Communication method, core network device, access network device, communication system, and storage medium

Abstract

Embodiments of the present disclosure provide a communication method, a core network device, an access network device, a communication system, and a storage medium. The method comprises: sending a first message to an access network device on the basis of first information, wherein the first information is used for indicating that paging a terminal fails and / or the access network device requests a core network device to send the first message, the first message is used for triggering the access network device to send a second message to the terminal, and the second message is used for instructing the terminal to change a signal receiving environment. The technical solution provided by the embodiments of the present disclosure clarifies a triggering mechanism upon the introduction of a robust paging notification alarm.

Description

Communication method, core network device, access network device, communication system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, core network equipment, access network equipment, a communication system, and a storage medium. Background Art

[0002] In the field of communications technology, a robust paging notification alert mechanism has been introduced. When a terminal cannot fully detect the synchronization signal block (SSB), the access network equipment will send a paging message or short message to the terminal. Upon receiving the robust paging notification alert, the terminal can move to a better reception location and respond to normal paging calls.

[0003] Summary of the Invention

[0004] After the introduction of the robust paging notification alarm mechanism, it must be used with caution because it consumes more network resources. Therefore, it is necessary to consider under what conditions to use it and how to trigger its use.

[0005] Embodiments of the present disclosure provide a communication method, a core network device, an access network device, a communication system, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, the method being performed by a core network device, the method comprising:

[0007] Sending a first message to the access network device based on the first information;

[0008] Among them, the first information is used to indicate: paging terminal failure and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, the method being performed by an access network device, the method comprising:

[0010] Receiving a first message sent by a core network device;

[0011] Among them, the first message is sent based on the first information, and the first information is used to indicate: the paging terminal fails and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0012] According to a third aspect of an embodiment of the present disclosure, a communication method is provided, the method comprising:

[0013] Based on the first information, the core network device sends a first message to the access network device;

[0014] Among them, the first information is used to indicate: paging terminal failure and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0015] According to a fourth aspect of an embodiment of the present disclosure, a core network device is provided, the core network device including:

[0016] The transceiver module is configured as follows:

[0017] Sending a first message to the access network device based on the first information;

[0018] Among them, the first information is used to indicate: paging terminal failure and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0019] According to a fifth aspect of an embodiment of the present disclosure, an access network device is provided, the access network device including:

[0020] The transceiver module is configured as follows:

[0021] Receiving a first message sent by a core network device;

[0022] Among them, the first message is sent based on the first information, and the first information is used to indicate: the paging terminal fails and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0023] According to the sixth aspect of an embodiment of the present disclosure, a communication system is provided, wherein the communication system includes a core network device and an access network device; the core network device is configured to implement the method described in the first aspect, and the access network device is configured to implement the method described in the second aspect.

[0024] According to a seventh aspect of an embodiment of the present disclosure, a core network device is provided, the core network device including:

[0025] one or more processors;

[0026] The core network device is used to execute the method described in the first aspect.

[0027] According to an eighth aspect of an embodiment of the present disclosure, an access network device is provided, the access network device including:

[0028] one or more processors;

[0029] The access network device is used to execute the method described in the second aspect.

[0030] According to a ninth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, which, when executed on a communication device, enable the communication device to execute the method provided in the first aspect and / or the second aspect.

[0031] The technical solution provided by the embodiments of the present disclosure clarifies the triggering mechanism after the introduction of the robust paging notification alarm.

[0032] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0034] FIG1a is a schematic diagram showing a communication system architecture according to an exemplary embodiment;

[0035] FIG2a is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0036] FIG3a is a flow chart showing a communication method according to an exemplary embodiment;

[0037] FIG3 b is a flow chart showing a communication method according to an exemplary embodiment;

[0038] FIG4a is a flow chart showing a communication method according to an exemplary embodiment;

[0039] FIG4b is a flow chart showing a communication method according to an exemplary embodiment;

[0040] FIG5a is a flow chart showing a communication method according to an exemplary embodiment;

[0041] FIG6a is a flow chart showing a communication method according to an exemplary embodiment;

[0042] FIG6 b is a flow chart showing a communication method according to an exemplary embodiment;

[0043] FIG7a is a schematic structural diagram of a core network device according to an exemplary embodiment;

[0044] FIG7b is a schematic structural diagram of a terminal according to an exemplary embodiment;

[0045] FIG8a is a schematic structural diagram of a UE according to an exemplary embodiment;

[0046] Fig. 8b is a schematic structural diagram of a communication device according to an exemplary embodiment. DETAILED DESCRIPTION

[0047] Embodiments of the present disclosure provide a communication method, a core network device, an access network device, a communication system, and a storage medium.

[0048] In a first aspect, an embodiment of the present disclosure provides a communication method, which is performed by a core network device, and includes:

[0049] Sending a first message to the access network device based on the first information;

[0050] Among them, the first information is used to indicate: paging terminal failure and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0051] In the above embodiment, when the paging terminal fails and / or the access network device requests the core network device to send the first message, the core network device will promptly send the first message to the access network device to trigger the access network device to send a second message to the terminal to instruct the terminal to change the signal receiving environment. Compared with the method that cannot be triggered in time, the terminal can promptly change the signal receiving environment and receive the paging message promptly and reliably.

[0052] In combination with some embodiments of the first aspect, in some embodiments, the first message is not a paging message; the first message includes second information, and the second information includes at least one of the following: an identifier of the terminal; a location of the terminal.

[0053] In the above embodiment, the first message carrying the terminal identifier and / or the location of the terminal may be sent.

[0054] In combination with some embodiments of the first aspect, in some embodiments, the first message and the paging message are sent simultaneously.

[0055] In the above embodiment, the first message may be sent at the same time as the paging message.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the first message is a paging message, the first message includes second information and third information, the second information includes at least one of the following: the identification of the terminal; the location of the terminal; the third information is used to trigger the access network device to send a second message to the terminal.

