Liaison Request from TIA TR-41.4 May 2006 doc.: IEEE 802.11-06/0xxxr0 May 2006 Liaison Request from TIA TR-41.4 Date: 2006-05-17 Authors: Notice: This document has been prepared to assist IEEE 802.11. 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 grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures <http:// ieee802.org/guides/bylaws/sb-bylaws.pdf>, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair <stuart.kerry@philips.com> as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at <patcom@ieee.org>. Steve Whitesell, TIA TR-41 Steve Whitesell, TIA TR-41

May 2006 doc.: IEEE 802.11-06/0xxxr0 May 2006 Abstract This is a summary of the liaison request from TIA TR-41.4 contained in IEEE 802.11-06/0557r0. It seeks information on whether 802.11 has mechanisms in place to support admissions control and prioritization requirements necessary for emergency calls from VoWLAN phones. Steve Whitesell, TIA TR-41 Steve Whitesell, TIA TR-41

TIA Standard on VoWLAN Phones May 2006 TIA Standard on VoWLAN Phones Currently under development by Subcommittee TR-41.4, IP Telephony Infrastructures. Includes requirements on admission control and prioritization for voice calls. Must be able to support high priority for emergency calls. Considering introduction of prioritized call signalling at layer 2 (e.g., specific information about priority call level in the ADDTS request). Steve Whitesell, TIA TR-41

TR-41.4 Admission Control and Prioritization Requirements May 2006 TR-41.4 Admission Control and Prioritization Requirements Multiple priorities on voice call access for the ability to prioritize these calls at the MAC level (EDCA or HCCA) Bandwidth reservation for the prioritized voice calls to guarantee that any emergency calls established by the VoWLAN phone will be granted by the AP Pre-emption of any existing lower priority voice call at the AP level in order to establish the new higher priority call Ability to establish an emergency call from a VoWLAN phone even if the phone is not authenticated or associated Steve Whitesell, TIA TR-41

May 2006 Questions for 802.11 Do 802.11 standards currently have all necessary mechanisms defined to support desired TR-41.4 admission control and prioritization requirements? If not, what capabilities are missing? Is there a projected roadmap and time frame for getting there? Steve Whitesell, TIA TR-41

May 2006 Contact Information TR-41.4 Chair: TR-41 Chair: Joanne McMillen Steve Whitesell Avaya, Inc. VTech Communications +1 303 538 4060 +1 732 751 1079 joanne@avaya.com swhitesell@vtech.ca IEEE 802.11/TIA Liaison: Ariel Sharon Motorola +1 847 576 3403 ariel.sharon@motorola.com Steve Whitesell, TIA TR-41

References 11-06/0557r0-liaison-letter-from-tia-tr41-4.doc May 2006 Steve Whitesell, TIA TR-41