Report of the Handover Rapporteur Group Document Number: C802.16maint-08/152 Date Submitted: 2008-03-17 Source: Stavros Tzavidas Voice: Motorola* E-mail: stavros.tzavidas@motorola.com *<http://standards.ieee.org/faqs/affiliationFAQ.html> Venue: Report of the Handover Rapporteur Group as requested in IEEE 802.16maint-08/005r1 Base Contribution: Purpose: For information Notice: This document does not represent the agreed views of the IEEE 802.16 Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who 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 802.16. Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: <http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and <http://standards.ieee.org/guides/opman/sect6.html#6.3>. Further information is located at <http://standards.ieee.org/board/pat/pat-material.html> and <http://standards.ieee.org/board/pat >.

Group Activities 15 comments relevant to the charter of the HO Rapporteur Group Main themes: Load Balancing Handover Delay, Preparation and Execution Other: Network context retrieval during MS network re-entry Lost MAC Management messages during HO preparation MS rejection of HO target BS and proposal of different target BSHO-REQ with no target BS specified – expected MS behavior

List of relevant comments LOAD BALANCING Comment 2065 HANDOVER DELAY, PREPARATION and EXECUTION Comments: 2061, 2073, 2088 (all on HO delay), 2071 (HO preparation), 2170 (on DSx transactions), 2245 (lost RNG-REQ during HO execution) OTHER Comments 2025, 2026, 2048, 2067, 2068, 2069, 2070,, 2097 2025, 2026: network context retrieval during MS network re-entry 2048: MS proposing alternate target BS after HO rejection 2068: BSHO-REQ with no target BS specified 2067, 2069, 2070: loss of HO preparation messages 2097: clarification of “cashed AK”

Harmonization / F2F Activity Group close to harmonized solution in some topics, while on-going discussion in other topics, with varying progress Load balancing: one comment (down from 7 in last meeting) Comment 2068, 2070 and 2025, 2026 are under on-going harmonization Most harmonization, so far, outside email reflector Face-to-face time during meeting to continue group’s activities In conjunction with other rapporteur groups and with main maintenance group so that those with overlapping interests can cover multiple meetings. If you don’t see your comment and you believe it falls within the charter of HO rapporteur group, then see me (Stavros) or email stavros.tzavidas@motorola.com