CN104104440B - Visible light communication based indoor Femtocell networking communication system - Google Patents
Visible light communication based indoor Femtocell networking communication system Download PDFInfo
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Abstract
本发明公开了一种基于可见光通信的室内Femtocell组网通信系统，包括：用于接收可见光信号的终端；用于为终端提供可见光信号，并接收终端发送的数据请求消息的至少一个可见光光源；用于接收通过可见光光源转发的终端发送的数据请求消息，和对终端进行接入认证的室内基站；与室内基站和核心网通信连接，用于依据接收到的可见光光源转发的终端发送的数据请求消息，在核心网与所述室内基站间进行数据分发和传输，以及完成对终端接入控制的室内网关。本发明实现了一种室内高速率、高质量和低成本的无线接入技术。
The invention discloses an indoor Femtocell networking communication system based on visible light communication, comprising: a terminal for receiving visible light signals; at least one visible light source for providing visible light signals to the terminal and receiving a data request message sent by the terminal; It is used to receive the data request message sent by the terminal forwarded by the visible light source, and the indoor base station to perform access authentication on the terminal; communicate with the indoor base station and the core network, and is used to transmit the data request message sent by the terminal based on the received visible light source , performing data distribution and transmission between the core network and the indoor base station, and an indoor gateway that completes terminal access control. The invention realizes an indoor high-speed, high-quality and low-cost wireless access technology.
Description
技术领域technical field
本发明涉及通信技术领域，更具体的说，涉及一种基于可见光通信的室内Femtocell组网通信系统。The present invention relates to the technical field of communication, and more specifically, relates to an indoor Femtocell networking communication system based on visible light communication.
背景技术Background technique
随着3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)和LTE(Long Term Evolution，长期演进技术)/LTE Advanced等通信标准的成熟渗透，大范围的网络覆盖已基本得到解决，而如何利用有限的频谱资源来满足随时增长的数据业务和对移动通信网容量的迫切需求逐渐成为新的研究热点。尤其在室内环境下，人们的工作和娱乐需求导致流媒体、视频点播、在线游戏等高速业务不断丰富，对无线接入速率要求越来越高。因此，良好的室内无线数据服务将是未来移动通信网络获得成功的关键。With the mature penetration of communication standards such as 3GPP (3rd Generation Partnership Project) and LTE (Long Term Evolution, long-term evolution technology)/LTE Advanced, large-scale network coverage has basically been solved, but how to use It has gradually become a new research hotspot to meet the ever-increasing data services and the urgent demand for mobile communication network capacity with limited spectrum resources. Especially in the indoor environment, people's work and entertainment needs lead to the continuous enrichment of high-speed services such as streaming media, video-on-demand, and online games, and the requirements for wireless access rates are getting higher and higher. Therefore, a good indoor wireless data service will be the key to the success of future mobile communication networks.
面对用户数量的迅速增加以及人们对高速带宽通信的需求，由于LED(Light-Emitting Diode，发光二极管)可见光通信使用光频段传输信息具有宽广的通信带宽，且避免了电磁干扰冲突又无需申请无线频谱，因此，基于LED的VLC(Visible LightCommunication，可见光通信)引起了人们的广泛关注和研究。Faced with the rapid increase in the number of users and people's demand for high-speed bandwidth communication, since LED (Light-Emitting Diode, light-emitting diode) visible light communication uses the optical frequency band to transmit information, it has a wide communication bandwidth, avoids electromagnetic interference conflicts, and does not need to apply for wireless communication. Spectrum, therefore, LED-based VLC (Visible Light Communication, visible light communication) has aroused widespread attention and research.
可见光通信是一种在白光LED技术上发展起来的新兴的光无线通信技术。在完成传统的照明功能的同时，该LED灯还能实现高速的无线通信，具有功耗低、寿命长、尺寸小、易驱动、绿色环保等优点，被视为第四代节能环保型的照明产品。同时，白光LED的响应灵敏度非常高，具有良好的调制特性，因此利用LED进行超高速数据通信，与传统的射频通信和其它光无线通信相比，可见光通信具有发射功率高、无电磁干扰、节约能源等优点。因此，如何将可见光通信作为一种室内高速率、高质量和低成本的无线接入技术，成为无线通信中亟待解决的问题。Visible light communication is an emerging optical wireless communication technology developed on the basis of white light LED technology. While completing the traditional lighting function, the LED lamp can also realize high-speed wireless communication, has the advantages of low power consumption, long life, small size, easy to drive, green and environmental protection, etc., and is regarded as the fourth generation of energy-saving and environment-friendly lighting. product. At the same time, white LEDs have very high response sensitivity and good modulation characteristics. Therefore, using LEDs for ultra-high-speed data communication, compared with traditional radio frequency communication and other optical wireless communications, visible light communication has high transmission power, no electromagnetic interference, and energy saving. energy advantages. Therefore, how to use visible light communication as an indoor high-speed, high-quality and low-cost wireless access technology has become an urgent problem to be solved in wireless communication.
发明内容Contents of the invention
针对上述问题，本发明提供一种基于可见光通信的室内Femtocell组网通信系统，以提供一种室内高速率、高质量和低成本的无线接入技术。技术方案如下：In view of the above problems, the present invention provides an indoor Femtocell networking communication system based on visible light communication to provide an indoor high-speed, high-quality and low-cost wireless access technology. The technical scheme is as follows:
本发明提供一种基于可见光通信的室内Femtocell组网通信系统，包括：The present invention provides an indoor Femtocell networking communication system based on visible light communication, including:
用于接收可见光信号的终端；A terminal for receiving visible light signals;
用于为所述终端提供所述可见光信号，并接收所述终端发送的数据请求消息的至少一个可见光光源；at least one visible light source for providing the visible light signal to the terminal and receiving a data request message sent by the terminal;
用于接收通过所述可见光光源转发的所述终端发送的数据请求消息，和对所述终端进行接入认证的室内基站；An indoor base station for receiving the data request message sent by the terminal forwarded by the visible light source, and performing access authentication for the terminal;
与所述室内基站和核心网通信连接，用于依据接收到的所述可见光光源转发的所述终端发送的数据请求消息，在所述核心网与所述室内基站间进行数据分发和传输，以及完成对所述终端接入控制的室内网关。Communicatively connected with the indoor base station and the core network, for performing data distribution and transmission between the core network and the indoor base station according to the received data request message sent by the terminal forwarded by the visible light source, and An indoor gateway that completes the access control of the terminal.
