# US 2018/0324699 A1 · Automatic delivery traffic indication message interval control for better mobile power save performance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324699 A1 - Document ID: US20180324699A1 - Status: Published application - Kind: A1 - Application number: 16/030,336 - Filed: 2018-07-09 - Published: 2018-11-08 - Earliest claimed: 2014-01-31 - Assignees: Hewlett Packard Enterprise Development LP - Applicants: Hewlett Packard Enterprise Development LP - Inventors: Gautam Bhanage; Partha Narasimhan - Web page: https://patentgrep.com/patent/US20180324699A1 ## 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} - 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 The present disclosure discloses a method and network device for automatic delivery traffic indication message (DTIM) interval control for better mobile power save performance. The disclosed network device determines one or more characteristics for at least one client device connected to an Access Point (AP). The network device then dynamically selects a DTIM interval for the AP based on the characteristics for the at least one client device, and configures the AP to transmit a DTIM beacon frame at a frequency based on the dynamically selected DTIM interval. Alternatively, the network device can determine one or more characteristics for a client device, and dynamically select a Virtual Access Point (VAP) for providing network access to the client device based on the characteristics for the client device and a DTIM interval configured for the VAP, and then cause the client device to connect to the VAP. ## Claims ### Claim 1 A network device, operable to: determine one or more characteristics for at least one client device connected to a first Access Point (AP); dynamically select in said first AP a Delivery Traffic Indication Message (DTIM) interval for the at least one client device based on the one or more characteristics; and transmit from said first AP a DTIM beacon frame at a frequency based on the dynamically selected DTIM interval selected by said first AP. ### Claim 2 (depends on 1) A network device in accordance with claim 1, wherein the one or more characteristics for the at least one client device indicate one or more of: a frequency with which the at least one client device enters a power save mode; a frequency with which the at least one client device exits the power save mode; an amount of data transmitted by the at least one client device over a period of time; an amount of data transmitted to the at least one client device over the period of time; a type of data typically transmitted by the at least one client device; the applications currently executing on the at least one client device; and a current level of power remaining in a battery of the at least one client device. ### Claim 3 (depends on 1) The network device of claim 1, wherein, to dynamically select the DTIM interval, said network device dynamically selects the DTIM interval for a first Virtual Access Point (VAP) of one or more VAPs executing on said first AP. ### Claim 4 (depends on 1) The network device of claim 1, wherein, to dynamically select the DTIM interval, said network device dynamically selects the DTIM interval for a first radio of one or more radios of said first AP. ### Claim 5 (depends on 1) The network device of claim 1, wherein said network device dynamically selects the DTIM interval based on the frequency with which the at least one client device enters the power save mode or the frequency with which the at least one client device exits the power save mode. ### Claim 6 (depends on 1) The network device of claim 1, wherein the characteristics for the at least one client device are determined based on monitoring, in said network device, the at least one client device during a period of time between transmission of DTIM beacon frames. ### Claim 7 (depends on 1) The network device of claim 1, wherein said network device dynamically selects the DTIM interval based on the amount of data transmitted by the at least one client device over a period of time or the amount of data transmitted to the at least one client device over the period of time. ### Claim 8 (depends on 1) The network device of claim 1, wherein said network device dynamically selects the DTIM interval based on the type of data typically transmitted by the at least one client device. ### Claim 9 (depends on 1) The network device of claim 1, wherein said network device dynamically selects the DTIM interval based on the applications that are currently executing on the at least one client device. ### Claim 10 (depends on 1) The network device of claim 1, wherein said network device dynamically selects the DTIM interval based on the current level of power remaining in a battery of the at least one client device. ### Claim 11 (depends on 1) The network device of claim 1, wherein the DTIM interval is dynamically selected by said network device based on a current time in addition to the one or more characteristics. ### Claim 12 (depends on 1) The network device of claim 1, further operable to dynamically select DTIM interval values for respective Virtual Access Points (VAPs) executing on the first AP based on characteristics associated with a plurality of client devices connected to at least one of the VAPs executing on said first AP. ### Claim 13 A network device, operable to: determine one or more characteristics for at least one client device; dynamically select a first Virtual Access Point (VAP) from a plurality of VAPs, to provide network access to the at least one client device, based on the one or more characteristics for the at least one client device, wherein a DTIM interval for said at least one client device is determined by said network device based on a frequency that the at least one client device enters a power save mode; and cause the at least one client device to connect to said first VAP. ### Claim 14 (depends on 13) The network device of claim 13, wherein the one or more characteristics for the at least one client device indicate one or more of: the frequency with which the at least one client device enters the power save mode; a frequency with which the at least one client device exits the power save mode; an amount of data transmitted by the at least one client device over a period of time; an amount of data transmitted to the at least one client device over the period of time; a type of data typically transmitted by the at least one client device; the applications currently executing on the at least one client device; and a current level of power remaining in a battery of the at least one client device. ### Claim 15 (depends on 13) The network device of claim 13, wherein said network device dynamically selects said first VAP from the plurality of VAPs further based on a frequency with which the at least one client device exits the power save mode. ### Claim 16 (depends on 13) The network device of claim 13, wherein said network device is operable to dynamically select said first VAP from the plurality of VAPs further based on an amount of data transmitted by the at least one client device over a period of time or an amount of data transmitted to the at least one client device over the period of time. ### Claim 17 A network device operable to: determine one or more characteristics for at least one client device; dynamically select, in said network device, a first radio from a plurality of radios, to provide network access to the at least one client device, based on the one or more characteristics for the at least one client device configured for the first radio, wherein a DTIM interval is determined by said network device based on applications that are currently executing on the at least one client device; and cause the at least one client device to connect to the first radio. ### Claim 18 (depends on 17) The network device of claim 17, wherein the one or more characteristics for the at least one client device indicate one or more of: a frequency with which the at least one client device enters a power save mode; a frequency with which the at least one client device exits the power save mode; an amount of data transmitted by the at least one client device over a period of time; an amount of data transmitted to the at least one client device over the period of time; a type of data typically transmitted by the at least one client device; the applications that are currently executing on the at least one client device; and a current level of power remaining in a battery of the at least one client device. ### Claim 19 (depends on 17) The network device of claim 17, wherein said network device dynamically selects the first radio from the plurality of radios further based on a frequency with which the at least one client device enters a power save mode or a frequency with which the at least one client device exits the power save mode. ### Claim 20 (depends on 17) The network device of claim 17, wherein said network device dynamically selects the first radio from the plurality of radios further based on an amount of data transmitted by the at least one client device over a period of time or an amount of data transmitted to the at least one client device over the period of time. ### Claim 21 (depends on 17) The network device of claim 17, wherein said network device is operable to dynamically select the first radio from the plurality of radios further based on a current level of power remaining in a battery of the at least one client device.