Method for realizing CSN.1 protocol processor in satellite communication system

A technology for satellite communication systems and protocol processors, applied in transmission systems, electrical components, etc., can solve problems such as inflexibility and rigidity, and achieve fast and effective processing, improved processing capabilities, and strong capabilities

Active Publication Date: 2014-07-23
NANJING PANDA ELECTRONICS +1
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Problems solved by technology

In contrast, CSN.1 has the ability to flexibly process bit streams, while

Method used

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  • Method for realizing CSN.1 protocol processor in satellite communication system
  • Method for realizing CSN.1 protocol processor in satellite communication system
  • Method for realizing CSN.1 protocol processor in satellite communication system

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[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] like figure 1 As shown, the implementation method of the CSN.1 protocol processor in the satellite communication system includes a CSN description (CSN_DESCR), a message function library, a decoding process, a message structure, and an encoding process. The CSN_DESCR field is a data structure recognizable by the CSN.1 codec system. According to the message template CSN_DESCR structure, the message function library provides several M_operation functions under the CSN.1 syntax rules, as well as interface functions with the RRC and RLC / MAC layers. The decoding process accepts the bit stream to be decoded sent by the RRC and RLC / MAC layers, and automatically calls the CSN_DESCR field in the message function library and the M_operation function related to decoding for decoding. Further, in the decoding process, in addition to calling the relevant functions of CSN c...

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Abstract

The invention provides a method for realizing a CSN.1 protocol processor in a satellite communication system. According to the method, decoding and coding are conducted by means of a CSN.1 description file, a message function library and a message structural body; a bit stream to be decoded sent by an RRC layer or an RLC/MAC layer is received during decoding; the message structural body calls an M-operating function relevant to decoding used during decoding and conducts grammatical transformation on the decoded bit stream according to the CSN.1 grammatical rule to obtain a structural body under the C language through compiling, and then transforms the user-defined structural body into a CSN structure according to the M-operating function provided in the message function library; the CSN structure obtained through message structural body transformation is received during coding, coding is conducted by calling the CSN-DESCR field and an M-operating function relevant to coding automatically, the CSN structure is transformed into a structure capable of identified by a CSN.1 system, and finally the coded bit stream is transmitted and fed back to the RRC layer or the RLC/MAC layer. By the adoption of the method, the working efficiency of the whole system is improved greatly.

Description

technical field [0001] The invention relates to a realization method of a CSN.1 protocol processor in a satellite communication system, which belongs to a technical realization method in the satellite communication system. Background technique [0002] In the prior art, there is only an introduction to related technologies of the ASN.1 communication protocol, and there is no definition for the CSN.1 codec in the GMR-13G terminal system. Although their acronyms are similar, CSN.1 and ASN.1 are fundamentally different. ASN.1 defines an abstract data structure, while CSN.1 defines the bit level in the coded stream. In contrast, CSN.1 has the ability to flexibly process bit streams, while ASN.1 is relatively rigid and cannot be flexible when encountering problems. Therefore, compared with the ASN.1 codec, the CSN.1 codec is more flexible in application, and because it can be changed freely, the development work becomes relatively simple. Contents of the invention [0003] P...

Claims

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Application Information

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IPC IPC(8): H04L29/06
Inventor 王鑫丁亚南姜雯吴佟李智深
Owner NANJING PANDA ELECTRONICS
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