Adaptation of ue lp-wur operation for different coverage conditions

Abstract

A method performed by a UE in communication with a network, includes determining if a condition associated with the communication with the network is satisfied, in response to the condition being satisfied, sending a report to the network, the report including a configuration of a low power wake up signal (LP-WUS) for the network to transmit the LP-WUS in accordance with, and in response to the condition not being satisfied, suspending sending of the report to the network until the condition is satisfied.

Description

ADAPTATION OF UE LP-WUR OPERATION FOR DIFFERENT COVERAGECONDITIONSCROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims benefit and priority to U.S. Provisional Application No. 63 / 520,005, filed August 16, 2023, entitled “Adaptation of UE LP-WUR Operation for Different Coverage Conditions.” The content of which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] This disclosure relates generally to wireless technology and more particularly to user equipment (UE) adaptation of low power wake up receiver (LP-WUR) operation for different coverage conditions.BACKGROUND

[0003] Fifth generation mobile network (5G) is a wireless standard that aims to improve upon data transmission speed, reliability, availability, and more. The wireless standard includes numerous procedures that may be implemented by a transmitting device or a receiving device that improves the latency, the speed, and the reliability of uplink and downlink transmissions.SUMMARY

[0004] Aspects of the present disclosure relate to 5G new radio (NR) operating in the licensed spectrum or in the shared and unlicensed spectrum (NR-U).

[0005] In an aspect, a method is performed by a UE in communication with a network, that comprises determining if a condition associated with the communication with the network is satisfied; in response to the condition being satisfied, sending a report to the network, the report including a configuration of a low power wake up signal (LP-WUS) for the network to transmit the LP-WUS in accordance with; and in response to the condition not being satisfied, suspending sending of the report until the condition is satisfied.

[0006] The condition may be satisfied in response to a reference signal measurement being below a threshold, or in response to a change in the reference signal measurement satisfying a second threshold.

[0007] The LP-WUS configuration may include one or more of: a time duration of the LP-WUS, a minimum time gap between frequency hops of the LP-WUS, or a transmission power of the LP-WUS.

[0008] The report may be sent to the network using a main radio of the UE. For example, the UE may have a dedicated low-power radio for detecting a LP-WUS and a main radio used for general uplink and downlink.

[0009] In an RRC connected state, the UE may send the report in media access control (MAC) control element (CE) using an existing active uplink (UL) grant.

[0010] In response to the UE not having the existing active UL grant, the UE sends a scheduling request (SR) to the network to obtain an active UL grant and sends the report to the network over MAC CE over the obtained active UL grant. The SR may be a dedicated scheduling request for LP-WUS operation, configured per cell group or per UE. The dedicated SR may have a priority that is lower than a link recovery request SR, and that is equal than or higher than a data scheduling request SR.

[0011] In response to the condition being satisfied, sending the report to the network may include, when the UE is in radio resource control (RRC) idle state, sending a request to the network over physical random access channel (PRACH) to move the UE into RRC connected mode and obtaining a UL grant in the RRC connected mode for sending the report.

[0012] Additionally, or alternatively, the report may be sent to the network over a physical random access channel (PRACH). A random access channel (RACH) resource of the PRACH may be partitioned into a plurality of groups, each group being associated with a different LP-WUS configuration, wherein each LP-WUS configuration has a unique time duration of the LP-WUS. A random access channel (RACH) resource of the PRACH may be partitioned with one or more of a time domain resource allocation, a frequency domain resource allocation, a prach-Configurationlndex, or a PRACH preamble index.

[0013] The UE may use a contention free random access or contention based random access to send the report to the network. Similarly, the UE may use 4-step RACH, or 2- step RACH to send the report to the network.

[0014] In an aspect, a method, performed by a UE in communication with a network, comprises: monitoring a quality or reliability associated with low power wake up signal (LP-WUS); determining if a condition associated with the quality or reliability of the LP- WUS is satisfied; and in response to the condition being satisfied, performing one or moreoperations including a) sending a link failure report to the network, b) using a main radio to monitor a physical downlink control channel (PDCCH), performing radio resource management (RRM) and disabling a low power wake-up radio (LP-WUR) until the link failure is recovered, or c) using the link failure as input to a radio link monitoring.

[0015] The quality or the reliability may include a probability of a missed detection of the LP-WUS. Monitoring the quality or the reliability may include incrementing a counter each time the probability of the missed detection exceeds a threshold and resetting the counter in response to the probability of the missed detection not exceeding the threshold.

[0016] Monitoring the quality or reliability associated with the LP-WUS may include monitoring a signal including one or more of: a synchronization signal block (SSB), or channel state information reference signal (CSI-RS), LP-WUS part 1 for the purpose of PDCCH early indication, or LP-WUS part 2 for the purpose of device time / frequency tacking, and / or, channel quality measurement for mobility.

[0017] Sending the link failure report to the network may be performed over media access control (MAC) control element (CE) when the UE is in idle state, or over physical random access channel (PRACH). Additionally, or alternatively, sending the link failure report to the network may be performed over physical random access channel (PRACH) when the UE is in radio resource control (RRC) idle state.

[0018] In an aspect, a method performed by a network in communication with a UE comprises sending, to the UE, a plurality of configurations associated with a low power wake up signal (LP-WUS), each of the plurality of configurations corresponding to a respective coverage, and each of the plurality of configurations including at least one of a time duration of the LP-WUS, a transmission power of the LP-WUS, or spatial beam parameters of the LP-WUS.

[0019] The method may further comprise receiving, by the network, a report from the UE that includes a request to transmit the LP-WUS in accordance with a selected one of the plurality of configurations. The method may further comprise, in response to receiving the report, transmitting the LP-WUS in accordance with the one of the plurality of LP- WUS configurations.

[0020] The method may further comprise receiving, from the UE, a report that includes an indicator of whether the UE supports LP-WUS for each radio resource control (RRC) state of the UE.

[0021] The method may further comprise receiving, from the UE, a report that includes a request from the UE to perform dynamic LP-WUS operation, wherein the report is received through one of: a radio resource control (RRC) message, MAC-CE signaling, or through layer 1 (LI) signaling.

[0022] Sending the plurality of configurations to the UE may comprise broadcasting the plurality of configurations to a plurality of UEs over system information (SI). Sending the plurality of configurations to the UE may be performed through radio resource control (RRC) configuration.

[0023] In an aspect, a method, performed by a UE, includes operating as a low power wake-up receiver (LP-WUR) to monitor for presence of a low power wake-up signal (LP-WUS); while operating as the LP-WUR, deactivating a main radio of the UE including i) suspending downlink reception in each component carrier, and ii) suspending uplink transmission in each component carrier; and in response to detecting presence of the LP-WUS, activating the main radio. In response to operating in unlicensed spectrum, the UE may treat the LP-WUS as a small control signal and operates as the LW-WUR under listen before talk (LBT) category 1. Additionally, or alternatively, in response to operating in unlicensed spectrum, the UE operates as the LP- WUR under LBT category 2 and treats the LP-WUS as high priority and reduces a sensing requirement.

[0024] In an aspect, a user equipment (UE) device that is in communication with a network, comprises a processor that is configured to perform the method described above. In an aspect, a base station comprises a transceiver configured to communicate with a user equipment (UE), and a processor communicatively coupled to the transceiver and configured to perform the methods described herein from the perspective of the network. In an aspect, a processor (e.g., a baseband processor) of a UE is configured to perform the methods described herein from the perspective of the UE.

[0025] Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In the figures of the accompanying drawings, aspects described are illustrated by way of example and not by limitation.

[0027] FIG. 1 illustrates an example wireless communication system, according to an aspect.

[0028] FIG. 2 illustrates uplink and downlink communications, according to an aspect.

[0029] FIG. 3 illustrates an example block diagram of a user equipment (UE), according to an aspect.

[0030] FIG. 4 illustrates an example block diagram of a base station (BS), according to an aspect.

[0031] FIG. 5 illustrates an example block diagram of cellular communication circuitry, according to an aspect.

[0032] FIG. 6 illustrates an example of a UE in communication with a network with respect to LP-WUR and LP-WUS, according to an aspect.

[0033] FIG. 7 illustrates an example of UE report enhancement with respect to LP- WUS, according to an aspect.

[0034] FIG. 8 shows a method performed by a UE to send a report associated with LP- WUS, according to an aspect.

[0035] FIG. 9 shows an example of a workflow performed by a UE to send a report to a network with respect to LP-WUS, in accordance with an aspect

[0036] FIG. 10 shows a method performed by a UE with respect to LW-WUR and a potential link failure, according to an aspect.

[0037] FIG. 11 illustrates an example of a UE and network with respect to LP-WUS configuration enhancement, in accordance with an aspect.

[0038] FIG. 12 shows a method performed by a UE in connection to operation as a LP- WUR, according to an aspect.DETAILED DESCRIPTION

[0039] Aspects described relate to operation of low power wake up signal (LP-WUS) or low power wake up receiver (LP-WUR) in different conditions with respect to a variety of considerations. It will be apparent, however, to one skilled in the art, that aspects of the present disclosure may be practiced variations of the specific details described. In other instances, well-known components, structures, and techniques have not been shown in detail in order not to obscure the understanding of this description.

[0040] Reference in the specification to “some aspects” or “an aspect” means that a particular feature, structure, or characteristic described in connection with the aspect can be included in at least one aspect of the disclosure. The appearances of the phrase “in some aspects” in various places in the specification do not necessarily all refer to the same aspect.

[0041] In the following description and claims, the terms “coupled” and “connected,” along with their derivatives, may be used. “Coupled” is used to indicate that two or more elements, which may or may not be in direct physical or electrical contact with each other, co-operate or interact with each other. “Connected” is used to indicate the establishment of communication between two or more elements that are coupled with each other.

[0042] The processes depicted in the figures that follow, are performed by processing logic that comprises hardware (e.g., circuitry, dedicated logic, etc.), software (such as is run on a general-purpose computer system or a dedicated machine), or a combination of both. Although the processes are described below in terms of some sequential operations, it should be appreciated that some of the operations described may be performed in different order. Moreover, some operations may be performed in parallel rather than sequentially.

[0043] The terms “server,” “client,” and “device” are intended to refer generally to data processing systems rather than specifically to a particular form factor for the server, client, and / or device.

[0044] FIG. 1 illustrates a simplified example of a wireless communication system, according to some aspects. It is noted that the system of FIG. 1 is merely one example of a possible system, and that features of this disclosure may be implemented in any of various systems, as desired.

[0045] As shown, the example wireless communication system includes a base station 102A which communicates over a transmission medium with one or more user devices 106A, 106B, etc., through 106N. Each of the user devices may be referred to as a “user equipment” (UE).

[0046] The base station (BS) 102A may be a base transceiver station (BTS) or cell site (a “cellular base station”) and may include hardware that enables wireless communication with the UEs 106 A through 106N.

[0047] The communication area (or coverage area) of the base station may be referred to as a “cell.” The base station 102 A and the UEs 106 may be configured to communicateover the transmission medium using any of various radio access technologies (RATs), also referred to as wireless communication technologies, or telecommunication standards, such as GSM, UMTS (associated with, for example, WCDMA or TD-SCDMA air interfaces), LTE, LTE-Advanced (LTE-A), 5G new radio (5G NR), HSPA, 3GPP2 CDMA2000 (e.g., IxRTT, IxEV-DO, HRPD, eHRPD), etc. Note that if the base station 102A is implemented in the context of LTE, it may alternately be referred to as an ‘eNodeB’ or ‘eNB’. Note that if the base station 102 A is implemented in the context of 5G NR, it may alternately be referred to as ‘gNodeB’ or ‘gNB’.

[0048] As shown, the base station 102A may also be equipped to communicate with a network 100 (e.g., a core network of a cellular service provider, a telecommunication network such as a public switched telephone network (PSTN), and / or the Internet, among various possibilities). Thus, the base station 102A may facilitate communication between the user devices and / or between the user devices and the network 100. In particular, the cellular base station 102A may provide UEs 106 with various telecommunication capabilities, such as voice, SMS and / or data services.

[0049] Base station 102A and other similar base stations (such as base stations 102B . . . 102N) operating according to the same or a different cellular communication standard may thus be provided as a network of cells, which may provide continuous or nearly continuous overlapping service to UEs 106A-N and similar devices over a geographic area via one or more cellular communication standards.

[0050] Thus, while base station 102A may act as a “serving cell” for UEs 106A-N as illustrated in FIG. 1, each UE 106 may also be capable of receiving signals from (and possibly within communication range of) one or more other cells (which might be provided by base stations 102B-N and / or any other base stations), which may be referred to as “neighboring cells”. Such cells may also be capable of facilitating communication between user devices and / or between user devices and the network 100. Such cells may include “macro” cells, “micro” cells, “pico” cells, and / or cells which provide any of various other granularities of service area size. For example, base stations 102A-B illustrated in FIG. 1 might be macro cells, while base station 102N might be a micro cell. Other configurations are also possible.

[0051] In some aspects, base station 102 A may be a next generation base station, e.g., a 5G New Radio (5G NR) base station, or “gNB”. In some aspects, a gNB may be connected to a legacy evolved packet core (EPC) network and / or to a NR core (NRC)network. In addition, a gNB cell may include one or more transition and reception points (TRPs). In addition, a UE capable of operating according to 5G NR may be connected to one or more TRPs within one or more gNBs.

[0052] Note that a UE 106 may be capable of communicating using multiple wireless communication standards. For example, the UE 106 may be configured to communicate using a wireless networking (e.g., Wi-Fi) and / or peer-to-peer wireless communication protocol (e.g., Bluetooth, Wi-Fi peer-to-peer, etc.) in addition to at least one cellular communication protocol (e.g., GSM, UMTS (associated with, for example, WCDMA or TD-SCDMA air interfaces), LTE, LTE-A, 5G NR, HSPA, 3GPP2 CDMA2000 (e.g, IxRTT, IxEV-DO, HRPD, eHRPD), etc.). The UE 106 may also or alternatively be configured to communicate using one or more global navigational satellite systems (GNSS, e.g, GPS or GLONASS), one or more mobile television broadcasting standards (e.g, ATSC-M / H or DVB-H), and / or any other wireless communication protocol, if desired. Other combinations of wireless communication standards (including more than two wireless communication standards) are also possible.

[0053] FIG. 2 illustrates UE 106A that can be in communication with a base station 102 through uplink and downlink communications, according to some aspects. The UEs may each be a device with cellular communication capability such as a mobile phone, a hand-held device, a computer or a tablet, or virtually any type of wireless device.

[0054] The UE may include a processor that is configured to execute program instructions stored in memory. The UE may perform any of the method aspects described herein by executing such stored instructions. Alternatively, or in addition, the UE may include a programmable hardware element such as an FPGA (field-programmable gate array) that is configured to perform any of the method aspects described herein, or any portion of any of the method aspects described herein.

[0055] The UE may include one or more antennas for communicating using one or more wireless communication protocols or technologies. In some aspects, the UE may be configured to communicate using, for example, CDMA2000 (IxRTT / lxEV- DO / HRPD / eHRPD) or LTE using a single shared radio and / or GSM or LTE using the single shared radio. The shared radio may couple to a single antenna, or may couple to multiple antennas (e.g, for MIMO) for performing wireless communications. In general, a radio may include any combination of a baseband processor, analog RF signal processing circuitry (e.g, including filters, mixers, oscillators, amplifiers, etc.), or digital processingcircuitry (e.g., for digital modulation as well as other digital processing). Similarly, the radio may implement one or more receive and transmit chains using the aforementioned hardware. For example, the UE 106 may share one or more parts of a receive and / or transmit chain between multiple wireless communication technologies, such as those discussed above.

[0056] In some aspects, the UE may include separate transmit and / or receive chains (e.g., including separate antennas and other radio components) for each wireless communication protocol with which it is configured to communicate. As a further possibility, the UE may include one or more radios which are shared between multiple wireless communication protocols, and one or more radios which are used exclusively by a single wireless communication protocol. For example, the UE might include a shared radio for communicating using either of LTE or 5G NR (or LTE or IxRTTor LTE or GSM), and separate radios for communicating using each of Wi-Fi and Bluetooth. Other configurations are also possible.

[0057] FIG. 3 illustrates an example simplified block diagram of a communication device 106, according to some aspects. It is noted that the block diagram of the communication device of FIG. 3 is only one example of a possible communication device. According to aspects, communication device 106 may be a UE device, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, notebook, or portable computing device), a tablet and / or a combination of devices, among other devices. As shown, the communication device 106 may include a set of components 300 configured to perform core functions. For example, this set of components may be implemented as a system on chip (SOC), which may include portions for various purposes. Alternatively, this set of components 300 may be implemented as separate components or groups of components for the various purposes. The set of components 300 may be coupled (e.g., communicatively; directly or indirectly) to various other circuits of the communication device 106.

[0058] For example, the communication device 106 may include various types of memory (e.g., including NAND flash 310), an input / output interface such as connector I / F 320 (e.g., for connecting to a computer system; dock; charging station; input devices, such as a microphone, camera, keyboard; output devices, such as speakers; etc.), the display 360, which may be integrated with or external to the communication device 106, andcellular communication circuitry 330 such as for 5G NR, LTE, GSM, etc., and short to medium range wireless communication circuitry 329 (e.g., Bluetooth™ and WLAN circuitry). In some aspects, communication device 106 may include wired communication circuitry (not shown), such as a network interface card, e.g., for Ethernet.

[0059] The cellular communication circuitry 330 may couple (e.g., communicatively; directly or indirectly) to one or more antennas, such as antennas 335 and 336 as shown. The short to medium range wireless communication circuitry 329 may also couple (e.g., communicatively; directly or indirectly) to one or more antennas, such as antennas 337 and 338 as shown. Alternatively, the short to medium range wireless communication circuitry 329 may couple (e.g., communicatively; directly or indirectly) to the antennas 335 and 336 in addition to, or instead of, coupling (e.g., communicatively; directly or indirectly) to the antennas 337 and 338. The short to medium range wireless communication circuitry 329 and / or cellular communication circuitry 330 may include multiple receive chains and / or multiple transmit chains for receiving and / or transmitting multiple spatial streams, such as in a multiple-input multiple output (MIMO) configuration.

[0060] In some aspects, as further described below, cellular communication circuitry 330 may include dedicated receive chains (including and / or coupled to, e.g., communicatively; directly or indirectly, dedicated processors and / or radios) for multiple radio access technologies (RATs) (e.g., a first receive chain for LTE and a second receive chain for 5G NR). In addition, in some aspects, cellular communication circuitry 330 may include a single transmit chain that may be switched between radios dedicated to specific RATs. For example, a first radio may be dedicated to a first RAT, e.g., LTE, and may be in communication with a dedicated receive chain and a transmit chain shared with an additional radio, e.g., a second radio that may be dedicated to a second RAT, e.g., 5GNR, and may be in communication with a dedicated receive chain and the shared transmit chain.

[0061] The communication device 106 may also include and / or be configured for use with one or more user interface elements. The user interface elements may include any of various elements, such as display 360 (which may be a touchscreen display), a keyboard (which may be a discrete keyboard or may be implemented as part of a touchscreen display), a mouse, a microphone and / or speakers, one or more cameras, one or more buttons, and / or any of various other elements capable of providing information to a user and / or receiving or interpreting user input.

[0062] The communication device 106 may further include one or more smart cards 345 that include SIM (Subscriber Identity Module) functionality, such as one or more UICC(s) (Universal Integrated Circuit Card(s)) cards 345.

[0063] As shown, the SOC 300 may include processor(s) 302, which may execute program instructions for the communication device 106 and display circuitry 304, which may perform graphics processing and provide display signals to the display 360. The processor(s) 302 may also be coupled to memory management unit (MMU) 340, which may be configured to receive addresses from the processor(s) 302 and translate those addresses to locations in memory (e.g., memory 306, read only memory (ROM) 350, NAND flash memory 310) and / or to other circuits or devices, such as the display circuitry 304, short range wireless communication circuitry 229, cellular communication circuitry 330, connector I / F 320, and / or display 360. The MMU 340 may be configured to perform memory protection and page table translation or set up. In some aspects, the MMU 340 may be included as a portion of the processor(s) 302.

[0064] As noted above, the communication device 106 may be configured to communicate using wireless and / or wired communication circuitry. The communication device 106 may also be configured to determine a physical downlink shared channel scheduling resource for a user equipment device and a base station. Further, the communication device 106 may be configured to group and select CCs from the wireless link and determine a virtual CC from the group of selected CCs. The wireless device may also be configured to perform a physical downlink resource mapping based on an aggregate resource matching patterns of groups of CCs.

