the access device 400. After receiving the parameter configuration request message, the distribution node 402 configures the parameters of the modem of the distribution node 402, and configures the content and connection. The configuration contents of the incoming device 400 are the same.
  • the parameter configuration confirmation message is sent to the access device 400. If the configuration fails, the parameter configuration confirmation message carrying the error information is sent to the access device 400.
  • the access device 400 After the access device 400 is powered on, the information is exchanged with the client 102 through the antenna to periodically detect the text. Since the network node in the point-to-multipoint network, the master node can send packets to the slave node at any time, and the slave node needs to The packet sent by the access device 400 carries the time slice information.
  • the distribution node 402 can be powered on, and the distribution node 402 and the client 102 are in the same room. After power up, distribution node 402 enters a pre-registration state.
  • the distribution node 402 detects parameters of hardware such as an antenna and a modem, including the type of the antenna (single antenna, etc.), the spectrum range in which the modem can operate, the received power and the transmission power of the antenna, etc., and can also detect whether each hardware can enter the work, etc. If there is a problem with the detection hardware, the alarm program is started and a hardware error is displayed.
  • the distribution node 402 After the distribution node 402 confirms that there is no problem in the hardware, it detects whether there is a communication signal on the power line, and if so, sets the parameters of the modem, including: setting the state of the selector to disconnect and setting the state of the inverter to off, etc. Upon completion, the distribution node 402 waits for the discovery of the access device 400. Message.
  • Distribution node 402 is registered:
  • the distribution node 402 After receiving the discovery message from the access device 400, the distribution node 402 enters the registration state.
  • the distribution node 402 synchronizes the communication signals based on the discovery message, and those skilled in the art will be aware of the process of synchronization.
  • the distribution node 402 sends a registration request message in the time slice allocated by the access device 400.
  • the registration request message carries the node identification information of the distribution node 402, including the media access address of the distribution node 402 (such as the Ethernet of the distribution node 402).
  • the access device 400 After receiving the registration request message of the distribution node 402, the access device 400 determines that the distribution node 402 can register according to the node identification information in the registration request message and the preset condition, and assigns the slave node identification number to the distribution node 402.
  • the distribution node 402 sends a registration response message carrying the slave node identification number; if the registration condition is met, the registration response message carrying the error information is sent to the distribution node 402, so that the distribution node 402 adjusts according to the error information.
  • the WiFi network has two antennas, one is the antenna that is connected to the access device 400, and the other is the antenna of the distribution node 402 that the access device 400 uses the power line to pull away by frequency shifting, thereby solving the problem of the wireless signal passing through the wall.
  • the wireless blind zone in the room is eliminated, and the schematic diagram of the frequency shifting of the receiving device 400 for receiving and transmitting the wireless signal is as shown in FIG. 6.
  • the access device In order to support access of multiple distribution nodes, the access device should be able to periodically broadcast spectrum allocation information on a fixed channel or a fixed frequency. Therefore, a fixed channel or frequency band can be set periodically in the spectrum range of the power line. Broadcast spectrum allocation information, as shown in Figure 7. Since the distribution node has already joined and starts to tunnel the wireless signal, after the spectrum changes, the access device periodically broadcasts new spectrum allocation information to the newly-powered distribution node, so that the newly-powered distribution node knows the communication frequency band. And start the synchronization process of the communication signal.
  • the access device described above has the function of a gateway.
  • the access device when the access device is independent of the gateway device, as shown in FIG. 8, when the H-distributed node 804 is powered on, the access device 800 acts as the master device of the distribution node 804.
  • the distribution node 804 performs control and management as a slave device of the gateway device 802.
  • both the access device 800 and the distribution node 804 need to be registered to the gateway device 802 through the power line, and the registration process and the access device have the gateway function distribution.
  • the process of registering a node to an access device is similar.
  • the gateway device 802 After the access device 800 and the distribution node 804 are registered on the gateway device 802, the gateway device 802 is registered according to The terminal type in the request packet, the access device and the distribution node are identified, and the parameter configuration request message is sent to the access device 800.
  • the parameter configuration request message carries the communication address of the distribution node 804 and the access device 800, which may be The media access control MAC address of the distribution node 804 and the MAC address of the access device 800, and the like.
  • the access device 800 establishes a transmission channel according to the communication address of the distribution node 804 and the distribution antenna 804. The process of establishing the transmission channel is described in the above description. The difference is that when the channel test needs to be performed, the gateway device 802 sends a channel test request report.
  • the access device 800 is configured to authorize the access device 800 to initiate the channel test, and the access device 800 initiates the channel test.
  • the access device 800 sends a channel test acknowledgement message to the gateway device 802, and the channel test acknowledgement packet carries Accessing the available spectrum resources of the channel between the device 800 and the distribution node and the spectrum resources of the signal tunneling, the gateway device 802 determines whether the spectrum resources meet the requirements according to the pre-configured information, and if so, adjusts the parameters of the modem to the power line.
  • the slave node including the access device and the distribution node
  • the power line receives the parameter configuration request message, and then reconfigures the modem parameter.
  • the method for establishing a sneak channel uses a wired medium to transform a wireless signal and then transmit it to a remote distribution node, and automatically establishes a sneak channel between the access device and the distribution node, and the distribution node will be derived from the rumor.
  • the signal of the channel is converted into the original frequency to be transmitted. Since the transmission channel is bidirectional, the wireless signal of the distribution node can also be transmitted to the access device through the transmission channel, thereby avoiding various attenuation of the wireless channel and improving wireless.
