# US 12,003,266 B2 · Exposure reporting for wireless communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,266 B2 - Document ID: US12003266B2 - Status: Granted - Kind: B2 - Application number: 18/357,479 - Filed: 2023-07-24 - Published: 2024-02-15 - Granted: 2024-06-04 - Earliest claimed: 2020-03-18 - Assignees: Comcast Cable Communications, LLC - Applicants: Comcast Cable Communications, LLC - Inventors: Hua Zhou; Esmael Hejazi Dinan; Yunjung Yi; Ali Cagatay Cirik; Kai Xu; Hyoungsuk Jeon; Jonghyun Park - Web page: https://patentgrep.com/patent/US12003266B2 ## CPC - H04B 1/3838: {Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use} - H04B 7/0602: {using antenna switching (H04B7/0686 takes precedence; antenna beam directivity switching H01Q3/24)} - H04B 7/063: {Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection} - H04B 7/0691: {using subgroups of transmit antennas} - H04B 17/328: {Reference signal received power [RSRP]; Reference signal received quality [RSRQ]} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 25/0226: {sounding signals per se} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 52/34: TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading - H04W 52/365: {Power headroom reporting} - H04W 52/42: in systems with time, space, frequency or polarisation diversity - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/535: {based on resource usage policies} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 52/44: in connection with interruption of transmission - H04W 74/0836: with 2-step access - H04W 74/0838: using contention-free random access [CFRA] - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Wireless communications may use one or more devices for transmission and/or reception that may lead to potentially harmful exposure. One or more safety measures may be used for wireless communication devices, such as maximum power exposure (MPE) reporting and/or related operations. An MPE report may be sent based on MPE detection and one or more messages, such as for cell activation, bandwidth part (BWP) or other wireless resource activation and/or switching, and/or a discontinuous reception (DRX) or other state transition. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device, at least one message indicating: a power reduction threshold for reporting maximum permissible exposure (MPE) power management maximum power reduction (P-MPR); and at least one secondary cell; and based on the power reduction threshold being satisfied by an MPE P-MPR value associated with a secondary cell of at least one secondary cell, transmitting a report comprising the MPE P-MPR value. ### Claim 2 (depends on 1) The method of claim 1, further comprising determining, based on an exposure requirement for the secondary cell, the MPE P-MPR value. ### Claim 3 (depends on 1) The method of claim 1, wherein the transmitting the report is further based on the secondary cell being activated. ### Claim 4 (depends on 1) The method of claim 1, wherein the power reduction threshold being satisfied by the MPE P-MPR value comprises the MPE P-MPR value being equal to or greater than the power reduction threshold. ### Claim 5 (depends on 1) The method of claim 1, wherein the report further comprises a power headroom report (PHR) value associated with the secondary cell. ### Claim 6 (depends on 1) The method of claim 1, further comprising: switching from a first uplink bandwidth part (BWP) of the secondary cell to a second uplink BWP of the secondary cell, wherein the secondary cell is associated with at least one antenna panel of the wireless device; and determining, based on the switching, the MPE P-MPR value, wherein the MPE P-MPR value satisfies an exposure requirement associated with the at least one antenna panel. ### Claim 7 (depends on 1) The method of claim 1, wherein the secondary cell is associated with at least one antenna panel of the wireless device, and wherein the method further comprises: transitioning from a discontinuous reception (DRX) inactive time to a DRX active time; and determining, based on the transitioning, the MPE P-MPR value, wherein the MPE P-MPR value satisfies an exposure requirement associated with the at least one antenna panel. ### Claim 8 (depends on 1) The method of claim 1, wherein the at least one message further indicates at least one of: a plurality of transmission configuration information (TCI) states associated with at least one antenna panel associated with the secondary cell; a plurality of sounding reference signal resource indicators (SRIs) associated with the at least one antenna panel; an uplink control resource of a primary cell; or an uplink control resource of a physical uplink control channel (PUCCH) secondary cell. ### Claim 9 (depends on 1) The method of claim 1, wherein the MPE P-MPR value is based on at least one of: a reference signal received power associated with at least one antenna panel associated with the secondary cell; a transmission signal format for transmission via the at least one antenna panel; or a proximity detection associated with the at least one antenna panel. ### Claim 10 A method comprising: transmitting, by a base station, at least one message indicating: a power reduction threshold for reporting maximum permissible exposure (MPE) power management maximum power reduction (P-MPR); and at least one secondary cell; and receiving a report indicating: an MPE P-MPR value associated with a secondary cell of the at least one secondary cell; and that the power reduction threshold has been satisfied by the MPE P-MPR value. ### Claim 11 (depends on 10) The method of claim 10, wherein the MPE P-MPR value satisfies an exposure requirement for the secondary cell. ### Claim 12 (depends on 10) The method of claim 10, wherein the receiving the report is after the secondary