# US 10,455,507 B2 · Triggered target wake time operation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,507 B2 - Document ID: US10455507B2 - Status: Granted - Kind: B2 - Application number: 15/645,882 - Filed: 2017-07-10 - Published: 2017-10-26 - Granted: 2019-10-22 - Earliest claimed: 2015-01-28 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Alfred Asterjadhi; Simone Merlin; Bin Tian; George Cherian; Gwendolyn Denise Barriac - Web page: https://patentgrep.com/patent/US10455507B2 ## CPC - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04W 28/0221: {power availability or consumption} - H04W 52/0212: {managed by the network, e.g. network or access point is leader and terminal is follower} - H04W 52/0235: {where the received signal is a power saving command} - H04W 52/0274: {by switching on or off the equipment or parts thereof} - H04W 72/005 - Y02D 70/00 - Y02D 70/142 - 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 A method, an apparatus, and a computer-readable medium for wireless communication are provided. In an aspect, an apparatus may be configured to determine whether to switch to an active mode, a power save mode, or a TWT power save mode. During the TWT power save mode, the apparatus may enter an awake state during TWT service periods and may enter a doze state outside of the TWT service periods. The apparatus may transmit a message to a second wireless device based on the determination. ## Claims ### Claim 1 A method of wireless communication by a first wireless device, comprising: receiving, from a second wireless device, a first message that indicates an intention of the second wireless device to switch from a first operating mode to a second operating mode, wherein the first operating mode is one of an active mode, a power save mode, or a target wake time (TWT) power save mode, wherein the second operating mode is one of the active mode, the power save mode, or the TWT power save mode, wherein the first operating mode is different from the second operating mode and the intention to switch from the first operating mode to the second operating mode includes the intention to transition to or from the TWT power save mode, and wherein the second wireless device is configured to enter an awake state during TWT service periods and enter a doze state outside of the TWT service periods when configured to operate in the TWT power save mode; and transmitting, to the second wireless device, an acknowledgment that indicates that the first wireless device received the first message. ### Claim 2 (depends on 1) The method of claim 1, wherein the TWT service periods are identified based on a TWT schedule associated with the second wireless device. ### Claim 3 (depends on 1) The method of claim 1, wherein the first message includes a power management indicator that indicates the operating mode to which the second wireless device intends to switch. ### Claim 4 (depends on 1) The method of claim 1, further comprising transmitting a responder mode indicator that indicates whether the first wireless device is in a doze state outside of the TWT service periods. ### Claim 5 (depends on 1) The method of claim 1, further comprising storing the operating mode associated with the second wireless device. ### Claim 6 (depends on 1) The method of claim 1, further comprising: transmitting a second message that includes information to instruct the second wireless device to switch operating modes. ### Claim 7 (depends on 6) The method of claim 6, wherein the second message is a quality of service (QoS) message. ### Claim 8 (depends on 7) The method of claim 7, wherein the information includes an end of service period (EOSP) indicator set to 1 to instruct the second wireless device to switch operating modes. ### Claim 9 (depends on 6) The method of claim 6, wherein the information indicates the operating mode to which the second wireless device is to switch. ### Claim 10 (depends on 6) The method of claim 6, wherein the information includes a first indicator to instruct the second wireless device to switch from the first operating mode to the second operating mode. ### Claim 11 (depends on 10) The method of claim 10, wherein the first operating mode is the TWT power save mode, and wherein the second operating mode is the power save mode or the active mode. ### Claim 12 (depends on 10) The method of claim 10, wherein the first operating mode is the active mode or the power save mode, and wherein the second operating mode is the TWT power save mode. ### Claim 13 (depends on 10) The method of claim 10, wherein the first indicator includes an end of service period (EOSP) indicator. ### Claim 14 (depends on 10) The method of claim 10, wherein the first indicator includes a power management indicator. ### Claim 15 (depends on 6) The method of claim 6, wherein the information includes a first indicator to instruct the second wireless device to switch to or to switch away from the TWT power save mode. ### Claim 16 A first wireless device comprising: means for receiving, from a second wireless device, a first message that indicates an intention of the second wireless device to switch from a first operating mode to a second operating mode, wherein the first operating mode is one of an active mode, a power save mode, or a target wake time (TWT) power save mode, wherein the second operating mode is one of the active mode, the power save mode, or the TWT power save mode, wherein the first operating mode is different from the second operating mode and the intention to switch from the first operating mode to the second operating mode includes the intention to transition to or from the TWT power save mode, and wherein the second wireless device is configured to enter an awake state during TWT service periods and enter a doze state outside of the TWT service periods when configured to operate in the TWT power save mode; and means for transmitting, to the second wireless device, an