Lower power wake-up signal operation
By determining a specific measurement and reporting cycle for LP-WUS monitoring, the terminal device manages DRX cycles and PDCCH monitoring, addressing power consumption and data transmission delays, enhancing efficiency in communication systems.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-10-04
- Publication Date
- 2026-04-09
AI Technical Summary
Existing communication systems face challenges in managing power consumption during low power-wake up signal (LP-WUS) monitoring, particularly in maintaining DRX cycles and handling PDCCH monitoring without causing data transmission delays in RRC_CONNECTED mode.
A terminal device determines a specific measurement and reporting cycle for LP-WUS monitoring, performing measurements and reports based on this cycle, while managing DRX cycles and PDCCH monitoring to minimize power consumption and maintain efficient data transmission.
This approach allows for reduced power consumption and efficient data transmission by stabilizing DRX cycles and PDCCH monitoring during LP-WUS operations, ensuring timely reporting without switching between different cycles.
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Figure CN2024123259_09042026_PF_FP_ABST
Abstract
Description
LOWER POWER WAKE-UP SIGNAL OPERATIONFIELD
[0001] Exemplary embodiments of the present disclosure generally relate to the field of communications, and in particular, to apparatuses, methods and a computer-readable storage medium for lower power wake-up signal operation.BACKGROUND
[0002] A communication network can be seen as a facility that enables communications between two or more communication devices, or provides communication devices access to a data network. A mobile or wireless communication network is one example of a communication network.
[0003] Such communication networks operate in according with standards such as those provided by 3GPP (Third Generation Partnership Project) or ETSI (European Telecommunications Standards Institute) . Examples of standards are the so-called 5G (5th Generation) standards provided by 3GPP.SUMMARY
[0004] In general, exemplary embodiments of the present disclosure provide a solution for lower power wake-up signal operation.
[0005] In a first aspect, there is provided a terminal device. The terminal device comprises: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to: determine a measurement and reporting cycle to be used during low power-wake up signal (LP-WUS) monitoring; perform the LP-WUS monitoring; and perform at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.
[0006] In a second aspect, there is provided a network device. The network device comprises: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to: receive, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring.
[0007] In a third aspect, there is provided a method performed by a terminal device. The method comprises: determining a measurement and reporting cycle to be used during low power-wake up signal (LP-WUS) monitoring; performing the LP-WUS monitoring; and performing at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.
[0008] In a fourth aspect, there is provided a method performed by a network device. The method comprises receiving, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring.
[0009] In a fifth aspect, there is provided an apparatus. The apparatus comprises: means for determining a measurement and reporting cycle to be used during low power-wake up signal (LP-WUS) monitoring; means for performing the LP-WUS monitoring; and means for performing at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.
[0010] In a sixth aspect, there is provided an apparatus. The apparatus comprises means for receiving, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring.
[0011] In a seventh aspect, there is provided a non-transitory computer readable medium comprising program instructions for causing an apparatus to perform at least the method according to third or fourth aspect.
[0012] In an eighth aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus at least to perform at least the method according to third or fourth aspect.
[0013] In a ninth aspect, there is provided a terminal device. The terminal device comprises: determining circuitry configured to determine a measurement and reporting cycle to be used during low power-wake up signal (LP-WUS) monitoring; first performing circuitry configured to perform the LP-WUS monitoring; and second performing circuitry configured to perform at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.
[0014] In a tenth aspect, there is provided a network device. The network device comprises receiving circuitry configured to receive, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring.
[0015] It is to be understood that the summary section is not intended to identify key or essential features of embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will become easily comprehensible through the following description.BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Some exemplary embodiments will now be described with reference to the accompanying drawings, in which:
[0017] Fig. 1A illustrates an example of a network environment in which some exemplary embodiments of the present disclosure may be implemented;
[0018] Fig. 1B illustrates a schematic diagram of UE operations with low-power wake-up receiver (WUR) based on which some exemplary embodiments of the present disclosure may be implemented;
[0019] Fig. 2 illustrates a flowchart illustrating a communication process in accordance with some exemplary embodiments of the present disclosure;
[0020] Fig. 3 illustrates a flowchart of an example method implemented at a terminal device in accordance with some exemplary embodiments of the present disclosure;
[0021] Fig. 4 illustrates another flowchart of an example method implemented at a network device in accordance with some exemplary embodiments of the present disclosure; and
[0022] Fig. 5 illustrates a simplified block diagram of a device that is suitable for implementing some exemplary embodiments of the present disclosure; and
[0023] Fig. 6 illustrates a block diagram of an example of a computer-readable medium in accordance with some exemplary embodiments of the present disclosure.
[0024] Throughout the drawings, the same or similar reference numerals represent the same or similar elements.DETAILED DESCRIPTION
[0025] Principles of the present disclosure will now be described with reference to some exemplary embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. The disclosure described herein may be implemented in various manners other than the ones described below.
[0026] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0027] References in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0028] It shall be understood that although the terms “first” and “second” etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of exemplary embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” , “comprising” , “has” , “having” , “includes” and / or “including” , when used herein, specify the presence of stated features, elements, and / or components etc., but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. As used herein, “at least one of the following: <a list of two or more elements>” and “at least one of <a list of two or more elements>” and similar wording, where the list of two or more elements are joined by “and” or “or” , mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements.
