Communication methods, terminals, access network devices, communication system and storage medium

Abstract

The embodiments of the present disclosure relate to communication methods, terminals, access network devices, a communication system and a storage medium. A communication method can be executed by a first terminal. The method comprises: receiving first information, which is used for indicating at least one of the following: a feeder link being disconnected, time information of the feeder link being disconnected, an access network device disabling a store-and-forward function, time information of the access network device disabling the store-and-forward function, the access network device not storing data to be forwarded, and time information of the access network device not storing the data to be forwarded, wherein the access network device is deployed on a satellite. In the present disclosure, the situation of the access network device can be determined by receiving the first information, and monitoring downlink information can be stopped on this basis, thereby reducing the power consumption of a terminal.

Description

Communication method, terminal, access network equipment, 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, a terminal, an access network device, a communication system, and a storage medium. Background Art

[0002] The evolution of telecommunications network technology has seen the integration of non-terrestrial network (NTN) technologies and support for satellite access. This allows terminals to access the core network and conduct services via satellite access networks. However, due to issues such as insufficient satellite deployments and limited coverage, satellite access networks may not provide continuous satellite connectivity. This discontinuous satellite connection can include intermittent connections between satellites and terminals, or between satellites and ground stations.

[0003] Summary of the Invention

[0004] For the store-and-forward function of the satellite communication system, when the feeder link between the satellite and the ground station is disconnected or the satellite has no data to forward, the terminal does not need to receive downlink messages, but will still monitor the downlink channel or downlink messages, which increases the terminal power consumption and is not conducive to terminal power saving.

[0005] The embodiments of the present disclosure provide a communication method, a terminal, 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 proposed, which is executed by a first terminal, and the method includes: receiving first information, wherein the first information is used to indicate at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device turning off storage and forwarding function; time information of the access network device turning off storage and forwarding function; the access network device not storing data to be forwarded; time information of the access network device not storing data to be forwarded; wherein, the access network device is deployed on a satellite.

[0007] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a first terminal. The method includes: stopping monitoring downlink information according to received first information.

[0008] According to a third aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by an access network device, and the access network device is deployed on a satellite. The method includes: sending first information, and the first information is used to indicate at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device turning off storage and forwarding function; time information of the access network device turning off storage and forwarding function; the access network device not storing data to be forwarded; time information of the access network device not storing data to be forwarded.

[0009] According to a fourth aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by an access network device deployed on a satellite. The method includes: sending first information, which is used by the terminal to determine to stop monitoring downlink information.

[0010] According to the fifth aspect of an embodiment of the present disclosure, a terminal is proposed, including: a transceiver module, configured to receive first information, wherein the first information is used to indicate at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device turning off storage and forwarding function; time information of the access network device turning off storage and forwarding function; the access network device not storing data to be forwarded; time information of the access network device not storing data to be forwarded; wherein, the access network device is deployed on a satellite.

[0011] According to a sixth aspect of an embodiment of the present disclosure, a terminal is proposed, including: a transceiver module, configured to stop monitoring downlink information based on received first information.

[0012] According to the seventh aspect of an embodiment of the present disclosure, an access network device is proposed, including: a transceiver module, configured to send first information, wherein the first information is used to indicate at least one of the following: a feeder link is disconnected; time information of the feeder link being disconnected; the access network device turning off a storage and forwarding function; time information of the access network device turning off a storage and forwarding function; the access network device not storing data to be forwarded; time information of the access network device not storing data to be forwarded.

[0013] According to an eighth aspect of an embodiment of the present disclosure, an access network device is proposed, including: a transceiver module, configured to send first information, where the first information is used by a terminal to determine to stop monitoring downlink information.

[0014] According to a ninth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is configured to execute the communication method of the first aspect or the second aspect.

[0015] According to a tenth aspect of an embodiment of the present disclosure, an access network device is proposed, comprising: one or more processors; wherein the access network device is used to execute the communication method of the third aspect or the fourth aspect.

[0016] According to the eleventh aspect of an embodiment of the present disclosure, a communication system is proposed, comprising an access network device and a terminal, wherein the terminal is configured to implement a communication method as in the first aspect or the second aspect, and the access network device is configured to implement a communication method as in the third aspect or the fourth aspect.

[0017] According to the twelfth aspect of the embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on an access network device or terminal, the access network device or terminal executes a communication method as described in any one of the first, second, third and fourth aspects.

[0018] According to the thirteenth aspect of the embodiments of the present disclosure, a computer program product is proposed, comprising a computer program, which, when executed by a processor, implements the communication method described in any one of the first, second, third and fourth aspects.

[0019] According to the fourteenth aspect of the embodiments of the present disclosure, a computer program is proposed, which includes codes, and when the codes are executed by a processor, they implement the communication method described in any one of the first aspect, the second aspect, the third aspect and the fourth aspect.

[0020] According to a fifteenth aspect of the embodiments of the present disclosure, a chip or chip system is provided. The chip or chip system includes a processing circuit. The processing circuit is configured to execute the communication method as described in any one of the first, second, third, and fourth aspects.

[0021] According to the technical solution provided by the embodiment of the present disclosure, the terminal can determine at least one of the feeder link connection status of the access network device, the shutdown status of the storage and forwarding function of the access network device, and the storage status of the data to be forwarded by the access network device through the received first information. Based on this, the terminal can stop monitoring the downlink information to save the power consumption of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] FIG1A is a schematic diagram showing an architecture of a communication system according to an embodiment of the present disclosure.

[0024] FIG1B is a schematic diagram of a satellite communication system architecture based on transparent transmission payload according to an embodiment of the present disclosure.

[0025] FIG1C is a schematic diagram of a satellite communication system based on regenerative payload according to an embodiment of the present disclosure.

[0026] FIG2A is a schematic diagram illustrating normal or default satellite operation according to an embodiment of the present disclosure.

[0027] FIG2B is a schematic diagram illustrating the operation of a store and forward satellite according to an embodiment of the present disclosure.

[0028] FIG2C is a schematic diagram showing a flow of a terminal in an idle state receiving downlink data according to an embodiment of the present disclosure.

[0029] 3A to 3B are exemplary interaction diagrams illustrating a communication method according to an embodiment of the present disclosure.

[0030] 4A to 4D are flowcharts illustrating a method for executing communication on a terminal side according to an embodiment of the present disclosure.

[0031] 4E to 4G are flowcharts illustrating a communication method executed on an access network device side according to an embodiment of the present disclosure.

[0032] FIG5A is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure.

[0033] FIG5B is a schematic structural diagram of an access network device proposed in an embodiment of the present disclosure.

[0034] FIG6 is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0035] FIG7 is a schematic structural diagram of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] The embodiments of the present disclosure provide a communication method, a terminal, an access network device, a communication system, and a storage medium.

[0037] In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a first terminal, and the method includes: receiving first information, where the first information is used to indicate at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device turning off storage and forwarding function; time information of access network device turning off storage and forwarding function; access network device not storing data to be forwarded; time information of access network device not storing data to be forwarded; wherein, the access network device is deployed on a satellite.

[0038] In an embodiment of the present disclosure, the terminal can determine at least one of the feeder link connection status of the access network device, the shutdown status of the storage and forwarding function of the access network device, and the storage status of the data to be forwarded by the access network device through the received first information. Based on this, the terminal can choose to stop monitoring downlink information to save the terminal's power consumption.

[0039] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: stopping monitoring downlink information according to the received first information.

[0040] In the embodiment of the present disclosure, the first terminal stops monitoring downlink information based on the received first information, which saves terminal power consumption and is beneficial to power saving of the terminal.

[0041] In combination with some embodiments of the first aspect, in some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel; and stopping monitoring paging messages.

[0042] In an embodiment of the present disclosure, when the first terminal is in an RRC connected state, the first terminal may stop monitoring the downlink channel. When the first terminal is in an RRC unconnected state, the first terminal may stop monitoring the paging message. This facilitates terminals in different states to perform different stop monitoring operations.

