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Power control method and evolved node B

A power control and power technology, applied in the field of communication, can solve the problems of waste of resources, large space occupied by RRC messages, affecting system performance, etc., to achieve the effect of improving performance and saving resources

Inactive Publication Date: 2017-06-30
HUAWEI TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, RRC messages take up a lot of space. When there are many users, there are more RRC messages that need to carry transmit power offsets. Through field tests, it is found that RRC messages for SRS power control account for about 5% to 10% of the total messages. RRC messages will cause a lot of waste of resources and affect system performance

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  • Power control method and evolved node B
  • Power control method and evolved node B
  • Power control method and evolved node B

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Embodiment Construction

[0029] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the drawings and embodiments.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031]The embodiments provided by the present invention are mainly applied between the base station eNodeB 10 and the user equipment UE 20 . Such as figure 1 as shown, figure...

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Abstract

The embodiment of the invention discloses a power control method and an evolved node B. The method comprises the steps that the evolved node B receives a sounding reference signal SRS sent by user equipment UE; a signal to interference plus noise ratio is obtained according to the SRS; when the signal to interference plus noise ratio is not in a preset threshold interval range, it is determined to adjust the transmitting power of the SRS; and indication information is sent to the UE, wherein the indication information can be a DCI (Downlink control information) message or a state cache report, the indication information comprises power bias state information, and the UE obtains a power bias value according to the power bias state information and adjusts the transmitting power of the SRS according to the power bias value. The power bias state information is sent in a form of the DCI message or the state cache report, system resources can be greatly saved, and message loads are greatly reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a power control method and a base station. Background technique [0002] An eNodeB (Evolved Node B, eNB for short, the name of a base station in LTE) uses a sounding reference signal (Sounding reference signal, SRS for short) to estimate uplink channel quality in different frequency bands. When a user equipment (User Equipment, referred to as UE) needs to transmit uplink data, the scheduler on the eNodeB side can allocate a resource block (Resource Block, referred to as RB) with a better instantaneous channel state to the UE according to the "uplink channel state estimation". The physical uplink shared channel is used for transmission, and different transmission parameters (eg, instantaneous data rate) can be selected; and different parameters related to uplink multi-antenna transmission can be selected (ie, used for "uplink frequency selective scheduling"). The S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24
Inventor 颜俊杰赵微钱丰勇严朝译
Owner HUAWEI TECH CO LTD
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