Trigger frame format for orthogonal frequency division multiple access (OFDMA) communication
First Claim
1. A method for communicating in a wireless communication network, the method comprising:
- generating, at a first communication device, multiple trigger frames to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices, including generating(i) a broadcast trigger frame that includes information to indicate transmission parameters for a first subset of the second communication devices and(ii) one or more unicast trigger frames, wherein each of the one or more unicast trigger frame includes information to indicate transmission parameters for a particular second communication device in a second subset of the second communication devices;
transmitting, with the first communication device, the multiple trigger frames to the multiple second communication devices in a single downlink OFDMA physical layer (PHY) protocol data unit (PPDU), including(i) transmitting the broadcast trigger frame to the first subset of the second communication devices, wherein the broadcast trigger frame is transmitted in a first frequency portion of the single downlink OFDMA PPDU to the multiple second communication devices, and(ii) transmitting the one or more unicast trigger frames to the second subset of the second communication devices, wherein one or more respective unicast trigger frames are transmitted in one or more respective second frequency portions of the single downlink OFDMA PPDU, the respective second frequency portions corresponding with the respective second communication devices in the second subset, wherein the one or more second frequency portions do not overlap in frequency with the first frequency portion; and
receiving, at the first communication device, the triggered uplink OFDMA transmission, wherein the triggered uplink OFDMA transmission includes respective transmissions from the multiple second communication devices.
6 Assignments
0 Petitions
Accused Products
Abstract
Multiple trigger frames are generated at a first communication device to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices. The multiple trigger frames include a broadcast trigger frame that includes information to indicate transmission parameters for a first subset of the second communication devices, and one or more unicast trigger frames, each of the one or more unicast trigger frame including information to indicate transmission parameters for a particular second communication device in a second subset of the second communication devices. The broadcast trigger frame is transmitted, in a first frequency portion of a downlink OFDMA transmission, to the first subset of the second communication devices, and respective unicast trigger frames are transmitted, in respective second frequency portions of the downlink OFDMA transmission, to the second subset of the second communication devices.
76 Citations
14 Claims
-
1. A method for communicating in a wireless communication network, the method comprising:
-
generating, at a first communication device, multiple trigger frames to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices, including generating (i) a broadcast trigger frame that includes information to indicate transmission parameters for a first subset of the second communication devices and (ii) one or more unicast trigger frames, wherein each of the one or more unicast trigger frame includes information to indicate transmission parameters for a particular second communication device in a second subset of the second communication devices; transmitting, with the first communication device, the multiple trigger frames to the multiple second communication devices in a single downlink OFDMA physical layer (PHY) protocol data unit (PPDU), including (i) transmitting the broadcast trigger frame to the first subset of the second communication devices, wherein the broadcast trigger frame is transmitted in a first frequency portion of the single downlink OFDMA PPDU to the multiple second communication devices, and (ii) transmitting the one or more unicast trigger frames to the second subset of the second communication devices, wherein one or more respective unicast trigger frames are transmitted in one or more respective second frequency portions of the single downlink OFDMA PPDU, the respective second frequency portions corresponding with the respective second communication devices in the second subset, wherein the one or more second frequency portions do not overlap in frequency with the first frequency portion; and receiving, at the first communication device, the triggered uplink OFDMA transmission, wherein the triggered uplink OFDMA transmission includes respective transmissions from the multiple second communication devices. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An apparatus, comprising:
-
a network interface device having one or more integrated circuits configured to generate a single downlink orthogonal frequency division multiple access (OFDMA) physical layer (PHY) protocol data unit (PPDU) that includes multiple trigger frames to trigger an uplink OFDMA transmission by multiple communication devices, wherein the multiple trigger frames include (i) a broadcast trigger frame that includes information to indicate transmission parameters for a first subset of the multiple communication devices and (ii) one or more unicast trigger frames, wherein each of the one or more unicast trigger frame includes information to indicate transmission parameters for a particular communication device in a second subset of the multiple communication devices; transmit the broadcast trigger frame to the first subset of the multiple communication devices, wherein the broadcast trigger frame is transmitted in a first frequency portion of the single downlink OFDMA PPDU to the multiple communication devices, and transmit the one or more unicast trigger frames to the second subset of the multiple communication devices, wherein one or more respective unicast trigger frames are transmitted in one or more respective second frequency portions of the single downlink OFDMA PPDU, the respective second frequency portions corresponding with the respective one of the multiple communication devices in the second subset, wherein the one or more second frequency portions do not overlap in frequency with the first frequency portion; and receive the triggered uplink OFDMA transmission, wherein the triggered uplink OFDMA transmission includes respective transmissions from the multiple communication devices. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
Specification