[0065] As described herein, the communication device 106 may include hardware and software components for implementing the above features for determining a physical downlink shared channel scheduling resource for a communications device 106 and a base station. The processor 302 of the communication device 106 may be configured to implement part or all of the features described herein, e.g., by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), processor 302 may be configured as a programmable hardware element, such as an FPGA (Field Programmable Gate Array), or as an ASIC (Application Specific Integrated Circuit). Alternatively (or in addition) the processor 302 of the communication device 106, in conjunction with one or more of theother components 300, 304, 306, 310, 320, 329, 330, 340, 345, 350, 360 may be configured to implement part or all of the features described herein.

[0066] In addition, as described herein, processor 302 may include one or more processing elements. Thus, processor 302 may include one or more integrated circuits (ICs) that are configured to perform the functions of processor 302. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of processor(s) 302.

[0067] Further, as described herein, cellular communication circuitry 330 and short- range wireless communication circuitry 329 may each include one or more processing elements. In other words, one or more processing elements may be included in cellular communication circuitry 330 and, similarly, one or more processing elements may be included in short range wireless communication circuitry 329. Thus, cellular communication circuitry 330 may include one or more integrated circuits (ICs) that are configured to perform the functions of cellular communication circuitry 330. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of cellular communication circuitry 230. Similarly, the short-range wireless communication circuitry 329 may include one or more ICs that are configured to perform the functions of short-range wireless communication circuitry 32. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of short-range wireless communication circuitry 329.

[0068] FIG. 4 illustrates an example block diagram of a base station 102, according to some aspects. It is noted that the base station of FIG. 4 is merely one example of a possible base station. As shown, the base station 102 may include processor(s) 404 which may execute program instructions for the base station 102. The processor(s) 404 may also be coupled to memory management unit (MMU) 440, which may be configured to receive addresses from the processor(s) 404 and translate those addresses to locations in memory (e.g., memory 460 and read only memory (ROM) 450) or to other circuits or devices.

[0069] The base station 102 may include at least one network port 470. The network port 470 may be configured to couple to a telephone network and provide a plurality of devices, such as UE devices 106, access to the telephone network as described above in FIGS. 1 and 2.

[0070] The network port 470 (or an additional network port) may also or alternatively be configured to couple to a cellular network, e.g., a core network of a cellular service provider. The core network may provide mobility related services and / or other services to a plurality of devices, such as UE devices 106. In some cases, the network port 470 may couple to a telephone network via the core network, and / or the core network may provide a telephone network (e.g., among other UE devices serviced by the cellular service provider).

[0071] In some aspects, base station 102 may be a next generation base station, e.g., a 5G New Radio (5G NR) base station, or “gNB”. In such aspects, base station 102 may be connected to a legacy evolved packet core (EPC) network and / or to a NR core (NRC) network. In addition, base station 102 may be considered a 5G NR cell and may include one or more transition and reception points (TRPs). In addition, a UE capable of operating according to 5G NR may be connected to one or more TRPs within one or more gNBs. In some aspects, the base station can operate in 5G NR-U mode.

[0072] The base station 102 may include at least one antenna 434, and possibly multiple antennas. The at least one antenna 434 may be configured to operate as a wireless transceiver and may be further configured to communicate with UE devices 106 via radio 430. The antenna 434 communicates with the radio 430 via communication chain 432. Communication chain 432 may be a receive chain, a transmit chain or both. The radio 430 may be configured to communicate via various wireless communication standards, including, but not limited to, 5GNR, 5GNR-U, LTE, LTE-A, GSM, UMTS, CDMA2000, Wi-Fi, etc.

[0073] The base station 102 may be configured to communicate wirelessly using multiple wireless communication standards. In some instances, the base station 102 may include multiple radios, which may enable the base station 102 to communicate according to multiple wireless communication technologies. For example, as one possibility, the base station 102 may include an LTE radio for performing communication according to LTE as well as a 5G NR radio for performing communication according to 5G NR and 5G NR-U. In such a case, the base station 102 may be capable of operating as both an LTE base station and a 5G NR base station. As another possibility, the base station 102 may include a multi-mode radio which is capable of performing communications according to any of multiple wireless communication technologies (e.g., 5G NR and Wi-Fi, LTE and Wi-Fi, LTE and UMTS, LTE and CDMA2000, UMTS and GSM, etc ).

[0074] As described further subsequently herein, the BS 102 may include hardware and software components for implementing or supporting implementation of features described herein. The processor 404 of the base station 102 may be configured to implement or support implementation of part or all of the methods described herein, e.g., by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively, the processor 404 may be configured as a programmable hardware element, such as an FPGA (Field Programmable Gate Array), or as an ASIC (Application Specific Integrated Circuit), or a combination thereof. Alternatively (or in addition) the processor 404 of the BS 102, in conjunction with one or more of the other components 430, 432, 434, 440, 450, 460, 470 may be configured to implement or support implementation of part or all of the features described herein.

[0075] In addition, as described herein, processor(s) 404 may be comprised of one or more processing elements. In other words, one or more processing elements may be included in processor(s) 404. Thus, processor(s) 404 may include one or more integrated circuits (ICs) that are configured to perform the functions of processor(s) 404. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of processor(s) 404.

[0076] Further, as described herein, radio 430 may be comprised of one or more processing elements. In other words, one or more processing elements may be included in radio 430. Thus, radio 430 may include one or more integrated circuits (ICs) that are configured to perform the functions of radio 430. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of radio 430.

[0077] FIG. 5 illustrates an example simplified block diagram of cellular communication circuitry, according to some aspects. It is noted that the block diagram of the cellular communication circuitry of FIG. 5 is only one example of a possible cellular communication circuit. According to aspects, cellular communication circuitry 330 may be included in a communication device, such as communication device 106 described above. As noted above, communication device 106 may be a user equipment (UE) device, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, notebook, or portable computing device), a tablet and / or a combination of devices, among other devices.

[0078] The cellular communication circuitry 330 may couple (e.g., communicatively; directly or indirectly) to one or more antennas, such as antennas 335 a-b and 336 as shown (in FIG. 3). In some aspects, cellular communication circuitry 330 may include dedicated receive chains (including and / or coupled to, e.g., communicatively; directly or indirectly, dedicated processors and / or radios) for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G NR). For example, as shown in FIG. 5, cellular communication circuitry 330 may include a modem 510 and a modem 520. Modem 510 may be configured for communications according to a first RAT, e.g., such as LTE or LTE-A, and modem 520 may be configured for communications according to a second RAT, e.g., such as 5G NR.

[0079] As shown, modem 510 may include one or more processors 512 and a memory 516 in communication with processors 512. Modem 510 may be in communication with a radio frequency (RF) front end 530. RF front end 530 may include circuitry for transmitting and receiving radio signals. For example, RF front end 530 may include receive circuitry (RX) 532 and transmit circuitry (TX) 534. In some aspects, receive circuitry 532 may be in communication with downlink (DL) front end 550, which may include circuitry for receiving radio signals via antenna 335a.

[0080] Similarly, modem 520 may include one or more processors 522 and a memory 526 in communication with processors 522. Modem 520 may be in communication with an RF front end 540. RF front end 540 may include circuitry for transmitting and receiving radio signals. For example, RF front end 540 may include receive circuitry 542 and transmit circuitry 544. In some aspects, receive circuitry 542 may be in communication with DL front end 560, which may include circuitry for receiving radio signals via antenna 335b.

[0081] In some aspects, a switch 570 may couple transmit circuitry 534 to uplink (UL) front end 572. In addition, switch 570 may couple transmit circuitry 544 to UL front end 572. UL front end 572 may include circuitry for transmitting radio signals via antenna 336. Thus, when cellular communication circuitry 330 receives instructions to transmit according to the first RAT (e.g., as supported via modem 510), switch 570 may be switched to a first state that allows modem 510 to transmit signals according to the first RAT (e.g., via a transmit chain that includes transmit circuitry 534 and UL front end 572). Similarly, when cellular communication circuitry 330 receives instructions to transmit according to the second RAT (e.g., as supported via modem 520), switch 570 may be switched to asecond state that allows modem 520 to transmit signals according to the second RAT (e.g., via a transmit chain that includes transmit circuitry 544 and UL front end 572).

[0082] As described herein, the modem 510 may include hardware and software components for implementing the above features or for determining a physical downlink shared channel scheduling resource for a user equipment device and a base station, as well as the various other techniques described herein. The processors 512 may be configured to implement part or all of the features described herein, e.g., by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), processor 512 may be configured as a programmable hardware element, such as an FPGA (Field Programmable Gate Array), or as an ASIC (Application Specific Integrated Circuit). Alternatively (or in addition) the processor 512, in conjunction with one or more of the other components 530, 532, 534, 550, 570, 572, 335 and 336 may be configured to implement part or all of the features described herein.

[0083] In addition, as described herein, processors 512 may include one or more processing elements. Thus, processors 512 may include one or more integrated circuits (ICs) that are configured to perform the functions of processors 512. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of processors 512.

[0084] As described herein, the modem 520 may include hardware and software components for implementing the above features for determining a physical downlink shared channel scheduling resource for a user equipment device and a base station, as well as the various other techniques described herein. The processors 522 may be configured to implement part or all of the features described herein, e.g., by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), processor 522 may be configured as a programmable hardware element, such as an FPGA (Field Programmable Gate Array), or as an ASIC (Application Specific Integrated Circuit). Alternatively (or in addition) the processor 522, in conjunction with one or more of the other components 540, 542, 544, 550, 570, 572, 335 and 336 may be configured to implement part or all of the features described herein.

[0085] In addition, as described herein, processors 522 may include one or more processing elements. Thus, processors 522 may include one or more integrated circuits(ICs) that are configured to perform the functions of processors 522. In addition, each integrated circuit may include circuitry (e.g., first circuitry, second circuitry, etc.) configured to perform the functions of processors 522.

[0086] 5G (also referred to as new radio) supports multi-antenna transmission, beamforming, and simultaneous transmission from multiple geographically separates sites. 5G physical channels provide flexible communication between the 5G base stations and the UEs. 5G NR has specified the physical channels for 5G networks that can be used either for Downlink or Uplink communication. 5G NR physical channels used for uplink communication includes the physical uplink shared channel (PUSCH), the physical uplink control channel (PUCCH), and the physical random-access channel (PRACH). Reference signals such as demodulation reference signal DM-RS, phase tracking reference signal (PT-RS), and sounding reference signal (SRS) may be transmitted by the network or UE so that the receiving party may measure various qualities relating to the transmitter and adjust a network functionality accordingly. 5GNR supports the simultaneous transmission on PUSCH and PUCCH. PUSCH is typically used to carry the user data and optionally, can carry uplink control information (UCI).

