Large-scale D2D communication method based on HARQ assisted NOMA

A communication method, a large-scale technology, applied in the direction of machine-to-machine/machine-type communication services, wireless communication, error prevention/detection using the return channel, etc., which can solve the problem of decreased reception performance of receivers, increased probability of interruption, and failure to consider How to improve the negative effects of strong network and other issues

Active Publication Date: 2018-09-28
JINAN UNIVERSITY
View PDF7 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to further improve spectrum utilization, the present invention applies NOMA technology to D2D communication. However, when D2D communication is applied on a large scale, it will encounter a very fatal technical bottleneck, that is, between limited spectrum resources and excessive spectrum reuse. The contradiction between them leads to strong network superimposed interfe...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Large-scale D2D communication method based on HARQ assisted NOMA
  • Large-scale D2D communication method based on HARQ assisted NOMA
  • Large-scale D2D communication method based on HARQ assisted NOMA

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0069] Non-orthogonal multiple access (NOMA) is an important technology for next-generation mobile communications. For example, multi-user overlay transmission using NOMA has been proposed to 3GPP as a transmission technology for the downlink of LTE-A. In these scenarios, some D2D users can act as relays to assist the base station to forward messages, so as to expand the coverage of the wireless network. In addition, in order to alleviate the severe interference from the base station, we assume that the D2D network works in the overlay mode, in which the D2D network uses dedicated spectrum resources for communication. In a D2D network, the locations of all D2D devices are randomly distributed. A widely used modeling method is adopted here, that is, it is assumed that all D2D sending devices occupying the same time-frequency resources obey the homogeneous Poisson point process Its strength is defined as λ . All D2D devices are equipped with backlog buffers and transmit over ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a large-scale D2D communication method based on an HARQ assisted NOMA. The method comprises the steps of firstly using a random geometric method to analyze the influence of superimposed interference in a D2D network on an outage probability; then deducing a specific expression of spectrum efficiency by using a relation between the outage probability and the spectrum efficiency; and at last building a resource distribution optimization problem based on theoretical analysis results: by reasonably setting the information transmission rates of different D2D users, even occupying the distribution density of the D2D terminal having the same time frequency resources, the spectrum efficiency (throughput capacity or spatial spectrum utilization rate) is maximized and meanwhile the communication reliability is ensured. Simulation and numerical results show that the outage probability of the collaborative application scheme provided by the invention is reduced by 23% thanthat of the non-collaborative mode; in addition, the spectrum efficiency of the method using the non-orthogonal multiple access (NOMA) technology is improved by 17% than that using the orthogonal multiple access (OMA) technology.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a large-scale D2D communication method based on HARQ-assisted NOMA. Background technique [0002] According to the white paper ITU-R M.2083-0 issued by the ITU, the goal of the next generation mobile cellular network (5G) is not only to enhance mobile broadband services, but also to provide wireless links that support a large number of terminals in the future Internet of Things mode, At the same time, it is necessary to ensure ultra-reliable and low-latency communication services. Supporting massive machine-form connections in the Internet of Things, as well as providing ultra-reliable and low-latency communication for certain services. These new requirements have brought unprecedented challenges to traditional communication based on Orthogonal Multiple Access (OMA) and base station. Therefore, 3GPP considers adopting more greedy schemes with high spectru...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04W4/70H04W52/24H04W72/04H04L1/18
CPCH04L1/1812H04W4/70H04W52/243H04W72/0453
Inventor 施政杨光华陈德举马少丹屈挺
Owner JINAN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap