WO2013086827A1 - Wifi网络桥接器、基于wifi的通信方法及系统 - Google Patents

Wifi网络桥接器、基于wifi的通信方法及系统 Download PDF

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Publication number
WO2013086827A1
WO2013086827A1 PCT/CN2012/074695 CN2012074695W WO2013086827A1 WO 2013086827 A1 WO2013086827 A1 WO 2013086827A1 CN 2012074695 W CN2012074695 W CN 2012074695W WO 2013086827 A1 WO2013086827 A1 WO 2013086827A1
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WIPO (PCT)
Prior art keywords
wifi
lte
information
data frame
format
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PCT/CN2012/074695
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English (en)
French (fr)
Inventor
王雪松
窦弟
王喜瑜
唐雄
郑学进
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP12857447.2A priority Critical patent/EP2793527B1/en
Priority to US14/365,042 priority patent/US9386609B2/en
Publication of WO2013086827A1 publication Critical patent/WO2013086827A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0853—Network architectures or network communication protocols for network security for authentication of entities using an additional device, e.g. smartcard, SIM or a different communication terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • 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
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/40—Security arrangements using identity modules
    • H04W12/43—Security arrangements using identity modules using shared identity modules, e.g. SIM sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • 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
    • H04W88/14—Backbone network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • WIFI network bridge WIFI-based communication method and system
  • the present invention relates to the field of communications, and in particular, to a WIFI network bridge and a WIFI-based communication method and system. Background technique
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • OFDM Orthogonal Frequency Division Multiplexing
  • MIMO Multiple Input Multiple Output
  • WIFI is a technology that can wirelessly connect terminals such as personal computers and handheld devices (such as PDAs and mobile phones).
  • terminals such as personal computers and handheld devices (such as PDAs and mobile phones).
  • IEEE 802.11a and IEEE 802.11g the IEEE 802.11 standard is now collectively referred to as WIFI. It provides users with wireless broadband Internet access. At the same time, it is also a fast and convenient way to get online at home, in the office or on the road.
  • a WIFI wireless network is a wireless network consisting of an access point (AP, Access Point) and a wireless network card.
  • the communication distance can reach 305 meters; in the closed area, the communication distance is 76 meters to 122 meters, which is convenient to integrate with the existing wired Ethernet network, the cost of networking is lower, and the WIFI technology transmission speed is very fast. , suitable for high-speed data transmission services; low transmission power, less radiation, so WIFI applications are also increasingly widespread.
  • the AP In a WIFI wireless network consisting of an AP and a wireless network card, the AP is generally called a network bridge. Any PC with a wireless network card can share the wired LAN or even the resources of the wide area network through the AP.
  • the working principle of the AP is equivalent to a HUB or routing of a built-in wireless transmitter, and the wireless network card is responsible for receiving the AP.
  • the CLIENT device that transmits the signal.
  • WIFI APs are generally wired in a wired manner, that is, connected to a wired LAN through a wired connection. Please refer to Figure 1.
  • the wired return route (Backhaul) must be opened first.
  • the main technical problem to be solved by the present invention is to provide a WIFI network bridge and a WIFI-based communication method and system, which can simplify the network topology of WIFI communication, reduce engineering cost and use cost, and improve user experience satisfaction. degree.
  • the present invention provides a WIFI-based communication method, including:
  • the WIFI network bridge acquires LTE communication link information
  • the WIFI terminal initiates a WIFI connection request to the WIFI network bridge, and establishes a WIFI communication link with the WIFI network bridge;
  • the WIFI network bridge sends the authentication request information to the LTE base station transceiver, and after receiving the authentication success response fed back by the LTE base station transceiver, establishing the LTE base station according to the acquired LTE communication link information.
  • the LTE communication link of the transceiver is not limited to the Wi-Fi connection.
  • the method further includes:
  • the WIFI network bridge After receiving the data frame of the WIFI format from the WIFI terminal, the WIFI network bridge converts the received data frame into a data frame of the LTE format and sends the data frame to the LTE base station transceiver; and/or,
  • the WIFI network bridge receives the number of LTE formats from the LTE base station transceiver After the frame is received, the received data frame is converted into a WIFI format data frame and sent to the WIFI terminal.
  • the WIFI network bridge converts the received data frame into a data frame in an LTE format, including:
  • the WIFI network bridge converts the received data frame into a data frame in a WIFI format, including: extracting packet header information, routing information, and data information of the data frame from the received data frame of the LTE format, and extracting each of the extracted data frames The information is recombined to form a data frame in WIFI format.
  • the authentication request information sent by the WIFI network bridge to the LTE base station transceiver includes: authentication information of the WIFI network bridge and/or a reference of the WIFI terminal
  • the method further includes: the LTE authentication device of the LTE network, according to the authentication request information, to the WIFI network bridge and / or the WIFI terminal performs authentication processing.
  • the authentication information of the WIFI network bridge and the WIFI terminal includes: USIM card information and/or certificate information.
  • the LTE communication link information includes frequency band information of an LTE network; and correspondingly, when establishing an LTE communication link with the LTE base station transceiver, the method further includes: The WIFI network bridge selects a corresponding frequency band to access the LTE network according to the frequency band information of the LTE network included in the LTE communication link information.
  • the present invention also provides a WIFI network bridge, including an information acquisition unit, an authentication unit, and a communication link establishing unit;
  • the information acquiring unit is configured to acquire LTE communication link information
  • the authentication unit is configured to send authentication request information to an LTE base station transceiver, receive an authentication response fed back by the LTE base station transceiver, and send the authentication response to the communication link Establish a unit;
  • the communication link establishing unit is configured to receive a WIFI connection request sent by the WIFI terminal, establish a WIFI communication link with the WIFI terminal, and after receiving the authentication success response sent by the authentication unit, according to the
  • the LTE communication link information acquired by the information acquisition unit establishes an LTE communication link with the LTE base station transceiver.