[0087] PDSCH stands for Physical Downlink Shared Channel and is a channel used to deliver data from the base station (e.g., gNb) to the user equipment (UE) in the downlink direction. PDSCH supports high data rates and low latency for a wide range of applications and services. It uses advanced modulation and coding schemes, as well as multiple antenna techniques such as MIMO (Multiple Input Multiple Output), to maximize spectral efficiency and improve the overall performance of the network. PDSCH is also used in conjunction with other channels, such as the Physical Downlink Control Channel (PDCCH) and Physical Hybrid ARQ Indicator Channel (PHICH), to support features such as channel state information reporting, scheduling and retransmission of data packets, and HARQ (Hybrid Automatic Repeat Request) feedback. PDSCH enables the delivery of high-speed data and low-latency services to users in the downlink direction, and supports a range of advanced features and capabilities that promote efficient and reliable operation of the network.

[0088] Radio Resource Control (RRC) is a protocol layer that exists between the radio access network (RAN) and the core network in 5G. RRC is used to manage radio resources, including the establishment, maintenance, and release of radio connections between the user equipment (UE) and the base station. The RRC protocol performs several essentialfunctions including connection establishment, connection maintenance, and connection release. RRC handles the procedures for establishing a connection between the UE and the base station. This includes procedures such as random access, initial cell search, and authentication. Once a connection is established, RRC is responsible for maintaining the connection and managing the radio resources efficiently. It ensures the appropriate quality of service (QoS) for the UE and handles mobility-related events, such as handovers between cells or handovers between different types of 5G networks (e.g., from 5G New Radio to 5G Core). When the UE no longer needs the connection or if there are other reasons for releasing it, RRC handles the procedures for releasing the connection and freeing up the associated radio resources. The RRC protocol operates on top of the physical layer and the medium access control (MAC) layer in the protocol stack. It communicates with other layers in the 5G system, such as the packet data convergence protocol (PDCP), radio link control (RLC), and the user plane, to support efficient and reliable communication between the UE and the network.

[0089] RRC protocol defines several states that a UE can be in. These states determine the level of connectivity and resource allocation between the UE and the network. The RRC states in 5G are RRC IDLE, RRC INACTIVE, and RRC CONNECTED.

[0090] In RRC Idle (RRC IDLE) state, the UE is not actively connected to the network. It is not assigned any dedicated resources, and its radio interface is deactivated. The UE periodically monitors system information broadcasts from the network to stay informed about available cells and other relevant network parameters. When the UE needs to establish a connection or perform a service request, it transitions to a RRC connected state.

[0091] When the UE is in RRC inactive (RRC INACTIVE) state, it has limited 5G resources allocated and uses primarily the LTE network for connectivity. In this state, the UE can quickly transition to the RRC CONNECTED state when one or more triggering events occur, as defined by one or more standards.

[0092] RRC Connected (RRC CONNECTED) state represents an active connection between the UE and the network. It can be further divided into sub-states: a. RRC Connected lnit: The initial sub-state where the UE has just established an RRC connection with the network. b. RRC Connected: The UE is in a stable connected state, and it can exchange data and signaling with the network (e.g., over physical uplink and physical downlinkchannels). It can receive and transmit data, perform handovers, and execute various procedures. c. RRC Connected Reconfiguring: The UE is undergoing a reconfiguration of its RRC connection parameters, such as changing the radio bearer configuration or updating network configuration information. d. RRC Connected Suspend: The UE temporarily suspends its RRC connection while maintaining radio resources for a specified period. It is typically used in powersaving scenarios to conserve energy. e. RRC Connected Release: The UE is releasing its RRC connection, terminating the active connection with the network.

[0093] Each RRC state has its own specific behaviors performed by the UE and network which results in specific power consumption characteristics and signaling procedures for the state (or sub-state). The network and the UE manage RRC state transitions based on numerous factors such as network conditions, service requirements, mobility, and power optimization.

[0094] Updates to NR may consider LP-WUS and LP-WUR with objectives such as LP-WUR can be operated to process LP-WUS in place of the main radio that is currently used to process the cellular communication channel s / signals, in order to save power, layer 1 (LI) procedures and higher layer protocol changes needed to support wake-up signals, or potential UE power savings, coverage availability, latency impact, system impact, network power consumption, coexistence with non-low-power- WUR UEs, network coverage, network capacity, network resource overheat, or other objectives.

[0095] The network may send a LP-WUS (which may also be simply referred to as wake up signal) to let the UE know there is coming control, e.g., PDCCH, scheduling for the UE.

[0096] LP-WUR may include Rx processing logic for receiving and processing signals and channel related to LP-WUR. The main radio may include Tx and Rx processing logic for receiving, transmitting, and processing signals and channels other than those related to LP-WUR.

[0097] FIG. 6 illustrates an example of a UE in communication with a network with respect to LP-WUR and LP-WUS, according to an aspect.

[0098] As UE 602 may be in wireless communication with network 608 which may be an NR network. Network 608 may transmit a low power wake up signal (LP-WUS) 610 toone or more UEs in its coverage, such as UE 602. LP-WUS 610 may be transmitted to UE devices such as UE 602, enabling the UE 602 to remain in low-power mode. For example, the LP-WUS 610 may be transmitted periodically, and upon receiving the LP-WUS 610, the UE 602 may switch to main radio for regular cellular communication operation, for example, control (PDCCH) monitoring. When the UE does not detect the LP-WUS 610, the UE may keep using LP-WUR to process the future LP-WUS.

[0099] LP-WUR 604 may be implemented as a separate device component independent of the main radio to save the UE power consumption such as in sensing and decoding DL control (PDCCH) monitoring and performing radio resource management (RRM) measurement. LP-WUR 604 may include dedicated and separate radio hardware (e.g., a separate wireless receiver from main radio 606) to sense LP-WUS 610. As such, the UE may use LP-WUR 604 to sense LP-WUS 610 while in LP-WUR mode. Main radio 606 may be disabled in this mode.

[0100] The main radio 606 is the radio that a UE generally uses for uplink and downlink with the network, when the UE is not operating under LP-WUR mode. Compared to the main radio 606, LP-WUR 604 achieves monitoring of LP-WUS 610 with substantially less power consumption, thus conserving energy for the UE 602.

[0101] For LP-WUR 604 to achieve a significantly reduced power consumption compared to the main radio 606, certain performance trade-offs may be implemented. One such trade-off may be reduced receiver sensitivity, for example, a higher noise figure. Receiver sensitivity may be referred to as the minimum power of the receiving signal where the receiver can still reliably detect the signal. For example, for RF envelope detection, the noise figure for RF envelope detection of a LP-WUS may be relatively high (or higher than detection of non LP-WUS).

[0102] Aspects described in the present disclosure cover a mechanism to adapt the LP- WUR 604 operation for different coverage conditions which may enhance UE reporting related to LP-WUR, LP-WUS link quality measurement, or LP-WUS configuration management, and define restrictions or guidelines relating to LP-WUS.

[0103] Under LP-WUR mode, UE 602 may operate a low-power wake up receiver (LP- WUR) 604 which uses considerably less power than main radio 606, as described in detail in other sections. Main radio 606 may be deactivated so that it does not consume the UE's power when in the low-power mode. Similarly, network 608 may improve efficiency by transmitting LP-WUS 610 with different settings (e.g., time duration, period, transmissionpower, spatial beam settings or beam index, etc.) based on the location or state of the UE 602, as described in other sections.

[0104] FIG. 7 illustrates an example of UE report enhancement with respect to LP- WUS, according to an aspect.

[0105] A UE 702 may move throughout a cell coverage area 706 that is covered by a gNB 704. GNB 704 may represent a serving cell of UE 702. As UE 702 moves (e.g., from position A to position B to position C), network conditions of the UE 702 such as the ability for the UE 702 to sense a transmitted signal from gNB 704 may vary. When the UE 702 moves to the edge of cell coverage area 706, the UE's REFSENS loss may impact performance and sensing of LP-WUS 762. When the UE 702 moves closer to gNB 704, the REFSENS loss will have less of an impact on performance and sensing of LP-WUS 762. REFSENS may refer to the UE's reference sensitivity under different bandwidths in each frequency band. REFSENS may be calculated as (dBm)=-174+10*lg(Rx BW)+10*lg(SU)+NF-diversity gain + SNR + IM, where Rx BW is the receiving bandwidth of the UE; Spectrum Utilization (SU) is the full RB spectrum efficiency; NF (Noise Figure) is related to the receiver noise figure for a given frequency band; Diversity gain is the diversity reception gain of the UE with two antennas; SNR is the baseband demodulation threshold; and Implementation Margin (IM) is the UE implementation margin.

[0106] The UE may monitor one or more network conditions to determine whether or not to send a report 708 to the network (e.g., gNB 704). The report 708 may include various information from the UE to the network to request or adjust a setting of the LP-WUS 762. The UE can trigger sending of report 708 via uplink (UL) transmission to gNB 704 to inform the gNB of a recommended or selected configuration of LP-WUS 762. The UE 702 may request that the gNB 704 send the LP-WUS 762 based on the monitored network condition.

[0107] For example, if the signal strength is weaker at position C than position A, the UE may use the sensed signal strength or a proxy for the signal strength to trigger sending of report 708. The report 708 may include a request that the gNB 704 send LP-WUS 762 with increased strength, increased duration, and / or with a specified beam (that is more directed at the current location of UE 702), so that UE 702 may better sense the LP-WUS 762 at position C. The UE 702 may send the report 708 over its main radio. The UE may send the recommended or requested LP-WUS configuration in report 708, and thisconfiguration may be directly or indirectly related to time domain duration of the LP- WUS, recommended minimum time domain gap between adjacent gaps between frequency hops, recommended transmission power and its adjustment of LP-WUS, beam setting, etc. The network (e.g., gNB 704) may respond accordingly and transmit LP-WUS 762 per the received configuration in report 708.

[0108] In an example, the UE can only trigger the report when one or more conditions are satisfied. The one or more conditions may include a signal quality measurement of a monitored signal. In an example, the UE may monitor one or more signals such as, for example, system synchronization signal block (SSB) or channel state information reference signal (CS-RS) to determine whether or not to trigger the report 708. For example, the signal quality measurement may include one or more of reference signal received power (RSRP), reference signal received quality (RSRQ), and / or signal to interference and noise ratio (SINR) of the monitored signal. In an example, if the signal quality measurement (e.g., RSRP, RSRQ, and / or SINR) is below a threshold, this may trigger the UE to send report 708 with an updated configuration to increase the strength or the duration of the signal, or change a spatial parameter (e.g., a beam index). Additionally, or alternatively, if a change of the signal quality satisfies a threshold (e.g., the signal quality measurement improves), then the UE may send report 708 to reduce the strength or the duration of the LP-WUS 762, or change the spatial parameter accordingly.

