# US 2022/0046540 A1 · Apparatus and Methods for Signaling in Power Save Mode > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0046540 A1 - Document ID: US20220046540A1 - Status: Published application - Kind: A1 - Application number: 17/277,612 - Filed: 2019-08-13 - Published: 2022-02-10 - Earliest claimed: 2018-09-18 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Young Hoon Kwon; Pengfei Xia - Web page: https://patentgrep.com/patent/US20220046540A1 ## CPC - H04W 52/0232: {according to average transmission signal activity} - H04W 52/0235: {where the received signal is a power saving command} - H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping} - H04B 7/088: {using beam selection} - H04W 16/28: using beam steering - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 52/0229: {where the received signal is a wanted signal} - H04W 68/005: {Transmission of information for alerting of incoming communication} - H04W 68/02: Arrangements for increasing efficiency of notification or paging channel - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - 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) - H04B: TRANSMISSION - 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 Embodiments of this disclosure provide techniques for signaling in power save mode. In particular, a UE may identify an association between a set of time durations for paging a downlink control indicator (DCI) transmission and a wake up signal (WUS) in a set of WUSs. Paging the DCI is transmitted in a beam sweeping manner and each beam used in each time duration in the set of time durations corresponds to a respective beam used for a WUS transmission in the set of WUSs. The UE monitors a radio link quality of WUSs in the set of WUSs and, based thereon, selects a first WUS in the set of WUSs. The UE identifies a first time duration for DCI page monitoring, the first time duration corresponding to the first WUS. The UE monitors the DCI page during the first time duration. ## Claims ### Claim at position 1 1-45. (canceled) ### Claim 46 A method for signaling in power save mode, the method comprising: transmitting, by a base station, wake up signals (WUSs) to a user equipment (UE), each of the WUSs indicating to the UE to monitor a control channel of a different beam in a multi-beam operation for an associated paging message during a configured period of a paging occasion of a discontinuous reception (DRX) cycle; and transmitting, by the base station, paging messages to the UE during the paging occasion, each of the paging messages being transmitted in accordance with an associated one of the WUSs over the different beam at the configured period of the paging occasion. ### Claim 47 (depends on 1) The method of claim 1, wherein each of the paging messages is transmitted multiple times over different multi-beam operations. ### Claim 48 (depends on 1) The method of claim 1, wherein the WUSs are transmitted before a beginning of the paging occasion. ### Claim 49 (depends on 1) The method of claim 1, wherein a time gap between an end of the transmitting of the WUSs and a beginning of the transmitting of the paging messages is a non-zero time gap. ### Claim 50 (depends on 4) The method of claim 4, wherein the non-zero time gap is pre-determined in accordance with a radio resource control (RRC) protocol. ### Claim 51 (depends on 1) The method of claim 1, wherein one or more of the WUSs are transmitted during the paging occasion, each of the WUSs, excluding the one or more WUSs, being transmitted before the associated paging message is transmitted. ### Claim 52 (depends on 1) The method of claim 1, wherein a time gap between an end of transmitting of each of the WUSs and a beginning of a transmitting of the associated paging message is a non-zero time gap. ### Claim 53 (depends on 1) The method of claim 1, wherein each succeeding one of the WUSs is transmitted after an elapsed non-zero time gap from a transmission of a preceding one of the WUSs. ### Claim 54 (depends on 1) The method of claim 1, wherein each of the WUSs further indicates to the UE to monitor the control channel of the respective beam, during the paging occasion, for N consecutive DRX cycles, N being an integer greater than or equal to one. ### Claim 55 (depends on 1) The method of claim 1, wherein the WUSs include a one-to-N mapping with one or more paging occasions in multiple consecutive DRX cycles, wherein N is an integer greater than or equal to one. ### Claim 56 (depends on 1) The method of claim 1, wherein the control channel is a physical downlink control channel (PDCCH). ### Claim 57 (depends on 1) The method of claim 1, wherein each of the WUSs is transmitted over a different respective beam. ### Claim 58 (depends on 1) The method of claim 1, wherein each of the paging messages is a paging downlink control indicator (DCI). ### Claim 59 (depends on 1) The method of claim 1, wherein a length of the paging occasion corresponds to one period of beam sweeping in a multi-beam operation. ### Claim 60 (depends on 14) The method of claim 14, wherein each beam in the multi-beam operation is quasi co-located (QCL'ed) with a corresponding one of the WUSs. ### Claim 61 (depends on 14) The method of claim 14, wherein multiple beams in the multi-beam operation are quasi co-located (QCL'ed) with one of the WUSs. ### Claim 62 (depends on 14) The method of claim 14, wherein each beam in the multi-beam operation is a synchronization signal block (SSB) beam. ### Claim 63 (depends on 14) The method of claim 14, wherein each of the WUSs further indicates to the UE to monitor a control channel of a second different beam in the multi-beam operation for a second associated paging message during a second configured period of the paging occasion of the discontinuous reception (DRX) cycle. ### Claim 64 (depends on 1) The method of claim 1, wherein each of the WUSs further indicates to the UE that the paging messages are to be transmitted to the UE during the paging occasion. ### Claim 65 (depends on 1) The method of claim 1, wherein each of the WUSs further indicates to the UE that the paging messages are not to be transmitted to the UE during the paging occasion. ### Claim 66 (depends on 1) The method of claim 1, wherein each of the WUSs further indicates to the UE an associated identifier (ID) of an intended UE associated with the WUS. ### Claim 67 (depends on 1) The method of claim 1, wherein at least two of the WUSs are transmitted to the UE using a different frequency resource. ### Claim 68 (depends on 1) The method of claim 1, wherein at least two of the WUSs are transmitted to the UE using the same frequency resource. ### Claim 69 (depends on 1) The method of claim 1, wherein at least two of the WUSs are transmitted using the same sequence. ### Claim 70 (depends on 1) The method of claim 1, wherein at least two of the WUSs are transmitted using a different sequence. ### Claim 71 An apparatus comprising: a processor; and a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to: transmit wake up signals (WUSs) to a user equipment (UE), each of the WUSs indicating to the UE to monitor a control channel of a different beam in a multi-beam operation for an associated paging message during a configured period of a paging occasion of a discontinuous reception (DRX) cycle; and transmit paging messages to the UE during the paging occasion, each of the paging messages being transmitted in accordance with an associated one of the WUSs over the different beam at the configured period of the paging occasion.