  • the transmission performance of the signal can also improve the wall-through capability of wireless signals such as WiFi without modifying the wireless air interface protocol and without increasing the transmission power, thereby achieving the purpose of eliminating the wireless blind zone.
  • the second embodiment of the present invention provides an access device in a wireless network.
  • the method includes: a modem 900 and a node management unit 902.
  • the access device may also include a wideband signal processing unit 906, a wireless signal processing unit 904, a configuration management unit 910, an antenna 908, and the like, wherein the antenna 908 is coupled to the wireless signal processing unit 904 via a modem 900.
  • the modem 900 is configured to receive a message from a distribution node through a wired medium, and send a message to the distribution node through a wired medium, where the wired medium may be a power line, a telephone line, a coaxial line, or a plastic optical fiber.
  • the power line is exemplified below.
  • the broadband processing unit 906 is configured to process broadband signals, including transmission and reception of Ethernet packets and IP packets, processing of Ethernet texts and IP addresses, and address translation.
  • An antenna 908 is used for transmitting and receiving wireless signals.
  • the wireless signal processing unit 904 is configured to process the wireless signal received by the antenna 908.
  • a configuration management unit 910 is configured to configure parameters of the node management unit 902 and the modem 900.
  • the modem 900 is also used to process the wideband signal and the wireless signal.
  • FIG. 10 is a schematic structural diagram of the modem 900, including: a communication processing module 10 and a signal transmission module 14, wherein
  • the signal transmission module 14 is configured to perform signal interaction and processing by using the power line and the distribution node, and specifically includes: performing a down conversion process on the wireless signal of the wireless signal processing unit 904, and transmitting the processed wireless signal to the distribution through the power line a node; performing up-conversion processing on the wireless signal from the power line, transmitting the processed wireless signal to the wireless signal processing unit 904; and transparently transmitting the wideband signal from the communication processing module 10.
  • FIG. 11 A schematic diagram of the structure of the signal transmission module 14 is shown in FIG. 11, wherein
  • the selector 14-1 is used to connect the inverter 14-2 and/or the antenna 908.
  • the configuration management unit 910 controls the selector 14-1 to connect the antenna to disconnect the inverter 14-2, so that the router 14-1 directly transmits the wireless signal of the wireless signal processing unit 904. Transmitted to the antenna 908, and transparently transmits the wireless signal of the antenna 908 to the wireless signal processing unit 904; when the distributed node is powered, the configuration management unit 910 controls the selector 14-1 to connect the inverter 14-2 and the antenna 908, At this time, the router 14-1 may directly transmit the wireless signal of the wireless signal processing unit 904 to the antenna 908 and transparently transmit the wireless signal of the antenna 908 to the wireless signal processing unit 904.
  • the wireless signal processing unit 904 may also be used. The wireless signal is transmitted to the power line through the frequency converter 14-2 and the wireless signal on the power line is transmitted to the wireless signal processing unit 904 via the frequency converter 14-2.
  • the frequency converter 14-2 is configured to down-convert the wireless signal from the wireless signal processing unit 904 to the power line according to the parameter configured by the configuration management unit 910, and send the wireless signal from the power line according to the parameter configured by the configuration management unit 910. The frequency conversion is sent to the wireless signal processing unit 904.
  • the communication processing module 10 is connected to the broadband signal processing unit 906 as a communication interface of a local area network such as Ethernet for carrying broadband services, and performs signal exchange with the distributed nodes through the signal transmission module 14.
  • the modem 900 can also include a channel estimation module 12 for channel testing the power line to obtain actual spectrum resources on the power line, as will be appreciated by those of ordinary skill in the art in terms of channel testing.
  • the node management unit 902 is configured to send a parameter request message to the distribution node by using the modem 900, receive a parameter response message from the distribution node by using the modem 900, and determine a spectrum used by the modem 900 to communicate with the distribution node according to the parameter response message. Range, the parameter configuration request message carrying the spectrum range is sent to the distribution node by the modem 900.
  • the node management unit 902 is further configured to: after receiving the parameter response message, determine whether to allow the distribution node to access according to the condition set by the configuration management unit 910, and if so, configure the communication processing module 10 in the modem 900 and the signal transmission
  • the working mode is set to double-receiving, and the up-conversion of the inverter 14-2 is set to 2.4 GHz, and the down-conversion of the inverter 14-2 is set to 0 to 20 MHz.
  • the access device provided in this embodiment can transmit a wideband signal, transmit a wireless signal through a wired medium, and transmit a wireless signal to a remote distributed node through a wired medium, thereby improving the wall penetration capability of the wireless signal and eliminating wireless.
  • the access device provided in this embodiment can also automatically allocate spectrum resources, thereby establishing and distributing a tunneling channel between the nodes.
  • the third embodiment of the present invention provides a distribution node, and the provided access device can connect to the access device through a wired medium.
  • the device includes a modem 900, a configuration management unit 22, an antenna 908, and a broadband signal processing unit 906. .
  • the functions of the modem 900, the antenna 908, and the wideband signal processing unit 906 have been described above.
  • the configuration management unit 22 is configured to obtain, after the distribution node is powered on, parameters of the hardware of the distribution node, including the type of the antenna 908, the frequency range in which the modem 900 can operate, the rated transmit power and the received power of the antenna 908, and the like. After obtaining the parameters of the hardware, it is detected that the hardware can not enter the work to start the alarm program.
