US Patent No. 9,300,767

MAC HEADER COMPRESSION IN LONG-RANGE WIRELESS LOCAL AREA NETWORKS


Patent No. 9,300,767
Issue Date March 29, 2016
Title Mac Header Compression In Long-range Wireless Local Area Networks
Inventorship Yong Liu, Campbell, CA (US)
Assignee MARVELL WORLD TRADE LTD., St. Michael (BB)

Claim of US Patent No. 9,300,767

1. A method of wireless communication comprising:
receiving, at a first communication device, a plurality of packets, wherein
each packet of the plurality of packets includes (i) a set of one or more flag bits, and (ii) a medium access control (MAC)
header,

each respective MAC header of a first subset of the plurality of packets contains only two address fields including (i) a
first address field specifying a receiver address, and (ii) a second address field specifying a transmitter address, and

each respective MAC header of a second subset of the plurality of packets includes a third address field in addition to and
separate from the first address field and the second address field, the second subset different from the first subset;

for a respective packet among the plurality of packets, determining, at the first communication device, whether a respective
set of one or more flag bits of the respective packet indicates that a station (STA), being either an original source or a
final destination of the respective packet, has any association identifier (AID) assigned by an access point (AP); and

processing, at the first communication device, a respective MAC header of the respective packet, wherein processing, the MAC
header includes:

(i) perceiving the respective packet as belonging to the second subset and processing the third address field when said determining
indicates that the STA, being either the original source or the final destination of the respective packet, was not assigned
any AID by the AP, wherein the third address field contains a MAC address of the original source or the final destination
of the respective packet, and

(ii) perceiving the respective packet as belonging to the first subset and processing an AID in the first address field or
in the second address field and an address of the AP when said determining indicates that the STA, being either the original
source or the final destination of the respective packet, was assigned an AID by the AP.