Broadcast service delivery enhancements

Abstract

Methods, apparatuses, and systems are described that relate to wireless communication. A wireless device performs a method of wireless communication that includes receiving, by the wireless device from a network device, assistance information related to a broadcast service, and making, by the wireless device, a decision regarding the broadcast service based on the assistance information.

Description

Technical Field

[0001] This patent document generally relates to wireless communication. Background Technology

[0002] Wireless communication technology is leading the world towards an increasingly connected and networked society. The rapid development and technological advancements in wireless communication have resulted in greater demands for capacity and connectivity. Other factors, such as energy consumption, equipment cost, spectrum efficiency, and latency, are also important for meeting the needs of various communication scenarios. Compared to existing wireless networks, next-generation systems and wireless communication technologies need to support a growing number of users and devices, and to support an increasingly mobile society. Summary of the Invention

[0003] A variety of technologies are disclosed that can be implemented by embodiments of mobile communication technologies, including fifth-generation (5G), new radio (NR), and other wireless networks.

[0004] In one example aspect, a wireless communication method is disclosed. The method includes: receiving auxiliary information related to a broadcast service from a network device by a wireless device; and making a decision about the broadcast service by the wireless device based on the auxiliary information.

[0005] In another example, a different wireless communication method is disclosed. This method includes transmitting auxiliary information related to a broadcast service from a network device to a wireless device, wherein the auxiliary information allows the wireless device to make decisions regarding the broadcast service.

[0006] In one example aspect, a wireless communication method is disclosed. The method includes: transmitting a capability indication from a wireless device to a network device, the capability indication indicating whether the wireless device has the capability to use auxiliary information related to a broadcast service, wherein the auxiliary information allows the wireless device to make decisions regarding the broadcast service.

[0007] In another example aspect, a different wireless communication method is disclosed. The method includes: receiving, by a network device, a capability indication from a wireless device, the capability indication indicating whether the wireless device has the capability to use auxiliary information related to a broadcast service, the auxiliary information allowing the wireless device to make decisions regarding the broadcast service; and selectively transmitting the auxiliary information to the wireless device based on the wireless device's indication that it has the capability to use the auxiliary information related to the broadcast service.

[0008] In yet another exemplary aspect, the above method is embodied in the form of a computer-readable medium storing processor-executable code for implementing the method.

[0009] In yet another exemplary embodiment, an apparatus configured or operable to perform the methods described above is disclosed. The apparatus includes at least one processor configured to implement the methods described above.

[0010] The above and other aspects and their embodiments will be described in more detail in the accompanying drawings, specification and claims. Attached Figure Description

[0011] Figure 1 This is a block diagram example of a wireless communication system.

[0012] Figure 2 This is a flowchart of an example method for wireless communication.

[0013] Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The various processes related to the use of auxiliary information in a wireless system are illustrated.

[0014] Figure 8 , Figure 9 , Figure 10 and Figure 11 Flowcharts depicting various examples of wireless communication methods are provided.

[0015] In the accompanying diagram depicting the message exchange, dashed lines represent optional messages, such as messages that may be transmitted only if certain preconditions are met. Detailed Implementation

[0016] The section headings in this document are for readability purposes only and do not limit the scope of the embodiments and techniques disclosed in each section to that section. Certain features are described using examples of 3GPP and fifth-generation (5G) radio protocol terminology. However, the applicability of the disclosed techniques is not limited to 5G radio systems. Furthermore, in this patent document, the separator “ / ” is used to indicate that the listed options are alternatives to the conjunction “or”. Additionally, various information elements (IEs) examples disclosed herein include fields marked OPTIONAL, meaning that these fields can be optionally implemented by embodiments using a nomenclature similar to that of the 3GPP protocol.

[0017] The following abbreviations are used in this document.

[0018]

[0019] 1. Introduction

[0020] Current wireless communication systems support paging from NW to UE within one or more tracking areas / cells, as well as PWS from NW to UE within SIB. In NR, paging messages can be scheduled with or without a short message. The short message includes an indication of whether a warning message for ETWS primary notification / ETWS secondary notification / CMAS notification has been scheduled.

[0021] If the UE receives a DCI including a short message, and if the short message indicates that at least one warning message is scheduled, then if the UE supports receiving the corresponding warning message, the UE will acquire one or more SIBs to obtain the scheduled warning message.

[0022] In NR, paging messages can be dispatched with or without an indication of ETWS or CMAS.

[0023] If the UE receives a paging message that includes an ETWS indication, and the ETWS indication indicates that an ETWS primary notification and / or ETWS secondary notification warning message is scheduled, then if the UE supports ETWS, the UE will obtain the corresponding system information to obtain the scheduled ETWS warning message.

[0024] If the UE receives a paging message that includes a CMAS indication, and the CMAS indication indicates that a CMAS warning message has been scheduled, then if the UE supports CMAS, the UE will obtain the corresponding system information to obtain the scheduled CMAS warning message.

[0025] When a UE receives a DCI message indicating a list of paging records, the UE can receive and decode the paging message to check whether the paging records included in the paging message are for the UE. In some examples, when the UE identifier included in the paging record matches the UE's UE identifier, the UE may consider the paging record to be for itself. When the UE determines that the paging record is for it, the UE can take the action indicated by the paging record, such as initiating an RRC establishment procedure.

[0026] In some examples, a technique called PEI is introduced to allow for further power savings. If a UE detects a PEI and the PEI instructs its subgroup to monitor its associated PO, then the UE monitors the associated PO. If the UE does not detect a PEI at the time of the PEI monitoring, or if the PEI does not instruct its subgroup to monitor its associated PO, then the UE does not need to monitor the associated PO.

[0027] Because NTN cells cover a larger area (compared to conventional terrestrial cells), broadcast services and paging provided within an NTN cell may only be available for a portion of the area covered by that NTN cell (e.g., only for certain countries). With the introduction of broadcast assistance information, when the UE's location is outside the service area derived from this information, the UE can avoid receiving / decoding broadcast messages, allowing for further power savings at the UE. In this patent document, the broadcast message can be at least one of the following: a warning message provided by a Public Warning System (PWS) (e.g., a warning message from an ETWS primary notification, a warning message from an ETWS secondary notification), a warning message from a CMAS notification, or a paging message.

[0028] In PCT / CN2024 / 080937 (the “prior application”) filed on March 19, 2024, the entire contents of which are incorporated herein by reference, we disclose the management of multicast / broadcast services using auxiliary information.