  • the configuration management unit 22 is further configured to detect, by the modem 900, whether there is a communication signal on the wired medium after power-on, and if so, to set parameters of the modem, including: setting a path selector The status is disconnected and the status of the inverter is set to off. After the setting is completed, the device waits for the discovery packet of the access device. After receiving the discovery packet, it registers with the access device through the modem 900. The registration process is implemented. Example 1 has been described.
  • the configuration management unit 22 is further configured to receive a parameter request packet of the access device, and send a parameter response packet to the access device, where parameters related to the parameter response packet are described above.
  • Configuration management unit 22 may also send a message carrying the communication performance parameters to the access point via antenna 908.
  • the configuration management unit 22 is further configured to: after receiving the parameter configuration request message of the access device, configure the parameters of the modem 900, such as adjusting the spectrum range carried in the request message according to the parameter configuration, and adjusting the communication processing module of the modem 900.
  • the distribution node provided by the implementation of the invention can automatically transmit the wireless signal through the wired medium, and can automatically configure the parameters of the modem, thereby automatically establishing a transmission channel with the access device, and extending the wireless signal of the access device through the established transmission channel, thereby improving The ability of the wireless signal to penetrate the wall can also increase the coverage of the wireless signal.
  • the fourth embodiment of the present invention provides a communication system for a wireless network. As shown in FIG. 13, the access device 30 and the distribution node 32 are connected. The access device 30 and the distribution node 32 are connected by a wired medium 31.
  • the wired medium 31 may be a power line.
  • the telephone line, the coaxial line, or the plastic optical fiber, etc., the power line is taken as an example in this embodiment.
  • the access device 30 is configured to send a parameter request message to the distribution node 32 through the power line 31, and after receiving the parameter response message of the distribution node 32, determine, according to the parameter response message, the communication between the wired medium 31 and the distribution node 32.
  • the parameter of the access device 30 is configured according to the obtained spectrum resource, and the parameter configuration request message carrying the spectrum resource is sent to the distribution node 32.