优选地，当包括多个所述可见光光源时，所述多个所述可见光光源分层设置在所述室内基站覆盖的区域范围内；Preferably, when multiple visible light sources are included, the multiple visible light sources are layered within the area covered by the indoor base station;
其中，每个所述可见光光源分别与所述室内基站通信连接，且每个所述可见光光源占据所述室内基站覆盖的区域范围内的部分区域，用于接收来自所述部分区域内的所述终端发送的数据请求消息。Wherein, each of the visible light sources is communicatively connected with the indoor base station, and each of the visible light sources occupies a part of the area covered by the indoor base station, and is used to receive the The data request message sent by the terminal.
优选地，还包括：Preferably, it also includes:
与所述室内基站通信连接的宏基站。A macro base station communicatively connected to the indoor base station.
优选地，所述终端与所述室内基站间的无线接口仅保留用户平面的功能，所述终端与所述室内基站间的无线接口的控制平面由所述宏基站进行管理，由所述宏基站控制所述终端与所述室内基站间的无线接口的用户平面与控制平面相分离。Preferably, the wireless interface between the terminal and the indoor base station only retains the function of the user plane, the control plane of the wireless interface between the terminal and the indoor base station is managed by the macro base station, and the macro base station The user plane controlling the radio interface between the terminal and the indoor base station is separated from the control plane.
优选地，当所述宏基站控制所述终端与所述室内基站间的无线接口的用户平面与控制平面相分离后，基于所述宏基站发出的控制信令，完成室内Femtocell组网的信道建立与释放的无线资源控制过程。Preferably, after the macro base station controls the user plane and the control plane of the wireless interface between the terminal and the indoor base station, the channel establishment of the indoor Femtocell network is completed based on the control signaling sent by the macro base station and released radio resource control procedures.
优选地，所述室内基站包括：Preferably, the indoor base station includes:
通用链路处理模块，用于为从所述室内网关接收到的数据分配链路资源，生成链路数据，以及用于对从所述终端接收到的数据进行处理，生成网络之间互连协议IP数据包；A general link processing module, configured to allocate link resources for the data received from the indoor gateway, generate link data, and process the data received from the terminal to generate an interconnection protocol between networks IP packets;
无线通信模块组，用于接收所述可见光光源转发的所述终端发送的数据，并将所述可见光光源转发的所述终端发送的数据生成的所述IP数据包发送给所述室内网关，以及用于发送链路数据至所述可见光光源，进而由所述可见光光源转发至所述终端。A wireless communication module set, configured to receive the data sent by the terminal forwarded by the visible light source, and send the IP data packet generated by the data sent by the terminal forwarded by the visible light source to the indoor gateway, and It is used to send link data to the visible light source, and then forwarded to the terminal by the visible light source.
优选地，所述无线通信模块组包括可见光通信模块。Preferably, the wireless communication module set includes a visible light communication module.
优选地，所述无线通信模块组还包括无线局域网通信模块。Preferably, the wireless communication module set further includes a wireless local area network communication module.
优选地，所述终端包括：Preferably, the terminal includes:
信号强度检测模块，用于检测可见光信号强度；The signal strength detection module is used to detect the visible light signal strength;
请求发送模块，用于在所述可见光信号强度满足预设条件时，发送所述数据请求消息。A request sending module, configured to send the data request message when the visible light signal strength meets a preset condition.
优选地，当所述终端未与任何网络进行通信连接时，所述预设条件为所述信号强度检测模块检测到所述可见光信号强度大于预设阈值，且检测到所述可见光信号强度的持续时间大于预设时间阈值，所述请求发送模块用于发送注册消息至所述可见光光源，进而由所述可见光光源转发至所述室内基站，以实现所述终端在所述室内基站形成的网络中的注册；所述注册消息为所述数据请求消息；Preferably, when the terminal is not connected to any network, the preset condition is that the signal strength detection module detects that the visible light signal strength is greater than a preset threshold, and detects that the visible light signal strength lasts When the time is greater than the preset time threshold, the request sending module is used to send a registration message to the visible light source, and then forwarded by the visible light source to the indoor base station, so as to realize that the terminal is in the network formed by the indoor base station registration; the registration message is the data request message;
当所述终端已建立有网络通信连接时，所述预设条件为所述信号强度检测模块检测到所述终端所连接网络的网络信号强度小于预设阈值，且检测到所述可见光信号强度大于预设阈值，所述可见光信号强度的持续时间大于预设时间阈值，所述请求发送模块用于发送切换消息至所述可见光光源，进而由所述可见光光源转发至所述室内基站，以使得所述终端从与所述终端所连接的网络的连接切换到与所述室内基站形成的网络的连接，所述切换消息为所述数据请求消息；When the terminal has established a network communication connection, the preset condition is that the signal strength detection module detects that the network signal strength of the network connected to the terminal is less than a preset threshold, and detects that the visible light signal strength is greater than A preset threshold, the duration of the visible light signal intensity is greater than the preset time threshold, the request sending module is used to send a switching message to the visible light source, and then forwarded by the visible light source to the indoor base station, so that all The terminal switches from being connected to the network connected to the terminal to being connected to the network formed by the indoor base station, and the switching message is the data request message;
当所述终端已与所述室内基站形成的网络建立通信连接时，所述预设条件为所述信号强度检测模块在预设时间周期内无法检测到满足预设强度的可见光信号，所述请求发送模块用于发送注销消息至所述可见光光源，进而由所述可见光光源转发至所述室内基站，以使得所述终端从所述室内基站形成的网络中注销，所述注销消息为所述数据请求消息。When the terminal has established a communication connection with the network formed by the indoor base station, the preset condition is that the signal strength detection module cannot detect a visible light signal that meets the preset strength within a preset time period, and the request The sending module is configured to send a logout message to the visible light source, and then forwarded by the visible light source to the indoor base station, so that the terminal logs out from the network formed by the indoor base station, and the logout message is the data request message.
优选地，所述室内基站包括：Preferably, the indoor base station includes:
认证模块，用于在所述室内基站接收到由所述可见光光源转发的所述终端发送的数据请求消息后，从所述室内网关中获取存储的终端的身份信息，依据所述存储的终端的身份信息和所述终端的身份标识，认证所述终端是否为合法用户；其中，所述终端发送的数据请求消息中包括所述终端的身份标识。An authentication module, configured to acquire the stored identity information of the terminal from the indoor gateway after the indoor base station receives the data request message sent by the terminal forwarded by the visible light source, and obtain the stored identity information of the terminal according to the stored terminal identity information. The identity information and the identity of the terminal authenticate whether the terminal is a legal user; wherein, the data request message sent by the terminal includes the identity of the terminal.