cell being activated. ### Claim 13 (depends on 10) The method of claim 10, wherein the report indicating that the power reduction threshold has been satisfied by the MPE P-MPR value comprises the report indicating that the MPE P-MPR value is equal to or greater than the power reduction threshold. ### Claim 14 (depends on 10) The method of claim 10, wherein the report further comprises a power headroom report (PHR) value associated with the secondary cell. ### Claim 15 (depends on 10) The method of claim 10, further comprising: switching from a first uplink bandwidth part (BWP) of the secondary cell to a second uplink BWP of the secondary cell, wherein the secondary cell is associated with at least one antenna panel of a wireless device; and wherein the MPE P-MPR value is determined based on the switching and satisfies an exposure requirement associated with the at least one antenna panel. ### Claim 16 (depends on 10) The method of claim 10, wherein the secondary cell is associated with at least one antenna panel of a wireless device, and wherein the MPE P-MPR value is determined based on a transition from a discontinuous reception (DRX) inactive time to a DRX active time and satisfies an exposure requirement associated with the at least one antenna panel. ### Claim 17 (depends on 10) The method of claim 10, the at least one message further indicates at least one of: a plurality of transmission configuration information (TCI) states associated with at least one antenna panel associated with the secondary cell; a plurality of sounding reference signal resource indicators (SRIs) associated with the at least one antenna panel; an uplink control resource of a primary cell; or an uplink control resource of a physical uplink control channel (PUCCH) secondary cell. ### Claim 18 (depends on 10) The method of claim 10, wherein the MPE P-MPR value is based on at least one of: a reference signal received power associated with at least one antenna panel associated with the secondary cell; a transmission signal format for transmission via the at least one antenna panel; or a proximity detection associated with the at least one antenna panel. ### Claim 19 A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, configure the wireless device to: receive at least one message indicating: a power reduction threshold for reporting maximum permissible exposure (MPE) power management maximum power reduction (P-MPR); and at least one secondary cell; and based on the power reduction threshold being satisfied by an MPE P-MPR value associated with a secondary cell of the at least one secondary cell, transmit a report comprising the MPE P-MPR value. ### Claim 20 (depends on 19) The wireless device of claim 19, wherein the instructions, when executed by the one or more processors, further configure the wireless device to determine, based on an exposure requirement for the secondary cell, the MPE P-MPR value. ### Claim 21 (depends on 19) The wireless device of claim 19, wherein the instructions, when executed by the one or more processors, configure the wireless device to transmit the report based on the secondary cell being activated. ### Claim 22 (depends on 19) The wireless device of claim 19, wherein the power reduction threshold being satisfied by the MPE P-MPR value comprises the MPE P-MPR value being equal to or greater than the power reduction threshold. ### Claim 23 (depends on 19) The wireless device of claim 19, wherein the report further comprises a power headroom report (PHR) value associated with the secondary cell. ### Claim 24 (depends on 19) The wireless device of claim 19, wherein the instructions, when executed by the one or more processors, further configure the wireless device to: switch from a first uplink bandwidth part (BWP) of the secondary cell to a second uplink BWP of the secondary cell, wherein the secondary cell is associated with at least one antenna panel of the wireless device; and determine, based on the switching, the MPE P-MPR value, wherein the MPE P-MPR value satisfies an exposure requirement associated with the at least one antenna panel. ### Claim 25 (depends on 19) The wireless device of claim 19, wherein the secondary cell is associated with at least one antenna panel of the wireless device, and wherein the instructions, when executed by the one or more processors, further configure the wireless device to: transition from a discontinuous reception (DRX) inactive time to a DRX active time; and determine, based on the transitioning, the MPE P-MPR value, wherein the MPE P-MPR value satisfies an exposure requirement associated with the at least one antenna panel. ### Claim 26 (depends on 19) The wireless device of claim 19, the at least one message further indicates at least one of: a plurality of transmission configuration information (TCI) states associated with at least one antenna panel associated with the secondary cell; a plurality of sounding reference signal resource indicators (SRIs) associated with the at least one antenna panel; an uplink control resource of a primary cell; or an uplink control resource of a physical uplink control channel (PUCCH) secondary cell. ### Claim 27 (depends on 19) The wireless device of claim 19, wherein the MPE P-MPR value is based on at least one of: a reference signal received power associated with at least one antenna panel associated with the secondary cell; a transmission signal format for transmission via the at least one antenna panel; or a proximity detection associated with the at least one antenna panel. ### Claim 28 A base station comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, configure the base station to: transmit at least one message indicating: a power reduction threshold for reporting maximum permissible exposure (MPE) power management maximum power reduction (P-MPR); and