# US 9,439,146 B2 · Standby time improvements for stations in a wireless network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,146 B2 - Document ID: US9439146B2 - Status: Granted - Kind: B2 - Application number: 14/076,157 - Filed: 2013-11-08 - Published: 2014-03-06 - Granted: 2016-09-06 - Earliest claimed: 2006-03-03 - Applicants: Qualcomm Incorporated - Inventors: Arnaud Meylan; Manoj M. Deshpande; Sanjiv Nanda - Web page: https://patentgrep.com/patent/US9439146B2 ## CPC - H04W 52/0225: {using monitoring of external events, e.g. the presence of a signal} - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 84/12: WLAN [Wireless Local Area Networks] - 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 method includes receiving, at a station, a first delivery traffic indication message (DTIM) assigned to a first delivery interval. The first DTIM is configured to indicate whether group-addressed traffic is scheduled for delivery during a beacon interval. The first delivery interval is larger than a second delivery interval associated with a second DTIM. The method further includes receiving the group-addressed traffic during the beacon interval. ## Claims ### Claim 1 A method for receiving traffic for improving power savings, comprising: receiving, at a mobile station, a regular delivery traffic indication message and a slow delivery traffic indication message that is sent at a slower rate than the regular delivery traffic indication message with the regular delivery traffic indication message indicating first broadcast and multicast traffic and the slow delivery traffic indication message indicating second broadcast and multicast traffic; and receiving the second broadcast and multicast traffic as indicated by the slow delivery traffic indication message, wherein the second broadcast and multicast traffic includes network traffic without application broadcast traffic. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one of broadcast traffic and multicast traffic includes traffic associated with managing network connectivity and network monitoring, and wherein any incoming traffic data is buffered. ### Claim 3 (depends on 1) The method of claim 1, wherein the mobile station sleeps through the regular delivery traffic indication message. ### Claim 4 (depends on 3) The method of claim 3, wherein the slow delivery traffic indication message is sent in every N regular delivery traffic indication message, and wherein N is greater than one. ### Claim 5 (depends on 1) The method of claim 1, wherein the slow delivery traffic indication message is sent at every beacon interval and wherein the second broadcast and multicast traffic is delivered to a station in a power-save mode. ### Claim 6 (depends on 1) The method of claim 1, wherein the slow delivery traffic indication message is sent in each listen interval for every station or for a group of stations having a same listen interval. ### Claim 7 (depends on 1) The method of claim 1, wherein the mobile station is associated with a wireless local area network, WLAN. ### Claim 8 An apparatus comprising: means for receiving a regular delivery traffic indication message and a slow delivery traffic indication message slow delivery traffic indication message that is sent at a slower rate than the regular delivery traffic indication message, with the regular delivery traffic indication message indicating first broadcast and multicast traffic and the slow delivery traffic indication message indicating second broadcast and multicast traffic; and means for receiving the second broadcast and multicast traffic as indicated by the slow delivery traffic indication message wherein the second broadcast and multicast traffic includes network traffic without application broadcast traffic. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the at least one of broadcast traffic and multicast traffic includes traffic associated with managing network connectivity and network monitoring, and wherein any incoming traffic data is buffered. ### Claim 10 (depends on 8) The apparatus of claim 8 further comprising: means for sleeping through the regular delivery traffic indication message. ### Claim 11 (depends on 8) The apparatus of claim 8, wherein the slow delivery traffic indication message is sent in every N regular delivery traffic indication message, and wherein N is greater than one. ### Claim 12 (depends on 8) The apparatus of claim 8, wherein the slow delivery traffic indication message is sent at every beacon interval and wherein the second broadcast and multicast traffic is delivered to an apparatus in a power-save mode. ### Claim 13 (depends on 8) The apparatus of claim 8, wherein the slow delivery traffic indication message is sent in each listen interval for every apparatus or for a group of apparatuses having a same listen interval. ### Claim 14 (depends on 8) The apparatus of claim 8, wherein the apparatus is associated with a wireless local area network, WLAN. ### Claim 15 A non-transitory computer-readable medium including program code that, when executed by a processor, causes the processor to: receive, at a mobile station, a regular delivery traffic indication message and a slow delivery traffic indication message sent at a slower rate than the regular delivery traffic indication message, with the regular delivery traffic indication message indicating first broadcast and multicast traffic and the slow delivery traffic indication message indicating second broadcast and multicast traffic; and receive the second broadcast and multicast traffic as indicated by the slow delivery traffic indication message, wherein the second broadcast and multicast traffic includes network traffic without application broadcast traffic. ### Claim 16 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the program code further causes the processor to cause the mobile station to sleep through the regular delivery traffic indication message.