Downlink resource allocation algorithm based on channel fluctuation perception under LTE system

A resource allocation and channel technology, applied in wireless communication, electrical components, etc., can solve problems such as not considering user channel fluctuations, only considering user instantaneous channel quality, missing, etc., to improve system throughput and user video experience Effect

Active Publication Date: 2017-09-22
XI AN JIAOTONG UNIV
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current scheduler is still flawed
Existing scheduling algorithms only consider the user's instantaneous channel quality when performing resource allocation, and do not consider the user's channel fluctuat

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
  • Downlink resource allocation algorithm based on channel fluctuation perception under LTE system
  • Downlink resource allocation algorithm based on channel fluctuation perception under LTE system
  • Downlink resource allocation algorithm based on channel fluctuation perception under LTE system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0049] The present invention will be further described in detail below in conjunction with specific implementations, which are to explain rather than limit the present invention.

[0050] see figure 1 , the downlink resource allocation algorithm for sensing channel fluctuation under the LTE system provided by the present invention includes the following operations:

[0051] 1) In the current scheduling time slot, for the RB to be allocated, count the channel quality CQIs of the first N (such as 1000) scheduling time slots of each user up to the current time slot on the RB, and calculate the top N (such as 1000) of each user. The maximum value, the minimum value and the average value of the CQI on the RB for the time slots;

[0052] 2) Use the maximum value, minimum value and average value of the CQI on the RB for the first N (eg 1000) time slots of the user obtained in step 1), and calculate the channel fluctuation impact in combination with the CQI of the current scheduling ...

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 downlink resource allocation algorithm based on channel fluctuation perception under an LTE system. The algorithm is characterized by, to begin with, summarizing channel fluctuations of each user in a current RB to be allocated, and with current channel quality status of the user being combined, calculating a channel fluctuation influence factor phi; multiplying a dispatching index obtained based on a classical resource allocation algorithm by the channel fluctuation influence factor to obtain a dispatching index of the resource allocation algorithm based on channel fluctuation perception; allocating the RB to the user, the dispatching index of which is largest, and if residual transmission data of the user is not greater than transmission capacity of the RB, deleting the user from a dispatching queue after finishing RB allocation; and carrying out RB allocation one by one, and if the current time slot has no data to be transmitted, allocating the residual RB according to MAX C/I. The downlink resource allocation algorithm is based on the classical resource allocation algorithm and takes the user channel quality fluctuations into consideration, and thus system throughput and user video experience in the LTE system can be improved effectively.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a downlink resource allocation algorithm for channel fluctuation perception in an LTE system. Background technique [0002] With the continuous improvement of wireless access rate, the types of mobile communication services gradually evolve from pure voice and common data services to rich multimedia services, mainly video services. The more complex business structure requires great changes in network performance, requiring the underlying network to provide higher communication rates and smaller transmission delays. Therefore, under the premise of limited resources, effective resource allocation among multiple users to increase system throughput and improve user video experience has become a research hotspot. [0003] At present, the more classic wireless resource allocation methods include: RR (Round Robin, polling) algorithm, MAX C / I (Maximum Carrier to Interferenc...

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): H04W72/12
CPCH04W72/1273H04W72/542
Inventor 王静刘贵忠贺丽君陈雨辰邓瑞
Owner XI AN JIAOTONG UNIV
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