[0043] In combination with some embodiments of the first aspect, in some embodiments, stopping monitoring downlink information according to the received first information includes at least one of the following: stopping monitoring downlink information when the first information indicates that the feeder link is disconnected; stopping monitoring downlink information within the duration indicated by the time information when the first information indicates the time information of the feeder link disconnection; stopping monitoring downlink information when the first information indicates that the access network device turns off the storage and forwarding function; stopping monitoring downlink information within the duration indicated by the time information when the first information indicates the time information of the access network device turning off the storage and forwarding function; stopping monitoring downlink information when the first information indicates that the access network device does not store the data to be forwarded; stopping monitoring downlink information within the duration indicated by the time information when the first information indicates that the access network device does not store the time information of the data to be forwarded; wherein, the access network device is deployed on the satellite.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the first information includes a terminal identifier; the terminal identifier is used to indicate a terminal associated with data stored in an access network device; and stopping monitoring downlink information based on the received first information includes: stopping monitoring downlink information when the terminals indicated by the terminal identifier do not include the first terminal.

[0045] In the embodiment of the present disclosure, a specific terminal can be caused to stop monitoring downlink information through the terminal identification, thereby achieving terminal power saving management in a more refined manner.

[0046] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: when the terminals indicated by the terminal identifier include the first terminal, keeping monitoring the downlink information.

[0047] In the embodiment of the present disclosure, a specific terminal can be enabled to keep monitoring downlink information through the terminal identification, thereby achieving terminal power saving management in a more refined manner.

[0048] In combination with some embodiments of the first aspect, in some embodiments, the first information includes a terminal identifier; the terminal identifier is used to indicate a terminal that is not related to the data stored in the access network device; stopping monitoring downlink information based on the received first information includes: stopping monitoring downlink information when the terminals indicated by the terminal identifier include the first terminal.

[0049] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: when the terminals indicated by the terminal identifier do not include the first terminal, keeping monitoring downlink information.

[0050] In combination with some embodiments of the first aspect, in some embodiments, after stopping monitoring downlink information, the method also includes: obtaining a system message when the first terminal needs to send uplink data; or obtaining a system message when the first terminal in a non-connected state requests to establish an RRC connection.

[0051] In combination with some embodiments of the first aspect, in some embodiments, the first information is carried in a system message.

[0052] In a second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a first terminal. The method includes: stopping monitoring downlink information according to received first information.

[0053] In combination with some embodiments of the second aspect, in some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel; and stopping monitoring paging messages.

[0054] In combination with some embodiments of the second aspect, in some embodiments, the first information is used to indicate time information when the first terminal stops monitoring downlink information.

[0055] In combination with some embodiments of the second aspect, in some embodiments, the first information is carried in a first RRC message, and the first RRC message is used to request establishment of an RRC connection.

[0056] In combination with some embodiments of the second aspect, in some embodiments, stopping monitoring the downlink information according to the received first information includes: after receiving the first information, stopping monitoring the downlink information within the duration indicated by the time information.

[0057] In combination with some embodiments of the second aspect, in some embodiments, stopping monitoring downlink information based on the received first information includes: sending a second RRC message and stopping monitoring downlink information within the duration indicated by the time information; the second RRC message is used to indicate that the RRC connection between the first terminal and the access network device is established, and the second RRC message is a response message to the first RRC message.

[0058] In combination with some embodiments of the second aspect, in some embodiments, stopping monitoring downlink information within the duration indicated by the time information includes: starting a timer, the duration of the timer is determined according to the time information; and stopping monitoring downlink information when the timer is running.

[0059] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: resuming monitoring of downlink information after the duration indicated by the time information ends.

[0060] In combination with some embodiments of the second aspect, in some embodiments, after the duration indicated by the time information ends, monitoring of downlink information is resumed, including: after the timer expires, monitoring of downlink information is resumed; the duration of the timer is determined based on the time information.

[0061] In a third aspect, an embodiment of the present disclosure proposes a communication method, which is executed by an access network device, and the access network device is deployed on a satellite. The method includes: sending first information, and the first information is used to indicate at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device turning off storage and forwarding function; time information of access network device turning off storage and forwarding function; access network device not storing data to be forwarded; time information of access network device not storing data to be forwarded.

[0062] In combination with some embodiments of the third aspect, in some embodiments, the first information is used by the terminal to determine to stop monitoring downlink information.

[0063] In combination with some embodiments of the third aspect, in some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel; and stopping monitoring paging messages.

[0064] In combination with some embodiments of the third aspect, in some embodiments, the first information includes a terminal identifier; the terminal identifier is used to indicate a terminal associated with data stored in an access network device; when the terminals indicated by the terminal identifier do not include the first terminal, the first information is used to instruct the first terminal to stop monitoring downlink information.

[0065] In combination with some embodiments of the third aspect, in some embodiments, when the terminals indicated by the terminal identifier include the first terminal, the first information is used to instruct the first terminal to keep monitoring downlink information.

[0066] In combination with some embodiments of the third aspect, in some embodiments, the first information includes a terminal identifier; the terminal identifier is used to indicate a terminal that is not related to the data stored in the access network device; when the terminals indicated by the terminal identifier include the first terminal, the first information is used to instruct the first terminal to stop monitoring downlink information.

[0067] In combination with some embodiments of the third aspect, in some embodiments, when the terminals indicated by the terminal identifier do not include the first terminal, the first information is used to instruct the first terminal to keep monitoring downlink information.

[0068] In combination with some embodiments of the third aspect, in some embodiments, the first information is carried in a system message.

[0069] In a fourth aspect, an embodiment of the present disclosure proposes a communication method, which is executed by an access network device deployed on a satellite. The method includes: sending a first message, where the first message is used by the terminal to determine to stop monitoring downlink information.

[0070] In combination with some embodiments of the fourth aspect, in some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel; and stopping monitoring paging messages.

[0071] In combination with some embodiments of the fourth aspect, in some embodiments, the first information is also used by the terminal to determine time information for stopping monitoring downlink information.

[0072] In combination with some embodiments of the fourth aspect, in some embodiments, the first information is carried in a first RRC message, and the first RRC message is used to request establishment of an RRC connection.

[0073] In the fifth aspect, an embodiment of the present disclosure proposes a terminal, including: a transceiver module, configured to receive first information, the first information being used to indicate at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device turning off storage and forwarding function; time information of access network device turning off storage and forwarding function; access network device not storing data to be forwarded; time information of access network device not storing data to be forwarded; wherein, the access network device is deployed on a satellite.

[0074] In combination with some embodiments of the fifth aspect, in some embodiments, the transceiver module is configured to stop monitoring downlink information based on the received first information.

[0075] In combination with some embodiments of the fifth aspect, in some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel; and stopping monitoring paging messages.

[0076] With reference to some embodiments of the fifth aspect, in some embodiments, the first information is used to indicate at least one of the following:

[0077] In combination with some embodiments of the fifth aspect, in some embodiments, the transceiver module is configured to do at least one of the following: when the first information indicates that the feeder link is disconnected, stop monitoring the downlink information; when the first information indicates the time information of the feeder link disconnection, stop monitoring the downlink information within the duration indicated by the time information; when the first information indicates that the access network device turns off the storage and forwarding function, stop monitoring the downlink information; when the first information indicates the time information of the access network device turning off the storage and forwarding function, stop monitoring the downlink information within the duration indicated by the time information; when the first information indicates that the access network device does not store the data to be forwarded, stop monitoring the downlink information; when the first information indicates that the access network device does not store the time information of the data to be forwarded, stop monitoring the downlink information within the duration indicated by the time information; wherein, the access network device is deployed on the satellite.

[0078] In combination with some embodiments of the fifth aspect, in some embodiments, the first information includes a terminal identifier; the terminal identifier is used to indicate a terminal associated with data stored in an access network device; and the transceiver module is configured to stop monitoring downlink information if the terminal indicated by the terminal identifier does not include the first terminal.

[0079] In combination with some embodiments of the fifth aspect, in some embodiments, the transceiver module is configured to keep monitoring downlink information when the terminals indicated by the terminal identifier include the first terminal.

[0080] In combination with some embodiments of the fifth aspect, in some embodiments, the first information includes a terminal identifier; the terminal identifier is used to indicate a terminal that is not related to the data stored in the access network device; the transceiver module is configured to stop monitoring downlink information when the terminals indicated by the terminal identifier include the first terminal.

[0081] In combination with some embodiments of the fifth aspect, in some embodiments, the transceiver module is configured to keep monitoring downlink information when the terminals indicated by the terminal identifier do not include the first terminal.

