CN105681289A - SIP-based intelligent terminal cluster intercom system - Google Patents

Abstract

The invention discloses a SIP-based intelligent terminal cluster intercom system, which includes at least two intelligent terminals, wherein the intelligent terminal includes a wireless communication module, a SIP service management module, an intercom module, a database management module and a user monitoring module ;Arbitrarily select an intelligent terminal as a networking terminal, and other intelligent terminals are all as non-networking terminals; the wireless communication module provides the establishment and connection of the wireless network of the intelligent terminal equipment; the SIP service management module is used for the management of SIP sessions; the intercom The module provides cluster intercom for users in the local area network; the user monitoring module is used to monitor the power and network status information of the intelligent terminal in the local area network; the intelligent terminal also includes a location positioning module, which is used to locate the geographic location information of users in the same network. The invention realizes the transplantation of the SIP server function to the intelligent terminal, fully considers the easy power consumption of the mobile device, and realizes the self-organizing function of the network connection of the mobile device in the local area network.

Description

A SIP-based intelligent terminal cluster intercom system

technical field

The invention relates to the technical field of wireless communication, in particular to a SIP-based intelligent terminal cluster intercom system.

Background technique

At present, wireless communication technology continues to develop along with the improvement of human living standards. With the rapid development of smart phones, communication methods and life services have also begun to evolve, becoming more portable, low-cost and intelligent. VoIP (voice over Internet protocol, IP phone), a communication method that digitizes analog signals and packages data in real time on the globally interconnected Internet, has gradually been recognized, and various protocols applied to VoIP have also achieved rapid development. Currently the most popular VoIP signaling protocol is the SIP protocol (SessionInitializationProtocol). The SIP protocol is a text-encoded IP application layer signaling control protocol, which is mainly used to create, modify and release sessions of one or more participants. In recent years, benefiting from advantages such as simplicity, flexibility, openness, and easy expansion, SIP has been more and more widely used. The intelligent terminal equipment platform relies on its powerful functions, good interface, and extensive commercial support. Become one of the most popular mobile phone operating systems today. Although many trunking intercom functions have been implemented on smart terminals, there are generally the following problems and deficiencies:

1. The system usually includes three parts: wireless subsystem, dispatching subsystem, and interconnection subsystem, and each part includes its corresponding component equipment, so the network construction is complicated and the maintenance cost is high;

2. The power consumption of smart devices is fast. If the power is not replenished in time during networking, the cluster intercom system cannot be used for a long time;

3. It is greatly affected by the environment, and it is difficult to use in the field or sudden scene with poor wireless signal;

4. The existing intelligent terminal equipment intercom system is highly dependent on remote services, the network is greatly affected by the communication environment, and the problem of exiting the system due to insufficient power during use.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a SIP-based intelligent terminal cluster intercom system, which runs on intelligent terminals, adopts a distributed cluster communication mode, and integrates servers and clients ; Add a SIP service management module to the system to manage SIP sessions, use the portable database in the smart terminal device to realize the function of the database server, move the remote server to the local area, and reduce the system's dependence on other devices; The communication module realizes the establishment and connection of the local area network, and adds a user monitoring module to the system to monitor the power of the smart terminal, and realizes the self-organizing network function of the smart terminal with the wireless communication module.

The present invention adopts the following technical solutions for solving the problems of the technologies described above:

A SIP-based smart terminal cluster intercom system proposed according to the present invention includes at least two smart terminals, wherein the smart terminal includes a wireless communication module, a SIP service management module, an intercom module, a database management module and user monitoring module; arbitrarily select an intelligent terminal as a networking terminal, and other intelligent terminals as non-networking terminals; among them,

The wireless communication module in the networking terminal is used to start the wireless hotspot to establish a wireless local area network, and receive connection requests from the wireless communication modules in other intelligent terminals;

The SIP service management module in the networking terminal is used to randomly generate a user name and password for the SIP service when other smart terminals join the wireless local area network, and the user name and password are associated with the IP address of the smart terminal and registered for the SIP service , after successful registration, store the user name, password and IP address in the database management module in the networking terminal;

