Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Multilevel random accessing method based on packet

A technology of random access and random access process, which is applied in access restriction, broadcast service distribution, wireless communication, etc., can solve problems such as strong intensity, network performance deterioration, and collision, so as to increase the probability of random access and satisfy Real-time requirements and the effect of reducing the probability of conflict

Inactive Publication Date: 2010-04-14
HUAZHONG UNIV OF SCI & TECH
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, each mobile station will send data as soon as it has data. It will go its own way without a unified command. When there are many random access data packets, serious collisions will occur, causing strong noise, and the network performance will deteriorate sharply.

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
  • Multilevel random accessing method based on packet
  • Multilevel random accessing method based on packet
  • Multilevel random accessing method based on packet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0039] Such as figure 1 As shown, the base station 010 sets several groups 20.1, 20.2, ..., 20.n for selection by the mobile station, so that each mobile station in the wireless access network belongs to a group, and each group corresponds to a group number. For example, group 20.1 includes mobile stations 1.1,...,1.m, group 20.2 includes mobile stations 2.1,...,2.j,..., group 20.n includes mobile stations n.1,...,n.k , where m, n, k, j represent arbitrary integers, and they can take the same value or be different. hereinafter referred to as "the network" or "the entire network" figure 1 single-cell wireless access network.

[0040] Such as figure 2 As shown, the present invention is carried out between the above-mentioned base station and mobile station, and each time the system starts the random access process, it includes the first-level random acc...

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 method comprises: dividing the mobile stations desired to access the network into several groups; through two random access stages, the mobile station accesses the network; in first stage random access stage, the base station is only permitted to send group number signals; according to the group access state, the base station sets one of groups as 'currently active group, and instructs the mobile station in the group to enter into the second random access stage, and instructs the other groups not content use the backward random access channel. In the second stage, the mobile station in thecurrent active group sends the random access signals, until successfully accessing the network or the access process is stopped by base station; when the access process is stopped, the base station sets another group to enter into second stage.

Description

technical field [0001] The invention belongs to the technical field of random access of data link layer protocols in a wireless communication system, and in particular relates to a multi-level random access method based on grouping. Background technique [0002] Random access is a process in which a mobile station requests access to the system. Random access can be used not only for the first access of the mobile station, to support call initiation, but also for services such as paging response, registration, short message and burst data transmission. The random access protocols of the existing mobile communication systems all use the ALOHA random access technology, but there are differences in the ALOHA of different systems. [0003] The characteristic of random access is that each user can send information randomly according to their own wishes, and there is only one common channel. As long as the frames they send have a little overlap in time, collisions will occur. The...

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): H04W4/08H04W48/10H04W74/08
Inventor 刘建朱光喜王玲罗力平
Owner HUAZHONG UNIV OF SCI & TECH
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
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