  • the access device 30 is further configured to send, by the power line 31, the discovery message carrying the time slice information to the distribution node 32, and receive the registration request message sent by the distribution node 32 in the time slice through the power line 31, the registration request message.
  • the document carries the identification information of the distribution node 32. If it is determined that the identification information satisfies the pre-set condition, the distribution node 32 is assigned a slave node identification number, and the distribution node 32 is sent a registration response message including the slave node identification number. Establishing the identification information and the slave identification number Correspondence, thereafter, access device 30 communicates with distribution node 32 by the slave identification number.
  • the distribution node 32 is configured to configure parameters of the distribution node according to the spectrum resource in the parameter request configuration message.
  • the wireless signal is pulled to the set distribution node through the power line, and is transmitted through the antenna of the distribution node.
  • the wireless signal can be transmitted without loss, and the transmission performance of the wireless signal is improved. It can also improve the wall-through capability of wireless signals and achieve the goal of eliminating wireless blind spots.

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Abstract

本发明公开一种建立传输无线信号的通道的方法、装置和***，所述通道涉及连接接入设备和分布节点的有线介质，方法包括步骤：接入设备获取分布节点的通信性能参数；接入设备根据通信性能参数以及接入设备可工作的频谱范围确定通过有线介质传输无线信号所使用的频率；接入设备根据所述频率调整接入设备的参数，向分布节点发送携带有所述频率的消息，以使得分布节点根据所述频率调整分布节点的参数，从而在有线介质中建立传输无线信号的通道。本发明所提供的方法、装置和***，通过有线介质传输无线信号，能够自动配置调制解调器的参数，自动建立遂传通道，可以提高无线信号的穿墙能力，还能提高无线信号的覆盖范围。

Description

一种建立传输无线信号的通道的方法、 装置和***
本申请要求于 2009年 9月 23日提交中国专利局、申请号为 200910190707.2、 发明名称为"一种建立传输无线信号的通道的方法、装置和***"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 本发明涉及通信领域， 尤其涉及建立传输无线信号的通道的方法、 装置和 ***。
背景技术
802.11标准 WiFi ( Wireless Fidelity ) 已经被广泛应用到家庭网络中， 可以 为用户提供高速无线接入，便携机、 家庭网关、手机等都已经集成了 WiFi功能。 家庭无线网络的架构如图 1所示， 接入设备 100作为无线接入的主设备， 具备 与宽带接入网络通信以提供国际互联网的接入能力， 客户端 102作为无线接入 的从属设备， 与接入设备 100建立连接， 并通过接入设备 100接入到国际互联 网。
虽然无线接入使得用户逃脱了网线的束缚， 可以在无线覆盖范围内的任意 地方访问网络， 但是由于无线信道容易受障碍物的影响， 例如墙壁等， 这些障 碍物将导致性能严重下降， 同时由于家庭环境千差万别， 户型结构、 面积大小、 墙壁结构等都不同，因此无法用一种规格的接入设备满足所有的家庭。要让 WiFi 具备更好的穿墙能力以及更大的覆盖范围， 一种办法是直接加大发射功率，直接 加大发射功率， 需要更大的天线， 成本会增加， 同时由于电磁波会对人体会产 生有害的影响， 因此加大发射功率对人体的伤害也会加大； 另一种方法是使用 中继器， 如图 2所示， 中继器 101接收接入设备 100的无线信号后， 能够实现 本地放大， 然后再发射出去， 这样， 客户端 102 收到的无线信号不至于衰减太 大， 从而解决障碍物、 覆盖范围过大或家庭环境不规则等造成无线信号衰减太 大的问题， 但是中继器只能对接收的信号进行放大， 无法对接收到的信号进行 改善， 从而无线信道引入的噪声也同时被放大， 因此它仅仅是增加了无线信号 的覆盖范围， 并没有提升 WiFi的传送性能。
发明内容 本发明实施例提供一种建立传输无线信号的通道的方法、 装置和***。 本发明一个实施例提供一种建立传输无线信号的通道的方法， 所述通道涉 及连接接入设备和分布节点的有线介质， 所述方法包括步骤：
所述接入设备获取分布节点的通信性能参数；
所述接入设备根据所述通信性能参数以及所述接入设备可工作的频谱范围 确定通过所述有线介质传输无线信号所使用的频率；
