Public warning system message reception
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2026-08-13
Smart Images

Figure CN2025076329_13082026_PF_FP_ABST
Abstract
Description
PUBLIC WARNING SYSTEM MESSAGE RECEPTIONFIELD
[0001] Various example embodiments of the present disclosure generally relate to the field of telecommunication and in particular, to methods, devices, apparatuses and computer readable storage medium for public warning system (PWS) message reception.BACKGROUND
[0002] A communication network may serve 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. A communication device may be provided with a service by an application server. Some communication networks support a warning message transmission, such as a PWS message broadcasting for terminal devices.SUMMARY
[0003] In a first aspect of the present disclosure, there is provided a first apparatus. The first apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus to: receive, from a second apparatus, a configuration of at least one time gap associated with a PWS message; and during the at least one time gap, stop user-specific data transfer and stop monitoring for scheduling of user-specific data transfer; and receive at least one of: the PWS message, or an indication associated with the PWS message, the indication comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0004] In a second aspect of the present disclosure, there is provided a second apparatus. The second apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second apparatus to: transmit, to at least one first apparatus, a configuration of at least one time gap associated with a PWS message; and during the at least one time gap, transmit, to the at least one first apparatus, at least one of: the PWS message, or an indication associated with the PWS message, the indication associated with the PWS message comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0005] In a third aspect of the present disclosure, there is provided a method. The method comprises: receiving, from a second apparatus, a configuration of at least one time gap associated with a PWS message; and during the at least one time gap, stopping user-specific data transfer and stopping monitoring for scheduling of user-specific data transfer; and receiving at least one of: the PWS message, or an indication associated with the PWS message, the indication comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0006] In a fourth aspect of the present disclosure, there is provided a method. The method comprises: transmitting, to at least one first apparatus, a configuration of at least one time gap associated with a PWS message; and during the at least one time gap, transmitting, to the at least one first apparatus, at least one of: the PWS message, or an indication associated with the PWS message, the indication associated with the PWS message comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0007] In a fifth aspect of the present disclosure, there is provided a first apparatus. The first apparatus comprises means for receiving, from a second apparatus, a configuration of at least one time gap associated with a PWS message; and means for during the at least one time gap, stopping user-specific data transfer and stopping monitoring for scheduling of user-specific data transfer; and receiving at least one of: the PWS message, or an indication associated with the PWS message, the indication comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0008] In a sixth aspect of the present disclosure, there is provided a second apparatus. The second apparatus comprises means for transmitting, to at least one first apparatus, a configuration of at least one time gap associated with a PWS message; and means for during the at least one time gap, transmitting, to the at least one first apparatus, at least one of: the PWS message, or an indication associated with the PWS message, the indication associated with the PWS message comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0009] In a seventh aspect of the present disclosure, there is provided a computer readable medium. The computer readable medium comprises instructions stored thereon for causing an apparatus to perform at least the method according to the third aspect.
[0010] In an eighth aspect of the present disclosure, there is provided a computer readable medium. The computer readable medium comprises instructions stored thereon for causing an apparatus to perform at least the method according to the fourth aspect.
[0011] 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
[0012] Some example embodiments will now be described with reference to the accompanying drawings, where:
[0013] FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented;
[0014] FIG. 2 illustrates an example signaling flow for PWS message reception in accordance with some example embodiments of the present disclosure;
[0015] FIG. 3 illustrates another example signaling flow for PWS message reception in accordance with some example embodiments of the present disclosure;
[0016] FIG. 4 illustrates another example signaling flow for PWS message reception in accordance with some example embodiments of the present disclosure;
[0017] FIG. 5 illustrates a flowchart of a method implemented at a first apparatus in accordance with some example embodiments of the present disclosure;
[0018] FIG. 6 illustrates a flowchart of a method implemented at a second apparatus in accordance with some example embodiments of the present disclosure;
[0019] FIG. 7 illustrates a simplified block diagram of a device that is suitable for implementing example embodiments of the present disclosure; and
[0020] FIG. 8 illustrates a block diagram of an example computer readable medium in accordance with some example embodiments of the present disclosure.
[0021] Throughout the drawings, the same or similar reference numerals represent the same or similar element.DETAILED DESCRIPTION
[0022] Principle of the present disclosure will now be described with reference to some example 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. Embodiments described herein can be implemented in various manners other than the ones described below.
[0023] 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.
[0024] 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.
[0025] It shall be understood that although the terms “first, ” “second, ” …, etc. in front of noun (s) and the like 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 and they do not limit the order of the noun (s) . 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 example embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0026] 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.
[0027] As used herein, unless stated explicitly, performing a step “in response to A” does not indicate that the step is performed immediately after “A” occurs and one or more intervening steps may be included.
[0028] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example 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.
[0029] As used in this application, the term “circuitry” may refer to one or more or all of the following: (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry) and (b) combinations of hardware circuits and software, such as (as applicable) : (i) a combination of analog and / or digital hardware circuit (s) with software / firmware and (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 (c) hardware circuit (s) and or processor (s) , such as a microprocessor (s) or a portion of a microprocessor (s) , that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation.
[0030] 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.
[0031] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as New Radio (NR) , 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 first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) , 5.5G, the sixth generation (6G) 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.
[0032] As used herein, the term “network device” 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) , an NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, an Integrated Access and Backhaul (IAB) node, a low power node such as a femto, a pico, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, an aircraft network device, and so forth, depending on the applied terminology and technology. In some example embodiments, radio access network (RAN) split architecture comprises a Centralized Unit (CU) and a Distributed Unit (DU) at an IAB donor node. An IAB node comprises a Mobile Terminal (IAB-MT) part that behaves like a UE toward the parent node, and a DU part of an IAB node behaves like a base station toward the next-hop IAB node.
[0033] 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 (IoT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., 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. The terminal device may also correspond to a Mobile Termination (MT) part of an IAB node (e.g., a relay node) . In the following description, the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
[0034] As used herein, the term “resource, ” “transmission resource, ” “resource block, ” “physical resource block” (PRB) , “uplink resource, ” or “downlink resource” may refer to any resource for performing a communication, for example, a communication between a terminal device and a network device, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other combination of the time, frequency, space and / or code domain resource enabling a communication, and the like. In the following, unless explicitly stated, a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
[0035] FIG. 1 shows an example communication environment 100 in which example embodiments of the present disclosure can be implemented. In the communication environment 100, a plurality of apparatuses including a first apparatus 110 and a second apparatus 120 communicate with each other.
[0036] In some example embodiments, if the first apparatus 110 is a terminal device and the second apparatus 120 is a network device serving the terminal device, a transmission direction from the second apparatus 120 to the first apparatus 110 is referred to as a downlink (DL) , while a transmission direction from the first apparatus 110 to the second apparatus 120 is referred to as an uplink (UL) . In DL, the second apparatus 120 is a transmitting (TX) device (or a transmitter) and the first apparatus 110 is a receiving (RX) device (or a receiver) . In UL, the first apparatus 110 is a TX device (or a transmitter) and the second apparatus 120 is a RX device (or a receiver) .
[0037] In the example of FIG. 1, the second apparatus 120 has a certain coverage range, which may be called as a serving area or a cell (not shown) . The first apparatuses 110 are located in the cell covered by the second apparatus 120. In the communication environment 100, the second apparatus 120 may communicate data and control information to the first apparatus 110 and the first apparatus 110 may also communication data and control information to the second apparatus 120.
[0038] In some example embodiments, the second apparatus 120 may be an NTN device, such as a satellite or a high-altitude platform station (HAPS) . The NTN device may provide a serving area such as a beam or cell for the first apparatus 110. For example, a network device such as gNB or eNB may be located in the second apparatus 120 in regenerative architecture. The network device in the second apparatus 120 may provide the serving area for the first apparatus 110.