[0057] In the above embodiment, the purpose of triggering the access network device to send the second message to the terminal can be achieved through the vice president paging message.

[0058] In conjunction with some embodiments of the first aspect, in some embodiments, sending a first message to the access network device based on the first information includes:

[0059] Determining that no response message to the paging of the terminal is received within a first time period, and sending the first message to the access network device.

[0060] In the above embodiment, when the core network device does not receive a response message to the paging terminal within the first time period, it will promptly send the first message to the access network device.

[0061] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0062] Determine to send a paging message and start a first timer;

[0063] The determining that no response message to the paging terminal is received within the first time period, and sending a first message to the access network device, includes:

[0064] It is determined that the first timer has timed out and no response message to the paging of the terminal is received, and a first message is sent to the access network device.

[0065] In the above embodiment, the first timer may be started when the paging message is sent, and when it is determined that the first timer has timed out and no response message to the paging terminal is received, the first message may be sent to the access network device in a timely manner.

[0066] In combination with some embodiments of the first aspect, in some embodiments, the timing duration of the first timer is greater than the timing duration of the second timer, and the second timer is a paging waiting timer used for paging.

[0067] In the above embodiment, since the timing duration of the first timer is greater than the timing duration of the second timer, frequent sending of the first message due to signal fluctuations can be reduced.

[0068] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0069] determining that the second timer times out and no response message to the paging of the terminal is received, and determining that the paging of the terminal fails;

[0070] Within the timing duration of the first timer, the next paging for the terminal is started.

[0071] In the above embodiment, the terminal will continue to be paged before the first timer expires.

[0072] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0073] Determine that the response message is received within the timing duration of the first timer, and reset the first timer.

[0074] In the above embodiment, the first timer is reset in time when a response message is received.

[0075] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0076] Starting a first counter, wherein the first counter counts based on the number of paging failures;

[0077] The determining that no response message to the paging terminal is received within the first time period, and sending a first message to the access network device, includes:

[0078] It is determined that the first counter is full and no response message to the paging of the terminal is received, and a first message is sent to the access network device.

[0079] In the above embodiment, the first counter may be started, and when it is determined that the first counter is full and no response message to the paging terminal is received, the first message may be sent to the access network device in a timely manner.

[0080] In conjunction with some embodiments of the first aspect, in some embodiments, determining that no response message for paging the terminal is received within the first time period, and sending a first message to the access network device, includes:

[0081] Determining that the second timer times out and no response message to the paging terminal is received, sending a first message to the access network device;

[0082] The second timer is a paging waiting timer used for paging.

[0083] In the above embodiment, when it is determined that the second timer has timed out and no response message to the paging of the terminal is received, the first message is sent to the access network device in a timely manner.

[0084] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0085] receiving fourth information sent by the access network device;

[0086] The fourth information is used to indicate that paging the terminal fails and / or requests the core network device to send the first message.

[0087] In the above embodiment, the first message is sent in a timely manner after receiving the fourth information sent by the access network device for indicating the failure of paging the terminal and / or requesting the core network device to send the first message.

[0088] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0089] The first information is determined based on the fourth information.

[0090] In the above embodiment, the first information may be determined based on the fourth information.

[0091] In conjunction with some embodiments of the first aspect, in some embodiments, sending a first message to the access network device based on the first information includes:

[0092] Sending a first message to the access network device based on the first information and the fifth information;

[0093] The fifth information includes at least one of the following: user contract information; operator configuration policy information.

[0094] In the above embodiment, the first message may be sent to the access network device based on the first information and at least one of the user subscription information and the operator configuration policy information.

[0095] In conjunction with some embodiments of the first aspect, in some embodiments, sending a first message to the access network device based on the first information and the fifth information includes at least one of the following:

[0096] determining that paging the terminal fails and / or the access network device requests to send the first message, and determining that the user subscription information includes information that the terminal supports satellite access, and sending the first message to the access network device;

[0097] Determine that paging the terminal fails and / or the access network device requests to send the first message, and determine that the operator configuration policy information indicates that the terminal is instructed to change the signal receiving environment when paging fails, and send the first message to the access device.

[0098] In the above embodiment, when it is determined that the paging terminal fails and / or the access network device requests to send the first message and it is determined that the user contract information includes information that the terminal supports satellite access, the first message will be sent to the access network device in a timely manner; and / or when it is determined that the paging terminal fails and / or the access network device requests to send the first message and it is determined that the operator configuration policy information indicates that the terminal is instructed to change the signal receiving environment when paging fails, the first message will be sent to the access device in a timely manner.

[0099] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by an access network device, and includes:

[0100] Receiving a first message sent by a core network device;

[0101] Among them, the first message is sent based on the first information, and the first information is used to indicate: the paging terminal fails and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0102] In combination with some embodiments of the second aspect, in some embodiments, the first message is not a paging message; the first message includes second information, and the second information includes at least one of the following: an identifier of the terminal; a location of the terminal.

[0103] In combination with some embodiments of the second aspect, in some embodiments, the first message and the paging message are sent simultaneously.

[0104] In combination with some embodiments of the second aspect, in some embodiments, the first message is a paging message, the first message includes second information and third information, the second information includes at least one of the following: the identification of the terminal; the location of the terminal; the third information is used to trigger the access network device to send a second message to the terminal.

[0105] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0106] Determining that paging the terminal fails and / or requesting the core network device to send the first message, and sending fourth information to the core network device;

[0107] The fourth information is used to indicate that paging the terminal fails and / or to request the core network device to send the first message.