acknowledgment that indicates that the first wireless device received the first message. ### Claim 17 (depends on 16) The first wireless device of claim 16, wherein the TWT service periods are identified based on a TWT schedule associated with the second wireless device. ### Claim 18 (depends on 16) The first wireless device of claim 16, wherein the first message includes a power management indicator that indicates the operating mode to which the second wireless device intends to switch. ### Claim 19 (depends on 16) The first wireless device of claim 16, further comprising means for transmitting a responder mode indicator that indicates whether the first wireless device is in a doze state outside of the TWT service periods. ### Claim 20 (depends on 16) The first wireless device of claim 16, further comprising means for transmitting an indication to the second wireless device instructing the second wireless device to switch to or to switch away from the TWT power save mode. ### Claim 21 (depends on 16) The first wireless device of claim 16, further comprising means for storing the operating mode associated with the second wireless device. ### Claim 22 A first wireless device comprising: a memory; and at least one processor coupled to the memory, wherein the at least one processor is configured to: receive, from a second wireless device, a first message that indicates an intention of the second wireless device to switch from a first operating mode to a second operating mode, wherein the first operating mode is one of an active mode, a power save mode, or a target wake time (TWT) power save mode, wherein the second operating mode is one of the active mode, the power save mode, or the TWT power save mode, wherein the first operating mode is different from the second operating mode and the intention to switch from the first operating mode to the second operating mode includes the intention to transition to or from the TWT power save mode, and wherein the second wireless device is configured to enter an awake state during TWT service periods and enter a doze state outside of the TWT service periods when configured to operate in the TWT power save mode; and transmit, to the second wireless device, an acknowledgment that indicates that the first wireless device received the first message. ### Claim 23 (depends on 22) The first wireless device of claim 22, wherein the TWT service periods are identified based on a TWT schedule associated with the second wireless device. ### Claim 24 (depends on 22) The first wireless device of claim 22, wherein the first message includes a power management indicator that indicates the operating mode to which the second wireless device intends to switch. ### Claim 25 (depends on 22) The first wireless device of claim 22, wherein the at least one processor is further configured to transmit a responder mode indicator that indicates whether the first wireless device is in a doze state outside of the TWT service periods. ### Claim 26 (depends on 22) The first wireless device of claim 22, wherein the at least one processor is further configured to transmit an indication to the second wireless device instructing the second wireless device to switch to or to switch away from the TWT power save mode. ### Claim 27 (depends on 22) The first wireless device of claim 22, wherein the at least one processor is further configured to store the operating mode associated with the second wireless device. ### Claim 28 A non-transitory computer-readable medium having code stored thereon that is executable by at least one processor of a first wireless device, wherein the code comprises: instructions for receiving a first message from a second wireless device that indicates an intention of the second wireless device to switch from a first operating mode to a second operating mode, wherein the first operating mode that is one of an active mode, a power save mode, or a target wake time (TWT) power save mode, wherein the second operating mode is one of the active mode, the power save mode, or the TWT power save mode, wherein the first operating mode is different from the second operating mode and the intention to switch from the first operating mode to the second operating mode includes the intention to transition to or from the TWT power save mode, wherein the second wireless device is configured to enter an awake state during TWT service periods and enter a doze state outside of the TWT service periods when configured to operate in the TWT power save mode; and instructions for transmitting to the second wireless device an acknowledgment that indicates that the first wireless device received the first message. ### Claim 29 (depends on 28) The non-transitory computer-readable medium of claim 28, wherein the code comprises instructions for storing the operating mode associated with the second wireless device. ### Claim 30 A method of wireless communication by a first wireless device, comprising: transmitting, to a second wireless device, a first message that indicates an intention of the first wireless device to switch from a first operating mode to a second operating mode, wherein the first operating mode is one of an active mode, a power save mode, or a target wake time (TWT) power save mode, wherein the second operating mode is one of the active mode, the power save mode, or the TWT power save mode, wherein the first operating mode is different from the second operating mode and the intention to switch from the first operating mode to the second operating mode includes the intention to transition to or from the TWT power save mode, and wherein the first wireless device is configured to enter an awake state during TWT service periods and enter a doze state outside of the TWT service periods when configured to operate in the TWT power save mode; and receiving, from the second wireless device, an acknowledgment that indicates that the second wireless device received the first message.