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Data transmission method of TDD system

A data transmission method, technology of time division duplex system, applied in transmission system, radio transmission system, communication between multiple stations, etc., can solve problems such as waste, large channel resources, low efficiency of data transmission, etc., to improve efficiency Effect

Active Publication Date: 2009-05-13
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

For the TD-SCDMA system, a large channel resource is wasted when transmitting data, resulting in low efficiency of data transmission
[0005] At present, a new frame structure is proposed, in which the length of the downlink pilot time slot, guard interval, and uplink pilot time slot can be flexibly set, but there is still a part of the DwPTS that only carries the P-SCH channel, and other resources are vacant The problem

Method used

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  • Data transmission method of TDD system
  • Data transmission method of TDD system
  • Data transmission method of TDD system

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] see image 3 , the present invention provides a new frame structure, as shown in the figure, each wireless frame is divided into two half-frames of 5ms duration, and each half-frame of 5ms is divided into 8 regular service time slots with a length of 0.5ms and 1 A special slot area with a length of 1ms. Wherein, the special time slot area is composed of DwPTS, GP and UpPTS, and a subframe is composed of two regular service time slots.

[0030] In the present invention, the specific lengths of DwPTS, GP, and UpPTS are flexibly configured by high-level signaling (for example, MAC layer data), so as to ensure that they can still be compatible with the TD-SCDMA system when different allocation ratios of uplink and downlink time slots are allocated. Adjusting the length of the GP time slot can adapt to the coverage requirements of different cells....

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Abstract

The invention discloses a method for transmitting data of a time division duplex system. The method comprises the following steps: a channel bearing position of a down link pilot frequency time slot DwPTS meeting the conditions of down link data transmission is determined; the down link data is transmitted on the DwPTS. Through the implementation of the method, the resource part of the DwPTS except PSCH can also be used for transmitting and controlling signaling, pilot frequency symbols and other data, and problems of other unused resources of the DwPTS except bearing P-SCH channel can be avoided, thereby improving the efficiency for down link data transmission of the time division duplex system.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for data transmission in a time division duplex system. Background technique [0002] With the rapid development of mobile communication technology, the third generation mobile communication (3G) technology has become increasingly mature. 3G technology uses code division multiple access (CDMA) mode, and modulates with a high-speed pseudo-random code whose bandwidth is much larger than the signal bandwidth, so that the bandwidth of the original data signal is expanded, and then modulated by the carrier and sent out. The receiving end uses the same pseudo-random code to perform correlation processing with the received bandwidth signal, and replaces the broadband signal with the narrowband signal of the original information data, that is, the despreading process, to realize information communication. Among them, TD-SCDMA technology is the only CDMA standard implemented ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B7/208
Inventor 肖国军索士强王立波唐海
Owner DATANG MOBILE COMM EQUIP CO LTD
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