Telephone intercommunication method for satellite communication network and ultra-short wave communication network

Abstract

The invention discloses a satellite communication network and ultrashort wave communication network telephone intercommunication method, and relates to the field of wireless emergency communication. User telephone numbers of an ultra-short wave communication network and a satellite communication network are numbered in a unified manner, and protocol interaction and addressing link establishment functions are provided for telephone intercommunication between the two networks through an exchange adaptation module integrated in the satellite communication terminal. An ultra-short wave communication network user calls a satellite communication network user, and a secondary dialing system is adopted; a satellite communication network user calls an ultra-short wave communication network user, and an in-network number search system is adopted. According to the invention, the voice automatic switching between the ultrashort wave communication network and the satellite communication network is realized, the cross-network voice communication process between heterogeneous networks is simplified, the organic fusion of the two networks is promoted, and the advantages of the two networks are complementary.

Description

Technical Field

[0001] The present invention relates to the field of wireless emergency communication, and particularly to a method for telephone interconnection between a satellite communication network and a VHF communication network. Background Art

[0002] In the face of sudden natural disasters or emergencies, especially cross-regional complex disaster accidents, it is easy to cause damage and interruption of basic communication facilities and signal failure of traditional communication equipment. To ensure communication in the disaster area, it is necessary to comprehensively utilize various communication resources for rescue, emergency assistance, and service support. Among them, satellite communication and VHF communication are important communication means. Due to the characteristics of flexible networking, rapid communication, and mobility of VHF radios, they can be equipped with on-site emergency rescue teams in the disaster area for line-of-sight networking communication guarantee. Satellite communication has the advantages of large communication range, long distance, small impact of geographical environment, and fast construction speed. It can quickly establish a satellite communication network from the disaster area site to the rear emergency support agency to achieve stable and reliable long-distance communication.

[0003] In practical applications, each communication means has its limitations. Emergency communication guarantee cannot rely on a single communication means. It is necessary to integrate multiple communication means according to the requirements of emergency communication scenarios and technical characteristics to build a highly reliable, strongly adaptable, and complementary emergency communication system. Currently, various existing communication guarantee means have different technologies and are difficult to achieve effective integration and interconnection. Each network system is mostly independently applied, lacking a communication guarantee system that integrates multiple communication means, makes overall planning, and is highly coordinated, which is not conducive to departmental linkage and unified coordinated application. Summary of the Invention

[0004] In view of this, the present invention proposes a method for telephone interconnection between a satellite communication network and a VHF communication network. When information outside the system needs to be conveyed to the communication system through VHF or satellite, two-way telephone communication between the VHF network and the satellite network can be directly realized through the way of dialing a call. This method can realize automatic voice transfer between heterogeneous networks without manual secondary transfer. Through this method, different communication modes are organically integrated to enable their collaborative application in complex and changeable emergency environments.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A method for telephone interconnection between a satellite communication network and a VHF communication network, which uniformly numbers the user telephone numbers of the VHF communication network and the satellite communication network, interconnects any one radio station in each VHF communication network with one satellite communication terminal in the satellite communication network. An exchange adaptation module is integrated inside the satellite communication terminal, and the exchange adaptation module is used to provide protocol interaction and addressing and link establishment functions for telephone interconnection between the VHF communication network and the satellite communication network;

[0007] When a user in the VHF communication network calls a user in the satellite communication network, a secondary dialing system is adopted;

[0008] When a user in the satellite communication network calls a user in the VHF communication network, a network-internal number search system is adopted.

[0009] Furthermore, when a user in the VHF communication network calls a user in the satellite communication network, a secondary dialing system is adopted; specifically, it includes the following steps:

[0010] Step a1, the VHF radio station A in the VHF communication network acts as the calling user and performs voice dialing. First, it calls the VHF radio station B in the VHF communication network that is connected to the satellite communication network. After receiving the voice signaling, the VHF radio station B distinguishes according to the user telephone number therein. If it is a satellite communication number, it transmits the voice signaling to the satellite communication terminal C connected thereto. The switching and adaptation module in the satellite communication terminal C converts the voice signaling on the VHF side into the voice signaling on the satellite communication side for reception;

[0011] Step a2, the satellite communication terminal C determines the destination satellite communication terminal D according to the called user number in the voice signaling and applies for a satellite channel voice transmission time slot between the satellite communication terminal C and the satellite communication terminal D;

[0012] Step a3, after the time slot application is successful, the satellite communication terminal C packs the voice signaling and sends it to the destination satellite communication terminal D. The satellite communication terminal D unpacks the voice signaling and sends it to the local telephone set to ring;

[0013] Step a4, the satellite communication terminal D determines the reverse satellite communication destination satellite communication terminal C, packs it according to the frame format, and applies for a reverse satellite channel voice transmission time slot between the satellite communication terminal D and the satellite communication terminal C;

[0014] Step a5, when the time slot application is successful, the satellite communication terminal D goes off-hook, and the VHF radio station A goes off-hook after hearing the ringback tone;

[0015] Step a6, the VHF radio station A and the satellite communication terminal D communicate. Both parties pack the service data according to the frame format and send it to the other party. The other party unpacks the data after receiving it;

[0016] Step a7, after the call ends, the VHF radio station A and the satellite communication terminal D release the transmission time slots respectively, and both telephone sets hang up.

