Method and device for realizing group call service of satellite mobile communication

A technology of satellite mobile communication and an implementation method, which is applied in the field of realizing group call service of satellite mobile communication, can solve the problems of inability to realize the group call service of trunking, the technical solution does not support the trunking function, etc. The effect of large coverage and reduced complexity

Inactive Publication Date: 2017-11-03
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent application can realize the one-hop forwarding of communication between satellite terminals, and the communication process does not require the participation of the ground station, but its technical solution does not support the trunking function and cannot realize the trunking group call service

Method used

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  • Method and device for realizing group call service of satellite mobile communication
  • Method and device for realizing group call service of satellite mobile communication
  • Method and device for realizing group call service of satellite mobile communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Group call between satellite terminals

[0024] The specific embodiment of the present invention adopts such as figure 1 The basic satellite communication system shown is composed of satellites, satellite terminals, ground gateways, ground core networks, ground access networks, and ground access network terminals. The ground gateway is the ground communication network interface, and the communication from the satellite terminal to the ground network (such as PSTN, GSM, etc.) is relayed by the ground gateway. The communication between the satellite terminals is exchanged on the satellite by the satellite mobile communication device. The following describes the group call process of the satellite terminal in this embodiment.

[0025] Assuming that the existing terminal a, terminal b, and terminal c are all satellite terminals and belong to the same group, and terminal a initiates a group call request, the group call process of the satellite terminal is as follow...

Embodiment 2

[0032] Embodiment 2: The satellite terminal and the terrestrial access network terminal make a group call conversation.

[0033] This embodiment still uses figure 1 In the satellite communication system shown, the ground access network belongs to the ground network, but the ground access network terminal and the satellite terminal can be compiled into a unified talk group to realize a unified group call. The following describes the group call conversation process including the satellite terminal and the ground access network terminal of this embodiment.

[0034] It is assumed that the existing terminals a and b are satellite terminals, and the terminal c is a ground terminal, and all terminals belong to the same group. If terminal a initiates a group call request, the group call process of the satellite terminal is shown in image 3 , The specific steps are:

[0035] Step 1: After the air interface link is established, the satellite terminal a initiates a call request and sends a gr...

Embodiment 3

[0043] Embodiment 3: Satellite mobile communication device

[0044] This embodiment adopts a satellite mobile communication device, and its structure is shown in Figure 4 , Including uplink radio frequency module, channel extraction module, demodulation module, decoding module, on-board switching module, encoding module, modulation module, channel merging module, downlink radio frequency module. Among them, the on-board switching module includes a signaling analysis unit, a group call service unit, and a media switching unit.

[0045] All the signaling passes through the signaling analysis unit first, and then the service distribution judgment is performed. If the signaling is group call signaling, the signaling is forwarded to the group call service unit.

[0046] The group call service unit is responsible for the logical control, signaling conversion and media control of the group call service. The group call service unit analyzes the signaling forwarded by the signaling analysi...

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Abstract

The present invention proposes a method for realizing a satellite mobile communication group call service. The method includes the following steps: a. The satellite mobile communication device analyzes the terminal signaling to obtain a group call request message; b. The device analyzes the group call request message to obtain a group call request message. number; c, the device generates a group call paging message according to the group call number; d, the device calculates the group call paging area according to the location information of the calling terminal, and sends the group call paging message; e, the called satellite terminal receives Group call paging message, analyze the group call number, judge whether it is the paging of this group, if so, then access the service channel to receive the group call service frame; f, the device broadcasts to the called satellite terminal on the service channel Group call voice media. The invention also provides a satellite mobile communication device. The method and device proposed by the invention can support the group call service of the conversation between the satellite terminals, the communication process does not require the participation of the ground station, and can also support the unified group call of the satellite terminal and the ground access network terminal.

Description

Technical field [0001] The present invention relates to the field of satellite mobile communication, in particular to a method and device for realizing satellite mobile communication group call service. Background technique [0002] Satellite mobile communication is a way of communicating by means of satellite links. Users can move freely within the coverage of satellite beams and maintain communication with ground communication system and dedicated system users or other satellite mobile users. Compared with other communication methods, satellite mobile communication has the advantages of large coverage area, long communication distance, flexible communication, and stable and reliable lines. The satellite mobile communication system is suitable for both civil communication and private network communication. [0003] The trunking communication system is a dedicated mobile communication system. In addition to the personal mobile communication services that the public mobile communic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W4/06
Inventor 宋永亮曹华伟辛朝磊
Owner BEIJING XINWEI TELECOM TECH
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