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Timed synchronizing method in general block radio business

A general packet radio, timing synchronization technology, applied in the directions of synchronization devices, wireless communication, synchronization devices, etc., can solve problems such as increased cost, instability, and inability to achieve system performance, and achieve the effect of improving stability and ensuring synchronization

Inactive Publication Date: 2008-10-15
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to propose a method to ensure the synchronization of the downlink wireless block number and the multiframe number of the PCU unit and the BTS, enhance system stability, and effectively avoid the method of timing synchronization in the general packet wireless service that increases the cost, to overcome the existing In the existing technology, it is impossible to realize the complete synchronization between the PCU unit and the BTS downlink wireless block number and multiframe number, resulting in unstable system performance, and the cost increase and system instability caused by additional equipment.

Method used

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  • Timed synchronizing method in general block radio business
  • Timed synchronizing method in general block radio business
  • Timed synchronizing method in general block radio business

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Embodiment Construction

[0027] figure 1 is a flowchart of the method of the present invention. It should be noted that, because the period of the PCU frame is 20 milliseconds, if there is a judgment on frame reception and transmission in each step in this method, the judgment standard can generally be considered as: whether 20 milliseconds have passed since the last transmission or reception, and if 20 milliseconds Milliseconds, the judgment is true, otherwise, the judgment is false. First, the system is powered on and starts to run, and the PCU unit generates a wireless block number (between 0 and 11 as required by the GSM protocol), and in the downlink PCU frame (the PCU frame is a code conversion and rate adaptation unit frame in GSM, namely TRAU frame - improvement of Transcoder and Rate Adaptation Unit) to the BTS, then the PCU unit adds 1 to its own wireless block number, performs modulo 12 calculation, saves the result, and prepares for the next use. When the BTS receives the entire PCU fra...

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Abstract

This invention puts forwards a timing synchronous method for general grouping radio service including 1.PUC unit generates self radio block number at start to be sent to BTS via down-stream PCU frame 2, PCU calcualtes the next radio block number 3. judging if BTS has received the PCU frame, if so, to step 4, if not, proceeding to step 7. 4. BTS solves radio block number in PCU frame 5. calculating present BTS radio block number 6. calculating difference between the two block numbers 7. judging if should send, step 6 calculated difference to PCU if not, continue to step 8, or to step 9, 8). Process other tasks then turne to step 3 9. the difference calcualted in step 6 is sent to PCU unit, in up-line PCU frame which calculate the block number and return to steep 2.

Description

technical field [0001] The present invention relates to general packet radio service (hereinafter referred to as GPRS, GeneralPacket Radio Service) in the field of mobile communication, specifically, relate to a kind of in GPRS and realize packet control unit (hereinafter referred to as PCU unit, Packet Control Unit, same below) and base station A method for synchronizing frame numbers and wireless block numbers between transceiver stations BTS (BaseTransceiver Station). Background technique [0002] At present, in the field of mobile communication, the GPRS packet switching mobile data network is being used more and more widely, and more and more shows its ability and superiority to meet the market demand. Electricity is gradually replacing the existing GSM system. And become the mainstream of mobile communication. The GPRS packet switching mobile data network (hereinafter referred to as GPRS) is based on the GSM mobile phone network, adding two network functional entities...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/20H04L12/54H04L7/00H04B7/26H04W56/00
Inventor 邵显成杨刚王成毅
Owner ZTE CORP
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