[0108] In a third aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0109] Based on the first information, the core network device sends a first message to the access network device;

[0110] Among them, the first information is used to indicate: paging terminal failure and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0111] In a fourth aspect, an embodiment of the present disclosure provides a core network device, the core network device including:

[0112] The transceiver module is configured as follows:

[0113] Sending a first message to the access network device based on the first information;

[0114] Among them, the first information is used to indicate: paging terminal failure and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0115] In a fifth aspect, an embodiment of the present disclosure provides an access network device, the access network device comprising:

[0116] The transceiver module is configured as follows:

[0117] Receiving a first message sent by a core network device;

[0118] Among them, the first message is sent based on the first information, and the first information is used to indicate: the paging terminal fails and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0119] In a sixth aspect, an embodiment of the present disclosure provides a communication system, which includes a core network device and an access network device; the core network device is configured to implement the method described in the first aspect, and the access network device is configured to implement the method described in the second aspect.

[0120] In a seventh aspect, an embodiment of the present disclosure provides a core network device, the core network device including:

[0121] one or more processors;

[0122] Among them, the core network device is used to execute the method provided by the first aspect.

[0123] In an eighth aspect, an embodiment of the present disclosure provides an access network device, the access network device including:

[0124] one or more processors;

[0125] Among them, the access network device is used to execute the method provided by the second aspect.

[0126] In a ninth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, which, when executed on a communication device, enable the communication device to execute the method described in the optional implementation of the first and second aspects.

[0127] In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0128] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0129] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0130] It is understandable that the core network devices, access network devices, communication systems, storage media, program products, computer programs, chips, or chip systems described above are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0131] The present disclosure provides a communication method, a core network device, an access network device, a communication system, and a storage medium. In some embodiments, the terms "communication method" and "information indication method," "information processing method," and "information transmission method" are interchangeable, and the terms "communication system" and "information processing system" are interchangeable.

[0132] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0133] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0134] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0135] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0136] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0137] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0138] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0139] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0140] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0141] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0142] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0143] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0144] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0145] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0146] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0147] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0148] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0149] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0150] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0151] FIG1a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0152] As shown in FIG. 1 a , a communication system 100 includes a terminal 101 and a network device 102 .

[0153] In some embodiments, the network device 102 may include at least one of an access network device 1021 and a core network device 1022 .

[0154] In some embodiments, the access network device 1021 may be a satellite access network device.

[0155] In some embodiments, the core network device 1022 may be a core network device.

[0156] In some embodiments, the terminal includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0157] In some embodiments, the access network device may be, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0158] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0159] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0160] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0161] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0162] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1a, or a portion thereof, but are not limited thereto. The entities shown in FIG1a are illustrative only. The communication system may include all or a portion of the entities shown in FIG1a, or may include other entities other than those shown in FIG1a. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0163] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0164] In some embodiments, in suburban and rural scenarios, shadow fading and clutter loss may occur, and the non-line of sight (NLOS) caused by clutter loss may reach over 18 dB.

[0165] In some embodiments, line-of-sight probability indicates that at an altitude of 30 degrees, approximately 10% of rural users and 50% of urban users will experience NLOS. For terminal-initiated services, users can consciously choose a good location to initiate calls to avoid NLOS. However, for network-initiated services, missing paging due to poor signal conditions at the user's location can impact critical services such as emergency calls.

[0166] In some embodiments, in normal operation, when the UE is in idle mode and wakes up to monitor its paging occasion, the UE needs to correctly detect the SSB in order to continue monitoring its paging occasion. When the NLOS loss is as high as 18dB, the UE is usually unable to detect the SSB and eventually declares a Radio Link Failure (RLF), even if it is still within the coverage of the satellite beam. When the network attempts to send a normal paging in the legacy New Radio (NR) physical downlink channel, it will start the T3513 timer and wait for the UE's response. In a severe NLOS channel, the UE will not respond and T3513 expires, which means that the paging attempt has failed. After a certain number of failed attempts, the network will eventually give up the paging effort.

[0167] In some embodiments, it is important to send paging calls and short messages to those UEs under adverse reception channel conditions, as this will greatly improve the user experience in non-terrestrial network (NTN) communication systems, especially for those public safety services.

[0168] In some embodiments, a robust paging notification alert is introduced to send a paging message or short message to the UE under severe NLOS channel conditions when the NR SSB cannot be fully detected. The robust notification alert is a downlink-only physical channel with its own built-in system information and synchronization signals, and its operating signal-to-interference plus noise ratio (SNR) is much lower than that of the traditional NR physical downlink channel. In order to reliably deliver the paging call, the network will have to switch to a reliable notification alert after a certain number of failed traditional paging attempts. When the UE receives the robust paging notification alert, the UE can move to a better reception position and respond to the normal paging.

[0169] It should be noted that under what conditions and how to trigger the robust notification alert to the UE so as to notify the UE to move to a better reception location and respond to a normal paging call are issues that need to be considered.

[0170] FIG2a is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2a, the present disclosure embodiment relates to a communication method for a communication system 100, the method comprising:

[0171] Step S2101: The core network device determines the first information.

[0172] In some embodiments, the core network device may be an Access and Mobility Management Function (AMF).

[0173] In some embodiments, the first information is used to indicate a paging terminal failure.

[0174] In some embodiments, the first information is used to instruct the access network device to request the core network device to send the first message.

[0175] In some embodiments, the first information is used to indicate that paging the terminal has failed and that the access network device requests the core network device to send the first message.

[0176] In some embodiments, the core network device receives fourth information sent by the access network device.

[0177] In some embodiments, the access network device sends fourth information to the core network device.

[0178] In some embodiments, the fourth information is used to indicate that paging the terminal fails and / or requests the core network device to send the first message.

[0179] In some embodiments, the fourth information is used to indicate that paging the terminal fails.

[0180] In some embodiments, the fourth information is used to indicate a request for the core network device to send the first message.

[0181] In some embodiments, the core network device determines the first information based on the fourth information.

[0182] In some embodiments, the access network device determines that paging the terminal fails and / or requests the core network device to send the first message, and sends fourth information to the core network device.