[0039] Alternatively, the second apparatus 120 may be a network device communicating with the NTN device. For example, the second apparatus 120 such as gNB or eNB may be connected to the NTN device in transparent architecture. The first apparatus 110 and the second apparatus 120 may communicate with each other through the NTN device. The first apparatus 110 may be a narrowband (NB) terminal device such as a NB-IoT device, or any other suitable device. The NB-IoT device in an NTN network may be referred to as an NB-IoT NTN device.
[0040] It is to be understood that the number of apparatuses and their connections shown in FIG. 1 are only for the purpose of illustration without suggesting any limitation. The communication environment 100 may include any suitable number of apparatuses configured to implementing example embodiments of the present disclosure.
[0041] In the following, for purpose of illustration, some example embodiments are described with the first apparatus 110 operating as a terminal device and the second apparatus 120 operating as a network device. However, in some example embodiments, operations described in connection with a terminal device may be implemented at a network device or other device, and operations described in connection with a network device may be implemented at a terminal device or other device.
[0042] Communications in the communication environment 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols, 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.
[0043] In some mechanisms, IoT NTN may support the PWS by reusing the LTE mechanisms. For example, broadcasting of PWS messages for NB-IoT may be supported by reusing the LTE mechanism. The solutions developed for NTN may be applicable to terrestrial network (TN) if possible. In addition, the support of geo-fencing function for earthquake and tsunami warning system (ETWS) may be considered. Support for indication of intended service area for ETWS may be considered. The support for PWS introduced for NB-IoT NTN may also be made applicable for NB-IoT in TN, if this does not require additional NB-IoT TN specific changes.
[0044] The PWS services may include ETWS and commercial mobile alert system (CMAS) . The PWS indication in direct indication information for NB-IoT such as etws-Indication and cmas-Indication may be applied.
[0045] For NB-IoT NTN PWS, the corresponding LTE SIBs may be applied as a baseline. Some optimizations for the PWS SIBs may be considered or some unnecessary fields may be skipped.
[0046] Upon receiving the PWS notification from NB-IoT cell, the PWS-capable NB-IoT UE may acquire the corresponding PWS message immediately in order to fulfil the latency requirement of acquiring the ETWS, CMAS, PWS.
[0047] However, for NB-IoT NTN UEs in a connected mode, whether to support PWS and / or how to support PWS needs to be considered. Currently, NB-IoT UEs are not required to monitor for paging or receive system information triggered by the paging in the connected mode such as radio resource control (RRC) connected mode.
[0048] The PWS message such as ETWS or CMAS alerts may occur at any point in time. In the PWS for enhanced machine-type communication (eMTC) , the network (NW) may set the etws-indication and cmas-indication bits in paging message or instead use the direct indication information (DII) via downlink control information (DCI) format 6-2 to alert UEs to start receiving system information block 1 (SIB1) and corresponding SIBs for ETWS and CMAS notifications. Both options may be used to inform ETWS and / or CMAS-capable UEs in IDLE mode that are not in coverage enhanced (CE) .
[0049] In some mechanisms, upon receiving an ETWS or CMAS indication via Paging or DII, an eMTC UE in IDLE may be required to initiate the system information (SI) acquisition procedure to ensure a valid version of at least master information block (MIB) , SIB1, and SIB10 / SIB11 or SIB12.
[0050] For eMTC, PWS for RRC Connected UE was introduced. The UE monitors machine type communication (MTC) physical downlink control channel (MPDCCH) in common search space (CSS) with the system information radio network temporary identifier (SI-RNTI) in which the ETWS indication and / or CMAS indication is included in the DCI (i.e., DCI format 6-1A / 1B) . The UE remains in RRC Connected after receiving the indication for corresponding SIB acquisition. However, for NB-IoT, an RRC connected UE is not required to monitor the SI change or paging due to the capability constraint of NB-IoT UE. The eMTC mechanism for RRC connected may not be feasible for NB-IoT UE which targets cost-efficient and simple or low-complexity devices. Instead, the procedure of RRC release is initiated to move UE to RRC Idle mode if PWS is to be delivered to UEs. That is, the NW may release the UEs to RRC idle mode, for example, via RRC Connection Release message, to allow the UE for the corresponding SIBs acquisition. For example, upon system information change that is essential for bandwidth-reduced low complexity UEs (BL UEs) , UEs in CE, or NB-IoT UEs in RRC_CONNECTED, an evolved universal terrestrial radio access network (E-UTRAN) may initiate connection release to allow the UE receiving the updated / changed system information.
[0051] As NB-IoT UE cannot support narrowband PDCCH (NPDCCH) CSS and UE-specific search space (USS) monitoring simultaneously (which means the UE cannot monitor the DCI over NPDCCH for paging message and for UE specific UL / DL grant simultaneously) , the NB-IoT UE cannot get the SIB change notification via paging message (which is a way of the UE in the RRC connected state to be triggered for monitoring updated SIBs) . Thus, the NB IoT UE cannot be triggered to acquire PWS notification delivered by modification of SIBs while in RRC connected state. Therefore, how to enable the NB IoT UE being triggered to acquire PWS notification while being kept in RRC Connected state, but without complicating the NB IoT UE implementation to support simultaneously NPDCCH CSS and USS monitoring has become a concerning problem.
[0052] In order to solve at least part of the above problems or other potential problems, a solution on PWS message reception is proposed. In the solution, a second apparatus such as a network device configures, for a first apparatus such as a terminal device (in RRC Connected mode) , at least one time gap associated with PWS message. For example, the at least one gap may be a set of periodic time gaps. During the at least one time gap, the first apparatus stops user-specific (such as UE-specific) data transfer (i.e. uplink and / or downlink transmission / reception) and stop monitoring for scheduling of user-specific data transfer. In addition, during the at least one time gap, the first apparatus receives the PWS message, and / or an indication associated with the PWS message. The indication associated with the PWS message may be information indicative of the PWS message, and / or scheduling information of the PWS message.
[0053] In this manner, the first apparatus can receive the PWS message or receive indication associated with the PWS message during the configured at least one time gap even if the first apparatus is in a RRC connected mode. As the user-specific data transfer is stopped, the first apparatus may not be required to support simultaneously CSS and USS monitoring. That is, the PWS reception for UE in the RRC connected mode may be achieved for UE without simultaneous CSS and USS monitoring capability.
[0054] FIG. 2 illustrates an example signalling flow 200 for PWS message reception in accordance with some example embodiments of the present disclosure. The signaling flow 200 involves the first apparatus 110 and the second apparatus 120 in FIG. 1.
[0055] In operation, the second apparatus 120 transmits (210) , to the first apparatus 110, a configuration of at least one time gap associated with a PWS message. Correspondingly, the first apparatus 110 receives (215) the configuration. By way of example, the configuration of the at least one time gap may be included in system information such as SIB1, an RRC message such as RRC (re) configuration message, or medium access control control element (MAC CE) , or any other suitable message or signaling.
[0056] In some example embodiments, the configuration of the at least one time gap may include a periodicity of the at least one time gap, and / or a time length of the at least one time gap. In addition, the configuration may further include a time length of an additional time duration after each time gap. For example, in embodiments where the time gap is used for monitoring the PWS indication, the additional time duration after the time gap may be used for receiving the PWS message if the PWS indication is received during the time gap (i.e. the additional time duration becomes conditionally active based on the PWS indication) . In some example embodiments, the configuration of the at least one time gap may include information of at least one common paging occasion associated with the at least one time gap such as paging cycle, a common identifier used by the first apparatus 110 to derive the common paging occasion, or the like. This information may be used for monitoring the paging message related to the PWS indication during the determined the at least one time gap.
