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In response to the SEC chair's request that we work toward defining unique identities of the two mobility PARs, I would like to suggest the following.
The 802.16 Study Group has the charter of allowing the evolution of 802.16 compliant systems toward supporting mobility. To that end it would appear logical that changes to the PHY and MAC be fully backward compatible with the existing specification and that no a priori statement be made about the station speed that can be supported by such a system. I would like to suggest that the PAR therefore focus on these aspects and that the project scope be described as:
To amend the 802.16 standard to support combined fixed and mobile operation from within a single system. The extension will address PHY and MAC changes, that are fully backward compatible, while supporting mobile subscriber operation and roaming between 802.16 base-stations or their sectors. This amendment will allow high spectral efficiency (3~4 bits/s/Hz), macrocell sizes and NLOS operation.
The ECSG PAR's objective, on the other hand, is to develop a standard that is optimized for broadband wireless data mobility without any a priori assumptions about the technologies used to realize that objective. The PAR, therefore, states the design objective of developing a spectrally efficient solution that will support mobility classes up to 250 Km/h. I believe that there are no changes required in the wording of that PAR.
In essence we then have two PARs with, one addressing the need for a solution optimized for full vehicular mobility and the other the need for extending the capabilities of 802.16 systems to support a level of mobility.
This is a new proposal that I believe should allow the SEC to approve both PARs. I am copying the two mobility groups in order to get their reaction to this proposal and see if they will agree to such PARs. If this is acceptable we could formally revise the PAR on Monday or Tuesday and approach the SEC on Friday with a consensus position.
Chair - MBWA-ECSG
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