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

Method for preventing access collision in radio communication system

A wireless communication system and access conflict technology, applied in wireless communication, electrical components, etc., to achieve the effect of taking into account fairness, reducing the probability of access failure, and improving the success rate of access

Inactive Publication Date: 2011-03-16
ZTE CORP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, when the continuity test is performed before the terminal access, the access probability judgment threshold is determined by comprehensively considering the system access channel load and the terminal access waiting time, so as to improve access fairness and access success rate

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
  • Method for preventing access collision in radio communication system
  • Method for preventing access collision in radio communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Take CDMA2000 as an example, please refer to figure 1 , the implementation steps of the present invention are as follows:

[0023] Step 110: the base station sends access channel load information to the terminal;

[0024] The base station determines the overload level of the current base station access channel according to the load of the last one or several access channel time slots, and sends it to the terminal through the paging channel. After receiving the overload level of the access channel, the terminal updates and saves this information ;

[0025] Step 120: The terminal determines the access probability decision threshold P of this persistence test according to the stored access channel overload level and access waiting time;

[0026] Assuming that the access channel overloa...

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 discloses a method for access of confliction into radio communication system, comprising the following steps that: a base station sends access channel load information to a terminal at specified times, then, the terminal receives the system access channel load information first when they are accessed into the base station and calculates to obtain the access probability threshold of the current persistent test in accordance with the access channel load information and the access waiting time n of the current terminals P(m,n); the terminal generates a probability RP of [0,1] which is compared with the access probability threshold P(m,n) to execute persistent test; finally, the terminal determines whether sending an access probe sequence in the present access time slot. The present invention comprehensively considers load situation of the system and the access waiting time of the terminal as well as fairness of access, and improves feel of users; the longer of the access waiting time, the greater of the access probability threshold of the terminal when the system load is specified, therefore the probability of access failure of the terminal caused by too long waiting time can be lowered and the access success ratio is increased.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method for avoiding access conflicts in a wireless communication system. Background technique [0002] In a wireless communication system, terminals access the system through a random access protocol and share reverse access channel resources to ensure that limited resources are fully utilized. [0003] Generally, a slotted ALOHA (Slotted ALOHA) protocol is used in a wireless communication system to implement a random access process. In this protocol, due to the randomness of the terminal access process, when more than two terminals initiate access in one access channel time slot, access conflicts will occur, resulting in the failure of this access. Theoretical deduction shows that when the arrival rate is 1, the normalized throughput rate of the slotted ALOHA protocol reaches the maximum value, which is 36.8%. As the arrival rate increases, the col...

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): H04W74/08
Inventor 孙云山杨宝国
Owner ZTE CORP
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