Unlock instant, AI-driven research and patent intelligence for your innovation.

Full-duplex cache relay system multi-user scheduling method and system

A multi-user scheduling and relay system technology, applied in the field of multi-user scheduling of full-duplex cache relay system, to achieve high performance and improve throughput

Inactive Publication Date: 2020-07-14
SHANGHAI JIAOTONG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional wireless communication technology can only realize that the transceiver of wireless communication equipment can send and receive signals in orthogonal time slots or frequency bands.

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
  • Full-duplex cache relay system multi-user scheduling method and system
  • Full-duplex cache relay system multi-user scheduling method and system
  • Full-duplex cache relay system multi-user scheduling method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The relay is known to have a fixed transmit power at the node, which is P 1i ,P 2i . The relay is based on the known channel fading distribution f 1i (h), f 2i (h) with additive Gaussian white noise variance σ 1i , σ 2i , to calculate the selection parameter λ i . Then, the relay is based on the known instantaneous channel fading h 1i ,h 2i , to achieve multi-user scheduling.

[0059] 1. Each user registers resource request information with the relay node. The relay node obtains the number N of user pairs, and divides the cache area, and forms N cache queues corresponding to N pairs of users, with limited capacity and an initial length of B i =0.

[0060] 2. Channel estimation. The relay broadcasts the pilot signal to each household. The relay estimates the channel parameters and obtains the channel fading distribution f 1i (h), f 2i (h).

[0061] 3. The relay acquires system parameters. The relay obtains the sending power P of the node 1i ,P 2i , wit...

Embodiment 2

[0078] The transmission power of the node is variable, that is, P 1i ,P 2i It is distributed by the relay during the operation of the system. The two links corresponding to the i-th pair of users, S i -R, R-D i The upper limit of the sum of power averages is P i (The relay is known before the system officially runs). The relay is based on the known channel fading distribution f 1i (h), f 2i (h) with additive Gaussian white noise variance σ 1i , σ 2i , to calculate the selection parameter λ i . Then, the relay is based on the known instantaneous channel fading h 1i , h 2i , to achieve multi-user scheduling.

[0079] 1. Each user registers resource request information with the relay node. The relay node obtains the number N of user pairs, and divides the cache area, and forms N cache queues corresponding to N pairs of users, with limited capacity and an initial length of B i =0.

[0080] 2. Channel estimation. The relay broadcasts the pilot signal to each househo...

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 provides a multi-user scheduling method and system for a full-duplex cache relay system, including: the relay node obtains the number N of user pairs according to the user's registration resource request information, and divides the cache area, corresponding to N pairs of users Form N buffer queues, the capacity of the buffer queue is limited, and the length is B i The initial value is 0; the relay node broadcasts the pilot signal to each user, estimates the channel parameters, and obtains the channel fading distribution; the relay node obtains the upper limit of the transmission power of each pair of users or the average value of the transmission power, and the additive Gaussian white noise variance σ 1i , σ 2i ; Calculate the selection coefficient; perform user scheduling according to the calculated selection coefficient. The invention solves the buffer queue scheduling problem in the multi-user environment in the full-duplex band buffer relay communication system, effectively utilizes the multi-user diversity gain of the system, can fully utilize the function of the buffer, and greatly improves the throughput of the system.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and system for multi-user scheduling of a full-duplex buffer relay system based on instantaneous state information. Background technique [0002] Full-duplex antenna technology is one of the key technologies for improving spectrum efficiency in future communication systems. Traditional communication systems all work in a half-duplex state, such as Time Division Duplex (TDD) and Frequency Division Duplex (FDD) adopted by the latest fourth-generation 4G wireless communication system. The half-duplex mode implements self-interference cancellation through the orthogonality of time slots or frequency bands, but there is a problem of low spectral efficiency. In order to achieve a 1000X increase in transmission rate and system capacity, the next-generation 5G wireless communication system must work in a wider frequency band. The gradual scarcity of spectrum resources pu...

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): H04W72/12H04W52/46
CPCH04W52/46H04W72/542
Inventor 胡丕河李成夏斌
Owner SHANGHAI JIAOTONG UNIV