Method for selecting wireless digital relay system and transmission time spacing

A technology of transmission time interval and digital relay, applied in the field of communication, can solve the problems of reducing transmission power, not supporting transmission time interval, unable to optimize transmission efficiency and delay, so as to solve the power supply problem and improve the effect of spectrum utilization.

Inactive Publication Date: 2008-02-06
ZTE CORP
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  • Abstract
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Problems solved by technology

[0003] A disadvantage of the existing fixed TDD (Time Division Duplex, Time Division Duplex) wireless digital relay system is that it does not support flexible transmission time intervals, so that the transmission efficiency and delay cannot be optimized in different channel environments, nor can it It is beneficial for mobile terminals to reduce transmit power through time diversity

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  • Method for selecting wireless digital relay system and transmission time spacing
  • Method for selecting wireless digital relay system and transmission time spacing

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Embodiment Construction

[0030] Please refer to FIG. 2 , which is a schematic structural diagram of the wireless digital relay system of the present invention. The wireless digital repeater system includes: one or more wireless digital repeaters 101 , one or more base stations 102 , and one or more mobile terminals 103 . Wherein, the base station 102 can establish a communication link with the mobile terminal 103 in a traditional way, or establish a communication link with the mobile terminal 103 through the wireless digital repeater 101 . Here, the mobile terminal 103 includes two mobile terminals, namely the mobile terminal 103a and the mobile terminal 103b.

[0031] A flexible transmission time interval TTI is adopted between the wireless digital repeater 101 and the base station 102 and between the wireless digital repeater 101 and the mobile terminal 103 to improve the transmission efficiency of the system. A frame structure is adopted between the wireless digital repeater 101 and the base stati...

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Abstract

The present invention discloses a method of wireless digital relay system and transmission time interval selection, which is suitable for time division duplex wireless communication system. The relay system comprises at least a wireless digital repeater, at least a base station, at least a mobile terminal. Linkage between the base station and the wireless digital repeater is divided into a first uplink and a first downlink; the linkage between the wireless digital repeater and the mobile terminal is divided into a second uplink and a second downlink; the linkage between the base station and the mobile terminal is divided into a third uplink and a third downlink; the first uplink and the first downlink adopt the fixed transmission time interval; the second uplink, the second downlink, the third uplink and the third downlink select adaptively the transmission time interval according to the channel quality of corresponding linkage. By supporting flexible transmission interval, the invention uses the optimal transmission time interval in different channel conditions, optimizes transmission efficiency and time delay, and saves transmission power.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for flexibly selecting a transmission time interval (Transmit Time Interval, TTI) in a time division duplex wireless communication system. Background technique [0002] The basic structure of the radio access network (RadioAccess Network, RAN) part of the cellular mobile communication system based on the fixed wireless digital repeater given by the research project IST-2003-507581 WINNERD3.4 established in the European Information Society Technology Research is shown in the figure As shown in 1: several wireless digital repeaters 101a-101n are distributed around the cellular base station 102 in a certain way, and the mobile terminal 103 establishes a communication link with the cellular base station 102 through one or some wireless digital repeaters, as shown in FIG. In 1, a communication link is established with the cellular base station 102 in a two-hop manner through a wirel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26
CPCY02B60/50Y02D30/70
Inventor 刁心玺
Owner ZTE CORP
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