[0029] In the prior application, the auxiliary information was associated with and used for MBS service management, while in this application, the auxiliary information is used for paging management, short messages, and SIBs carrying PWS information. In some embodiments disclosed in this application, the provided auxiliary information related to the broadcast area is mapped to PWS warning messages or paging messages;

[0030] Furthermore, this auxiliary information can be processed by the UE in different ways. In some embodiments, an enable indication is introduced to enable the use of auxiliary information upon receipt of a warning message or paging message for PWS. In some embodiments, when the DCI indicates that a short message is scheduled, the UE uses this information to determine whether to further receive the SIB carrying the PWS warning message indicated in the received short message. In some embodiments, when the DCI indicates that a paging message is scheduled, the UE uses this information to determine whether to further receive and decode the paging message. In the prior application, the auxiliary information was based on service area information provided by the MBS service provider, while in some embodiments disclosed in this document, the auxiliary information can come directly from the CN. In some examples, the auxiliary information comes from the CBC of the CN.

[0031] 2. Example Wireless System and Hardware Platform

[0032] Figure 1An example of a wireless communication system (e.g., a Long Term Evolution (LTE), 5G, or NR cellular network) is illustrated, comprising network equipment such as base station BS 120 and one or more wireless devices or user equipment (UEs) 111, 112, and 113. In some embodiments, uplink transmissions (131, 132, 133) may include uplink control information (UCI), higher-layer signaling (e.g., radio link layer messages), or uplink information. In some embodiments, downlink transmissions (141, 142, 143) may include DCI, reference signal configuration, reference signal transmission, or higher-layer signaling or other downlink information. The UE may be, for example, a smartphone, tablet, mobile computer, machine-to-machine (M2M) device, terminal, mobile device, Internet of Things (IoT) device, etc. The disclosed techniques may be implemented by UEs 111, 112, and / or 113 or base station 120.

[0033] Figure 2 This is a block diagram representation of a portion of an apparatus according to some embodiments of the present disclosure. Apparatus 205, such as a network device, base station, or wireless device (or UE), may include processor electronics 210, such as at least one processor or microprocessor, which implements one or more technologies proposed in this document. Apparatus 205 may include transceiver electronics 215 for transmitting and / or receiving wireless signals via one or more communication interfaces, such as antenna 220. Apparatus 205 may include other communication interfaces for transmitting and receiving data. Apparatus 205 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some embodiments, processor electronics 210 may include at least a portion of transceiver electronics 215. In some embodiments, apparatus 205 is used to implement at least some of the disclosed technologies, modules, or functions. Transceiver electronics 215 may be used, under the control of processor electronics 210, to transmit or receive various signals described in this document.

[0034] 3. General Process

[0035] To address the aforementioned technical and other issues, an enhanced method for delivering and receiving broadcast and paging services can be introduced, comprising at least one of the following steps:

[0036] Step 1: The UE receives auxiliary information associated with broadcast messages or paging from the NW.

[0037] Step 2: The UE determines whether to receive the broadcast message or paging based on the received auxiliary information.

[0038] Here, NW can be at least one of CN, base station (NG-RAN, eNB, 6G base station), and functional entity (e.g., CBC, CBE, OAM, AMF, etc.).

[0039] The steps described above are only high-level procedures. Additional steps may be required for different implementation examples, which will be discussed in later sections of this document.

[0040] Furthermore, although the solution discussed focuses on the technical issues raised in NTN, it can also be used in other networks besides NTN (NR NTN / IoT NTN), such as TN, ATG, etc.

[0041] The broadcast services / messages discussed in this document may include at least one of PWS alert messages (e.g., ETWS primary notifications / ETWS secondary notifications / CMAS notifications), MBS messages, or paging messages.

[0042] The broadcast support information may include at least information relating to the broadcast service area (which may also be referred to using the terms expected / target / permitted service area), satellite information, or information for associating the broadcast service area with the broadcast message, and the broadcast support information includes at least one of the following:

[0043] An indication used to instruct the UE whether to consider auxiliary information when receiving a broadcast message. The broadcast message may include at least one of a PWS warning message (e.g., an ETWS / CMAS message), an MBS message, or a paging message. In one example, a separate indication may be introduced for each type of message discussed above, such as an indication for ETWS messages, an indication for CMAS messages, an indication for PWS warning messages, an indication for broadcast messages for MBS services, an indication for multicast messages for MBS services, and an indication for paging, wherein at least some of these indications are independent, different, or distinct from each other. In another example, there may be a common indication for all types of PWS warning messages, a common indication for all types of MBS services, or an indication for paging messages. In yet another example, a common indication may be used for one or more types of broadcast messages discussed above. For the indications discussed above, at least one of the following implementation options may be adopted:

[0044] Option 1: The indication can be a one-bit indication with a value of 1 or 0, where 0 indicates that the auxiliary information is not considered for the broadcast message, while 1 indicates that the auxiliary information is considered for the broadcast message, and vice versa.

[0045] Option 2: The presence of this indication can be used as a positive indication, suggesting that the auxiliary information is considered for the broadcast message, while the absence of this indication indicates...

[0046] Option 3: A bit string, where each bit corresponds to a type of broadcast message. This broadcast message type may include at least one of a PWS warning message (e.g., ETWS primary notification / ETWS secondary notification / CMAS notification), an MBS message, or a paging message. The implementation of each bit may follow the examples discussed in Option 1.

[0047] Option 4: In some examples, the presence of auxiliary information can be seen as an implicit indication that the UE will consider the auxiliary information when receiving broadcast messages.

[0048] In some examples, a combination of some or all of the above options may be considered. For example, when auxiliary information for a broadcast message is transmitted from the NW to the UE via a different message carrying the broadcast message (e.g., in the DCI, or in a new SIB dedicated to providing auxiliary information), an explicit indication is used to inform the UE to receive the auxiliary information before receiving the broadcast message. When auxiliary information is transmitted as part of a broadcast message, no explicit indication is required; instead, the UE relies on the presence of the auxiliary information in the message to decide whether to consider it when decoding the broadcast message. If the auxiliary information is not included, or if the UE's location is within the service area associated with the broadcast message: the UE continues decoding the rest of the message (if any) and performs necessary actions (e.g., triggering an alarm) in response to the received broadcast message. If the UE's location is outside the service area associated with the broadcast message: the UE may avoid decoding the rest of the message (if any) and may avoid performing necessary actions (e.g., triggering an alarm) in response to the received broadcast message.