[0017] Furthermore, when a user in the satellite communication network calls a user in the VHF communication network, a network-internal number search system is adopted; specifically, it includes the following steps:

[0018] Step b1, the satellite communication terminal D in the satellite communication network acts as the calling user and starts the network-internal number search using the broadcast channel of the satellite communication network;

[0019] Step b2: The satellite communication terminal that receives the number search within the satellite communication network forwards the search signaling to the VHF radio B of the VHF communication network connected thereto through the local switching and adaptation module. If VHF radio B finds user A called by satellite communication terminal D in the VHF communication network, it conducts a search response through the connected satellite communication terminal C; if user A called by satellite communication terminal D does not exist, no response is made.

[0020] Step b3: If satellite communication terminal C conducts a search response, satellite communication terminal D applies for a voice transmission time slot of the satellite communication channel between satellite communication terminal D and satellite communication terminal C according to the response terminal address.

[0021] Step b4: After the time slot application is successful, satellite communication terminal D packs the voice signaling and sends it to the destination satellite communication terminal C. Satellite communication terminal C unpacks the voice signaling, converts the voice signaling on the satellite side to the voice signaling on the VHF side through the switching and adaptation module, and then transmits it to the connected VHF radio B. VHF radio B sends it to VHF radio A for ringing.

[0022] Step b5: Satellite communication terminal C determines the reverse satellite communication destination satellite communication terminal D, packs it according to the frame format, and applies for a reverse voice transmission time slot of the satellite channel between satellite communication terminal C and satellite communication terminal D.

[0023] Step b6: After the time slot application is successful, VHF radio A goes off-hook. After satellite communication terminal D hears the ringback tone, the called party goes off-hook.

[0024] Step b7: VHF radio A and satellite communication terminal D conduct a call. Both parties pack the service data according to the frame format and send it to the other party. The other party unpacks the data after receiving it.

[0025] Step b8: After the call ends, VHF radio A and satellite communication terminal D release the transmission time slots respectively, and both ends of the telephone set hang up.

[0026] Due to the adoption of the above technical solution, the beneficial effects of the present invention compared with the prior art are as follows:

[0027] 1. Under the communication mode of the present invention, external information can be directly transmitted across network systems to the system interior, simplifying the voice call process, and more effectively combining the satellite communication network and the VHF communication network to form a rapid, accurate, and reliable collaborative communication system.

[0028] 2. Compared with the traditional single emergency communication guarantee method, the present invention has the advantages of being fast, convenient, highly efficient and integrated, having strong operability, and relatively mature technology, and has a certain promoting effect on improving the emergency communication guarantee efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a network connection diagram of a method for telephone intercommunication between a satellite communication network and a VHF communication network in an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the process for user A in the VHF communication network to call user D in the satellite communication network in an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the process for user D in the satellite communication network to call user A in the VHF communication network in an embodiment of the present invention. Detailed implementation manners

[0032] The following further describes the content of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0033] A method for telephone intercommunication between a satellite communication network and a VHF communication network, as Figure 2 , Figure 3 shown, the call process is divided into two types according to the initiating user, namely: a user in the VHF communication network calls a user in the satellite communication network and a user in the satellite communication network calls a user in the VHF communication network.

[0034] (1) User A in the VHF communication network calls user D in the satellite communication network:

[0035] As Figure 2 shown, it includes the following steps:

[0036] Step 1, the radio station A in the VHF communication network acts as the calling user and performs voice dialing. First, it calls the VHF radio station B connected to the satellite communication network in the network. After receiving the dial tone, the VHF radio station B differentiates according to the user number. If it is a satellite communication number, the switching and adaptation module converts the voice signaling on the VHF side into the voice signaling on the satellite communication side and sends it to the local satellite terminal C;

[0037] The switching and adaptation module can solve the problem of incompatibility between the VHF radio station and the satellite communication terminal interface, enabling the two devices to work together. When the voice coding of the VHF communication network user is different from the satellite communication voice coding, the switching and adaptation module completes the voice coding conversion. The switching and adaptation module can also perform addressing according to the destination address and establish a routing table between the sending user and the receiving user.

