CN117044385A

CN117044385A - Connection establishment method, device and storage medium

Info

Publication number: CN117044385A
Application number: CN202380009664.1A
Authority: CN
Inventors: 杨星
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-11-10

Abstract

The present disclosure relates to a connection establishment method, apparatus, and storage medium. The method comprises the following steps: receiving first information sent by a remote terminal, wherein the first information indicates a first service which the remote terminal has joined; receiving a paging message sent by a network device, wherein the paging message comprises information of a second service paged by the network device; and sending second information to the remote terminal, wherein the second information comprises information of a third service, the third service is a service matched with the first service in the second service, and the second information is used for triggering the remote terminal to establish or recover Radio Resource Control (RRC) connection. In this way, the relay terminal can forward the second information matched with the first service and sent by the network device to the remote terminal according to the first service which the remote terminal has joined, so that the remote terminal can establish or recover the RRC connection according to the second information.

Description

Connection establishment method, device and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a connection establishment method, apparatus, and storage medium.

Background

In a wireless communication system, a User Equipment (UE) in a connected state may receive a multicast service transmitted by a network device. After the multicast service is stopped, the UE may enter an inactive state or an idle state, and after the multicast service is resumed or started, the network device may send a notification to the UE in the inactive state or the idle state, so that the UE may enter a connection state from the inactive state or the idle state.

Disclosure of Invention

The embodiment of the disclosure provides a connection establishment method, a device and a storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a connection establishment method performed by a relay terminal, the method including:

receiving first information sent by a remote terminal, wherein the first information indicates a first service which the remote terminal has joined;

receiving a paging message sent by a network device, wherein the paging message comprises information of a second service paged by the network device;

and sending second information to the remote terminal, wherein the second information comprises information of a third service, the third service is a service matched with the first service in the second service, and the second information is used for triggering the remote terminal to establish or recover Radio Resource Control (RRC) connection.

According to a second aspect of embodiments of the present disclosure, there is provided a connection establishment method performed by a remote terminal, the method comprising:

transmitting first information to a relay terminal, wherein the first information indicates a first service which is added by the remote terminal;

receiving second information sent by the relay terminal, wherein the second information comprises information of a third service, the third service is a service matched with the first service in the second service, and the second service is a service paged by the network equipment;

and establishing or recovering the Radio Resource Control (RRC) connection according to the second information.

According to a third aspect of embodiments of the present disclosure, there is provided a connection establishment method performed by a network device, the method comprising:

the method comprises the steps that paging information is sent to a relay terminal, the paging information comprises information of a second service paged by the network equipment, the paging information is used for sending the second information to a remote terminal by the relay terminal, the second information comprises information of a third service, the third service is a service matched with a first service in the second service, the first service is a service added by the remote terminal, and the second information is used for triggering the remote terminal to establish or restore Radio Resource Control (RRC) connection.

According to a fourth aspect of embodiments of the present disclosure, there is provided a relay terminal, including:

a first receiving module configured to receive first information sent by a remote terminal, where the first information indicates a first service that the remote terminal has joined;

the first receiving module is further configured to receive a paging message sent by a network device, where the paging message includes information of a second service paged by the network device;

the first sending module is configured to send second information to the remote terminal, the second information comprises information of third service, the third service is a service matched with the first service in the second service, and the second information is used for triggering the remote terminal to establish or recover Radio Resource Control (RRC) connection.

According to a fifth aspect of embodiments of the present disclosure, there is provided a remote terminal comprising:

a second transmitting module configured to transmit first information to a relay terminal, the first information indicating a first service to which the remote terminal has joined;

the second receiving module is configured to receive second information sent by the relay terminal, the second information comprises information of third service, the third service is a service matched with the first service in second service, and the second service is a service paged by the network equipment;

And a processing module configured to establish or recover a Radio Resource Control (RRC) connection according to the second information.

According to a sixth aspect of embodiments of the present disclosure, there is provided a network device comprising:

the third sending module is configured to send a paging message to the relay terminal, wherein the paging message comprises information of a second service paged by the network device, the paging message is used for sending the second information to the remote terminal by the relay terminal, the second information comprises information of a third service, the third service is a service matched with the first service in the second service, the first service is a service added by the remote terminal, and the second information is used for triggering the remote terminal to establish or recover Radio Resource Control (RRC) connection.

