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Vocoder system using multiple port routing to communicate and its business frame exchanging method

A multi-port and service frame technology, applied in the field of vocoder system, can solve the problems of many times of service frame forwarding, complex structure, transmission data error, etc., to reduce the complexity of software and hardware, avoid access conflicts, and unify the system architecture Effect

Inactive Publication Date: 2008-09-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this patent, the system uses the first processor and the second processor, adopts the two-level forwarding mode, the system coordination work is difficult, and the structure is complicated; at the same time, the number of service frame forwarding is large, which increases the transmission delay of the system. When the business frame transmission of the digital signal processor adopts the FIFO structure, it has a status register and a control FIFO register, which increases the complexity of communication with the digital signal processor; in addition, the access of the dual-port memory is prone to conflicts, resulting in the transmission of data mistake

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  • Vocoder system using multiple port routing to communicate and its business frame exchanging method
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  • Vocoder system using multiple port routing to communicate and its business frame exchanging method

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing, the implementation of technical scheme is described in further detail:

[0019] Such as figure 1 As shown, the vocoder system described in patent US5,724,610 includes a pair of first processor 102 and second processor 106, a selector / vocoder 105, a direct memory access controller 104, a dual-port memory 103, and a mobile The interface of the switching center 108—the E1 interface 107, and two clock receiving units 101 and 109. It can be seen that the system uses three, which increases the complexity of the system work and easily causes access conflicts.

[0020] In order to solve the deficiencies in the prior art, the present invention proposes two kinds of vocoder systems, respectively as Figure 2.1 and Figure 2.2 shown. The hardware configuration of these two vocoders is similar, including main control CPU, clock receiving units 1 and 2, multi-port routing communication unit, n digital signal processors (DSP) and E1...

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Abstract

This invention discloses a vocoder system with multiinterface route communication and its service frame exchange method. A host control CPU used in receiving service frame of the base station writes in the multiinterfce route communication unit and sends its service frame to the base station which receives global positioning system synchronous clock from a clock receiving units and is used to store service frame; n number of digital signal processors (DSP) receive and send the service frame according to the interrupted signals of to receive and send service frame and receive synchronous clock of global positioning system from; EI interface connecting with the mobile exchange center; clock receiving unit and clock receiving unit extracting EL interface.

Description

technical field [0001] The invention relates to a vocoder system, in particular to a vocoder system using multi-port routing communication and a method for exchanging service frames. Background technique [0002] The vocoder system provides conversion between 64KBPS (Bit Per Second) PCM code (Pulse Code Modulation) and base station voice signals, that is, voice coding and decoding. Voice coding and decoding are mainly completed by a digital signal processor (Digital Signal Processor), and a main control CPU (Central Processing Unit) is required to manage the vocoder and control the transmission of service frames. In an actual system, a digital signal processor can implement multiple vocoder units through time-division multiplexing, which also complicates management and business frame transmission. In U.S. Patent No. 5,724,610, a vocoder system and method are provided. The system includes: a pair of first processors, which control traffic frames by selecting a channel betwee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/20H04Q11/04H04B7/26H04L7/00
Inventor 肖荣建张诗壮王立军辛勤夏红兵马文光何伟
Owner ZTE CORP