at least one secondary cell; and receive a report indicating: an MPE P-MPR value associated with a secondary cell of the at least one secondary cell; and that the power reduction threshold has been satisfied by the MPE P-MPR value. ### Claim 29 (depends on 28) The base station of claim 28, wherein the MPE P-MPR value satisfies an exposure requirement for the secondary cell. ### Claim 30 (depends on 28) The base station of claim 28, wherein the instructions, when executed by the one or more processors, configure the base station to receive the report after the secondary cell is activated. ### Claim 31 (depends on 28) The base station of claim 28, wherein the report indicating that the power reduction threshold has been satisfied by the MPE P-MPR value comprises the report indicating the MPE P-MPR value is equal to or greater than the power reduction threshold. ### Claim 32 (depends on 28) The base station of claim 28, wherein the report further comprises a power headroom report (PHR) value associated with the secondary cell. ### Claim 33 (depends on 28) The base station of claim 28, wherein the instructions, when executed by the one or more processors, further configure the base station to: switch from a first uplink bandwidth part (BWP) of the secondary cell to a second uplink BWP of the secondary cell, wherein the secondary cell is associated with at least one antenna panel of a wireless device; and wherein the MPE P-MPR value is determined based on the switching and satisfies an exposure requirement associated with the at least one antenna panel. ### Claim 34 (depends on 28) The base station of claim 28, wherein the secondary cell is associated with at least one antenna panel of a wireless device, and wherein the MPE P-MPR value is determined based on a transition from a discontinuous reception (DRX) inactive time to a DRX active time and satisfies an exposure requirement associated with the at least one antenna panel. ### Claim 35 (depends on 28) The base station of claim 28, the at least one message further indicates at least one of: a plurality of transmission configuration information (TCI) states associated with at least one antenna panel associated with the secondary cell; a plurality of sounding reference signal resource indicators (SRIs) associated with the at least one antenna panel; an uplink control resource of a primary cell; or an uplink control resource of a physical uplink control channel (PUCCH) secondary cell. ### Claim 36 (depends on 28) The base station of claim 28, wherein the MPE P-MPR value is based on at least one of: a reference signal received power associated with at least one antenna panel associated with the secondary cell; a transmission signal format for transmission via the at least one antenna panel; or a proximity detection associated with the at least one antenna panel. ### Claim 37 A non-transitory computer-readable medium storing instructions that, when executed, configure a wireless device to: receive at least one message indicating: a power reduction threshold for reporting maximum permissible exposure (MPE) power management maximum power reduction (P-MPR); and at least one secondary cell; and based on the power reduction threshold being satisfied by an MPE P-MPR value associated with a secondary cell of at least one secondary cell, transmit a report comprising the MPE P-MPR value. ### Claim 38 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the instructions, when executed, further configure the wireless device to determine, based on an exposure requirement for the secondary cell, the MPE P-MPR value. ### Claim 39 (depends on 37) The non-transitory computer-readable medium of claim 37, wherein the power reduction threshold being satisfied by the MPE P-MPR value comprises the MPE P-MPR value being equal to or greater than the power reduction threshold. ### Claim 40 A non-transitory computer-readable medium storing instructions that, when executed, configure a base station to: transmit at least one message indicating: a power reduction threshold for reporting maximum permissible exposure (MPE) power management maximum power reduction (P-MPR); and at least one secondary cell; and receive a report indicating: an MPE P-MPR value associated with a secondary cell of the at least one secondary cell; and that the power reduction threshold has been satisfied by the MPE P-MPR value. ### Claim 41 (depends on 40) The non-transitory computer-readable medium of claim 40, wherein the MPE P-MPR value satisfies an exposure requirement for the secondary cell. ### Claim 42 (depends on 40) The non-transitory computer-readable medium of claim 40, wherein the report indicating that the power reduction threshold has been satisfied by the MPE P-MPR value comprises the report indicating that the MPE P-MPR value is equal to or greater than the power reduction threshold. ### Claim 43 A system comprising: a wireless device; and a base station; wherein the base station is configured to: transmit at least one message indicating: a power reduction threshold for reporting maximum permissible exposure (MPE) power management maximum power reduction (P-MPR); and at least one secondary cell; and wherein the wireless device is configured to: based on the power reduction threshold being satisfied by an MPE P-MPR value associated with a secondary cell of at least one secondary cell, transmit a report comprising the MPE P-MPR value. ### Claim 44 (depends on 43) The system of claim 43, wherein the wireless device is further configured to determine, based on an exposure requirement for the secondary cell, the MPE P-MPR value. ### Claim 45 (depends on 43) The system of claim 43, wherein the power reduction threshold being satisfied by the MPE P-MPR value comprises the MPE P-MPR value being equal to or greater than the power reduction threshold.