[0049] When the indication (whether based on an explicit indication or the presence of auxiliary information) suggests that the auxiliary information is being considered for broadcast messages, the UE may perform at least one of the following actions:

[0050] Based on the auxiliary information associated with the broadcast message, the service area of ​​the broadcast message is deduced;

[0051] Determine whether the UE's location is within the service area of ​​the broadcast message;

[0052] When the UE's location is outside the service area associated with the broadcast message, it is decided not to monitor / receive the broadcast message.

[0053] When the UE's location is outside the service area associated with the received broadcast message, it is decided not to take any action (e.g., actions such as popping up content in the user interface or triggering an alarm).

[0054] In some examples, when no UE location information is available on the UE side, the UE continues to receive the broadcast message regardless of whether auxiliary information is considered when receiving the broadcast message.

[0055] The instruction may be included in the same message carrying auxiliary information, as discussed below, or may be included in a separate signaling message carrying auxiliary information. The instruction may be included in at least one of the following: DCI, Paging Advance Instruction (PEI), Short Message, Media Access Control Element (MAC CE), System Information, RRC message, or Non-Access Stratum (NAS) message.

[0056] A mapping between auxiliary information and broadcast messages, used to allow the UE to know which broadcast message or broadcast service the auxiliary information is used for. For example, if auxiliary information 1 is associated with an ETWS notification and auxiliary information 2 is associated with a CMAS notification, then the UE can use auxiliary information 2 when receiving a CMAS notification and can use auxiliary information 1 when receiving an ETWS notification. The mapping rule can be at least one of the following:

[0057] Each broadcast auxiliary message can be mapped to one or more broadcast messages.

[0058] Each broadcast message can be mapped to one or more broadcast auxiliary messages.

[0059] Each broadcast message type can be mapped to one or more broadcast auxiliary messages. In some examples, each broadcast message of a broadcast message type can be mapped to one or more broadcast auxiliary messages.

[0060] Each broadcast auxiliary message can be mapped to one or more broadcast message types. In some examples, each broadcast auxiliary message can be mapped to one or more broadcast messages of each broadcast message type.

[0061] For the mapping rules described above, in some examples, mapping can be accomplished by including one or more broadcast identifiers of a broadcast message in the auxiliary information, where each identifier indicates a broadcast message (e.g., a message identifier and / or sequence number). The sequence number is used to indicate the version of the broadcast message. In some examples, mapping can be accomplished by including one or more broadcast service types in the auxiliary information. In some examples, mapping can be accomplished by including one or more auxiliary information identifiers for a broadcast message, where each auxiliary information identifier identifies an auxiliary piece of information. In some examples, mapping can be accomplished by including one or more auxiliary information identifiers for a broadcast service type, where each auxiliary information identifier identifies an auxiliary piece of information. The auxiliary information identifier can be at least one of the identifiers discussed in this document for the content of auxiliary information (e.g., identifiers for identifying a country, identifiers for identifying a geographical region, identifiers for identifying a tracking area, etc.).

[0062] Broadcast message types can be at least one of the following: ETWS primary notification, ETWS secondary notification, CMAS notification, paging, or MBS service (which can be broadcast and / or multicast).

[0063] Broadcast auxiliary information may include service area information to indicate the service area of ​​a broadcast message or service. Service area information includes at least one of the following: country information, tracking area information, geographic coverage information, TN cell information, satellite information, or timing information. Details will be discussed in the following sections and throughout this document.

[0064] The type field is used to indicate one or more broadcast service types for which the auxiliary information can be used. Broadcast message types may include at least one of the following: PWS warning messages (e.g., ETWS primary notifications / ETWS secondary notifications / CMAS notifications), MBS services (e.g., broadcast services or multicast services), or paging messages.

[0065] In some examples, it can include multiple values, each indicating a broadcast message type. For example, one value might be used for PWS alert messages, one for MBS services, or one for paging messages. In some examples, a single value might be used to further differentiate alert message types; for example, one value might indicate ETWS primary notifications, one for ETWS secondary notifications, or one for CMAS notifications. In some examples, a single value might be used to further differentiate MBS service types; for example, one value might indicate MBS broadcast services, and one value might indicate MBS multicast services.

[0066] In some examples, it can include multiple bits (e.g., a bit string or individual bits), where each bit corresponds to a broadcast message / service type. In some examples, the bit is set to one value (e.g., 1) to indicate that the auxiliary information is used for the corresponding broadcast service type; the bit is set to another value (e.g., 0) to indicate that the auxiliary information is not used for the corresponding broadcast service type, or vice versa. Alternatively, in some examples, the presence of the bit indicates that the auxiliary information is used for the corresponding broadcast service type, otherwise the bit is not present.

[0067] Country information, which indicates one or more countries that provide / intend to provide the broadcast service. In some examples, the country information can include at least one of the following:

[0068] Country code / country abbreviation / country identifier. Each country code / abbreviation / country identifier is used to uniquely identify a country. An example could be the Mobile Country Code (MCC) specified in the 3GPP standard.

[0069] A mapping between national information and broadcasting services, which includes at least one of the following:

[0070] Each country can be mapped to one or more broadcast messages. For example, a country identified by a country code / country identifier / country abbreviation can be associated with one or more broadcast messages identified by a message identifier. The broadcast message identifier can be at least one of the following: a message identifier defined to identify the source and type of a warning message, or a paging record defined to identify paging information.

[0071] One or more countries can be mapped to a broadcast message. For example, a broadcast message identified by a message identifier can be associated with one or more countries identified by a country code / country identifier / country abbreviation. The broadcast message identifier can be at least one of the following: a message identifier defined to identify the source and type of a warning message, or a paging record defined to identify paging information.

[0072] Tracking area information, which indicates one or more tracking areas that provide / are expected to provide the broadcast service. In some examples, country information can include at least one of the following:

[0073] An identifier used to identify the tracking area. This identifier can be at least one of a Tracking Area Code (TAC) or a Tracking Area Identifier (TAI). The TAI can consist of TAC and PLMN identification information.

[0074] The mapping relationship between TA information and broadcast services includes at least one of the following:

[0075] Each TA can be mapped to one or more broadcast messages. For example, a TA can be associated with one or more broadcast messages identified by a message identifier.

[0076] One or more TAs can be mapped to a broadcast message. For example, a broadcast message identified by a message identifier can be associated with one or more TAs.

[0077] Geographic coverage information, which indicates one or more geographic coverage areas that provide / are expected to provide the broadcast service. In some examples, country information can include at least one of the following:

[0078] An identifier used to identify geographic coverage. This identifier may include at least one of the following: a TN identifier broadcast in SIB25 that identifies a TN area, or another defined geographic coverage identifier used to identify geographic coverage.