[0183] Step S2102: The core network device sends a first message to the access network device.

[0184] In some embodiments, the access network device receives a first message sent by the core network device.

[0185] In some embodiments, based on the first information, the core network device sends a first message (which may be a robust notification message) to the access network device.

[0186] In some embodiments, the first message is used to trigger the access network device to send a second message to the terminal.

[0187] It should be noted that, in some scenarios, the core network device sending the first message to the access network device or triggering the access network device to send the second message to the terminal can also be called enabling robust notification.

[0188] In some embodiments, the second message is used to instruct the terminal to change the signal receiving environment.

[0189] In some embodiments, the first message is not a paging message.

[0190] In some embodiments, the first message includes second information, and the second information includes at least one of the following: an identification of the terminal; and a location of the terminal.

[0191] In some embodiments, the first message and the paging message are sent simultaneously.

[0192] Exemplarily, the first message may be a separate message used to trigger the gNB to initiate a robust notification alert to the UE (i.e., trigger the access network device to send a second message to the terminal). At this time, the robust notification message may be sent simultaneously with the paging message.

[0193] In some embodiments, the first message is a paging message.

[0194] In some embodiments, the first message includes second information and third information, the second information includes at least one of the following: an identifier of the terminal; a location of the terminal; and the third information is used to trigger the access network device to send a second message to the terminal.

[0195] Exemplarily, the robust notification message may be an enhancement of the paging message, that is, the paging message carries a robust notification indication to trigger the gNB to initiate a robust notification alert to the UE.

[0196] In some embodiments, it is determined that no response message to paging the terminal is received within a first time period, and the core network device sends the first message to the access network device.

[0197] In some embodiments, in response to not receiving a response message to paging the terminal within a first time period, the core network device sends the first message to the access network device.

[0198] In some embodiments, when no response message to paging the terminal is received within a first time period, the core network device sends the first message to the access network device.

[0199] In some embodiments, it is determined to send a paging message, and the core network device starts a first timer.

[0200] Exemplarily, the first timer may be a robust notification timer.

[0201] In some embodiments, when it is determined that the first timer has timed out and no response message to the paging of the terminal is received, a first message is sent to the access network device.

[0202] In some embodiments, the timing duration of the first timer is greater than the timing duration of the second timer, and the second timer is a paging waiting timer used for paging.

[0203] Exemplarily, the second timer is a T3513 timer.

[0204] In some embodiments, it is determined that the second timer has timed out and no response message to the paging of the terminal has been received, and the core network device determines that the paging of the terminal has failed.

[0205] In some embodiments, within the timing duration of the first timer, the core network device initiates the next paging for the terminal.

[0206] In some embodiments, it is determined that the response message is received within the timing duration of the first timer, and the core network device resets the first timer.

[0207] Exemplarily, a robust notification timer is set on the AMF. The timer duration is greater than T3513, for example, several times longer than T3513. The timer is started when the AMF initiates the first paging. If the timer expires and the core network function still has not received a paging response message, it determines that robust notification is enabled. If the paging is successful, the timer is reset.

[0208] In some embodiments, the core network device starts a first counter, and the first counter counts based on the number of paging failures.

[0209] In some embodiments, when it is determined that the first counter is full and no response message to the paging message for the terminal is received, the core network device sends a first message to the access network device.

[0210] Exemplarily, a counter count is set on the AMF, and its initial value can be set to an integer number of times. The AMF initiates paging. If paging fails once, the counter is reduced by 1. When the counter value is 0, the core network device determines to enable robust notification and sends a first message to the access network device.

[0211] In some embodiments, when it is determined that the second timer has timed out and no response message to the paging terminal has been received, the core network device sends a first message to the access network device.

[0212] In some embodiments, the second timer is a paging wait timer for paging.

[0213] In some embodiments, if the configured T3513 expires and no paging response message is received, the core network device determines to enable robust notification. Exemplarily, when the core network function continues to send paging messages, it also sends a robust notification message, ie, the first message.

[0214] In some embodiments, based on the first information and the fifth information, the core network device sends a first message to the access network device.

[0215] In some embodiments, the fifth information includes at least one of the following: user subscription information; operator configuration policy information.

[0216] Exemplarily, the core network device determines that paging the terminal fails, determines to enable robust notification based on at least one of user subscription information and operator configuration policy, and sends a first message to the access network device.

[0217] For example, when determining to enable robust notification, the core network element also needs to combine at least one of the following information:

[0218] Based on the subscription service (eg, emergency call service) included in the user subscription information, it is determined that a robust notification needs to be initiated.

[0219] Based on the operator's configuration policy, for example, indicating that a robust notification needs to be initiated for a specific user in a specified area.

[0220] Exemplarily, it is determined whether the user contract information contains satellite access information (for example, the user has signed up for access type = NR (LEO) NR (meo)). If the user has signed up for satellite access, it is determined to initiate a robust notification, that is, to send a first message to the access network device.

[0221] In some embodiments, it is determined that the paging terminal fails and / or the access network device requests to send the first message, and it is determined that the user subscription information includes information that the terminal supports satellite access, and the core network device sends the first message to the access network device.

[0222] In some embodiments, when it is determined that the paging terminal fails and / or the access network device requests to send the first message and it is determined that the user subscription information contains information that the terminal supports satellite access, the core network device sends the first message to the access network device.

[0223] In some embodiments, in response to a paging terminal failure and / or a request by the access network device to send the first message, and determining that the user subscription information includes information that the terminal supports satellite access, the core network device sends the first message to the access network device.

[0224] In some embodiments, it is determined that the paging terminal fails and / or the access network device requests to send the first message, and it is determined that the operator configuration policy information indicates that the terminal should change the signal receiving environment when the paging fails, and the core network device sends the first message to the access device.

