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Communication channel dynamic reserved allocation method suitable for low orbit satellite network

A technology of low-orbit satellites and distribution methods, which is applied in the field of satellite communications and can solve problems such as call request blocking

Inactive Publication Date: 2013-04-10
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

If the calling user's request cannot be fulfilled, the call request will be blocked

Method used

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  • Communication channel dynamic reserved allocation method suitable for low orbit satellite network
  • Communication channel dynamic reserved allocation method suitable for low orbit satellite network
  • Communication channel dynamic reserved allocation method suitable for low orbit satellite network

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Embodiment Construction

[0048] For the convenience of description, we assume the following application examples, such as figure 1 Shown: The system includes low-orbit satellites (using the Iridium system) and several ground terminals, each of which is controlled by a satellite ground control center, and there are several beam cells in the satellite footprint within the coverage of each low-orbit satellite .

[0049] When a user in a satellite beam cell applies for a satellite channel, the following steps are required:

[0050] 1. Channel reservation control process

[0051] Step 1: At the beginning of the control period, if the cell has no predecessor cell, a fixed number of channels is reserved according to the fixed channel reservation algorithm, and the number of channels reserved for real-time (RT) session services is N 0 , the number of reserved channels for RT stream switching service is N 1 (N 0 , N 1 set in advance). If the current requirements are not met, go to step 2.

[0052] Step ...

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Abstract

The invention discloses a communication channel dynamic reserved allocation method suitable for a low orbit satellite network, changing-over blocking rate and new call out blocking rate can be effectively reduced, service quality of all businesses can be guaranteed, and channel utilization rate can be improved. The communication channel dynamic reserved allocation method suitable for the low orbit satellite network solves the problems that frequent changing-over of a ground mobile terminal caused by high-velocity motion of a satellite in the low orbit in a satellite communication network environment with the satellite in the low orbit as an access way, satellite resources are limited, and high real-time requirements of a mixed multimedia business and the like. According to a channel allocation strategy, priority is divided by starting from the priority of a changing-over business and combining with quality of service ( QoS) characteristics of analyzing mixed multi-service, specific communication channels are allocated to various types, the authority limits of seizing a low priority business are endowed to a high priority business, and therefore the purpose of increasing the channel utilization rate is achieved, and pressure caused by high-capacity user access to the communication channel is balanced.

Description

technical field [0001] The invention relates to a channel dynamic reservation allocation method for a satellite network communication system, in particular to a channel dynamic reservation allocation strategy suitable for mixed multi-service applications in a low-orbit satellite mobile communication network structure, and belongs to the technical field of satellite communication . Background technique [0002] The communication of the terrestrial cellular mobile communication system is inseparable from the ground base station, and its communication range is limited by ground factors. With the continuous advancement of science and technology and the rapid development of communication technology, people have put forward higher requirements for communication quality and communication coverage. The development of satellite communications has made it possible to communicate seamlessly across the globe. Since satellites were used to provide wireless communication services in the...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04W28/26H04W72/12H04L12/861
Inventor 叶晓国潘勇孙力娟肖甫周剑王汝传郭剑韩崇
Owner NANJING UNIV OF POSTS & TELECOMM
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