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Relay method, relay system and relay device

A relay and relay station technology, which is applied in the communication, network planning, electrical components and other directions between multiple stations, can solve the problems of system interference and low reliability of system relay, and achieve the effect of improving relay reliability.

Inactive Publication Date: 2008-05-28
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007]However, in the existing license-free mobile communication system, because the relay forwarding of RS will cause interference to the system, the relay reliability of the system is not high

Method used

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  • Relay method, relay system and relay device
  • Relay method, relay system and relay device
  • Relay method, relay system and relay device

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention are further described in detail below.

[0039] The basic idea of ​​the embodiment of the present invention is: according to the characteristics of the license-free mobile communication system, the RS performs relay forwarding through the corresponding wireless resources according to the instructions of the BS; the RS switches the current relay mode according to the instructions of the BS; the RS senses Changes in the wireless environment and interference analysis; RS adjusts its transmission frequency according to changes in the wireless environment or instructions from the BS to improve relay reliability.

[0040] figure 2 It is a schematic diagram of the relay system in the embodiment of the present invention. Such as figure 2 As shown, the relay system in this embodiment includes: BS, RS and CPE.

[0041] Among them, the CPE ...

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Abstract

The invention relates to a relay transfer method which comprises the following steps: a base station sends a first relay information element to a relay station, and the resource location belonging to the relay station is indicated; the relay station receives a service data, and the received service data which is required to be relayed is relayed and transferred through a relay area according to the indication of the base station. The invention also provides a relay mode switch method, a relay sensing method, a relay system, and a relay device. The relay station of the invention can perform the relay transfer of the service data through the relay area according to the indication of the base station, and adjust the transfer frequency, and the relay reliability can be improved. In addition, the relay station of the invention can switch the current relay mode according to the indication of the base station. The relay station of the invention also can sense the peripheral wireless environment, inform the base station when the self coverage area is judged to be interfered, and adjust the sending frequency to adapt the change of the wireless environment.

Description

technical field [0001] The present invention relates to relay technology, in particular to a relay method, a relay system and a relay device. Background technique [0002] License-exempt Operation (License-exempt Operation) mobile communication system is mainly used to provide fixed broadband access for relatively remote areas with low population density. [0003] Taking the Wireless Regional Area Network (WRAN) system as an example, the system uses cognitive radio technology to find free frequency bands for licensed users (LU) to communicate. The communication process is based on Time Division Duplex (Time Division Duplex, TDD ) Orthogonal Frequency Division Multiplexing Access (OFDMA) technology to achieve. For example, the WRAN system looks for an unoccupied free frequency band as its own bearer frequency band in the VHF / UHF (Very High Frequency / Ultra High Frequency, VHF / UHF) licensed frequency band of wireless digital TV, and uses the superframe Realize the transmissio...

Claims

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Application Information

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IPC IPC(8): H04Q7/30H04B7/26H04W16/26H04W88/04
Inventor 吕林军
Owner HUAWEI TECH CO LTD
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