Text Proposals of PHY Control Structure for 16n Direct Communication IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE S802.16n-11/0072 Date Submitted: 2011-05-16 Source: Sungcheol Chang, Eunkyung Kim, Sungkyung Kim, Hyun Lee, Chulsik Yoon E-mail: scchang@etri.re.kr , ETRI ekkim@etri.re.kr Venue: Call for Comments on the 802.16n Amendment Working Document < 80216n-10_0049r1.pdf > Base Contribution: IEEE C802.16n-11/0072 Purpose: To be discussed and adopted by TG802.16n 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 >.

Introduction A set of contributions to meet key requirements from PPDR applications C802.16n-11/0071: Frame Structure and PHY Structure Distributed resource allocation for talk-around direct communication Narrowband signal transmission for service coverage extension C802.16n-11/0072: PHY Control Structure C802.16n-11/0073: MAC Control Operations

Channel Structure of Talk-around DC Synchronization Channel Synchronization among HR-MSs. The HR-MSs within the BS coverage provide synchronization to the HR-MSs out of the BS coverage. Contention Channel The HR-MSs exchange packets including resource sharing information with random access. Dedicated Channel The HR-MSs with resource information of dedicated channel exchange packets on the dedicated channel.

Synchronization Channel This channel provides synchronization among HR-MSs Fixed position and fixed size resources. Synchronization packets (preamble + ID) are transmitted with distributed transmission scheduling. The HR-MS decides to transmit the synchronization packet by itself. Preamble time of BS is propagated to the HR-MSs out of the service coverage. Synchronization hop counter

Contention Channel The channel provides random access and transmission of a fixed size packet. There are several slots parallel to each other. Content fields in the fixed size packet. Source ID Destination ID Unicast STID for unicast transmission Group multicast ID for multicast transmission Resource identification of a dedicated channel for closed users.

Dedicated Channel The HR-MSs share resource information. An HR-MS send a packet on the dedicated channel and the other MSs receive the packet. Unicast transmission or multicast transmission. The resource of a dedicated channel repeats every superframe (20ms). Circuit style resource usage to reduce control overhead. Voice packets with a period of 20ms. The resource management and PTT operation are done by management packets. No control and feedback channels are defined additionally.

Dedicated Channel To provide both narrowband and broadband signal transmissions Narrowband signal on 1/6 PRU resource for voice traffic High-data rate over multiple 1/6 PRU resources

Proposed text for 16n AWD See IEEE C802.16n-11/0072.doc to support talk-around direct communication from PPDR application A physical control structure Synchronization channel Contention channel Dedicated channel Narrowband signal transmission for voice traffic Broadband signal transmission for high-rate data application