[0082] In combination with some embodiments of the fifth aspect, in some embodiments, the transceiver module is configured to obtain a system message when the first terminal needs to send uplink data; or to obtain a system message when the first terminal in a non-connected state requests to establish a radio resource control RRC connection.

[0083] In combination with some embodiments of the fifth aspect, in some embodiments, the first information is carried in a system message.

[0084] In a sixth aspect, an embodiment of the present disclosure proposes a terminal, comprising: a transceiver module, configured to stop monitoring downlink information based on received first information.

[0085] In combination with some embodiments of the sixth aspect, in some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel; stopping monitoring paging messages.

[0086] In combination with some embodiments of the sixth aspect, in some embodiments, the first information is used to indicate time information when the first terminal stops monitoring downlink information.

[0087] In combination with some embodiments of the sixth aspect, in some embodiments, the first information is carried in a first RRC message, and the first RRC message is used to request establishment of an RRC connection.

[0088] In combination with some embodiments of the sixth aspect, in some embodiments, the transceiver module is configured to stop monitoring downlink information within the duration indicated by the time information after receiving the first information.

[0089] In combination with some embodiments of the sixth aspect, in some embodiments, the transceiver module is configured to send a second RRC message and stop monitoring downlink information within the duration indicated by the time information; the second RRC message is used to indicate that the RRC connection between the first terminal and the access network device is established, and the second RRC message is a response message to the first RRC message.

[0090] In combination with some embodiments of the sixth aspect, in some embodiments, the transceiver module is configured to start a timer, and the duration of the timer is determined according to time information; when the timer is running, it stops monitoring downlink information.

[0091] In combination with some embodiments of the sixth aspect, in some embodiments, the transceiver module is configured to resume monitoring downlink information after the duration indicated by the time information ends.

[0092] In combination with some embodiments of the sixth aspect, in some embodiments, the transceiver module is configured to resume monitoring downlink information after the timer expires; the duration of the timer is determined based on the time information.

[0093] In the seventh aspect, an embodiment of the present disclosure proposes an access network device, including: a transceiver module is configured to send first information, the first information being used to indicate at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device shutting down storage and forwarding function; time information of access network device shutting down storage and forwarding function; access network device not storing data to be forwarded; time information of access network device not storing data to be forwarded.

[0094] In combination with some embodiments of the seventh aspect, in some embodiments, the first information is used by the terminal to determine to stop monitoring downlink information.

[0095] In combination with some embodiments of the seventh aspect, in some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel; stopping monitoring paging messages.

[0096] In combination with some embodiments of the seventh aspect, in some embodiments, the first information includes a terminal identifier; when the terminals indicated by the terminal identifier include the first terminal, the first information is used to instruct the first terminal to stop monitoring downlink information; or, when the terminals indicated by the terminal identifier do not include the first terminal, the first information is used to instruct the first terminal to stop monitoring downlink information.

[0097] In combination with some embodiments of the seventh aspect, in some embodiments, the first information is carried in a system message.

[0098] In an eighth aspect, an embodiment of the present disclosure proposes an access network device, comprising: a transceiver module configured to send first information, where the first information is used by a terminal to determine to stop monitoring downlink information.

[0099] In combination with some embodiments of the eighth aspect, in some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel; stopping monitoring paging messages.

[0100] In combination with some embodiments of the eighth aspect, in some embodiments, the first information is used by the terminal to determine time information for stopping monitoring downlink information.

[0101] In combination with some embodiments of the eighth aspect, in some embodiments, the first information is carried in a first RRC message, and the first RRC message is used to request establishment of an RRC connection.

[0102] In a ninth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the communication method of the first aspect or the second aspect.

[0103] In a tenth aspect, an embodiment of the present disclosure proposes an access network device, comprising: one or more processors; wherein the access network device is used to execute the communication method of the third aspect or the fourth aspect.

[0104] In the eleventh aspect, an embodiment of the present disclosure proposes a communication system, comprising: a terminal and an access network device; wherein the terminal is configured to execute the method described in the optional implementation manner of the first aspect or the second aspect, and the access network device is configured to execute the method described in the optional implementation manner of the third aspect or the fourth aspect.

[0105] In the twelfth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a terminal or an access network device, the terminal or access network device executes the method described in the optional implementation of the first aspect, the second aspect, the third aspect or the fourth aspect.

[0106] In the thirteenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a terminal or an access network device, the terminal or the access network device executes the method described in the optional implementation manner of the first aspect, the second aspect, the third aspect or the fourth aspect.

[0107] In a fourteenth 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, second, third or fourth aspects.

[0108] In a fifteenth 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, second, third, or fourth aspects above.

[0109] It is understandable that the above-mentioned access network devices, terminals, communication systems, storage media, program products, computer programs, chips, or chip systems 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.

[0110] The embodiments of the present disclosure provide a communication method, a terminal, an access network device, a communication system, and a storage medium. In some embodiments, the terms communication method, information transmission method, information processing method, etc. are interchangeable, and the terms information processing system, communication system, etc. are interchangeable.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when articles such as "a", "an", "the" in English are used in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0115] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0116] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0124] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0125] In some embodiments, the terms "network devices", "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access network 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", "femtocell", "picocell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0126] In some embodiments, the terms "terminal", "terminal device", "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. can be used interchangeably.

[0127] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0128] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0129] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0130] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0131] 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.

[0132] FIG1A is a schematic diagram showing an architecture of a communication system according to an embodiment of the present disclosure.

[0133] As shown in FIG1A , a communication system 100 includes a terminal 101 and an access network device 102 .

[0134] In some embodiments, the terminal 101 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.

[0135] In some embodiments, the access network device 102 is, for example, a node or device that accesses a terminal to a wireless network. The access network device 102 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.

[0136] In some embodiments, the technical solutions of the embodiments of the present disclosure may be applicable to an open radio access network (Open RAN) architecture. In this case, the interfaces between or within access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.

[0137] 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.

[0138] In some embodiments, the access network device may be a single device, or may be multiple devices or a group of devices. The access network device may be virtual or physical. It is understood that the communication system described in the embodiments of the present disclosure is intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. A person skilled in the art will appreciate that, with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are equally applicable to similar technical problems.

[0139] 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 part of the entities shown in FIG1A , or may include other entities outside of 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.

[0140] 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).

[0141] The various embodiments of the present disclosure may be applicable to non-terrestrial networks (NTNs), including networks or network segments that utilize transmission equipment relay nodes or base stations carried on airborne or space-based vehicles, and any network involving non-terrestrial flying objects. For example, NTNs may include satellite communication networks and high altitude platform systems (HAPs). In the embodiments of the present disclosure, a satellite communication NTN is used as an example for illustration.

[0142] With the development of communication technology, satellite communication technology is considered an important aspect of the future development of wireless communication technology. Communication systems that support satellite access technology (such as 4G and 5G networks) can also be called satellite communication networks. In this communication network, terminals can access the core network (such as EPC and 5GC) through the satellite access network and conduct business. However, due to the insufficient number of satellite deployments, satellite access networks may have problems such as limited coverage. Therefore, satellites may not be able to provide continuous connection services. This discontinuous satellite connection includes interruptions in the service connection between the satellite and the terminal or the feeder connection between the satellite and the ground station.

[0143] In some embodiments, the connection between the satellite and the terminal may also be referred to as a service link, and the connection between the satellite and the ground station may also be referred to as a feeder link.

[0144] In some embodiments, the satellite communication network may have two different architectures: a satellite communication network architecture based on transparent payloads (i.e., transparent mode) and a satellite communication network architecture based on regenerative payloads (i.e., regenerative mode).

[0145] In some embodiments, as shown in FIG1B , FIG1B is a schematic diagram illustrating a satellite communication system architecture based on transparent transmission payloads according to an embodiment of the present disclosure. In this satellite communication system architecture, the core network is described as the EPC. Of course, the core network can also be other evolved versions of the core network, and this is not specifically limited in the present embodiment. In transparent transmission mode, eNB 20 is deployed on the ground, and satellite 10 performs the radio frequency functions of eNB 20.

