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Frame structure and data transmission method for time division duplex radio communication system

A technology of a wireless communication system and a transmission method, which is applied in the field of wireless communication systems, can solve problems such as division of uplink and downlink resources of PHYframes, and achieve the effect of solving resource allocation

Inactive Publication Date: 2009-07-15
ZTE CORP
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Problems solved by technology

[0006] The present invention provides a frame structure and a data transmission method of a time-division duplex wireless communication system to solve the problem of dividing uplink and downlink resources of PHY frames in the prior art

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  • Frame structure and data transmission method for time division duplex radio communication system

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Embodiment Construction

[0021] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 Shown is a schematic structural diagram of a superframe in the TDD 1:1 mode of the embodiment of the present invention. The base station and the terminal use a superframe (the superframe includes a preamble, a downlink transmission block composed of 6 consecutive downlink physical frames, a first time interval, an uplink transmission block composed of 6 consecutive uplink physical frames, and a second time interval in a superframe) interval, another downlink transmission block composed of 6 consecutive downlink physical frames, the third time interval and another uplink transmission block composed of 6 consecutive uplink physical frames) for data transmission, within the duration of a superframe, all The base station first sends a preamble to the terminal, and then sends downlink data to the ...

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Abstract

The present invention discloses a transmission method of time division duplex wireless communication system. The base station and the terminal use a superframe as a unit for data transmission. In the time length of one superframe, the base station transmits a predecessor to the terminal and transmits downlink data to the terminal through 12 downlink physical frames, and the terminal transmits uplink data to the base station through 12 uplink physical frames. The invention also discloses a frame structure of time division duplex wireless communication system. The frame structure is the superframe which is composed of one predecessor and 24 physical frames. The 24 physical frames are divided into downlink physical frames and uplink physical frames according to the number ratio of 1:1 between the downlink physical frames and the uplink physical frames. The solution of the invention settles the problem for dividing uplink and downlink of PHY frames, and simultaneously settles the problems of resource allocation, time delay, guard interval, etc.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to a frame structure and a data transmission method of a TDD (Time Division Duplex, Time Division Duplex) wireless communication system. Background technique [0002] In a wireless system that will transmit data in units of superframes, the uplink and downlink of wireless air interface transmission generally transmit data in units of superframes; each superframe consists of a preamble (preamble) and several PHYs Frame (physical frame); preamble and PHY Frame are composed of OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) Symbol (symbol) as the basic unit. [0003] The current UMB (Ultra Mobile Broadband, Ultra Mobile Broadband), LTE (Long-Term Evolution, long-term evolution), Wimax (Worldwide Interoperability for Microwave Access, global interoperability for microwave access) systems have two duplex methods: FDD (Frequency Divis...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04L29/06
Inventor 辛雨
Owner ZTE CORP
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