[0038] The VHF radio station and the satellite communication terminal are connected through a control channel and a voice channel. The control channel is used for controlling signaling transmission, number transfer, etc.; the voice channel is used for two-way voice communication.

[0039] The VHF radio station B calls the satellite terminal C using the secondary dialing method. If the user number is a satellite communication number, continue dialing to connect to the satellite terminal C; if the user number is not a satellite communication number, terminate the operation.

[0040] If the VHF radio B connected to the satellite communication network is the calling user, the voice signaling on the VHF side is directly transmitted to the satellite terminal C, and the switching and adaptation module in the satellite terminal C converts it into the voice signaling reception on the satellite communication side;

[0041] Step 2, the satellite communication terminal C determines the destination according to the called user number, and applies to the network management center for the transmission time slot of the satellite channel;

[0042] The satellite network management center coordinates the normal operation of each station, including the access and address assignment of satellite communication terminals, etc., to ensure the normal operation of the satellite communication network and allocate the transmission time slot for the terminal applying for the satellite communication channel.

[0043] If the satellite communication terminal C is the destination, the satellite terminal C directly conducts telephone intercommunication with the VHF side through the switching and adaptation module;

[0044] Step 3, after the time slot application is successful, the satellite communication terminal C packs the service data and sends it to the destination satellite communication terminal D. The satellite communication terminal D unpacks the service data and sends it to the local telephone set to ring;

[0045] Step 4, the satellite communication terminal D determines the sending destination station, packs it according to the frame format, and applies for the sending time slot;

[0046] Step 5, after the time slot application is successful, the satellite communication terminal D goes off-hook, and the VHF radio A goes off-hook after hearing the ringback tone;

[0047] Step 6, the VHF radio A and the satellite communication terminal D conduct a call, and both parties pack the service data according to the frame format and send it to the other party. The other party unpacks the data after receiving it;

[0048] Step 7, after the call ends, the VHF radio A and the satellite communication terminal D release the sending time slot respectively, and both telephone sets hang up.

[0049] (2) Satellite communication network user D calls VHF communication network user A:

[0050] As Figure 3 shown, the present invention includes the following steps:

[0051] Step 1, the satellite communication network user D uses the broadcast channel of the satellite communication network to start the in-network number search;

[0052] The satellite communication terminal C conducts a full search within its coverage area through the broadcast channel, searches for all neighboring nodes, and determines whether there is a destination node. If the destination node is not found, it searches for first-level, second-level, and third-level relay nodes that are connected to the destination node level by level until a path connected to the destination node is found. If not, the search fails. If multiple links connected to the destination node with the same total number of relay nodes are found during the search, a link with a smaller cost is selected as the optimal path.

[0053] If the VHF communication network connected to the satellite communication terminal D includes the VHF communication network user A, the satellite terminal D directly conducts telephone intercommunication with the VHF side through the switching adaptation module.

[0054] Step 2: The satellite communication terminal that receives the number search within the network forwards the search signaling to the local radio station through the local switching adaptation module. If the local radio station has the user A called by the satellite communication network, it conducts a search response through the connected satellite communication terminal C; if the local radio station does not have the user A called by the satellite communication network, it does not respond.

[0055] Step 3: After the satellite communication terminal C conducts a search response, it applies for a satellite communication channel from the network management center according to the address of the responding terminal.

[0056] Step 4: After the time slot application is successful, the satellite communication terminal D packs the service data and sends it to the destination station C. The satellite communication terminal C unpacks the service data and sends it to the VHF radio station A for ringing.

[0057] Step 5: The VHF radio station A determines the sending destination station, packs it according to the frame format, and applies for a sending time slot.

[0058] Step 6: After the time slot application is successful, the VHF radio station A goes off-hook. After the satellite communication terminal D hears the ringback tone, the called party goes off-hook.

[0059] Step 7: The VHF radio station A and the satellite communication terminal D conduct a call. Both parties pack the service data according to the frame format and send it to the other party. After the other party receives the data, it unpacks it.

[0060] Step 8: After the call ends, the VHF radio station A and the satellite communication terminal D release the sending time slots respectively, and both telephone sets hang up.

[0061] Specifically, the satellite communication terminal internally integrates and designs a switching adaptation module, which is interconnected with the voice port and control port of the VHF radio station. The connection relationship is as Figure 1 shown. The user telephone numbers of the VHF communication network and the satellite communication network are uniformly numbered. One radio station is selected from each VHF communication network and one satellite communication terminal in the satellite communication network are interconnected. The switching adaptation module integrated inside the satellite communication terminal provides protocol interaction and addressing and link establishment functions for telephone intercommunication between these two networks.

