Method, system and relay equipment for power control

A technology of relay equipment and power control, which is applied in the direction of transmission control/equalization, communication between multiple stations, etc., and can solve problems such as inability to adapt to multi-hop cellular mobile communication systems.

Inactive Publication Date: 2009-09-09
CHINA ACAD OF TELECOMM TECH
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  • Claims
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Problems solved by technology

[0028] It can be seen that in the existing single-hop cellular mobile communication system, its power control technical solution only involves direct signal measurement and power control information transmission between the base station and the mobile station, while in the RS-based multi-hop cellular mobile communication system, BS and MS communicate indirectly through RS, so the signal measurement mechanism and power control information transmission of the existing power control technology scheme cannot adapt to the RS-based multi-hop cellular mobile communication system

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  • Method, system and relay equipment for power control
  • Method, system and relay equipment for power control

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Embodiment Construction

[0058] Since in the existing single-hop cellular mobile communication system, BS and MS communicate directly, in the power control technical scheme of the single-hop cellular mobile communication system, the BS measures the uplink signal sent by the MS, and calculates the power from the measurement result. In the multi-hop cellular mobile communication system including MS, RS, and BS, the data between MS and BS needs to be forwarded through RS. If the BS is still used for uplink signal measurement, the result is the The measurement result of the uplink signal on the uplink path reflects the impact of the uplink path from RS to BS on the uplink signal. After applying the measurement result to the uplink power control of the MS, the control is from the MS to the RS. The power of the uplink signal of an uplink path, MS to RS and RS to BS are two unrelated paths, which have different impacts on the uplink signal. Therefore, the power control scheme in the single-hop cellular mobile...

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Abstract

The embodiment of the invention discloses a method for power control in a multi-hop mobile communication system, which is used in a multi-hop mobile communication system consisting of a mobile station MS, relay station RS and a base station BS and comprises the following steps that: the RS receives an uplink signal sent by the mobile station MS, measures the uplink signal, acquires a power control command according to the result of the measurement and transmits the power control command to the MS; and the MS sets a transmission power according to the power control command. The embodiment of the invention also discloses a system for power control and a relay station capable of performing power control. The technical proposal disclosed in the embodiment of the invention can realize power control in an RS-based multi-hop mobile communication system.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a power control method, system and relay equipment. Background technique [0002] In mobile communication systems, power control is a measure taken to overcome the "near-far effect". It changes the transmit power in a timely manner based on the evaluation of the received signal strength and / or signal-to-noise ratio at the receiver. Compensates for path loss and fading in a wireless channel, thereby maintaining communication quality without causing additional interference to other users in the same wireless channel. [0003] Most of the existing mobile communication systems are single-hop cellular mobile communication systems, that is, the direct communication between the mobile station (MobileStation, MS) and the base station (Basic Station, BS) without passing through the intermediate equipment, the wireless link between the MS and the BS The path is an access link, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04B7/26
Inventor 张瀚峰孙韶辉
Owner CHINA ACAD OF TELECOMM TECH
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