[0109] FIG. 8 shows a method performed by a UE to send a report associated with LP- WUS, according to an aspect. The method 800 may be performed by processing logic of a UE, which may be coupled to a transceiver, where the processor may execute instructions stored on computer-readable memory to perform the method described. The performed by user equipment (UE) in communication with a network.

[0110] The method may be performed by processing logic that may comprise hardware (e.g., circuitry, dedicated logic, programmable logic, a processor, a processing device, a central processing unit (CPU), a system-on-chip (SoC), a transmitter, a receiver, etc.), software (e.g., instructions running / executing on a processing device), firmware (e.g., microcode), or a combination thereof.[OHl] Some of the operations described with respect to method 800 may correspond to operations described in other sections such as, for example, with respect to FIG. 6 and FIG. 7. The method 800 may be performed while the UE is in LP-WUR mode, or while the UE is in normal operation mode (non-LP-WUR mode).

[0112] The method illustrates example functions used by various embodiments. Although specific function blocks ("blocks") are disclosed in the method, such blocks are examples. That is, embodiments are well suited to performing various other blocks or variations of the blocks recited in the method. It is appreciated that the blocks in the method may be performed in an order different than presented.

[0113] At block 802, the UE may determine if a condition associated with the communication with the network is satisfied. The condition may include a reference signal measurement. The condition may be satisfied in response to a reference signal measurement being below a threshold, or in response to a change in the reference signal measurement satisfying a second threshold. For example, the UE condition may include whether or not a measured signal quality (e.g., RSRP, RSRQ, SINR, and / or other signal quality measurement) satisfies a threshold. Additionally, or alternatively, the condition may be satisfied if a change of the measured signal quality satisfies a change threshold (e.g., changing ‘x’ amount in ‘y’ time). The measured reference signal may include synchronization signal block (SSB), channel state information reference signal (CSI-RS), or a different reference signal.

[0114] At block 804, in response to the condition being satisfied, the UE may send a report to the network, the report including a configuration of a low power wake up signal (LP-WUS) for the network to transmit the LP-WUS in accordance with. In an example, the configuration includes one or more of a time duration of the LP-WUS, a minimum time gap between frequency hops of the LP-WUS, or a transmission power of the LP- WUS. In an example, the UE may send the report to the network using a main radio of the UE.

[0115] At block 806, in response to the condition not being satisfied, the UE may suspend sending of the report to the network until the condition is satisfied. How the UE sends the report may vary depending on the RRC state of the UE, as described in other sections such as with respect to FIG. 9. In an RRC connected state, the UE may send the report in media access control (MAC) control element (CE) using an existing active uplink (UL) grant. In response to the UE not having the existing active UL grant, the UE may send a scheduling request (SR) to the network to obtain an active UL grant and sends the report to the network over MAC CE over the obtained active UL grant.

[0116] The SR that is used to obtain the UL grant may be a dedicated scheduling request (e.g., a new type of SR request) for LP-WUS operation. This dedicated SR may beconfigured per cell group, per UE, or both. In an example, the dedicated SR may have a priority that is lower than a link recovery request SR, and that is equal than or higher than a data scheduling request SR. The network may give each UL grant to a respective UE based on priority, for example, a UE sending a higher priority SR may be given UL grant ahead of a UE sending a lower priority SR.

[0117] In an example, in response to the condition being satisfied, sending the report to the network at block 804 includes, when the UE is in radio resource control (RRC) idle state, sending a request to the network over physical random access channel (PRACH) to move the UE to RRC connected mode. From the RRC connected mode, the UE may obtain a UL grant, and then send the report to the network in RRC connected mode.

[0118] The report may be sent to the network over a physical random access channel (PRACH). A random access channel (RACH) resource of the PRACH may be partitioned into a plurality of groups, each group being associated with a different LP-WUS configuration, wherein each LP-WUS configuration has a unique time duration of the LP- WUS. For example, a first configuration may specify that the network is to transmit the LP-WUS for a duration of ‘x’ per cycle. In another example, the RACH resource of the PRACH is partitioned with one or more of a time domain resource allocation, a frequency domain resource allocation, a prach-Configurationlndex, and / or a PRACH preamble index.

[0119] In an example, the UE uses a contention free random access or contention based random access. In another example, the UE uses 4-step RACH (either a contention-based or a non-contention-based procedure). In another example, the UE uses 2-step RACH (either a contention-based or a non-contention-based procedure) to send the report to the network.

[0120] FIG. 9 shows an example of a workflow performed by a UE to send a report to a network with respect to LP-WUS, in accordance with an aspect. Some of the operations described with respect to FIG. 9 may correspond to operations described with respect to method 800, or other operations described in other sections. For example, aspects described with respect to FIG. 9 may correspond to obtaining an UL grant or using an existing UL grant, as described with respect to FIG. 8.

[0121] At block 902, the UE is in RRC connected state. In RRC connected state, the UE has access to uplink channels, once scheduled. The UE proceeds to block 904.

[0122] At block 904, while in the RRC connected state, the UE can determine whether or not one or more triggering conditions are satisfied, as described in other sections. When the triggering condition is satisfied, the UE can proceed to block 906.

[0123] At block 906, the UE can wake up the main radio and prepare for transmission of the report to inform the gNB the recommended configuration for the gNB to transmit the LP-WUS. The report from the UE to the network can be carried by MAC-CE (e.g., with the main radio of the UE).

[0124] The UE can proceed to block 908 and determine if the UE has an UL grant (e.g., an existing UL grant). If yes, the UE may continue to block 910.

[0125] At block 910, the UE may transmit the report including the selected or preferred LP-WUS configuration to the network. The report may be transmitted in media access channel control element (MAC-CE) using the UL grant.

[0126] If, at block 908, the UE does not have an UL grant, the UE may proceed to block 912 to obtain an UL grant. At block 912, the UE may send SR to the network to request an UL grant. The SR may be sent via physical uplink control channel (PUCCH). In an example, the UE uses existing configured SR to request the UL grant. Alternatively, the UE may use a new dedicated SR configuration to request the UL grant. This new dedicated SR can be configured either per CG (cell groups) or per UE, or both.

[0127] The UE may send the new dedicated SR with a given priority. Priority of the new SR, e.g., during UCI multiplexing, may vary. For example, priority of the dedicated SR may be the same as that of LRR (link recovery request) SR. Alternatively, priority of the new dedicated SR may be lower than the priority of LRR SR. Additionally, priority of new dedicated SR may be higher than the priority of a regular SR (a data scheduling request). In such an example, priority of the new dedicated SR may be higher than, the same as, or lower than that of the regular SR. In another example, priority of the new SR is higher than the priority of the LRR SR and the regular SR.

[0128] As described, operation may be different than what is shown in FIG. 9 in a nonconnected RRC state. When the UE is in RRC idle state, and the UE decides to trigger UL report after the triggering condition is met, the UE can send a PRACH to request NW to move UE into RRC connected mode so that the UE may obtain the UL grant (e.g., through a SR).

[0129] In another aspect, in both RRC connected and RRC idle states, when the UE sends the report via UL transmission to inform the gNB the recommended configurationof LP-WUS, the report can be carried directly by PRACH. The RACH resource can be partitioned into multiple groups. Each group of RACH resource can be mapped to different LP-WUS configuration, for example, different recommended time domain duration of LP- WUS. As discussed, the RACH resource can be partitioned with one or multiple of the following properties: a time domain resource allocation, a frequency domain resource allocation, a prach-Configurationlndex (see 38.211 clause 6.3.3.2), PRACH preamble index, or other properties. The UE may use either CFRA (contention free random access) or CBRA (contention based random access) or both to send the report. Similarly, the UE may use 4 step RACH or 2 step RACH or both, to send the report.

[0130] FIG. 10 shows a method performed by a UE with respect to LW-WUR and a potential link failure, according to an aspect. The method 1000 may be performed by processing logic of a UE, which may be coupled to a transceiver (e.g., a main receiver) and / or a low-power wake up receiver, where the processor may execute instructions stored on computer-readable memory to perform the method described. The performed by a UE in communication with a network. The UE may correspond to a UE as described in other sections, such as, for example, UE 602 or UE 702.

[0131] The method may be performed by processing logic that may comprise hardware (e.g., circuitry, dedicated logic, programmable logic, a processor, a processing device, a central processing unit (CPU), a system-on-chip (SoC), etc.), software (e.g., instructions running / executing on a processing device), firmware (e.g., microcode), or a combination thereof.

[0132] Some of the operations described with respect to method 1000 may correspond to operations described in other sections such as, for example, with respect to FIG. 6, FIG. 7, or FIG. 8.

[0133] The method illustrates example functions used by various embodiments. Although specific function blocks ("blocks") are disclosed in the method, such blocks are examples. That is, embodiments are well suited to performing various other blocks or variations of the blocks recited in the method. It is appreciated that the blocks in the method may be performed in an order different than presented.

[0134] At block 1002, a UE monitors a quality or reliability associated with low power wake up signal (LP-WUS). A UE can be configured to monitor for a link failure or a potential link failure on LP-WUR / LP-WUS. A link failure may refer to an inability for the UE to reliably detect the LP-WUS with the LP-WUR. Because it is difficult to knowwhether a signal is not being transmitted as opposed to not being detected, the link failure may be regarded as a hypothetical or potential link failure, and the quality or reliability measurement of the LP-WUS may be regarded as a hypothetical quality or reliability measurement, or as a proxy (a stand-in) for the quality or reliability of the LP-WUS. When this hypothetical or proxy for the quality or reliability of the LP-WUS exceeds a threshold, the UE may trigger a link failure of the LP-WUS and LP-WUR operation.

[0135] At block 1004, the UE determines if a condition associated with the quality or reliability of the LP-WUS is satisfied. The quality or reliability of the LP-WUS can be determined based on a measured reference signal. For example, the UE may measure a one or more signal quality measurements of a reference signal (e.g., RSRQ, RSRP, SINR, etc.) and then use a lookup table or an algorithm to determine a corresponding miss-detection probability of the LP-WUS, based on the measured signal quality of the reference signal. The UE may measure one or more of the LP-WUS part 1, the LP-WUS part 2, the SSB, the CSLRS, or another reference signal.

