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

Solution method of virtual grouping conflict based on multi-step signal channel booking

A technology of channel reservation and virtual grouping, which is applied in the field of communication and can solve problems such as poor performance and large amount of computation

Inactive Publication Date: 2010-06-09
NORTHWESTERN POLYTECHNICAL UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the disadvantages of large amount of computation and poor performance in the prior art, the present invention proposes a virtual packet conflict resolution method suitable for multi-step channel reservation methods

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
  • Solution method of virtual grouping conflict based on multi-step signal channel booking
  • Solution method of virtual grouping conflict based on multi-step signal channel booking
  • Solution method of virtual grouping conflict based on multi-step signal channel booking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Method example:

[0045] When the communication terminal is in the state of sending packets:

[0046] Assuming that two-step channel reservation is adopted, at time k the channel reservation window of sending terminal A, the current time slot position pointer and the states of the two backoff counters are as follows: figure 1 shown.

[0047] Step 1: Generate the initial value of the backoff counter.

[0048] Suppose at time k, there is no sending terminal on the channel to send packets. According to the regulations of IEEE 802.11DCF, after 20 μs (that is, after the time of one idle time slot), the system enters a new time slot, that is, the corresponding entry time k+1. At time k+1, the status of the channel reservation window, the current time slot position pointer and the two backoff counters of the sending terminal A are as follows: figure 2 shown. The position pointer of the current time slot points to the position of the next time slot (that is, the position ...

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 virtual grouping conflict solving method based on multi-step channel subscription, with the following steps that when a communication terminal is under the sending grouping state, a plurality of idle time slots are arranged at the front part and back part of the subscripted time slots; namely when a sending terminal performs the time slot subscription, the sending terminal ensures that the subscripted time slots of a channel are free, and both the p larger than zero time slots on the front face and the p larger than zero time slots on the back face of the idle time slots are free; when the communication terminal is under the monitoring channel state, the virtual conflict is detected and the blench is performed through the method of subscripting the protective timeslots. Considering the aspect of realizing the complexity and the operand, the method has obvious advantages and better practicability.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for solving packet conflicts in a wireless local area network. Background technique [0002] The current IEEE 802.11 standard has become a recognized international standard for wireless LAN access technology. Two kinds of multiple access protocols are mainly defined in the IEEE802.11 standard: one is the distributed coordination function (DCF), and the other is the point coordination function (PCF). DCF is a multiple access standard widely used in the industry. DCF is a multiple access random access strategy based on carrier sense and collision avoidance mechanism. [0003] With the rapid development of technology, wireless LAN technology based on IEEE 802.11 has been widely used in recent years. On the one hand, as more and more users use this technology, the spectrum resources of the working frequency band of IEEE 802.11 wireless LAN become more and more tight...

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): H04L12/56H04W84/02H04W24/02
Inventor 李波
Owner NORTHWESTERN POLYTECHNICAL UNIV