# US 2021/0345245 A1 · Method and apparatus for wake-up signals > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345245 A1 - Document ID: US20210345245A1 - Status: Published application - Kind: A1 - Application number: 17/280,032 - Filed: 2018-11-12 - Published: 2021-11-04 - Earliest claimed: 2018-11-12 - Assignees: Lenovo (Beijing) Limited - Applicants: Lenovo (Beijing) Limited - Inventors: Yingying Li; Zhi Yan; Haipeng Lei; Hongmei Liu; Haiming Wang - Web page: https://patentgrep.com/patent/US20210345245A1 ## CPC - H04W 52/0219: {where the power saving management affects multiple terminals} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 12/12: Arrangements for remote connection or disconnection of substations or of equipment thereof - H04W 52/0229: {where the received signal is a wanted signal} - H04W 52/0235: {where the received signal is a power saving command} - H04W 68/005: {Transmission of information for alerting of incoming communication} - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - 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) - 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 Method and apparatus for UE group wake up signals are disclosed. The apparatus includes a processor that determines a first time slot (w0) and a first frequency location for a first wake up signal; and a transmitter that transmits the first wake up signal starting from the first time slot (w0) and the first frequency location; wherein the first wake up signal is associated with a paging message and ends at a second time slot minus one (g0-1) with a first maximal duration; wherein a first time offset of the second time slot (g0) and a start of a time slot of the paging message is determined by at least one of: a second time offset of the second time slot to a third time slot for a second wake up signal, a second maximal duration of the second wake up signal, a presence of the second wake up signal, and a paged group number associated with the paging message; wherein the transmitter further transmits the paging message. ## Claims ### Claim 1 (canceled) ### Claim 2 (canceled) ### Claim 3 (canceled) ### Claim 4 (canceled) ### Claim 5 (canceled) ### Claim 6 (canceled) ### Claim 7 (canceled) ### Claim 8 (canceled) ### Claim 9 (canceled) ### Claim 10 (canceled) ### Claim 11 (canceled) ### Claim 12 (canceled) ### Claim 13 (canceled) ### Claim 14 (canceled) ### Claim 15 An apparatus comprising: a processor that determines a first time slot and a first frequency location for a first wake up signal; and a receiver that receive the first wake up signal starting from the first time slot and the first frequency location; wherein the first wake up signal is associated with a paging message and ends at a second time slot minus one with a first maximal duration; wherein a first time offset of the second time slot and a start of a time slot of the paging message is determined by at least one of: a second time offset of the second time slot to a third time slot for a second wake up signal; a second maximal duration of the second wake up signal; a presence of the second wake up signal; and a paged group number associated with the paging message; wherein the receiver further receives the paging message. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the receiver further receives the second wake up signal from the third time slot and ends at a fourth time slot minus one with the second maximal duration. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the first time offset is equal to the second time offset plus the second maximal duration of the second wake up signal and a third time offset of the fourth time slot to the start time slot of the paging message. ### Claim 18 (depends on 15) The apparatus of claim 15, wherein the first time offset is equal to a third time offset of the fourth time slot to the start time slot of the paging message. ### Claim 19 (depends on 16) The apparatus of claim 16, wherein the second time offset is determined by higher layers, the third time offset, and a scaling factor, and the second time offset is fixed. ### Claim 20 (canceled) ### Claim 21 (canceled) ### Claim 22 (canceled) ### Claim 23 (canceled) ### Claim 24 (canceled) ### Claim 25 (canceled) ### Claim 26 (canceled) ### Claim 27 (depends on 15) The apparatus of claim 15, wherein the paged group number associated with the paging message is more than 2, the first time offset is equal to the second time offset plus the second maximal duration of the second wake up signal and a third time offset of the fourth time slot to the start time slot of the paging message. ### Claim 28 (depends on 15) The apparatus of claim 15, wherein the frequency location of the first wake up signal is the same as a frequency location of the second wake up signal; and the frequency location of the first wake up signal is determined