优选地，所述室内网关存储有准入列表，所述准入列表中包括允许接入所述室内网络的终端身份信息；Preferably, the indoor gateway stores an admission list, and the admission list includes terminal identity information that is allowed to access the indoor network;
所述认证模块用于依据所述准入列表，检测所述终端的身份标识是否登记在所述准入列表中，如果所述终端的身份标识登记在所述准入列表中，则确定所述终端为合法用户；如果所述终端的身份标识没有登记在所述准入列表中，则确定所述终端为不合法用户。The authentication module is configured to detect whether the identity of the terminal is registered in the admission list according to the admission list, and if the identity of the terminal is registered in the admission list, determine the The terminal is a legitimate user; if the identity of the terminal is not registered in the admission list, then it is determined that the terminal is an illegal user.
优选地，所述室内网关包括：Preferably, the indoor gateway includes:
注册模块，用于将所述终端注册到所述室内基站形成的网络中；a registration module, configured to register the terminal in the network formed by the indoor base stations;
注销模块，用于将所述终端从所述室内基站形成的网络中进行注销；a deregistration module, configured to deregister the terminal from the network formed by the indoor base station;
拒绝模块，用于拒绝所述终端发送的数据请求消息。A rejection module, configured to reject the data request message sent by the terminal.
应用上述技术方案，本发明提供的基于可见光通信的室内Femtocell组网通信系统中，通过可见光光源提供可见光信号，实现对室内网络的设置。终端将数据请求消息发送至可见光光源，进而由可见光光源转发数据请求消息至室内基站，以实现终端与室内基站的可见光通信，进而室内网关依据终端发送的数据请求消息，在核心网与室内基站间进行数据传输，最终再由室内基站将数据发送给终端，实现了一种室内高速率、高质量和低成本的无线接入技术。Applying the above-mentioned technical solution, in the indoor Femtocell networking communication system based on visible light communication provided by the present invention, visible light signals are provided by a visible light source to realize setting of an indoor network. The terminal sends the data request message to the visible light source, and then the visible light source forwards the data request message to the indoor base station, so as to realize the visible light communication between the terminal and the indoor base station, and then the indoor gateway transmits the data request message between the core network and the indoor base station according to the data request message sent by the terminal. Data transmission is carried out, and finally the indoor base station sends the data to the terminal, realizing an indoor high-speed, high-quality and low-cost wireless access technology.
附图说明Description of drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.
图1为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统的一种结构示意图；FIG. 1 is a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图2为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统的另一种结构示意图；Fig. 2 is another schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图3为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统的再一种结构示意图；FIG. 3 is another schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图4为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统的再一种结构示意图；FIG. 4 is another structural schematic diagram of an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图5为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统的再一种结构示意图；FIG. 5 is another structural schematic diagram of an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图6为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中链路建立的流程图；6 is a flow chart of link establishment in an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图7为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中室内基站的结构示意图；7 is a schematic structural diagram of an indoor base station in an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图8为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中终端的结构示意图；8 is a schematic structural diagram of a terminal in an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图9为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中室内基站的另一种结构示意图；FIG. 9 is another structural schematic diagram of an indoor base station in an indoor Femtocell networking communication system based on visible light communication provided by the present invention;
图10为本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中室内网关的结构示意图。FIG. 10 is a schematic structural diagram of an indoor gateway in an indoor Femtocell networking communication system based on visible light communication provided by the present invention.
具体实施方式detailed description
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做出创造性劳动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。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
首先发明人需要解释说明的是，本发明中的Femtocell即指的是微小区。Firstly, the inventor needs to explain that the Femtocell in the present invention refers to a microcell.
实施例一Embodiment one
请参见图1，其示出了本发明提供的一种基于可见光通信的室内Femtocell组网通信系统的一种结构示意图，包括：终端100、至少一个可见光光源200、室内基站300和室内网关400。其中，Please refer to FIG. 1, which shows a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication provided by the present invention, including: a terminal 100, at least one visible light source 200, an indoor base station 300 and an indoor gateway 400. in,
终端100用于接收可见光信号。The terminal 100 is used for receiving visible light signals.
可见光光源200用于为终端100提供可见光信号，并用于接收终端100发送的数据请求消息。The visible light source 200 is used to provide a visible light signal to the terminal 100 and to receive a data request message sent by the terminal 100 .
室内基站300用于接收通过可见光光源200转发的终端100发送的数据请求消息，以实现终端100与室内基站300间的通信，以及用于实现对终端100的接入认证。The indoor base station 300 is used to receive the data request message sent by the terminal 100 forwarded by the visible light source 200 , so as to implement communication between the terminal 100 and the indoor base station 300 , and to implement access authentication for the terminal 100 .
在本实施例中，对终端100的接入认证具体为对终端100的认证鉴权。In this embodiment, the access authentication of the terminal 100 is specifically the authentication of the terminal 100 .
在本发明中，可见光光源200可以是室内基站300扩展的收发天线。In the present invention, the visible light source 200 may be an extended transceiver antenna of the indoor base station 300 .
室内网关400与室内基站300和核心网500通信连接，用于依据终端100发送的数据请求消息，在核心网500与室内基站300间进行数据分发和传输，以及完成对终端100的接入控制。The indoor gateway 400 communicates with the indoor base station 300 and the core network 500, and is used to distribute and transmit data between the core network 500 and the indoor base station 300 according to the data request message sent by the terminal 100, and complete access control to the terminal 100.
在本实施例中，对终端100的接入控制可以包括实现终端100的注册、注销等。In this embodiment, the access control on the terminal 100 may include implementing registration and deregistration of the terminal 100 .
为了更好的实现对本发明的理解，发明人以本发明应用于用户家庭室内场景为例进行详细说明。请同时参阅图2和图3，其分别示出了本发明提供的一种基于可见光通信的室内Femtocell组网通信系统的再一种结构示意图。In order to better understand the present invention, the inventor takes the application of the present invention to a user's home indoor scene as an example to describe in detail. Please refer to FIG. 2 and FIG. 3 at the same time, which respectively show another schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication provided by the present invention.
本发明中可以包括多个可见光光源200，其中，多个可见光光源200分层设置在室内基站100覆盖的区域范围内。具体地，每个可见光光源200分别与室内基站100通信连接，且每个可见光光源200占据室内基站100覆盖的区域范围内的部分区域，用于接收来自部分区域内的终端100发送的数据请求消息。Multiple visible light sources 200 may be included in the present invention, wherein the multiple visible light sources 200 are layered and arranged within the area covered by the indoor base station 100 . Specifically, each visible light source 200 is respectively communicatively connected with the indoor base station 100, and each visible light source 200 occupies a partial area within the area covered by the indoor base station 100, and is used to receive data request messages sent from terminals 100 in the partial area. .