[0030] As used in this application, the term “circuitry” may refer to one or more or all of the following:
[0031] (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry) and
[0032] (b) combinations of hardware circuits and software, such as (as applicable) :
[0033] (i) a combination of analog and / or digital hardware circuit (s) with software / firmware and
[0034] (ii) any portions of hardware processor (s) with software (including digital signal processor (s) ) , software, and memory (ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) and
[0035] (c) hardware circuit (s) and or processor (s) , such as a microprocessor (s) or a portion of a microprocessor (s) , that requires software (for example, firmware) for operation, but the software may not be present when it is not needed for operation.
[0036] This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
[0037] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) and so on. Furthermore, the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the fourth generation (4G) , 4.5G, the future fifth generation (5G) communication protocols, and / or any other protocols either currently known or to be developed in the future. Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system.
[0038] As used herein, the term “network device” (also referred to as “network node” ) refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom. The network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth, depending on the applied terminology and technology.
[0039] The term “terminal device” refers to any end device that may be capable of wireless communication. By way of example rather than limitation, a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) . The terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (for example, remote surgery) , an industrial device and applications (for example, a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. In the following description, the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
[0040] For the purpose of saving power, a UE architecture is proposed by using a low-power wake-up signal (LP-WUS) to trigger the main radio and a separate receiver which has the ability to monitor wake-up signal with ultra-low power consumption. Main radio (MR) works for data transmission and reception, which may be turned off or set to deep sleep unless it is turned on. Basically, the NW triggers the UE to wake-up exactly when needed in an event-driven manner, by transmitting a special WUS to the UE, which is monitored by the dedicated low power wake-up signal (LP-WUS) receiver at the UE. When a UE receives the LP-WUS, the LP-WUS receiver (LR) may trigger the wake-up of the ordinary NR transceiver and communication may start. Thus, the LR wakes up the main radio (MR) and otherwise, the main radio is OFF or kept in a various sleep mode, e.g., deep sleep mode.
[0041] However, recently, power saving mechanism in radio resource control (RRC) _CONNECTED has been listed as one of the objectives for Rel-19 LP-WUS work item. For CONNECTED mode, it allows UE MR physical downlink control channel (PDCCH) monitoring triggered by LP-WUS but such operation should not cause any delay in. ata transmission and. eception. In other words, for CONNECTED mode, above mentioned UE MR ultra-deep sleep is not considered, and the UE measurement and reporting are performed by the MR.
[0042] Depending on the LP-WUS configuration, LP-WUS is monitored regardless of active time, e.g., ON-DURATION, and the UE is not going to monitor PDCCH during e.g., ON-DURATION, while monitoring LP-WUS. However, the DRX cycle may still be used for other purpose such as CSI reporting with CSI mask, and when performing the measurement and measurement report, the DRX cycle may be switched between the short DRX cycle and the long DRX cycle based on the DRX cycle timer.
[0043] However, during LP-WUS monitoring, the UE would need to use a specific DRX cycle without autonomously switching from one DRX cycle to another DRX cycle. Therefore, there is a need to handle DRX cycle or DRX cycle timer while the UE is monitoring LP-WUS. Further, if the PDCCH monitoring is triggered by the reception of the LP-WUS, there is also a need to handle the DRX cycle and the related timer during the PDCCH monitoring.
[0044] In view of the above, some embodiments of the present disclosure propose a solution of lower power wake-up signal operation. Specifically, in some embodiments of the present disclosure, a terminal device determines a measurement and reporting cycle to be used during low power-wake up signal (LP-WUS) monitoring, performs the LP-WUS monitoring, and performs at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle. In this way, the terminal device may use a determined measurement and reporting cycle for measurement report during LP-WUS monitoring without switching between difference measurement and reporting cycles.
[0045] For illustrative purposes, principles and example embodiments of the present disclosure for lower power wake-up signal operation will be described below with reference to Figs. 1A-6. However, it is to be noted that these embodiments are given to enable the skilled in the art to understand concepts of the present disclosure and implement the solution as proposed herein, and not intended to limit scope of the present application in any way.
[0046] Fig. 1A illustrates an example of a network environment 100 in which some exemplary embodiments of the present disclosure may be implemented. In the descriptions of the exemplary embodiments of the present disclosure, the network environment 100 may also be referred to as a communication system 100 (for example, a portion of a communication network) . For illustrative purposes only, various aspects of exemplary embodiments will be described in the context of one or more terminal devices and network devices that communicate with one another. It should be appreciated, however, that the description herein may be applicable to other types of apparatus or other similar apparatuses that are referenced using other terminology.
[0047] The network device 110 may provide services to the terminal device 120, and the network device 110 and the terminal device 120 may communicate data and control information with each other. In some exemplary embodiments, the network device 110 and the terminal device 120 may communicate with direct links / channels.
[0048] In the communication system 100, a link from the network device 110 to the terminal device 120 is referred to as a downlink (DL) , while a link from the terminal device 120 to the network device 110 is referred to as an uplink (UL) . In downlink, the network device 110 is a transmitting (TX) device (or a transmitter) and the terminal device 120 is a receiving (RX) device (or a receiver) . In uplink, the terminal device 120 is a transmitting (TX) device (or a transmitter) and the network device 110 is a RX device (or a receiver) . It is to be understood that the network device 110 may provide one or more serving cells. As illustrated in Fig. 1A, the network device 110 provides one serving cell 102, and the terminal device 120 camps on the serving cell 102. In some exemplary embodiments, the network device 110 may provide multiple serving cells. It is to be understood that the number of serving cell (s) shown in Fig. 1A is for illustrative purposes only without suggesting any limitation.