[0057] In some example embodiments, the configuration of the at least one time gap may include the scheduling information of the PWS message. For example, the scheduling information of the PWS message may be the same as the information included in SIB1, which indicates the scheduling information of the subsequent SIBs including the PWS message. The scheduling information may schedule the PWS message on the PDSCH. For example, SIB1 may provide a SI message monitoring window in which the first apparatus 110 monitors for DCI that schedules the PDSCH.
[0058] In some example embodiments, the configuration of the at least one time gap may include segmentation information of at least one segment of the PWS message, and / or a configuration of receiving segments of the PWS message from a plurality of cells. For example, the PWS message may be segmented into a plurality of segments. In this way, the PWS segmentation may be supported. The plurality of segments may be transmitted by one or more cells. The second apparatus 120 may inform the first apparatus 110 that the segments of the PWS message may be transmitted by a single cell or apparatus, or by a plurality of cells or apparatuses. In this way, inter-cell reception of the plurality of segments of the PWS message may be supported.
[0059] It is to be understood that these example contents of the configuration are only for the purpose of illustration, without suggesting any limitation. Any other suitable configuration may be configured for the at least one time gap, and embodiments of the present disclosure is not limited here.
[0060] During the at least one time gap, the first apparatus 110 stops (220) user-specific data transfer and stops monitoring for scheduling of user-specific data transfer. In embodiments wherein the first apparatus 110 being a UE, the user-specific data transfer may be UE-specific data transfer. Monitoring the scheduling of user-specific data transfer may be monitoring USS for UE-specific data transfer. The user-specific data transfer may be an uplink data transfer from the first apparatus 110 to the second apparatus 120, and / or a downlink data transfer from the second apparatus 120 to the first apparatus 110.
[0061] During the at least one time gap, the second apparatus 120 transmits (230) , to the first apparatus 110, the PWS message, and / or an indication associated with the PWS message. Correspondingly, the first apparatus 110 receives the PWS message, and / or the indication associated with the PWS message during the at least one time gap. The indication associated with the PWS message includes information indicative of the PWS message, and / or scheduling information of the PWS message. The information indicative of the PWS message may also be referred to as a PWS indication, which indicates that the PWS message is to be transmitted. For example, the PWS indication may indicate that at least one SIB includes the PWS message or at least one segment of the PWS message. For example, the scheduling information of the PWS message indicates that the PWS message or at least one segment of the PWS message may be included in a specific SIB. For another example, the scheduling information of the PWS message indicates the time and frequency domain resources (e.g. the time slots and the PRBs) from which the PWS message or at least one segment of the PWS message may be transmitted.
[0062] By stopping the user-specific data transfer and stopping monitoring scheduling for the user-specific data transfer during the time gap, the first apparatus 110 can monitor the PWS message and / or PWS indication during the time gap. The PWS reception may thus be achieved. In this way, the second apparatus 120 indicates to the relevant first apparatus 110 a new UL transmission (Tx) and DL reception (Rx) gap so that the first apparatus 110 may overcome the capability limitation and be triggered to stop the normal UL Tx and DL Rx procedures and monitor for the PWS notification within the configured gap.
[0063] By way of example, the indication associated with the PWS message may include but not be limited to DCI over a PDCCH / NPDCCH addressed by a PWS radio network temporary identifier (PWS-RNTI) , the DCI including the indication of the PWS message, the DCI including the indication of the PWS message and the scheduling information of the PWS message, a paging message received in a common paging occasion (i.e. scrambled using P-RNTI) , a paging message scheduled with PWS-RNTI, or a paging message including a data part over narrowband physical downlink shared channel (NPDSCH) and the data part including the scheduling information of the PWS message. The first apparatus 110 may monitor DCI and / or paging message to detect the indication associated with the PWS message.
[0064] In some example embodiments, the PWS message may be an ETWS message, a CMAS message, or the like. The PWS message may also be referred to as a PWS notification, a PWS alert, or the like. The PWS message may be segmented into more than one segment. The PWS message or at least one segment of the PWS message may be included in a SIB, i.e., delivered using SIB. By way of example, SIB10 such as SystemInformationBlockType10-NB may be used for primary ETWS notification. SIB11 such as SystemInformationBlockType11-NB may be used for secondary ETWS notification. SIB12 such as SystemInformationBlockType12-NB may be used for CMAS notification. The SIB10, SIB 11 and / or SIB 12 may be referred to as SIB (s) with PWS message or PWS SIB (s) . The scheduling information of the PWS SIB (s) may be included in the SIB1, or any other suitable message. It is to be understood that these examples SIBs are only for the purpose of illustration, without suggesting any limitation. Any other suitable message or SIB may be used for the PWS message, and embodiments of the present disclosure is not limited here.
[0065] Two options of the UL TX / DL Rx gap may be introduced for the network to indicate to the first apparatus 110 to enable potential PWS notification monitoring. In a first option (referred to as Option 1 hereinafter) , the at least one time gap may include a first set of periodic time gaps. A time length of each of the first set of time gaps may be short, but should be sufficient for the second apparatus 120 to deliver the indication associated with PWS message and the first apparatus 110 to monitor and receive the indication reliably. The first set of time gaps may be referred to as a set of short time gaps or short Tx / Rx gap (s) . During the first set of time gaps, the second apparatus 120 may transmit (230) , to the first apparatus 110, the indication associated with the PWS message. Correspondingly, the first apparatus 110 monitors or receives (235) the indication associated with the PWS message during the first set of periodic time gaps. That is, in the first option, a periodic short Tx / Rx gap may be configured by the second apparatus 120 to the relevant first apparatus (es) 110 for stopping or pausing normal UL Tx or DL Rx and monitor the DL NPDCCH for potential PWS indication via DCI or paging message.
[0066] In some example embodiments, the second apparatus 120 may broadcast, to a plurality of apparatuses including the first apparatus 110, the configuration of the at least one time gap such as the first set of periodic time gaps. The second apparatus 120 may determine the first set of periodic time gaps based on a common paging configuration of the plurality of apparatuses such as the first apparatus 110, and / or a system information modification cycle. The common paging configuration may be a common paging cycle and a common identifier used to derive the common paging occasion.
[0067] In some example embodiments, if at least one condition is satisfied, the first apparatus 110 may monitor the indication associated with the PWS message during the first set of periodic time gaps. In an example, the at least one condition may include a condition that the first apparatus 110 is in a connected mode (such as an RRC connected mode or state) to the second apparatus 120. If the first apparatus 110 is in RRC idle more or inactive mode, the first apparatus 110 may not apply the first set of periodic time gaps and may perform a normal procedure to monitor the PWS message. In another example, the at least one condition may include a condition that the first apparatus 110 is without a capability of simultaneous monitoring of common search space and user-specific search space such as USS. For example, if the first apparatus 110 is with the capability of simultaneous monitoring of CSS and USS, the first apparatus 110 may not stop the user-specific data transfer and monitoring for scheduling of user-specific data transfer during the first set of time gaps. In a further example, the at least one condition may include a condition that the first apparatus 110 is with a PWS capability or interest. For example, if the first apparatus 110 is with a PWS capability or interest to the second apparatus 120, the first apparatus 110 may monitor the indication associated with the PWS message during the first set of periodic time gaps.
[0068] It is to be understood that these conditions are only for the purpose of illustration, without suggesting any limitation. Any suitable condition may be applied in a similar way. These conditions and any other suitable condition may be applied separately, or in combination for determining whether to apply the first set of periodic time gaps.
[0069] In one embodiment, the short Tx / Rx gap may be configured by broadcasted signaling such as system information so that all the relevant UEs (e.g. NB IoT UE without capability of support simultaneous monitoring of NPDCCH CSS and USS) may be configured to apply the short Tx / Rx gap if the UE is in RRC Connected state. In a further embodiment, the first apparatus 110 only applies the gap if it is indicated PWS capability / interest to the network, i.e. UEs not in need of PWS will not apply the gap and can continue normal Tx / Rx.
