1. Source: [Pei Liu ] Company: [Hisilicom Technology Co. Ltd. ]
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [The Difference on MAC Layer between Chinese WPAN and IEE ]
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 ]
Voice:[ ], ]
Re: [ IEEE 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 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
Submission
Pei Liu Hisilicon, Inc.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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
Submission
Pei Liu Hisilicon, Inc.

8. 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.