Reliable and Efficient Transmission to M2M Device Groups Document Number: IEEE S802.16p-10/0002 Date Submitted: 2010/11/01 Source: Hung-Yu Wei, Ching-Chun Chou E-mail: hywei@cc.ntu.edu.tw National Taiwan University (NTU) Yan-Xiu Zheng E-mail: zhengyanxiu@itri.org.tw ITRI *<http://standards.ieee.org/faqs/affiliationFAQ.html> Re: CfC: SRD of the IEEE 802.16p Mobile-to-Mobile (M2M) Base Contribution: IEEE C802.16p-10/0002 Purpose: To be discussed and adopted in the 802.16p M2M SRD 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. Copyright Policy: The contributor is familiar with the IEEE-SA Copyright Policy <http://standards.ieee.org/IPR/copyrightpolicy.html>. 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 >.

M2M Applications M2M applications include [2] Smart metering Health monitoring Vehicular Maintenance Some application cases & related requirements Simultaneous transmissions of different traffics Devices with limited power High reliability transmission

Simultaneous Transmission of Different QoS Traffics M2M devices may be transmitting traffics of different QoS requirements. Smart metering Power outage notification User electricity consumption profile Health monitoring Vital problem warning Your walking distance Prioritized transmission is required Pre-emption is required for critical traffic Consider delay & reliability

Devices with Limited Power Most mobile devices are powered by batteries. Hand-held devices Sensors, public monitoring devices Energy saving is necessary MAC protocol should be integrated with power saving mechanism To maximize power saving Efficient energy saving protocol For delay tolerant traffic

High Reliability Transmission The integrity of critical control message or data should be ensured. Public warning devices & signals Emergent reporting for the M2M consumers Feedback is necessary to ensure the transmission and reception. HARQ with ACK/NACK Fountain codes, network coding

Proposed Text to the IEEE 802.16p M2M SRD (1) 6.2.4 The 802.16p system shall support optimized signaling for resource allocation for large numbers of M2M devices individually or by group. 6.2.4.1 Pre-emptive resource allocation should be provided if emergent signaling or data delivery is required. 6.2.5 The 802.16p system shall support efficient and reliable control and data delivery to and from groups of devices. 6.2.5.1 Control and data delivery to and from groups of devices shall be categorized, based on delay requirements and reliability requirement. 6.2.5.2 Delay-bounded group data delivery mechanism shall be provided to disseminate delay-sensitive information to/from a group of M2M devices. 6.2.5.3 Feedback mechanism may be provided to ensure the reliability of critical control and data delivery to/from M2M devices for mission-critical M2M transmission.

Proposed Text to the IEEE 802.16p M2M SRD (2) 6.2.6 The 802.16p system shall support efficient mechanisms for network access from large numbers of M2M devices. 6.2.6.1 Energy-efficient group data delivery mechanism shall be provided to disseminate delay-tolerant information to/from a group of M2M devices. The energy-efficient group delivery mechanism shall be integrated with power saving mechanism of M2M devices. 6.2.8 The 802.16p system shall provide mechanisms for allowing access with different levels of priority for M2M devices across different classes of M2M services. 6.2.8.1 The access of different M2M services shall be pre-emptive. M2M transmission with higher priority level should be able to gain access from low level ones.

References [1] C80216ppc-10_0014, “Project Planning Committee (PPC): Session #69 WG Closing Plenary Report,” IEEE 802.16PPC, 2010-09-15 [2] C80216ppc-10_0053, “Efficient Control of a Large Number of Devices,” Eldad Zeira, InterDigital Communications, 2010-08-25 [3] C80216ppc-10_0011r2, “IEEE 802.16p Machine to Machine (M2M) System Requirements Document (Initial Working document revised),” 2010-09-16