# US 10,771,192 B2 · Power saving in narrowband devices by early termination of decoding of communication channels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,771,192 B2 - Document ID: US10771192B2 - Status: Granted - Kind: B2 - Application number: 16/045,589 - Filed: 2018-07-25 - Published: 2019-01-31 - Granted: 2020-09-08 - Earliest claimed: 2017-07-31 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Raghu Hanumantha Gowda; Gowrisankar Somichetty; Mangesh Shete; Swarupa Gandhi Vudata; Siva Kishore Reddy Yerrapareddy; Karthik Pavan Krishna Bhogaraju; Sathish Machukari; Nilotpal Dhar; Chun-Hao Hsu; Avinash Manda; Shashidhar Vummintala; Vivek Padi; Bishal Maskey; Vishu Kumar; Bharath Sakinala; Venugopal Ramamurthy; Vijayvaradharaj Tirucherai Muralidharan - Web page: https://patentgrep.com/patent/US10771192B2 ## CPC - H04L 1/0051: {Stopping criteria} - H04L 1/0053: {specially adapted for power saving} - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 52/0219: {where the power saving management affects multiple terminals} - H04W 52/0229: {where the received signal is a wanted signal} - H04W 52/0232: {according to average transmission signal activity} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/20: Control channels or signalling for resource management - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - Y02D 30/70: in wireless communication networks - 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) - 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 Techniques and apparatus for early termination of decoding of communication channels for power saving in narrowband devices are provided. One technique includes monitoring for one or more first repetitions of at least one communication channel from a base station. The device determines, based on the monitoring, whether to refrain from monitoring for one or more second repetitions of the at least one communication channel. The device enters a low power mode if the determination is to refrain from monitoring for the one or more second repetitions of the at least one communication channel. ## Claims ### Claim 1 A method for wireless communications by a user equipment (UE), comprising: determining a first number of repetitions of at least one control channel communication from a base station to monitor based at least in part on a channel quality between the UE and the base station, wherein the first number of repetitions is less than a second number of repetitions of the at least one control channel communication configured for the UE; monitoring for the first number of repetitions of the at least one control channel communication from the base station; after monitoring for the first number of repetitions of the at least one control channel communication, refraining from monitoring for one or more additional repetitions of the at least one control channel communication; and entering a low power mode during the one or more additional repetitions of the at least one control channel communication. ### Claim 2 (depends on 1) The method of claim 1, wherein the first number of repetitions of the at least one control channel communication is an estimated number of repetitions for successfully decoding the at least one control channel communication based on the channel quality between the UE and the base station. ### Claim 3 (depends on 1) The method of claim 1, wherein the first number of repetitions corresponds to one repetition hypothesis level of a plurality of repetition hypothesis levels, each repetition hypothesis level being associated with a different channel quality between the UE and the base station. ### Claim 4 (depends on 1) The method of claim 1, further comprising detecting one or more decoding failures of the at least one control channel communication during the first number of repetitions of the at least one control channel communication, wherein refraining from monitoring for the one or more additional repetitions is in response to detecting the one or more decoding failures. ### Claim 5 (depends on 1) The method of claim 1, further comprising: refraining from monitoring for one or more repetitions of at least one data channel communication from the base station after detecting that the channel quality between the UE and the base station is below a threshold; and entering the low power mode during the one or more repetitions of the at least one data channel communication. ### Claim 6 (depends on 5) The method of claim 5, wherein the data channel comprises at least one of a machine type communication physical downlink shared channel (MPDSCH) or a narrowband physical downlink shared channel (NPDSCH). ### Claim 7 (depends on 1) The method of claim 1, wherein the control channel comprises at least one of a machine type communication physical downlink control channel (MPDCCH) or a narrowband physical downlink control channel (NPDCCH). ### Claim 8 (depends on 1) The method of claim 1, wherein entering the low power mode is in response to determining that a number of the one or more additional repetitions of the at least one control channel communication is greater than a threshold. ### Claim 9 An apparatus for wireless communication, comprising: means for determining a first number of repetitions of at least one control channel communication from a base station to monitor based at least in part on a channel quality between the apparatus and the base station, wherein the first number of repetitions is less than a second number of repetitions of the at least one control channel communication configured for the apparatus; means for monitoring for the first number of repetitions of the at least one control channel communication from the base station; means for refraining from monitoring for one or more additional repetitions of the at least one control channel communication, after monitoring for the first number of repetitions of the at least one control channel communication; and means for entering a low power mode during the one or more additional repetitions of the at least one control channel communication. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the first number of repetitions of the at least one control channel communication is an estimated number of repetitions for successfully decoding the at least one control channel communication based on the channel quality between the apparatus and the base station. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the first number of repetitions corresponds to one repetition hypothesis level of a plurality of repetition hypothesis levels, each repetition hypothesis level being associated with a different channel quality between the apparatus and the base station. ### Claim 12 (depends on 9) The apparatus of claim 9, further comprising means for detecting one or more decoding failures of the at least one control channel communication during the first number of repetitions of the at least one control channel communication, wherein the means for refraining refrains from monitoring for the one or more additional repetitions in response to detecting the one or more decoding failures. ### Claim 13 (depends on 9) The apparatus of claim 9, further comprising: means for refraining from monitoring for one or more repetitions of at least one data channel communication from the base station after detecting that the channel quality between the apparatus and the base station is below a threshold; and means for entering the low power mode during the one or more repetitions of the at least one data channel communication. