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Communication method for time-division duplex mobile communication system

A technology of a mobile communication system and a communication method, which is applied in the communication field of a time-division duplex mobile communication system, can solve problems such as long time for returning and receiving response messages, influence, and impact on throughput, and achieve the effect of reducing data transmission delay

Active Publication Date: 2009-12-02
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0009] The purpose of the present invention is to provide a communication method of a time-division duplex mobile communication system to solve the problem that in the prior art, the sending end waits for the receiving end to return a receiving response message for too long, resulting in a long transmission delay and affecting the throughput. Affected technical issues

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  • Communication method for time-division duplex mobile communication system
  • Communication method for time-division duplex mobile communication system
  • Communication method for time-division duplex mobile communication system

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] The current 3GPP specification requires that the TTI of the TD-SCDMA communication system be in units of frames or subframes. In order to reduce the transmission delay of the radio access network, the applicant considers reducing the time length unit of the TTI. For example, the minimum unit of TTI is set in units of service time slots, so as to reduce the response time interval. It is assumed that the physical layer of the network side and the user terminal adopts figure 2 In the disclosed frame structure, although the smallest unit of TTI is a service time slot, due to the small number of uplink and downlink conversion points, the data transmission response time interval cannot be significantly reduced. In order to respond to the data sent in the TS2 time slot, the downlink sending data must be sent in the TS1 time slot of the next wireless subframe, and ...

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Abstract

One of the communication methods of dual -time mobile communication systems, including: (1) Set the minimum unit and system frame structure of the transmission time interval TTI. Each wireless frame is used by several business timelines and at least two conversion protection. The special time slot composition of the gap, the TTI is the minimum unit in the business time slot in the wireless frame; After the modulation, send it through the radio frequency; (3) the receiving terminal receiving data first decodes, and then the corresponding data is obtained after decoding the frame structure set by the step (1), and then the TTI set by the step (1) will return to the receiving response message. In order to send the next data, and then complete the data transmission. Special time slots can also contain a UPPTS and a DWPTS time slot, or a DWPTS time slot. By improving the TDD frame structure and reducing the unit time length of TTI, the effect of reducing data transmission delay.

Description

technical field [0001] The present invention relates to a communication method in a mobile communication system, in particular to a communication method in a Time Division Duplex (TDD) mobile communication system. Background technique [0002] The wireless mobile communication system has developed from the analog communication system of frequency division multiple access (FDMA) to the current third-generation mobile communication system, and the supported services have developed from pure voice services to the current mixed data and voice services, up to high-speed data services . The TDD mobile communication system is also one of the communication methods adopted in the third generation mobile communication standard. The characteristic of the TDD mobile communication system is that the uplink and downlink are in the same frequency band and do not need paired frequencies, so the spectrum utilization is high and the correlation between uplink and downlink resources is small....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26
Inventor 孙韶辉王映民
Owner DATANG MOBILE COMM EQUIP CO LTD
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