[0146] In some embodiments, as shown in Figure 1C, a schematic diagram of a satellite communication system architecture based on a regenerative payload according to an embodiment of the present disclosure is provided. In this satellite communication system architecture, the core network is still used as the EPC. Of course, the core network can also be other evolved versions of the core network, which is not specifically limited in this embodiment of the present disclosure. In regenerative mode, the eNB 20 is deployed on the satellite 10. In this case, the eNB can be referred to as a satellite-based eNB.

[0147] In some embodiments, handling discontinuous coverage of the service link when the satellite is in transparent transmission mode may include enhancing terminal mobility and power saving techniques when the satellite provides discontinuous coverage. However, when the satellite is in regeneration mode, handling discontinuous coverage of the feeder link has not yet been technically clarified to support terminal services.

[0148] In some embodiments, to provide delay-tolerant communication services, satellite communication systems support store and forward (S&F) functionality. Store and forward (S&F) operation is an operating mode of a communication system with satellite access (i.e., a satellite communication system). When satellite connectivity is intermittent or temporarily unavailable, the communication system can provide a certain level of service (e.g., storing and forwarding data). For example, this can provide communication services to terminals within satellite coverage without requiring simultaneous connection to a ground segment feeder link.

[0149] In some embodiments, the operation mode of the satellite communication system based on the transparent mode or the regeneration mode described above can be described as normal or default satellite operation.

[0150] In some embodiments, as shown in FIG2A , FIG2A is a schematic diagram illustrating normal or default satellite operation according to an embodiment of the present disclosure. In the "normal / default satellite operation" mode, the interaction of signaling and data transmission between the terminal and the remote terrestrial network (TN) via the satellite requires that the service link and the feeder link are simultaneously active. Therefore, when the terminal interacts with the satellite via the service link, a continuous, end-to-end connection path exists between the terminal, the satellite, and the terrestrial network.

[0151] In some embodiments, as shown in Figure 2B, Figure 2B is a schematic diagram of the storage and forwarding satellite operation shown in accordance with an embodiment of the present disclosure. Compared with above-mentioned normal satellite operation, under the storage and forwarding satellite operation, the interaction of end-to-end signaling or data transmission is processed into a combination of two steps that are not performed simultaneously (such as steps A and B in Figure 2B). In step A, signaling or data transmission is interactively performed between the terminal and the satellite. At this time, the satellite may not be connected to the ground network (that is, the satellite can use the service link when there is no available feeder link connection). In step B, a connection (i.e., feeder link) is established between the satellite and the ground network, so that communication can be carried out between the satellite and the ground network. Therefore, the satellite moves from being connected to the terminal in step A to being connected to the ground network in step B.

[0152] In some embodiments, support for store and forward satellite operations is particularly applicable to providing delay-tolerant or non-real-time IoT satellite services using non-geostationary satellite orbit (NGSO) satellites.

[0153] For the regenerative architecture of satellite access, eNB functions are deployed on the satellite. Even in the case of discontinuous satellite connection, delay-tolerant services can still be carried out. This requires the satellite to support data storage and forwarding functions so that when the satellite connection is interrupted, data can be stored on the satellite and forwarded when the satellite connection is restored.

[0154] In some embodiments, based on the satellite communication system, the terminal sending uplink data includes the following steps: (1) The terminal sends the uplink data to the satellite. (2) If there is no connection between the satellite and the ground station, for example, there is no feeder link, the satellite stores the uplink data. (3) If there is a connection between the satellite and the ground station, for example, there is a feeder link, the satellite forwards the uplink data to the ground station. (4) The ground station receives the uplink data.

[0155] In some embodiments, based on the above-mentioned satellite communication system, the terminal receives downlink data including the following steps: (1) The ground station prepares to send the downlink data to the terminal. If there is no connection between the ground station and the satellite, for example, there is no feeder link, the ground station caches the downlink data. (2) If the ground station establishes a connection with the satellite, the ground station sends the downlink data to the satellite. (3) If a connection is established between the satellite and the terminal, the satellite sends the downlink data to the terminal. (4) If there is no connection between the satellite and the terminal, the satellite stores the downlink data until a connection is established between the satellite and the terminal, and then sends the downlink data to the terminal.

[0156] In some embodiments, for a terminal in a radio resource control (RRC) idle state, steps for mobile terminated-early data transmission (MT-EDT) optimized for the control plane cellular Internet of Things (CIoT) evolved packet system (EPS) can be used to receive downlink data. As shown in FIG2C , receiving downlink data includes the following steps: (1) When downlink data arrives, the serving gateway (S-GW) can send DL data size information to the mobility management entity (MME) for the MME to consider MT-EDT. (2) The MME includes the DL data size information in the S1-AP paging message to assist the eNodeB in triggering MT-EDT. (3) If the data can fit into a single downlink transmission according to the terminal category included in the terminal radio capabilities for paging provided in the S1-AP paging message, the eNB includes an MT-EDT indication in the paging message for the terminal. (4) The terminal initiates the mobile originated-early data transmission (MO-EDT) process for control plane CIoT EPS optimization.

[0157] In some embodiments, a terminal in the RRC idle state may also adopt a conventional manner of receiving downlink data, for example, there is no MT-EDT indication in the paging message.

[0158] In some embodiments, for a terminal in an RRC connected state, the terminal may confirm whether it needs to receive downlink data by monitoring a downlink channel (eg, a physical downlink control channel).

[0159] In the embodiment of the present disclosure, for the storage and forwarding function of the satellite communication system, when the feeder link connection between the satellite and the ground station is disconnected or the satellite has no data to forward, the terminal does not need to receive downlink messages, but will still monitor the downlink channel or downlink messages, which increases the power consumption of the terminal and is not conducive to power saving of the terminal.

[0160] In the embodiments of the present disclosure, the access network may be an evolved UMTS terrestrial radio access network (E-UTRAN). The eNB in ​​the E-UTRAN is deployed on a satellite. In one example, the access network device is a satellite-borne eNB.

[0161] In some embodiments, the eNB supports store and forward satellite operations.

[0162] In some embodiments, the eNB supports storage and forward satellite operations, which means that the eNB has the ability to provide storage and forward satellite operations and the capacity to perform storage and forward satellite operations. In other words, the eNB supports storage and forward satellite operations and also has the storage resources required for storage and forward satellite operations.

[0163] In the embodiments of the present disclosure, the access network may also be a next-generation radio access network (NG-RAN) (also referred to as a 5G access network). The gNBs in the NG-RAN are deployed on satellites. In one example, the access network equipment is a satellite-based gNB.

[0164] In some embodiments, the gNB supports store and forward satellite operations.

[0165] In some embodiments, the gNB supports store-and-forward satellite operations, which means that the gNB has the capability to provide store-and-forward satellite operations and the capacity to perform store-and-forward satellite operations. In other words, the gNB supports store-and-forward satellite operations and has the storage resources required for store-and-forward satellite operations.

[0166] FIG3A is a first interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the present disclosure embodiment relates to a communication method. Executed by a communication system 100, the communication method includes steps S3101 to S3103.

[0167] In step S3101, the access network device sends a system message.

[0168] In some embodiments, the terminal receives a system message.

[0169] In some embodiments, the system message carries first information, and the first information is used by the terminal to determine at least one of the following: the feeder link connection status of the access network device, the shutdown status of the storage and forwarding function of the access network device, and the storage status of the data to be forwarded of the access network device.

[0170] In some embodiments, the first information is used to indicate at least one of the following: feeder link disconnection, time information of feeder link disconnection, access network device shutting down storage and forwarding function, time information of access network device shutting down storage and forwarding function, access network device not storing data to be forwarded, and time information of access network device not storing data to be forwarded.

[0171] In some embodiments, the first information may include first indication information, and the first indication information is used to indicate at least one of the following: feeder link disconnection, time information of feeder link disconnection, access network device shutting down storage and forwarding function, time information of access network device shutting down storage and forwarding function, access network device not storing data to be forwarded, and time information of access network device not storing data to be forwarded.

[0172] In some embodiments, the first information is also used by the terminal to determine whether to stop monitoring the downlink information or to keep monitoring the downlink information.

[0173] In some embodiments, when the first information indicates that the feeder link is disconnected, the terminal determines to stop monitoring the downlink information.

[0174] In some embodiments, when the first information indicates time information of disconnection of the feeder link, the terminal determines to stop monitoring the downlink information.

