Radio forwarding communication system and method

A communication system and wireless communication technology, applied in the field of orthogonal frequency division multiplexing access wireless relay communication system, can solve the problems of sensitive sub-channel interference, poor frequency diversity effect, low throughput of the relay system, etc. The effect of increasing throughput

Active Publication Date: 2007-09-12
XFUSION DIGITAL TECH CO LTD
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Problems solved by technology

[0008] 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
[0009] 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-

Method used

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  • Radio forwarding communication system and method
  • Radio forwarding communication system and method
  • Radio forwarding communication system and method

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Embodiment Construction

[0036] As shown in Fig. 4, the present invention is based on OFDM (or OFDMA) advanced relay system model of network coding technology. Among them, RS communicates with BS and MS / SS using FDD / OFDMA (or OFDM sub-channel) mode, BS downlink and RS uplink use frequency f1, BS uplink and RS downlink use frequency f2, and RS only needs a set of FDD wireless transceivers. The MS / SS performs wireless relay access to the BS through the RS, and the RS accesses the BS as an MS / SS. DL BS It is the downlink subframe of the physical layer frame of BS, from BS to SS / MS BS or RS, UL BS is the uplink subframe of the physical layer frame of the BS, by the SS / MS BS or RS to BS; DL RS It is the downlink subframe of the physical layer frame of RS, from BS to SS / MS RS or RS, UL RS It is the uplink subframe of the physical layer frame of the RS, which is determined by the SS / MS RS or RS to BS.

[0037] The base station and the subscriber station only need 2 time slots to exchange data packets...

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Abstract

An interim wireless communications system, including base stations BS, transit stations and user terminals RS; the RS and BS respectively, provide user terminals and communication interface, the RS includes a frequency division duplex FDD wireless transceiver and network-based coding technology wireless link layer processing unit; BS and end users FDD - included in both wireless transceiver and decoding technology based on the wireless network link layer processing unit; RS, BS and user terminals FDD wireless transceiver contains the wireless transmitter FDD physical layer processing units and wireless receiver FDD physical layer processing unit; the transmitter RS FDD physical layer department rationale receiver modules and FDD physical layer processing unit with BS and user terminals in receiver FDD physical layer processing units and wireless transmitter FDD physical layer processing unit counterparts. In addition, the inventionincludes a transit system based on the communication method whichcanincrease the throughput of transit.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a network coding-based Orthogonal Frequency Division Multiple Access (OFDMA) wireless relay communication system and method. Background technique [0002] IEEE 802.16 is the first broadband wireless access standard. There are two main versions: the broadband fixed wireless access version of the 802.16 standard, "802.16-2004" and the broadband mobile wireless access version of the 802.16 standard, "802.16e". 802.16-2004 defines only two types of network elements, BS and SS; 802.16e also defines only two types of network elements, BS and MSS. At present, 802.16 Multihop Relay SG (802.16 Multihop Relay Research Group) only proposes the concept of WiMAX relay station (RS). One of its important functions is as a relay between BS and SS / MSS, expanding the coverage of BS or adding subscriber stations. throughput. In order to support RS, what modifications and enhancemen...

Claims

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Application Information

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IPC IPC(8): H04B7/204H04L27/26
CPCH04B7/15557
Inventor 郑若滨
Owner XFUSION DIGITAL TECH CO LTD
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