1. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: Multi channel utilization for Layer 2 Routing
Date Submitted: 23 January, 2014
Source: Jaehwan Kim, Youngae Jeon, Sangsung Choi (ETRI), Kyuyong Lee(A2UICT), and Soo-Young Chang(SYCA)
Company: ETRI, A2UICT, SYCA
Address: 161 Gajeong-dong, Yuseong-gu, Daejeon, KOREA (ETRI)
28, Hwangsaeul-ro 200beon-gill, Bundang-gu, Sungnam-si, Gyeonggi-do, KOREA (A2UICT)
Voice: , FAX: ,
Re: []
Abstract: Introduce TMCTP for L2R
Purpose: Response to the IEEE TG10 call for interest
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
<author>, <company>

2. Multi-Channel Utilization
Multi-channel utilization may be useful to reduce collisions between coordinators and allow each cluster to have independent operations at the same time.
Need a scheme for easy synchronization among multiple channels.

3. Multi-Channel Utilization in 15.4m (1)
TMCTP in IEEE m
Internet
: Super PAN Coordinator (FFD)
: PAN Coordinators (FFD)
: Device (FFD or RFD)
PAN ID 1
PAN ID 2
PAN ID 3
PAN ID 4
PAN ID 5
WPAN Channel 2
WPAN Channel 3
WPAN Channel 5
WPAN Channel 4, 5*
WPAN Channel 1, 2*, 3*, 4*

4. Multi-Channel Utilization in 15.4m (2)
Device Types
SPC (Super PAN Coordinator):
FFD
DB access (direct or Indirectly) to obtain available TVWS bands and manage WPAN channels
PC (PAN Coordinator):
If PC is a relay coordinator, it has Channel Assignment/Management Capability.
Device:
RFD/FFD

5. Benefits of TMCTP
Provides an efficient beacon scheduling among coordinators (cluster headers) to facilitate multi-hop enabled WPAN operation.
Enables each cluster to operate independently at the same time.
Minimizes time to gather data from all descendants since TMCTP allows each cluster to concurrently gather data from its devices on different channels.
e.g., metering data in FAN
Provides a scheme for easy synchronization among multiple channels.

6. Additional Role of SPC Global Synchronization Signal Provider
Can perform master role based on IEEE 1588
Using Beacon frames transmission/reception during the BOP(Beacon Only Period)
Provides accurate timing to PAN
Because of using MAC/PHY-layer Time Stamping mechanism (not Application-level Time Stamping)
Master
Slave t1
Sync t2
Follow_Up t1
Delay_Req t3 t4
Delay_Resp t4

7. Summary Multi-channel utilization for Layer 2 Routing TMCTP
Useful to reduce collisions between coordinators and allow each cluster to have independent operations at the same time
TMCTP
Provides an efficient beacon scheduling
Enables each cluster to operate independently at the same time
Provides a scheme for easy synchronization among multiple channels
Global synchronization signal provider
Additional role of SPC in TMCTP
Provides global timing
Synchronizes PANs

8. Thank You!