[0225] In some embodiments, when it is determined that the paging terminal fails and / or the access network device requests to send the first message and it is determined that the operator configuration policy information indicates that the terminal is instructed to change the signal receiving environment when paging fails, the core network device sends the first message to the access device.

[0226] In some embodiments, in response to a paging terminal failure and / or a request by the access network device to send the first message, and determining that the operator configuration policy information indicates that the terminal should change the signal receiving environment when paging fails, the core network device sends the first message to the access device.

[0227] Step S2103: The access network device sends a second message to the terminal.

[0228] In some embodiments, the terminal receives a second message sent by the access network device.

[0229] In some embodiments, the second message is used to instruct the terminal to change the signal receiving environment.

[0230] In some embodiments, the term "information" can be interchangeable with terms such as "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", and "data".

[0231] In some embodiments, the term "send" can be interchanged with terms such as "transmit", "report", and "transmit".

[0232] The information indication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2103. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, and step S2103 can be implemented as an independent embodiment. For example, step S2101 combined with step S2102 and step S2103 can be implemented as independent embodiments, and step S2102 combined with step S2103 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0233] Figure 3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 3a, the embodiment of the present disclosure relates to a communication method, which is executed by a core network device. The method includes:

[0234] Step S3101: Determine the first information.

[0235] In some embodiments, optional implementations of step S3101 may refer to step S2102 in FIG. 2 a and other related parts of the embodiment involved in FIG. 2 a , which will not be described in detail here.

[0236] Step S3102: Send a first message to the access network device.

[0237] In some embodiments, optional implementations of step S3102 may refer to step S2103 of FIG. 2 a and other related parts of the embodiment involved in FIG. 2 a , which will not be described in detail here.

[0238] The information indication method involved in the embodiment of the present disclosure may include at least one of step S3101 to step S3102. For example, step S3101 may be implemented as an independent embodiment, and step S3102 may be implemented as an independent embodiment, but is not limited thereto.

[0239] Figure 3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 3b, the embodiment of the present disclosure relates to a communication method, which is executed by a core network device. The method includes:

[0240] Step S3201: Based on the first information, a first message is sent to the access network device.

[0241] In some embodiments, the first information is used to indicate: paging terminal failure and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0242] In some embodiments, optional implementations of step S3201 may refer to step S2102 in FIG. 2 a and other related parts of the embodiment involved in FIG. 2 a , which will not be described in detail here.

[0243] In some embodiments, the first message is not a paging message; the first message includes second information, and the second information includes at least one of the following: an identifier of the terminal; and a location of the terminal.

[0244] In some embodiments, the first message and the paging message are sent simultaneously.

[0245] In some embodiments, the first message is a paging message, the first message includes second information and third information, the second information includes at least one of the following: the identification of the terminal; the location of the terminal; the third information is used to trigger the access network device to send a second message to the terminal.

[0246] In some embodiments, the sending a first message to the access network device based on the first information includes:

[0247] Determining that no response message to the paging of the terminal is received within a first time period, and sending the first message to the access network device.

[0248] In some embodiments, the method further comprises:

[0249] Determine to send a paging message and start a first timer;

[0250] The determining that no response message to the paging terminal is received within the first time period, and sending a first message to the access network device, includes:

[0251] It is determined that the first timer has timed out and no response message to the paging of the terminal is received, and a first message is sent to the access network device.

[0252] In some embodiments, the timing duration of the first timer is greater than the timing duration of the second timer, and the second timer is a paging waiting timer used for paging.

[0253] In some embodiments, the method further comprises:

[0254] determining that the second timer times out and no response message to the paging of the terminal is received, and determining that the paging of the terminal fails;

[0255] Within the timing duration of the first timer, the next paging for the terminal is started.

[0256] In some embodiments, the method further comprises:

[0257] Determine that the response message is received within the timing duration of the first timer, and reset the first timer.

[0258] In some embodiments, the method further comprises:

[0259] Starting a first counter, wherein the first counter counts based on the number of paging failures;

[0260] The determining that no response message to the paging terminal is received within the first time period, and sending a first message to the access network device, includes:

[0261] It is determined that the first counter is full and no response message to the paging of the terminal is received, and a first message is sent to the access network device.

[0262] In some embodiments, determining that no response message to paging the terminal is received within the first time period, and sending a first message to the access network device, includes:

[0263] Determining that the second timer times out and no response message to the paging terminal is received, sending a first message to the access network device;

[0264] The second timer is a paging waiting timer used for paging.

[0265] In some embodiments, the method further comprises:

[0266] receiving fourth information sent by the access network device;

[0267] The fourth information is used to indicate that paging the terminal fails and / or requests the core network device to send the first message.

[0268] In some embodiments, the method further comprises:

[0269] The first information is determined based on the fourth information.

[0270] In some embodiments, the sending a first message to the access network device based on the first information includes:

[0271] Sending a first message to the access network device based on the first information and the fifth information;

[0272] The fifth information includes at least one of the following: user contract information; operator configuration policy information.

[0273] In some embodiments, the sending of the first message to the access network device based on the first information and the fifth information includes at least one of the following:

[0274] determining that paging the terminal fails and / or the access network device requests to send the first message, and determining that the user subscription information includes information that the terminal supports satellite access, and sending the first message to the access network device;

[0275] Determine that paging the terminal fails and / or the access network device requests to send the first message, and determine that the operator configuration policy information indicates that the terminal is instructed to change the signal receiving environment when paging fails, and send the first message to the access device.

[0276] Figure 4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 4a, the embodiment of the present disclosure relates to a communication method, which is executed by an access network device. The method includes:

[0277] Step S4101: Get the first message.

[0278] In some embodiments, optional implementations of step S4101 may refer to other related parts of the embodiment involved in step S2102 in FIG. 2 a , which will not be described in detail here.

[0279] Step S4102: Send a second message to the terminal.