According to a seventh aspect of embodiments of the present disclosure, there is provided a communication apparatus comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the connection establishment method provided in the first, second or third aspect of the present disclosure.

According to an eighth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the connection establishment method provided in the first, second or third aspect of the present disclosure.

According to a ninth aspect of embodiments of the present disclosure, there is provided a communication system comprising:

a relay terminal, which may perform the connection establishment method provided in the first aspect of the present disclosure;

a remote terminal, the remote terminal being capable of performing the connection establishment method provided in the second aspect of the present disclosure;

a network device, which may perform the connection establishment method provided in the third aspect of the present disclosure.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the relay terminal receives first information sent by a remote terminal, wherein the first information indicates a first service which the remote terminal has joined; receiving a paging message sent by a network device, wherein the paging message comprises information of a second service paged by the network device; and sending second information to the remote terminal, wherein the second information comprises information of a third service, the third service is a service matched with the first service in the second service, and the second information is used for triggering the remote terminal to establish or recover Radio Resource Control (RRC) connection. In this way, the relay terminal can forward the second information matched with the first service and sent by the network device to the remote terminal according to the first service which the remote terminal has joined, so that the remote terminal can establish or recover the RRC connection according to the second information.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram of a communication system, shown according to an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating a method of transmitting service data according to an exemplary embodiment.

Fig. 3 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 4 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 5 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 6 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 7 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 8 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 9 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 10 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 11 is a flow chart illustrating a connection establishment method according to an exemplary embodiment.

Fig. 12 is a block diagram of a relay terminal according to an exemplary embodiment.

Fig. 13 is a block diagram of a remote terminal according to an exemplary embodiment.

Fig. 14 is a block diagram of a network device, according to an example embodiment.

Fig. 15 is a block diagram of a communication device, according to an example embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The embodiments of the present disclosure are not intended to be exhaustive, but rather are exemplary of some embodiments and are not intended to limit the scope of the disclosure. In the case of no contradiction, each step in a certain embodiment may be implemented as an independent embodiment, and the steps may be arbitrarily combined, for example, a scheme in which part of the steps are removed in a certain embodiment may also be implemented as an independent embodiment, the order of the steps in a certain embodiment may be arbitrarily exchanged, and further, alternative implementations in a certain embodiment may be arbitrarily combined; furthermore, various embodiments may be arbitrarily combined, for example, some or all steps of different embodiments may be arbitrarily combined, and an embodiment may be arbitrarily combined with alternative implementations of other embodiments.

In the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent throughout the various embodiments and may be referenced to each other in the absence of any particular explanation or logic conflict, and features from different embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

Unless otherwise indicated, the same reference numerals in different figures may refer to the same elements throughout the description with reference to the figures. Although the operations or steps are described in a particular order in the disclosed embodiments or figures, this should not be understood as requiring that the operations or steps be performed in the particular order shown or in sequential order, or that all of the illustrated operations or steps be performed, to achieve desirable results. In the disclosed embodiments, these operations or steps may be performed in any order, without conflict; these operations or steps may also be performed in parallel; some of these operations or steps may also be performed; operations or steps in various embodiments or figures may be combined in any manner and are not limited by the disclosed embodiments.

In describing embodiments of the present disclosure, unless otherwise indicated, "a plurality" means two or more, and other adjectives are similar thereto. "at least one item", "an item" or "a plurality of items" or the like, refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one term(s) may represent any number; as another example, one (or more) of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural. "and/or" is an association relationship describing an association object, meaning that there may be three relationships, e.g., a and/or B, which may represent: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" indicates that the front-rear association object is an or relationship.

In describing embodiments of the present disclosure, the singular forms "a," "an," "the," "said," "the," and "such" may mean "one and only one," or "one or more," "at least one," etc., unless otherwise indicated or clearly indicated by the context. For example, where an article (article) is used in translation, such as "a," "an," "the," etc., in english, a noun following the article may be understood as a singular expression or as a plural expression.

