IEEE C80216m-09_0431 Project IEEE 802.16 Broadband Wireless Access Working Group <http://ieee802.org/16> Title Change Request to IEEE 802.16m System Description Document (SDD), Subsection 10.7 Convergence Sublayer Date Submitted 2009-02-27 Source(s) Dr. Michael Gundlach Nokia Siemens Networks St.-Martin-Str. 76 81541 Munich, Germany Re: IEEE 802.16m System Description Document (SDD) [Draft] 2009-02-07: IEEE 802.16m-08/003r7 Abstract Section 9 Convergence Sublayer is currently empty; Subsection 10.7 has the same title, however, the current text is not sufficient yet. This CR proposes an appropriate text for a combined subsection on Convergence Sublayer within the Section on MAC Layer. The coexistence of IPCS, GPCS, and Ethernet-CS is clarified. Purpose The proposed text shall be used as text in Subsection 10.7 Convergence Sublayer. Voice: E-mail:Michael.gundlach@nsn.com Note: As proposed in another comment, the subsection number may be 10.1 instead. Notice Release Patent Policy 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. 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. 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>. Text for Section 10.7 Convergence Sublayer in IEEE 802.16m System Description Document (SDD) Michael Gundlach Nokia Siemens Networks 10.7 Convergence Sublayer The Convergence Sublayer (CS) is the top part of the MAC Layer. It is above the MAC Common Part Sublayer (CPS). The CS is used to allow the transport of several different protocols (e.g. Ethernet, IPv4, IPv6) over the 1 IEEE C80216m-09_0431 802.16 network. It adds a header or wraps the data in a header and trailer that contain information necessary to provide the services. Typically, error control (forward error correction, see 14.4.3.2) and priority information are added at this layer. According to IEEE 802.16Rev2/D9, Section 5.3, the Generic Packet Convergence Sublayer (GPCS) is upper-layer-protocol independent. It supports multiple protocols over the 802.16 Air Interface. The classification is assumed to take place by packet parsing on layers above the CS, resulting in classification parameters given to the GPCS SAP for “parameterized classification”. The GPCS does not define classification rules for each kind of payload but relies on higher layer functionality outside the scope of IEEE 802.16 to provide the assignment of packets to particular service flows. For communication between an AMS and an ABS, only GPCS shall be used. For communication between an AMS and a BS that has not implemented the protocol defined for WirelessMAN-OFDMA Advance System, or between an ABS and an MS that has not implemented the protocol defined for WirelessMAN-OFDMA Advance System, respectively, other CS signalling may be used, such as IPCS or Ethernet-CS. 2