[0070] In another embodiment, the short Tx / Rx gap may be configured by dedicated signaling such as RRC Reconfiguration or MAC CE for the UEs which have indicated PWS capability or interest to the network.
[0071] In some example embodiments, in response to detecting the indication associated with the PWS message within a first time gap of the first set of periodic time gaps, the first apparatus 110 may stop the user-specific data transfer and stop monitoring for scheduling of the user-specific data transfer during an additional time duration after the first time gap. The first apparatus 110 may receive at least one segment of the PWS message during the additional time duration. A length of the time duration may be predefined, or configured by the second apparatus 120. In other words, in response to receiving the indication associated with the PWS message within a time gap, the time gap may be extended. The PWS message or PWS message segment may be received in the extended time gap.
[0072] Alternatively, in a second option (referred to as Option 2 hereinafter) , the at least one time gap may include a second set of periodic time gaps. A length of a time gap in the second set may be sufficient for the second apparatus 120 to deliver the at least one segment of the PWS message and for the first apparatus 110 to receive the at least one segment of the PWS message. The second apparatus 120 may transmit (230) at least one segment of the PWS message during the second set of periodic time gaps. Correspondingly, the first apparatus 110 receives (235) the at least one segment of the PWS message during the second set of periodic time gaps.
[0073] That is, in the second option, a periodic Tx / Rx gap may be indicated by the NW when there is the need of delivering PWS notification and the periodic Tx / Rx gap matches the schedule of corresponding SIBs (e.g. SIB 10-12) for PWS message. During the configured Tx / Rx gap, the first apparatus 110 stops normal UL Tx / DL Rx and start receiving corresponding SIBs of PWS message according to the scheduling information of PWS SIBs if it is provided by the NW together with the Tx / Rx gap configuration. Otherwise, the first apparatus 110 starts receiving the changed or updated SIBs including SIB1 and PWS SIBs during the configured Tx / Rx gaps. The Tx / Rx gap may be configured by dedicated signaling such as RRC Reconfiguration message or MAC CE to the relevant UEs in RRC Connected state.
[0074] The second apparatus 120 may determine that (at least a segment of) the PWS message is to be transmitted to the first apparatus 110 in a connected mode. The second apparatus 120 may then determine the second set of periodic time gaps based on the scheduling information of the PWS message. The second apparatus 120 may transmit (210) the configuration of the second set of periodic time gaps to the first apparatus 110.
[0075] In an example embodiment, the configuration of the at least one time gap further includes the scheduling information of the PWS message. The second apparatus 120 may transmit, to the first apparatus 110, the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information. The first apparatus 110 may receive the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.
[0076] In another example embodiment, the second apparatus 120 may transmit, to the first apparatus 110, first system information during the second set of periodic time gaps. The first system information such as SIB1 indicates the scheduling information of the PWS message. The first apparatus 110 may receive the first system information to obtain the scheduling information of the PWS message. The second apparatus 120 may transmit, to the at least one first apparatus 110, the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information. The first apparatus 110 may receive the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.
[0077] In some example embodiments, in response to receiving at least one segment of the PWS message at a time point within a first time gap (for example, a time gap in the second set) , the first apparatus 110 may perform an corresponding operation. Alternatively, or in addition, in response to receiving at least one segment of the PWS message at a time point within a time duration after the first time gap (for example, a time gap in the first set) , the first apparatus 110 may perform an corresponding operation. In an option, the corresponding operation may be transmitting, to the second apparatus 120, an indication of the reception of the PWS message. In another option, he corresponding operation may be continuing to perform the user-specific data transfer and monitoring for scheduling of user-specific data transfer after the time point. That is, the first time gap may be ended or stopped after the time point. In a further option, the corresponding operation may be applying at least one remaining time gap after the first time gap for monitoring the PWS message or the indication associated with the PWS message.
[0078] In a still further option, the corresponding operation may be ending the at least one remaining time gap. Ending the at least one remaining time gap may refer to disable or not applying the at least one remaining time gap. Specifically, if all segments of the PWS message are received after a first number of time gaps in a set of periodic time gaps, the first apparatus 110 may not apply remaining time gap (s) in the set of periodic time gaps for receiving the PWS message. The first apparatus 110 may perform user-specific data transfer and monitor scheduling for the user-specific data transfer during the remaining time gap (s) .
[0079] In some example embodiments, in response to receiving an indication of the reception of the PWS message from the first apparatus 110, the second apparatus 120 may transmit, to the first apparatus 110, a triggering message indicating the at least one first apparatus 110 to perform a corresponding operation. The corresponding operation may be applying at least one remaining time gap after the reception of the PWS message for monitoring the PWS message or the indication associated with the PWS message; or ending at least one remaining time gap. In some example embodiments, if at least one remaining segment of the PWS message is to be transmitted to the first apparatus 110, the second apparatus 120 may transmit the triggering or configuration message to the first apparatus 110 indicating to applying the at least one remaining time gap. Otherwise, if no remaining segment of the PWS message is to be transmitted to the at least one first apparatus 110, the second apparatus 120 may transmit the triggering or configuration message to the first apparatus 110 indicating to end the at least one remaining time gap.
[0080] The corresponding operation may be to continue a previous transmission or reception repetition after receiving the PWS message, or perform a subsequent transmission or reception after receiving the PWS message. Continuing a previous transmission or reception repetition means that the previous transmission or reception may be performed for certain number of repetitions before the corresponding time gap and then paused during the corresponding time gap, and after receiving the PWS message, this previous transmission or reception may be continued from the repetitions that have been performed before the corresponding time gap. Performing subsequent transmission or reception means that the repetitions of previous transmission or reception may be discarded, and a new transmission or reception from the first repetition such as UE-specific transmission or reception repetition may be performed.
[0081] In some example embodiments, the first apparatus 110 may transmit, to the second apparatus 120, capability information of the first apparatus 110. The capability information indicates a support of PWS related information reception in a connected mode. The PWS related information may be the PWS message such as PWS message segment, or the indication associated with the PWS message. The capability information may also indicate whether the UE is capable of continuing the user-specific data transfer after the gap. The second apparatus 120 may receive the capability information.
[0082] In some example embodiments of Option 1, a new paging message may be introduced during configured short Tx / Rx gap to indicate to the relevant UEs there is PWS message to be delivered so that the UE is triggered to monitor the relevant SIBs of PWS message. The new paging message may be scheduled with PWS-RNTI, which is a new RNTI used to address the new paging message over NPDCCH / PDCCH. Alternatively, the new paging message is scheduled in a new NPDCCH search space dedicated for PWS notification (while the legacy P-RNTI or SI-RNTI can be used for Paging) . The new paging message may be DCI only over NPDCCH / PDCCH to indicate to the UE there is PWS message to be delivered and trigger the UE to read the updated SIBs for getting PWS message. Alternatively, for the DCI may be addressed by the PWS-RNTI or P-RNTI, the interpretation of the DCI bit fields may be different. For example, the DCI bit fields may schedule a PWS SIB instead of the paging message over NPDSCH. Alternatively, the new paging message may have the data part over NPDSCH and include scheduling information of PWS SIBs (e.g. SIB10-12) so that UE is triggered to read PWS SIBs directly without reading other SIB (e.g. MIB, SIB1) .
[0083] In case of Option1, when the RRC Connected UE starts to read the PWS SIBs in the additional time duration, the UE stops or pauses normal UL Tx / DL Rx e.g., stops the user-specific UL transmission or stop monitoring the scheduling for user-specific UL Tx / DL Rx.