  • the WIFI network bridge further includes a data format conversion unit, configured to convert the received data frame into an LTE format after receiving the data frame from the WIFI format of the WIFI terminal. Sending the data frame to the LTE base station transceiver; and/or receiving the data frame of the LTE format from the LTE base station transceiver, converting the received data frame into a WIFI format data frame and transmitting the data frame to the WIFI terminal .
  • the data format conversion unit is specifically configured to: extract packet header information, routing information, and data information of the data frame from the received data frame of the WIFI format, and extract each The information is combined with the radio frequency connection control information required by the data frame of the LTE format to form a data frame in the LTE format; and/or, the header information, the routing information, and the data information of the data frame are extracted from the received data frame of the LTE format. , re-combining the extracted information to form a data frame in a WIFI format.
  • the present invention also provides a WIFI-based communication system comprising at least one WIFI terminal, at least one LTE base station transceiver, and at least one WIFI network bridge as described above;
  • the WIFI terminal is configured to send a request for establishing a WIFI connection to the WIFI network bridge;
  • the WIFI network bridge is configured to acquire LTE communication link information, receive a setup WIFI connection request sent by the WIFI terminal, establish a WIFI communication link with the WIFI terminal, and send an authentication request to the LTE base station transceiver. Information, and after receiving the authentication success response fed back by the LTE base station transceiver, establishing, according to the acquired LTE communication link information, the LTE LTE communication link of the base transceiver station;
  • the LTE base station transceiver is configured to receive authentication request information sent by the WIFI network bridge, and feed back an authentication response to the WIFI network bridge.
  • the invention has the beneficial effects that the WIFI network bridge in the present invention, that is, the WIFI AP, can first acquire the LTE communication link information, and after receiving the WIFI connection request sent by the WIFI terminal, establish a WIFI communication link with the WIFI terminal. And sending the authentication request information to the LTE base station transceiver, and then determining whether the authentication is successful. If the authentication is successful, establishing an LTE communication link with the LTE base station transceiver according to the acquired LTE communication link information.
  • the present invention realizes the Backhaul of the WIFI AP network by using the LTE wireless network, and avoids opening the wired Backhaul every time a WIFI AP network is opened, thereby simplifying the network topology of the WIFI communication, and reducing the engineering cost and the use cost;
  • the establishment of wireless Backhaul is more flexible and less constrained by the environment, which is more conducive to the establishment of WIFI AP network and improve the satisfaction of user experience.
  • Figure 1 is a block diagram of a conventional wired Backhaul WIFI network bridge
  • FIG. 2 is a structural block diagram of a WIFI network bridge according to an embodiment of the present invention.
  • FIG. 3 is a structural block diagram of a WIFI network bridge according to an embodiment of the present invention.
  • FIG. 4 is a structural block diagram of a WIFI network bridge according to an embodiment of the present invention.
  • FIG. 5 is a system block diagram of a WIFI-based communication system according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a WIFI-based communication method according to an embodiment of the present invention. detailed description
  • the WIFI network bridge (ie, WIFI AP) in this example includes: an information obtaining unit, an authentication unit, and a communication link establishing unit;
  • An information acquiring unit configured to acquire LTE communication link information; Specifically, the information acquiring unit may detect whether the scenario of the application has a reliable LTE access signal, that is, whether it is within the effective coverage of the corresponding LTE base transceiver station (BTS), and if so, obtain the corresponding LTE communication link.
  • the obtained LTE link information may include the frequency band information of the LTE network, and when the LTE communication link is established, the optimal communication channel may be automatically selected according to the frequency band information of the LTE network;
  • An authentication unit configured to send the authentication request information to the LTE BTS, and receive the authentication response of the LTE BTS feedback; and configured to send the received authentication response to the communication link establishing unit;
  • the authentication response may include a response of successful authentication and a response of authentication failure.
  • the communication link establishing unit is configured to receive a request for establishing a WIFI connection sent by the WIFI terminal, and establish a WIFI communication link with the WIFI terminal that sends the request. And after receiving the authentication success response sent by the authentication unit, establishing an LTE communication link with the LTE BTS according to the LTE communication link information acquired by the information acquiring unit;
  • the frequency band information of the LTE network included in the LTE communication link information may be selected, and the corresponding frequency band is selected to access the LTE network, for example, according to the acquired frequency band information of the LTE network. Select the best frequency band to access the LTE network to achieve the best Backhaul channel.
  • the WIFI terminal in this example refers to a device with WIFI function, such as a mobile phone with a WIFI function, a notebook, a tablet, and the like.
  • the WIFI AP in this example further includes a data format conversion unit, and the data format conversion unit is configured to convert the data frame into a data frame of the LTE format and send the data frame to the LTE after receiving the data frame of the WIFI format from the WIFI terminal.
  • the BTS is configured to be able to access the Internet (Internet) through the LTE network; and is further configured to convert the data frame into a WIFI format data frame after receiving the data frame in the LTE format from the LTE BTS, so as to be received from the Internet.
  • the data is sent to the WIFI terminal through WIFI.
  • the specific process of the data format conversion unit implementing the data format conversion is as follows: After receiving the data frame of the WIFI format from the WIFI terminal, the data format conversion unit receives the data frame Extracting the header information, routing information, and data information of the data frame in the received data frame of the WIFI format, and then adding the radio frequency connection control information required by the data frame in the LTE format, and extracting the information from the data frame in the WIFI format The radio link control information required for the data frame of the LTE format is recombined to form a data frame in the LTE format so as to be able to access the Internet through the LTE network.