by a group id and the frequency location of the second wake up signal. ### Claim 29 A method comprising: determining, by a processor, a first time slot and a first frequency location for a first wake up signal; transmitting, by a transmitter, the first wake up signal starting from the first time slot and the first frequency location; and transmitting, by the transmitter, the paging message; wherein the first wake up signal is associated with a paging message and ends at a second time slot minus one with a first maximal duration; wherein a first time offset of the second time slot and a start of a time slot of the paging message is determined by at least one of: a second time offset of the second time slot to a third time slot for a second wake up signal; a second maximal duration of the second wake up signal; a presence of the second wake up signal; and a paged group number associated with the paging message. ### Claim 30 (depends on 29) The method of claim 29, further comprising transmitting, by the transmitter, the second wake up signal from the third time slot and ends at a fourth time slot minus one with the second maximal duration. ### Claim 31 (depends on 30) The method of claim 30, wherein the first time offset is equal to the second time offset plus the second maximal duration of the second wake up signal and a third time offset of the fourth time slot to the start time slot of the paging message. ### Claim 32 (depends on 29) The method of claim 29, wherein the first time offset is equal to a third time offset of the fourth time slot to the start time slot of the paging message. ### Claim 33 (depends on 30) The apparatus of claim 30, wherein the second time offset is determined by higher layers, the third time offset, and a scaling factor, and the second time offset is fixed. ### Claim 34 (canceled) ### Claim 35 (canceled) ### Claim 36 (canceled) ### Claim 37 (canceled) ### Claim 38 (canceled) ### Claim 39 (canceled) ### Claim 40 (canceled) ### Claim 41 (depends on 29) The method of claim 29, wherein the paged group number associated with the paging message is more than 2, the first time offset is equal to the second time offset plus the second maximal duration of the second wake up signal and a third time offset of the fourth time slot to the start time slot of the paging message. ### Claim 42 (depends on 29) The method of claim 29, wherein the frequency location of the first wake up signal is the same as a frequency location of the second wake up signal; and the frequency location of the first wake up signal is determined by a group id and the frequency location of the second wake up signal. ### Claim 43 A method comprising: determining, by a processor, a first time slot and a first frequency location for a first wake up signal; receiving, by a receiver, the first wake up signal starting from the first time slot and the first frequency location; and receiving, by the receiver, the paging message; wherein the first wake up signal is associated with a paging message and ends at a second time slot minus one with a first maximal duration; wherein a first time offset of the second time slot and a start of a time slot of the paging message is determined by at least one of: a second time offset of the second time slot to a third time slot for a second wake up signal; a second maximal duration of the second wake up signal; a presence of the second wake up signal; and a paged group number associated with the paging message. ### Claim 44 (depends on 43) The method of claim 43, further comprising receiving, by the receiver, the second wake up signal from the third time slot and ends at a fourth time slot minus one with the second maximal duration. ### Claim 45 (depends on 44) The method of claim 44, wherein the first time offset is equal to the second time offset plus the second maximal duration of the second wake up signal and a third time offset of the fourth time slot to the start time slot of the paging message. ### Claim 46 (depends on 43) The method of claim 43, wherein the first time offset is equal to a third time offset of the fourth time slot to the start time slot of the paging message. ### Claim 47 (depends on 44) The apparatus of claim 44, wherein the second time offset is determined by higher layers, the third time offset, and a scaling factor, and the second time offset is fixed. ### Claim 48 (canceled) ### Claim 49 (canceled) ### Claim 50 (canceled) ### Claim 51 (canceled) ### Claim 52 (canceled) ### Claim 53 (canceled) ### Claim 54 (canceled) ### Claim 55 (canceled) ### Claim 56 (depends on 43) The method of claim 43, wherein the frequency location of the first wake up signal is the same as a frequency location of the second wake up signal; and the frequency location of the first wake up signal is determined by a group id and the frequency location of the second wake up signal.