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

A technology for power control and user equipment, applied in power management, transmission path separation devices, electrical components, etc., to reduce complexity and optimize reliability

Active Publication Date: 2011-05-25
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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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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Example Embodiment

[0046] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not 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. The application scenario 100 includes a base station 104, a UE 102, and CCs 106, 108, and 110.

[0048] The present invention divides the scenarios of simultaneous transmission of multiple data channels with limited power under carrier aggregation into two types: PUSCH w / o UCI and multiple PUSCHs (hereinafter all refer to 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 CC open-loop power control parameters sent by the base station;

[0051] S2, the UE obtains ...

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Abstract

The invention discloses an uplink power control method, user equipment (UE) and a carrier aggregation (CA) system. The method comprises the following steps: the UE receives open loop power control parameters of component carrier (CC) from a base station, acquires path loss values for each CC of the UE and the base station, determines initial transmitting power for each CC of the UE in accordance with the open loop power control parameters and the path loss values; if the initial transmitting power is required to adjust, the UE sets power allocation priority coefficients sent to the base station among all types of channels; the UE sets power allocation priority coefficients sent to the base station inside a plurality of Bs; and the transmitting power for the CCs of the UE is determined in accordance with the initial transmitting power, the power allocation priority coefficients among all types of channels and the power allocation priority coefficients insides the plurality of Bs. According to the invention, the UE in the CA system is subjected to effective power control, the complexity of the UE is reduced, and the reliability for controlling information by the UE, the performancesof data channels and the overall performances of the system 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 an uplink of a wireless communication system, 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 of 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 powe...

Claims

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Application Information

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IPC IPC(8): H04W52/10H04W52/14H04W52/24
CPCH04W52/10H04W52/242H04L5/001H04W52/146Y02B60/50H04W52/50
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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