[0084] Upon getting a PWS message successfully, UE may be configured to: either autonomously switch back to the normal UL Tx / DL Rx, or indicate to the NW the successful reception of PWS notification and up to NW resume to schedule normal UL Tx / DL Rx in Option 1 or reconfigure the UE switch back to normal UL Tx / DL Rx mode for Option 2.
[0085] Alternatively, upon getting a PWS message successfully, UE may be configured to wait for new NW indication of stop monitoring the new Paging in the gap and switch back to normal UL Tx / DL Rx mode. I. e., NW knows exactly that the broadcasting of the PWS messages (one or more PWS messages received from cell broadcast centre (CBC) ) is completed hence inform the UEs to stop monitoring the new paging accordingly. The new NW indication may be sent to UE using Option1 or option 2 as described above.
[0086] It is to be understood that although in some example embodiments, the at least one time gap is illustrated as a set of periodic time gaps, in some example embodiments, the at least one time gap may include a single time gap, or may include a set of aperiodic time gaps. These aperiodic time gaps may be with different time lengths or may be started at a set of certain time points. The configuration of the time gap may indicate the starting points of the set of time gaps and time lengths of the set of time gaps. The time gap may also be associated to the paging cycle and the corresponding paging occasions. For example, the time gap may be defined to occur when there is a paging occasion, such that the UE can monitor the paging occasion for PWS indication. In another example, the UE is informed to monitor the paging occasion without explicit signaling of a time gap. Embodiments of the present disclosure are not limited here.
[0087] It is to be understood that although a single first apparatus 110 and a single second apparatus 120 are illustrated in the signaling flow 200 and the following signaling flows, there may be one or more first apparatuses and / or one or more second apparatuses in some example embodiments. For example, the first apparatus 110 may receive the PWS message during the time gaps from one or more second apparatuses. The second apparatus 120 may transmit the configuration of the time gap to one or more first apparatuses. Scope of the present disclosure is not limited in this regard.
[0088] Several example embodiments regarding the PWS reception have been described. Further example embodiments will be described with respect to FIG. 3 to FIG. 4. As mentioned, in some example embodiments, the at least one time gap may include a first set of short periodic time gap. Such embodiments will be described with respect to FIG. 3, which illustrates another example signaling flow 300 for PWS message reception in accordance with some example embodiments of the present disclosure. The signaling flow 300 involves the first apparatus 110 and the second apparatus 120 in FIG. 1.
[0089] In operation, the first apparatus 110 may be in a connected mode such as RRC connected mode. That is, the first apparatus 110 may transmit (310) UL data to the second apparatus 120. The second apparatus 120 may transmit (315) DL data to the first apparatus 110. The UL data and / or DL data are user-specific data.
[0090] The second apparatus 120 transmits (320) , to the first apparatus 110, a configuration of at least one time gap such as short periodic Tx / Rx gap. The first apparatus 110 receives (325) the configuration correspondingly. The short periodic Tx / Rx gap may be configured via broadcasted signaling, for example, SIB31-NB that is the NB IoT SIB for accessing NTN, to allow the first apparatus 110 to stop (330) normal UL Tx / DL Rx to monitor the PWS indication. In this option, the short Tx / Rx gap needs to be configured by the second apparatus 120 regardless of whether there is PWS notification to be delivered or not as otherwise the first apparatus 110 such as a NB IoT UE may not stop the normal UL Tx / DL Rx to monitor the paging message due to the capability limitation of the NB IoT UE. Additionally, the information related to the common paging occasion (PO) related configuration such as paging cycle, UE ID used to calculate the PO or the like may be informed. Alternatively, the Tx / Rx gap may be configured as common paging occasion with sufficient repetition so that the relevant UEs are configured to monitor the paging during the configured common PO as the Tx / Rx gap of normal UL / DL transmission / reception. The configured Tx / Rx gap periodicity and / or common PO cycle may take into account the SI modification period and the delay requirement of PWS acquisition. For example, the Tx / Rx gap periodicity may be configured maximum 1 or 2 seconds considering the requirement of PWS notification delivery time is maximum 4 seconds. For another example, the configured Tx / Rx gap cycle may match the SI modification period in the way that the gap is configured in the specific radio frames that the SI change may happen.
[0091] Based on configured Tx / Rx gap and / or common PO, the relevant UEs are configured to pause or suspend the normal UL Tx / DL Rx and instead monitor the NDPCCH to check if there is NPDCCH addressed by PWS-RNTI or paging message to include the PWS indication. Herein, the relevant UEs refers to the NB IoT UEs that have capability limitation of monitoring NDPCCH CSS and USS simultaneously and are in RRC Connected state.
[0092] There may be several approaches of indicating the availability of PWS message as illustrated in FIG. 3. In a first approach, the second apparatus 120 may transmit (340) the PWS indication using DCI only mechanism over NPDCCH, which is addressed by PWS-RNTI. The PWS-RNTI may be defined or specified by standard specification (i.e. hard-coded) or may be configured by the NW together with Tx / Rx gap configuration via SIB. The first apparatus 110 may receive (345) the PWS indication over NPDCCH.
[0093] In another approach, the second apparatus 120 may transmit (350) the PWS indication using DCI and additionally the DCI including scheduling information of PWS message SIBs. The first apparatus 110 may thus receive (350) the PWS indication and the scheduling information.
[0094] In a further approach, the second apparatus 120 may transmit (360) the PWS indication in the paging message transmitted in the common PO configured by the second apparatus 120, in which the PWS indication may be explicitly indicated or implicitly indicated by including the scheduling information of PWS SIBs (e.g. the PWS SIB scheduling information as provided in SIB1) . The first apparatus 110 may receive (365) the PWS indication.
[0095] Upon receiving (345 / 355 / 365) the PWS indication (either via DCI or paging message) , the first apparatus 110 may be triggered to continue pausing / suspending the normal UL Tx / DL Rx and monitor (370) the relevant SIBs. For example, the first apparatus 110 may read the changed SIBs including SIB1 to get the scheduling information of PWS SIBs if it is not provided in PWS indication and / or read the PWS message related SIBs.
[0096] After successful reception of PWS message, the first apparatus 110 may be configured to switch (380) back to normal UL Tx / DL Rx mode autonomously to start monitoring the NPDCCH addressed by UE specific C-RNTI thus to resume the user-specific UL Tx / DL Rx. In this case, the second apparatus 120 may need to estimate the first apparatus 110 has completed the reception of PWS message e.g. based on PWS message segments and / or the certain number of PWS SIBs repetition and start schedule the first apparatus 110’s UL / DL transmissions. Alternatively, the first apparatus 110 may be configured to indicate to the second apparatus 120 the completion of PWS message reception, for example, using scheduling request mechanism. The indication of the completion of PWS message reception may trigger the second apparatus 120 to resume the scheduling of the first apparatus 110’s normal UL / DL transmission. When the normal UL / DL transmission is resumed after the gap, the first apparatus 110 may need to start over from beginning for DL repetition reception due to UE capability limitation, e.g. not be able to keep the soft bits of the received DL repetitions. For normal UL transmission, the first apparatus 110 may either start over from beginning of UL transmission repetitions or continue previous UL transmission repetitions depending on UE capability, e.g. whether the first apparatus 110 is capable to remember the number of repetitions that the first apparatus 110 has been transmitted before the Tx / Rx gap. In one further embodiment, the network indicates whether the first apparatus 110 may continue with the UL repetitions or start from the beginning.
[0097] As mentioned, in some example embodiments, the at least one time gap may include a second set of time gaps for receiving the PWS message. These embodiments will be described with respect to FIG. 4, which illustrates an example signaling flow 400 for PWS message reception in accordance with some example embodiments of the present disclosure. The signaling flow 400 involves the first apparatus 110 and the second apparatus 120 in FIG. 1.
