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Uplink power control method, user equipment (UE) and carrier aggregation (CA) system

A technology of power control and user equipment, applied in power management, transmission path separation devices, electrical components, etc., to achieve the effect of optimizing reliability and reducing complexity

Active Publication Date: 2013-10-09
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to effectively control the power of the user equipment in the CA system, reduce the complexity of the user equipment, optimize the reliability of the user equipment control information, the performance of the data channel and the overall performance of the system

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  • Uplink power control method, user equipment (UE) and carrier aggregation (CA) system
  • Uplink power control method, user equipment (UE) and carrier aggregation (CA) system
  • Uplink power control method, user equipment (UE) and carrier aggregation (CA) system

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Embodiment Construction

[0046] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0047] figure 1 It is a schematic diagram of a carrier aggregation application scenario 100 according to an embodiment of the present invention. In the application scenario 100 , a base station 104 , a UE 102 , and CCs 106 , 108 , and 110 are included.

[0048] The present invention divides the simultaneous transmission scenarios of multiple data channels with limited power under carrier aggregation into two types: PUSCH w / o UCI and multiple PUSCHs (hereinafter referred to as PUSCH without UCI).

[0049] Such as figure 2 As shown, based on the above two scenarios, the method includes the following steps:

[0050] S1. The UE receives the open-loop power control parameters...

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Abstract

Disclosed are an uplink power control method, user equipment and carrier aggregation system. The method comprises: a UE receiving an open loop power control parameter of a CC transmitted by a base station; the UE acquiring a path loss value between each CC thereof and the base station; the UE, according to the open loop power control parameter and the path loss value, determining initial transmission power of each CC of the UE; if it is determined that the initial transmission power needs to be adjusted, the UE setting power allocation priority coefficients of various channels used in data transmission to the base station; the UE setting power allocation priority coefficients inside multiple Bs transmitted to the base station; and the UE, according to the initial transmission power, the power allocation priority coefficients of various channels and the power allocation priority coefficients inside multiple Bs, determining transmission power of the CC of the UE. In the present invention, effective power control is performed on the user equipment in a CA system, so that the complexity of the user equipment is reduced, and the reliability of the control information of the user equipment, the performance of data channels as well as the overall system performance are optimized.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to an uplink power control method, user equipment and a carrier aggregation system including the user equipment. Background technique [0002] In the uplink of a wireless communication system, the transmit power of a UE (User Equipment, user equipment) directly affects important indicators such as cell edge performance and system spectrum efficiency. In the LTE (Long Term Evolution, Long Term Evolution) system of UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System), the uplink transmission power is determined by the path loss (Path Loss) of the wireless link, the path loss compensation coefficient, and the target SINR at the receiving end. (Signal to Interference and Noise Ratio, Signal to Interference and Noise Ratio, Signal to Interference and Noise Ratio) and other factors, the base station can also dynamically adjust the transmit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/10H04W52/14H04W52/24
CPCH04W52/50H04W52/242H04W52/146H04L5/001Y02B60/50H04W52/10
Inventor 崔琪楣张平黄雪晴王强陶小峰
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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