  • the data subframes of each WIFI format may be separately separated from the received WIFI format data, and then the header information of each subframe is extracted from each subframe, The routing information and the data information are recombined into data subframes of the LTE format in the above manner, and the obtained data subframes of the LTE formats are combined to form a complete data frame of the LTE format.
  • the data format conversion unit After receiving the data frame of the LTE format from the LTE BTS, the data format conversion unit removes the radio frequency connection control information in the data frame, extracts the header information, the routing information, and the data information of the data frame, and reassembles the data frame.
  • a data frame in a WIFI format is formed and then transmitted to the terminal through the WIFI.
  • the received data in the LTE format includes multiple subframes
  • the data subframes of each LTE format may be separately extracted from the received data in the LTE format, and the radio frequency connection control information in each subframe is removed, respectively.
  • the header information, the routing information, and the data information of each subframe are extracted in the subframe, and are recombined into the data frame in the WIFI format in the above manner.
  • the authentication request information sent by the authentication unit of the WIFI AP to the LTE BTS may include the authentication information of the WIFI AP and/or the authentication information of the WIFI terminal; the LTE authentication device of the LTE network according to the received authentication
  • the right request information performs authentication processing on the WIFI network bridge and/or the WIFI terminal.
  • the specific authentication information included in the authentication request information in this example can be selected according to the management policy of the WIFI AP by LTE. The following situations are further described:
  • the WIFI AP can access the Internet network without restriction.
  • the WIFI AP has a valid authorized USIM card and/or certificate.
  • the authentication unit of the WIFI AP The authentication request information sent to the LTE BTS may include only the authentication information of the WIFI AP itself, that is, the USIM card information and/or certificate information of the WIFI AP, LTE.
  • the LTE authentication device of the network can only perform authentication processing on the USIM card information and/or certificate information of the WIFIAP at this time;
  • the authentication request information sent by the BTS includes the authentication information of the WIFI AP and the authentication information of the WIFI terminal, that is, the USIM card information and/or certificate information including the WIFI AP and the USIM card information and/or certificate information of the WIFI terminal;
  • the LTE authentication device of the LTE network needs to authenticate the USIM card information and/or certificate information of the WIFI AP at this time, and also authenticate the USIM card information and/or certificate information of the WIFI terminal, only in the second When the authentication is passed at the same time, the WIFI terminal can access the Internet through the LTE base station;
  • the WIFI AP with the LTE access function can access the LTE network at will, and only authenticate the WIFI terminal under the WIFI AP.
  • the authentication unit of the WIFI AP sends the LTE BTS to the LTE BTS.
  • the authentication request information may include only the USIM card information and/or the certificate information of the WIFI terminal.
  • the LTE authentication device of the LTE network may only perform authentication processing on the USIM card information and/or the certificate information of the WIFI terminal.
  • the WIFI terminal authentication can access the Internet through the LTE base station.
  • the specific management policy of the device on the LTE network to the WIFI AP can be set according to the actual situation. It is worth noting that if the WIFI AP itself does not require an authorization type, it needs to use the valid authorized USIM card and/or certificate of the WIFI terminal for authentication.
  • the WIFI terminal device needs to use the WIFI function, directly access the LTE network through the WIFI AP.
  • the LTE authentication device initiates a USIM card or certificate authentication request; if the authentication is successful, the WIFI AP establishes a WIFI communication link on the WIFI terminal side, and establishes an LTE communication link on the LTE BTS side, that is, according to the previously acquired LTE communication chain.
  • the road information establishes the best wireless Backhaul channel.
  • the WIFI AP in this example also includes a WIFI radio frequency and baseband processing unit. Provide coverage of WIFI APs and handle normal WIFI processes.
  • the WIFI AP in this example also has an Ethernet electrical port. Therefore, when LTE is not used for wireless Backhaul, the WIFI AP in this example can still determine whether authentication needs to be performed in the LTE network, so as to ensure whether Management is performed using an LTE authentication device.
  • the example further provides a WIFI communication-based system, including at least one of the foregoing WIFI terminals, at least one LTE BTS as described above, and at least one WIFI AP as described above.
  • the WIFI AP accesses the Internet through the LTE BTS, that is, the Backhaul established by the WIFI AP is the wireless Backhaul. Therefore, in the system shown in Figure 1, every WIFI AP network needs to be opened. Wired Backhaul, therefore, can simplify the network topology of WIFI communication, reduce engineering costs and use costs; and the establishment of wireless Backhaul is more flexible, less restricted by the environment, more conducive to the establishment of WIFI AP network, improve user experience satisfaction .
  • This example also provides a WIFI-based communication method.
  • the method includes the following steps: The WIFI AP obtains the LTE communication link information according to the foregoing manner;
  • the LTE communication link information includes frequency band information of an LTE network
  • the WIFI terminal initiates a WIFI connection request to the WIFI AP, and establishes a WIFI communication link with the WIFI AP;
  • the WIFI AP sends the authentication request information to the LTE BTS, and the LTE authentication device of the LTE network performs authentication processing on the WIFI AP and/or the WIFI terminal according to the authentication request information, and the authentication result is passed through the LTE BTS feedback.
  • the WIFI AP After receiving the authentication response of the LTE BTS feedback, the WIFI AP establishes an LTE communication link with the LTE BTS according to the LTE communication link information acquired by the WIFI AP.
  • the sent authentication request information includes the authentication information of the WIFI AP and/or the authentication information of the WIFI terminal.
