1. doc.: IEEE 802.15-<doc#>
<11 January, 2008r>
doc.: IEEE <doc#>
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Channel Hopping Over Superframe ]
Date Submitted: [11 May, 2008]
Source: [Jie Shen, Daoyuan Yao, Tao Xing, Liang Li] Company [Shanghai Institute of Micro-system and Information Technology, Vinno Technologies Inc.]
Address [NO.865 Changning Road, Shanghai, , China]
Voice:[ ], FAX: [ ],
Re: [IEEE e group]
Abstract: [This document suggests a new solution adopting channel hopping over superframe to provide additional robustness in high interfering environments and enhance coexistence with other wireless networks]
Purpose: [To promote discussion in IEEE e Study Group]
Notice: This document has been prepared to assist the IEEE P It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P
Jie Shen, Daoyuan Yao, Tao Xing, Gu Ning
<author>, <company>

2. <11 January, 2008r>
doc.: IEEE <doc#>
Objectives
To provide additional robustness in high interfering environments
To enhance coexistence with other wireless networks and enable longer operational life for battery powered devices
To smoothly switch over multi-channel without strict restriction on RF circuit
To facilitate the co-existence with current MAC devices
To be flexible and scalable
Slide 2
Page 2
<author>, <company>

3. doc.: IEEE 802.15-<doc#>
<11 January, 2008r>
doc.: IEEE <doc#>
Motivation
The communication on one channel is easy to be interfered
Interference exists among adjacent PANs in open environment
Outgoing beacons and incoming beacon may collide if StartTimes are approximately at same time
<author>, <company>

4. Modification Suggestion
<11 January, 2008r>
doc.: IEEE <doc#>
Modification Suggestion
Reducing interference among adjacent PANs by multi-channel hopping with pseudo-random hop sequence on every superframe
Beacons from coordinators are broadcasted on same channel which is specified by PAN Coordinator as a PAN being initialized
Modifying the association primitive in order to support channel hopping and avoid beacon collision
<author>, <company>

5. Channel Hopping on every Superframe
Avoiding adjacent PANs collision through multi-channel hopping
A,B,C represents new PAN coordinator

6. Beacon Collision Avoiding
Avoid beacons collision through slot multiplex

7. doc.: IEEE 802.15-<doc#>
<11 January, 2008r>
doc.: IEEE <doc#>
7 May, 2008
Thank you!
SIMIT
<author>, <company>