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Method and device for power control

A power control and power technology, applied in power management, wireless communication, electrical components, etc., can solve problems such as reducing resource utilization

Inactive Publication Date: 2014-07-09
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, the DPB transmission method can greatly reduce the interference between cooperative transmission points because the power of other transmission coordination points is 0, but at the same time it will also reduce the utilization of resources

Method used

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  • Method and device for power control

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Embodiment Construction

[0043] In order to solve the above problems, an embodiment of the present invention provides a power control method. Such as figure 1 As shown, the method includes the following steps:

[0044] Step 101: Setting a power candidate set (Power Pool).

[0045] In this embodiment, firstly, the concept of a power candidate set (Power Pool) is introduced. The power candidate set is a set of power values ​​that can be adopted by the transmission coordinating points in the transmission coordinating set during data transmission. The set can include at least full power and at least one reduced power between full power and zero power (Reduced Power ). The above-mentioned power candidate set may also include zero power. For example, if the full power of a transmission coordination point is 40w, the power candidate set may include the following power values ​​{0w, 10w, 20w, 30w, 40w}, or include the following power values ​​{0w, 20w, 40w}, or Include the following power values ​​{20w, ...

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Abstract

The invention discloses a method for power control. The method comprises the steps that a power alternative set is set, wherein the power alternative set is a set of power values adopted in transmission cooperation points in a transmission cooperation set in the data transmission process and comprises a full power value and at least one reduced power value between the full power value and zero power; the full power value is selected to serve as a transmitting power value of the first transmission cooperation point in the transmission cooperation set; according to the transmission cooperation points except for the first transmission cooperation point in the transmission cooperation set, each power value is selected from the power alternative set to serve as the transmitting power value of the corresponding transmission cooperation point. The invention further discloses the device for power control. Due to the fact that the transmitting power values can be selected from the power alternative set for the transmission cooperation points except for the first transmission cooperation point, the purpose that the resource use rate is improved as much as possible under the condition that interference between the transmission cooperation points is controlled is achieved.

Description

technical field [0001] The present application relates to the coordinated multiple point transmission technology (Coordinated Multiple Point, CoMP) of a mobile communication network, and in particular to a method and device for power control of multiple transmission coordination points in a transmission coordination set in a CoMP system. Background technique [0002] Cellular mobile phones have brought great convenience to people's communication. The second-generation Global System for Mobile Communication (GSM) adopts digital communication, which further improves the call quality of mobile communication. As an important organization in the field of mobile communication, the 3rd Generation Partnership Project (3GPP) has greatly promoted the standardization of the third generation mobile communication technology (The Third Generation, 3G). Communication systems including Wide Code Division Multiple Access (WCDMA), High Speed ​​Downlink Packet Access (HSDPA), High Speed ​​Upli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24H04W52/34
Inventor 李明菊云翔陈岚加山英俊永田聡
Owner NTT DOCOMO INC