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Method and device for adjusting power

A power and signal power technology, applied in the field of communication, can solve the problems of unable to adjust the power of multiple users, wasting energy, and lacking flexibility

Active Publication Date: 2009-11-11
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, as the channel environment changes, the power adjustment requirements of different users are different. The joint power control method does not take this difference into account, but compulsively converges, and cannot perform targeted power adjustments for multiple users. lack of flexibility
And taking the user with the worst channel quality as a reference not only wastes the energy of users with better channel quality, but also increases the co-channel interference

Method used

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  • Method and device for adjusting power

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Embodiment Construction

[0022] The embodiments of the present invention perform symbol-level power allocation on the paired users, comprehensively consider the needs of the paired users, adjust the power of the users in a targeted manner, meet the transmission quality requirements of the paired users, and basically do not increase system overhead. Wherein, symbol-level multiplexing refers to independently modulating the bit data of each user, and performing user multiplexing after the modulation is completed, that is, one user corresponds to one symbol before multiplexing. Therefore, in the embodiment of the present invention, power allocation is performed on multiple users before user multiplexing, which is more targeted and more flexible.

[0023] see figure 1 , the main flow of the power adjustment method in this embodiment is as follows:

[0024] Step 101: Obtain the channel quality measurement value of each user in the paired users. Wherein, the channel quality measurement value is a concrete ...

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Abstract

The invention discloses a method for adjusting power, which is used for realizing symbol-level power distribution and reducing same frequency interference among users. The method comprises the following steps: obtaining a channel quality measuring value of each user in paired users; determining a difference of a maximum channel quality measuring value and a minimum channel quality measuring value; and when the difference is larger than a predetermined threshold value, adjusting the power of a user with the maximum channel quality to be lower, and / or adjusting the power of a user with the minimum channel quality measuring value to be higher. The invention also discloses a device for realizing the method.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for adjusting power. Background technique [0002] Power has always been one of the focuses in the field of wireless communications. Due to the use of time division, frequency division or code division technology, each user is independent of each other, so for different users, independent power control can be used. [0003] The Multi-User Reusing One Slot (MUROS) technology proposes that multiple users reuse resources of the same time slot of the same frequency, that is, multiplex information of multiple users on the same channel for transmission. Orthogonal Sub Channel (OSC) technology is used to multiplex the information of two users on the same channel through Quadrature Phase Shift Keying (QPSK) modulation on the downlink. That is, through bit-level multiplexing of multiple users at the same frequency and at the same time slot, the purpose of improving voice ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24
CPCY02B60/50
Inventor 杨光邓娟费泽松黄宇红
Owner CHINA MOBILE COMM GRP CO LTD
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