更形象的说可以理解为，室内基站100设置于用户的家庭室内环境中，其覆盖了用户所有室内环境，比如包括的两个卧室。在该室内基站100覆盖的大区域范围内，每个卧室分别又单独设置一可见光光源200，构成可见光Femtocell小区。其每个可见光Femtocell小区用于承载室内用户的分组数据业务。即在本实施例中，每个可见光光源200均可形成一可见光Femtocell小区。More vividly, it can be understood that the indoor base station 100 is set in the indoor environment of the user's home, which covers all indoor environments of the user, such as two bedrooms included. Within the large area covered by the indoor base station 100, each bedroom is separately provided with a visible light source 200 to form a visible light Femtocell community. Each of its visible light Femtocell cells is used to bear the packet data services of indoor users. That is, in this embodiment, each visible light source 200 can form a visible light Femtocell.
具体地在本发明中，用户包括多个房间，室内基站100为该多个房间提供一个大区域的无线局域环境。其中，每个房间还分别设置有至少一个可见光光源200形成可见光无线局域环境。在房间内形成的可见光无线局域环境中，还可继续通过LED台灯等划分为多个可见光微小区，以支持临时或局部的分组业务需求，实现可见光无线局域环境范围内灵活、有效的分层覆盖。具体地，通过调整可见光光源200的位置，如方向、角度、高度，可以实现对可见光信号的覆盖面积，即在房间内形成的可见光无线局域网络范围大小的控制，通过调整可见光光源200的亮度，可以实现对可见光信号强度大小的控制。需要说明的是，因为可见光信号是伴随可见光光源200的光波传输进行传输的，因此可见光光源200可照射到的地方便存在可见光信号。通过控制开启或关闭可见光光源200实现对可见光无线局域网络的开启或关闭控制。Specifically, in the present invention, the user includes multiple rooms, and the indoor base station 100 provides a large-area wireless local area environment for the multiple rooms. Wherein, each room is also respectively provided with at least one visible light source 200 to form a visible light wireless local area environment. In the visible light wireless local area environment formed in the room, it can continue to be divided into multiple visible light micro-cells through LED desk lamps, etc., to support temporary or local grouping business needs, and realize flexible and effective distribution within the visible light wireless local area environment. layer coverage. Specifically, by adjusting the position of the visible light source 200, such as the direction, angle, and height, the coverage area of the visible light signal, that is, the control of the range of the visible light wireless local area network formed in the room can be realized. By adjusting the brightness of the visible light source 200, The control of the intensity of the visible light signal can be realized. It should be noted that, because the visible light signal is transmitted along with the light wave transmission of the visible light source 200 , the visible light signal can easily exist in places where the visible light source 200 can irradiate. By controlling the visible light source 200 to be turned on or off, the visible light wireless local area network is turned on or off.
因此，本发明支持在可见光Femtocell小区环境下，可以按需布设更小范围内的可见光微小区，以支持临时，或局部的分组业务需求，实现Femtocell范围内灵活、有效的分层覆盖。Therefore, the present invention supports that in the visible light Femtocell environment, visible light microcells in a smaller range can be deployed on demand to support temporary or local packet service requirements, and realize flexible and effective layered coverage within the Femtocell range.
具体地，发明人以图4为例继续进行详细说明。在本实施例中，将图4所示的每个房间分别称之为可见光微小区(即可见光Femtocell)。Specifically, the inventor continues to describe in detail by taking FIG. 4 as an example. In this embodiment, each room shown in FIG. 4 is called a visible light microcell (ie visible light Femtocell) respectively.
在该用户家庭室内构成的可见光无线局域网环境中，天花板上安装有用于将光信号转换为电信号的光电探测器和用于接收光电探测器发送的电信号，并将电信号进行简单处理，调制到可见光光源上变成光信号的可见光通信集线器。在实际应用过程中，可见光无线局域网中可见光通信集线器是可见光通信中的核心部分。其接收来自终端用户的信息，同时分时段地将接收到的信息通过可见光光源以广播的方式发送出去。In the visible light wireless local area network environment formed in the user's home room, a photodetector used to convert the optical signal into an electrical signal and a photodetector used to receive the electrical signal sent by the photodetector are installed on the ceiling, and the electrical signal is simply processed and modulated. A visible light communication hub that turns into an optical signal on a visible light source. In the actual application process, the visible light communication hub in the visible light wireless local area network is the core part of the visible light communication. It receives the information from the end user, and at the same time sends the received information in the form of broadcast through the visible light source.
现有技术中，可见光通信适配器VLC Adapter用于将终端用户的信息调制成光信号，以及接收可见光信号。在本实施例中，终端100具体为具有可以接收、发送可见光信号功能的终端。因此，本发明中的终端100可以为安装有可见光通信适配器的电子设备。In the prior art, a visible light communication adapter VLC Adapter is used for modulating end user information into optical signals and receiving visible light signals. In this embodiment, the terminal 100 is specifically a terminal capable of receiving and sending visible light signals. Therefore, the terminal 100 in the present invention may be an electronic device installed with a visible light communication adapter.
在本实施例中，可见光微小区A中的终端101欲发送数据信息至可见光微小区B中的终端102时，终端101中的可见光通信适配器将数据信息调制成光信号发送至光电探测器，进而由光电探测器将光信号转换为电信号发送至可见光通信集线器，可见光通信集线器再将电信号进行简单处理，调制到可见光光源200上变成光信号发送至可见光微小区B中的终端102，终端102中的可见光通信适配器将光信号接收，并将属于终端102的信息解调出来，输入终端102读取，从而实现可见光无线局域网内的终端间的D2D(Device-to-Device，终端直通)通信。即本发明支持处于同一室内可见光无线局域网中的终端进行终端间的直接通信。In this embodiment, when the terminal 101 in the visible light microcell A intends to send data information to the terminal 102 in the visible light microcell B, the visible light communication adapter in the terminal 101 modulates the data information into an optical signal and sends it to the photodetector, and then The photodetector converts the optical signal into an electrical signal and sends it to the visible light communication hub, and the visible light communication hub simply processes the electrical signal, modulates it to the visible light source 200 to become an optical signal, and sends it to the terminal 102 in the visible light microcell B. The visible light communication adapter in 102 receives the optical signal, demodulates the information belonging to the terminal 102, and inputs it to the terminal 102 to read, thereby realizing D2D (Device-to-Device, terminal direct communication) communication between terminals in the visible light wireless local area network . That is, the present invention supports direct communication between terminals in the same indoor visible light wireless local area network.