  • the method further includes: After receiving the data frame of the WIFI format from the WIFI terminal, the WIFI AP converts the received data frame into an LTE format data frame and sends the data frame to the LTE BTS, so as to be able to access the Internet through the LTE network. Similarly, after receiving the data frame of the LTE format from the LTE BTS, the WIFI AP converts the received data frame into a WIFI format data frame and sends the data frame to the WIFI terminal to receive from the Internet. The received data is sent to the WIFI terminal through WIFI.
  • the present invention realizes the Backhaul of the WIFI AP by using the advantage of the high-bandwidth capacity of the LTE network by the WIFI AP, so as to transmit the corresponding data, and avoid opening a wired backhaul for each WIFI AP network in the prior art. Therefore, the network topology of the WIFI communication can be simplified, and the engineering cost and the use cost can be reduced; and it can be seen that the establishment of the wireless Backhaul is more flexible, and the environmental constraints are small, which is more conducive to the establishment of the WIFI AP network and improves the satisfaction of the user experience. . It is to be understood that the specific embodiments of the invention are limited only by the description. It is to be understood by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the invention.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

本发明公开了一种WIFI网络桥接器、基于WIFI的通信方法及系统，WIFI网络桥接器可先获取LTE通信链路信息，当收到WIFI终端发送的建立WIFI连接请求后，建立与该WIFI终端的WIFI通信链路，并向LTE基站收发器发送鉴权请求信息，然后判断鉴权是否成功，若鉴权成功，则根据获取的LTE通信链路信息建立与LTE基站收发器建立LTE通信链路。即本发明通过利用LTE无线网络实现了WIFI AP网络的回线路程（backhaul），避免每开通一个WIFI AP网络，均需要先开通有线backhaul，因此可简化WIFI通信的网络拓扑结构，降低工程成本和使用成本，提高用户体验的满意度。

Description

WIFI网络桥接器、 基于 WIFI的通信方法及系统 技术领域
本发明涉及通信领域，具体涉及一种 WIFI网络桥接器和一种基于 WIFI 的通信方法及系统。 背景技术
长期演进（ LTE, Long Term Evolution )是继第三代移动通信之后国际 上主流的新一代移动通信标准， 是在第三代合作伙伴计划 （3GPP , 3rd Generation Partnership Project )组织中作为第三代移动通信的长期演进技术 进行可行性研究和标准化的， LTE及其增强版本 LTE-Advanced的研究和标 准化受到了全球运营商和设备商最为广泛的支持和参与。 LTE 系统以正交 频分复用 （ OFDM, Orthogonal Frequency Division Multiplexing )和多输入 多输出 （ MIMO, Multiple Input Multiple Output )技术为基础， 并在移动通 信系统中全面采用和优化分组数据传输。
WIFI是一种可以将个人电脑、 手持设备（如 PDA、 手机）等终端以 无线方式互相连接的技术。 随着技术的发展， 以及 IEEE 802.11a及 IEEE 802.11g等标准的出现， 现在 IEEE 802.11 这个标准已被统称作 WIFI。 它 为用户提供了无线的宽带互联网访问。 同时， 它也是在家里、 办公室或旅 途中上网快速、便捷的途径。 WIFI 无线网络是由接入点（ AP, Access Point ) 和无线网卡组成的无线网络。 在开放性区域， 通讯距离可达 305 米； 在封 闭性区域， 通讯距离为 76 米到 122 米， 方便与现有的有线以太网络整合， 组网的成本更低，且 WIFI技术传输速度非常快，适合高速数据传输的业务； 发射功率低， 辐射更小， 因此 WIFI应用也日益广泛。
