IEEE C802.16m-09/1662
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Project
Title
Date
Submitted
IEEE 802.16 Broadband Wireless Access Working Group < http://ieee802.org/16 >
Proposed Changes/Refinements to the Sections 10.11 of IEEE 802.16m SDD (IEEE 802.16m-08/0034)
2009-08-21
Source(s)
Re:
Abstract
Purpose
Notice
Release
Patent Policy
Youngbin Chang, Rakesh Taori, Anil Agiwal, Jungje Son
Samsung Electronics
Sassan Ahmadi
Intel Corporation yb.chang@samsung.com
Change Request on 802.16m SDD, IEEE 802.16m-08/0034
The contribution proposes text changes to Sections 10.11 of IEEE 802.16m SDD. sassan.ahmadi@intel.com
To be discussed and adopted by TGm for the IEEE 802.16m SDD
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Introduction
This contribution proposes text changes to Sections 10.11 of the IEEE 802.16m SDD [1] where the system description requires additional detail. The proposed text is consistent with the 802.16m Draft Amendment [2]. The refined SDD document will be a necessary supplement in the submission of IEEE 802.16m technology description template to ITU-R/WP 5D later this year.
Proposed text has been underlined in blue and deleted text has been struck through in red. Existing SDD text is shown in black.
References
[1] P802.16m System Description Document, 802.16m-08/0034, July 2009.
[2] P802.16m DRAFT Amendment to IEEE Standard for Local and metropolitan area networks, P80216m/D1, July
2009
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10.11
MAC Management
To meet the latency requirements for aspects of network entry, handover, state transition, 802.16m supports fast and reliable transmission of MAC management messages.
To provide reliable transmission of MAC management messages, All MAC management messages shall be fragmentable. HARQ shall be applied to all the unicast MAC management messages.
M m essage timers for retransmission are defined for all the unicast MAC management messages. The message timers may be different for different MAC management messages. If HARQ is applied during the transmission of a MAC management message and if the HARQ process is terminated with an unsuccessful outcome before the expiration of the message timer, the
MAC message management entity in the transmitter may initiate retransmission of the complete message or the message fragment of the failed HARQ burst.
When the transmitter polls a message acknowledgement, the receiver responds MAC layer acknowledgement. For fragmented messages, all fragments of the message must be received before the MAC layer acknowledgment is sent.
The IEEE 802.16m MAC protocol peers communicate using a set of MAC Control Messages. These messages are defined using ASN.1 [10], [11], [12], [13]. The ASN.1 descriptions are written in way that provides future extension of the messages. The Packed Encoding Rules (PER) [14] are used to encode the messages for transmission over the air.
IEEE 802.16m provides a generic MAC management message at the L2 called L2_transfer that acts as a generic service carrier for various standards defined services including, but not limited to: Device provisioning bootstrap message to AMS, GPS assistance delivery to AMS, ABS(es) geo-location unicast delivery to AMS, 802.21 MIH transfer, etc.
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