[0175] In some embodiments, when the first information indicates feeder link disconnection and the time information of the feeder link disconnection, the terminal can determine the duration of the disconnection based on the time information, and determine to stop monitoring downlink information during the duration. In some embodiments, the terminal can also determine to resume monitoring downlink information after the duration expires.

[0176] In some embodiments, the time information of the feeder link disconnection may include at least one of the following: the start time of the feeder link disconnection, the end time of the feeder link disconnection, and the duration of the feeder link disconnection.

[0177] In one example, the time information includes: the start time of the feeder link disconnection. In one example, the time information includes: the start time and end time of the feeder link disconnection. In one example, the time information includes: the start time and duration of the feeder link disconnection. In one example, the time information includes: the end time of the feeder link disconnection. In one example, the time information includes: the duration of the feeder link disconnection. In one example, the time information includes: the duration and end time of the feeder link disconnection.

[0178] In some embodiments, when the first information indicates that the access network device turns off the storage and forwarding function, the terminal determines to stop monitoring the downlink information.

[0179] In some embodiments, when the first information indicates the time information of the access network device turning off the storage and forwarding function, the terminal determines to stop monitoring the downlink information.

[0180] In some embodiments, when the first information indicates that the access network device has disabled the storage and forwarding function and the time when the access network device disabled the storage and forwarding function, the terminal can determine the duration of the disabled storage and forwarding function based on the time information, and determine to stop monitoring downlink information during the duration. In some embodiments, the terminal can also determine to resume monitoring downlink information after the duration expires.

[0181] In some embodiments, the time information of the access network device shutting down the storage and forwarding function includes at least one of the following: the starting time when the access network device shuts down the storage and forwarding function, the duration of the access network device shutting down the storage and forwarding function, and the ending time when the access network device shuts down the storage and forwarding function.

[0182] In one example, the time information includes: the start time when the access network device disables the store and forward function. In one example, the time information includes: the start time and end time when the access network device disables the store and forward function. In one example, the time information includes: the start time and duration of the access network device's shutdown of the store and forward function. In one example, the time information includes: the end time when the access network device disables the store and forward function. In one example, the time information includes: the duration of the access network device's shutdown of the store and forward function. In one example, the time information includes: the duration and end time when the access network device disables the store and forward function.

[0183] In some embodiments, when the first information indicates that the access network device does not store the data to be forwarded, the terminal determines to stop monitoring the downlink information.

[0184] In some embodiments, when the first information indicates that the access network device does not store time information of the data to be forwarded, the terminal determines to stop monitoring the downlink information.

[0185] In some embodiments, when the first information indicates that the access network device does not store the data to be forwarded and the time information of the access network device not storing the data to be forwarded, the terminal can determine the duration of the non-storage of the data to be forwarded based on the time information, and during this duration, the terminal determines to stop monitoring downlink information. In some embodiments, the terminal can also determine to resume monitoring downlink information after the expiration of this duration.

[0186] In some embodiments, the time information when the access network device does not store the data to be forwarded includes at least one of the following: the starting time when the access network device does not store the data to be forwarded, the duration when the access network device does not store the data to be forwarded, and the ending time when the access network device does not store the data to be forwarded.

[0187] In one example, the time information includes: the start time when the access network device does not store data to be forwarded. In one example, the time information includes: the start time and end time when the access network device does not store data to be forwarded. In one example, the time information includes: the start time and duration of the period when the access network device does not store data to be forwarded. In one example, the time information includes: the end time when the access network device does not store data to be forwarded. In one example, the time information includes: the duration of the period when the access network device does not store data to be forwarded. In one example, the time information includes: the duration and end time of the period when the access network device does not store data to be forwarded.

[0188] In some embodiments, the first information further includes a terminal identifier, where the terminal identifier is used to indicate a terminal associated with the data stored in the access network device, or is used to indicate a terminal unrelated to the data stored in the access network device.

[0189] In some embodiments, when the terminal identifier is used to indicate a terminal associated with data stored in the access network device, a terminal not indicated by the terminal identifier stops monitoring downlink information, and a terminal indicated by the terminal identifier keeps monitoring downlink information.

[0190] In one example, the access network device stores data of the second terminal but does not store data of the first terminal. When the terminal identifier indicates the second terminal, the first terminal stops monitoring downlink information, and the second terminal determines to keep monitoring downlink information.

[0191] In some embodiments, when the terminal identifier is used to indicate a terminal that is not related to data stored in the access network device, the terminal indicated by the terminal identifier stops monitoring downlink information, and the terminal not indicated by the terminal identifier keeps monitoring downlink information.

[0192] In one example, the access network device stores data of the second terminal but does not store data of the first terminal. When the terminal identifier indicates the first terminal, the first terminal determines to stop monitoring downlink information, and the second terminal determines to keep monitoring downlink information.

[0193] In some embodiments, the terminal identifier may include at least one of the following: a resume ID of the terminal, an international mobile subscriber identification number (IMSI), and a cell-radio network temporary identifier (CRNTI) of the terminal.

[0194] In step S3102, the first terminal stops monitoring downlink information according to the first information carried in the system message.

[0195] In some embodiments, stopping monitoring downlink information includes one of the following: stopping monitoring information transmitted in a downlink channel (eg, a physical downlink control channel (PDCCH)), and stopping monitoring paging messages.

[0196] In some embodiments, the state of the first terminal may include one of the following: RRC idle state, RRC inactive state, and RRC connected state. In some embodiments, the RRC idle state and the RRC inactive state may be referred to as an RRC non-connected state.

[0197] In some embodiments, the first terminal may ignore the configuration of discontinuous reception and not monitor downlink information. In one example, the first terminal may ignore the configuration of discontinuous reception (DRX) and not monitor PDCCH or paging messages. In another example, the first terminal may ignore the configuration of extended discontinuous reception (eDRX) and not monitor PDCCH or paging messages.

[0198] In some embodiments, when the first terminal is in the RRC unconnected state, the first terminal stops monitoring the paging message according to the received first information.

[0199] In some embodiments, when the first terminal is in the RRC connected state, the first terminal stops monitoring the downlink channel according to the received first information, for example, stops monitoring the physical downlink control channel.

[0200] In some embodiments, when the first information indicates the time information of the feeder link disconnection, the first terminal stops monitoring the downlink information within the duration indicated by the time information. In some embodiments, the first terminal resumes monitoring the downlink information after the duration indicated by the time information expires.

[0201] In some embodiments, when the first information indicates that the feeder link is disconnected, the first terminal may obtain second information and determine time information of the feeder link disconnection based on the second information.

[0202] In some embodiments, the second information may include at least one of ephemeris information associated with the satellite and time information determined based on the ephemeris information of the satellite. The time information determined based on the ephemeris information may be used to indicate the time when the feeder link is disconnected and / or the time when the feeder link is connected.

[0203] In one example, the second information may indicate a period during which the feeder link is disconnected, or may indicate a moment when the feeder link is disconnected. In one example, the second information may indicate a period during which the feeder link is connected, or may indicate a moment when the feeder link is connected.

[0204] In some embodiments, the time information determined based on the satellite's ephemeris information can be derived from the ephemeris information associated with the satellite. Based on this information, the first terminal can determine when the satellite is available to connect to the ground station, the duration of the feeder link connection, and when the satellite is disconnected from the ground station, thereby detecting whether the feeder link is available or unavailable.

[0205] In some embodiments, when the first information indicates the time when the access network device turns off the storage and forwarding function, the first terminal stops monitoring the downlink information for the duration indicated by the time information. In some embodiments, the first terminal resumes monitoring the downlink information after the duration indicated by the time information expires.

[0206] In some embodiments, when the first information indicates that the access network device does not store time information of the data to be forwarded, the first terminal stops monitoring the downlink information for the duration indicated by the time information. In some embodiments, the first terminal resumes monitoring the downlink information after the duration indicated by the time information expires.

[0207] In one example, the first terminal may pre-set a timer. After receiving a system message, the first terminal sets a timer duration based on time information carried in the system message or time information determined based on ephemeris information, and starts the timer. While the timer is running, the first terminal stops monitoring downlink information. After the timer expires, the first terminal resumes monitoring downlink information.

[0208] In step S3103, the first terminal obtains the latest system message.

[0209] In some embodiments, after step S3102, when the first terminal in the RRC non-connected state or the RRC connected state needs to send uplink data, the first terminal obtains the latest system message.