所述接入设备根据所述频率调整所述接入设备的参数， 向分布节点发送携 带有频率参数的消息， 以使得所述分布节点根据所述频率参数调整所述分布节 点的参数， 从而在所述有线介质中建立传输无线信号的通道。
本发明一个实施例提供一种接入设备， 包括：
调制解调器， 用于通过有线介质和分布节点进行信息交互及处理； 节点管理单元， 用于通过所述调制解调器获取所述分布节点的通信性能参 数， 根据所述通信性能参数以及所述调制解调器可工作的频谱范围确定在所述 调制解调器和所述分布节点之间传输无线信号所使用的频率， 根据所述频率调 整所述调制解调器的参数， 通过所述调制解调器向所述分布节点发送携带有频 率参数的消息。
本发明一个实施例提供一种无线网络的通信***， 包括接入设备和分布节 点， 所述接入设备和所述分布节点通过有线介质相连， 其中，
所述接入设备， 用于获取所述分布节点的通信性能参数， 根据所述参数以 及所述接入设备可工作的频谱范围确定通过所述有线介质传输无线信号所使用 的频率， 根据所述频率调整所述接入设备的参数， 向所述分布节点发送携带有 频率参数的消息；
所述分布节点， 用于根据所述频率调整所述分布节点的参数。
本发明实施例提供的方法、 装置和***， 利用有线介质将无线信号变换后 传到远端的分布节点， 自动建立接入设备和分布节点之间的遂传通道， 由分布 节点将来自遂传通道的信号变换成原来的频率， 从而发射， 由于遂传通道是双 向的， 分布节点的无线信号也可以通过遂传通道传输给接入设备， 这样避免了 无线信道的各种衰减， 能提高无线信号的传输性能， 还能够在不修改无线空口 协议以及不增加发送功率的前提下， 提高 WiFi等无线信号的穿墙能力， 从而达 到消除无线盲区的目的。
附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施 例或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 出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1为现有的无线网络的架构的示意图；
图 2为现有的消除无线盲区的网络架构的示意图；
图 3为有线介质的频谱资源的示意图；
图 4为本发明实施例提供的无线网络的架构的示意图；
图 5为本发明实施例一提供的方法的流程图；
图 6为本发明实施例提供的上变频与下变频的过程的示意图；
图 7为本发明实施例提供的有线介质的频段规划示意图；
图 8 为本发明实施例提供的网关设备与接入设备独立时的网络架构的示意 图；
图 9为本发明实施例二提供的接入设备的结构的示意图；
图 10为本发明实施例二提供的调制解调器的结构的示意图；
图 11为本发明实施例二提供的信号遂传单元的结构的示意图；
图 12为本发明实施例三提供的分布节点的结构的示意图；
图 13为本发明实施例提供的通信***的架构的示意图。
具体实施例 下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 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作出创造 性劳动的前提下所获得的所有其他实施例， 都属于本发明保护的范围。 在家庭的布线中， 电力线、 电话线、 同轴线以及塑料光纤等有线介质具备 相似的拓朴结构， 而且具备类似的可用频谱资源， 如图 3 所示。 电力线、 电话 线、 同轴线以及塑料光纤的任意两点都可以直接通信， 任意点都可以作为服务 端或者客户端。
由于电力线、 电话线、 同轴线以及塑料光纤等有线介质可以布线到家庭的 每一个角落， 而且可以将无线信号无损耗的传输到远端， 即具备无线信号遂传 的功能， 正是因为这些特点， 本发明实施例利用这些有线介质达到消除无线盲 区的目的， 其中， 无线盲区是指无线网络中信号非常微弱甚至不存在的区域。 本发明实施例将以电力线作为举例来阐明如何利用有线介质消除无线盲区， 由 于其他有线介质的可使用的频谱资源和电力线类似， 因此， 当有线介质为电话 线、 同轴线或者塑料光纤时， 可以参照电力线的实现方式。
如图 4所示， 接入设备 400接入宽带接入网， 通过天线可以和客户端 102 进行通信， 客户端 102也设置有天线， 用于收发无线信号， 由于障碍物（如图 4 中的墙壁 SO ) 的原因， 从接入设备 400的天线所传输出来的无线信号穿过墙壁 进入客户端 102 所在的房间后， 变得非常微弱甚至完全消失， 导致客户端 102 所在的区域成为无线盲区， 为消除无线盲区， 本发明实施例在客户端 102 所在 的房间设置一分布节点 402 , 用电力线 403连接接入设备 400和分布节点 402 , 接入设备 400通过电力线 403将无线信号传输给分布节点 402, 由分布节点 402 通过天线发射给客户端 102 , 以此消除因障碍物造成的无线盲区。
在通过电力线连接接入设备 400和分布节点 402后， 需要在接入设备 400 和分布节点 402之间建立传输无线信号的通道， 也即建立遂传通道， 建立的遂 传通道可以无损耗的传输无线信号。 本实施例提供一种建立传输无线信号的通 道的方法， 如图 5所示， 包括：
步骤 50, 接入设备获取分布节点的参数；
这里， 接入设备获取的分布节点的参数为分布节点的通信性能参数， 包括 分布节点 402的天线的类型、 分布节点 402的天线的工作频率、 分布节点 402 的调制解调器的工作模式以及分布节点 402的调制解调器可工作的频谱范围等。
接入设备 400获取分布节点 402的通信性能参数的方法可以是由接入设备 400通过电力线向分布节点 402发送参数请求报文，分布节点 402发送参数响应 报文， 发送的参数响应报文中携带有分布节点 402的通信性能参数。
接入设备 400获取分布节点 402的通信性能参数的方法还可以是在分布节 点 402通过天线向接入设备 400发送携带有通信性能参数的消息。
步骤 52, 接入设备根据所述参数以及所述接入设备可工作的频谱范围确定 通过所述有线介质传输无线信号所使用的频率；
接入设备 400判断分布节点 402上报的参数满足预设的条件后， 可以向分 布节点 402发送参数确认艮文。
这里的预设的条件可以是预先给分布节点 402设置的可用工作频率、 分布 节点 402的调制解调器的工作模式以及分布节点 402的调制解调器可工作的频 谱范围等。