[0049] Communications in the network environment 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and / or any other protocols currently known or to be developed in the future. Moreover, the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA) , Frequency Division Multiple Access (FDMA) , Time Division Multiple Access (TDMA) , Frequency Division Duplex (FDD) , Time Division Duplex (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiple (OFDM) , Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and / or any other technologies currently known or to be developed in the future.
[0050] It is to be understood that the number of devices and their connection relationships and types shown in Fig. 1A are for illustrative purposes only without suggesting any limitation. The communication system 100 may comprise any suitable number of devices adapted for implementing embodiments of the present disclosure.
[0051] Fig. 1B illustrates a schematic diagram of operations of UE 150 with low-power wake-up receiver (WUR) based on which some exemplary embodiments of the present disclosure may be implemented. Such a UE 150 primarily targets low-power WUS / WUR for power-sensitive, small form-factor devices including IoT use cases (such as industrial sensors, controllers) and wearables. Other use cases are not precluded, e.g. XR / smart glasses, smart phones. As illustrated in Fig. 1B, the UE 150 includes a main radio 170 and a separate receiver, i.e., an ultra-low power wake-up receiver 160.
[0052] The main radio 170 of the UE 150 can be in a sleep mode (or even powered off) for power saving and be activated only upon the reception of the wake-up signal from the network (e.g., from a network device) . Basically, the network triggers the UE 150 to wake-up exactly when needed in an event-driven manner, by transmitting a special WUS to the UE 150, which is monitored by the dedicated low-power WUS receiver 160 at the UE 150. When the UE 150 receives the WUS, the WUS receiver 160 can trigger the wake-up of the ordinary NR transceiver (which is included in the main radio 170) and communication can start. Thus, the low power wake-up receiver (LR) 160 wakes up the main radio 170 and otherwise, the main radio 170 is OFF or kept in a deep sleep mode, as shown in Figure 1B.
[0053] As mentioned above, power saving mechanism in RRC_CONNECTED has been listed as one of the objectives for Rel-19 LP-WUS work item. For CONNECTED mode, above mentioned UE MR ultra-deep sleep is not considered, and the UE measurement and CSI reporting are still performed by the MR. For DRX operation, ON-DURATION defines not only the time period where the UE shall monitor the PDCCH but also the time period for CSI report with CSI masking.
[0054] In this CONNECTED mode, the DRX cycle may still be used for other purpose such as CSI reporting with CSI mask, and during the measurement CSI report, the DRX cycle is switched between the short DRX cycle and the long DRX cycle. That is to say, the DRX cycle for the CSI reporting can be switched between the short DRX cycle and the long DRX cycle when the CSI masking is used.
[0055] For example, when CSI masking is used, the UE performs CSI reporting on ON-DURATION, of which the periodicity is dependent on short DRX cycle or long DRX cycle. The use of DRX cycle is always based on the drx-ShortCycleTimer, and the expiry of the drx-ShortCycleTimer makes the UE to use Long DRX cycle. That is to say, if the drx-ShortCycleTimer for a DRX group expires, it will use the Long DRX cycle for this DRX group. That is to say, when there is no LP-WUS monitoring, use of the short DRX cycle is always based on the drx-ShortCycleTimer and expiry of drx-ShortCycleTimer leads to use of long DRX cycle. Therefore, when CSI masking is used and there is no LP-WUS monitoring, the DRX cycle is switching from short DRX cycle to long DRX cycle for CSI reporting based on DRX timers, e.g., drx-ShortCycleTimer.
[0056] However, when there is LP-WUS monitoring, the UE would need to use a specific DRX cycle without autonomously switching from one DRX cycle to another DRX cycle. For example, given that the LP-WUS monitoring is to let the UE wait for further scheduling with less power consumption, it maybe be desirable for the network to get a frequent CSI reporting during LP-WUS monitoring so that it can properly schedule the UE when needed, hence using the short DRX cycle. On the other hand, it might be preferable to use long DRX cycle during LP-WUS due to no data activity. Therefore, there is a need to handle DRX cycle or DRX cycle timer for CSI reporting while the UE is monitoring LP-WUS.
[0057] For example, one way not to let the drx-ShortCycleTimer expire during LP-WUS monitoring is that the gNB sends a DRX command MAC CE before drx-ShortCycleTimer expires. However, this may not be possible, since for CONNECTED mode, it also allows UE MR to perform PDCCH monitoring triggered by LP-WUS including activation and deactivation procedure of LP-WUS monitoring, and that is to say, LP-WUS is monitored outside active time and the UE is not going to monitor PDCCH while monitoring LP-WUS. Therefore, for the RRC CONNECTED mode, it is defined that UE PDCCH monitoring is not triggered by DRX cycle and drx-onDuration Timer when monitoring LP-WUS, but is triggered by reception of LP-WUS with DRX configuration. Accordingly, there is also a need for handling DRX cycle and the related timer during the PDCCH monitoring.
[0058] Fig. 2 illustrates a flowchart illustrating a communication process 200 in accordance with some exemplary embodiments of the present disclosure. For the purpose of discussion, the communication process 200 will be described with reference to Fig. 1A. It would be appreciated that although the communication process 200 has been described referring to the network environment 100 of Fig. 1A, this communication process 200 may be likewise applied to other similar communication scenarios.
[0059] As shown in Fig. 2, the terminal device 202 determines (205) a measurement and reporting cycle to be used during LP-WUS monitoring; and then terminal device 202 performs (210) the LP-WUS monitoring, and then performs (215) at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement or reporting cycle. Then, during the LP-WUS monitoring, the terminal device 202 transmits (220) the measurement report 203 to the network device 201 based on the determined measurement or reporting cycle, and the network device 201 receives (225) the measurement report 203 during LP-WUS monitoring by the terminal device.
