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Power control method and power control device

A power control algorithm and power control technology, applied in power management, wireless communication, electrical components, etc., can solve problems such as unsolved solutions, without considering the impact of cross-link interference, and achieve the effect of reducing impact and ensuring performance

Pending Publication Date: 2018-11-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional LTE power control algorithms do not consider the impact of cross-link interference
The prior art has no solution for this problem

Method used

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  • Power control method and power control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] The specific method of uplink power control is as follows:

[0090] Introducing the cross-link interference power compensation sub-item N in the uplink power control algorithm CLI . N CLI It is used to adjust the UL transmission power of the UE to combat or reduce cross-link interference.

[0091] Countering cross-link interference mainly refers to adjusting the UL transmission power of the UE, counteracting the cross-link interference caused by the TRP DL transmission of the neighboring cell to the TRP UL reception of the local area, ensuring the UL SINR of the UE, thereby ensuring the UL performance of the system; reducing the cross-link interference Interference mainly refers to adjusting the UL transmission power of the UE to reduce the cross-link interference on the DL reception of adjacent UEs.

[0092] For example, taking the LTE uplink power control algorithm formula (1) as an example, the uplink interference power compensation sub-item N is added to the upli...

Embodiment 2

[0133] If the TRPs determine the planned sending direction, or the sending priority direction through interaction (for example, through backhaul signaling or Over the air air interface signaling) or coordination or other means.

[0134] For example, TRPs determine that UL is a high-priority transmission direction or a planned transmission direction at a certain moment. At this time, UL is between TRP1 and UE1, and DL or no transmission is between TRP2 and UE2. There are two methods for UL power control:

[0135] Method 1: UL power compensation for cross-link interference between TRPs and TRPs, and UL power compensation for cross-link interference between UEs are not considered. The former is that its own TRP is interfered by the TRP of the neighboring cell, and the latter is that the UE causes cross-link interference to the neighboring UE.

[0136] TRP1 is configured with θ=0, that is, ignoring possible cross-link interference from neighboring TRPs to itself and ignoring pos...

Embodiment 3

[0141] Same-link interference and cross-link interference have different interference characteristics. For dynamic TDD and similar systems, the interference situation faced by the previous time slot / subframe may be completely different from the interference situation faced by the next time slot / subframe. In order to solve the power control problem under different links.

[0142] The base station configures two sets of parameters (P O and / or α), P O Include parameter P O_NOMINAL and P UE : The first set of parameters set 1 = {P O_1 , α1}, the second set of parameters set 2 = {P O_2 , α 2}. The first set of parameters is used when there is no cross-link interference or cross-link interference is not considered, and the second set of parameters is used when there is cross-link interference or cross-link interference needs to be considered. Alternatively, the first set of parameters is used when the current cell is subjected to cross-link interference, and the second set o...

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Abstract

The invention discloses a power control method and a power control device. The method comprises the following steps: determining a cross-link interference power compensation subitem, wherein the cross-link interference power compensation subitem is used for adjusting uplink sending power of UE; based on the cross-link interference power compensation subitem, determining an uplink power control algorithm, wherein the cross-link interference power compensation subitem is introduced into the uplink power control algorithm; and based on the uplink power control algorithm, performing uplink power control for the UE.

Description

technical field [0001] The present invention relates to power control technology in the field of wireless communication, in particular to a power control method and device. Background technique [0002] In the past few decades, mobile communication has experienced a leap from voice services to high-speed broadband data services. With the further development of new services such as the mobile Internet and the Internet of Things, people's new demands on mobile networks will further increase. On the one hand, it is expected that mobile network data traffic will explode in the future. On the other hand, massive device connections and diverse services and applications are one of the important features of future wireless communication systems, and human-centric communication and machine-centric communication will coexist and develop. Based on the diverse business and application requirements of future mobile communications, wireless communication systems must meet diverse requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/14H04W52/24
CPCH04W52/143H04W52/243H04W52/14H04W52/24
Inventor 徐汉青赵亚军李新彩杨玲刘娟
Owner ZTE CORP
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