[0280] In some embodiments, optional implementations of step S4102 may refer to other related parts of the embodiment involved in step S2103 in FIG. 2 a , which will not be described in detail here.

[0281] The information indication method involved in the embodiment of the present disclosure may include at least one of step S4101 to step S4102. For example, step S4101 may be implemented as an independent embodiment, and step S4102 may be implemented as an independent embodiment, but is not limited thereto.

[0282] Figure 4b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 4b, the embodiment of the present disclosure relates to a communication method, which is executed by an access network device. The method includes:

[0283] Step S4201: Receive a first message sent by a core network device.

[0284] In some embodiments, the first message is sent based on first information, and the first information is used to indicate: the paging terminal fails and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0285] In some embodiments, optional implementations of step S4201 may refer to other related parts of the embodiment involved in step S2102 in FIG. 2 a , which will not be described in detail here.

[0286] In some embodiments, the first message is not a paging message; the first message includes second information, and the second information includes at least one of the following: an identifier of the terminal; and a location of the terminal.

[0287] In some embodiments, the first message and the paging message are sent simultaneously.

[0288] In some embodiments, the first message is a paging message, the first message includes second information and third information, the second information includes at least one of the following: the identification of the terminal; the location of the terminal; the third information is used to trigger the access network device to send a second message to the terminal.

[0289] In some embodiments, the method further comprises:

[0290] Determining that paging the terminal fails and / or requesting the core network device to send the first message, and sending fourth information to the core network device;

[0291] The fourth information is used to indicate that paging the terminal fails and / or to request the core network device to send the first message.

[0292] Figure 5a is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 5a, the embodiment of the present disclosure relates to a communication method, which is used in a communication system 100. The method includes one of the following steps:

[0293] Step S5101: Based on the first information, the core network device sends a first message to the access network device.

[0294] In some embodiments, the first information is used to indicate: paging terminal failure and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal receiving environment.

[0295] The optional implementation of step S5101 can refer to the optional implementation of step S2102 in Figure 2a and other related parts in the embodiment involved in Figure 2a, and will not be repeated here.

[0296] In some embodiments, the above method may include the methods of the above-mentioned communication system side, core network equipment, terminal, etc. embodiments, which will not be repeated here.

[0297] In order to better understand the embodiments of the present disclosure, some exemplary embodiments are further described below:

[0298] In some embodiments, the core network function determines that paging the UE fails, and determines to enable robust notification based on at least one of user subscription information and operator configuration policy.

[0299] In some embodiments, a robust notification timer is set on the AMF. The timer duration is greater than T3513, for example, several times longer than T3513. The timer is started when the AMF initiates the first paging. If the timer expires and the core network function still has not received a response message to the paging, it determines that robust notification is enabled. If the paging is successful, the timer is reset.

[0300] In some embodiments, a counter count is set on the AMF, and its initial value can be set to an integer number. When the AMF initiates paging and paging fails once, the counter is reduced by 1. When the counter value is 0, the core network function determines to enable robust notification.

[0301] In some embodiments, when configuration T3513 expires and no paging response is received, the core network function determines to enable robust notification, that is, when the core network function continues to send paging messages, it also sends robust notification.

[0302] In some embodiments, enabling robust notification is determined based on a received indication of paging failure (or an indication to enable robust notification). The indication of paging failure may be sent by the gNB.

[0303] In some embodiments, when determining to enable robust notification, the core network element also needs to combine at least one of the following information:

[0304] Determining the need to initiate a robust notification based on a subscription service (e.g., emergency call) included in the user subscription information;

[0305] Determine whether the user subscription information includes satellite access (for example, access type=NR(LEO)NR(meo)). If the user subscription information includes satellite access, initiate a robust notification.

[0306] Based on the operator's configuration policy, for example, to indicate the need to initiate a robust notification for a specific user in a specified area

[0307] In some embodiments, the core network function initiates a robust notification to the gNB.

[0308] In some embodiments, the robust notification may be a separate message that triggers the gNB to initiate a robust notification alert to the UE. In this case, the robust notification message includes the UE identifier, UE location information, etc. The robust notification message may be sent simultaneously with the paging message.

[0309] In some embodiments, the robust notification may be an enhancement of the paging message, i.e., the robust notification indication is carried in the paging message to trigger the gNB to initiate a robust notification alert to the UE.

[0310] Example 1:

[0311] A communication system is provided. As shown in FIG6a , an embodiment of the present disclosure relates to a communication method, the method comprising:

[0312] Step S6101: Execute the registration process. The UE uses satellite access to complete the registration process.

[0313] Step S6102: includes step S6102a and step S6102b;

[0314] Step S6102a: Start T3513;

[0315] Step S6102b: Start the robust notification timer or start the counter;

[0316] In some embodiments, the AMF receives a trigger of a paging message (for example, receiving an emergency call service initiated by the network, which requires triggering a paging message). The AMF starts the T3513 timer and simultaneously starts the robust notification timer or paging counter (whose value is set to 4, for example, and the counter is increased by 1 if paging fails once).

[0317] Step S6103: Send a paging message. The AMF sends a paging message to the gNB, and the gNB sends a paging message to the UE.

[0318] Step S6104: Determine that the paging has failed. If T3513 expires and the AMF has not received a paging response message, the AMF determines that the paging has failed. If the AMF has started a paging counter, the counter value is incremented by 1.

[0319] Step S6105: AMF restarts T3513.

[0320] Step S6106: Send a paging message. The AMF sends a paging message to the gNB, and the gNB sends a paging message to the UE.

[0321] Step S6107: Determine that the paging has failed. If T3513 expires and the AMF has not received a paging response message, the AMF determines that the paging has failed. If the AMF has started a paging counter, the counter value is incremented by 1.

[0322] Step S6108: The robust notification timer expires or the counter is 0.