在由 AP和无线网卡组成的 WIFI无线网络中， AP—般称为网络桥接 任何一台装有无线网卡的 PC均可通过 AP去分享有线局域网络， 甚至广域 网络的资源， AP的工作原理相当于一个内置无线发射器的 HUB或路由， 而 无线网卡则是负责接收由 AP所发射信号的 CLIENT (用户）端设备。
目前的 WIFI AP普遍采用有线方式布网， 即： 通过有线的方式与有线 局域网连通， 请参见图 1 , 每开通一个 WIFI AP网络， 均需要先开通有线回 线路程（ Backhaul ), 网络拓朴结构复杂， 工程实现成本高， 间接地提高了 用户的使用成本， 降低了用户体验的满意度。 发明内容
本发明要解决的主要技术问题是，提供一种 WIFI网络桥接器和一种基 于 WIFI的通信方法及系统， 可简化 WIFI通信的网络拓朴结构， 降低工程 成本和使用成本， 提高用户体验的满意度。
为解决上述技术问题，本发明提供了一种基于 WIFI的通信方法，包括：
WIFI网络桥接器获取 LTE通信链路信息；
WIFI终端向所述 WIFI网络桥接器发起建立 WIFI连接请求， 与所述 WIFI网络桥接器建立 WIFI通信链路；
所述 WIFI网络桥接器向 LTE基站收发器发送鉴权请求信息， 在收到 所述 LTE基站收发器反馈的鉴权成功响应后， 根据获取的所述 LTE通信链 路信息建立与所述 LTE基站收发器的 LTE通信链路。
在本发明的一种实施例中， 所述 WIFI网络桥接器与所述 LTE基站收 发器建立 LTE通信链路后， 该方法还包括：
所述 WIFI网络桥接器收到来自所述 WIFI终端的 WIFI格式的数据帧 后，将收到的数据帧转换成 LTE格式的数据帧发送给所述 LTE基站收发器； 和 /或，
所述 WIFI网络桥接器收到来自所述 LTE基站收发器的 LTE格式的数 据帧后，将收到的数据帧转换成 WIFI格式的数据帧发送给所述 WIFI终端。 在本发明的一种实施例中，所述 WIFI网络桥接器将收到的数据帧转换 成 LTE格式的数据帧包括：
从收到的所述 WIFI格式的数据帧中提取数据帧的包头信息、路由信息 以及数据信息， 将提取的各信息与 LTE格式的数据帧需要的射频连接控制 信息组合， 形成 LTE格式的数据帧；
所述 WIFI网络桥接器将收到的数据帧转换成 WIFI格式的数据帧包括： 从收到的所述 LTE格式的数据帧中提取数据帧的包头信息、 路由信息 以及数据信息， 将提取的各信息重新组合， 形成 WIFI格式的数据帧。
在本发明的一种实施例中， 所述 WIFI网络桥接器向所述 LTE基站收 发器发送的鉴权请求信息包括： 所述 WIFI 网络桥接器的鉴权信息和 /或所 述 WIFI终端的鉴权信息； 相应的， 在收到所述 LTE基站收发器反馈的鉴 权成功响应之前， 该方法还包括： LTE网络的 LTE鉴权设备根据所述鉴权 请求信息对所述 WIFI网络桥接器和 /或所述 WIFI终端进行鉴权处理。
在本发明的一种实施例中， 所述 WIFI网络桥接器和所述 WIFI终端的 鉴权信息包括： USIM卡信息和 /或证书信息。
在本发明的一种实施例中， 所述 LTE通信链路信息包括 LTE网络的频 段信息； 相应的， 在建立与所述 LTE基站收发器的 LTE通信链路时， 该方 法进一步包括： 所述 WIFI网络桥接器根据所述 LTE通信链路信息包括的 LTE网络的频段信息选择相应的频段接入 LTE网络。
本发明还提供了一种 WIFI网络桥接器，包括信息获取单元、鉴权单元、 和通信链路建立单元； 其中，
所述信息获取单元， 用于获取 LTE通信链路信息；
所述鉴权单元， 用于向 LTE基站收发器发送鉴权请求信息， 接收所述 LTE基站收发器反馈的鉴权响应， 并将所述鉴权响应发送给所述通信链路 建立单元；
所述通信链路建立单元， 用于接收 WIFI终端发送的建立 WIFI连接请 求， 与所述 WIFI终端建立 WIFI通信链路； 并在接收到所述鉴权单元发送 的鉴权成功响应后， 根据所述信息获取单元获取的所述 LTE通信链路信息 建立与所述 LTE基站收发器的 LTE通信链路。
在本发明的一种实施例中，该 WIFI网络桥接器还包括数据格式转换单 元， 用于收到来自所述 WIFI终端的 WIFI格式的数据帧后， 将收到的数据 帧转换成 LTE格式的数据帧发送给所述 LTE基站收发器；和 /或收到来自所 述 LTE基站收发器的 LTE格式的数据帧后， 将收到的数据帧转换成 WIFI 格式的数据帧发送给所述 WIFI终端。
在本发明的一种实施例中， 所述数据格式转换单元， 具体用于： 从收 到的所述 WIFI格式的数据帧中提取数据帧的包头信息、路由信息以及数据 信息，将提取的各信息与 LTE格式的数据帧需要的射频连接控制信息组合， 形成 LTE格式的数据帧； 和 /或， 从收到的所述 LTE格式的数据帧中提取数 据帧的包头信息、 路由信息以及数据信息， 将提取的各信息重新组合， 形 成 WIFI格式的数据帧。
本发明还提供了一种基于 WIFI的通信系统，包括至少一个 WIFI终端、 至少一个 LTE基站收发器以及至少一个如上所述的 WIFI网络桥接器； 其 中，
所述 WIFI终端， 用于向所述 WIFI网络桥接器发送建立 WIFI连接请 求；
