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Transmission method for high speed grouping busihess data based on TDD

A business data, high-speed packet technology, applied in the direction of transmission modification based on link quality, digital transmission system, transmission system, etc., can solve the problems of increased channel difference, high-speed packet data service transmission efficiency and spectrum utilization rate reduction, etc. Achieve the effects of reducing operating costs, improving performance and system spectrum efficiency, and optimizing efficiency

Inactive Publication Date: 2004-01-07
HUAWEI TECH CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

Due to the rapid change of the wireless fading channel, the increase of delay means that the difference between the two channels also becomes larger, resulting in the reduction of high-speed packet data service transmission efficiency and spectrum utilization

Method used

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  • Transmission method for high speed grouping busihess data based on TDD
  • Transmission method for high speed grouping busihess data based on TDD
  • Transmission method for high speed grouping busihess data based on TDD

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] figure 1 is a flowchart of the method of the present invention, figure 1 The frame structure reference used by the method Figure 5 . figure 1 The method uses a time frame as a unit to transmit uplink and downlink high-speed packet data services in a time-division manner. Firstly, in step 1, the UE performs downlink channel measurement. This step can be implemented by performing downlink channel estimation according to the downlink common pilot or downlink synchronization code sent by the base station. Assuming that the measurement of the downlink channel is completed by the UE in the previous time frame, the UE proceeds to step 2. Figure 5 The first time slot of the shown current time frame, that is, the TS0 time slot, reports to the base station the modulation and coding mode data request (DRC, DATA Request Channel) signaling used to send dat...

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Abstract

This invention discloses a transmission method for a high speed packet service data based on time-sharing duplex in which, UE tests the downstream channel at the last time frame and UE reports to the base base station the applied modulation DRC signaling according to the measurement result at the first slot of the present time frame, then to arrange onr or more up-lime service slot according to the up-down stream service proportion needed actually to provide UE up-line emitting service data and arrange the pilot frequency slot for up-down stream synchronization, after and the base station informs UE to prepare for receiving down-stream service data after the pilot slot, to provide high speed downstream service to the user according to the scheduled result.

Description

technical field [0001] The invention relates to a transmission method of packet data service in a wireless communication system adopting time division duplex (TDD) standard. Background technique [0002] In the third-generation wireless communication system currently adopting the TDD standard, such as in the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, data transmission is usually carried out by the following method: using 96-chip downlink pilot time slots (DwPTS) realizes the synchronization of downlink reception; uses the uplink pilot time slot (UpPTS) added to the 96-chip guard period (GP) to realize the synchronization of uplink reception; and finally provides transmission services for data of different users through business time slots with the same time length . The time slot structure reference used by the above method figure 2 , the figure describes a subframe structure in TD-SCDMA with a fixed time length of 5ms and 6400 chips. In th...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L5/14
CPCH04L1/0025H04L5/1453
Inventor 周雷郑志彬陈月华
Owner HUAWEI TECH CO LTD
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