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Method, device and system for distributing downlink power

A power and allocation factor technology, applied in power management, wireless communication, electrical components, etc., can solve the problem of underutilization of the coding domain and power domain, and achieve the effect of increasing the number of cell access users and improving spectral efficiency

Active Publication Date: 2017-05-10
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method, device and system for allocating downlink power, which solves the defect that the LTE downlink power allocation still does not fully utilize the characteristics of the coding domain and the power domain in the prior art

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  • Method, device and system for distributing downlink power
  • Method, device and system for distributing downlink power

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Embodiment Construction

[0022] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0023] As a new type of non-orthogonal multiple access technology, PDMA utilizes the asymmetry of multi-user channels, and realizes time-frequency domain, code domain, power domain and Multi-dimensional non-orthogonal signal superimposition transmission in the space domain, that is, mapping on the multi-dimensional signal domain to form a non-orthogonal codebook pattern that distinguishes multiple users to obtain higher multi-user multiplexing and diversity gain. The design idea of ​​this technology is: for code domain superposition transmission, multiple users use the columns of the PDMA pattern matrix to distinguish on the same time-frequency resource; for power domain superposition transmission, multiple users use different transmission Power to disti...

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Abstract

An embodiment of the invention provides a method, a device and a system for distributing downlink power. The method comprises the steps of defining a user which requires pairing according to positions of users in a cell; defining a PDMA pattern matrix, distributing different PDMA pattern vector groups for each user, and forming a power distribution pattern matrix according to the PDMA pattern vector group; defining a power distribution factor of each user in one pair according to the power distribution pattern matrix, and defining the downlink transmitting power of each user according to the power distribution factor. On the condition that user fairness is considered, different PDMA pattern vector groups and powers can be distributed to the users according to the positions of the users through PDMA technology, and difference between a coding domain and a power domain is sufficiently used for receiving, thereby improving average and edge user spectrum effectiveness of the cell and increasing number of accessing users of the cell.

Description

technical field [0001] The present invention relates to the technology of the long-term evolution system, in particular to a method, device and system for allocating downlink power. Background technique [0002] Similar to traditional time division multiple access (TDMA, Time Division Multiple Access), frequency division multiple access (FDMA, Frequency Division Multiple Access), code division multiple access (CDMA, Code Division Multiple Access) access technologies, pattern division multiple access (PDMA, Patten Division Multiple Access) technology, as a key technology of 5G, can enable multiple users to transmit on the same time-frequency domain and space domain resources, and distinguish between users through the coding domain and power, and improve the average cell and edge user spectrum. Efficiency, and increase the number of cell access users. [0003] The downlink of the Long Term Evolution (LTE, Long Term Evolution) system adopts power allocation technology. In orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/28H04W72/04
CPCH04W52/146H04W52/262H04W52/283H04W72/0473
Inventor 康绍莉孙晓东刘昊任斌毕海
Owner DATANG MOBILE COMM EQUIP CO LTD
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