在本发明中，可见光光源200可以为白光LED灯。In the present invention, the visible light source 200 may be a white LED lamp.
上述实施例说明的是可见光无线局域网内终端间的D2D数据传输过程，请参阅图5，其示出了本发明提供的一种基于可见光通信的室内Femtocell组网通信系统的再一种结构示意图。本实施例基于跨Femtocell小区的终端进行数据传输的应用场景。The above-mentioned embodiments illustrate the D2D data transmission process between terminals in a visible light wireless local area network. Please refer to FIG. 5 , which shows another schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication provided by the present invention. This embodiment is based on an application scenario in which terminals across Femtocell cells perform data transmission.
在实际应用过程中，每个用户家庭构成一个可见光无线局域网，以下统称为Femtocell小区。同时本发明还包括覆盖在一定区域内所有Femtocell小区之上的宏小区。其中，宏小区包括宏基站600。终端100与Femtocell小区中室内基站300之间的无线接口仅保留用户平面的功能，其控制平面则交由宏基站600来实现和管理。即本发明由宏基站600控制终端100与室内基站300间的无线接口的用户平面与控制平面相分离。In the actual application process, each user family forms a visible light wireless local area network, which is collectively referred to as a Femtocell cell below. At the same time, the present invention also includes a macro cell covering all Femtocell cells in a certain area. Wherein, the macro cell includes a macro base station 600 . The wireless interface between the terminal 100 and the indoor base station 300 in the Femtocell cell only retains the function of the user plane, and the control plane is handed over to the macro base station 600 for implementation and management. That is, in the present invention, the macro base station 600 controls the user plane and the control plane of the wireless interface between the terminal 100 and the indoor base station 300 .
通过由宏基站600控制终端100与室内基站300间的无线接口的控制平面与用户平面相分离能够大幅提升无线网络容量的同时，还能保证宏基站600有效的移动性管理和网络覆盖，使Femtocell小区完全脱离传统基站体系架构，实现异构网络的有效融合。此外，终端100与室内基站300间的无线接口的控制平面与用户平面相分离使得Femtocell小区具有高度灵活性和自主性，且使得宏基站600、室内基站300以及终端100分工明确，简化了异构网络架构，易于实现。By separating the control plane and the user plane of the wireless interface between the terminal 100 and the indoor base station 300 controlled by the macro base station 600, the capacity of the wireless network can be greatly improved, and the effective mobility management and network coverage of the macro base station 600 can be ensured, so that Femtocell The cell is completely separated from the traditional base station architecture to realize the effective integration of heterogeneous networks. In addition, the separation of the control plane and the user plane of the wireless interface between the terminal 100 and the indoor base station 300 makes the Femtocell cell highly flexible and autonomous, and makes the macro base station 600, the indoor base station 300, and the terminal 100 have a clear division of labor, simplifying heterogeneous Network architecture, easy to implement.
在本实施例中，Femtocell小区与宏小区支持一般主从式通信方式。宏基站600工作保持在现有频道上，室内基站300被分配以较高的频段。这样的配置使得室内基站300的控制平面仍处于更为可靠的宏蜂窝层的控制之下，系统容量也会因分离后的用户平面获得可见光通信的巨大带宽而得到提升。在小区设计和部署方面也不需要考虑宏基站600与Femtocell小区之间的干扰而重新进行小区规划、配置和优化。In this embodiment, the Femtocell cell and the macro cell support a general master-slave communication manner. The macro base station 600 keeps working on the existing frequency band, and the indoor base station 300 is allocated a higher frequency band. Such a configuration makes the control plane of the indoor base station 300 still under the control of a more reliable macro-cell layer, and the system capacity will also be improved because the separated user plane obtains huge bandwidth of VLC. In terms of cell design and deployment, there is no need to re-perform cell planning, configuration, and optimization in consideration of the interference between the macro base station 600 and the Femtocell cell.
在本发明中，可见光室内构成的Femtocell小区与传统蜂窝小区不同，没有小区特定的控制信息和控制信道，其完成数据交互依赖于宏蜂窝的信令控制。具体地，Femtocell小区通过控制平面与用户平面的分离，在宏蜂窝的控制下完成Femtocell小区的信道建立与释放等无线资源控制过程。如图6所示。宏基站600发出控制信令，负责更大范围内的网络覆盖，保障基础的、可靠的网络控制和管理服务；Femtocell小区基于该信令为用户业务提供数据传输通路，专注于室内区间的高速无线数据覆盖。以宏基站600发出的控制信令为为用户业务提供数据传输链路为例进行说明，方法包括：In the present invention, the Femtocell cell formed in the visible light room is different from the traditional cell, there is no cell-specific control information and control channel, and the completion of data interaction depends on the signaling control of the macro cell. Specifically, the Femtocell cell completes radio resource control processes such as channel establishment and release of the Femtocell cell under the control of the macro cell through the separation of the control plane and the user plane. As shown in Figure 6. The macro base station 600 sends out control signaling, which is responsible for wider network coverage and guarantees basic and reliable network control and management services; the Femtocell cell provides data transmission channels for user services based on this signaling, focusing on high-speed wireless in indoor areas data overwrite. Taking the control signaling sent by the macro base station 600 as an example to provide a data transmission link for user services, the method includes:
步骤101，终端100向可见光光源200发送链路建立请求消息；Step 101, the terminal 100 sends a link establishment request message to the visible light source 200;
步骤102，可见光光源200转发链路建立请求消息至室内基站300；Step 102, the visible light source 200 forwards the link establishment request message to the indoor base station 300;
步骤103，室内基站300向宏基站600转发链路建立请求消息；Step 103, the indoor base station 300 forwards the link establishment request message to the macro base station 600;
步骤104，宏基站600对该链路建立请求消息进行决策，判断是否接受该链路建立请求。若接受，执行步骤105，若不接受，执行步骤108。In step 104, the macro base station 600 makes a decision on the link establishment request message, and judges whether to accept the link establishment request. If accepted, execute step 105; if not, execute step 108.
步骤105，宏基站600根据链路建立请求消息向室内基站300发送链路控制消息；Step 105, the macro base station 600 sends a link control message to the indoor base station 300 according to the link establishment request message;
步骤106，室内基站300将链路控制消息发送至可见光光源200；Step 106, the indoor base station 300 sends a link control message to the visible light source 200;
步骤107，可见光光源200转发链路控制消息至终端100。最终由终端100和室内基站300共同完成链路建立。Step 107 , the visible light source 200 forwards the link control message to the terminal 100 . Finally, the terminal 100 and the indoor base station 300 jointly complete link establishment.