[0079] A mapping between geographic coverage information and broadcast services, which includes at least one of the following:

[0080] Each geographic coverage area can be mapped to one or more broadcast messages. For example, a geographic coverage area can be associated with one or more broadcast messages identified by a message identifier.

[0081] One or more geographic coverage areas can be mapped to a broadcast message. For example, a broadcast message identified by a message identifier can be associated with one or more geographic coverage areas.

[0082] TN cell information can include at least one of a TN cell identifier and a mapping between the TN cell identifier and a broadcast service. The use of the TN cell identifier can be similar to its use in determining geographic coverage, except that the UE infers the geographic area of ​​the broadcast service from the TN cell coverage associated with the cell identified by the TN cell identifier. The remaining features are the same as those used to determine geographic area information. In this option, the geographic area of ​​each broadcast message is equal to the total coverage of each coverage area of ​​each TN cell associated with that broadcast message. In some examples, the provided TN cell is only used to infer the geographic coverage of the broadcast message and does not necessarily indicate that the broadcast message is available in that TN cell.

[0083] Satellite information, which indicates information about the satellites serving the UE, may include at least one of the following:

[0084] Satellite identifiers, wherein each satellite identifier identifies a satellite and / or a set of satellite information. This set of information may include at least one of the following: satellite ephemeris, satellite epoch time, common TA parameters, and polarization parameters.

[0085] Satellite ephemeris and associated epoch times

[0086] Public TA parameters and associated epoch times

[0087] NTN types include NGSO, GSO, GEO, LEO, MEO, Earth Moving, Earth Fixed, and Quasi-Earth Fixed.

[0088] Time information associated with broadcast auxiliary information, which includes at least one of the following:

[0089] The start time, which includes the time when the broadcast auxiliary information becomes effective, can be implemented based on at least one of the following options:

[0090] In one example, the start time can be a past, present, or future time. In some examples, when an epoch time is provided, the start time can be the time indicated by the epoch time.

[0091] The start time is the time offset from the epoch time, which can be at least a positive or negative value. In this example, the broadcast auxiliary information becomes valid at the epoch time plus the time offset. In another example, the broadcast auxiliary information becomes valid at the epoch time minus the time offset.

[0092] Duration, which indicates the length of time during which the broadcast supplementary information is considered valid. The start timing for calculating this duration can be at least one of the start times discussed above.

[0093] For all broadcast messages discussed above, it can include at least one of PWS warning messages (e.g., ETWS / CMAS messages), MBS messages, or paging messages. In some examples, each broadcast message can be identified by an identifier that can include at least one of the following: a message identifier defined to identify the source and type of a warning message, or a paging record defined to identify paging information.

[0094] For the broadcast auxiliary information discussed in this document, at least one of the following methods can be considered to provide auxiliary information from the NW to the UE: system information, downlink control information, short messages, RRC messages (e.g., RRC reconfiguration, RRC release, RRC recovery messages, etc.), NAS messages, paging messages, short messages, MAC CE, etc.

[0095] The following provides further details on some implementation examples of how this auxiliary information can be used for broadcast / paging message delivery and reception. Although described as different embodiments to highlight certain aspects, the use of features, message syntax, and fields in one embodiment may also be used in another embodiment.

[0096] 4. Example Implementation 1: Enable indication in SIB1, auxiliary information in SIB for warning messages

[0097] In the first embodiment, the enable indication is included in SIB1, and the auxiliary information is included in the same or different system information, for example, a new SIB dedicated to providing auxiliary information.

[0098] Figure 3 An example of message exchange 300 performed according to some embodiments is shown.

[0099] Step 301: The UE obtains SIB1, where the enable indicator shows that auxiliary information for warning messages is enabled. In some examples, the enable indicator for auxiliary information can be based on the options discussed in the general procedure.

[0100] Step 302: The UE receives a DCI indicating that a short message has been scheduled in the cell. The short message can indicate that at least one of the warning messages (e.g., ETWS primary notification and / or ETWS secondary notification and / or CMAS notification) has been scheduled.

[0101] Step 303: The UE obtains the SIB to retrieve auxiliary information for the notification indicated in the short message. The UE uses this auxiliary information to deduce the service area of ​​the notification.

[0102] Step 304: The UE's action can vary based on the content of auxiliary information, which includes at least one of the following:

[0103] In Case 1: The auxiliary information received in step 303 is associated with the ETWS primary notification. When the UE location is available and within the service area associated with the ETWS primary notification, the UE attempts to receive the SIB to obtain the warning message for the ETWS primary notification and forwards the received complete message to higher layers. When the UE location is outside the service area, the UE avoids obtaining the SIB to receive the complete ETWS primary notification message and / or avoids forwarding the received complete message to higher layers. Alternatively, when the UE receives an ETWS primary notification requiring the UE to activate an emergency user alarm and / or activate a pop-up on the display, the UE does not activate the emergency user alarm and / or does not activate the pop-up on the display when the UE location is outside the service area. The SIB used to provide the warning message for the ETWS primary notification can be SIB6 for NR networks or SystemInformationBlockType10 for EUTRA (Enhanced Universal Terrestrial Radio Access) networks.

[0104] In scenario 2: The auxiliary information received in step 303 is associated with the ETWS secondary notification. When the UE location is available and within the service area associated with the ETWS secondary notification, the UE attempts to receive the SIB to obtain the warning message for the ETWS secondary notification and forwards the received complete message to higher layers. When the UE location is outside the service area, the UE avoids obtaining the SIB to receive the complete ETWS secondary notification message and / or avoids forwarding the complete warning message to higher layers. Alternatively, when the UE receives an ETWS secondary notification requiring the UE to activate an Emergency User Alert and / or activate a pop-up on the display, the UE does not activate the Emergency User Alert and / or does not activate the pop-up on the display when the UE location is outside the service area. The SIB used to provide the warning message for the ETWS secondary notification can be SIB7 for NR networks or SystemInformationBlockType11 for EUTRA networks.

[0105] In scenario 3: The auxiliary information received in step 303 is associated with a CMAS notification. When the UE location is available and within the service area associated with the CMAS notification, the UE attempts to receive the SIB to obtain a warning message for the CMAS notification and forwards the complete warning message to higher layers. When the UE location is outside the service area, the UE avoids obtaining SIB8 to receive the complete CMAS notification message and / or avoids forwarding the complete warning message to higher layers. Alternatively, when the UE location is outside the service area, the UE does not activate the Emergency User Alert / or does not activate the pop-up on the display when it receives a CMAS notification requiring the UE to activate the Emergency User Alert and / or activate a pop-up on the display. The SIB used to provide the warning message for the CMAS notification can be SIB8 for NR networks or SystemInformationBlockType12 for EUTRA networks.