[0210] In some embodiments, the first terminal in the non-connected state establishes an RRC connection with the access network device based on the latest system message, the first terminal enters the connected state, and sends uplink data based on the uplink channel.

[0211] In some embodiments, the first terminal in the connected state sends uplink data based on the latest system message.

[0212] In some embodiments, after step S3102, when the first terminal in the non-connected state requests to establish an RRC connection, the first terminal obtains the latest system message and establishes an RRC connection with the access network device based on the latest system message, and the first terminal enters the connected state.

[0213] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3103. For example, step S3101 can be implemented as an independent embodiment. For example, step S3102 can be implemented as an independent embodiment. For example, step S3103 can be implemented as an independent embodiment. For example, step S3101 and step S3102 can be combined and implemented as a single embodiment. For example, step S3102 and step S3103 can be combined and implemented as a single embodiment.

[0214] FIG3B is a second interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the present disclosure embodiment relates to a communication method. Executed by the communication system 100, the communication method includes steps S3201 to S3202.

[0215] In step S3201, the access network device sends a first RRC message.

[0216] In some embodiments, the first terminal receives a first RRC message.

[0217] In some embodiments, the first RRC message is used to request to establish an RRC connection. In one example, the first RRC message is an RRC setup message.

[0218] In some embodiments, the first RRC message carries first information. The first information is used to instruct the first terminal to stop monitoring downlink information. In some embodiments, the first information is used to instruct the first terminal to stop monitoring downlink information.

[0219] In some embodiments, the time information when the first terminal stops monitoring the downlink information includes at least one of the following: the start time of stopping monitoring the downlink information, the end time of stopping monitoring the downlink information, and the duration of stopping monitoring the downlink information.

[0220] In one example, the time information includes: the start time of stopping monitoring downlink information. In one example, the time information includes: the start time and end time of stopping monitoring downlink information. In one example, the time information includes: the start time and duration of stopping monitoring downlink information. In one example, the time information includes: the end time of stopping monitoring downlink information. In one example, the time information includes: the duration of stopping monitoring downlink information. In one example, the time information includes: the duration and end time of stopping monitoring downlink information.

[0221] In step S3202, the first terminal stops monitoring downlink information according to the first information carried in the first RRC message.

[0222] In some embodiments, stopping monitoring downlink information includes stopping monitoring downlink channels, for example, stopping monitoring a physical downlink control channel (PDCCH).

[0223] In some embodiments, the first terminal may ignore the discontinuous reception configuration and not monitor downlink information. In one example, the first terminal may ignore the DRX configuration and not monitor the PDCCH or paging messages. In another example, the first terminal may ignore the eDRX configuration and not monitor the PDCCH or paging messages.

[0224] In some embodiments, when the first information instructs the first terminal to stop monitoring downlink information, the first terminal stops monitoring the downlink information after receiving the first RRC message.

[0225] In some embodiments, when the first information indicates the time when the first terminal stops monitoring downlink information, after receiving the first RRC message, the first terminal stops monitoring downlink information for the duration indicated by the time information. The first terminal resumes monitoring downlink information after the duration indicated by the time information expires.

[0226] In one example, the first terminal may pre-set a timer. After receiving the first RRC message, the first terminal may set the timer duration based on the time information carried in the first RRC message and start the timer. While the timer is running, the first terminal stops monitoring downlink information. After the timer expires, the first terminal resumes monitoring downlink information.

[0227] In some embodiments, when the first information indicates the time information for the first terminal to stop monitoring downlink information, after receiving the first RRC message, the first terminal sends a second RRC message and stops monitoring downlink information for the duration indicated by the time information. The first terminal resumes monitoring downlink information after the duration indicated by the time information expires.

[0228] In one example, the first terminal can pre-set a timer, and after receiving the first RRC message, send a second RRC message, set the timer duration according to the time information carried in the first RRC message, and start the timer; when the timer is running, the first terminal stops monitoring downlink information, and after the timer times out, the first terminal monitors downlink information.

[0229] In some embodiments, the second RRC message is a response message to the first RRC message. The second RRC message is used to indicate that the RRC connection establishment between the first terminal and the access network device is complete. In one example, the second RRC message is an RRC setup complete message.

[0230] The communication method involved in the embodiment of the present disclosure may include at least one of steps S3201 to S3202. For example, step S3201 may be implemented as an independent embodiment. For example, step S3202 may be implemented as an independent embodiment.

[0231] In some embodiments, terms such as “downlink information,” “downlink message,” “downlink data,” and “downlink channel” may be used interchangeably.

[0232] In some embodiments, the terms "stop listening", "stop receiving", "disable listening", "disable receiving", "do not listen", "do not receive" and the like can be used interchangeably.

[0233] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0234] In some embodiments, the terms "carry", "include", "contain", "encapsulate", etc. can be used interchangeably.

[0235] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0236] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0237] In some embodiments, terms such as "send", "transmit", "report", "transmit", "request", "bidirectional transmission", "send and / or receive" and the like can be used interchangeably.

[0238] In some embodiments, terms such as "send", "return", "feedback", "response", and "answer" can be used interchangeably.

[0239] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "some", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "some A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, some A, any A, or first A, etc., but not limited to this.

[0240] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0241] FIG4A is a schematic diagram illustrating a first implementation flow of a terminal executing a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the present embodiment relates to a communication method executed by a first terminal. The communication method includes steps S4101 to S4103.

[0242] In step S4101, a system message is received.

[0243] The optional implementation of step S4101 can be found in the optional implementation of step S3101 in FIG3A and other related parts of the embodiment involved in FIG3A , which will not be described in detail here.

[0244] In step S4102, according to the first information carried in the system message, monitoring of downlink information is stopped.

[0245] The optional implementation of step S4102 can refer to the optional implementation of step S3102 in Figure 3A and other related parts of the embodiment involved in Figure 3A, which will not be repeated here.

[0246] In step S4103, the latest system message is obtained.

[0247] The optional implementation of step S4103 can be found in the optional implementation of step S3103 in FIG3A and other related parts of the embodiment involved in FIG3A , which will not be described in detail here.

[0248] FIG4B is a schematic diagram of a first implementation flow of a terminal executing a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the present disclosure embodiment relates to a communication method executed by a first terminal. The communication method includes steps S4201 to S4202.

[0249] In step S4201, a first RRC message is received.

[0250] The optional implementation of step S4201 can refer to the optional implementation of step S3201 in Figure 3B and other related parts of the embodiment involved in Figure 3B, which will not be repeated here.

[0251] In step S4202, according to the first information carried in the first RRC message, monitoring of downlink information is stopped.

[0252] The optional implementation of step S4202 can refer to the optional implementation of step S3202 in Figure 3B and other related parts of the embodiment involved in Figure 3B, which will not be repeated here.

[0253] FIG4C is a schematic diagram of a first implementation flow of a terminal executing a communication method according to an embodiment of the present disclosure. As shown in FIG4C , the embodiment of the present disclosure relates to a communication method executed by a first terminal. The communication method includes step S4301.

[0254] In step S4301, first information is received.

[0255] The optional implementation of step S4301 can be found in the optional implementation of step S3101 in Figure 3A, the optional implementation of step S3201 in Figure 3B, other related parts in the embodiment involved in Figure 3A, and other related parts in the embodiment involved in Figure 3B, which will not be repeated here.

[0256] FIG4D is a schematic diagram of a first implementation flow of a terminal executing a communication method according to an embodiment of the present disclosure. As shown in FIG4D , the embodiment of the present disclosure relates to a communication method executed by a first terminal. The communication method includes step S4401.

[0257] In step S4401, according to the received first information, the monitoring of downlink information is stopped.

[0258] The optional implementation of step S4401 can be found in the optional implementation of step S3102 in Figure 3A, the optional implementation of step S3202 in Figure 3B, other related parts in the embodiment involved in Figure 3A, and other related parts in the embodiment involved in Figure 3B, which will not be repeated here.

[0259] FIG4E is a schematic diagram of an implementation flow of a communication method executed by an access network device according to an embodiment of the present disclosure. As shown in FIG4E , the present disclosure embodiment relates to a communication method executed by an access network device. The communication method includes step S4501.

[0260] In step S4501, a system message is sent.