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein the data channel comprises at least one of a machine type communication physical downlink shared channel (MPDSCH) or a narrowband physical downlink shared channel (NPDSCH). ### Claim 15 (depends on 9) The apparatus of claim 9, wherein the control channel comprises at least one of a machine type communication physical downlink control channel (MPDCCH) or a narrowband physical downlink control channel (NPDCCH). ### Claim 16 (depends on 9) The apparatus of claim 9, wherein the means for entering enters the low power mode in response to determining that a number of the one or more additional repetitions of the at least one control channel communication is greater than a threshold. ### Claim 17 An apparatus for wireless communications, comprising: at least one processor; memory coupled to the at least one processor, the memory comprising instructions executable by the at least one processor to cause the apparatus to: determine a first number of repetitions of at least one control channel communication from a base station to monitor based at least in part on a channel quality between the apparatus and the base station, wherein the first number of repetitions is less than a second number of repetitions of the at least one control channel communication configured for the apparatus; monitor for the first number of repetitions of the at least one control channel communication from the base station; after monitoring for the first number of repetitions of the at least one control channel communication, refrain from monitoring for one or more additional repetitions of the at least one control channel communication; and enter a low power mode during the one or more additional repetitions of the at least one control channel communication. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the first number of repetitions of the at least one control channel communication is an estimated number of repetitions for successfully decoding the at least one control channel communication based on the channel quality between the apparatus and the base station. ### Claim 19 (depends on 17) The apparatus of claim 17, wherein the first number of repetitions corresponds to one repetition hypothesis level of a plurality of repetition hypothesis levels, each repetition hypothesis level being associated with a different channel quality between the apparatus and the base station. ### Claim 20 (depends on 17) The apparatus of claim 17, the memory further comprising instructions executable by the at least one processor to: detect one or more decoding failures of the at least one control channel communication during the first number of repetitions of the at least one control channel communication; and refrain from monitoring for the one or more additional repetitions in response to detecting the one or more decoding failures. ### Claim 21 (depends on 17) The apparatus of claim 17, the memory further comprising instructions executable by the at least one processor to cause the apparatus to: refrain from monitoring for one or more repetitions of at least one data channel communication from the base station after detecting that the channel quality between the apparatus and the base station is below a threshold; and enter the low power mode during the one or more repetitions of the at least one data channel communication. ### Claim 22 (depends on 21) The apparatus of claim 21, wherein the data channel comprises at least one of a machine type communication physical downlink shared channel (MPDSCH) or a narrowband physical downlink shared channel (NPDSCH). ### Claim 23 (depends on 17) The apparatus of claim 17, wherein the control channel comprises at least one of a machine type communication physical downlink control channel (MPDCCH) or a narrowband physical downlink control channel (NPDCCH). ### Claim 24 (depends on 17) The apparatus of claim 17, the memory further comprising instructions executable by the at least one processor to: exit the low power mode in response to determining that a number of the one or more additional repetitions of the at least one control channel communication is greater than a threshold. ### Claim 25 A non-transitory computer-readable medium having computer executable code stored thereon for performing a method for wireless communications by an apparatus, the method comprising: determining a first number of repetitions of at least one control channel communication from a base station to monitor based at least in part on a channel quality between the apparatus and the base station, wherein the first number of repetitions is less than a second number of repetitions of the at least one control channel communication configured for the apparatus; monitoring for the first number of repetitions of the at least one control channel communication from the base station; after monitoring for the first number of repetitions of the at least one control channel communication, refraining from monitoring for one or more additional repetitions of the at least one control channel communication; and entering a low power mode during the one or more additional repetitions of the at least one control channel communication. ### Claim 26 (depends on 25) The non-transitory computer-readable medium of claim 25, wherein the first number of repetitions of the at least one control channel communication is an estimated number of repetitions for successfully decoding the at least one control channel communication based on the channel quality between the apparatus and the base station. ### Claim 27 (depends on 25) The non-transitory computer-readable medium of claim 25, wherein the first number of repetitions corresponds to one repetition hypothesis level of a plurality of repetition hypothesis levels, each repetition hypothesis level being associated with a different channel quality between the apparatus and the base station. ### Claim 28 (depends on 25) The non-transitory computer-readable medium of claim 25, the method further comprising detecting one or more decoding failures of the at least one control channel communication during the first number of repetitions of the at least one control channel communication, wherein refraining from monitoring for the one or more additional repetitions is in response to detecting the one or more decoding failures. ### Claim 29 (depends on 25) The non-transitory computer-readable medium of claim 25, the method further comprising: refraining from monitoring for one or more repetitions of at least one data channel communication from the base station after detecting that the channel quality between the apparatus and the base station is below a threshold; and entering the low power mode during the one or more repetitions of the at least one data channel communication. ### Claim 30 (depends on 25) The non-transitory computer-readable medium of claim 25, wherein entering the low power mode is in response to determining that a number of the one or more additional repetitions of the at least one control channel communication is greater than a threshold.