Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A modeling method based on ppp distribution and ofdm system in asynchronous d2d network

A modeling method and network technology, applied in the field of mobile communication, can solve the problems of complex interference power calculation and inability to achieve accurate synchronization, and achieve the effect of easy handling

Active Publication Date: 2021-01-01
NANJING UNIV OF POSTS & TELECOMM
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at a series of problems such as complex calculation of interference power in an asynchronous network in which each user in the D2D network cannot be accurately synchronized and the time is misaligned, the present invention proposes a construction based on PPP distribution and OFDM system in the asynchronous D2D network. Modular method to simplify the calculation of SINR

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
  • A modeling method based on ppp distribution and ofdm system in asynchronous d2d network
  • A modeling method based on ppp distribution and ofdm system in asynchronous d2d network
  • A modeling method based on ppp distribution and ofdm system in asynchronous d2d network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The present invention will be further described now in conjunction with accompanying drawing.

[0056] Such as figure 1 As shown, a modeling method based on PPP distribution and OFDM system in an asynchronous D2D network proposed by the present invention includes 10 steps.

[0057] A general D2D communication system such as figure 2 As shown, it includes modes such as intra-cell D2D communication and inter-cell D2D communication. The modeling method proposed by the present invention is based on the research of D2D communication in the same cell. It is assumed that in the D2D network, the location of each user obeys the PPP distribution. The asynchronous D2D network system model based on PPP is as follows: image 3 shown. A receiving device receives discovery signals from N different sending devices at the same time, each user in the network is asynchronous, each communication link has its own time deviation D, and they are independent of each other. Assuming that i...

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 modeling method in an asynchronous D2D network based on PPP distribution and an OFDM system. Supposing that one receiving device receives discovery signals from N transmitting devices at the same time, all users are asynchronous in the network, communication links have a corresponding time deviation D and are independent of each other and the positions of the users in the region follow the Poisson point process distribution, the method comprises the following steps: dividing OFDM transmitting time misalignment into four conditions, carrying out the detailed link stage analysis, obtaining a signal power expression, simplifying the total interference power withstood by a receiving end through the further hypothesis verification, and finally proposing a first-order SINR model which is easy to process. The method accords with an actual communication environment very well, can be very conveniently used for the system-level research of the asynchronous D2D network, and overcomes a difficulty in system-level research modeling. In addition, the method also can be used for the system-level performance analysis of an ad-hoc network and a cellular network.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and proposes a modeling method based on PPP distribution and OFDM system for asynchronous D2D network, which can be used for system-level research of asynchronous D2D network to solve the problem of system-level research modeling. Background technique [0002] As a key technology of 5G in the future, direct-to-device (D2D) technology allows mobile terminals to directly communicate point-to-point without going through a base station. It is a technology that allows terminals to communicate directly by multiplexing cell resources. The characteristics of low latency, high reliability, and low power consumption exhibited by 5G transmission can well serve IoT applications. The D2D technology can improve the total throughput of the network, and while saving wireless resources, it can also reduce the burden on the base station and shorten the communication time. In addition, since the dista...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/021H04W8/00H04W16/22
CPCH04W4/021H04W8/005H04W16/22
Inventor 谢静宋荣方刘曼
Owner NANJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com