[0060] In some embodiments, the measurement or reporting cycle to be used during the LP-WUS monitoring comprises at least one of the following: a short DRX cycle; a long DRX cycle; or a separate measurement or reporting cycle different from the short DRX cycle and the long DRX cycle. That is to say, the measurement or reporting cycle to be used during the LP-WUS monitoring can be a short DRX cycle, a long DRX cycle, or a separate measurement or reporting cycle different from the short DRX cycle and the long DRX cycle. The determined measurement or reporting cycle may be configured by the network device to be default or the measurement or reporting cycle may be predefined in the specification.
[0061] For example, the terminal device 202 keeps using the short DRX cycle for CSI reporting during LP-WUS monitoring when the default measurement cycle is set to short DRX cycle, or the gNB or the network device 201 indicates to keep using the short DRX cycle. It means that, if the gNB does not set the short DRX cycle as the default cycle or does not indicate to keep using the short DRX cycle, the UE may use long DRX cycle or a separate measurement cycle for CSI reporting during LP-WUS monitoring. Further, if the UE is configured or predefined to use long DRX cycle for CSI reporting during LP-WUS monitoring, the UE may stop the drx-ShortCycleTimer when starting LP-WUS monitoring.
[0062] By determining a default measurement and reporting cycle for the terminal device to be used during the LP-WUS monitoring, the terminal device may use this default measurement and reporting cycle for CSI reporting during the LP-WUS monitoring without switching of the DRX cycle.
[0063] In some embodiments, the default measurement and reporting cycle is predefined in the specification. In some embodiments, the default measurement and reporting cycle is configured or indicated by the network device 201, and the terminal device 202 may receive the determined or default measurement and reporting cycle via a physical signaling; a medium access control (MAC) signaling; or a radio resource control (RRC) signaling, for example, the last MAC CE before entering LP-WUS mode. That is to say, the gNB may indicate which measurement cycle the UE uses for CSI reporting during LP-WUS monitoring via PHY / MAC / RRC signalling (e.g. the last MAC CE before entering LP-WUS mode) .
[0064] In some embodiments, the network device 201 may transmit the indication of the measurement and reporting cycle to be used during the LP-WUS monitoring via a specific variant of the LP-WUS, and the specific variant may represent the determined measurement and reporting cycle via payload, sequence, or physical resource (for example, location) . For example, the gNB indicates the default measurement and reporting cycle, via e.g., MAC CE, or a specific variant of LP-WUS (in which the default measurement and reporting cycle is distinguished by payload, sequence or location) . In this event, the specific variant of LP-WUS is linked to an alternative measurement / CSI reporting cycle during LP-WUS monitoring.
[0065] In order to ensure that the terminal device 202 will keep use the determined or default measurement and reporting cycle during LP-WUS monitoring, there is also a need to handle the drx-ShortCycleTimer, the expiry of which usually causes the terminal device to use the long DRX cycle. That is to say, when UE optionally stops PDCCH monitoring and starts monitoring of the LP-WUS and the UE starts the default measurement and reporting cycle (for example, the short DRX cycle, the long DRX cycle, or the separate measurement and reporting cycle) or keeps on using this default measurement and reporting cycle, there could be several ways for handling the drx-ShortCycleTimer.
[0066] Hereinafter, the embodiments for handling the drx-ShortCycleTimer to prevent switching between a first DRX cycle (for example, a short DRX cycle) and a second DRX cycle (for example, a long DRX cycle) during LP-WUS monitoring will be described.
[0067] In some embodiments, the terminal device 202 may perform the LP-WUS monitoring by: using the determined measurement and reporting cycle, regardless of a running status of a DRX cycle timer associated with a short DRX cycle during the LP-WUS monitoring. In these embodiments, the UE uses short or long or separated cycle as configured or predefined or indicated, regardless of the drx-ShortCycleTimer running status during LP-WUS monitoring, and it means that the UE ignores the expiry of the drx-ShortCycleTimer during LP-WUS monitoring. In these embodiments, the UE does not maintain the drx-ShortCycleTimer during LP-WUS monitoring.
[0068] In some embodiments, the terminal device 202 may perform the LP-WUS monitoring by: starting, restarting, or suspending a DRX cycle timer associated with a short DRX cycle, when starting the LP-WUS monitoring; and using the short DRX cycle when the DRX cycle timer is running or suspended. In some embodiments, when starting the LP-WUS monitoring, the terminal device may start or restart a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device.
[0069] For example, the UE (re) starts and suspend drx-ShortCycleTimer when it starts LP-WUS monitoring. Short DRX cycle is used when drx-ShortCycleTimer is running or suspended. However, upon reception of PDCCH after LP-WUS reception, it resumes the drx-ShortCycleTimer. In these embodiments, the UE also does not maintain the drx-ShortCycleTimer during LP-WUS monitoring.
[0070] In some embodiments, the terminal device may perform the LP-WUS monitoring by stopping a DRX cycle timer associated with a short DRX cycle if running when starting the LP-WUS monitoring; and using the determined measurement and reporting cycle, for example, the short DRX cycle, the long DRX cycle, or the separate measurement and reporting cycle. For example, the UE stops drx-ShortCycleTimer if running when it starts LP-WUS monitoring and starts to use Long DRX cycle. In these embodiments, the UE also does not maintain the drx-ShortCycleTimer during LP-WUS monitoring.