所述 WIFI网络桥接器， 用于获取 LTE通信链路信息， 接收所述 WIFI 终端发送的建立 WIFI连接请求， 与所述 WIFI终端建立 WIFI通信链路； 向所述 LTE基站收发器发送鉴权请求信息， 并在收到所述 LTE基站收发器 反馈的鉴权成功响应后，根据获取的所述 LTE通信链路信息建立与所述 LTE 基站收发器的 LTE通信链路；
所述 LTE基站收发器， 用于接收所述 WIFI网络桥接器发送的鉴权请 求信息， 并向所述 WIFI网络桥接器反馈鉴权响应。
本发明的有益效果是：本发明中的 WIFI网络桥接器即 WIFI AP可先获 取 LTE通信链路信息， 当收到 WIFI终端发送的建立 WIFI连接请求后， 建 立与该 WIFI终端的 WIFI通信链路， 并向 LTE基站收发器发送鉴权请求信 息， 然后判断鉴权是否成功， 若鉴权成功， 则根据获取的 LTE通信链路信 息建立与 LTE基站收发器建立 LTE通信链路。即本发明通过利用 LTE无线 网络实现了 WIFI AP网络的 Backhaul, 避免每开通一个 WIFI AP网络， 均 需要先开通有线 Backhaul, 因此可简化 WIFI通信的网络拓朴结构， 降低工 程成本和使用成本； 且无线 Backhaul的建立更灵活， 受环境的制约度小， 更利于 WIFI AP网络的建立， 提高用户体验的满意度。 附图说明
图 1为传统有线 Backhaul的 WIFI网络桥接器结构框图；
图 2为本发明一种实施例的 WIFI网络桥接器结构框图；
图 3为本发明一种实施例的 WIFI网络桥接器结构框图；
图 4为本发明一种实施例的 WIFI网络桥接器结构框图；
图 5为本发明一种实施例的基于 WIFI的通信系统的系统框图； 图 6为本发明一种实施例的基于 WIFI的通信方法的流程图。 具体实施方式
下面通过具体实施方式结合附图对本发明作进一步详细说明。
请参考图 2, 本例中的 WIFI网络桥接器（即 WIFI AP ) 包括： 信息获 取单元、 鉴权单元、 和通信链路建立单元； 其中，
信息获取单元， 用于获取 LTE通信链路信息； 具体地， 信息获取单元可检测其应用的场景是否具备有可靠的 LTE接 入信号， 即是否处于相应的 LTE基站收发器（BTS ) 的有效覆盖范围内， 若是， 则获取相应的 LTE通信链路信息， 获取的 LTE链路信息可包括 LTE 网络的频段信息， 在建立 LTE通信链路时， 可根据 LTE网络的频段信息自 动选择最佳的通信信道；
鉴权单元， 用于向 LTE BTS发送鉴权请求信息， 并接收 LTE BTS反馈 的鉴权响应； 还用于将接收到的鉴权响应发送给通信链路建立单元；
其中， 所述鉴权响应可包括鉴权成功的响应和鉴权失败的响应， 通信链路建立单元， 用于接收 WIFI终端发送的建立 WIFI连接请求， 与发送请求的 WIFI终端建立 WIFI通信链路； 还用于收到鉴权单元发送的 鉴权成功响应后， 根据信息获取单元获取的 LTE通信链路信息建立与 LTE BTS的 LTE通信链路；
这里，在建立与 LTE BTS的 LTE通信链路时，具体可通过 LTE通信链 路信息包括的 LTE网络的频段信息， 选择相应的频段接入 LTE网络， 例如 根据获取到的 LTE网络的频段信息自动选择最好的频段接入 LTE网络， 以 实现最佳的 Backhaul信道。
值得注意的是， 本例中的 WIFI终端是指具有 WIFI功能的设备， 例如 具备 WIFI功能的手机、 笔记本、 平板电脑等。
请参见图 3 ,本例中的 WIFI AP还包括数据格式转换单元，数据格式转 换单元用于收到来自 WIFI终端的 WIFI格式的数据帧后， 将数据帧转换成 LTE格式的数据帧发送给 LTE BTS, 以便能够通过 LTE网络接入到因特网 ( Internet )中； 还用于收到来自 LTE BTS的 LTE格式的数据帧后， 将数据 帧转换成 WIFI格式的数据帧， 以便将从 Internet中接收的数据通过 WIFI 发送给 WIFI终端。 数据格式转换单元实现数据格式转换的具体过程如下： 数据格式转换单元收到来自 WIFI终端的 WIFI格式的数据帧后，从接 收到的 WIFI格式的数据帧中提取该数据帧的包头信息、路由信息以及数据 信息， 然后加上 LTE格式的数据帧所需要射频连接控制信息， 将从 WIFI 格式的数据帧中提取的各信息与 LTE格式的数据帧需要的射频连接控制信 息重新组合，形成 LTE格式的数据帧 ,以便能够通过 LTE网络接入到 Internet 中。 当接收的 WIFI格式的数据包括多个子帧时， 可先从收到的 WIFI格式 的数据中分拆出各 WIFI格式的数据子帧，然后分别从各子帧中提取各子帧 的包头信息、 路由信息以及数据信息， 按上述方式重新组合成 LTE格式的 数据子帧， 将得到的各 LTE格式的数据子帧组合在一起， 形成一个完整的 LTE格式的数据帧。
对应的， 数据格式转换单元接收到来自 LTE BTS的 LTE格式的数据帧 后， 去除该数据帧中的射频连接控制信息， 从中提取该数据帧的包头信息、 路由信息以及数据信息进行重新组合， 以形成 WIFI格式的数据帧， 然后通 过 WIFI发送给终端。 当接收的 LTE格式的数据包括多个子帧时， 可先从 接收到的 LTE格式的数据中分拆出各个 LTE格式的数据子帧， 将各子帧中 的射频连接控制信息去除， 分别从各子帧中提取各子帧的包头信息、 路由 信息以及数据信息， 按上述方式重新组合成 WIFI格式的数据帧。
本例中 WIFI AP的鉴权单元向 LTE BTS发送的鉴权请求信息可包括 WIFI AP自身的鉴权信息和 /或 WIFI终端的鉴权信息； LTE网络的 LTE鉴 权设备则根据收到的鉴权请求信息对 WIFI网络桥接器和 /或 WIFI终端进行 鉴权处理。本例中的鉴权请求信息包括的具体鉴权信息可根据 LTE对 WIFI AP的管理策略进行选择， 下面列举以下几种情况做进一步说明：
