Extended header for piggybacked bandwidth request (P80216m/D1-15. 2. 2 Document Number: IEEE C802.16m-09_1761 Date Submitted: 2009-08-27 Source: Yi-Ting Lin, Tsung-Yu Tsai, Jiun-Je Jian, Chun-Yen Hsu, Youn-Tai Lee E-mail: eating@nmi.iii.org.tw Institute for Information Industry (III) Venue: Base Contribution: N/A Re : P802.16m/D1 Purpose: Discussion and approval of the proposal into the IEEE P802.16m/D1 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 802.1 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 >.

Introduction Piggybacked bandwidth request is used by the AMS to request for bandwidth for the same or different connection, to which the user data in the MAC PDU is mapped to. Piggybacked bandwidth request is carried in the extended header. While it is lack of the extended header in P802.16m/D1.

Piggybacked bandwidth request types Piggybacked bandwidth request shall have the following types: PBR for the same flow PBR for different flow Only one flow Multiple flows

Piggybacked bandwidth request for the same flow Syntax Size (bit) Notes PBR(){ LAST 1 Last Extended Header indication: 0 = one or more extended header follows the current extended header unless specified otherwise; 1 = this extended header is the last extended header unless specified otherwise Type TBD PBR for the same flow Request type 0:aggregate, 1:incremental BR size 11 Amount of bandwidth requested Reserved variable Shall be set to zero }

Piggybacked bandwidth request for different flow Syntax Size (bit) Notes PBR(){ LAST 1 Last Extended Header indication: 0 = one or more extended header follows the current extended header unless specified otherwise; 1 = this extended header is the last extended header unless specified otherwise Type TBD PBR for different flow PBRI PBR index 0: PBR for the other one flow 1: PBE for the other flows If (PBRI == 0) { FID 4 Flow identifier BR size 11 Amount of bandwidth requested } If (PBRI == 1) { N 3 Number of flows For (i=0; i<N; i++) { Request type 0:aggregate, 1:incremental Reserved variable Shall be set to zero

Proposed Text [Insert the following section 15.2.2.2.x “piggybacked bandwidth request extended header”] 15.2.2.2.x Piggybacked bandwidth request extended header (PBREH) PBREH shall be used when the AMS performs piggybacked bandwidth request. There are two types of PBR which are PBR for the same flow, and PBR for different flow. Tables xxx and Table yyy are formats for the two types.

Table xxx — PBREH format for PBR for the same flow Syntax Size (bit) Notes PBR(){ LAST 1 Last Extended Header indication: 0 = one or more extended header follows the current extended header unless specified otherwise; 1 = this extended header is the last extended header unless specified otherwise Type TBD PBR for the same flow Request type 0:aggregate, 1:incremental BR size 11 Amount of bandwidth requested Reserved variable Shall be set to zero }

Table yyy — PBREH format for PBR for different flow Syntax Size (bit) Notes PBR(){ LAST 1 Last Extended Header indication: 0 = one or more extended header follows the current extended header unless specified otherwise; 1 = this extended header is the last extended header unless specified otherwise Type TBD PBR for different flow PBRI PBR index 0: PBR for the other one flow 1: PBE for the other flows If (PBRI == 0) { FID 4 Flow identifier BR size 11 Amount of bandwidth requested } If (PBRI == 1) { N 3 Number of flows For (i=0; i<N; i++) { Request type 0:aggregate, 1:incremental Reserved variable Shall be set to zero

Table 658—Description of Extended Header Types Names Description - Fragmentation and packing extended header See 15.2.2.2.1 TBD Fragmentation extended header Multiplexing extended header See 15.2.2.2.4 Sleep Control extended header See <<15.2.3.x>> Piggybacked bandwidth request extended header for the same flow See 15.2.2.2.x Piggybacked bandwidth request extended header for different flow