[0136] The UE may use one or more metrics as an indicator that represents the quality or reliability of LP-WUS. For example, the UE may determine a miss-detection probability. The miss-detection probability may be understood as a probability that the UE cannot detect the presence of LP-WUS. This miss-detection probability may be determined based on one or more factors as described below. It may be used by UE or network as an indicator for quality or reliability of the LP-WUS and LP-WUR receive chain. The UE may set a miss-detection probability threshold (e.g., ‘x’) where the UE may deem that a link failure is present if the calculated miss-detection is greater than 'x'. The threshold may be a percentage (e.g., 10% or greater) or other value.

[0137] In an example, the UE may implement a counter to reduce the false alarm of the link failure detection. For each instance in time that the UE monitors and determines the hypothetical quality of LP-WUS, if it exceeds the threshold, the UE may increase a counter by 1, and if the LP-WUS is within the threshold, the counter is reset (e.g., to zero). When the counters reaches a configurable or fixed value, UE determines that a link failure of the LP-WUS has occurred.

[0138] At block 1006, in response to the condition being satisfied, the UE performs one or more operations that is associated with a link failure of the LP-WUS. When the UE detects the link failure on LP-WUR / LP-WUS, one or multiple of the following operations can be implemented by the UE. In an aspect, at block 1006, performing the one or moreoperations includes sending a link failure report of the LP-WUS, to the network. In such a case, the link failure on LP-WUR / LP-WUS can be used by the UE to trigger transmission of link failure report (which may also be referred to as a recovery request) to the network. The link failure report may include conditions associated with the link failure such as, for example, the sensed quality or reliability of the LP-WUS, the miss-detection probability, a configuration of the LP-WUS, and / or a request for remedial operation from the network (e.g., to increase duration or strength of the LP-WUS and / or change a spatial parameter of the LP-WUS).

[0139] Additionally, or alternatively, at block 1006, the UE may use a main radio to monitor a physical downlink control channel (PDCCH), perform radio resource management (RRM) and disable a low power wake-up radio (LP-WUR) until the link failure is recovered. In such a manner, upon detection of link failure on LP-WUR / LP- WUS, the UE can start to use the main radio to monitor the PDCCH and perform RRM, and disable the LP-WUR until link failure is recovered.

[0140] Additionally, or alternatively, at block 1006, the UE may use the link failure as input to a radio link monitoring (RLM) operation. Generally, the UE monitor the downlink radio link quality based on the reference signal configured as RLM-RS resource(s) in order to detect the downlink radio link quality of the PCell or PSCell, or in some cases, if there are no RLM-RS resource(s) configured, then the UE may monitor the current SSB for the downlink radio link quality. By using the link failure as input to RLM, detection of LP- WUR / LP-WUS link failure may be used as a mechanism to trigger a more general radio link failure (RLF).

[0141] If the UE is in the RRC CONNECT State, the link failure report can be sent over MAC-CE or through PRACH signaling, as described in other sections. If the UE is in RRC IDLE State, the link failure report sent through PRACH signaling, as described in other sections.

[0142] FIG. 11 illustrates an example of a UE and network with respect to LP-WUS configuration enhancement, in accordance with an aspect. Aspects described with respect to FIG. 11 may correspond or extend to aspects described in other sections or with respect to other figures.

[0143] One or more UEs such as UE 1104, 1112, and 1108 can be in communication with network 1102. Depending on a position of each UE in cell coverage area 1120, therespective UE may need a stronger LP-WUS, or a longer duration, or for the LP-WUS to be transmitted with particular spatial properties (e.g., over a particular beam).

[0144] To allow adaption of LP-WUS to different UE coverage condition, the network 1102 can configure multiple LP-WUS configurations targeting for different coverage scenarios. Depending on where the UE is located, the ability for the UE to sense a LP- WUS may change. Thus, the network 1102 may transmit the LP-WUS according to a particular configuration to account for where the UE is located relative to the gNB, or other factors. The network 1102 may provide the configurations 1106 to each UE so that the UE knows when to listen for the LP-WUS, or on what reference signal, or on what beam the LP-WUS will be carried on.

[0145] For example, LP-WUS configuration C may correspond to a best coverage scenario, in which case the configuration may include a higher transmission power, a longer transmission duration, and / or a spatial property to stretch the coverage distance of the LP-WUS 1110; the LP-WUS configuration B may correspond to a medium coverage scenario, in which case the configuration where the transmission power or duration is reduced and / or the spatial property is adjusted to reduce coverage of the LP-WUS 1110, and a LP-WUS configuration A may correspond to a worst coverage scenario where the UE may be very close to the gNB so the network 1102 may send LP-WUS 1110 with a minimum transmission power, a minimum transmission power, and / or a spatial beam corresponding with the least amount of coverage of the LP-WUS.

[0146] For example, UE 1108 may sense LP-WUS 1110 the best due to its location or proximity relative to gNB. UE 1108 may best be served with configuration A to preserve energy and network resources of network 1102. UE 1104 may sense LP-WUS 1110 with added noise or reduced strength relative to UE 1108. UE 1104 may best be served with configuration B. UE 1102 may be at the cell edge of coverage area 1120 and may need a stronger LP-WUS signal or an increased duration, or a particular beam setting, or a combination thereof to reliably detect LP-WUS 1110. As such, each UE may send a respective report 1114 to include its respective signal quality measurements and / or a request for a given configuration.

[0147] In some aspects, network 1102 may perform a method. The network 1102 may send, to the UE (or to each of a plurality of UEs), a plurality of configurations associated with a low power wake up signal (LP-WUS) (for example, LP-WUS configuration A, configuration B, and configuration C). Each of the plurality of configurations maycorrespond to a respective coverage of the LP-WUS. Each of the plurality of configurations may include at least one of: a time duration of the LP-WUS, a transmission power of the LP-WUS, or spatial beam parameters of the LP-WUS.

[0148] The configuration 1106 can be carried on different signals. In an option, configuration 1106 may be carried on System Information (SI) that is common among all UEs (e.g., a broadcast). In a second option, configuration 1106 may be carried as dedicated RRC configuration for each UE. Different LP-WUS configurations can include different information about the LP-WUS that is specific to that configuration. This configuration information (e.g., timing, spatial information, channel information) may help the UE operate as LP-WUR and detect the LP-WUS that is broadcasted according to the respective configuration. The configuration 1106 may each include one or multiple of the following metrics: time domain duration the LP-WUS, transmission power of the LP-WUS, and / or spatial beam information of the LP-WUS including one or multiple spatial beams.

[0149] To allow adaption of LP-WUS to different UE coverage condition, when the network 1102 configures multiple LP-WUS configuration (each targeting different coverage scenarios), the UE behavior may vary. In one option, the UE (e.g., UE 1104) can report to the network 1102 the preferred LP-WUS configuration (selected from one of configurations 1106) over report 1114. The triggering conditions in which the UE sends this report, and the contents of the report, may correspond to those described in other sections. In a second option, the UE 1104 may select a proper LP-WUS configuration for LP-WUS detection autonomously. This selection may be performed based on one or more conditions detected by the UE such as signal strength of a reference signal, or other condition. In this option, the network 1102 may send all available LP-WUS configurations to each of the UE in a given cell coverage area 1120 for them to select. The network may then transmit the selected LP-WUS configuration.

[0150] In an aspect, to provide a UE capability report 1114, the UE can include in report 1114 whether the UE supports LP-WUS for one or more RRC states. For example, the UE can include in report 1114, whether each of RRC idle state, RRC connected state, and / or RRC inactive state support LP-WUS.

[0151] In an aspect, the UE can report whether the UE prefers LP-WUS operation more dynamically, in addition to UE capability report 1114. The UE may send a dynamic LP- WUS request as part of the report 1114, or separately in one or multiple of the following options: the dynamic LP-WUS report can be carried by RRC message, for example, UEassistance information; or the dynamic LP-WUS report can be carried by MAC-CE, for example, as described in other sections, or the dynamic LP-WUS report can be carried by layer 1 (Physical Layer), for example, PRACH, UCI on PUCCH or PUSCH. In response to receiving this request for dynamic LP-WUS, the network may perform dynamic resource sharing between LP-WUS and legacy signal s / channels, such as dynamically sharing downlink resources between physical downlink shared channel (PDSCH) and LP- WUS and adjusting network resources allocated to LP-WUS depending on the network resources allocated to PDSCH. Network resources may include time domain and frequency domain multiplexing of network bandwidth.

[0152] FIG. 12 shows a method performed by a UE in connection to operation as a LP- WUR, according to an aspect. The method 1200 may be performed by processing logic of a UE, which may be coupled to a transceiver, where the processor may execute instructions stored on computer-readable memory to perform the method described. The performed by user equipment (UE) in communication with a network.

[0153] The method may be performed by processing logic that may comprise hardware (e.g., circuitry, dedicated logic, programmable logic, a processor, a processing device, a central processing unit (CPU), a system-on-chip (SoC), etc.), software (e.g., instructions running / executing on a processing device), firmware (e.g., microcode), or a combination thereof.

[0154] Some of the operations described with respect to method 800 may correspond to operations described in other sections such as, for example, with respect to FIG. 6 and FIG. 7.

[0155] The method illustrates example functions used by various embodiments. Although specific function blocks ("blocks") are disclosed in the method, such blocks are examples. That is, embodiments are well suited to performing various other blocks or variations of the blocks recited in the method. It is appreciated that the blocks in the method may be performed in an order different than presented.

[0156] At block 1202, a UE operate as a low power wake-up receiver (LP-WUR) to monitor for presence of a low power wake-up signal (LP-WUS). In this case, processing logic of the LP-WUR (e.g., a dedicated receiver and a receiver chain) may detect whether or not the LP-WUS is being transmitted over a specified network resource (e.g., as defined by a respective LP-WUS configuration). For example, the network may configure transmission of LP-WUS that describes when it will be transmitted, and which resource orresources it will use (e.g., frequency band, spatial parameters, etc.). Once NW configures the LP-WUS, it can provide the configuration to the UE and, in response, the UE can turn on LP-WUR to detect the LP-WUS.

[0157] At block 1204, in response to operating as the LP-WUR, the UE may deactivate a main radio of the UE including: suspending downlink (DL) reception in each component carrier (CC), and / or suspending uplink transmission in each component carrier. When UE operates LP-WUR, such as when UE is configured to monitor LP-WUS, the UE is not expected to operate the main radio. For example, the UE may not perform regular DL reception in any CC. This may include suspending reception in one or more of PDCCH monitoring, PDSCH reception, CSLRS measurement, remote interference management (RIM) reference signal (RS), positioning reference signal (PRS) reception. In an example, the UE may suspend reception of SSB measurement, except for instances as mentioned in other sections, such as to trigger sending of a report associated with LP-WUS.