[0071] In some embodiments, the terminal device 202 may perform the LP-WUS monitoring by: maintaining a DRX cycle timer associated with a short DRX cycle to run during the LP-WUS monitoring; and keeping on using the short DRX cycle. For example, when the drx-ShortCycleTimer expires during LP-WUS monitoring, the UE starts the drx-ShortCycleTimer again and keeps on using the short DRX cycle. In some embodiments, when the drx-ShortCycleTimer expires, if the UE is monitoring PDCCH, the UE starts using the Long DRX cycle.
[0072] In some embodiments, in performing the LP-WUS monitoring, the terminal device may stop a DRX cycle timer associated with a short DRX cycle when starting the LP-WUS monitoring. In addition, the terminal device may start a further timer when starting the LP-WUS monitoring, and a value of the further timer is configured by the network device. In some embodiments, the terminal device may perform the reporting by performing reporting based on OnDuration when the further timer is running. The OnDuration is defined based on a short DRX cycle configuration, a long DRX cycle configuration, or a separate measurement or reporting cycle configuration for the LP-WUS monitoring; and stop reporting when the further timer expires.
[0073] For example, a new timer is defined, when the UE starts monitoring of the LP-WUS, the UE starts the new timer, and when the UE starts monitoring of the LP-WUS, the UE stops drx-ShortCycleTimer (if any) , and when the timer is running, the UE performs CSI reporting based on OnDuration, and when the new timer expires, the UE stops CSI reporting based on ON-DURATION. The OnDuration may be defined based on short DRX cycle configuration, long DRX cycle configuration, or a separate configuration for LP-WUS monitoring. The separate configuration may indicate different measurement cycle of CSI reporting, which can be different from the short DRX cycle or long DRX cycle. The gNB may indicate which measurement cycle the UE uses for CSI reporting during LP-WUS monitoring via PHY / MAC / RRC signalling (e.g. the last MAC CE before entering LP-WUS mode) . The value of the timer can be configured by the network and / or transmitted to the UE using e.g., LP-WUS, MAC CE, or RRC signalling.
[0074] As mentioned above, for CONNECTED mode, it also allows UE MR to perform PDCCH monitoring triggered by LP-WUS including activation and deactivation procedure of LP-WUS monitoring, and that is to say, LP-WUS is monitored outside active time and the UE is not going to monitor PDCCH while monitoring LP-WUS.
[0075] In some embodiments, the terminal device may receive, from the network device, an LP-WUS addressing to the terminal device during the LP-WUS monitoring; perform PDCCH monitoring based on the reception of LP-WUS. Upon reception of a PDCCH which indicates a new transmission in downlink or uplink on a serving cell in a DRX group, the terminal device may start or restart a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device in a first symbol after an end of the PDCCH indicating the new transmission.
[0076] For example, when LP-WUS is configured or activated, the UE starts or restarts the drx-ShortCycleTimer, when the UE detects the LP-WUS addressing the UE (i.e., when the UE stops LP-WUS monitoring) .
[0077] The UE may maintain and start the certain timer (for example, a new timer or a drx-InactivityTimer) for transition from LP-WUS monitoring to PDCCH monitoring (as per RAN2 agreement) . In this case, the UE may start or restart the drx-ShortCycleTimer upon reception of PDCCH for the UE during the certain timer is running. The PDCCH may not indicate a DRX command MAC CE, and the PDCCH may indicate a new transmission in DL or UL, and the PDCCH may be addressed to the UE’s cell-radio network temporary identifier (C-RNTI) or configured scheduling RNTI (CS-RNTI) or any RNTI that associated to the UE, and the UE may start the drx-ShortCycleTimer in the first symbol after the end of PDCCH indicating a new transmission. Alternatively, the UE may start or restart the drx-ShortCycleTimer at the same time point when the UE starts PDCCH monitoring, i.e., when the UE starts the certain timer.
[0078] Hereinafter, in view of some embodiments of the present disclosure, some related content may be modified as follows, in which the underlined content (which means added content) may be changes to the related specifications or standards in view of some embodiments of the present disclosure. For example, expected change in the specification TS 38.321 is shown with revision mark. In the example, [timer] is a timer which starts upon detection of LP-WUS, and [timer] could be either a drx-InactivityTimer or a new timer.
[0079] Hereinafter, in view of some embodiments of the present disclosure, some related content may be modified as follows, in which the underlined content (which means added content) may be changes to the related specifications or standards in view of some embodiments of the present disclosure. For example, another expected change in the specification TS 38.321 is shown with revision mark. In the example, [timer] is a timer which starts upon detection of LP-WUS, and [timer] could be either a drx-InactivityTimer or a new timer.
[0080] Hereinafter, in view of some embodiments of the present disclosure, some related content may be modified as follows, in which the underlined content (which means added content) may be changes to the related specifications or standards in view of some embodiments of the present disclosure. For example, still further expected change in the specification TS 38.321 is shown with revision mark. In the example, [timer] is a timer which starts upon detection of LP-WUS, and [timer] it could be either a drx-InactivityTimer or a new timer.
[0081] Fig. 3 illustrates a flowchart of an example method 300 implemented at a terminal device in accordance with some other embodiments of the present disclosure. For the purpose of discussion, the method 300 will be described from the perspective of the terminal device 120 with reference to Fig. 1A.
[0082] At block 310, the terminal device 120 determines a measurement and reporting cycle to be used during LP-WUS monitoring. At block 320, the terminal device 120 performs the LP-WUS monitoring. At block 330, the terminal device 120 performs at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.