The user monitoring module in the networking terminal is used to monitor the power of the current networking terminal in real time, and if the power is lower than the preset minimum power threshold, output a detection signal to the user monitoring module in other non-networking terminals;

The user monitoring module in the non-networking terminal is used to output the monitored power to the database management module for storage when receiving the detection signal, and the user monitoring module in the networking terminal reads the power in the database management module, and Select the smart terminal with the most power as the new networking terminal to re-network, trigger the SIP service management module of the new networking terminal, and update the IP addresses, power information, user names and passwords of all smart terminals in the new network;

The intercom module is used to initiate an intercom request and output it to the SIP service management module in the networking terminal through the wireless communication module; the SIP service management module receives the intercom request and forwards the intercom to all other intelligent terminals through the wireless communication module Request to establish SIP session connections for all smart terminals.

As a further optimization scheme of a SIP-based intelligent terminal cluster intercom system according to the present invention, the intelligent terminal also includes a position positioning module and a display module; wherein, the position positioning module is used to locate the geographical position of the intelligent terminal , and transmit the geographic location to the display modules in other smart terminals through the wireless communication module.

As a further optimization scheme of a SIP-based intelligent terminal cluster intercom system according to the present invention, the intercom module realizes the intercom function through the SIP protocol, and when realizing the cluster intercom, the communication mode adopted is simplex communication; When one smart terminal only talks to another smart terminal, the communication mode adopted is duplex communication.

As a further optimization scheme of a SIP-based intelligent terminal cluster intercom system described in the present invention, the implementation of the SIP protocol in the intercom module is expanded and transplanted on the basis of the open source SIP protocol stack, including the core protocol stack and signaling control two parts.

As a further optimization scheme of the SIP-based intelligent terminal cluster intercom system of the present invention, when the wireless communication module transmits user information data, it uses the TCP protocol for transmission.

Compared with the prior art, the present invention adopts the above technical scheme and has the following technical effects:

(1) The system adopts a distributed cluster intercom mode, without a dedicated server, and each terminal in the network can act as a server function, reducing the dependence and complexity of the system on other devices;

(2) When it is detected that the power of the networking equipment in the network is insufficient, the smart terminal device with the highest power in the network can be selected as the new networking equipment to re-network, improving the system usage time and reliability;

(3) The system is light and convenient, and it can realize fast networking and easy maintenance in the case of poor communication environment.

Description of drawings

FIG. 1 is a block diagram of an intelligent terminal in the trunking intercom system of the present invention.

Fig. 2 is a schematic interface diagram of the cluster intercom system based on the intelligent terminal equipment provided by the present invention.

Fig. 3 is a flowchart of the operation of the present invention.

Fig. 4 is a flow chart of the user monitoring module of the present invention.

detailed description

Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

As shown in FIG. 1 , it is a block diagram of an intelligent terminal in the trunking intercom system of the present invention. Including at least two intelligent terminals, wherein the intelligent terminal includes a wireless communication module, a SIP service management module, an intercom module, a database management module and a user monitoring module; any intelligent terminal is selected as a networking terminal, and other intelligent terminals are used as Non-networking terminal; wherein, FIG. 3 is a flow chart of the operation of the present invention. details as follows:

The wireless communication module in the networking terminal is used to start the wireless hotspot to establish a wireless local area network, and receive connection requests from the wireless communication modules in other intelligent terminals;

The SIP service management module in the networking terminal is used to randomly generate a user name and password for the SIP service when other smart terminals join the wireless local area network, and the user name and password are associated with the IP address of the smart terminal and registered for the SIP service , after successful registration, store the user name, password and IP address in the database management module in the networking terminal;

The user monitoring module in the networking terminal is used to monitor the power of the current networking terminal in real time, and if the power is lower than the preset minimum power threshold, output a detection signal to the user monitoring module in other non-networking terminals;

The user monitoring module in the non-networking terminal is used to output the monitored power to the database management module for storage when receiving the detection signal, and the user monitoring module in the networking terminal reads the power in the database management module, and Select the smart terminal with the most power as the new networking terminal to re-network, trigger the SIP service management module of the new networking terminal, and update the IP addresses, power information, user names and passwords of all smart terminals in the new network;

The intercom module is used to initiate an intercom request and output it to the SIP service management module in the networking terminal through the wireless communication module; the SIP service management module receives the intercom request and forwards the intercom to all other intelligent terminals through the wireless communication module Request to establish SIP session connections for all smart terminals.