[0106] In all three scenarios described above, higher management can take necessary actions based on the received warning messages (e.g., triggering alarms or pop-up messages). In some examples, one or more of scenarios 1 / 2 / 3 can occur simultaneously.

[0107] In some examples, the order of steps 302 and 303 can be interchanged, as long as the UE ensures that it uses a valid version of the SIB when deriving the service area indicated by the received short message notification. For example, the UE can obtain the SIB carrying auxiliary information and store it in the UE's memory. When the UE receives the DCI indicating the short message, and the stored SIB carrying auxiliary information is still valid, the UE can assess whether its location is within or outside the service area of ​​the scheduled notification message based on the stored SIB version. If the stored SIB version is invalid, the UE should obtain the SIB carrying auxiliary information before deciding whether to receive / apply the scheduled notification.

[0108] 5. Example Implementation 2: Enable indication in SIB1, and auxiliary information in SIB for paging messages.

[0109] Reference Figure 3In the second embodiment, in step 301, auxiliary information is used for the paging message in process 300. And in step 302, the DCI indicates the scheduling of the paging message. In step 303, the UE obtains the SIB to acquire auxiliary information for the paging message, thereby obtaining the service area of ​​the paging message. When provided, in step 304, the UE only acquires paging messages with a service area covering the UE's location (i.e., the UE's location is within the service area). In some examples, the auxiliary information can be associated with one or more paging records carried in the same paging message. In some examples, paging records included in a single paging message can have different service areas based on the provided auxiliary information. When provided, in step 304, the UE only decodes paging records with a service area covering the UE's location (i.e., the UE's location is within the service area).

[0110] For embodiments 1 / 2, other SIBs besides SIB1 for NR networks are also possible. For example, in some embodiments, an enable indicator can be included in SIB19 / SIB25 for NR networks. In some embodiments, an enable indicator can be included in SystemInformationBlockType1 / SystemInformationBlockType31 for EUTRA networks.

[0111] 6. Example 3: Enable indication in SMS messages and auxiliary information in SIB

[0112] In the third embodiment, the enable indicator can be included in the short message. Examples are shown below (table numbers refer to the relevant tables in the 3GPP standard document).

[0113] Example option 1:

[0114] Table 6.5-1: Short Messages

[0115]

[0116] In this case, step 301 of Embodiment 1 can be omitted. The indication is included in the DCI of step 302. When the UE receives a short message with the fifth bit set to 1, it indicates that auxiliary information (e.g., ETWS primary notification and / or ETWS secondary notification and / or CMAS notification) should be considered in the cell. In some examples, the remaining steps (steps 303-304) are the same as discussed in Embodiment 1. In some examples, this bit is optionally indicated when etwsAndCmasIndication is set to 1. Note that the terminology used in the above examples is merely illustrative, and other terms may be used.

[0117] Example option 2:

[0118] Table 6.5-1: Short Messages

[0119]

[0120] In this case, step 301 of Embodiment 1 is unnecessary. These indications are included in the DCI of step 302, wherein bits 5 through 7 are used to indicate whether auxiliary information is enabled for ETWS primary notifications, ETWS secondary notifications, or CMAS notifications, respectively. The terminology and the order of each bit are merely examples; other terms and orders are also possible.

[0121] In some examples, these bits are optionally indicated when etwsAndCmasIndication is set to 1. In some examples, step 303 is the same as the step in Embodiment 1. For step 304, when the corresponding indication is set to 1, the UE considers auxiliary information only for that broadcast message type. For example, if etwsAssistInfoIndication1 is set to 1, it indicates that auxiliary information is considered for the ETWS primary notification.

[0122] 7. Example 4: Enable indication in PEI and auxiliary information in SIB

[0123] Reference Figure 4 In process 400, in the fourth embodiment, an enable indication is included in the PEI, and auxiliary information is included in the system information, such as a new SIB dedicated to providing auxiliary information.

[0124] Step 401: For UEs that support PEI, if they have obtained an SIB with PEI configuration, they can use the PEI parameters in the system information to monitor PEI.

[0125] Step 402: If the UE receives a PEI with an enable indication for auxiliary information discussed in this document. If the UE detects the PEI and the PEI indicates that the subgroup to which the UE belongs is monitoring its associated PO (Paging Opportunity), as specified in 3GPP specification TS 38.213, then the UE monitors the associated PO.

[0126] For step 2, DCI format 2_7 is used to notify of paging advance indication and TRS availability indication for one or more UEs. In this embodiment, one or more remaining reserved bits in DCI format 2_7 can be used to indicate whether auxiliary information is enabled for broadcast messages. At least one of the following example options for enabling indication can be considered:

[0127] Example Option 1: One bit for enabling auxiliary information for warning messages. The warning message can include at least one of ETWS primary notifications, ETWS secondary notifications, or CMAS notifications.

[0128] Example option 2: One bit for enabling auxiliary information for paging messages.

[0129] Example Option 3: Separate bits for enabling auxiliary information for ETWS primary notifications, ETWS secondary notifications, or CMAS notifications, respectively.

[0130] Example Option 4: One bit for enabling auxiliary information for warning and paging messages. The warning message can include at least one of ETWS primary notification, ETWS secondary notification, or CMAS notification.

[0131] In some examples, it is possible to support combinations of options 1 and 2 or combinations of options 2 and 3.

[0132] Step 403: If the PEI includes an enable indication for enabling auxiliary information for at least one of the paging message or ETWS primary notification, ETWS secondary notification, or CMAS notification, the UE can acquire the SIB carrying that auxiliary information. For step 3, in some examples, the UE acquires the SIB carrying auxiliary information only if it receives a PEI with an enable indication for enabling auxiliary information and that the PEI indicates the subgroup to which the UE belongs to monitor its associated PO. That is, if the PEI does not indicate the subgroup to which the UE belongs, the UE does not acquire the SIB carrying auxiliary information. In some examples, the UE acquires the SIB carrying auxiliary information as long as the received PEI contains an enable indication for enabling auxiliary information.

[0133] Step 404A: During PO monitoring, if the UE detects a DCI indicating that a short message has been scheduled, the UE's procedure is the same as step 4 of Example 1.

[0134] Step 404B: During PO monitoring, if the UE detects a DCI indicating that a paging message has been scheduled, the UE's procedure is the same as step 4 in Example 2.

