# US 10,873,909 B1 · Frequency division multiple access (FDMA) support for wakeup radio (WUR) operation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,909 B1 - Document ID: US10873909B1 - Status: Granted - Kind: B1 - Application number: 16/406,894 - Filed: 2019-05-08 - Granted: 2020-12-22 - Earliest claimed: 2018-05-08 - Assignees: Marvell Asia Pte Ltd - Applicants: Marvell International Ltd. - Inventors: Liwen Chu; Rui Cao; Hongyuan Zhang; Hui-Ling Lou - Web page: https://patentgrep.com/patent/US10873909B1 ## CPC - H04W 52/0229: {where the received signal is a wanted signal} - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A first communication device generates one or more wakeup frames for transmission to one or more second communication devices, and generates a wakeup packet to include the one or more wakeup frames for transmission in respective ones of one or more particular wakeup radio (WUR) operating channels of respective ones of the one or more second communication devices. The respective one or more WUR operating channels are determined by previous negotiation between the first communication device and respective ones of the one or more second communication devices. The first communication device transmits the wakeup packet to the one or more second communication devices, with respective ones of the one or more wakeup frames transmitted in respective ones of the one or more particular WUR operating channels to prompt the respective ones of the one or more second communication devices to transition from a low power state to an active state. ## Claims ### Claim 1 A method, comprising: generating, at a first communication device, multiple wakeup frames, respective ones of the multiple wakeup frames for transmission to respective ones of multiple second communication devices; generating, at the first communication device, a wakeup packet to include the multiple wakeup frames for transmission in respective particular wakeup radio (WUR) operating channels of respective ones of the multiple second communication devices, the respective WUR operating channels determined by previous negotiation between the first communication device and respective ones of the multiple second communication devices; and transmitting, by the first communication device, the wakeup packet to prompt respective one or more second communication devices, among the multiple second communication devices, to transition from a low power state to an active state, including, prior to transmission of the wakeup packet, puncturing a portion of the wakeup packet, the portion corresponding to a component channel, among a plurality of component channels of an operating channel of the first communication device, that is determined by the first communication device to be busy. ### Claim 2 (depends on 1) The method of claim 1, further comprising negotiating a particular WUR operating channel with a particular second communication device among the multiple second communication devices, including receiving, at the first communication device from the particular second communication device, a request frame that includes a WUR operating channel element including an indication that the particular WUR operating channel is requested by the particular second communication device, and transmitting, from the first communication device to the particular second communication device, a response frame that includes an indication that the particular second communication device is permitted to operate in the particular WUR operating channel requested by the particular second communication device. ### Claim 3 (depends on 1) The method of claim 1, wherein the respective WUR operating channels of respective ones of the multiple second communication devices correspond to respective component channels of the operating channel of the first communication device. ### Claim 4 (depends on 3) The method of claim 3, further comprising, prior to transmitting the wakeup packet, selecting a particular component channel of the operating channel of the first communication device, the particular component channel corresponding to a particular WUR operating channel of a particular one of the multiple second communication devices, performing a backoff procedure in the selected component channel to determine when the selected component channel is idle, after determining that the selected component channel is idle, determining whether one or more other component channels corresponding to respective WUR operating channels one or more other second communication devices of the multiple second communication devices are idle or busy, and transmitting the wakeup packet in the selected component channel and one or more other component channels that are determined to be idle. ### Claim 5 (depends on 1) The method of claim 1, wherein generating the wakeup packet includes modulating respective ones of the multiple wakeup frames for transmission to respective ones of the multiple second communication devices, including i) modulating a first wakeup frame for transmission to a first one of the multiple second communication devices according to a first modulation and coding scheme (MCS) and ii modulating a second wakeup frame for transmission to a second one of the multiple second communication devices according to a second MCS different from the first MCS. ### Claim 6 (depends on 1) The method of claim 1, wherein generating the wakeup packet includes padding at least one of the multiple wakeup frames to equalize lengths of the multiple wakeup frames. ### Claim 7 (depends on 1) The method of claim 1, further comprising transmitting, from the first communication device, a beacon frame for synchronizing with wakeup radios of the multiple second communication devices, the beacon frame being duplicated in respective component channels of the operating channel of the first communication device corresponding to the respective WUR operating channels of the multiple second communication devices. ### Claim 8 An apparatus, comprising: a network interface device associated with a first communication device, wherein the network interface device includes one or more integrated circuits (ICs) configured to: generate multiple wakeup frames, respective ones of the multiple wakeup frames for transmission to respective ones of multiple second communication devices, generate a wakeup packet to include the multiple wakeup frames for transmission in respective particular wakeup radio (WUR) operating channels of respective ones of the multiple second communication devices, the respective WUR operating channels determined by previous negotiation between the first communication device and respective ones of the multiple second communication devices, and transmit in the wakeup packet to prompt respective ones of the second communication devices, among the multiple second communication devices, to transition from a low power state to an active state, including, prior to transmission of the wakeup packet, puncturing a portion of the wakeup packet, the portion corresponding to a component channel, among a plurality of component channels of an operating channel of the first communication device, that is determined by the first communication device to be busy. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the one or more IC devices are further configured to negotiate a particular WUR operating channel with a particular second communication device among the multiple second communication devices, the one or more IC devices being configured to: receive a request frame from the particular second communication device, the request frame including a WUR operating channel element that includes an indication that the particular WUR operating channel is requested by the particular second communication device, and transmit a response frame to the particular second communication device, the response frame including an indication that the particular second communication device is permitted to operate in the particular WUR operating channel requested by particular the second communication device. ### Claim 10 (depends on 8) The apparatus of claim 8, wherein the respective WUR operating channels of respective ones of the multiple second communication devices correspond to respective component channels of the operating channel of the first communication device. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the one or more IC devices are configured to, prior to transmitting the wakeup packet: select a particular component channel of the operating channel of the first communication device, the particular component channel corresponding to a particular WUR operating channel of a particular one of the multiple second communication devices, perform a backoff procedure in the selected component channel to determine when the selected component channel is idle, after determining that the selected component channel is idle, determine whether one or more other component channels corresponding to respective WUR operating channels one or more other second communication devices of the multiple second communication devices are idle or busy, and transmit the wakeup packet in the selected component channel and one or more other component channels that are determined to be idle. ### Claim 12 (depends on 8) The apparatus of claim 8, wherein the one or more IC devices are configured to modulate respective ones of the multiple wakeup frames for transmission to respective ones of the multiple second communication devices, including i) modulating a first wakeup frame for transmission to a first one of the multiple second communication devices according to a first modulation and coding scheme (MCS) and a) modulating a second wakeup frame for transmission to a second one of the multiple second communication devices according to a second MCS different from the first MCS. ### Claim 13 (depends on 8) The apparatus of claim 8, wherein the one or more IC devices are configured to pad at least one of the multiple wakeup frames to equalize lengths of the multiple wakeup frames. ### Claim 14 (depends on 8) The apparatus of claim 8, wherein the one or more IC devices are further configured to transmit a beacon frame for synchronizing with wakeup radios of the multiple second communication devices, the beacon frame being duplicated in respective component channels of the operating channel of the first communication device corresponding to the respective WUR operating channels of the multiple second communication devices.