HE SIG B Common Field Formats and Indication

摘要

Methods and apparatus are provided for HE-SIG-B common field formats and indications. In one novel aspect, a fixed format is used for HE-SIG-B common field indicating resource allocations (RA). In one embodiment, look-up tables (LUT) are configured for the resource allocation and indicated in the HE-SIG-B common field. In one embodiment, one or more RA LUTs are used based on the operation bandwidth. The RA LUTs are placed in an order of channel indexes from lower channel to upper channel signaled in each corresponding RA LUT. In another novel aspect, MU-MIMO is used for operation bandwidth of 160 MHz and a compression indicator is set in the HE-SIG-A field indicating a saving of all RA LUTS in the HE-SIG-B common field. In yet another novel aspect, a one-bit middle-tone indicator is included in the HE-SIG-B common field indicating whether the one or more middle 26 tone is used.

主权项

1. A method, comprising:
(a) obtaining resource allocation (RA) information by a station (STA) in an OFDMA wireless network, wherein the RA information is indicated in a HE-SIG-B common field and user specific field, and wherein the HE-SIG-B common field for RA is with a fixed format; (b) determining an operation bandwidth(BW), wherein the operation bandwidth is partitioned into predefined resource units, and wherein different operation bandwidth is partitioned into one or more HE-SIG-B channels, and wherein each HE-SIG-B channel represents a 20 MHz resource block; (c) determining a resource allocation using a RU look-up table (LUT) based on the RA information. d) compressing the HE-SIG-B common field for full BW MU-MIMO packets; and e) determining the existence of user specific field for middle 26 tone RU of a 80 Mhz channel.