Radio transfer communication system and method based on admixture of FDD and TDD

Abstract

The invention mainly consists of the base station (BS), the relay station (RS), and the user terminal (UT). RS provides interfaces to comm. respectively with BS and UT. RS includes two time-division duplex (TDD) wireless emitter physical layer units (WEPLU) working on different frequencies and two TDD wireless receiver's physical layer units (WRPLU) working on corresponding different frequencies. BS and UT possess respectively FDD-WEPLU and FDD-WRPLU working on the corresponding frequencies against the RS frequencies. Besides, the invention sets related physical layer frame structure of BS and RS. Therefore, the wireless relay comm. can be realized between BS and RS via the physical layer frames. Via the FDD-TDD combination / TDM / TDMA, the invention ensures the relay comm. between RS, BS and MS / SS effectively and avoids the various interferes may be existed effectively.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless relay communication system and method based on FDD and TDD mixing. Background technique [0002] IEEE 802.16 is the first broadband wireless access standard, which mainly includes two versions: one is the broadband fixed wireless access version 802.16-2004 of the 802.16 standard, and the other is the broadband mobile wireless access version 802.16e of the 802.16 standard. Among them, 802.16-2004 only defines two kinds of network elements, BS (base station) and SS (subscriber station); 802.16e also defines only two kinds of network elements, BS and MSS (mobile subscriber station), the SS / MSS may be collectively referred to as a user terminal. [0003] At present, 802.16 Multihop Relay SG (802.16 Multihop Relay Research Group) only proposed the concept of RS relay station for WiMAX (Global Interoperability of Microwave Access). A relay communication enti...

AI Technical Summary

Problems solved by technology

[0011] The first is to divide the carrier into continuous groups, which is the simplest to implement, and the adjacent sub-channel interference is small, but the effect of frequency diversity obtained is poor

[0012] The second is that carriers of different sub-channels are interleaved in a regular manner. This frequency diversity effect is better, but the system is more sensitive to inter-sub-channel interference.

[0018] Although the above-mentioned OFDM or OFDMA technical structure can meet the communication needs in the communication system, for the relay communication system including RS, there is no corresponding technology that can meet the corresponding relay communication needs.

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