The intelligent terminal also includes a position positioning module and a display module, and the display module is not shown in Fig. 1; wherein, the position positioning module is used to locate the geographical position of the intelligent terminal, and transmit the geographical position through the wireless communication module to the display modules in other smart terminals.

The database management module is used to store all user information such as IP network information, power information, and user registration information.

When the whole system is running, the SIP service management module in the networking terminal is initialized to manage the SIP service in the entire network. Other non-networking terminals are connected to the networking terminal through the wireless communication module and realize SIP intercom through the intercom module.

The wireless communication module is divided into networking function and network connection function; when networking for the first time, it is a manual networking, and the selected networking terminal manually turns on the hotspot function of the smart terminal to establish a wireless local area network. The non-networking terminal manually accesses the network. After the connection is successful, it obtains the IP network information of other terminals in the network through broadcasting, and then establishes a TCP connection with other terminals to obtain power information and geographic location information, and transfers the obtained IP network information and power information , The geographic location information is stored in the database management module. When re-networking, after the user monitoring module in the networking terminal reselects the networking terminal, it triggers the networking function of the wireless communication module in the newly selected networking terminal, automatically turns on the wireless hotspot to establish a new network, and other non-networking terminals Automatically start the network connection function in the wireless communication module to access a new network.

The intercom module includes two functions, the cluster intercom function and the friend intercom function, both of which are implemented through the SIP service management module. The user initiates a cluster intercom request, and the SIP service management module in the networking terminal receives the cluster intercom request and forwards it to all other terminals in the network, establishes a SIP session connection with them, and starts the cluster intercom. The communication mode adopted is simplex communication. The user initiates a friend intercom request, and the SIP service management module in the networking terminal receives the request and forwards it to a designated friend, then establishes a SIP session connection with the requested friend, and starts the friend intercom, using duplex communication.

The implementation of the SIP protocol in the intercom module is extended and transplanted on the basis of the open source SIP protocol stack, including the core protocol stack and signaling control. Among them, the core protocol stack is used to analyze and generate datagrams conforming to SIP and its extended protocol format; the signaling control part is used to send and receive state machine control messages and start and end SIP sessions.

The location positioning module starts to locate the geographic location information of the smart terminal after the smart terminal is connected to the network, and regularly updates the location information to other smart terminals in the network. When the user uses the positioning function, it can quickly display the location information of all members in the network on the map. location information.

The following is an implementation of a smart terminal-based trunking intercom system:

Select intelligent terminal A, terminal B, and terminal C loaded with mobile intelligent terminal systems. The terminals all have the function of wireless communication, and all of them are equipped with the trunking intercom system.

First select terminal C to set up a wireless local area network, start the cluster intercom system in the device, and trigger the initialization of the SIP service management module of the system at the same time, generate a SIP service user name and password associated with the IP address of terminal C and register SIP Serve.

Terminal A and terminal B are connected to the wireless local area network formed by terminal C and terminal C to form an ad hoc network. After terminals A and B access the network, the SIP service management module of terminal C will randomly generate two user names and passwords for SIP services. According to the order of network access, associate the two user names and passwords with the IP addresses of A and B accessing the network and register for the SIP service. After successful registration, save the user information in the local database system. Terminals A and B enter the main interface after successful login. The wireless communication modules of A and B obtain the IP addresses of other users in the LAN through broadcasting, and then establish connections with other users to obtain the power status information, geographical location information, and user information of each user. Information is registered and stored in a local database system. Then the user monitoring modules of A and B are initialized and monitor the power information of terminal C.

Terminal A enters the intercom interface as shown in Figure 2. Press and hold the microphone to initiate a group call. Both terminals B and C in the LAN can listen to the voice transmitted from terminal A through the headset. After speaking, put down the microphone button to end the speech. When terminals A, B, and C are locked, press the volume button to initiate a call directly; when terminals B and C receive a call from terminal A in the standby state, they vibrate the device to prompt the user, and at the same time play the received call. Received voice; when terminals B and C receive a call from terminal A when they are in a conversation, the terminal B and C will be prompted with a boost tone and vibration, and the received call will be played after the terminal B and C end the call voice.

