1. IEEE 802.16m Network Reference Model, Functional Architecture, and Protocol Architecture
Document Number:
IEEE C802.16m-07/304r1
Date Submitted:
Source:
Ronny (Yong-Ho) Kim
Kiseon Ryu
Jin Sam Kwak
Suk Woo Lee
Minseok Oh
LG Electronics, Inc.
Re:
TGm Call for Contribution on SDD, IEEE m-07/040
Abstract :
Discussion on IEEE m network reference model, functional architecture, and protocol architecture in the m SDD
Purpose:
To adopt this proposal as a IEEE m network reference model, functional architecture, and protocol architecture in the m SDD
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2. Background (1/2)
IEEE m System Requirement Document specifies as follows;
IEEE m shall provide continuing support and interoperability for legacy WirelessMAN-OFDMA equipment, including MSs and BSs.
IEEE m shall provide the ability to disable legacy support.
IEEE m shall provide support for handover with other RATs. However, an IEEE m MS is not required to be multi-mode. IEEE m shall provide service continuity during handover for both inter-RAT and intra-RAT handover.
Based on these requirement, IEEE m network reference model and functional architecture shall be designed so as to provide the ability to enable/disable legacy support and to support inter-RAT and intra-RAT handover.

3. Background (2/2)
16m Network Reference Model is desirable to include the interface and reference point for both legacy support and disabled legacy support.
16m Network Reference Model is desirable to keep the NCMS for the network control and management to be consistent with the existing current 16 standard.
In case of legacy support, the interface between 16m MS and 16m BS should contains both legacy functions to be re-used, and the enhanced functions newly defined in 16m.

4. Proposed 16m Network Reference Model

5. Proposed Reference Point
Interface
Description U
Legacy MS - Legacy BS
Legacy Air Interface Um
16m MS - 16m BS
16m Air Interface I
Legacy BS - Legacy BS
Interface between Legacy BSs Im
16m BS - 16m BS
Interface between 16m BSs O
16m BS - Non Network
Interface between 16m BS and Non networks to support Inter-RAT HO
Note) The interface between 16m MS/BS and legacy BS/MS shall be defined as the same with the reference point U.
The interface between 16m BS and legacy BS shall be defined as the same with the reference point I.

6. Proposed Functional Architecture
• 16m Functions – Disabled Legacy Support : A set of functions of 16m MS/BS in a network where the legacy support is disabled
• 16m Functions – Legacy Support : A set of functions of 16m MS/BS in a network where the legacy support is enabled
Note) The 16m functions in the overlapped region are commonly used in both cases.

7. <Legacy Support>
Conceptual Approach
Enhanced system configuration/control information
Smooth Migration
<Legacy Support>
<Disabled Legacy Support>
FCH† / MAP† : Enhanced FCH/MAP for supporting m with legacy support
FCHnew/ MAPnew : New FCH/MAP for supporting m without legacy support
16m Zone #k : New permutation zone for m without legacy support

8. Overall Protocol Architecture
Main Functionalities per Layer

9. MAC Functionalities
MAC-Function Connectivity : High-Level View