[0083] In some embodiments, the measurement and reporting cycle to be used during the LP-WUS monitoring comprises at least one of the following: a short discontinuous reception (DRX) cycle; a long DRX cycle; or a separate measurement or reporting cycle different from the short DRX cycle and the long DRX cycle.
[0084] In some embodiments, the terminal device is caused to perform the LP-WUS monitoring by: using the determined measurement and reporting cycle, regardless of a running status of a DRX cycle timer associated with a short DRX cycle during the LP-WUS monitoring. In some embodiments, the terminal device is caused to perform the LP-WUS monitoring by: starting, restarting, or suspending a DRX cycle timer associated with a short DRX cycle, when starting the LP-WUS monitoring; and using the short DRX cycle when the DRX cycle timer is running or suspended.
[0085] In some embodiments, the terminal device is caused to perform the LP-WUS monitoring by: stopping a DRX cycle timer associated with a short DRX cycle if running when starting the LP-WUS monitoring; and using the determined measurement and reporting cycle. In some embodiments, the terminal device is caused to perform the LP-WUS monitoring by: maintaining a DRX cycle timer associated with a short DRX cycle to run during the LP-WUS monitoring; and keeping on using the short DRX cycle.
[0086] In some embodiments, the terminal device is caused to perform the LP-WUS monitoring by: stopping a DRX cycle timer associated with a short DRX cycle when starting the LP-WUS monitoring; and starting a further timer when starting the LP-WUS monitoring, wherein a value of the further timer is configured by the network device. In some embodiments, the terminal device is caused to perform the reporting by: performing reporting based on OnDuration when the further timer is running, wherein the OnDuration is defined based on a short DRX cycle configuration, a long DRX cycle configuration, or a separate measurement or reporting cycle configuration for the LP-WUS monitoring; and stopping reporting when the further timer expires.
[0087] In some embodiments, the terminal device is caused to receive the determined measurement and reporting cycle to be used during the LP-WUS monitoring via at least one of the following: a physical signaling; a medium access control (MAC) signaling; or a radio resource control (RRC) signaling. In some embodiments, the terminal device is caused to receive the determined measurement and reporting cycle via a specific variant of the LP-WUS which represents the determined measurement and reporting cycle via at least one of the following: payload; sequence; or physical resource.
[0088] In some embodiments, the terminal device is further caused to: receive, from the network device, an LP-WUS addressing to the terminal device during the LP-WUS monitoring; perform PDCCH monitoring based on the reception of LP-WUS; and upon reception of a PDCCH which indicates a new transmission in downlink or uplink on a serving cell in a DRX group, start or restart a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device in a first symbol after an end of the PDCCH indicating the new transmission.
[0089] In some embodiments, the terminal device is further caused to: receive, from the network device, an LP-WUS addressing to the terminal device during the LP-WUS monitoring; perform PDCCH monitoring based on the reception of LP-WUS; and when starting the PDCCH monitoring, start or restart a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device. In some embodiments, the terminal device is further caused to: when starting the LP-WUS monitoring, start or restart a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device.
[0090] Fig. 4 illustrates another flowchart of an example method 400 implemented at a network device in accordance with some other embodiments of the present disclosure. For the purpose of discussion, the method 400 will be described from the perspective of the network device 110 with reference to Fig. 1A.
[0091] At block 410, the network device 110 receives, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring. In some embodiments, the measurement and reporting cycle to be used during the LP-WUS monitoring comprises at least one of the following: a short discontinuous reception (DRX) cycle; a long DRX cycle; or a separate measurement or reporting cycle different from the short DRX cycle and the long DRX cycle.
[0092] In some embodiments, the network device is further caused to: transmit, to the terminal device, an indication of the measurement and reporting cycle to be used during the LP-WUS monitoring. In some embodiments, the network device is caused to transmit the indication of the measurement and reporting cycle to be used during the LP-WUS monitoring via at least one of the following: a physical signaling; a medium access control (MAC) signaling; or a radio resource control (RRC) signaling.
[0093] In some embodiments, the network device is caused to transmit the indication of the measurement and reporting cycle to be used during the LP-WUS monitoring via a specific variant of the LP-WUS which represents the determined measurement and reporting cycle via at least one of the following: payload; sequence; or physical resource.
[0094] In some embodiments, an apparatus (for example, the terminal device 120) capable of performing the method 300 may comprise means for performing the respective steps of the method 300. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
[0095] In some embodiments, the apparatus comprises means for determining a measurement and reporting cycle to be used during LP-WUS monitoring; means for performing the LP-WUS monitoring, and means for performing at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.
[0096] In some embodiments, the measurement and reporting cycle to be used during the LP-WUS monitoring comprises at least one of the following: a short discontinuous reception (DRX) cycle; a long DRX cycle; or a separate measurement or reporting cycle different from the short DRX cycle and the long DRX cycle.
[0097] In some embodiments, means for performing the LP-WUS monitoring may perform the LP-WUS monitoring by: using the determined measurement and reporting cycle, regardless of a running status of a DRX cycle timer associated with a short DRX cycle during the LP-WUS monitoring. In some embodiments, means for performing the LP-WUS monitoring may perform the LP-WUS monitoring by: starting, restarting, or suspending a DRX cycle timer associated with a short DRX cycle, when starting the LP-WUS monitoring; and using the short DRX cycle when the DRX cycle timer is running or suspended.
[0098] In some embodiments, means for performing the LP-WUS monitoring may perform the LP-WUS monitoring by: stopping a DRX cycle timer associated with a short DRX cycle if running when starting the LP-WUS monitoring; and using the determined measurement and reporting cycle. In some embodiments, means for performing the LP-WUS monitoring may perform the LP-WUS monitoring by: maintaining a DRX cycle timer associated with a short DRX cycle to run during the LP-WUS monitoring; and keeping on using the short DRX cycle.
