A Framework for HR-MS to HR-MS Direct Communication without Infrastructure Stations
Document Number:
IEEE S802.16n-10/0008
Date Submitted:
2011-03-12.
Source:
Haiguang Wang, Hoang Anh Tuan, Jaya Shankar,
Shoukang Zheng, Yeow Wai Leong,
Joseph Teo Chee Ming, Mar Choong Hock
Institution for Infocomm Research (I2R)
1 Fusionopolis Way, #21-01, Connexis (South Tower)
Singapore 138632
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E-mail:
+65 6408 2256
haiguang.wang@gmail.com
Re:
Call for contributions for 802.16n AWD
Base Contribution:
IEEE C802.16n-10/0008
Purpose:
To discuss and adopt the proposed text in the 802.16n draft Text
Notice:
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Abstract
• In this contribution, we propose a framework
for the HR-MSs communicate to each in case
there is no infrastructure station such as HRBS or HR-RS presented in the network.
System Requirement
Usage Scenario
Communication Modes
• Two communication modes
– Infrastructure mode
– Ad Hoc Mode
Ad Hoc Mode
• Three system states
– Initialization state: set node to ad hoc mode
– Discovery state: find other HR-MSs or HR-MS networks in vicinity
and broadcast information of current node.
– Communication state: the HR-MS associates to an HR-MS networks.
It now can communicate to other nodes within the network
Initialization
Discovery
Communication
Functionalities of Coordinators
• Coordinator
–
–
–
–
Transmit frame preambles regularly.
Accept network association and de-assoication.
Manage the radio resource.
Schedule the data transmission.
Summary
• In this contribution, we propose a framework
for 802.16n HR-MSs in setting up HR-MS
direct communication network by themselves
without turning any node into base station or
relay station.
Proposed Text
• 17.1 Overview
An HR-MS should be able to work in two
communication modes, infrastructure mode or ad hoc
mode. In infrastructure mode, it can only transmit
when it synchronization to an infrastructure stations
such as HR-BS or HR-RS. In ad hoc mode, an HRMS is allowed to transmit information before it
synchronizes to any other HR stations.
Proposed Text
17.2.2.1 A Framework for the Direct communication between HR-MSs in ad hoc mode
In ad hoc mode, an HR-MS can be in three states as following Figure shows.
• Initialization state: initialize the system for ad hoc mode.
• Discovery state: only transmit node configuration information from time to time.
• Communication state: setup communication links with other HR-MS and transmit
data to each other.
Initialization
Discovery
Figure XXX: State machine for HR-MS in Ad Hoc Mode
Communication
Proposed Text
During the initialization for HR-MS direct communication without
infrastructure, HR-MS should set its working mode as ad hoc mode.
After initialization, HR-MS should listen to channel first. It should check
whether there are other HR-MSs or HR-MSs networks formed by HR-MSs
in the same area. The HR-MS should transmit some node information to let
other HR-MSs know its existence.
For the HR-MSs to communicate each other, a HR-MS network should be
setup first. One of HR-MS should play the role of coordinator. The
functionality of coordinator is to transmit frame preambles and DL/UL
MAP regularly, manage the node association and leaving, mange the radio
resource etc.