Terminal A displays the user names of terminals B and C in the member list in the intercom interface as shown in Figure 2. Click terminal B to enter the one-to-one intercom interface with terminal B, and press the microphone to initiate a call to terminal B alone.

Terminal A selects the positioning function in the menu, and the positions of all members in the LAN (ie, terminal A, terminal B, and terminal C) are displayed on the map.

The flow chart of the user monitoring module is shown in Figure 4. The user monitoring module detects the power information of the current networking device (currently terminal C) in real time. When it detects that the power is lower than the specified threshold, it selects the current network from all user information. Terminal A with the highest battery power is used as a new networking device. At this time, the networking function of the wireless communication module of terminal A is started, and the wireless hotspot of terminal A is turned on to form a new local area network. The SIP service management module of terminal A is activated, and terminal B And terminal C reconnects to the network of terminal A through the network connection function in the wireless communication module according to the previous network connection rules of each terminal, and at the same time updates the IP network information of all devices in the new network, and switches the power monitoring object to terminal A.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concepts and principles of the present invention shall fall within the protection scope of the present invention.

Claims (5)

1. An intelligent terminal cluster intercom system based on SIP is characterized by comprising at least two intelligent terminals, wherein each intelligent terminal comprises a wireless communication module, an SIP service management module, an intercom module, a database management module and a user monitoring module; randomly selecting one intelligent terminal as a networking terminal, and taking other intelligent terminals as non-networking terminals; wherein,

the wireless communication module in the networking terminal is used for starting a wireless hotspot to establish a wireless local area network and receiving connection requests of the wireless communication modules in other intelligent terminals;

the system comprises a networking terminal, an SIP service management module in the networking terminal, a database management module and a database management module, wherein the SIP service management module is used for randomly generating a user name and a password of an SIP service when other intelligent terminals are added into the wireless local area network, associating the user name and the password with an IP address of the intelligent terminal and registering the SIP service, and storing the user name, the password and the IP address in the networking terminal after the registration is successful;

the user monitoring module in the networking terminal is used for monitoring the electric quantity of the current networking terminal in real time, and outputting a detection signal to the user monitoring modules in other non-networking terminals if the electric quantity is lower than a preset minimum electric quantity threshold value;

the user monitoring module in the non-networking terminal is used for outputting the respective monitored electric quantity to the database management module for storage when receiving the detection signal, the user monitoring module in the networking terminal reads the electric quantity in the database management module, selects the intelligent terminal with the most electric quantity as a new networking terminal for re-networking, triggers the SIP service management module of the new networking terminal, and updates the IP addresses, the electric quantity information, the user names and the passwords of all the intelligent terminals in the new network;

the talkback module is used for initiating a talkback request and outputting the talkback request to the SIP service management module in the networking terminal through the wireless communication module; and the SIP service management module receives the talkback request and forwards the talkback request to all other intelligent terminals through the wireless communication module, and SIP session connection of all the intelligent terminals is established.

2. The SIP-based intelligent terminal cluster intercom system according to claim 1, wherein the intelligent terminal further comprises a position locating module and a display module; the position positioning module is used for positioning the geographic position of the intelligent terminal and transmitting the geographic position to the display modules in other intelligent terminals through the wireless communication module.

3. The intelligent terminal cluster intercom system based on SIP according to claim 1, wherein the intercom module realizes the intercom function through an SIP protocol, and the communication mode adopted in cluster intercom is simplex communication; when one intelligent terminal only talkbacks with another intelligent terminal, the adopted communication mode is duplex communication.

4. The SIP-based intelligent terminal cluster intercom system according to claim 1, wherein the SIP protocol implementation in the intercom module is extended and transplanted on the basis of an open source SIP protocol stack, and the SIP-based intelligent terminal cluster intercom system comprises a core protocol stack and a signaling control part.

5. The intelligent terminal cluster intercom system based on SIP of claim 1, wherein the wireless communication module transmits the user information data by using TCP protocol.