[0135] In some examples, the UE may detect a DCI indicating a paging message with a short message, in which case the UE performs both steps 404A and 404B.

[0136] For embodiments 1-4, the SIB carrying auxiliary information can be at least one of the following: a new SIB in the EUTRA or NR network dedicated to providing the auxiliary information discussed in this application, SIB19 for providing NR NTN auxiliary information, SIB25 for providing TN area information in the NR network, or SystemInformationBlockType31 for providing EUTRA IoT NTN auxiliary information.

[0137] 8. Example 5: Auxiliary information in an SIB carrying a warning message

[0138] Reference Figure 5 In the fifth embodiment of the described process 500, there is no explicit indication of whether auxiliary information is considered for broadcast message reception (e.g., for ETWS / CMAS warning messages). Instead, the UE relies on the presence of auxiliary information received in the warning message to determine whether to consider the auxiliary information when further receiving the warning message.

[0139] Step 501: The UE receives a DCI indicating that an ETWS primary notification and / or ETWS secondary notification and / or CMAS notification has been scheduled in the cell.

[0140] Step 502: The UE obtains the SIB to retrieve the warning message indicated in the short message. When the corresponding warning message type includes auxiliary information, the UE's action can be at least one of the following:

[0141] In Case 1: The auxiliary information received in step 303 is associated with the ETWS primary notification. When the UE location is available and within the service area associated with the ETWS primary notification, the UE attempts to receive the SIB to obtain the warning message for the ETWS primary notification and forwards the received complete message to higher layers. When the UE location is outside the service area, the UE avoids obtaining the SIB to receive the complete ETWS primary notification message and / or avoids forwarding the received complete message to higher layers. Alternatively, when the UE location is outside the service area, the UE does not activate the emergency user alarm and / or does not activate the pop-up on the display when it receives the ETWS primary notification requiring the UE to activate the emergency user alarm and / or activate the pop-up on the display. The SIB used to provide the warning message for the ETWS primary notification can be SIB6 for NR networks or SystemInformationBlockType10 for EUTRA networks.

[0142] In scenario 2: The auxiliary information received in step 303 is associated with the ETWS secondary notification. When the UE location is available and within the service area associated with the ETWS secondary notification, the UE attempts to receive the SIB to obtain the warning message for the ETWS secondary notification and forwards the received complete message to higher layers. When the UE location is outside the service area, the UE avoids obtaining the SIB to receive the complete ETWS secondary notification message and / or avoids forwarding the complete warning message to higher layers. Alternatively, when the UE location is outside the service area, the UE does not activate the emergency user alarm and / or does not activate the pop-up on the display when it receives the ETWS secondary notification requiring the UE to activate the emergency user alarm and / or activate the pop-up on the display. The SIB used to provide the warning message for the ETWS secondary notification can be SIB7 in the NR network or SystemInformationBlockType11 in the EUTRA network.

[0143] In scenario 3: The auxiliary information received in step 303 is associated with a CMAS notification. When the UE location is available and within the service area associated with the CMAS notification, the UE attempts to receive the SIB to obtain a warning message for the CMAS notification and forwards the complete warning message to higher layers. When the UE location is outside the service area, the UE avoids obtaining SIB8 to receive the complete CMAS notification message and / or avoids forwarding the complete warning message to higher layers. Alternatively, when the UE location is outside the service area, the UE does not activate the Emergency User Alert and / or does not activate the pop-up on the display when it receives a CMAS notification requiring the UE to activate the Emergency User Alert and / or activate a pop-up on the display. The SIB used to provide the warning message for the CMAS notification can be SIB8 for NR networks or SystemInformationBlockType12 for EUTRA networks.

[0144] In all three scenarios described above, higher management can take necessary actions based on the received warning message (e.g., triggering an alarm or pop-up message). In some examples, one or more of scenarios 1 / 2 / 3 can occur simultaneously.

[0145] 9. Example 6: Auxiliary information in paging messages

[0146] refer to Figure 6In the sixth embodiment, there is no explicit indication in process 600 to indicate whether auxiliary information is considered for broadcast message reception (e.g., for paging messages). Instead, the UE relies on the presence of auxiliary information received in the paging message to determine whether to consider it for further decoding of the paging record included in the paging message. In the first step 601, the UE receives a DCI indicating that the paging message is scheduled. In step 602, when the paging message includes auxiliary information as discussed in this document, the UE's action is the same as step 304 of embodiment 2.

[0147] 10. Example Implementation 7: Enable Indication in Paging Messages

[0148] refer to Figure 7 In process 700, in some embodiments (e.g., in EUTRA), there is no short message; instead, an ETWS indication / CMAS indication may be included in the paging message. In this case, an enable indication as discussed in Embodiment 1 is included in the paging message. And for step 701, the UE receives a paging message with an enable indication containing auxiliary information. When the paging message includes an ETWS / CMAS indication, steps 702 / 703 may be the same as steps 303 / 304 in Embodiment 1. When the paging message includes a paging record list, steps 702 / 703 may be the same as steps 303 / 304 in Embodiment 2. In some examples, the paging message may include an ETWS / CMAS / paging record list, and the UE may perform steps 303 / 304 of Embodiment 1 and steps 303 / 304 of Embodiment 2.

[0149] 11. Example Implementation 8: Auxiliary Information Transmitted via NW Interface

[0150] To enable NW to provide the auxiliary information discussed in this document, at least one of the following implementation options may be considered:

[0151] Option 1: Assistance information is generated in the CN and transmitted from the CN to the UE via NAS messages.

[0152] For option 1, at least one of the following can be considered:

[0153] In some examples, CBC / CBE generates auxiliary information to be provided to the UE.

[0154] In some examples, the AMF generates auxiliary information to be provided to the UE (e.g., for paging).

[0155] Option 2: Assistance information is generated in the CN. The CN forwards the assistance information to the base station, which then provides the assistance information to the UE via the air interface. The CN can provide the assistance information to the base station at least via the NG interface or the S1 interface.

[0156] For option 2, at least one of the following can be considered:

[0157] In some examples, the CN's AMF receives auxiliary information for warning messages from the CBC / CBE, and the base station obtains this auxiliary information from the AMF.

[0158] In some examples, the CN's AMF receives the geographic coverage area of ​​the service area associated with a broadcast message (e.g., a warning message) and converts it into auxiliary information to be provided to the base station, which then obtains this auxiliary information from the AMF.

[0159] In some examples, the base station obtains this auxiliary information from the CBC / CBE.