[0323] In some embodiments, if the AMF starts a robust notification timer and the timer expires without the AMF receiving a paging response message, or if the AMF enables a paging counter and the counter reaches 5 without the AMF receiving a paging response message, the AMF determines that paging has failed. Combined with user subscription information or operator policy, for example, if the service triggering paging is an emergency service for which the user has subscribed, or if operator policy indicates that enhanced paging is required for emergency services when paging fails, the AMF determines to initiate robust notification for the UE.

[0324] Step S6109: includes step S6109a and step S6109b.

[0325] Step S6109a: Send a robust notification message.

[0326] Step S6109b: Send a Paging (robust notification) message.

[0327] In some embodiments, the AMF sends a robust notification message to the gNB, including the UE ID, UE location information, etc., to instruct the gNB to initiate a robust notification alert and page the UE. Alternatively, the AMF sends a paging message to the gNB, where the paging message includes a robust notification indication. Based on the indication, the gNB initiates a robust notification alert and pages the UE.

[0328] In the above steps, if the AMF receives a paging response from the UE while the robust notification timer / paging counter is running, the robust notification timer / paging counter stops working and is reset to the initial value.

[0329] Example 2:

[0330] A communication system is provided. As shown in FIG6b , an embodiment of the present disclosure relates to a communication method, the method comprising:

[0331] Step S6201: Execute the registration process. The UE uses satellite access to complete the registration process.

[0332] Step S6202: The AMF starts the T3513 timer. The AMF receives a trigger from a paging message (for example, an emergency call service initiated by the network needs to be triggered by a paging message). The AMF starts the T3513 timer.

[0333] Step S6203: Send paging. The AMF sends a paging message to the gNB, and the gNB sends a paging message to the UE.

[0334] Step S6204: includes step S6204a and step S6204b.

[0335] Step S6204a: Determine that paging fails;

[0336] Step S6204b: Determine to enable robust notification.

[0337] In some embodiments, when T3513 expires and the AMF still has not received a paging response message, the AMF determines that the paging has failed and decides to enable robust notification. Alternatively, the AMF receives an indication to enable robust notification, for example, based on configuration, after several paging failures, the gNB sends an indication to the AMF to enable robust notification. Based on the indication, the AMF decides to enable robust notification.

[0338] In some embodiments, in the process of deciding to enable robust notification, the AMF also needs to combine user subscription information or operator policy. For example, the service that triggers paging happens to be an emergency service subscribed by the user, or the operator policy indicates that paging enhancement needs to be started for emergency services when paging fails. In this case, the AMF determines to start robust notification for the UE.

[0339] Step S6205: The AMF sends a robust notification message to the gNB, including the UE ID, UE location information, etc., instructing the gNB to start a robust notification alert and page the UE.

[0340] Step S6206: includes step S6206a and step S6206b.

[0341] Step S6206a: Start T3513;

[0342] Step S6206b: Send a paging message.

[0343] In some embodiments, the AMF may also decide to continue sending paging messages to page the UE at the same time, that is, the AMF restarts T3513, the AMF sends a paging message to the gNB, and the gNB sends a paging message to the UE.

[0344] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0345] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0346] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0347] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0348] Figure 7a is a schematic structural diagram of the core network device 7100 proposed in an embodiment of the present disclosure. As shown in Figure 7a, the core network device 7100 may include: at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the transceiver module is used to send and receive information. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the core network device in any of the above methods, which will not be repeated here. Optionally, the processing module is used to perform at least one of the other steps performed by the first terminal in any of the above methods, which will not be repeated here.

[0349] Figure 7b is a schematic diagram of the structure of the access network device 7200 proposed in an embodiment of the present disclosure. As shown in Figure 7b, the access network device 7200 may include: at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the above-mentioned transceiver module is used to send and receive information. Optionally, the above-mentioned transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the access network device in any of the above methods, which will not be repeated here. In some embodiments, the transceiver module may include a sending module and / or a receiving module, and the sending module and the receiving module may be separate or integrated together. Optionally, the transceiver module can be interchangeable with the transceiver.

[0350] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0351] Figure 8a is a schematic diagram of the structure of a communication device 9100 proposed in an embodiment of the present disclosure. Communication device 9100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 9100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0352] As shown in Figure 8a, the communication device 9100 includes one or more processors 9101. Processor 9101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The communication device 9100 is used to perform any of the above methods.

[0353] In some embodiments, the communication device 9100 further includes one or more memories 9102 for storing instructions. Optionally, all or part of the memories 9102 may be located outside the communication device 9100.

[0354] In some embodiments, the communication device 9100 further includes one or more transceivers 9103. When the communication device 9100 includes one or more transceivers 9103, the transceiver 9103 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 9101 performs at least one of the other steps.

[0355] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0356] In some embodiments, the communication device 9100 may include one or more interface circuits 9104. Optionally, the interface circuit 9104 is connected to the memory 9102. The interface circuit 9104 may be configured to receive signals from the memory 9102 or other devices, and may be configured to send signals to the memory 9102 or other devices. For example, the interface circuit 9104 may read instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0357] The communication device 9100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG. 8a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0358] FIG8b is a schematic diagram of the structure of the chip 9200 proposed in an embodiment of the present disclosure. If the communication device 9100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 9200 shown in FIG8b, but the present disclosure is not limited thereto.

[0359] The chip 9200 includes one or more processors 9201 , and the chip 9200 is configured to execute any of the above methods.

[0360] In some embodiments, the chip 9200 further includes one or more interface circuits 9202. Optionally, the interface circuit 9202 is connected to the memory 9203. The interface circuit 9202 can be used to receive signals from the memory 9203 or other devices, and can be used to send signals to the memory 9203 or other devices. For example, the interface circuit 9202 can read instructions stored in the memory 9203 and send the instructions to the processor 9201.

[0361] In some embodiments, the interface circuit 9202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S3101, but not limited thereto), and the processor 9201 executes at least one of the other steps.

