IEEE Standard for Air Interface for Broadband Wireless Access Systems—Proposed Proposed Amendment 802.16s for GRIDMAN WG Discussions: Support for Channel Bandwidths Less Than 1.25 MHz Reference: P80216Rev4_D0 3. Definitions Insert the following new definition: Band AMC: aka subcarrier permutation’ is a permutation scheme in which the entire channel is split into ‘adjacent groups of nine contiguous subcarriers. Each group, defined as a bin, is comprised of eight data subcarriers and one pilot subcarrier. 6.3.2.1 MAC header formats Change the paragraph as indicated: The MAC header formats are defined in Table 6-1 except for the MAC header formats for DL MAP and UL MAP MAC messages for channel bandwidth less than 1.25 MHz in which case the MAC header formats are defined in paragraph 6.3.2.1.1.2. Insert the following subclause: 6.3.2.1.1.2 MAC header format for DL MAP and UL MAP MAC messages when the channel bandwidth is less than 1.25 MHz The header of the DLMAP MAC message shall be of the format defined in Table 6-6. The DLMAP is always the first burst in the DLSF so it can be identified as DLMAP directly. CID indication is therefore not needed at the receiver side .The modified GMAC header consists of 1 byte length field and 1 byte for HCS field. Insert Table 6-6 as indicated: Table 6-6 - Modified DLMAP header for channel bandwidths less than 1.25 MHz
IEEE Standard for Air Interface for Broadband Wireless Access Systems—Proposed Proposed Amendment 802.16s for GRIDMAN WG Discussions: Support for Channel Bandwidths Less Than 1.25 MHz Reference: P80216Rev4_D0 3. Definitions Insert the following new definition: Band AMC: aka ‘adjacent subcarrier permutation’ is a permutation scheme in which the entire channel is split into groups of nine contiguous subcarriers. Each group, defined as a bin, is comprised of eight data subcarriers and one pilot subcarrier. 6.3.2.1 MAC header formats Change the paragraph as indicated: The MAC header formats are defined in Table 6-1 except for the MAC header formats for DL MAP and UL MAP MAC messages for channel bandwidth less than 1.25 MHz in which case the MAC header formats are defined in paragraph 6.3.2.1.1.2. Insert the following subclause: 6.3.2.1.1.2 MAC header format for DL MAP and UL MAP MAC messages when the channel bandwidth is less than 1.25 MHz The header of the DLMAP MAC message shall be of the format defined in Table 6-6. The DLMAP is always the first burst in the DLSF so it can be identified as DLMAP directly. CID indication is therefore not needed at the receiver side .The modified GMAC header consists of 1 byte length field and 1 byte for HCS field. Insert Table 6-6 as indicated: Table 6-6 - Modified DLMAP header for channel bandwidths less than 1.25 MHz
16-17-0001-03-000s-draft-proposed-amendments-to-802-16-to-support-1-25-mhz-channels.docx