[0158] Similarly, when UE operates as LP-WUR, the UE may suspend UL transmission in any CC. For example, the UE may suspend UL transmission in one or more of PUSCH, PUCCH, and / or SRS. UL transmission that is suspended may refer to regular UL transmission such as that UL that is scheduled under existing course of communications from the UE to the network over said channels.

[0159] In an example, at block 1204, while operating as LP-WUR, in response to operating in unlicensed spectrum, the UE suspends performance of listen before talk (LBT). For example, when the UE operates as LP-WUR in unlicensed spectrum, the UE and network may treat LP-WUS as small control signaling, not subject to listen before talk (sensing). In such a case, the UE may operate in accordance with LBT Category 1. In this case, the transmitting entity (the UE or the network) refrains from performing an LBT procedure. Listen before talk, which may also be referred to as listen before transmit, includes sensing (listening) to the radio environment before starting a transmission.

[0160] In an example, at block 1204, while operating as LP-WUR, in response to operating in unlicensed spectrum, the UE treats the LP-WUS as high priority and reduces a sensing requirement of the LP-WUS. For example, when the UE operates as LP-WUR in unlicensed spectrum, the UE may treat the LP-WUS as high priority subject to the sensing with reduced requirement. In such a case, the UE may operate in accordance with LBT Category 2 - the UE or network may perform LBT without random backoff. The duration of time that the channel is sensed to be idle before transmitting is deterministic.

[0161] At block 1206, in response to detecting presence of the LP-WUS, the UE may activate the main radio. Similarly, in response to detecting an absence of the LP-WUS, the UE may maintain operation as the LP-WUR. As such, the suspended operations of the main radio may continue to be suspended until the UE detects the LP-WUS. The suspended operations of the main radio may be resumed in response to the UE detecting the LP-WUS and performing a ‘wake-up’ in response to detecting the LP-WUS. The UE may repeat method 1200 periodically to detect a presence of the transmission of the LP-WUS and to react accordingly. Thus, at block 1204 and block 1206, the UE may maintain operation as LP-WUR if the LP-WUS is detected as absent, and the UE may maintain suspension of DL reception and UL transmission with the main radio. Detecting the LP-WUS may include detecting RF energy at a given frequency, time, etc., as defined by a respective LP-WUS configuration.

[0162] It should be understood that methods described may overlap in terms of operation by network or UE. For example, a UE may perform method 1200 in addition to method 1000 or method 800, and so on.

[0163] There are a number of example embodiments described herein.

[0164] Example 1 is a method performed by a UE in communication with a network, including: determining if a condition associated with the communication with the network is satisfied; in response to the condition being satisfied, sending a report to the network, the report including a configuration of a low power wake up signal (LP-WUS) for the network to transmit the LP-WUS in accordance with; and in response to the condition not being satisfied, suspending sending of the report to the network until the condition is satisfied.

[0165] Example 2 is the method of Example 1 that may optionally include that the condition is satisfied in response to a reference signal measurement being below a threshold, or in response to a change in the reference signal measurement satisfying a second threshold.

[0166] Example 3 is the method of Example 1 that may optionally include that the LP- WUS configuration includes one or more of a time duration of the LP-WUS, a minimum time gap between frequency hops of the LP-WUS, or a transmission power of the LP- WUS.

[0167] Example 4 is the method of Example 1 that may optionally include that the report is sent to the network using a main radio of the UE.

[0168] Example 5 is the method of Example 1 that may optionally include that in an RRC connected state, the UE sends the report in media access control (MAC) control element (CE) using an existing active uplink (UL) grant.

[0169] Example 6 is the method of Example 1 that may optionally include that in response to the UE not having the existing active UL grant, the UE sends a scheduling request (SR) to the network to obtain an active UL grant and sends the report to the network over MAC CE over the obtained active UL grant.

[0170] Example 7 is the method of Example 6 that may optionally include that the SR is a dedicated scheduling request for LP-WUS operation, configured per cell group or per UE.

[0171] Example 8 is the method of Example 7 that may optionally include that the dedicated SR has a priority that is lower than a link recovery request SR, and that is equal than or higher than a data scheduling request SR.

[0172] Example 9 is the method of Example 1 that may optionally include that in response to the condition being satisfied, sending the report to the network includes, when the UE is in radio resource control (RRC) idle state, sending a request to the network over physical random access channel (PRACH) to move the UE into RRC connected mode and obtaining a UL grant in the RRC connected mode for sending the report.

[0173] Example 10 is the method of Example 1 that may optionally include that the report is sent to the network over a physical random access channel (PRACH).

[0174] Example 11 is the method of Example 10 that may optionally include that a random access channel (RACH) resource of the PRACH is partitioned into a plurality of groups, each group being associated with a different LP-WUS configuration, wherein each LP-WUS configuration has a unique time duration of the LP-WUS.

[0175] Example 12 is the method of Example 11 that may optionally include that a random access channel (RACH) resource of the PRACH is partitioned with one or more of: a time domain resource allocation, a frequency domain resource allocation, a prach- Configurationlndex, or a PRACH preamble index.

[0176] Example 13 is the method of Example 10 that may optionally include that the UE uses a contention free random access or contention based random access, or 4-step RACH, or 2-step RACH to send the report to the network.

[0177] Example 14 is a method, performed by a UE in communication with a network, including: monitoring a quality or reliability associated with low power wake up signal (LP-WUS); determining if a condition associated with the quality or reliability of the LP- WUS is satisfied; and in response to the condition being satisfied, performing one or more operations including a) sending a link failure report to the network, b) using a main radio to monitor a physical downlink control channel (PDCCH), performing radio resource management (RRM) and disabling a low power wake-up radio (LP-WUR) until the link failure is recovered, or c) using the link failure as input to a radio link monitoring.

[0178] Example 15 is the method of Example 14 that may optionally include that the quality or the reliability includes a probability of a missed detection of the LP-WUS, and monitoring the quality or the reliability includes incrementing a counter each time the probability of the missed detection exceeds a threshold and resetting the counter in response to the probability of the missed detection not exceeding the threshold.

[0179] Example 16 is the method of Example 14 that may optionally include that monitoring the quality or reliability associated with the LP-WUS includes monitoring a signal including one or more of: a synchronization signal block (SSB), channel state information reference signal (CSLRS), LP-WUS part 1, or LP-WUS part 2.

[0180] Example 17 is the method of Example 14 that may optionally include that sending the link failure report to the network is performed over media access control (MAC) control element (CE) when the UE is in idle state, or over physical random access channel (PRACH).

[0181] Example 18 is the method of Example 14 that may optionally include that sending the link failure report to the network is performed over physical random access channel (PRACH) when the UE is in radio resource control (RRC) idle state.

[0182] Example 19 is a method performed by a network in communication with a UE, including: sending, to the UE, a plurality of configurations associated with a low power wake up signal (LP-WUS), wherein each of the plurality of configurations corresponding to a respective coverage, and wherein each of the plurality of configurations including at least one of: a time duration of the LP-WUS, a transmission power of the LP-WUS, or spatial beam parameters of the LP-WUS.

[0183] Example 20 is the method of Example 19 that may optionally include receiving, by the network, a report from the UE that includes a request to transmit the LP-WUS in accordance with a selected one of the plurality of configurations.

[0184] Example 21 is the method of Example 20 that may optionally include in response to receiving the report, transmitting the LP-WUS in accordance with the one of the plurality of LP-WUS configurations.

[0185] Example 22 is the method of Example 20 that may optionally include that receiving, from the UE, a report that includes an indicator of whether the UE supports LP- WUS for each radio resource control (RRC) state of the UE.

[0186] Example 23 is the method of Example 20 that may optionally include receiving, from the UE, a report that includes a request from the UE to perform dynamic LP-WUS operation, wherein the report is received through one of: a radio resource control (RRC) message, MAC-CE signaling, or through layer 1 (LI) signaling.

[0187] Example 24 is the method of Example 19 that may optionally include that sending the plurality of configurations to the UE comprises broadcasting the plurality of configurations to a plurality of UEs over system information (SI).

[0188] Example 25 is the method of Example 19 that may optionally include that sending the plurality of configurations to the UE is performed through radio resource control (RRC) configuration.

[0189] Example 26 is a method, performed by a UE, including operating as a low power wake-up receiver (LP-WUR) to monitor for presence of a low power wake-up signal (LP- WUS); while operating as the LP-WUR, deactivating a main radio of the UE including suspending downlink reception in each component carrier, and suspending uplink transmission in each component carrier; and in response to detecting presence of the LP- WUS, activating the main radio.

[0190] Example 27 is the method of Example 26 that may optionally include that in response to operating in unlicensed spectrum, the UE treats the LP-WUS as a small control signal and operates as the LW-WUR under listen before talk (LBT) category 1.

[0191] Example 28 is the method of Example 26 that may optionally include that in response to operating in unlicensed spectrum, the UE operates as the LP-WUS under LBT category 2 and treats the LP-WUS as high priority and reduces a sensing requirement.

[0192] Example 29 is the method of Example 26 that may optionally include in response to detecting the presence of the LP-WUS, activating the main radio of the UE including resuming the downlink reception or resuming the uplink transmission.

[0193] Example 30 is an apparatus, comprising a processor coupled to non-transitory computer memory storing instructions that, when executed by the processor, cause the processor to perform the method of any one of examples 1-29.

[0194] Example 31 non-transitory computer readable memory storing instructions that, when executed by a processor, causes performance of the method of any one of examples 1-29.

[0195] Example 32 is a UE comprising one or more processors configured to perform the method of any one of examples 1-18 and 26-29.

[0196] Example 33 is a baseband processor configured to perform the method of any one of examples 1-18 and 26-29.

[0197] Example 34 is a network comprising one or more processors configured to perform the method of any one of examples 19-25.

[0198] Example 35 is a baseband processor configured to perform the method of any one of examples 19-25.

[0199] Portions of what was described above may be implemented with logic circuitry such as a dedicated logic circuit or with a microcontroller or other form of processing core that executes program code instructions. Thus, processes taught by the discussion above may be performed with program code such as machine-executable instructions that cause a machine that executes these instructions to perform certain functions. In this context, a “machine” may be a machine that converts intermediate form (or “abstract”) instructions into processor specific instructions (e.g., an abstract execution environment such as a “virtual machine” (e.g., a Java Virtual Machine), an interpreter, a Common Language Runtime, a high-level language virtual machine, etc.), and / or, electronic circuitry disposed on a semiconductor chip (e.g., “logic circuitry” implemented with transistors) designed to execute instructions such as a general-purpose processor and / or a special-purpose processor. Processes taught by the discussion above may also be performed by (in the alternative to a machine or in combination with a machine) electronic circuitry designed to perform the processes (or a portion thereof) without the execution of program code.