接入设备 400根据接入设备 400的调制解调器的工作频谱范围以及分布节 点 402的调制解调器的工作频谱范围确定在接入设备 400和分布节点 402之间 通信可使用的频谱资源。 接入设备 400还可以进行信道测试， 以获取信道的实 际可用的频谱资源， 这一过程为可选的。 如果需要执行信道测试， 接入设备 400 向分布节点 402发送信道测试请求 文， 通知分布节点 402同步启动信道测试。 分布节点 402根据预设的参数调整信道估计模块参数， 向接入设备 400发送信 道测试确认报文， 接入设备 400 收到信道测试确认报文后， 根据预设的参数调 整接入设备 400的信道估计模块的参数， 与分布节点 402同步开始信道测试， 关于信道测试的方法， 本领域普通技术人员都应知悉。
步骤 54, 所述接入设备根据所述频谱资源调整所述接入设备的参数。
接入设备 400根据分布节点 402上报的参数、 或者根据信道测试的结果， 获取电力线上能与分布节点 402进行通信的频谱范围， 假设可用的频谱范围为 0~50MHz, 接入设备 400根据预先配置的原则对频语资源进行重新分配， 比如 预先配置的原则可以是分布节点优先使用较低的频谱范围等， 这样， 接入设备 400可以将 0~20MHz的频语带宽分配给传输无线信号使用，将 20~50MHz的频 谱带宽分配给传输宽带信号使用， 当然， 这仅仅是本实施例的一个举例。
在对频谱资源进行重新分配后， 接入设备 400 配置调制解调器的参数， 比 如将调制解调器中的通信处理模块的频谱范围设置成 20~50MHz,将调制解调器 中的选路器的工作模式设置为双收双发， 将调制解调器中的变频器的下变频频 率设置为 0~20MHz, 以及将调制解调器中的上变频频率设置为 2.4GHz等。
步骤 56, 接入设备向分布节点发送携带有所述频谱资源的消息， 以使得所 述分布节点根据所述频率调制所述分布节点的参数， 从而在所述有线介质中建 立传输无线信号的通道。
接入设备 400对调制解调器的参数配置完成后， 向接入设备 400发送参数 配置请求报文， 分布节点 402收到参数配置请求报文后， 配置分布节点 402的 调制解调器的参数， 配置的内容与接入设备 400的配置内容一致。
分布节点 402配置成功后， 向接入设备 400发送参数配置确认报文， 如果 配置失败， 则向接入设备 400发送携带错误信息的参数配置确认报文。
在建立遂传通道之前还包括接入设备的启动、 分布节点的预注册以及分布 节点的注册过程， 分别介绍如下：
( 1 )启动接入设备 400:
接入设备 400通电后， 通过天线与客户端 102进行信息交互， 周期性探测 文， 由于在点到多点的网络拓朴中， 主节点可以随时向从节点发送报文， 而从 节点需要在主节点分配的时间片内发送报文， 因此， 接入设备 400发送的发现 报文中携带有时间片信息。
( 2 )分布节点 402进入预注册状态：
客户端 102显示信号比较弱或者没有信号时， 可以将分布节点 402接通电 源， 分布节点 402与客户端 102处再同一个房间。 通电后， 分布节点 402进入 预注册状态。
分布节点 402检测天线和调制解调器等硬件的参数， 包括天线的类型 （单 天线等）、 调制解调器可工作的频谱范围、 天线的接收功率和发送功率等， 还可 以检测各个硬件是否可以进入工作等， 如果检测硬件有问题， 则启动报警程序， 显示硬件错误。
分布节点 402确认硬件没有问题后， 探测电力线上是否有通信信号， 如果 有， 则对调制解调器的参数进行设置， 包括： 设置选路器的状态为断开和设置 变频器的状态为关闭等， 设置完成后， 分布节点 402等待接入设备 400的发现 报文。
( 3 )分布节点 402进行注册：
分布节点 402收到来自接入设备 400的发现报文后， 进入注册状态。
分布节点 402根据发现报文实现通信信号的同步， 关于同步的过程， 本领 域普通技术人员都应知悉。 分布节点 402在接入设备 400分配的时间片内发送 注册请求报文， 注册请求报文中携带有分布节点 402 的节点标识信息， 包括分 布节点 402的媒体访问地址（如分布节点 402的以太网媒体访问地址或者分布 节点 402的硬件标识号等）、 分布节点 402的类型和分布节点 402的序列号等。
接入设备 400收到分布节点 402的注册请求报文后， 根据注册请求报文中 的节点标识信息以及预设的条件判断分布节点 402可以注册后，为分布节点 402 分配从节点标识号， 向分布节点 402发送携带有从节点标识号的注册响应报文； 如果满足注册条件， 则向分布节点 402发送携带有错误信息的注册响应报文， 以便于分布节点 402根据错误信息进行调整。
这样， WiFi网络有两个天线， 一个为接入设备 400自带的天线， 另一个为 接入设备 400通过频语搬移利用电力线拉远的分布节点 402的天线， 解决了无 线信号的穿墙问题， 从而消除了室内的无线盲区， 接入设备 400接收和发送无 线信号的频语搬移的示意图如图 6所示。
为了能支持多个分布节点的接入， 接入设备要能够在固定的信道或固定的 频率上周期性广播频谱分配信息， 因此， 可以在电力线的频谱范围内设置固定 的信道或者频段来周期性广播频谱分配信息， 如图 7 所示。 由于已经有分布节 点的加入并开始隧传无线信号， 这样在频谱发生改变后， 接入设备要定时广播 新的频谱分配信息给刚上电的分布节点， 让刚上电的分布节点知道通信频段并 启动通信信号的同步过程。
上面所描述的接入设备具备网关的功能， 当接入设备独立于网关设备时， 如图 8所示， H没分布节点 804上电， 则接入设备 800作为分布节点 804的主 设备， 对分布节点 804进行控制和管理， 同时作为网关设备 802的从设备， 此 时， 接入设备 800和分布节点 804都需要通过电力线注册到网关设备 802上， 注册过程与接入设备具备网关功能时分布节点注册到接入设备的过程类似。 接 入设备 800和分布节点 804在网关设备 802上注册后， 网关设备 802根据注册 请求报文中的终端类型， 识别接入设备和分布节点， 向接入设备 800发送参数 配置请求报文， 参数配置请求报文中携带有分布节点 804和接入设备 800的通 信地址，可以是分布节点 804的媒体访问控制 MAC地址和接入设备 800的 MAC 地址等。
接入设备 800根据分布节点 804的通信地址与分布天线 804建立遂传通道， 建立遂传通道的过程参见上面的描述， 区别表现在， 需要进行信道测试时， 由 网关设备 802发送信道测试请求报文给接入设备 800 ,授权接入设备 800启动信 道测试， 接入设备 800启动信道测试， 测试结束后， 接入设备 800发送信道测 试确认报文给网关设备 802,信道测试确认报文携带有接入设备 800和分布节点 之间的信道的可用频谱资源和信号隧传的频谱资源， 网关设备 802根据预先配 置的信息判断这些频谱资源是否满足要求， 如果满足， 则调整调制解调器的参 数， 向电力线上广播参数配置请求报文， 电力线上的从节点 （包括接入设备和 分布节点）收到参数配置请求报文后， 重新配置调制解调器参数。