步骤108，拒绝链路建立请求。Step 108, rejecting the link establishment request.
同理，当终端100向可见光光源200发送链路释放请求消息时，也经历上述实现步骤。对此，申请人不在加以赘述。Similarly, when the terminal 100 sends a link release request message to the visible light source 200, it also goes through the above implementation steps. In this regard, the applicant will not repeat it.
因此，本发明通过宏基站600发出的控制信令完成了室内Femtocell组网的信道建立与释放的无线资源控制过程。当宏基站600完成室内Femtocell组网的信道建立后，室内Femtocell小区内的终端100、可见光光源200和室内基站400之间完成数据的交互。Therefore, the present invention completes the radio resource control process of channel establishment and release in the indoor Femtocell network through the control signaling sent by the macro base station 600 . After the macro base station 600 completes the channel establishment of the indoor Femtocell networking, the terminal 100 in the indoor Femtocell cell, the visible light source 200 and the indoor base station 400 complete data interaction.
在本实施例中，可参阅图7，其示出了本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中室内基站的结构示意图。室内基站300包括：In this embodiment, refer to FIG. 7 , which shows a schematic structural diagram of an indoor base station in an indoor Femtocell networking communication system based on visible light communication provided by the present invention. The indoor base station 300 includes:
通用链路处理模块310，用于为从室内网关400接收到的数据分配链路资源，生成链路数据，以及用于对从终端100接收到的数据进行处理，生成IP(Internet Protocol，网络之间互连协议)数据包；The general link processing module 310 is configured to allocate link resources for the data received from the indoor gateway 400, generate link data, and process the data received from the terminal 100 to generate an IP (Internet Protocol, network Interconnection Protocol) packets;
在本实施例中，通用链路处理模块310可以设置于无线接口协议栈的链路层和网络层之间。In this embodiment, the general link processing module 310 may be set between the link layer and the network layer of the wireless interface protocol stack.
无线通信模块组320，用于接收可见光光源200转发的终端100发送的数据，并将可见光光源200转发的终端100发送的数据生成的IP数据包发送给室内网关400，以及用于发送链路数据至可见光光源200，进而由可见光光源200转发至终端100。其中，无线通信模块组320包括至少一个可见光通信模块，以支持可见光通信技术。较优的，无线通信模块组320还可以包括多种无线通信模块，如无线局域网通信模块，使得室内基站300可以接收和发送终端100使用不同无线接入技术时需要传输的数据信息。The wireless communication module group 320 is used to receive the data sent by the terminal 100 forwarded by the visible light source 200, and send the IP data packet generated by the data sent by the terminal 100 forwarded by the visible light source 200 to the indoor gateway 400, and to send link data to the visible light source 200, and then forwarded by the visible light source 200 to the terminal 100. Wherein, the wireless communication module group 320 includes at least one visible light communication module to support visible light communication technology. Preferably, the wireless communication module set 320 may also include various wireless communication modules, such as a wireless local area network communication module, so that the indoor base station 300 can receive and send data information that needs to be transmitted when the terminal 100 uses different wireless access technologies.
具体地，终端100使用不同的无线接入技术发送上行数据至可见光光源200，进而由可见光光源200转发至室内基站300。室内基站300中的无线通信模块组320接收终端100发送的上行数据后，将其转发至通用链路处理模块310。通用链路处理模块310将终端100发送的上行数据进行处理，生成上行IP数据包，进而由无线通信模块组320将上行IP数据包发送给室内网关400。最后，由室内网关400将上行IP数据包发送至核心网500。核心网500依据接收到的上行IP数据包找到符合条件的数据生成下行IP数据包发送至室内网关400，进而室内网关400将其转发至室内基站300。室内基站300中的通用链路处理模块310接收到室内网关400发送的下行IP数据包，并为之分配链路资源，生成对应的链路数据，无线通信模块组320基于链路的选择，发送链路数据至可见光光源200，进而由可见光光源200转发至终端100。因此，本发明实现了跨不同Femtocell小区的终端通信。即本发明支持处于不同室内可见光无线局域网中的终端进行通信。Specifically, the terminal 100 uses different wireless access technologies to send uplink data to the visible light source 200, and then the visible light source 200 forwards it to the indoor base station 300. The wireless communication module group 320 in the indoor base station 300 forwards the uplink data sent by the terminal 100 to the general link processing module 310 after receiving it. The general link processing module 310 processes the uplink data sent by the terminal 100 to generate an uplink IP data packet, and then the wireless communication module group 320 sends the uplink IP data packet to the indoor gateway 400 . Finally, the indoor gateway 400 sends the uplink IP data packet to the core network 500 . The core network 500 finds qualified data according to the received uplink IP data packet, generates a downlink IP data packet and sends it to the indoor gateway 400 , and then the indoor gateway 400 forwards it to the indoor base station 300 . The general link processing module 310 in the indoor base station 300 receives the downlink IP data packet sent by the indoor gateway 400, and allocates link resources for it, and generates corresponding link data, and the wireless communication module group 320 based on link selection, sends The link data is sent to the visible light source 200 , and then forwarded by the visible light source 200 to the terminal 100 . Therefore, the present invention realizes terminal communication across different Femtocell cells. That is, the present invention supports communication between terminals in different indoor visible light wireless local area networks.
同理，本发明还支持分别处于室内可见光无线局域网中的终端和处于宏基站600所形成的网络中的终端间进行通信。同上述实施例仅不同的是，无线通信模块组320将上行IP数据包发送给室内网关400后，由室内网关400将上行IP数据包发送至宏基站600。同时，宏基站600将下行IP数据包发送至室内网关400。即本发明在跨不同小区间通信时，通过不同对应的基站进行数据中转，建立处于不同网络中的终端间的通信。Similarly, the present invention also supports communication between terminals respectively located in the indoor visible light wireless local area network and terminals located in the network formed by the macro base station 600 . The only difference from the above embodiment is that after the wireless communication module set 320 sends the uplink IP data packet to the indoor gateway 400 , the indoor gateway 400 sends the uplink IP data packet to the macro base station 600 . At the same time, the macro base station 600 sends the downlink IP data packet to the indoor gateway 400 . That is, when the present invention communicates across different cells, data transfer is performed through different corresponding base stations, and communication between terminals in different networks is established.
在本实施例中，室内基站300与可见光光源200集成于一体，也可分别设置在室内环境中。较优的，可见光光源200可以是室内基站300扩展的收发天线。In this embodiment, the indoor base station 300 and the visible light source 200 are integrated into one body, and may also be separately installed in an indoor environment. Preferably, the visible light source 200 may be an extended transceiver antenna of the indoor base station 300 .