1、 对 WIFI AP授权 , 同时 WIFI AP下面的 WIFI终端均可以无限制地 接入 Internet网络； 一般情况下， WIFI AP具备有效授权的 USIM卡和 /或证 书 , 此时， WIFI AP的鉴权单元向 LTE BTS发送的鉴权请求信息可只包括 WIFI AP自身的鉴权信息，即 WIFI AP的 USIM卡信息和 /或证书信息， LTE 网络的 LTE鉴权设备此时可只对 WIFIAP的 USIM卡信息和 /或证书信息进 行鉴权处理；
2、 对 WIFI AP授权， 但同时也对 WIFI AP下面的 WIFI终端进行认证 鉴权， 只有符合安全规定的 WIFI终端才可以通过 LTE基站接入到 Internet 网络，此时 WIFI AP的鉴权单元向 LTE BTS发送的鉴权请求信息包括 WIFI AP自身的鉴权信息和 WIFI终端的鉴权信息， 即： 包括 WIFI AP的 USIM 卡信息和 /或证书信息及 WIFI终端的 USIM卡信息和 /或证书信息； LTE网 络的 LTE鉴权设备此时既要对 WIFI AP的 USIM卡信息和 /或证书信息进行 鉴权处理， 也要对 WIFI终端的 USIM卡信息和 /或证书信息进行鉴权处理， 只有在二者同时鉴权通过时， WIFI 终端才可以通过 LTE 基站接入到 Internet;
3、 对 WIFI AP放开权限， 具备 LTE接入功能的 WIFI AP可以随意接 入 LTE网络， 只对 WIFI AP下的 WIFI终端进行鉴权管理， 此时 WIFI AP 的鉴权单元向 LTE BTS发送的鉴权请求信息可只包括 WIFI终端的 USIM 卡信息和 /或证书信息； LTE网络的 LTE鉴权设备此时可只对对 WIFI终端 的 USIM卡信息和 /或证书信息进行鉴权处理， 只有在 WIFI 终端鉴权通过 时 , WIFI终端才可以通过 LTE基站接入到 Internet
本例中 LTE网络的设备对 WIFI AP具体的管理策略可根据实际情况具 体选择设置。 值得注意的是， 如果 WIFI AP本身就属于无需授权类型， 则 需要使用 WIFI终端自身的有效授权 USIM卡和 /或证书进行鉴权， WIFI 终 端设备需要使用 WIFI功能时， 通过 WIFI AP直接向 LTE网络的 LTE鉴权 设备发起 USIM卡或证书鉴权请求；如果鉴权成功，则 WIFI AP在 WIFI终 端侧建立 WIFI通信链路， 在 LTE BTS侧建立 LTE通信链路， 即根据之前 获取的 LTE通信链路信息建立最佳的无线 Backhaul信道。
请参见图 4, 本例中的 WIFI AP还包括 WIFI射频与基带处理单元， 用 于提供 WIFI AP的覆盖， 以及用于处理正常的 WIFI流程。
值得注意的是， 本例中的 WIFI AP还设有 Ethernet电口， 因此当不使 用 LTE做无线 Backhaul时候，本例中的 WIFI AP仍然可以判断是否需要在 LTE网络中进行鉴权， 以便保证是否利用 LTE鉴权设备进行管理。
请参见图 5, 本例还提供了基于 WIFI通信的系统， 包括至少一个上述 WIFI终端、 至少一个如上所述的 LTE BTS以及至少一个如上所述的 WIFI AP。 从图 4中可以看出， WIFI AP通过 LTE BTS接入 Internet, 即 WIFI AP 建立的 Backhaul是无线 Backhaul, 因此不需要像图 1所示的系统中， 每开 通一个 WIFI AP网络， 均需要先开通有线 Backhaul, 因此可简化 WIFI通信 的网络拓朴结构， 降低工程成本和使用成本； 且无线 Backhaul的建立更灵 活， 受环境的制约度小， 更利于 WIFI AP网络的建立， 提高用户体验的满 意度。
本例还提供了一种基于 WIFI的通信方法，请参见图 6, 包括以下步驟： WIFI AP按上述方式获取 LTE通信链路信息；
这里， 所述 LTE通信链路信息包括 LTE网络的频段信息；
WIFI终端向 WIFI AP发起建立 WIFI连接请求， 建立与所述 WIFI AP 之间的 WIFI通信链路；
WIFI AP向 LTE BTS发送鉴权请求信息， LTE网络的 LTE鉴权设备根 据所述鉴权请求信息对所述 WIFI AP和 /或所述 WIFI终端进行鉴权处理， 将鉴权结果通过 LTE BTS反馈给 WIFI AP; WIFI AP收到 LTE BTS反馈的 鉴权成功响应后， 根据 WIFI AP获取的 LTE通信链路信息建立与 LTE BTS 的 LTE通信链路。
这里， 发送的鉴权请求信息包括 WIFI AP的鉴权信息和 /或 WIFI终端 的鉴权信息。
其中， 在 WIFI AP与 LTE BTS建立 LTE通信链路后， 该方法还包括： WIFI AP收到来自所述 WIFI终端的 WIFI格式的数据帧后， 按上述方 法将收到的数据帧转换成 LTE格式的数据帧发送给 LTE BTS, 以便能够通 过 LTE网络接入到 Internet中， 实现通信； 同样， WIFI AP收到来自所述 LTE BTS的 LTE格式的数据帧后，按上述方法将收到的数据帧转换成 WIFI 格式的数据帧发送给所述 WIFI终端， 以将从 Internet中接收到的数据通过 WIFI发送给 WIFI终端。
综上可知， 本发明通过 WIFI AP利用 LTE网络高宽带容量的优势实现 了 WIFI AP的 Backhaul, 以进行相应数据的传输， 避免现有技术中每开通 一个 WIFI AP网络， 均需要先开通有线 Backhaul, 因此可简化 WIFI通信的 网络拓朴结构， 降低工程成本和使用成本； 且由上可知无线 Backhaul的建 立更灵活， 受环境的制约度小， 更利于 WIFI AP网络的建立， 提高用户体 验的满意度。 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的 普通技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干简单 推演或替换， 都应当视为属于本发明的保护范围。