本实施例提供的建立遂传通道的方法， 利用有线介质将无线信号变换后传 到远端的分布节点， 自动建立接入设备和分布节点之间的遂传通道， 由分布节 点将来自遂传通道的信号变换成原来的频率， 从而发射， 由于遂传通道是双向 的， 分布节点的无线信号也可以通过遂传通道传输给接入设备， 这样避免了无 线信道的各种衰减， 能提高无线信号的传输性能， 还能够在不修改无线空口协 议以及不增加发送功率的前提下， 提高 WiFi等无线信号的穿墙能力， 从而达到 消除无线盲区的目的。 本发明实施例二提供一种无线网络中的接入设备， 如图 9 所示， 包括： 调 制解调器 900和节点管理单元 902 , 由于是无线网络中的接入设备， 本领域普通 技术人员可以知悉，接入设备还可以包括宽带信号处理单元 906、无线信号处理 单元 904、 配置管理单元 910以及天线 908等， 其中， 天线 908通过调制解调器 900连接无线信号处理单元 904。
调制解调器 900, 用于通过有线介质接收来自分布节点的消息， 以及通过有 线介质向分布节点发送消息， 有线介质可以是电力线、 电话线、 同轴线或者塑 料光纤等， 以下将以电力线作为举例。 宽带处理单元 906, 用于处理宽带信号， 包括以太网报文和 IP报文的收发、 以太网 文和 IP ^艮文的处理以及地址转换等。
天线 908, 用于收发无线信号。
无线信号处理单元 904, 用于对天线 908收到的无线信号进行处理。
配置管理单元 910,用于对节点管理单元 902以及调制解调器 900的参数进 行配置。
调制解调器 900还用于对宽带信号和无线信号进行处理， 图 10为调制解调 器 900的结构示意图， 包括： 通信处理模块 10和信号遂传模块 14 , 其中，
信号遂传模块 14, 用于通过电力线和分布节点进行信号的交互以及处理， 具体可以包括： 对无线信号处理单元 904 的无线信号进行下变频处理， 将处理 后的无线信号通过电力线遂传给分布节点； 对来自电力线的无线信号进行上变 频处理， 将处理后的无线信号发送给无线信号处理单元 904; 以及对来自通信处 理模块 10的宽带信号进行透传等。
信号遂传模块 14的结构示意图如图 11所示， 其中，
选路器 14-1 ,用于连接变频器 14-2和 /或天线 908。 当没有分布节点通电时， 配置管理单元 910控制选路器 14-1连接天线而断开与变频器 14-2的连接，这样， 选路器 14-1直接将无线信号处理单元 904的无线信号透传给天线 908, 以及将 天线 908的无线信号透传给无线信号处理单元 904; 当有分布节点通电后， 配置 管理单元 910控制选路器 14-1连接变频器 14-2和天线 908, 此时， 选路器 14-1 除了直接将无线信号处理单元 904的无线信号透传给天线 908以及将天线 908 的无线信号透传给无线信号处理单元 904 外， 还可以将无线信号处理单元 904 的无线信号通过变频器 14-2发送到电力线上以及通过变频器 14-2将电力线上的 无线信号发送给无线信号处理单元 904。
变频器 14-2, 用于按照配置管理单元 910配置的参数将来自无线信号处理 单元 904的无线信号下变频后发送到电力线上， 以及按照配置管理单元 910配 置的参数将来自电力线的无线信号上变频后发送给无线信号处理单元 904。
通信处理模块 10连接宽带信号处理单元 906, 作为以太网等局域网的通信 接口， 用于承载宽带业务， 通过信号遂传模块 14与分布节点进行宽带信号的交 互。 调制解调器 900还可以包括信道估计模块 12,用于对电力线进行信道测试， 以获取电力线上的实际频谱资源， 关于信道测试的方式， 本领域普通技术人员 都应知悉。
节点管理单元 902,用于通过调制解调器 900向所述分布节点发送参数请求 报文， 通过调制解调器 900接收来自分布节点的参数响应报文， 根据参数响应 报文确定调制解调器 900 与分布节点通信所使用的频谱范围， 通过调制解调器 900向分布节点发送携带有频谱范围的参数配置请求报文。
节点管理单元 902还用于在收到参数响应报文后， 根据配置管理单元 910 设定的条件判断是否允许分布节点接入， 如果允许， 则配置调制解调器 900 中 的通信处理模块 10 以及信号遂传模块 14的参数， 假如电力线上实际可以频语 范围为 0~50MHz,则节点管理单元 902可以将通信处理模块 10的频谱范围配置 成 20~50MHz, 以传输宽带信号， 将选路器 14-1的工作模式设为双收双发， 将 变频器 14-2的上变频设置为 2.4GHz, 将变频器 14-2的下变频设置为 0~20MHz 等。
本实施例提供的接入设备， 能在传输宽带信号的同时， 通过有线介质遂传 无线信号， 通过有线介质将无线信号传输到拉远的分布节点， 从而提高无线信 号的穿墙能力， 消除无线盲区， 本实施例提供的接入设备还能自动分配频谱资 源， 从而建立和分布节点之间的遂传通道。 本发明实施例三相应提供一种分布节点， 所提供的接入设备可以通过有线 介质连接接入设备， 如图 12所示， 包括调制解调器 900、 配置管理单元 22、 天 线 908以及宽带信号处理单元 906。 其中， 调制解调器 900、 天线 908以及宽带 信号处理单元 906的功能上面已经描述。
配置管理单元 22, 用于在分布节点通电后， 获取分布节点的硬件的参数， 包括天线 908的类型、 调制解调器 900可工作的频率范围、 天线 908额定的发 射功率和接收功率等， 还用于在获取硬件的参数后， 检测到硬件不能进入工作 时启动告警程序。
配置管理单元 22还用于在通电后， 通过调制解调器 900检测有线介质上是 否有通信信号， 如果有则对调制解调器的参数进行设置， 包括： 设置选路器的 状态为断开和设置变频器的状态为关闭等， 设置完成后， 等待接入设备的发现 报文， 收到发现报文后， 通过调制解调器 900 向接入设备进行注册， 关于注册 的过程， 实施例一已经描述。
配置管理单元 22还用于接收接入设备的参数请求报文， 向接入设备发送参 数响应报文， 关于参数响应报文携带的参数， 上面已经描述。
配置管理单元 22还可以通过天线 908向接入点发送携带有通信性能参数的 消息。
配置管理单元 22还用于在收到接入设备的参数配置请求报文后， 对调制解 调器 900 的参数进行配置， 如根据参数配置请求报文中携带的频谱范围， 调整 调制解调器 900的通信处理模块的可用频谱范围、 配置调制解调器 900的选路 器的工作模式以及配置调制解调器 900的变频器的上变频和下变频的频率等。