[0160] Option 3: Auxiliary information is generated in the base station and transmitted to the UE via the air interface. In this option, the base station can obtain the geographical coverage of the broadcast message from at least one of the CN's AMF, CBC, and CBE.

[0161] In this embodiment, the base station can be at least one of NG-RAN, eNB, or other base station types. The CN can be a 5G CN or an EPC. In the case where the CN is an EUTRA CN (e.g., an EPC), the AMF discussed in this embodiment is replaced by the MME (Mobility Management Entity).

[0162] 12. Example Implementation 9: UE Capability Indication

[0163] In some examples, UE support for using the auxiliary information discussed in this document is optional. In some examples, the UE can report its ability to use auxiliary information to the NW through at least one of a UE capability report message to the base station or a UE capability report message to the CN.

[0164] In this embodiment, the base station can be at least one of NG-RAN, eNB, or other base station types. The CN can be 5GC or EPC. This also applies when the CN is an EUTRA CN (e.g., EPC).

[0165] For reporting UE capability information related to assistance information discussed in this document, at least one of the following options may be considered:

[0166] Example Option 1: A capability indicator that indicates support for auxiliary information used in the warning message. The warning message can include at least one of ETWS primary notification, ETWS secondary notification, or CMAS notification.

[0167] Example Option 2: A capability indicator that indicates support for auxiliary information used in paging messages.

[0168] Example Option 3: Individual capability indications, used to indicate support for auxiliary information for ETWS primary notifications, ETWS secondary notifications, or CMAS notifications, respectively.

[0169] Example Option 4: A capability indicator to indicate support for auxiliary information used in warning and paging messages. The warning message can include at least one of ETWS primary notification, ETWS secondary notification, or CMAS notification.

[0170] In some examples, combinations of options 1 and 2, or combinations of options 2 and 3, can be considered.

[0171] 13. Example Technical Solution

[0172] Some preferred embodiments may implement the following technical solutions.

[0173] 1. A method for wireless communication (e.g., Figure 8 The method described in document 800 includes: receiving (802) auxiliary information related to a broadcast service from a network device by a wireless device; and making a decision regarding the broadcast service by the wireless device based on the auxiliary information (804). This document discloses various examples of the consequences of such decision, involving the use (or non-use) of broadcast service messages.

[0174] 2. A method for wireless communication (e.g., Figure 9 The method 900 described herein includes: transmitting (902) auxiliary information related to a broadcast service from a network device to a wireless device, wherein the auxiliary information allows the wireless device to make a decision regarding the broadcast service.

[0175] 3. The method according to any one of the above schemes, wherein the auxiliary information indicates the broadcast service area to which the broadcast service applies.

[0176] 4. The method according to any one of the above schemes, wherein the decision includes deciding whether to receive the broadcast service.

[0177] 5. The method according to any one of the above embodiments, wherein the auxiliary information includes an indication as to whether the wireless device uses the auxiliary information when deciding whether to receive the broadcast service.

[0178] 6. The method according to any one of the above embodiments, wherein the auxiliary information includes at least one of the following:

[0179] Service area information used to indicate the service area of ​​broadcast messages or broadcast services.

[0180] Type information used to indicate the type of broadcast service associated with the broadcast service, or

[0181] Mapping between auxiliary information and one or more broadcast messages associated with the broadcast service.

[0182] 7. The method according to Scheme 6, wherein the indication is used to indicate whether the auxiliary information is used for broadcasting services, wherein when the indication indicates that the auxiliary information is considered for use in the broadcasting services, the wireless device considers the auxiliary information.

[0183] 8. The method according to scheme 6 or 7, wherein the auxiliary information is included in the first transmission, and the decision is performed according to the instructions in the second transmission, wherein the first transmission includes a System Information Block (SIB) transmission, and the second transmission includes a Short Message transmission.

[0184] 9. The method according to Scheme 8, wherein the indication in the short message transmission includes one or more bit fields for indicating whether the auxiliary information is associated with a service type of ETWS primary notification, ETWS secondary notification, or CMAS notification.

[0185] 10. The method according to Scheme 9, wherein different bit fields are used to indicate at least some of the different service types.

[0186] 11. The method according to any one of claims 8 to 10, wherein, upon acquiring the first transmission, the wireless device performs: selectively acquiring a warning message based on the location of the wireless device, and forwarding the warning message to a higher layer.

[0187] 12. The method according to Scheme 11, wherein the wireless device is configured to acquire a System Information Block (SIB) containing the warning message when the location of the wireless device is within the broadcast service area, or the wireless device is configured not to acquire an SIB containing the warning message when the location of the wireless device is outside the broadcast service area, or the wireless device is configured to generate an alarm or pop-up message when the location of the wireless device is within the broadcast service area, or the wireless device is configured not to generate the alarm or pop-up message when the location of the wireless device is outside the broadcast service area.

[0188] 13. The method according to any one of the above schemes, wherein the network device includes network functions in the core network, and wherein the network device forwards the auxiliary information to the base station for transmission to the wireless device.

[0189] 14. The method according to any one of the above schemes, wherein the network device includes a base station, and wherein the base station receives the auxiliary information from network functions in the core network and forwards the auxiliary information to the wireless device.

[0190] 15. The method according to any one of the above schemes, wherein the network device includes a base station, and wherein the base station generates the auxiliary information and transmits it to the wireless device.

[0191] 16. A method for wireless communication (e.g., Figure 10 The method 1000 described herein includes: transmitting (1002) a capability indication from a wireless device to a network device, the capability indication indicating whether the wireless device has the capability to use auxiliary information related to a broadcast service, wherein the auxiliary information allows the wireless device to make a decision regarding the broadcast service.

[0192] 17. A method for wireless communication (e.g., Figure 11 The method 1100 described herein includes: receiving (1102) a capability indication from a wireless device by a network device, the capability indication indicating whether the wireless device has the capability to use auxiliary information related to a broadcast service, the auxiliary information allowing the wireless device to make a decision about the broadcast service; and selectively transmitting (1104) the auxiliary information to the wireless device based on the wireless device's indication that it has the capability to use the auxiliary information related to the broadcast service.

[0193] 18. The method according to any one of claims 16 to 17, wherein the wireless device makes a decision about the broadcast service based on the auxiliary information.

[0194] 19. The method according to any one of the above schemes, wherein the broadcast service includes a public warning system service.

[0195] 20. An apparatus for wireless communication, the apparatus comprising at least one processor configured to implement the method described in any one of the preceding embodiments.

[0196] 21. A computer storage medium having code stored thereon, wherein the code, when executed by at least one processor, causes at least one processor to perform the method described in any one of the above schemes.