Claims

权利要求书
1、 一种基于 WIFI的通信方法， 其特征在于， 该方法包括：
WIFI网络桥接器获取 LTE通信链路信息；
WIFI终端向所述 WIFI网络桥接器发起建立 WIFI连接请求， 与所述 WIFI网络桥接器建立 WIFI通信链路；
所述 WIFI网络桥接器向 LTE基站收发器发送鉴权请求信息， 在收到 所述 LTE基站收发器反馈的鉴权成功响应后， 根据获取的所述 LTE通信链 路信息建立与所述 LTE基站收发器的 LTE通信链路。
2、 根据权利要求 1所述的方法， 其特征在于， 所述 WIFI网络桥接器 与所述 LTE基站收发器建立 LTE通信链路后， 该方法还包括：
所述 WIFI网络桥接器收到来自所述 WIFI终端的 WIFI格式的数据帧 后，将收到的数据帧转换成 LTE格式的数据帧发送给所述 LTE基站收发器； 和 /或，
所述 WIFI网络桥接器收到来自所述 LTE基站收发器的 LTE格式的数 据帧后，将收到的数据帧转换成 WIFI格式的数据帧发送给所述 WIFI终端。
3、 根据权利要求 2所述的方法， 其特征在于， 所述 WIFI网络桥接器 将收到的数据帧转换成 LTE格式的数据帧包括：
从收到的所述 WIFI格式的数据帧中提取数据帧的包头信息、路由信息 以及数据信息， 将提取的各信息与 LTE格式的数据帧需要的射频连接控制 信息组合， 形成 LTE格式的数据帧；
所述 WIFI网络桥接器将收到的数据帧转换成 WIFI格式的数据帧包括： 从收到的所述 LTE格式的数据帧中提取数据帧的包头信息、 路由信息 以及数据信息， 将提取的各信息重新组合， 形成 WIFI格式的数据帧。
4、 根据权利要求 1-3任一项所述的方法， 其特征在于， 所述 WIFI网 络桥接器向所述 LTE基站收发器发送的鉴权请求信息包括： 所述 WIFI网 络桥接器的鉴权信息和 /或所述 WIFI终端的鉴权信息；
相应的， 在收到所述 LTE基站收发器反馈的鉴权成功响应之前， 该方 法还包括： LTE 网络的 LTE鉴权设备根据所述鉴权请求信息对所述 WIFI 网络桥接器和 /或所述 WIFI终端进行鉴权处理。
5、 根据权利要求 4所述的方法， 其特征在于， 所述 WIFI网络桥接器 和所述 WIFI终端的鉴权信息包括： USIM卡信息和 /或证书信息。
6、 根据权利要求 1-3任一项所述的方法， 其特征在于， 所述 LTE通信 链路信息包括 LTE网络的频段信息；
相应的， 在建立与所述 LTE基站收发器的 LTE通信链路时， 该方法进 一步包括： 所述 WIFI网络桥接器根据所述 LTE通信链路信息包括的 LTE 网络的频段信息选择相应的频段接入 LTE网络。
7、 一种 WIFI网络桥接器， 其特征在于， 包括信息获取单元、 鉴权单 元、 和通信链路建立单元； 其中，
所述信息获取单元， 用于获取 LTE通信链路信息；
所述鉴权单元， 用于向 LTE基站收发器发送鉴权请求信息， 接收所述 LTE基站收发器反馈的鉴权响应， 并将所述鉴权响应发送给所述通信链路 建立单元；
所述通信链路建立单元， 用于接收 WIFI终端发送的建立 WIFI连接请 求， 与所述 WIFI终端建立 WIFI通信链路； 并在收到所述鉴权单元发送的 鉴权成功响应后， 根据所述信息获取单元获取的所述 LTE通信链路信息建 立与所述 LTE基站收发器的 LTE通信链路。
8、 根据权利要求 7所述的 WIFI 网络桥接器， 其特征在于， 该 WIFI 网络桥接器还包括数据格式转换单元，用于收到来自所述 WIFI终端的 WIFI 格式的数据帧后，将收到的数据帧转换成 LTE格式的数据帧发送给所述 LTE 基站收发器； 和 /或收到来自所述 LTE基站收发器的 LTE格式的数据帧后， 将收到的数据帧转换成 WIFI格式的数据帧发送给所述 WIFI终端。
9、 根据权利要求 8所述的 WIFI网络桥接器， 其特征在于， 所述数据 格式转换单元， 具体用于： 从收到的所述 WIFI格式的数据帧中提取数据帧 的包头信息、 路由信息以及数据信息， 将提取的各信息与 LTE格式的数据 帧需要的射频连接控制信息组合， 形成 LTE格式的数据帧； 和 /或， 从收到 的所述 LTE格式的数据帧中提取数据帧的包头信息、 路由信息以及数据信 息， 将提取的各信息重新组合， 形成 WIFI格式的数据帧。
10、 一种基于 WIFI的通信系统， 其特征在于， 包括至少一个 WIFI终 端、 至少一个 LTE基站收发器以及至少一个如权利要求 7-9任一项所述的 WIFI网络桥接器； 其中，
所述 WIFI终端， 用于向所述 WIFI网络桥接器发送建立 WIFI连接请 求；
所述 WIFI网络桥接器， 用于获取 LTE通信链路信息， 接收所述 WIFI 终端发送的建立 WIFI连接请求， 与所述 WIFI终端建立 WIFI通信链路； 向所述 LTE基站收发器发送鉴权请求信息， 并在收到所述 LTE基站收发器 反馈的鉴权成功响应后，根据获取的所述 LTE通信链路信息建立与所述 LTE 基站收发器的 LTE通信链路；
所述 LTE基站收发器， 用于接收所述 WIFI网络桥接器发送的鉴权请 求信息， 并向所述 WIFI网络桥接器反馈鉴权响应。
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