本发明实施提供的分布节点能够通过有线介质传输无线信号， 能够自动配 置调制解调器的参数， 从而自动与接入设备建立遂传通道， 通过建立的遂传通 道将接入设备的无线信号拉远， 提高无线信号的穿墙能力， 还能提高无线信号 的无盖范围。 本发明实施例四提供一种无线网络的通信***， 如图 13所示， 包括接入设 备 30和分布节点 32, 接入设备 30和分布节点 32通过有线介质 31相连， 有线 介质 31可以是电力线、 电话线、 同轴线或者是塑料光纤等， 本实施例以电力线 作为举例。
其中，接入设备 30, 用于通过电力线 31向分布节点 32发送参数请求报文， 收到分布节点 32 的参数响应报文后， 根据参数响应报文确定通过有线介质 31 与分布节点 32 通信所使用的频谱资源。 根据获取的频谱资源配置接入设备 30 的参数， 向分布节点 32发送携带有频谱资源的参数配置请求报文。
所述接入设备 30还用于通过电力线 31向分布节点 32发送携带有时间片信 息的发现报文， 通过电力线 31接收分布节点 32在时间片内发送的注册请求报 文， 所述注册请求报文携带有分布节点 32的标识信息， 如果判断所述标识信息 满足预先设置的条件， 则为分布节点 32分配从节点标识号， 向分布节点 32发 送包含所述从节点标识号的注册响应报文， 建立所述标识信息与从节点标识号 的对应关系， 此后， 接入设备 30通过从节点标识号与分布节点 32通信。
分布节点 32, 用于根据所述参数请求配置报文中的频谱资源配置所述分布 节点的参数。
本实施例提供的通信***， 通过电力线将无线信号拉远到设置的分布节点， 通过分布节点的天线发射出去， 这个过程中， 无线信号可以进行无损耗的传输， 提高了无线信号的传输性能， 还能提高无线信号的穿墙能力， 达到消除无线盲 区的目的。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是 可以通过程序来指令相关的硬件完成， 所述的程序可以存储于一计算机可读存 储介质中， 如 ROM/RAM、 磁碟或光盘等。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局限于 此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易想到 的变化或替换， 都应涵盖在本发明的保护范围之内， 因此， 本发明的保护范围 应所述以权利要求的保护范围为准。

Claims

权利要求书
1、 一种建立传输无线信号的通道的方法， 其特征在于， 所述通道涉及连接 接入设备和分布节点的有线介质， 所述方法包括步骤：
所述接入设备获取分布节点的通信性能参数；
所述接入设备根据所述通信性能参数以及所述接入设备可工作的频谱范围 确定通过所述有线介质传输无线信号所使用的频率；
所述接入设备根据所述频率调整所述接入设备的参数， 向分布节点发送携 带有频率参数的消息， 以使得所述分布节点根据所述频率参数调整所述分布节 点的参数， 从而在所述有线介质中建立传输无线信号的通道。
2、 根据权利要求 1所述的方法， 其特征在于， 所述接入设备通过所述有线 介质获取分布节点的参数之前还包括：
所述接入设备通过所述有线介质向所述分布节点发送携带有时间片信息的 发现报文；
所述接入设备通过所述有线介质接收所述分布节点在所述时间片内发送的 注册请求报文， 所述注册请求报文携带有所述分布节点的标识信息；
所述接入设备判断所述标识信息是否满足预先设置的条件， 如果为是， 则 为所述分布节点分配从节点标识号， 向所述分布节点发送包含所述从节点标识 号的注册响应 4艮文；
所述接入设备建立所述标识信息与从节点标识号的对应关系。
3、 根据权利要求 2所述的方法， 其特征在于， 所述标识信息包括以所述分 布节点的媒体访问地址、 所述分布节点的类型和所述分布节点的序列号中的至 少一种。
4、 根据权利要求 1所述的方法， 其特征在于， 所述通行性能参数包括所述 分布节点的天线的类型、 所述分布节点的调制解调器的可工作模式以及所述分 布节点的调制解调器的频谱范围。
5、 根据权利要求 1所述的方法， 其特征在于， 所述接入设备根据所述通信 性能参数以及所述接入设备可工作的频谱范围确定通过所述有线介质传输无线 信号所使用的频率之前还包括： 所述接入设备向所述分布节点发送信道测试请求消息；
所述接入设备收到所述分布节点的信道测试响应消息后， 根据预设的参数 开始信道测试。
6、 根据权利要求 1所述的方法， 其特征在于， 所述接入设备根据所述频率 调整所述接入设备的参数具体包括：
所述接入设备根据所述频率调整所述接入设备的调制解调器的参数， 包括 调整所述调制解调器与所述分布节点进行宽带通信的频率以及调整所述调制解 调器与所述分布节点进行无线信号遂传的频率。
7、 根据权利要求 1-6任一项所述的方法， 其特征在于， 所述有线介质为电 力线、 电话线、 同轴线或塑料光纤。
8、 一种接入设备， 其特征在于， 包括：
调制解调器， 用于通过有线介质和分布节点进行信息交互及处理； 节点管理单元， 用于通过所述调制解调器获取所述分布节点的通信性能参 数， 根据所述通信性能参数以及所述调制解调器可工作的频谱范围确定在所述 调制解调器和所述分布节点之间传输无线信号所使用的频率， 根据所述频率调 整所述调制解调器的参数， 通过所述调制解调器向所述分布节点发送携带有频 率参数的消息。
9、 根据权利要求 8所述的接入设备， 其特征在于， 所述调制解调器包括通 信处理模块和信号遂传模块，
所述信号遂传模块， 用于通过所述有线介质和所述分布节点进行无线信号 的交互和处理；
所述通信处理模块， 用于通过所述有线介质和所述分布节点进行宽带信号 的交互和处理。
10、 一种无线通信***， 其特征在于， 包括接入设备和分布节点， 所述接 入设备和所述分布节点通过有线介质相连， 其中，
所述接入设备， 用于获取所述分布节点的通信性能参数， 根据所述参数以 及所述接入设备可工作的频谱范围确定通过所述有线介质传输无线信号所使用 的频率， 根据所述频率调整所述接入设备的参数， 向所述分布节点发送携带有 频率参数的消息； 所述分布节点， 用于根据所述频率调整所述分布节点的参数。
11、 根据权利要求 10所述的***， 其特征在于， 所述接入设备获取所述分 布节点的通信性能参数包括： 所述分布节点通过所述有线介质发送的携带有所述通信性能参数的参数响应报 文；
或
所述接入点通过天线接收来自所述分布节点的携带有所述通信性能参数的 消息。
PCT/CN2010/073120 2009-09-23 2010-05-24 一种建立传输无线信号的通道的方法、装置和*** WO2011035597A1 (zh)

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