Frame synchronization method based on burst frame in tdma system

A burst frame and frame synchronization technology, applied in the direction of synchronization devices, time division multiplexing systems, electrical components, etc., can solve the problems of unfavorable late entry, forced demolition, unfavorable wake-up and synchronization, etc., to achieve convenient identification and processing, and extended Total duration, reliable effect of transmission

Active Publication Date: 2015-09-30
SHENZHEN TELETONE INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the process of voice transmission, it is not conducive to quickly realize special functions such as late entry and forced demolition, and it is also not conducive to fast wake-up and synchronization for late-entry users

Method used

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  • Frame synchronization method based on burst frame in tdma system
  • Frame synchronization method based on burst frame in tdma system
  • Frame synchronization method based on burst frame in tdma system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] The frame synchronization method of the present embodiment includes the following steps:

[0027] 1) The transmitting end transmits voice to the receiving end with a superframe as the basic unit, and the superframe is composed of eight burst subframes;

[0028] 2) Insert a frame synchronization word FS into the payload area of ​​each burst subframe, and there is a channel-associated signaling field CCF on both sides of the frame synchronization word FS;

[0029] 3) The transmitting end and the receiving end obtain the frame synchronization signal through the frame synchronization word FS of the burst subframe, and judge the time slot type, channel direction and channel state according to the CCF of the channel-associated signaling field.

[0030] Such as figure 1 As shown, the frame synchronization word FS described in step 2) is the voice frame synchronization word FS1, which is located in the center of the subframe and occupies 48 bits; the voice frame synchronizatio...

Embodiment 2

[0039] The main features of this embodiment are: in step 1), the transmitting end uses the superframe as the basic unit to transmit data signals to the receiving end, the frame synchronization word FS is the data frame synchronization word FS2, and the two payload areas are used to transmit data (Data ), since the frame synchronization word is the data frame synchronization word FS2, the channel-associated signaling CCF only needs to judge the time slot type, channel direction and channel state.

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Abstract

The invention discloses a frame synchronization method based on bursting frames of a TDMA (Time Division Multiple Access) system. The frame synchronization method comprises the following steps: 1) a transmitting end transmits voice or data to a receiving end by adopting a superframe as a basic unit which consists of a plurality of burst subframes; 2) a frame synchronization word FS is inserted into an effective load area of each burst subframe, the two sides of the frame synchronization word FS are respectively provided with a channel associated signaling domain CCF; and 3) the transmitting end and the receiving end acquire frame synchronization signals by the frame synchronization words FS of the burst subframes, and simultaneously judging the time slot type, the channel direction and the channel state according to the channel associated signaling domain CCF. The frame synchronization method disclosed by the invention has the advantages that each burst subframe is inserted with the frame synchronization word FS and the channel associated signaling domains CCF, so that not only can the frame synchronization be obtained in shorter time, but also the receiving end in a sleeping state can be awaken in shorter time, the total time length is delayed, and the transmission is more reliable. The frame synchronization method also can be used for finishing the functions of late entering and forced releasing and the like, obtaining indications of control and recognition information so as to be convenient for better recognition and processing of the receiving end for the received information.

Description

technical field [0001] The invention relates to a frame synchronization method, in particular to a frame synchronization method based on TDMA system burst frame. It belongs to the technical field of wireless communication. Background technique [0002] With the development of wireless control technology and services, more and more functions are required by wireless terminal equipment. In various wireless communication systems, TDMA (Time Division Multiple Access, Time Division Multiple Access) systems are usually used. Time Division Multiple Access refers to dividing time into periodic frames (Frame), and each frame is divided into several time slots. Signals are sent to the base station. Under the conditions of timing and synchronization, the base station can receive the signals of each mobile terminal in each time slot without interference. At the same time, the signals sent by the base station to multiple mobile terminals are arranged in sequence for transmission in pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06H04W56/00
Inventor 俞聿光张明韦忠于林胜
Owner SHENZHEN TELETONE INFORMATION TECH
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