[0062] Those skilled in the art will realize that the described embodiments are provided to assist the reader in understanding the principles of the present invention, and it should be understood that the protection scope of the present invention is not limited to the described embodiments. For those skilled in the art, various changes and modifications can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A method for telephone intercommunication between a satellite communication network and a VHF communication network, characterized in that, Uniformly number the user telephone numbers of the ultra-short wave communication network and the satellite communication network. Select a radio station in each ultra-short wave communication network and a satellite communication terminal in the satellite communication network for interconnection. The satellite communication terminal is integrated with a switching adaptation module, and the switching adaptation module is used to provide protocol interaction and addressing and link establishment functions for telephone intercommunication between the ultra-short wave communication network and the satellite communication network; When a user in the ultra-short wave communication network calls a user in the satellite communication network, a secondary dialing system is adopted; When a user in the satellite communication network calls a user in the ultra-short wave communication network, an in-network number search system is adopted.

2. The method for telephone intercommunication between a satellite communication network and a VHF communication network according to claim 1, wherein When a user in the ultra-short wave communication network calls a user in the satellite communication network, a secondary dialing system is adopted; specifically including the following steps: Step a1, the ultra-short wave radio station A in the ultra-short wave communication network acts as the calling user and performs voice dialing. First, it calls the ultra-short wave radio station B in the ultra-short wave communication network connected to the satellite communication network. After receiving the voice signaling, the ultra-short wave radio station B distinguishes according to the user telephone number therein. If it is a satellite communication number, it transmits the voice signaling to the satellite communication terminal C connected thereto. The switching adaptation module in the satellite communication terminal C converts the voice signaling on the ultra-short wave side into the voice signaling on the satellite communication side for reception; Step a2, the satellite communication terminal C determines the destination satellite communication terminal D according to the called user number in the voice signaling and applies for a satellite channel voice transmission time slot between the satellite communication terminal C and the satellite communication terminal D; Step a3, after the time slot application is successful, the satellite communication terminal C packs the voice signaling and sends it to the destination satellite communication terminal D. The satellite communication terminal D unpacks the voice signaling and sends it to the local telephone set for ringing; Step a4, the satellite communication terminal D determines the reverse satellite communication destination satellite communication terminal C, packs it according to the frame format, and applies for a satellite channel reverse voice transmission time slot between the satellite communication terminal D and the satellite communication terminal C; Step a5, when the time slot application is successful, the satellite communication terminal D goes off-hook, and the ultra-short wave radio station A hears the ringback tone and the called party goes off-hook; Step a6, the ultra-short wave radio station A and the satellite communication terminal D communicate. Both parties pack the service data according to the frame format and send it to the other party. The other party unpacks the data after receiving it; Step a7, after the call ends, the ultra-short wave radio station A and the satellite communication terminal D respectively release the transmission time slot, and the two telephone sets hang up.

3. A method for telephone intercommunication between a satellite communication network and a VHF communication network according to claim 1, characterized in that, When a user in the satellite communication network calls a user in the ultra-short wave communication network, an in-network number search system is adopted; specifically including the following steps: Step b1, the satellite communication terminal D in the satellite communication network acts as the calling user and starts in-network number search using the broadcast channel of the satellite communication network; Step b2, the satellite communication terminals in the satellite communication network that receive the number search forward the search signaling to the ultra-short wave radio station B in the ultra-short wave communication network connected thereto through the local switching adaptation module. If the ultra-short wave radio station B searches for the user A called by the satellite communication terminal D in the ultra-short wave communication network, it performs a search response through the satellite communication terminal C connected thereto; if the user A called by the satellite communication terminal D does not exist, no response is made; Step b3, if the satellite communication terminal C performs a search response, the satellite communication terminal D applies for a satellite communication channel voice transmission time slot between the satellite communication terminal D and the satellite communication terminal C according to the response terminal address; Step b4: After the successful application for a time slot, VSAT terminal D packs the voice signaling and sends it to the destination VSAT terminal C. VSAT terminal C unpacks the voice signaling and converts the voice signaling on the VSAT side into the voice signaling on the VHF side through the switching and adaptation module, and then transmits it to the connected VHF radio B. VHF radio B sends it to VHF radio A for ringing; Step b5: VSAT terminal C determines the reverse VSAT destination VSAT terminal D, packs it according to the frame format, and applies for the reverse voice transmission time slot of the satellite channel between VSAT terminal C and VSAT terminal D; Step b6: After the successful application for a time slot, VHF radio A goes off-hook. After VSAT terminal D hears the ringback tone, the called party goes off-hook; Step b7: VHF radio A and VSAT terminal D conduct a call. Both parties pack the service data according to the frame format and send it to the other party. After the other party receives the data, it unpacks it; Step b8: After the call ends, VHF radio A and VSAT terminal D release the transmission time slots respectively, and both ends of the telephone set hang up.

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