[0197] Some of the embodiments described herein are described in the general context of methods or processes that may be implemented in one embodiment by a computer program product embodied in a computer-readable medium, including computer-executable instructions, such as program code executed by a computer in a networked environment. The computer-readable medium may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), optical disc (CD), digital versatile optical disc (DVD), etc. Therefore, the computer-readable medium may include non-transitory storage media. Typically, program modules may include routines, programs, objects, components, data structures, etc., that perform a particular task or implement a particular abstract data type. Computer or processor-executable instructions, associated data structures, and program modules represent examples of program code for performing steps of the methods disclosed herein. Specific sequences of such executable instructions or associated data structures represent examples of corresponding actions for implementing the functions described in these steps or processes.

[0198] Some of the disclosed embodiments can be implemented as devices or modules using hardware circuitry, software, or combinations thereof. For example, hardware circuitry implementations may include discrete analog and / or digital components, which may be integrated, for example, as part of a printed circuit board. Alternatively or additionally, the disclosed components or modules may be implemented as application-specific integrated circuits (ASICs) and / or field-programmable gate arrays (FPGAs) devices. Some implementations may additionally or alternatively include a digital signal processor (DSP), which is a dedicated microprocessor whose architecture is optimized for the operational requirements of digital signal processing associated with the functions disclosed herein. Similarly, the various components or sub-components within each module may be implemented in software, hardware, or firmware. Connections between modules and / or between components within a module may be provided using any connection method and medium known in the art, including but not limited to communication via the Internet, wired or wireless networks using appropriate protocols.

[0199] Although this document contains numerous specific details, these details should not be construed as limiting the scope of the claimed invention or the claimable content, but rather as descriptions of features specific to particular embodiments. Certain features described in this document within the context of individual embodiments can also be implemented in combination within a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented individually or in any suitable sub-combination across multiple embodiments. Furthermore, although the foregoing features may be described as operating in a particular combination, and even initially claimed in this way, one or more features from the claimed combination may be removed from that combination in certain circumstances, and the claimed combination may be for sub-combinations or variations thereof. Similarly, although operations are depicted in a specific order in the drawings, this should not be construed as requiring these operations to be performed in the specific order or sequence shown, or requiring the performance of all illustrated operations to achieve the desired result.

[0200] This document describes only some implementation methods and examples. Other implementation methods, improvements and variations can be made based on the content described and explained in this document.

Claims

1. A method for wireless communication, the method comprising: The wireless device receives auxiliary information related to the broadcast service from the network device; as well as The wireless device makes a decision regarding the broadcast service based on the auxiliary information.

2. A method for wireless communication, the method comprising: Network devices transmit auxiliary information related to broadcast services to wireless devices, wherein the auxiliary information allows the wireless devices to make decisions regarding the broadcast services.

3. The method according to any one of the preceding claims, wherein, The auxiliary information indicates the broadcast service area to which the broadcast service applies.

4. The method according to any one of the preceding claims, wherein, The decision includes deciding whether to receive the broadcast service.

5. The method according to any one of the preceding claims, wherein, The auxiliary information includes instructions on whether the wireless device should use the auxiliary information when deciding whether to receive the broadcast service.

6. The method according to any one of the preceding claims, wherein, The auxiliary information includes at least one of the following: Service area information used to indicate the service area of ​​broadcast messages or broadcast services. Type information used to indicate the type of broadcast service associated with the broadcast service, or Mapping between auxiliary information and one or more broadcast messages associated with the broadcast service.

7. The method according to claim 6, wherein, The indication is used to indicate whether the auxiliary information is used for broadcast services, wherein when the indication indicates that the auxiliary information is considered for use in the broadcast services, the wireless device considers the auxiliary information.

8. The method according to claim 6 or 7, wherein, The auxiliary information is included in the first transmission, and the decision is made according to the instructions in the second transmission, wherein the first transmission includes a System Information Block (SIB) transmission, and the second transmission includes a Short Message transmission.

9. The method according to claim 8, wherein, The indication in the short message transmission includes one or more bit fields that indicate whether the auxiliary information is associated with a service type of ETWS primary notification, ETWS secondary notification, or CMAS notification.

10. The method according to claim 9, wherein, Different bit fields are used to indicate at least some of the different service types.

11. The method according to any one of claims 8 to 10, wherein, When acquiring the first transmission, the wireless device performs: Warning messages are selectively obtained based on the location of the wireless device, and the warning messages are forwarded to higher layers.

12. The method according to claim 11, wherein: If the wireless device is located within the broadcast service area, the wireless device is configured to acquire a System Information Block (SIB) containing the warning message; or if the wireless device is located outside the broadcast service area, the wireless device is configured not to acquire the SIB containing the warning message. When the location of the wireless device is within the broadcast service area, the wireless device is configured to generate an alarm or pop-up message; or when the location of the wireless device is outside the broadcast service area, the wireless device is configured not to generate the alarm or pop-up message.

13. The method according to any one of the preceding claims, wherein, The network device includes network functions in the core network, and wherein the network device forwards the auxiliary information to the base station for transmission to the wireless device.

14. The method according to any one of the preceding claims, wherein, The network device includes a base station, wherein the base station receives the auxiliary information from network functions in the core network and forwards the auxiliary information to the wireless device.

15. The method according to any one of the preceding claims, wherein, The network device includes a base station, wherein the base station generates the auxiliary information for the wireless device.

16. A method for wireless communication, the method comprising: A capability indication is transmitted from a wireless device to a network device, the capability indication indicating whether the wireless device has the capability to use auxiliary information related to the broadcast service, wherein the auxiliary information allows the wireless device to make decisions regarding the broadcast service.

17. A method for wireless communication, the method comprising: The network device receives a capability indication from the wireless device, the capability indication indicating whether the wireless device has the capability to use auxiliary information related to the broadcast service, the auxiliary information allowing the wireless device to make decisions about the broadcast service; as well as Selectively, the auxiliary information is transmitted to the wireless device based on the wireless device's indication that the wireless device has the ability to use the auxiliary information related to the broadcast service.

18. The method according to any one of claims 16 to 17, wherein, The wireless device makes a decision about the broadcast service based on the auxiliary information.

19. The method according to any one of the preceding claims, wherein, The broadcast service includes a public warning system service.

20. An apparatus for wireless communication, the apparatus comprising at least one processor configured to implement the method according to any one of the preceding claims.

21. A computer storage medium having code stored thereon, wherein, When the code is executed by at least one processor, it causes the at least one processor to perform the method according to any one of the preceding claims.

Images