[0098] In operation, the first apparatus 110 may be in a connected mode such as RRC connected mode. That is, the first apparatus 110 may transmit (410) UL data to the second apparatus 120. The second apparatus 120 may transmit (415) DL data to the first apparatus 110. The UL data and / or DL data are user-specific data.
[0099] In embodiments of FIG. 4, the Tx / Rx gap may be configured if the second apparatus 120 identifies (420) the need of delivering PWS message. The Tx / Rx gap may be configured dedicatedly to the relevant UEs using dedicated RRC signaling, such as RRC Reconfiguration message or using MAC signaling such as a new MAC CE defined for this purpose. In order for the second apparatus 120 to identify the relevant UEs, a new UE capability such as NB IoT UE supporting PWS notification reception in RRC Connected state may be introduced and indicated to the second apparatus 120 as part of UE capability. For example, the second apparatus 120 transmits (430) the TX / RX gap configuration of the (periodic) time gap to the first apparatus 110 via RRC or MAC signaling. The first apparatus 110 receives (435) the configuration.
[0100] Additionally, the TX / RX gap configuration message may also include the other information related to reading PWS related SIBs, e.g. the search space configuration for the NPDCCH monitoring during the gap, the scheduling information of PWS related SIBs, the segmentation related information, and / or multi-cell PWS message segment reception related configuration. The multi-cell PWS message segment reception related configuration may indicate whether the first apparatus 110 may delete the PWS message segments received from source cell upon reselect or handover to a new cell.
[0101] When the first apparatus receives (435) the Tx / Rx gap configuration for PWS message reception, the first apparatus 110 pauses (440) or suspends normal UL Tx / DL Rx during the configured gap and starts reading PWS related SIBs. As PWS related SIBs are transmitted periodically, the configured Tx / Rx gaps may also be configured periodically according to schedule of PWS related SIBs segments and repetitions. Between the periodic Tx / Rx gaps when the gap is configured to the first apparatus 110, the normal UL Tx / DL Rx may still be performed between the first apparatus 110 and the second apparatus 120. In this case, the normal DL Rx may be configured with the repetition that may be completed between two Tx / Rx gaps so that the first apparatus 110 doesn’t need to keep the soft bits of the previous transmission repetition. For normal UL Tx, the first apparatus 110 may be configured to continue the previous transmission repetition if the first apparatus 110 is capable to remember the number of repetitions that have been transmitted in the previous transmission before the Tx / Rx gap.
[0102] After successful reception of PWS notifications, the first apparatus 110 may be configured to switch (470) back to normal UL Tx / DL Rx mode autonomously by monitoring the NPDCCH addressed by UE specific C-RNTI. In this case, the second apparatus 120 may need to estimate the first apparatus 110 has completed the reception of PWS notification e.g. based on PWS notification segments and / or the certain number of PWS SIBs repetition and start schedule the UE’s UL / DL transmissions. Alternatively, the first apparatus 110 may indicate (450) to the second apparatus 120, the completion of PWS message reception. For example, the first apparatus 110 may use the opportunity of scheduled UL transmission by the second apparatus 120 out of the configured Tx / Rx gaps to send the indication of the completion of PWS message reception. Upon receiving (455) the indication of successfully receiving PWS notification, the second apparatus 120 may reconfigure (460) the first apparatus 110 to go back to normal transmission without the Tx / Rx gaps. The first apparatus 110 may receive (465) the reconfiguration.
[0103] Several example embodiments for PWS reception have been described. With these embodiments, the PWS message can be received by UEs even if the UEs are in RRC connected mode. With these embodiments, the first apparatus 110 such as the NB IoT UE is enabled to be triggered to acquire PWS notification while being kept in RRC Connected state, but without complicating the NB IoT UE implementation to support simultaneously NPDCCH CSS and USS monitoring.
[0104] It would be appreciated that some example specifications, signaling flows and embodiments are provided above, and the detailed description may be varied. It is to be understood that these signaling flows 200, 300 and / or 400 may be used separately, or in any suitable combinations. Some example embodiments, operations or features described with respect to one of these signaling flows 200, 300 and / or 400 may be applied to another of these signaling flows. Part of one of these signaling flows 200, 300 and / or 400 may be applied in combination with part of another signaling flow. It is to be understood that these signaling flows 200, 300 and / or 400 may involve any other suitable operations or signaling not shown.
[0105] FIG. 5 shows a flowchart of an example method 500 implemented at a first apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 500 will be described from the perspective of the first apparatus 110 in FIG. 1.
[0106] At block 510, the first apparatus 110 receives, from a second apparatus, a configuration of at least one time gap associated with a PWS message.
[0107] At block 520, during the at least one time gap, the first apparatus 110 stops user-specific data transfer and stops monitoring for scheduling of user-specific data transfer. In addition, during the at least one time gap, the first apparatus 110 receives at least one of: the PWS message, or an indication associated with the PWS message. The indication includes at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0108] In some example embodiments, the method 500 further comprises: monitoring the indication associated with the PWS message during the first set of periodic time gaps.
[0109] In some example embodiments, the method 500 further comprises: based on at least one condition being satisfied, monitoring the indication associated with the PWS message during the first set of periodic time gaps. The at least one condition comprises at least one of: the first apparatus being in a connected mode to the second apparatus, the first apparatus being without a capability of simultaneous monitoring of common search space and user-specific search space, or the first apparatus being with a PWS capability or interest.
[0110] In some example embodiments, the method 500 further comprises: in response to detecting the indication associated with the PWS message within a first time gap of the first set of periodic time gaps, stopping the user-specific data transfer and stopping monitoring for scheduling of the user-specific data transfer during a time duration after the first time gap; and receiving at least one segment of the PWS message during the time duration.
[0111] In some example embodiments, a length of the time duration is predefined, or configured by the second apparatus.
[0112] In some example embodiments, the first set of periodic time durations are based on at least one of: a common paging configuration, or a system information modification cycle.
[0113] In some example embodiments, the method 500 further comprises: receiving at least one segment of the PWS message during the second set of periodic time gaps.
[0114] In some example embodiments, the at least one segment of the PWS message may be received during the second set of periodic time gaps based on the scheduling information.
[0115] In some example embodiments, the method 500 further comprises: receiving first system information during the second set of periodic time gaps to obtain the scheduling information of the PWS message; and receiving the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.
[0116] In some example embodiments, the method 500 further comprises: in response to receiving at least one segment of the PWS message at a time point within a first time gap or within a time duration after the first time gap, performing at least one of: transmitting, to the second apparatus, an indication of the reception of the PWS message; continuing to perform the user-specific data transfer and monitoring for scheduling of user-specific data transfer after the time point; applying at least one remaining time gap after the first time gap for monitoring the PWS message or the message associated with the PWS message; or ending the at least one remaining time gap.
[0117] In some example embodiments, the method 500 further comprises: receiving, from the second apparatus, a triggering message for at least one of: continuing to perform the user-specific data transfer and monitoring for scheduling of user-specific data transfer; or applying or ending the at least one remaining time gap after the first time gap.
[0118] In some example embodiments, the triggering message indicates the first apparatus to: continue a previous transmission or reception repetition after receiving the PWS message, or perform a subsequent transmission or reception after receiving the PWS message.
[0119] In some example embodiments, the message associated with the PWS message comprises at least one of: DCI over a PDCCH addressed by a PWS-RNTI, the DCI including the indication of the PWS message, DCI including the indication of the PWS message and the scheduling information of the PWS message, a paging message received in a common paging occasion, a paging message scheduled with PWS-RNTI, or a paging message including a data part over narrowband physical downlink shared channel and the scheduling information of the PWS message.