[0261] The optional implementation of step S4501 can refer to the optional implementation of step S3101 in Figure 3A and other related parts of the embodiment involved in Figure 3A, which will not be repeated here.

[0262] FIG4F is a schematic diagram illustrating an implementation flow of a communication method executed by an access network device according to an embodiment of the present disclosure. As shown in FIG4F , the present disclosure embodiment relates to a communication method executed by an access network device. The communication method includes step S4601.

[0263] In step S4601, a first RRC message is sent.

[0264] The optional implementation of step S4601 can refer to the optional implementation of step S3201 in Figure 3B and other related parts of the embodiment involved in Figure 3B, which will not be repeated here.

[0265] FIG4G is a schematic diagram illustrating an implementation flow of a communication method executed by an access network device according to an embodiment of the present disclosure. As shown in FIG4G , the present disclosure embodiment relates to a communication method executed by an access network device. The communication method includes step S4701.

[0266] In step S4701, the first information is sent.

[0267] The optional implementation of step S4701 can be found in the optional implementation of step S3101 in Figure 3A, the optional implementation of step S3201 in Figure 3B, other related parts in the embodiment involved in Figure 3A, and other related parts in the embodiment involved in Figure 3B, which will not be repeated here.

[0268] In some embodiments, for storage and data forwarding, if the satellite has no feeder link connection or no stored data needs to be forwarded, the UE does not need to receive downlink data (e.g., MT data). However, according to current protocols, the UE will still monitor the physical downlink control channel (PDCCH) or paging messages, which increases UE power consumption unnecessarily.

[0269] In some embodiments, when the satellite has no feeder link connection or no stored data needs to be forwarded, the access network device instructs the UE not to receive MT data, for example, instructs the UE not to monitor PDCCH or paging.

[0270] In some embodiments, the access network device sends first information, and the UE does not monitor the PDCCH or paging according to an instruction of the first information.

[0271] In the embodiment of the present disclosure, not monitoring PDCCH and paging includes: the UE ignores various discontinuous reception configurations such as DRX / eDRX, and does not monitor PDCCH or paging messages.

[0272] In some embodiments, the first information is used to indicate at least one of the following: no feeder link connection, the duration of no feeder link connection, the storage and forwarding function is not turned on, the duration of not turning on the forwarding function, no stored data needs to be forwarded, and the duration of no stored data needs to be forwarded.

[0273] In some embodiments, the UE does not monitor PDCCH and / or paging in at least one of the following situations: no feeder link connection, no duration of feeder link connection, the storage and forwarding function is not turned on, the duration of not turning on the forwarding function, no stored data needs to be forwarded, and the duration of no stored data needs to be forwarded.

[0274] In some embodiments, the network has no feederlink connection but has stored data that needs to be forwarded, and the first information instructs a specific UE to monitor or not monitor the PDCCH and / or paging.

[0275] In some embodiments, the UE ID includes at least one of the following: resume ID, IMSI, and CRNTI of the UE.

[0276] In some embodiments, when a UE in a non-connected state or a UE in a connected state needs to send data (eg, MO data), or a non-connected state UE needs to establish an RRC connection, the latest system message is obtained.

[0277] In some embodiments, the first information is sent via a system message.

[0278] In some embodiments, the first information is used to indicate time information for stopping monitoring the downlink channel, and the first information is sent via an RRC setup message.

[0279] In some embodiments, the UE starts timing after receiving the RRC setup message, stops monitoring the PDCCH within the duration indicated by the time information, and starts monitoring the PDCCH after the duration indicated by the time information is reached.

[0280] In some embodiments, the UE receives an RRC setup message, sends an RRC setup complete message, starts timing after sending the RRC setup complete message, stops monitoring the PDCCH within the duration indicated by the time information, and starts monitoring the PDCCH after the time information is reached.

[0281] The present disclosure also provides a device for implementing any of the above methods. For example, a terminal is provided, which includes units or modules for implementing each step performed by the terminal in any of the above methods. For another example, another access network device is provided, which includes units or modules for implementing each step performed by the access network device in any of the above methods.

[0282] 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), and the functions of some or all of the above units or modules are realized by designing the logical relationship of the components in the circuit. For another 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 a 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 software called by the processor, and the rest by hardware circuits.

[0283] 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 file 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.

[0284] FIG5A is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG5A , a terminal 5100 may include: a transceiver module 5101 .

[0285] In some embodiments, the transceiver module 5101 is configured to receive first information indicating at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device deactivation of the store and forward function; time information of the access network device deactivation of the store and forward function; access network device failure to store data to be forwarded; time information of the access network device failure to store data to be forwarded; wherein the access network device is deployed on a satellite. In some embodiments, the transceiver module 5101 is configured to execute at least one of the communication steps (e.g., steps S4101 and S4102, but not limited thereto) performed by the terminal in any of the above methods, and is not further described herein.

[0286] In some embodiments, the transceiver module 5101 is further configured to stop monitoring downlink information based on the received first information. In some embodiments, the transceiver module 5101 is further configured to execute at least one of the communication steps (e.g., step S4201 and step S4202, but not limited thereto) such as sending and / or receiving performed by the terminal in any of the above methods, which will not be further described here.

[0287] FIG5B is an exemplary structural diagram of an access network device according to an embodiment of the present disclosure. As shown in FIG5B , the access network device 5200 may include a transceiver module 5201 .

[0288] In some embodiments, the transceiver module 5201 can be configured to send first information indicating at least one of the following: feeder link disconnection; time information of feeder link disconnection; access network device deactivation of the store and forward function; time information of the access network device deactivation of the store and forward function; access network device not storing data to be forwarded; time information of the access network device not storing data to be forwarded. In some embodiments, the transceiver module 5201 can be configured 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 further described here.

[0289] In some embodiments, the transceiver module 5201 may further be configured to send first information, where the first information is used by the terminal to determine to stop monitoring downlink information. In some embodiments, the transceiver module 5201 may further be configured 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 further described herein.

[0290] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module. The transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0291] Figure 6 is a schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure. Communication device 6100 can be an access network device, a terminal (e.g., user equipment), a chip, a chip system, or a processor that supports an access 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 6100 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.

[0292] As shown in Figure 6, the communication device 6100 includes one or more processors 6101. The processor 6101 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 the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to perform any of the above methods. Optionally, one or more processors 6101 are used to call instructions to enable the communication device 6100 to perform any of the above methods.

[0293] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps of sending and / or receiving in the above method (e.g., step S3101, step S3201, step S4101, step S4201, but not limited thereto), and the processor 6101 performs at least one of the other steps (e.g., step S3102, step S3202, step S4102, step S4202, but not limited thereto). In an optional embodiment, the transceiver 6102 may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0294] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memories 6103 may be located outside the communication device 6100. In alternative embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and may be configured to receive data from the memories 6103 or other devices, or to send data to the memories 6103 or other devices. For example, the interface circuits 6104 may read data stored in the memories 6103 and send the data to the processor 6101.

[0295] The communication device 6100 described in the above embodiment may be an access network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6 . 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.

[0296] FIG7 is a schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7100 shown in FIG7 , but the present invention is not limited thereto.

[0297] The chip 7100 includes one or more processors 7101. The chip 7100 is configured to execute any of the above methods.

[0298] In some embodiments, chip 7100 further includes one or more interface circuits 7102. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 7100 further includes one or more memories 7103 for storing data. Alternatively, all or part of memory 7103 may be located external to chip 7100. Optionally, interface circuit 7102 is connected to memory 7103 and may be used to receive data from memory 7103 or other devices, or may be used to send data to memory 7103 or other devices. For example, interface circuit 7102 may read data stored in memory 7103 and send the data to processor 7101.

[0299] In some embodiments, the interface circuit 7102 performs at least one of the communication steps of sending and / or receiving in the above method (e.g., step S3101, step S3201, step S4101, step S4201, but not limited thereto). The interface circuit 7102 performing the communication steps of sending and / or receiving in the above method, for example, means that the interface circuit 7102 performs data exchange between the processor 7101, chip 7100, memory 7103, or transceiver device. In some embodiments, the processor 7101 performs at least one of the other steps (e.g., step S3102, step S3202, step S4102, step S4202, but not limited thereto).