[0099] In some embodiments, means for performing the LP-WUS monitoring may perform the LP-WUS monitoring by: stopping a DRX cycle timer associated with a short DRX cycle when starting the LP-WUS monitoring; and starting a further timer when starting the LP-WUS monitoring, wherein a value of the further timer is configured by the network device. In some embodiments, means for performing reporting may perform the reporting by: performing reporting based on OnDuration when the further timer is running, wherein the OnDuration is defined based on a short DRX cycle configuration, a long DRX cycle configuration, or a separate measurement or reporting cycle configuration for the LP-WUS monitoring; and stopping reporting when the further timer expires.
[0100] In some embodiments, the determined measurement and reporting cycle to be used during the LP-WUS monitoring is received via at least one of the following: a physical signaling; a medium access control (MAC) signaling; or a radio resource control (RRC) signaling. In some embodiments, the determined measurement and reporting cycle is received via a specific variant of the LP-WUS which represents the determined measurement and reporting cycle via at least one of the following: payload; sequence; or physical resource.
[0101] In some embodiments, the apparatus further comprises means for receiving, from the network device, an LP-WUS addressing to the terminal device during the LP-WUS monitoring; perform PDCCH monitoring based on the reception of LP-WUS; and means for upon reception of a PDCCH which indicates a new transmission in downlink or uplink on a serving cell in a DRX group, starting or restarting a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device in a first symbol after an end of the PDCCH indicating the new transmission.
[0102] In some embodiments, the apparatus further comprises means for receiving, from the network device, an LP-WUS addressing to the terminal device during the LP-WUS monitoring; perform PDCCH monitoring based on the reception of LP-WUS; and means for when starting the PDCCH monitoring, starting or restarting a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device. In some embodiments, the apparatus further comprises means for: when starting the LP-WUS monitoring, starting or restarting a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device
[0103] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 300. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0104] In some embodiments, an apparatus (for example, the network device 110) capable of performing the method 400 may comprise means for performing the respective steps of the method 400. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
[0105] In some embodiments, the apparatus comprises means for receiving, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring.
[0106] In some embodiments, the measurement and reporting cycle to be used during the LP-WUS monitoring comprises at least one of the following: a short discontinuous reception (DRX) cycle; a long DRX cycle; or a separate measurement or reporting cycle different from the short DRX cycle and the long DRX cycle.
[0107] In some embodiments, the apparatus further comprises means for transmitting, to the terminal device, an indication of the measurement and reporting cycle to be used during the LP-WUS monitoring. In some embodiments, the indication of the measurement and reporting cycle to be used during the LP-WUS monitoring is transmitted via at least one of the following: a physical signaling; a medium access control (MAC) signaling; or a radio resource control (RRC) signaling.
[0108] In some embodiments, the indication of the measurement and reporting cycle to be used during the LP-WUS monitoring is transmitted via a specific variant of the LP-WUS which represents the determined measurement and reporting cycle via at least one of the following: payload; sequence; or physical resource.
[0109] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 400. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0110] Fig. 5 illustrates a simplified block diagram of a device 500 that is suitable for implementing some exemplary embodiments of the present disclosure. The device 500 may be provided to implement a communication device, for example, the network device 110 or the terminal device 120 as shown in Fig. 1A. As shown, the device 500 includes one or more processors 510, one or more memories 520 coupled to the processor 510, and one or more communication modules 540 coupled to the processor 510.
[0111] The communication module 540 is for bidirectional communications. The communication module 540 has at least one antenna to facilitate communication. The communication interface may represent any interface that is necessary for communication with other network elements.
[0112] The processor 510 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 500 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
[0113] The memory 520 may include one or more non-volatile memories and one or more volatile memories. Examples of the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 524, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , and other magnetic storage and / or optical storage. Examples of the volatile memories include, but are not limited to, a random access memory (RAM) 522 and other volatile memories that will not last in the power-down duration.
[0114] A computer program 530 includes computer executable instructions that are executed by the associated processor 510. The program 530 may be stored in the ROM 524. The processor 510 may perform any suitable actions and processing by loading the program 530 into the RAM 522.
[0115] The embodiments of the present disclosure may be implemented by means of the program 530 so that the device 500 may perform any process of the disclosure as discussed with reference to Fig. 2. The embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
[0116] In some exemplary embodiments, the program 530 may be tangibly contained in a computer-readable medium which may be included in the device 500 (such as in the memory 520) or other storage devices that are accessible by the device 500. The device 500 may load the program 530 from the computer-readable medium to the RAM 522 for execution. The computer-readable medium may include any types of tangible non-volatile storage, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
[0117] Fig. 6 illustrates a block diagram of an example of a computer-readable medium 1000 in accordance with some exemplary embodiments of the present disclosure. The computer-readable medium 600 has the program 530 stored thereon. It is noted that although the computer-readable medium 600 is depicted in form of CD or DVD, the computer-readable medium 600 may be in any other form suitable for carry or hold the program 530.
[0118] Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
[0119] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the method 300 or 400 as described above with reference to Fig. 3 or 4. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
[0120] Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
[0121] In the context of the present disclosure, the computer program codes or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above. Examples of the carrier include a signal, computer-readable medium, and the like.
[0122] The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer-readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. The term “non-transitory, ” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM) .
[0123] Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.