[0120] In some example embodiments, the configuration of the at least one time gap comprises at least one of: a periodicity of the at least one time gap, a time length of the at least one time gap, information of at least one common paging occasion associated with the at least one time gap, an identifier of the first apparatus, the scheduling information of the PWS message, segmentation information of at least one segmentation of the PWS message, or a configuration of receiving segments of the PWS message from a plurality of cells.
[0121] In some example embodiments, the configuration of the at least one time gap is comprised in at least one of: system information, a radio resource control message, or medium access control control element.
[0122] In some example embodiments, the method 500 further comprises: transmitting, to the second apparatus, capability information of the first apparatus, the capability information comprising a support of PWS related information reception in a connected mode.
[0123] FIG. 6 shows a flowchart of an example method 600 implemented at a second apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 600 will be described from the perspective of the second apparatus 120 in FIG. 1.
[0124] At block 610, the second apparatus 120 transmits, to at least one first apparatus, a configuration of at least one time gap associated with a PWS message.
[0125] At block 620, during the at least one time gap, the second apparatus 120 transmits, to the at least one first apparatus, at least one of: the PWS message, or an indication associated with the PWS message. The indication associated with the PWS message includes at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0126] In some example embodiments, the method 600 further comprises: transmitting, to the at least one first apparatus, the indication associated with the PWS message during the first set of periodic time gaps.
[0127] In some example embodiments, the method 600 further comprises: broadcasting, to a plurality of first apparatuses, the configuration of the at least one time gap.
[0128] In some example embodiments, the method 600 further comprises: determining the first set of periodic time gaps based on at least one of: a common paging configuration of the at least one first apparatus, or a system information modification cycle.
[0129] In some example embodiments, the method 600 further comprises: transmitting at least one segment of the PWS message during the second set of periodic time gaps.
[0130] In some example embodiments, the method 600 further comprises: determining that the PWS message is to be transmitted to the at least one first apparatus in a connected mode; determining the second set of periodic time gaps based on the scheduling information of the PWS message; and transmitting the configuration of the second set of periodic time gaps to the at least one first apparatus.
[0131] In some example embodiments, the method 600 further comprises: transmitting, to the at least one first apparatus, the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.
[0132] In some example embodiments, the method 600 further comprises: transmitting, to the at least one first apparatus, first system information during the second set of periodic time gaps, the first system information indicating the scheduling information of the PWS message; and transmitting, to the at least one first apparatus, the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.
[0133] In some example embodiments, the method 600 further comprises: receiving, from the at least one first apparatus, an indication of a reception of the PWS message; and transmitting, to the at least one first apparatus, a triggering message indicating the at least one first apparatus to perform at least one of: applying at least one remaining time gap after the reception of the PWS message for monitoring the PWS message or the indication associated with the PWS message; ending at least one remaining time gap; continuing a previous transmission or reception repetition after receiving the PWS message, or performing a subsequent transmission or reception after receiving the PWS message.
[0134] In some example embodiments, the method 600 further comprises: in response to at least one remaining segment of the PWS message being to be transmitted to the at least one first apparatus, transmitting the triggering message to the at least one first apparatus indicating to applying the at least one remaining time gap; and in response to no remaining segment of the PWS message being to be transmitted to the at least one first apparatus, transmitting the triggering message to the at least one first apparatus indicating to end the at least one remaining time gap.
[0135] In some example embodiments, the method 600 further comprises: receiving, from the at least one apparatus, capability information of the at least one first apparatus, the capability information comprising a support of PWS related information reception in a connected mode.
[0136] In some example embodiments, a first apparatus capable of performing any of the method 500 (for example, the first apparatus 110 in FIG. 1) may comprise means for performing the respective operations of the method 500. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module. The first apparatus may be implemented as or included in the first apparatus 110 in FIG. 1.
[0137] In some example embodiments, the first apparatus comprises means for receiving, from a second apparatus, a configuration of at least one time gap associated with a PWS message; and means for during the at least one time gap, stopping user-specific data transfer and stopping monitoring for scheduling of user-specific data transfer; and means for during the at least one time gap, receiving at least one of: the PWS message, or an indication associated with the PWS message, the indication comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0138] In some example embodiments, a second apparatus capable of performing any of the method 600 (for example, the second apparatus 120 in FIG. 1) may comprise means for performing the respective operations of the method 600. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module. The second apparatus may be implemented as or included in the second apparatus 120 in FIG. 1.
[0139] In some example embodiments, the second apparatus comprises means for transmitting, to at least one first apparatus, a configuration of at least one time gap associated with a PWS message; and means for during the at least one time gap, transmitting, to the at least one first apparatus, at least one of: the PWS message, or an indication associated with the PWS message, the indication associated with the PWS message comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.
[0140] FIG. 7 is a simplified block diagram of a device 700 that is suitable for implementing example embodiments of the present disclosure. The device 700 may be provided to implement a communication device, for example, the first apparatus 110 or the second apparatus 120 as shown in FIG. 1. As shown, the device 700 includes one or more processors 710, one or more memories 720 coupled to the processor 710, and one or more communication modules 740 coupled to the processor 710.
[0141] The communication module 740 is for bidirectional communications. The communication module 740 has one or more communication interfaces to facilitate communication with one or more other modules or devices. The communication interfaces may represent any interface that is necessary for communication with other network elements. In some example embodiments, the communication module 740 may include at least one antenna.
[0142] The processor 710 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 700 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.
[0143] The memory 720 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) 724, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , an optical disk, a laser disk, and other magnetic storage and / or optical storage. Examples of the volatile memories include, but are not limited to, a random-access memory (RAM) 722 and other volatile memories that will not last in the power-down duration.
[0144] A computer program 730 includes computer executable instructions that are executed by the associated processor 710. The instructions of the program 730 may include instructions for performing operations / acts of some example embodiments of the present disclosure. The program 730 may be stored in the memory, e.g., the ROM 724. The processor 710 may perform any suitable actions and processing by loading the program 730 into the RAM 722.
[0145] The example embodiments of the present disclosure may be implemented by means of the program 730 so that the device 700 may perform any process of the disclosure as discussed with reference to FIG. 2 to FIG. 6. The example embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
[0146] In some example embodiments, the program 730 may be tangibly contained in a computer readable medium which may be included in the device 700 (such as in the memory 720) or other storage devices that are accessible by the device 700. The device 700 may load the program 730 from the computer readable medium to the RAM 722 for execution. In some example embodiments, the computer readable medium may include any types of non-transitory storage medium, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like. 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) .
[0147] FIG. 8 shows an example of the computer readable medium 800 which may be in form of CD, DVD or other optical storage disk. The computer readable medium 800 has the program 730 stored thereon.
[0148] 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, and other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. Although 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.
[0149] Some example embodiments of the present disclosure also provide at least one computer program product tangibly stored on a computer readable medium, such as a non-transitory computer readable medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target physical or virtual processor, to carry out any of the methods as described above. 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.
[0150] Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. The program code 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 code, 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.
[0151] In the context of the present disclosure, the computer program code 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.
[0152] 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.
[0153] Further, although 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, although 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. Unless explicitly stated, certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, unless explicitly stated, various features that are described in the context of a single embodiment may also be implemented in a plurality of embodiments separately or in any suitable sub-combination.
