Double antenna wireless digital relay unit and its operating procedure and frame structure

Abstract

The present invention discloses a double-antenna wireless digital relay device, an operation method and a frame structure. The relay device comprises a donor antenna, a reemission antenna, a first receiving channel, a first emission channel, a management control unit, a second receiving channel, a second emission channel, a base band processing unit from a terminal to a base station and a base band processing unit from a base station to a terminal. Wherein, the management control unit is connected with and controls these two base band processing units. Concurrent emission and concurrent receiving of the donor antenna and the reemission antenna complete synchronous emission and receiving from the relay to the base station and from the relay to a mobile terminal. With the help of the concurrent emission and receiving of the donor antenna and the reemission antenna, the present invention improves frequency spectrum utilization ratio and makes full use of antenna directivity.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for introducing a wireless digital relay device into a time division duplex wireless communication system. Background technique [0002] IST (Information Society Technologies) WINNER (Wireless World Initiative New Radio) project research report "IST-2003-507581 WINNER D3.4, Definition and assessment of relay based cellular deployment concept for future wireless solutions Cellular deployment concepts for futureradio scenarios considering 1st protocol characteristics)" made a comprehensive evaluation of various existing wireless digital repeater structures and various existing deployment schemes that use wireless digital repeaters to enhance the service capabilities of cellular systems. [0003] The basic structure of the radio access network (RAN) part of the cellular mobile communication system based on fixed wireless digital repeaters given by IST-2003-507581 WINNER D3.4 is sh...

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned prior art has the following disadvantages: a shortcoming of the existing fixed TDD wireless digital repeater and its application mode (frame structure) is that it does not support concurrent (simultaneous reception and / or) simultaneous transmission of the donor antenna and the retransmission antenna. )Work

[0011] 1) The physical frame is divided into uplink frame and downlink frame and works sequentially, so the transmission potential is not fully explored, and the spectrum utilization rate is low;

[0012] 2) The directivity of the donor antenna and the retransmission antenna of the fixed repeater has not been effectively utilized, and the simultaneous transmission of several base stations to the local cell will cause great interference to the terminals in the neighboring cell

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