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A downlink multiple access method, base station and terminal

A terminal and base station technology, applied in the field of downlink multiple access, which can solve problems such as unfairness

Active Publication Date: 2019-04-19
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, although the sum of rates increases, the increase is mainly for UEs with good channel conditions, which is unfair to UEs with poor channel conditions

Method used

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  • A downlink multiple access method, base station and terminal
  • A downlink multiple access method, base station and terminal
  • A downlink multiple access method, base station and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0295] The implementation of the present invention provides a downlink MA method, specifically as image 3 shown, including:

[0296] 301. The first base station sends the superposition of the codeword of the first information and the codeword of the second information corresponding to each of the N terminals to the N terminals, where N is a positive integer.

[0297] Wherein, the codeword of the first information corresponding to the rth terminal is obtained according to the transmission rate and transmission power of the codeword of the first information corresponding to the rth terminal, and the codeword of the second information corresponding to the rth terminal is According to the transmission rate and transmission power of the codeword of the second information corresponding to the rth terminal, the transmission rate of the codeword of the first information corresponding to the rth terminal satisfies the first condition, and the second information corresponding to the rt...

Embodiment 2

[0366] An embodiment of the present invention provides a downlink MA method, specifically as Figure 5 shown, including:

[0367] 501. If there is interference from the first base station in an adjacent cell, the second base station sends the superposition of the codeword of the first information and the codeword of the second information corresponding to the fourth terminal to the fourth terminal and the second terminal, and the fourth terminal is For interference-aligned user terminals, the second terminal is an edge user terminal of the first base station.

[0368] The codeword of the first information corresponding to the fourth terminal is obtained according to the transmission rate and transmission power of the codeword of the first information corresponding to the fourth terminal, and the codeword of the second information corresponding to the fourth terminal is obtained according to the transmission power of the codeword of the first information corresponding to the fo...

Embodiment 3

[0394] The implementation of the present invention provides a method for downlink MA, which is used in a cellular communication system. In the cellular communication system, the channels between M first terminals and the first base station belong to the first channel, and the channels between the second terminal and the first base station belong to the first channel. The channel belongs to the second channel, the channel fading factor of the first channel is not less than the channel fading factor of the second channel, M≥1, M is an integer, specifically as Image 6 As shown, the methods include:

[0395] 601. A fifth terminal acquires a first received signal, where the fifth terminal is any one of the second terminal and M first terminals.

[0396] It should be noted that the fifth terminal of the execution subject of the present invention may be any first terminal among the M first terminals, or may be the second terminal, which is not specifically limited in this embodiment...

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Abstract

Embodiments of the present invention provide a downlink multiple access method, a base station, and a terminal, which can achieve a flexible compromise between transmission rates and fairness between different terminals communicating with the base station. The method includes: the first base station sends the superposition of the codeword of the first information and the codeword of the second information corresponding to each of the N terminals to the N terminals, where N is a positive integer; wherein, the rth terminal corresponds to The codeword of the first information is obtained according to the transmission rate and transmission power of the codeword of the first information corresponding to the rth terminal, and the codeword of the second information corresponding to the rth terminal is obtained according to the transmission rate and power of the codeword of the first information corresponding to the rth terminal. The transmission rate and transmission power of the codeword of the second information are obtained, the transmission rate of the codeword of the first information corresponding to the rth terminal satisfies the first condition, and the transmission rate of the codeword of the second information corresponding to the rth terminal satisfies The second condition, 1≤r≤N. The invention is applicable to the communication field.

Description

technical field [0001] The present invention relates to the communication field, in particular to a downlink multiple access method, a base station and a terminal. Background technique [0002] With the development of communication technologies, it has become an indispensable function of a cellular communication system to provide services to multiple terminals (User Equipment, UE) simultaneously using an orthogonal multiple-access (orthogonal multi-access, OMA) technology. The basic idea of ​​the OMA technology is to divide resources into several mutually orthogonal resource blocks and allocate them to different UEs. From the perspective of information theory, the OMA mechanism is strictly suboptimal in most cases. For specific analysis, see the preamble of the specific implementation mode, and will not be repeated here. [0003] It can be seen from the analysis that the transmission rate achieved by the superposition coding-successive decoding (SC-SD) mechanism is strictly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
CPCH04L5/00H04J11/0026H04J11/003H04J11/0046H04J11/005H04L1/0002H04L1/0009H04L5/0073
Inventor 王雪松
Owner HONOR DEVICE CO LTD
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