应用本发明的上述技术方案，本发明提供的基于可见光通信的室内通信系统中，通过可见光光源200提供可见光信号，实现对室内网络的设置。终端100将数据请求消息发送至可见光光源200，进而由可见光光源200转发数据请求消息至室内基站300，以实现终端100与室内基站300的可见光通信，进而室内网关400依据终端100发送的数据请求消息，在核心网500与室内基站300间进行数据传输，最终再由室内基站300将数据发送给终端100，实现了一种室内高速率、高质量和低成本的无线接入技术。Applying the above-mentioned technical solution of the present invention, in the indoor communication system based on visible light communication provided by the present invention, the visible light source 200 provides visible light signals to realize the setting of the indoor network. The terminal 100 sends the data request message to the visible light source 200, and then the visible light source 200 forwards the data request message to the indoor base station 300, so as to realize the visible light communication between the terminal 100 and the indoor base station 300, and then the indoor gateway 400 transmits the data request message according to the terminal 100. , data transmission is performed between the core network 500 and the indoor base station 300, and finally the indoor base station 300 sends the data to the terminal 100, realizing an indoor high-speed, high-quality and low-cost wireless access technology.
在上述实施例的基础上，请参阅图8，其示出了本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中终端的结构示意图。终端100包括：信号强度检测模块110和请求发送模块120。其中，On the basis of the above embodiments, please refer to FIG. 8 , which shows a schematic structural diagram of a terminal in an indoor Femtocell networking communication system based on visible light communication provided by the present invention. The terminal 100 includes: a signal strength detection module 110 and a request sending module 120 . in,
信号强度检测模块110，用于检测可见光信号强度；A signal strength detection module 110, configured to detect the visible light signal strength;
请求发送模块120，用于在可见光信号强度满足预设条件时，发送数据请求消息。The request sending module 120 is configured to send a data request message when the visible light signal strength meets a preset condition.
其中，数据请求消息可以包括注册消息、注销消息、切换消息等。Wherein, the data request message may include a registration message, a logout message, a switching message, and the like.
下面，发明人就数据请求消息分别为注册消息、注销消息、切换消息这三种情况进行阐述。In the following, the inventor elaborates on the three situations in which the data request message is a registration message, a deregistration message, and a handover message.
当终端100未与任何网络进行通信连接时：When the terminal 100 is not connected to any network:
当终端100中的信号强度检测模块110检测到可见光信号强度大于预设阈值，且检测到可见光信号强度的持续时间大于预设时间阈值，表明当前有比较稳定且信号较强的网络环境可供终端100接入。此时，终端100中的请求发送模块120发送注册消息至可见光光源200，进而由可见光光源200转发至室内基站300，以实现终端100在室内基站300形成的网络中的注册。其中，所述注册消息为所述数据请求消息。When the signal strength detection module 110 in the terminal 100 detects that the visible light signal strength is greater than the preset threshold, and the duration of the detected visible light signal strength is greater than the preset time threshold, it indicates that there is currently a relatively stable network environment with strong signals available for the terminal 100 access. At this time, the request sending module 120 in the terminal 100 sends a registration message to the visible light source 200, and then the visible light source 200 forwards it to the indoor base station 300, so as to realize the registration of the terminal 100 in the network formed by the indoor base station 300. Wherein, the registration message is the data request message.
当终端100已建立有网络通信连接时：When the terminal 100 has established a network communication connection:
当终端100中的信号强度检测模块110检测到终端100所连接网络的网络信号强度小于预设阈值，且检测到可见光信号强度大于预设阈值，可见光信号强度的持续时间大于预设时间阈值，表明当前有相较于终端100已经连接的网络的更好的网络环境可供终端100选择接入。此时用户可根据用户自己的实际需求，选择控制终端100切换到室内基站300形成的网络中。此时，终端100中的请求发送模块120发送切换消息至可见光光源200，进而由可见光光源200转发至室内基站300，以使得终端100从与终端100所连接的网络的连接切换到与室内基站300形成的网络的连接。其中，所述切换消息为所述数据请求消息。When the signal strength detection module 110 in the terminal 100 detects that the network signal strength of the network connected to the terminal 100 is less than the preset threshold, and detects that the visible light signal strength is greater than the preset threshold, and the duration of the visible light signal strength is greater than the preset time threshold, it indicates Currently, there is a better network environment than the network to which the terminal 100 has already connected, which the terminal 100 can choose to access. At this time, the user may select the control terminal 100 to switch to the network formed by the indoor base stations 300 according to the actual needs of the user. At this time, the request sending module 120 in the terminal 100 sends a switching message to the visible light source 200, and then the visible light source 200 forwards it to the indoor base station 300, so that the terminal 100 switches from the connection with the network connected to the terminal 100 to the indoor base station 300. The connections that form the network. Wherein, the switching message is the data request message.
当终端100已与室内基站300形成的网络建立通信连接时：When the terminal 100 has established a communication connection with the network formed by the indoor base station 300:
当终端100中的信号强度检测模块110在预设时间周期内无法检测到满足预设强度的可见光信号，表明当前终端100与室内基站300形成的网络连接已断开，或表明当前室内基站300形成的网络环境发生故障，不适合终端100接入。此时，终端100中的请求发送模块120发送注销消息至可见光光源200，进而由可见光光源200转发至室内基站300，以使得终端100从室内基站300形成的网络中注销。所述注销消息为所述数据请求消息。When the signal strength detection module 110 in the terminal 100 cannot detect a visible light signal that meets the preset strength within the preset time period, it indicates that the current network connection between the terminal 100 and the indoor base station 300 has been disconnected, or that the current indoor base station 300 has formed A fault occurs in the network environment of , which is not suitable for terminal 100 to access. At this time, the request sending module 120 in the terminal 100 sends a logout message to the visible light source 200 , and then the visible light source 200 forwards it to the indoor base station 300 , so that the terminal 100 logs out from the network formed by the indoor base station 300 . The logout message is the data request message.
需要说明的是，在上述实施例中，预设阈值、预设时间阈值、预设时间周期以及预设强度等均可由系统研发人员在系统开发时期根据实际经验定义设置好，也可由用户自行定义。It should be noted that, in the above embodiments, the preset threshold, preset time threshold, preset time period, and preset intensity can be defined and set by system developers during the system development period according to actual experience, or can be defined by users themselves. .
