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

Cooperative slotted aloha method based on trapping effect

A capture effect and time slot technology, applied in wireless network protocols, electrical components, wireless communications, etc., can solve the problem of not considering the application capture effect, and achieve the effects of improving peak throughput, multiple transmission opportunities, and high diversity gain.

Active Publication Date: 2017-03-08
CHANGJIANG SURVEY PLANNING DESIGN & RES
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional cooperative slotted ALOHA method does not consider the application capture effect

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
  • Cooperative slotted aloha method based on trapping effect
  • Cooperative slotted aloha method based on trapping effect
  • Cooperative slotted aloha method based on trapping effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0021] Cooperative slot ALOHA based on capture effect, including the following steps:

[0022] (1) In each time slot, the network may be in normal mode or retransmission mode. The initial state of the network is normal mode. In this mode, the probability of each user sending a data frame in each time slot is p, the probability of not sending a data frame is 1-p, and the sending is independent of each other; users who do not send data frames listen to other The data frame sent by the user, and the correctly monitored data frame is stored in a buffer whose capacity is the size of a data frame.

[0023] (2), in normal mode, according to the capture effect, when the received power (P) of a data frame is greater than the capture ratio (R) multiplied by the received power sum of other data frames sent simultaneously in the network (I) plus the channel Noise (N), that is, ...

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 present invention relates to a cooperating time slot ALOHA method based on acquisition effect, which includes the following steps: (1) In each time slot, the system may be in normal mode or retransmission mode. The initial state of the network is normal mode, and users who have not sent frames overhear frames sent by other users; (2), in the normal mode time slot, users who successfully overhear other user data frames send a message to the base station at the end of the time slot Report frame; (3), at the end of the normal mode time slot, the base station sends a broadcast frame according to the received data frame and report frame, and the network decides whether to switch to the retransmission mode in the next time slot; (4), enters the retransmission mode After the transmission mode, the user whose buffer is not empty sends the monitored data frame with a certain probability. Compared with the traditional cooperative time slot ALOHA method, under the condition of the same link average signal-to-noise ratio, the cooperative time slot ALOHA method based on the acquisition effect proposed by the present invention improves the system peak throughput.

Description

technical field [0001] The invention belongs to the technical field of multiple access in a wireless communication network, and in particular relates to a cooperative (Cooperative) time slot ALOHA method. Background technique [0002] Due to the broadcast nature of the wireless channel, the data frame sent by a terminal can not only be received by the destination terminal, but also can be overheard by other nearby terminals. In cooperative communication, these terminals forward the received data frames to the destination terminal, so the destination terminal can receive multiple versions of a data frame (that is, a data frame is received after being transmitted through multiple independent channels), thus Gain diversity gain. For the time-slotted ALOHA method widely used in satellite communications, wireless sensor networks, and wireless cellular networks, people have also proposed specific cooperative communication schemes to improve their throughput. [1][2] . [0003] H...

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): H04W80/02
Inventor 郑迪陈尚法杨薇刘小飞严勇张恒飞
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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