[0154] 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 first apparatus comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus to:receive, from a second apparatus, a configuration of at least one time gap associated with a public warning system (PWS) message; andduring the at least one time gap,stop user-specific data transfer and stop monitoring for scheduling of user-specific data transfer; andreceive at least one of: the PWS message, or an indication associated with the PWS message, the indication comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.2.The first apparatus of claim 1, wherein the at least one time gap comprises a first set of periodic time gaps, and the first apparatus is further caused to:monitor the indication associated with the PWS message during the first set of periodic time gaps.3.The first apparatus of claim 2, wherein the first apparatus is further caused to:based on at least one condition being satisfied, monitor the indication associated with the PWS message during the first set of periodic time gaps,wherein the at least one condition comprises at least one of:the first apparatus being in a connected mode to the second apparatus,the first apparatus being without a capability of simultaneous monitoring of common search space and user-specific search space, orthe first apparatus being with a PWS capability or interest.4.The first apparatus of claim 2 or 3, wherein the first apparatus is further caused to:in response to detecting the indication associated with the PWS message within a first time gap of the first set of periodic time gaps, stop the user-specific data transfer and stop monitoring for scheduling of the user-specific data transfer during a time duration after the first time gap; andreceive at least one segment of the PWS message during the time duration.5.The first apparatus of any of claims 2-4, wherein the first set of periodic time durations are based on at least one of: a common paging configuration, or a system information modification cycle.6.The first apparatus of any of claims 1-5, wherein the at least one time gap comprises a second set of periodic time gaps, and the first apparatus is further caused to:receive at least one segment of the PWS message during the second set of periodic time gaps.7.The first apparatus of claim 6, wherein the configuration of the at least one time gap further comprises the scheduling information of the PWS message, and the first apparatus is further caused to:receive the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.8.The first apparatus of claim 6, wherein the first apparatus is further caused to:receive first system information during the second set of periodic time gaps to obtain the scheduling information of the PWS message; andreceive the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.9.The first apparatus of any of claims 1-8, wherein the first apparatus is further caused to:in response to receiving at least one segment of the PWS message at a time point within a first time gap or within a time duration after the first time gap, perform at least one of:transmitting, to the second apparatus, an indication of the reception of the PWS message;continuing to perform the user-specific data transfer and monitoring for scheduling of user-specific data transfer after the time point;applying at least one remaining time gap after the first time gap for monitoring the PWS message or the message associated with the PWS message; orending the at least one remaining time gap.10.The first apparatus of claim 9, wherein the first apparatus is further caused to:receive, from the second apparatus, a triggering message for at least one of:continuing to perform the user-specific data transfer and monitoring for scheduling of user-specific data transfer; orapplying or ending the at least one remaining time gap after the first time gap.11.The first apparatus of claim 10, wherein the triggering message indicates the first apparatus to:continue a previous transmission or reception repetition after receiving the PWS message; orperform a subsequent transmission or reception after receiving the PWS message.12.The first apparatus of any of claims 1-111, wherein the indication associated with the PWS message comprises at least one of:downlink control information (DCI) over a physical downlink control channel (PDCCH) addressed by a PWS radio network temporary identifier (PWS-RNTI) , the DCI including the indication of the PWS message,DCI including the indication of the PWS message and the scheduling information of the PWS message,a paging message received in a common paging occasion,a paging message scheduled with PWS-RNTI, ora paging message including a data part over narrowband physical downlink shared channel and the scheduling information of the PWS message.13.The first apparatus of any of claims 1-12, wherein the configuration of the at least one time gap comprises at least one of:a periodicity of the at least one time gap,a time length of the at least one time gap,information of at least one common paging occasion associated with the at least one time gap,an identifier of the first apparatus,the scheduling information of the PWS message,segmentation information of at least one segment of the PWS message, ora configuration of receiving segments of the PWS message from a plurality of cells.14.The first apparatus of any of claims 1-13, wherein the configuration of the at least one time gap is comprised in at least one of: system information, a radio resource control message, or medium access control control element.15.The first apparatus of any of claims 1-14, wherein the first apparatus is further caused to:transmit, to the second apparatus, capability information of the first apparatus, the capability information comprising a support of PWS related information reception in a connected mode.16.A second apparatus comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the second apparatus to:transmit, to at least one first apparatus, a configuration of at least one time gap associated with a public warning system (PWS) message; andduring the at least one time gap, transmit, to the at least one first apparatus, at least one of: the PWS message, or an indication associated with the PWS message, the indication associated with the PWS message comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.17.The second apparatus of claim 16, wherein the at least one time gap comprises a first set of periodic time gaps, and the second apparatus is further caused to:transmit, to the at least one first apparatus, the indication associated with the PWS message during the first set of periodic time gaps.18.The second apparatus of claim 17, wherein the second apparatus is further caused to:broadcast, to a plurality of first apparatuses, the configuration of the at least one time gap.19.The second apparatus of claim 17 or 18, wherein the second apparatus is further caused to:determine the first set of periodic time gaps based on at least one of: a common paging configuration of the at least one first apparatus, or a system information modification cycle.20.The second apparatus of claim 16, wherein the at least one time gap comprises a second set of periodic time gaps, and the second apparatus is further caused to:transmit at least one segment of the PWS message during the second set of periodic time gaps.21.The second apparatus of claim 20, wherein the second apparatus is further caused to:determine that the PWS message is to be transmitted to the at least one first apparatus in a connected mode;determine the second set of periodic time gaps based on the scheduling information of the PWS message; andtransmit the configuration of the second set of periodic time gaps to the at least one first apparatus.22.The second apparatus of claim 20 or 21, wherein the configuration of the at least one time gap further comprises the scheduling information of the PWS message, and the second apparatus is further caused to:transmit, to the at least one first apparatus, the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.23.The second apparatus of claim 20 or 21, wherein the second apparatus is further caused to:transmit, to the at least one first apparatus, first system information during the second set of periodic time gaps, the first system information indicating the scheduling information of the PWS message; andtransmit, to the at least one first apparatus, the at least one segment of the PWS message during the second set of periodic time gaps based on the scheduling information.24.The second apparatus of any of claims 16-23, wherein the second apparatus is further caused to:receive, from the at least one first apparatus, an indication of a reception of the PWS message; andtransmit, to the at least one first apparatus, a triggering message indicating the at least one first apparatus to perform at least one of:applying at least one remaining time gap after the reception of the PWS message for monitoring the PWS message or the indication associated with the PWS message;ending at least one remaining time gap;continuing a previous transmission or reception repetition after receiving the PWS message, orperforming a subsequent transmission or reception after receiving the PWS message.25.The second apparatus of claim 24, wherein the second apparatus is further caused to:in response to at least one remaining segment of the PWS message being to be transmitted to the at least one first apparatus, transmit the triggering message to the at least one first apparatus indicating to applying the at least one remaining time gap; andin response to no remaining segment of the PWS message being to be transmitted to the at least one first apparatus, transmit the triggering message to the at least one first apparatus indicating to end the at least one remaining time gap.26.A method comprising:receiving, at a first apparatus from a second apparatus, a configuration of at least one time gap associated with a PWS message; andduring the at least one time gap,stopping user-specific data transfer and stopping monitoring for scheduling of user-specific data transfer; andreceiving at least one of: the PWS message, or an indication associated with the PWS message, the indication comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.27.A method comprising:transmitting, at a second apparatus to at least one first apparatus, a configuration of at least one time gap associated with a PWS message; andduring the at least one time gap, transmitting, to the at least one first apparatus, at least one of: the PWS message, or an indication associated with the PWS message, the indication associated with the PWS message comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.28.A first apparatus comprising:means for receiving, from a second apparatus, a configuration of at least one time gap associated with a PWS message; andmeans for during the at least one time gap, stopping user-specific data transfer and stopping monitoring for scheduling of user-specific data transfer; andmeans for during the at least one time gap, receiving at least one of: the PWS message, or an indication associated with the PWS message, the indication comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.29.A second apparatus comprising:means for transmitting, to at least one first apparatus, a configuration of at least one time gap associated with a PWS message; andmeans for during the at least one time gap, transmitting, to the at least one first apparatus, at least one of: the PWS message, or an indication associated with the PWS message, the indication associated with the PWS message comprising at least one of: information indicative of the PWS message, or scheduling information of the PWS message.30.A computer readable medium comprising instructions stored thereon for causing an apparatus at least to perform the method of claim 26 or claim 27.