# US 9,521,619 B2 · Systems and methods for implementing WLAN power saving using an alternate wireless protocol > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,619 B2 - Document ID: US9521619B2 - Status: Granted - Kind: B2 - Application number: 14/252,636 - Filed: 2014-04-14 - Published: 2015-10-15 - Granted: 2016-12-13 - Earliest claimed: 2014-04-14 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Vijaykumar Balasubramanian; Sasidhar Subramaniam - Web page: https://patentgrep.com/patent/US9521619B2 ## CPC - H04W 52/0225: {using monitoring of external events, e.g. the presence of a signal} - H04L 69/14: Multichannel or multilink protocols - H04L 69/18: Multiprotocol handlers, e.g. single devices capable of handling multiple protocols - H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) - H04W 80/00: Wireless network protocols or protocol adaptations to wireless operation - 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) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - 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 Systems and methods are disclosed for wireless communication including transmitting information regarding pending data to be transmitted using a first wireless protocol with a second wireless protocol to facilitate power conservation by allowing circuitry associated with the first wireless protocol to remain in a power save mode. ## Claims ### Claim 1 A method for wireless communications comprising: operating a first wireless protocol module of a receiving wireless communications device in a power save mode, wherein the first wireless protocol module is configured to communicate using a first wireless protocol; maintaining a second wireless protocol module of the receiving wireless communications device in an active mode to receive information regarding pending group traffic data from a transmitting wireless communications device using a second wireless protocol; and selectively operating the first wireless protocol module of the receiving wireless communications device in an active mode to receive the pending group traffic data. ### Claim 2 (depends on 1) The method of claim 1, further comprising establishing capabilities regarding the second wireless protocol between the receiving wireless communications device and the transmitting wireless communications device. ### Claim 3 (depends on 1) The method of claim 1, further comprising informing the transmitting wireless communications device that the receiving wireless communications device will be operating in the power save mode. ### Claim 4 (depends on 3) The method of claim 3, wherein the transmitting wireless communications device is configured to deliver information regarding pending group traffic data to the receiving wireless communications device using the second wireless protocol when the receiving wireless communications device is operating in the power save mode, and is configured to deliver information regarding pending group traffic data to the receiving wireless communications device using the first wireless protocol when the receiving wireless communications device is operating in the active mode. ### Claim 5 (depends on 1) The method of claim 1, wherein the first wireless protocol is a wireless local area network (WLAN) protocol. ### Claim 6 (depends on 5) The method of claim 5, wherein the information regarding pending group traffic data is delivery traffic indication map (DTIM) information. ### Claim 7 (depends on 1) The method of claim 1, wherein the second wireless protocol is a cellular network protocol. ### Claim 8 A wireless communications device comprising: a first wireless protocol module configured to communicate using a first wireless protocol; a second wireless protocol module configured to communicate using a second wireless protocol; one or more processors; and a memory storing instructions that, when executed by the one or more processors, cause the wireless communications device to: operate the first wireless protocol module in a power save mode; maintain the second wireless protocol module in an active mode to receive information regarding pending group traffic data from another wireless communications device using a second wireless protocol; and selectively operate the first wireless protocol module in an active mode to receive the pending group traffic data. ### Claim 9 (depends on 8) The wireless communications device of claim 8, wherein execution of the instructions further causes the wireless communications device to: communicate the information regarding pending group traffic data received using the second wireless protocol module to the first wireless protocol module when the first wireless protocol module is operating in the power save mode. ### Claim 10 (depends on 9) The wireless communications device of claim 9, wherein execution of the instructions further causes the wireless communications device to: signal the other wireless communications device to use the second wireless protocol to transmit the information regarding pending group traffic data before operating the first wireless protocol module in the power save mode. ### Claim 11 (depends on 9) The wireless communications device of claim 9, wherein execution of the instructions to selectively operate the first wireless protocol module in the active mode causes the wireless communications device to: transition the first wireless protocol module from the power save mode to the active mode upon receiving the information regarding pending group traffic data. ### Claim 12 (depends on 8) The wireless communications device of claim 8, wherein the first wireless protocol module is configured to receive the information regarding pending group traffic data when operating in the active mode. ### Claim 13 (depends on 8) The wireless communications device of claim 8, wherein the second wireless protocol is a cellular network protocol. ### Claim 14 (depends on 8) The wireless communications device of claim 8, wherein the first wireless protocol is a wireless local area network (WLAN) protocol. ### Claim 15 (depends on 14) The wireless communications device of claim 14, wherein the information regarding pending group traffic data is delivery traffic indication map (DTIM) information. ### Claim 16 A non-transitory computer-readable medium storing instructions that, when executed by a processor of a wireless communications device, causes the wireless communications device to: operate a first wireless protocol module of the wireless communications device in a power save mode; maintain a second wireless protocol module of the wireless communications device in an active mode to receive information regarding pending group traffic data from another wireless communications device using a second wireless protocol; and selectively operate the first wireless protocol module in an active mode to receive the pending group traffic data. ### Claim 17 (depends on 16) The non-transitory computer-readable storage medium of claim 16, wherein execution of the instructions to selectively operate the first wireless protocol module in the active mode causes the wireless communications device to: transition the first wireless protocol module from the power save mode to the active mode upon receiving the information regarding pending group traffic data. ### Claim 18 (depends on 16) The storage medium of claim 16, wherein execution of the instructions further causes the wireless communications device to: communicate the information regarding pending group traffic data received using the second wireless protocol module to the first wireless protocol module when the first wireless protocol module is operating in the power save mode.