[0200] The present invention also relates to an apparatus for performing the operations described herein. This apparatus may be specially constructed for the required purpose, or it may comprise a general -purpose computer selectively activated or reconfigured by a computer program stored in the computer. Such a computer program may be stored in a computer readable storage medium, such as, but is not limited to, any type of diskincluding floppy disks, optical disks, CD-ROMs, and magnetic-optical disks, read-only memories (ROMs), RAMs, EPROMs, EEPROMs, magnetic or optical cards, or any type of media suitable for storing electronic instructions, and each coupled to a computer system bus.

[0201] A machine-readable medium includes any mechanism for storing or transmitting information in a form readable by a machine (e.g., a computer). For example, a machine-readable medium includes read only memory (“ROM”); random access memory (“RAM”); magnetic disk storage media; optical storage media; flash memory devices; etc.

[0202] In any of the examples described, a processor may include a baseband processor (also known as baseband radio processor, BP, or BBP) is a device (a chip or part of a chip) in a network interface that manages radio functions, such as communicating (e.g., TX and RX) over an antenna.

[0203] An article of manufacture may be used to store program code. An article of manufacture that stores program code may be embodied as, but is not limited to, one or more memories (e.g., one or more flash memories, random access memories (static, dynamic, or other)), optical disks, CD-ROMs, DVD ROMs, EPROMs, EEPROMs, magnetic or optical cards or other type of machine-readable media suitable for storing electronic instructions. Program code may also be downloaded from a remote computer (e.g., a server) to a requesting computer (e.g., a client) by way of data signals embodied in a propagation medium (e.g., via a communication link (e.g., a network connection)).

[0204] The preceding detailed descriptions are presented in terms of algorithms and symbolic representations of operations on data bits within a computer memory. These algorithmic descriptions and representations are the tools used by those skilled in the data processing arts to most effectively convey the substance of their work to others skilled in the art. An algorithm is here, and generally, conceived to be a self-consistent sequence of operations leading to a desired result. The operations are those requiring physical manipulations of physical quantities. Usually, though not necessarily, these quantities take the form of electrical or magnetic signals capable of being stored, transferred, combined, compared, and otherwise manipulated. It has proven convenient at times, principally for reasons of common usage, to refer to these signals as bits, values, elements, symbols, characters, terms, numbers, or the like.

[0205] It should be kept in mind, however, that all of these and similar terms are to be associated with the appropriate physical quantities and are merely convenient labelsapplied to these quantities. Unless specifically stated otherwise as apparent from the above discussion, it is appreciated that throughout the description, discussions utilizing terms such as “transmitting”, “sending”, “selecting,” “determining,” “receiving,” “forming,” “grouping,” “aggregating,” “generating,” “removing,” or the like, refer to the action and processes of a computer system, or similar electronic computing device, that manipulates and transforms data represented as physical (electronic) quantities within the computer system's registers and memories into other data similarly represented as physical quantities within the computer system memories or registers or other such information storage, transmission or display devices.

[0206] The processes and displays presented herein are not inherently related to any particular computer or other apparatus. Various general-purpose systems may be used with programs in accordance with the teachings herein, or it may prove convenient to construct a more specialized apparatus to perform the operations described. The required structure for a variety of these systems will be evident from the description below. In addition, the present invention is not described with reference to any particular programming language. It will be appreciated that a variety of programming languages may be used to implement the teachings of the invention as described herein.

[0207] It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.

[0208] The foregoing discussion merely describes some exemplary aspects of the present invention. One skilled in the art will readily recognize from such discussion, the accompanying drawings and the claims that various modifications can be made without departing from the spirit and scope of the invention.

Claims

CLAIMSWhat is claimed is:

1. A method performed by a UE in communication with a network, comprising: determining if a condition associated with the communication with the network is satisfied; in response to the condition being satisfied, sending a report to the network, the report including a configuration of a low power wake up signal (LP-WUS) for the network to transmit the LP-WUS in accordance with; and in response to the condition not being satisfied, suspending sending of the report to the network until the condition is satisfied.

2. The method of claim 1, wherein the condition is satisfied in response to a reference signal measurement being below a threshold, or in response to a change in the reference signal measurement satisfying a second threshold.

3. The method of claim 1, wherein the LP-WUS configuration includes one or more of: a time duration of the LP-WUS, a minimum time gap between frequency hops of the LP- WUS, or a transmission power of the LP-WUS.

4. The method of claim 1, wherein the report is sent to the network using a main radio of the UE.

5. The method of claim 1, wherein in an RRC connected state, the UE sends the report in media access control (MAC) control element (CE) using an existing active uplink (UL) grant.

6. The method of claim 5, wherein in response to the UE not having the existing active UL grant, the UE sends a scheduling request (SR) to the network to obtain an active UL grant and sends the report to the network over MAC CE over the obtained active UL grant.

7. The method of claim 6, wherein the SR is a dedicated scheduling request for LP-WUS operation, configured per cell group or per UE.

8. The method of claim 7, wherein the dedicated SR has a priority that is lower than a link recovery request SR, and that is equal than or higher than a data scheduling request SR.

9. The method of claim 1, wherein in response to the condition being satisfied, sending the report to the network includes, when the UE is in radio resource control (RRC) idle state, sending a request to the network over physical random access channel (PRACH) to move the UE into RRC connected mode and obtaining a UL grant in the RRC connected mode for sending the report.

10. The method of claim 1, wherein the report is sent to the network over a physical random access channel (PRACH).

11. The method of claim 10, wherein a random access channel (RACH) resource of the PRACH is partitioned into a plurality of groups, each group being associated with a different LP-WUS configuration, wherein each LP-WUS configuration has a unique time duration of the LP-WUS.

12. The method of claim 11, wherein a random access channel (RACH) resource of the PRACH is partitioned with one or more of a time domain resource allocation, a frequency domain resource allocation, a prach-Configurationlndex, or a PRACH preamble index.

13. The method of claim 10, wherein the UE uses a contention free random access or contention based random access, or 4-step RACH, or 2-step RACH to send the report to the network.

14. A method, performed by a UE in communication with a network, comprising: monitoring a quality or reliability associated with low power wake up signal (LP- WUS); determining if a condition associated with the quality or reliability of the LP-WUS is satisfied; and in response to the condition being satisfied, performing one or more operations including a) sending a link failure report to the network, b) using a main radio to monitor a physical downlink control channel (PDCCH), performing radio resource management (RRM) and disabling a low power wake-up radio (LP-WUR) until the link failure is recovered, or c) using the link failure as input to a radio link monitoring.

15. The method of claim 14, wherein the quality or the reliability includes a probability of a missed detection of the LP-WUS, and monitoring the quality or the reliability includes incrementing a counter each time the probability of the missed detection exceeds athreshold and resetting the counter in response to the probability of the missed detection not exceeding the threshold.

16. The method of claim 14, wherein monitoring the quality or reliability associated with the LP-WUS includes monitoring a signal including one or more of: a synchronization signal block (SSB), channel state information reference signal (CSI-RS), LP-WUS part 1, or LP-WUS part 2.

17. The method of claim 14, wherein sending the link failure report to the network is performed over media access control (MAC) control element (CE) when the UE is in idle state, or over physical random access channel (PRACH).

18. The method of claim 14, wherein sending the link failure report to the network is performed over physical random access channel (PRACH) when the UE is in radio resource control (RRC) idle state.

19. A method performed by a network in communication with a UE, comprising: sending, to the UE, a plurality of configurations associated with a low power wake up signal (LP-WUS), wherein each of the plurality of configurations corresponding to a respective coverage, and wherein each of the plurality of configurations including at least one of: a time duration of the LP-WUS, a transmission power of the LP-WUS, or spatial beam parameters of the LP-WUS.

20. The method of claim 19, further comprising: receiving, by the network, a report from the UE that includes a request to transmit the LP-WUS in accordance with a selected one of the plurality of configurations.

21. The method of claim 20, further comprising in response to receiving the report, transmitting the LP-WUS in accordance with the one of the plurality of LP-WUS configurations.

22. The method of claim 20, further comprising receiving, from the UE, a report that includes an indicator of whether the UE supports LP-WUS for each radio resource control (RRC) state of the UE.

23. The method of claim 20, further comprising receiving, from the UE, a report that includes a request from the UE to perform dynamic LP-WUS operation, wherein the report is received through one of: a radio resource control (RRC) message, MAC-CE signaling, or through layer 1 (LI) signaling.

24. The method of claim 19, wherein sending the plurality of configurations to the UE comprises broadcasting the plurality of configurations to a plurality of UEs over system information (SI).

25. The method of claim 19, wherein sending the plurality of configurations to the UE is performed through radio resource control (RRC) configuration.

26. A method, performed by a UE, including operating as a low power wake-up receiver (LP-WUR) to monitor for presence of a low power wake-up signal (LP-WUS); while operating as the LP-WUR, deactivating a main radio of the UE including suspending downlink reception in each component carrier, and suspending uplink transmission in each component carrier; and in response to detecting presence of the LP-WUS, activating the main radio.

27. The method of claim 26, wherein in response to operating in unlicensed spectrum, the UE treats the LP-WUS as a small control signal and operates as the LW-WUR under listen before talk (LBT) category 1.

28. The method of claim 26, wherein in response to operating in unlicensed spectrum, the UE operates as the LP-WUS under LBT category 2 and treats the LP-WUS as high priority and reduces a sensing requirement.

29. The method of claim 26, further comprising in response to detecting the presence of the LP-WUS, activating the main radio of the UE including resuming the downlink reception or resuming the uplink transmission.

30. An apparatus, comprising a processor coupled to non-transitory computer memory storing instructions that, when executed by the processor, cause the processor to perform the method of any one of claims 1-29.

31. A non-transitory computer readable memory storing instructions that, when executed by a processor, causes performance of the method of any one of claims 1-29.

32. A UE comprising one or more processors configured to perform the method of any one of claims 1-18 and 26-29.

33. A baseband processor configured to perform the method of any one of claims 1-18 and 26-29.

34. A network comprising one or more processors configured to perform the method of any one of claims 19-25.

35. A baseband processor configured to perform the method of any one of claims 19-

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