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Method and system for controlling long term evolution (LTE) uplink power

A power control and power technology, applied in the field of communication, can solve the problems of increasing system load, different frequencies of two channels, and inability to transmit at the same time, so as to reduce interference and reduce power waste.

Active Publication Date: 2010-05-19
WUHAN POST & TELECOMM RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the LTE system, for a UE, PUSCH (Physical Uplink Shared Channel) and PUCCH (Physical Uplink Control Channel) cannot be transmitted at the same time, so there is a problem that the transmission frequencies of the two channels are different.
Considering the efficiency problem, if a power control is performed on each PUSCH or PUCCH of a UE and a power control command is fed back, this will inevitably increase the load on the system

Method used

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  • Method and system for controlling long term evolution (LTE) uplink power
  • Method and system for controlling long term evolution (LTE) uplink power

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Embodiment Construction

[0042] The purpose of the present invention is to provide an LTE uplink power control method, which enables users to obtain acceptable service requirements with the minimum power in response to the current wireless environment, thereby minimizing interference and reducing UE power waste.

[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] see figure 1 , which is a flowchart of the LTE uplink power control method according to the first embodiment of the present invention.

[0045] The LTE uplink power control method described in the embodiment of the present invention comprises the following steps:

[0046] S100. Group the wireless terminals accessing the cell.

[0047] Each group of UEs has an independent timer.

[0048] Time starts from the first UE in the group where ...

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Abstract

The invention relates to a method and a system for controlling the long term evolution (LTE) uplink power, comprising the following steps: grouping user equipment (UE) accessed to a cell; controlling the power of the UE in each group to obtain a group of power control commands; sending the power control commands to the UE in the group; and adjusting the power control commands sent to the UE in the group according to the power control commands by the UE. Due to the adoption of the method and the system for controlling the LTE uplink power, the user can obtain the acceptable service demand with the minimum power according to the current wireless environment so that the disturbance can be reduced to the maximum extent and the waste of the power of the UE can be reduced.

Description

technical field [0001] The present invention relates to the communication field, in particular to an LTE uplink power control method and system. Background technique [0002] LTE (Long Term Evolution, long-term evolution) is an emerging technology, so there are few relevant technical materials. For the power control method of PUSCH (Physical Uplink Shared Channel) in LTE, reference may be made to the power control method in WCDMA (Wideband Code Division Multiple Access). [0003] Since LTE uplink adopts SC-FDMA (Single Carrier Frequency Division Multiple Access) technology, the uplink signals of different UEs (wireless terminals) in a cell are orthogonal to each other, so there is no WCDMA (Wideband Code Division Multiple Access) The necessity of power control in the system due to the near-far effect. LTE uplink power control is mainly used to compensate channel path loss and shadowing, and to suppress inter-cell interference. The power control used for these purposes doe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/14H04W52/24
CPCY02B60/50
Inventor 汪雪朱宇霞雷亮宋延坡
Owner WUHAN POST & TELECOMM RES INST CO LTD
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