[0124] Although the present disclosure has been described in languages specific to structural features and / or methodological acts, it is to be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims
1.A terminal device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to:determine a measurement and reporting cycle to be used during low power-wake up signal (LP-WUS) monitoring;perform the LP-WUS monitoring; andperform at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.2.The terminal device of claim 1, wherein the measurement and reporting cycle to be used during the LP-WUS monitoring comprises at least one of the following:a short discontinuous reception (DRX) cycle;a long DRX cycle; ora separate measurement or reporting cycle different from the short DRX cycle and the long DRX cycle.3.The terminal device of claim 1, wherein the terminal device is caused to perform the LP-WUS monitoring by:using the determined measurement and reporting cycle, regardless of a running status of a DRX cycle timer associated with a short DRX cycle during the LP-WUS monitoring.4.The terminal device of claim 1, wherein the terminal device is caused to perform the LP-WUS monitoring by:starting, restarting, or suspending a DRX cycle timer associated with a short DRX cycle, when starting the LP-WUS monitoring; andusing the short DRX cycle when the DRX cycle timer is running or suspended.5.The terminal device of claim 1, wherein the terminal device is caused to perform the LP-WUS monitoring by:stopping a DRX cycle timer associated with a short DRX cycle if running when starting the LP-WUS monitoring; andusing the determined measurement and reporting cycle.6.The terminal device of claim 1, wherein the terminal device is caused to perform the LP-WUS monitoring by:maintaining a DRX cycle timer associated with a short DRX cycle to run during the LP-WUS monitoring; andkeeping on using the short DRX cycle.7.The terminal device of claim 1, wherein the terminal device is caused to perform the LP-WUS monitoring by:stopping a DRX cycle timer associated with a short DRX cycle when starting the LP-WUS monitoring; andstarting a further timer when starting the LP-WUS monitoring, wherein a value of the further timer is configured by the network device.8.The terminal device of claim 7, wherein the terminal device is caused to perform the reporting by:performing reporting based on OnDuration when the further timer is running, wherein the OnDuration is defined based on a short DRX cycle configuration, a long DRX cycle configuration, or a separate measurement or reporting cycle configuration for the LP-WUS monitoring; andstopping reporting when the further timer expires.9.The terminal device of any of claims 1 to 8, wherein the terminal device is caused to receive the determined measurement and reporting cycle to be used during the LP-WUS monitoring via at least one of the following:a physical signaling;a medium access control (MAC) signaling; ora radio resource control (RRC) signaling.10.The terminal device of any of claims 1 to 9, wherein the terminal device is caused to receive the determined measurement and reporting cycle via a specific variant of the LP-WUS which represents the determined measurement and reporting cycle via at least one of the following:payload;sequence; orphysical resource.11.The terminal device of any of claims 1 to 10, wherein the terminal device is further caused to:receive, from the network device, an LP-WUS addressing to the terminal device during the LP-WUS monitoring;perform Physical Downlink Control Channel (PDCCH) monitoring based on the reception of LP-WUS; andupon reception of a PDCCH which indicates a new transmission in downlink or uplink on a serving cell in a DRX group, start or restart a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device in a first symbol after an end of the PDCCH indicating the new transmission.12.The terminal device of any of claims 1 to 10, wherein the terminal device is further caused to:receive, from the network device, an LP-WUS addressing to the terminal device during the LP-WUS monitoring;perform PDCCH monitoring based on the reception of LP-WUS; andwhen starting the PDCCH monitoring, start or restart a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device.13.The terminal device of any of claims 1 to 12, wherein the terminal device is further caused to:when starting the LP-WUS monitoring, start or restart a DRX timer associated with a short DRX cycle for a plurality of DRX groups configured for the terminal device.14.A network device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to:receive, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring.15.The network device of claim 14, wherein the measurement and reporting cycle to be used during the LP-WUS monitoring comprises at least one of the following:a short discontinuous reception (DRX) cycle;a long DRX cycle; ora separate measurement or reporting cycle different from the short DRX cycle and the long DRX cycle.16.The network device of claim 14 or 15, wherein the network device is further caused to:transmit, to the terminal device, an indication of the measurement and reporting cycle to be used during the LP-WUS monitoring.17.The network device of any of claims 14 to 16, wherein the network device is caused to transmit the indication of the measurement and reporting cycle to be used during the LP-WUS monitoring via at least one of the following:a physical signaling;a medium access control (MAC) signaling; ora radio resource control (RRC) signaling.18.The network device of any of claims 14 to 17, wherein the network device is caused to transmit the indication of the measurement and reporting cycle to be used during the LP-WUS monitoring via a specific variant of the LP-WUS which represents the determined measurement and reporting cycle via at least one of the following:payload;sequence; orphysical resource.19.A method at a terminal device comprising:determining a measurement and reporting cycle to be used during low power-wake up signal (LP-WUS) monitoring;performing the LP-WUS monitoring; andperforming at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.20.A method at a network device comprising:receiving, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring.21.An apparatus comprising:means for determining a measurement and reporting cycle to be used during low power-wake up signal (LP-WUS) monitoring;means for performing the LP-WUS monitoring; andmeans for performing at least one of a measurement or reporting during the LP-WUS monitoring based on the determined measurement and reporting cycle.22.An apparatus comprises:means for receiving, from a terminal device, a measurement report during low power-wake up signal (LP-WUS) monitoring by the terminal device, wherein the measurement report is based on a measurement and reporting cycle determined for use during the LP-WUS monitoring.23.A computer readable medium comprising program instructions for causing an apparatus to perform at least the method of claim 19 or 20.
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