Report of the Handover Rapporteur Group Session 55

Report of the Handover Rapporteur Group, Session #55 Macau Document Number: C 802. 16 maint-08/234 r 3 Date Submitted: 2008 -05 -12 Source: Stavros Tzavidas Motorola* Voice: E-mail: stavros. tzavidas@motorola. com *<http: //standards. ieee. org/faqs/affiliation. FAQ. html> Venue: Report of the Handover Rapporteur Group for session #55 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/sect 6 -7. html#6> and <http: //standards. ieee. org/guides/opman/sect 6. html#6. 3>. Further information is located at <http: //standards. ieee. org/board/pat-material. html> and <http: //standards. ieee. org/board/pat >.

Summary • 22 comments relevant to the charter of the HO Rapporteur Group • Main themes: – Handover Delay – Load Balancing – Other: • HO preparation • DSx transactions interrupted by HO and service flow parameter modification during HO • Inter-bandwidth HOs • Miscelaneous

List of relevant comments • HANDOVER DELAY – – – • LOAD BALANCING – – – • 3029 (C 802. 16 maint-08/016): Proposal for reducing delay during HO. 3142 (C 80216 maint-08_107): Proposes a new method for updating TEKs during a HO 3136 (C 80216 maint-08/085): Proposes to include the details of the uplink allocation for RNG-REQ in BSHO-RSP while the MS is still connected to the S-BS 3128 (C 802. 16 maint-08/003): Proposes a new way for mutual identity verification during HO. 3164 (C 802. 16 maint-08/002): Proposes a new method for updating TEKs during a HO 3166 (C 802. 16 maint-08/194): Proposes a new method for updating TEKs during a HO 3066, 3135, 3137 (C 802. 16 maint-08/013) This is the contribution that was close to harmonization in the last f 2 f meeting 3067 (C 802. 16 maint-08/199) refers to contribution OTHER DSx transactions interrupted by HO and service flow parameter modification during HO – 3143 (C 802. 16 maint-08/135): Changes to CID Update TLV in RNG-RSP to indicate to the MS the outcome of DSx transactions that were interrupted by a HO. – 3108 (C 802. 16 maint-08/172): alternative solution to 3143, inform MS about the status of DSx transactions when HO is initiated. – 3147(N/A): Attempts to resolve conflicting requirements in the standard for the case that the T-BS wants to change service flow parameters during a HO. Apparently the standard instructs the target BS to do the update both through DSC-REQ after completion of HO and CID Update TLV. HO preparation – 3109 (C 802. 16 maint-08/207): Proposes some corrections for the procedure when MS rejects the target BSs proposed by the network and indicates a different target BS in HO-IND – 3138(C 802. 16 maint-08/208): Proposes what the MS should do when it receives a BSHO-REQ with no T-BS included. – 3139 and 3140 (C 80216 maint-08/0175): Clarify how the BS should set the “action time” parameter when it includes multiple BSs in BSHO-REQ/RSP – 3141 (C 802. 16 maint-08/106): Propose different ways of handling the error scenario when HO-IND with “cancel” indication is lost and never received by the serving BS – 3146 (N/A): Clarifies the meaning of bit #6 in HO process optimization Inter-bandwidth HOs – 3301 (C 80216 maint-08_086): Provides clarifications needed for performing inter-bandwidth handovers between 5 and 10 MHz bandwidths Miscelaneous – 3144 (C 802. 16 maint-08/204): Defines the sleep and scanning termination details for HO operations – 3061(C 802. 16 maint-08/59): Proposes to include network authenticator identifier in RNG-REQ message to allow the network to authenticate the MS faster with minimacl network signalling overhead

Harmonization / F 2 F Activity • Group close to harmonized solution in some topics, while on-going discussion in other topics, with varying progress – HO delay reduction – Load balancing • Face-to-face time during meeting to continue group’s activities – In conjunction with other rapporteur groups and with 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