在上述实施例的基础上，请参阅图9，其示出了本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中室内基站的另一种结构示意图。室内基站300还包括：认证模块330。其中，On the basis of the above embodiments, please refer to FIG. 9 , which shows another schematic structural diagram of an indoor base station in an indoor Femtocell networking communication system based on visible light communication provided by the present invention. The indoor base station 300 also includes: an authentication module 330 . in,
认证模块330，用于在室内基站300接收到由可见光光源200转发的终端100发送的数据请求消息后，从室内网关400中获取存储的终端的身份信息，依据存储的终端的身份信息和终端100的身份标识，认证终端100是否为合法用户。The authentication module 330 is configured to obtain the stored identity information of the terminal from the indoor gateway 400 after the indoor base station 300 receives the data request message sent by the terminal 100 forwarded by the visible light source 200, and obtain the stored identity information of the terminal according to the stored identity information of the terminal and the terminal 100 ID to verify whether the terminal 100 is a legitimate user.
其中，终端100发送的数据请求消息中包括终端100的身份标识。Wherein, the data request message sent by the terminal 100 includes the identity of the terminal 100 .
在本发明中，室内基站300能够承载的用户终端的数量是一定的。为了保证室内基站300自身的业务承载能力，室内基站300并不是会接收任一终端100发送的数据请求消息，并与之建立网络通信连接。而是通过采用认证的方式，确定终端100是否为合法用户。当确定终端100为合法用户，表明当前终端100是与室内基站300进行签约的用户，室内基站300允许接收终端100发送的数据请求消息。当确定终端100为不合法用户，表明当前终端100不是与室内基站300进行签约的用户，室内基站300拒绝响应终端100发送的数据请求消息。In the present invention, the number of user terminals that the indoor base station 300 can carry is certain. In order to ensure the service bearing capacity of the indoor base station 300 itself, the indoor base station 300 will not receive the data request message sent by any terminal 100 and establish a network communication connection with it. Instead, it is determined whether the terminal 100 is a legitimate user by adopting an authentication method. When it is determined that the terminal 100 is a legal user, it indicates that the current terminal 100 is a user who has signed a contract with the indoor base station 300 , and the indoor base station 300 is allowed to receive the data request message sent by the terminal 100 . When it is determined that the terminal 100 is an illegal user, it indicates that the current terminal 100 is not a user who has signed a contract with the indoor base station 300 , and the indoor base station 300 refuses to respond to the data request message sent by the terminal 100 .
具体地，终端100发送的数据请求消息中包括表示终端100身份的身份标识。室内基站300接收到终端100发送的数据请求消息后，从室内网关400中获取存储的终端100的身份信息。更具体的，室内网关400存储有准入列表，所述准入列表中包括允许接入室内网络的终端身份信息。认证模块310依据所述准入列表，检测终端100的身份标识是否登记在准入列表中。如果终端100的身份标识登记在准入列表中，则确定终端100为合法用户；如果终端100的身份标识没有登记在准入列表中，则确定终端100为不合法用户。Specifically, the data request message sent by the terminal 100 includes an identity indicating the identity of the terminal 100 . After receiving the data request message sent by the terminal 100 , the indoor base station 300 acquires the stored identity information of the terminal 100 from the indoor gateway 400 . More specifically, the indoor gateway 400 stores an admission list, and the admission list includes identity information of terminals allowed to access the indoor network. The authentication module 310 checks whether the identity of the terminal 100 is registered in the admission list according to the admission list. If the identity of the terminal 100 is registered in the admission list, it is determined that the terminal 100 is a legitimate user; if the identity of the terminal 100 is not registered in the admission list, it is determined that the terminal 100 is an illegal user.
此外，本发明还可以包括认证模块330设置有允许接入的最大用户数，当接收到终端100发送的数据请求信息后，认证模块330判断当前已接入的终端个数是否达到认证模块330设置的允许接入的最大用户数，如果当前已接入的终端个数小于认证模块330设置的允许接入的最大用户数，表明当前室内基站300仍有接入能力，接收终端100发送的数据请求消息进行响应。In addition, the present invention may also include that the authentication module 330 is set with the maximum number of users allowed to access, and after receiving the data request information sent by the terminal 100, the authentication module 330 judges whether the number of currently accessed terminals reaches the number set by the authentication module 330. The maximum number of users allowed to access, if the number of currently accessed terminals is less than the maximum number of users allowed to access set by the authentication module 330, it indicates that the current indoor base station 300 still has access capabilities, and the data request sent by the terminal 100 is received message in response.
在上述实施例的基础上，请参阅图10，其示出了本发明提供的一种基于可见光通信的室内Femtocell组网通信系统中室内网关的结构示意图。室内网关400包括：注册模块410、注销模块420和拒绝模块430。其中，On the basis of the above embodiments, please refer to FIG. 10 , which shows a schematic structural diagram of an indoor gateway in an indoor Femtocell networking communication system based on visible light communication provided by the present invention. The indoor gateway 400 includes: a registration module 410 , a logout module 420 and a rejection module 430 . in,
注册模块410，用于将终端100注册到室内基站300形成的网络中。The registration module 410 is configured to register the terminal 100 in the network formed by the indoor base stations 300 .
注销模块420，用于将终端100从室内基站300形成的网络中进行注销。The deregistration module 420 is configured to deregister the terminal 100 from the network formed by the indoor base stations 300 .
拒绝模块430，用于拒绝终端100发送的数据请求消息。The rejection module 430 is configured to reject the data request message sent by the terminal 100 .
在本实施例中，当认证模块330确定终端100为合法用户时，接收终端100发送的注册消息或注销消息，室内网关400中的注册模块410依据终端100发送的注册消息将终端100注册到室内基站300形成的网络中；室内网关400中的注销模块420依据终端100发送的注销消息将终端100从室内基站300形成的网络中进行注销。当认证模块330确定终端100为不合法用户时，室内网关400中的拒绝模块430拒绝终端100发送的数据请求消息。In this embodiment, when the authentication module 330 determines that the terminal 100 is a legal user, it receives a registration message or a deregistration message sent by the terminal 100, and the registration module 410 in the indoor gateway 400 registers the terminal 100 in the indoor according to the registration message sent by the terminal 100. In the network formed by the base stations 300 ; the deregistration module 420 in the indoor gateway 400 deregisters the terminal 100 from the network formed by the indoor base stations 300 according to the deregistration message sent by the terminal 100 . When the authentication module 330 determines that the terminal 100 is an illegal user, the rejection module 430 in the indoor gateway 400 rejects the data request message sent by the terminal 100 .
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. For the same and similar parts in each embodiment, refer to each other, that is, Can.
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.
以上对本发明所提供的基于可见光通信的室内Femtocell组网通信系统进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。The above is a detailed introduction to the indoor Femtocell networking communication system based on visible light communication provided by the present invention. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the present invention. The method of the invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be understood To limit the present invention.
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