[0300] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0301] The embodiments of the present disclosure further provide a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes 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.

[0302] The embodiment of the present disclosure further provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0303] The embodiments of the present disclosure further provide a computer program, which, when executed on a computer, enables the computer to execute any of the above methods.

[0304] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0305] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A communication method, performed by a first terminal, comprising: Receive first information, where the first information is used to indicate at least one of the following: Feeder link disconnection; Information on the time when the feeder link is disconnected; The access network equipment turns off the store and forward function; Time information of when the access network device turns off the storage and forwarding function; The access network device does not store data to be forwarded; The access network device does not store time information of the data to be forwarded; Wherein, the access network equipment is deployed on a satellite.

2. The method according to claim 1, wherein The method further comprises: Stop monitoring downlink information according to the received first information.

3. The method according to claim 2, wherein: Stopping monitoring downlink information includes one of the following: Stop monitoring the information transmitted in the downlink channel; Stop listening for paging messages.

4. The method according to claim 2 or 3, wherein: The step of stopping monitoring downlink information according to the received first information includes at least one of the following: When the first information indicates that the feeder link is disconnected, stop monitoring downlink information; When the first information indicates time information of disconnection of the feeder link, stop monitoring downlink information within the duration indicated by the time information; When the first information instructs the access network device to disable the store and forward function, stop monitoring the downlink information; When the first information indicates the time information for shutting down the storage and forwarding function of the access network device, stop monitoring the downlink information within the duration indicated by the time information; When the first information indicates that the access network device does not store the data to be forwarded, stop monitoring the downlink information; In a case where the first information indicates that the access network device does not store time information of the data to be forwarded, the device stops monitoring downlink information within the duration indicated by the time information.

5. The method according to any one of claims 2 to 4, wherein: The first information includes a terminal identifier; the terminal identifier is used to indicate a terminal associated with data stored in the access network device; and stopping monitoring downlink information according to the received first information includes: If the terminals indicated by the terminal identifiers do not include the first terminal, monitoring of downlink information is stopped.

6. The method according to claim 5, wherein: The method further includes: when the terminals indicated by the terminal identifier include the first terminal, keeping monitoring downlink information.

7. The method according to any one of claims 2 to 4, wherein: The first information includes a terminal identifier; the terminal identifier is used to indicate a terminal that is not related to data stored in the access network device; and stopping monitoring downlink information according to the received first information includes: In a case where the terminals indicated by the terminal identifier include the first terminal, monitoring of downlink information is stopped.

8. The method according to claim 7, wherein: The method further includes: when the terminals indicated by the terminal identifiers do not include the first terminal, keeping monitoring downlink information.

9. The method according to any one of claims 2 to 8, wherein: After stopping monitoring the downlink information, the method further includes: When the first terminal needs to send uplink data, obtaining a system message; or, When the first terminal in the non-connected state requests to establish a radio resource control RRC connection, a system message is obtained.

10. The method according to any one of claims 1 to 9, wherein: The first information is carried in a system message.

11. A communication method, performed by a first terminal, the method comprising: Stop monitoring downlink information according to the received first information.

12. The method according to claim 11, wherein Stopping monitoring downlink information includes one of the following: Stop monitoring the information transmitted in the downlink channel; Stop listening for paging messages.

13. The method according to claim 11 or 12, wherein: The first information is used to indicate time information when the first terminal stops monitoring downlink information.

14. The method according to claim 13, wherein The first information is carried in a first RRC message, and the first RRC message is used to request establishment of an RRC connection.

15. The method according to claim 14, wherein The step of stopping monitoring downlink information according to the received first information includes: After receiving the first information, stop monitoring the downlink information within the duration indicated by the time information.

16. The method according to claim 14, wherein The step of stopping monitoring downlink information according to the received first information includes: Send a second RRC message and stop monitoring downlink information within the duration indicated by the time information; The second RRC message is used to indicate that the RRC connection establishment between the first terminal and the access network device is completed, and the second RRC message is a response message to the first RRC message.

17. The method according to claim 15 or 16, wherein The stopping of monitoring downlink information within the duration indicated by the time information includes: Starting a timer, wherein the duration of the timer is determined according to the time information; When the timer is running, the monitoring of downlink information is stopped.

18. The method according to claim 15 or 16, wherein The method further comprises: After the duration indicated by the time information ends, monitoring of downlink information is resumed.

19. The method according to claim 18, wherein After the duration indicated by the time information ends, resuming monitoring of downlink information includes: After the timer times out, monitoring of downlink information is resumed; the duration of the timer is determined according to the time information.

20. A communication method, performed by an access network device deployed on a satellite, the method comprising: Sending first information, where the first information is used to indicate at least one of the following: Feeder link disconnection; Information on the time when the feeder link is disconnected; The access network equipment turns off the store and forward function; Time information of when the access network device turns off the storage and forwarding function; The access network device does not store data to be forwarded; The access network device does not store time information of the data to be forwarded.

21. The method according to claim 20, wherein The first information is used by the terminal to determine to stop monitoring downlink information.

22. The method according to claim 21, wherein Stopping monitoring downlink information includes one of the following: Stop monitoring the information transmitted in the downlink channel; Stop listening for paging messages.

23. The method according to any one of claims 21 to 22, wherein: The first information includes a terminal identifier; the terminal identifier is used to indicate a terminal associated with data stored in the access network device; if the terminals indicated by the terminal identifier do not include the first terminal, the first information is used to instruct the first terminal to stop monitoring downlink information.

24. The method according to claim 23, wherein In a case where the terminals indicated by the terminal identifier include the first terminal, the first information is used to instruct the first terminal to keep monitoring downlink information.

25. The method according to any one of claims 21 to 22, wherein: The first information includes a terminal identifier; the terminal identifier is used to indicate a terminal that is not related to the data stored in the access network device; when the terminals indicated by the terminal identifier include the first terminal, the first information is used to instruct the first terminal to stop monitoring downlink information.

26. The method according to claim 25, wherein In a case where the terminals indicated by the terminal identifier do not include the first terminal, the first information is used to instruct the first terminal to keep monitoring downlink information.

27. The method according to any one of claims 20 to 26, wherein The first information is carried in a system message.

28. A communication method, performed by an access network device deployed on a satellite, the method comprising: Sending first information, where the first information is used by the terminal to determine to stop monitoring downlink information.

29. The method according to claim 28, wherein Stopping monitoring downlink information includes one of the following: Stop monitoring the information transmitted in the downlink channel; Stop listening for paging messages.

30. The method according to claim 28 or 29, wherein The first information is used by the terminal to determine time information for stopping monitoring downlink information.

31. The method according to claim 30, wherein The first information is carried in a first RRC message, and the first RRC message is used to request establishment of an RRC connection.

32. A terminal comprising: The transceiver module is configured to receive first information, wherein the first information is used to indicate at least one of the following: a feeder link is disconnected; Information on the time when the feeder link is disconnected; The access network device turns off the store and forward function; the time information of the access network device turning off the store and forward function; The access network device does not store data to be forwarded; The access network device does not store time information of data to be forwarded; wherein, the access network device is deployed on a satellite.

33. A terminal comprising: The transceiver module is configured to stop monitoring downlink information according to the received first information.

34. An access network device, comprising: The transceiver module is configured to send first information, wherein the first information is used to indicate at least one of the following: a feeder link is disconnected; feeder Link disconnection time information; The access network device turns off the store and forward function; the time information of the access network device turning off the store and forward function; The access network device does not store data to be forwarded; The access network device does not store time information of the data to be forwarded.

35. An access network device comprising: The transceiver module is configured to send first information, where the first information is used by the terminal to determine to stop monitoring downlink information.

36. A terminal comprising: one or more processors; The terminal is used to execute the communication method according to any one of claims 1 to 19.

37. An access network device comprising: one or more processors; Wherein, the access network device is used to execute the communication method described in any one of claims 20 to 31.

38. A communication system comprising a terminal and an access network device, wherein: The terminal is configured to implement the communication method according to any one of claims 1 to 19; the access network device is configured to implement the communication method according to any one of claims 20 to 31.

39. A storage medium storing instructions, wherein when the instructions are executed on an access network device or a terminal, the access network device or the terminal executes the communication method according to any one of claims 1 to 31.

40. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the communication method according to any one of claims 1 to 31.

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