[0362] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0363] In some embodiments, the chip 9200 further includes one or more memories 9203 for storing instructions. Alternatively, all or part of the memories 9203 may be located outside the chip 9200.

[0364] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 9100, causes the communication device 9100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0365] The present disclosure also provides a program product, which, when executed by the communication device 9100, enables the communication device 9100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0366] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that, The method is executed by a core network device, and the method includes: Based on first information, sending a first message to an access network device; Wherein, the first information is used to indicate: failure to page a terminal and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal reception environment.

2. The method according to claim 1, wherein The first message is not a paging message; the first message includes second information, and the second information includes at least one of the following: an identifier of the terminal; a location of the terminal.

3. The method according to claim 2, wherein The first message and the paging message are sent simultaneously.

4. The method according to claim 1, characterized in that, The first message is a paging message, the first message includes second information and third information, the second information includes at least one of the following: an identifier of the terminal; a location of the terminal; the third information is used to trigger the access network device to send a second message to the terminal.

5. The method according to claim 1, characterized in that The sending the first message to the access network device based on the first information includes: Determining that a response message for paging the terminal has not been received within a first time period, and sending the first message to the access network device.

6. The method according to claim 5, characterized in that, The method further includes: Determining to send a paging message and starting a first timer; The determining that a response message for paging the terminal has not been received within a first time period and sending the first message to the access network device includes: Determining that the first timer has timed out and a response message for paging the terminal has not been received, and sending the first message to the access network device.

7. The method according to claim 6, wherein A timing duration of the first timer is greater than a timing duration of a second timer, and the second timer is a paging waiting timer for paging.

8. The method according to claim 7, characterized in that, The method further includes: Determining that the second timer has timed out and a response message for paging the terminal has not been received, and determining that paging the terminal this time has failed; Starting a next paging for the terminal within the timing duration of the first timer.

9. The method according to claim 6, wherein The method further includes: Determining that the response message has been received within the timing duration of the first timer, and resetting the first timer.

10. The method according to claim 5, characterized in that, The method further includes: Starting a first counter, and the first counter counts based on the number of paging failures; The determining that a response message for paging the terminal has not been received within a first time period and sending the first message to the access network device includes: Determining that the first counter has reached its full count and a response message for paging the terminal has not been received, and sending the first message to the access network device.

11. The method according to claim 5, characterized in that, The determining that a response message for paging the terminal has not been received within a first time period and sending the first message to the access network device includes: Determining that the second timer has timed out and a response message for paging the terminal has not been received, and sending the first message to the access network device; Wherein, the second timer is a paging waiting timer for paging.

12. The method according to claim 1, wherein The method further includes: Receiving fourth information sent by the access network device; Wherein, the fourth information is used to indicate: failure to page the terminal and / or requesting the core network device to send the first message.

13. The method according to claim 12, wherein The method further includes: Determining the first information based on the fourth information.

14. The method according to claim 1, wherein Sending a first message to an access network device based on the first information includes: Sending a first message to the access network device based on the first information and fifth information; wherein the fifth information includes at least one of the following: user subscription information; operator configuration policy information.

15. The method according to claim 14, wherein Sending the first message to the access network device based on the first information and fifth information includes at least one of the following: Determining that paging the terminal fails and / or the access network device requests to send the first message, and determining that the user subscription information includes information indicating that the terminal supports satellite access, and sending the first message to the access network device; Determining that paging the terminal fails and / or the access network device requests to send the first message, and determining that the operator configuration policy information indicates to instruct the terminal to change the signal reception environment when paging fails, and sending the first message to the access device.

16. A communication method, characterized in that, The method is executed by an access network device, and the method includes: Receiving a first message sent by a core network device; wherein the first message is sent based on first information, and the first information is used to indicate: paging the terminal fails and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal reception environment.

17. The method according to claim 16, wherein The first message is not a paging message; the first message includes second information, and the second information includes at least one of the following: an identifier of the terminal; a location of the terminal.

18. The method according to claim 17, wherein The first message and the paging message are sent simultaneously.

19. The method according to claim 16, wherein The first message is a paging message, the first message includes second information and third information, the second information includes at least one of the following: an identifier of the terminal; a location of the terminal; the third information is used to trigger the access network device to send a second message to the terminal.

20. The method according to claim 16, wherein The method further includes: Determining that paging the terminal fails and / or requesting the core network device to send the first message, and sending fourth information to the core network device; wherein the fourth information is used to indicate that paging the terminal fails and / or requesting the core network device to send the first message.

21. A communication method, characterized in that, The method includes: Based on first information, a core network device sends a first message to an access network device; wherein the first information is used to indicate: paging the terminal fails and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal reception environment.

22. A core network device, characterized in that, The core network device includes: A transceiver module, configured to: Based on first information, send a first message to an access network device; wherein the first information is used to indicate: paging the terminal fails and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal reception environment.

23. An access network device, characterized in that, The access network device includes: A transceiver module, configured to: Receive a first message sent by a core network device; Wherein, the first message is sent based on first information, and the first information is used to indicate: failure to page a terminal and / or the access network device requests the core network device to send the first message; the first message is used to trigger the access network device to send a second message to the terminal, and the second message is used to instruct the terminal to change the signal reception environment.

24. A communication system, characterized in that, The communication system includes a core network device and an access network device; the core network device is configured to implement the method according to any one of claims 1 to 15, and the access network device is configured to implement the method according to any one of claims 16 to 20.

25. A core network device, characterized in that, The core network device includes: One or more processors; Wherein, the core network device is used to execute the method according to any one of claims 1 to 15.

26. An access network device, characterized in that, The access network device includes: One or more processors; Wherein, the access network device is used to execute the method according to any one of claims 16 to 20.

27. A storage medium, characterized in that, The storage medium stores instructions, and when the instructions run on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 15 and claims 16 to 20.

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