Source: [Pei Liu ] Company: [Hisilicom Technology Co. Ltd. ] Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [The Difference on MAC Layer between Chinese WPAN and IEE802.15.4-2006 ] Date Submitted: [May. 2007] Source: [Pei Liu ] Company: [Hisilicom Technology Co. Ltd. ] Address: [Nan Tian Bld., No.10 Xinxi. Rd Shang-Di Information Industry Base, Hai-Dain District, Beijing,China 100085 ] Voice:[86-10-82829011], E-Mail:[liupei@hisilicon.com ] Re: [ IEEE 802.15 SG4c ] Abstract: [Description the major different on MAC Layer between IEEE802.15WG and Chinese WPAN WG] Purpose: [To encourage discussion.] Notice: This document has been prepared to assist the IEEE P802.15. 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 P802.15. Submission Pei Liu Hisilicon, Inc.

The Promoted Communication Tech in LR-WPAN(1) Non-persistent CSMA/CA algorithm: The CSMA/CA algorithm in WPAN is similar to non-persistent CSMA. It’s feasible to apply np-CSMA for analyzing the WPAN CSMA/CA processing and confirming the throughput on WPAN. Large reduction of the complexity of CAP analysis Much accuracy CCA assessing with low complexity, based on the new communication model on one channel Much accuracy evaluation of throughput in consideration of timeout. Submission Pei Liu Hisilicon, Inc.

The Promoted Communication Tech in LR-WPAN(2) Distributed CAP scheme for: The channel model within CAP, And The performance of network throughput, and Efficiency of total energy utilization of network Submission Pei Liu Hisilicon, Inc.

The Promoted Communication Tech in LR-WPAN(3) Extend-Superframe: Let energy-unlimited device to utilize INACTIVE period of the superframe for improving the throughput; Extend-GTS: A more flexible way to use GTS which makes the devices can communication with each other within one GTS for reducing latency and jitter. Submission Pei Liu Hisilicon, Inc.

The Promoted Communication Tech in LR-WPAN(4) Node A and B share one GTS Nodes A、B and C share 2 GTS 1、GTS requirement format includes the features of service 2、GTS be assigned based on resource and GTS requirement Submission Pei Liu Hisilicon, Inc.

The major MAC modification on Chinese WPAN(4) GTS requirement format expanded Where GTS characteristics to be expanded to 3 octet for service features Submission Pei Liu Hisilicon, Inc.

The Promoted Communication Tech in LR-WPAN(4) Improve flexibility to construct superframe and GTS. Improve the utilization efficiency of resource because of GTS shared Throughput to be improved based on the more fully utilization of resource. Improved flexibility supply some potential applications for LR-WPAN. Only modifying the GTS requirement format, so it keeps the compatibility with 15.4-2006. Submission Pei Liu Hisilicon, Inc.

The Promoted Communication Tech in LR-WPAN(5) The security may be considered on MAC in CWPAN. However, more details will be defined later. Submission Pei Liu Hisilicon, Inc.