In the description of the embodiments of the present disclosure, "in a case a, in another case B", "in response to a case a", "in response to another case B", and the like, the following technical solutions may be included according to circumstances: a is performed independently of B, i.e., a in some embodiments; b is performed independently of a, i.e., in some embodiments B; a and B are selectively performed, i.e., in some embodiments selected from a and B; both a and B are performed, i.e., a and B in some embodiments. Similar to that described above when there are more branches such as A, B, C.

In the description of the embodiments of the present disclosure, the "a or B" recording manner may include the following technical solutions according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments execution is selected from a and B (a and B are selectively executed). Similar to that described above when there are more branches such as A, B, C.

The prefix words "first", "second", etc. in the embodiments of the present disclosure are only for distinguishing different description objects, and do not limit the location, order, priority, number, content, etc. of the description objects, and the statement of the description object refers to the claims or the description of the embodiment context, and should not constitute unnecessary limitations due to the use of the prefix words. For example, if the description object is a "field", the ordinal words before the "field" in the "first field" and the "second field" do not limit the position or the order between the "fields", and the "first" and the "second" do not limit whether the "fields" modified by the "first" and the "second" are in the same message or not. For another example, describing an object as "level", ordinal words preceding "level" in "first level" and "second level" do not limit priority between "levels". As another example, the number of descriptive objects is not limited by ordinal words, and may be one or more, taking "first device" as an example, where the number of "devices" may be one or more. Furthermore, objects modified by different prefix words may be the same or different, e.g., the description object is "a device", then "a first device" and "a second device" may be the same device or different devices, and the types may be the same or different; for another example, the description object is "information", and the "first information" and the "second information" may be the same information or different information, and the contents thereof may be the same or different.

In the description of the embodiments of the present disclosure, "including a", "containing a", "for indicating a", "carrying a", may be interpreted as carrying a directly, or as indicating a indirectly.

In the description of the embodiments of the present disclosure, terms "responsive to … …", "responsive to determination … …", "in the case of … …", "at … …", "when … …", "if … …", "if … …", and the like may be interchanged without contradiction or lack of characterization.

In the description of the embodiments of the present disclosure, an apparatus or the like may be interpreted as an entity, or may be interpreted as a virtual, and the names thereof are not limited to the names described in the embodiments, "apparatus," "device," "circuit," "network element," "node," "function," "unit," "section," "system," "network," "chip system," "entity," "body," and the like may be replaced with each other.

In the description of the embodiments of the present disclosure, the names of messages or information interacted between a plurality of devices are for illustrative purposes only and are not intended to limit the scope of such messages or information.

Furthermore, each element, each row, or each column in the tables of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any rows, or any columns may also be implemented as a separate embodiment.

The following first describes the environment in which embodiments of the present disclosure are implemented.

The technical scheme of the embodiment of the disclosure can be applied to various communication systems. The communication system may include one or more of a fourth generation (the 4th Generation,4G) communication system, a fifth generation (the 5th Generation,5G) communication system, and other future wireless communication systems such as 6G. The communication system may also include one or more of a public land mobile network (Public Land Mobile Network, PLMN) network, a Device-to-Device (D2D) communication system, a machine-to-machine (Machine to Machine, M2M) communication system, an internet of things (Internet of Things, ioT) communication system, a Vehicle-to-evaluation (V2X) communication system, or other communication systems.

Fig. 1 is a schematic diagram of a communication system 100, shown according to an example embodiment. As shown in fig. 1, the communication system 100 may include a terminal device 150 and a network device 160. The communication system may be used to support 4G network access technologies, such as long term evolution (Long Term Evolution, LTE) access technologies, or 5G network access technologies, such as New radio access technologies (New Radio Access Technology, new RAT), or other future wireless communication technologies. It should be noted that, in the communication system, the number of network devices and terminal devices may be one or more, and the number of network devices and terminal devices in the communication system shown in fig. 1 is merely an adaptive example, which is not limited in this disclosure.

The network device in fig. 1 may be used to provide wireless communication functionality for a terminal device. For example, the network device may include an evolved base station (evolutional Node B, eNB or eNodeB) in LTE; the network device may also include a next generation base station (the next Generation Node B, gNB or gndeb) in a 5G network; the network device may also include a radio access network (NG-Radio Access Network, NG-RAN) device in a 5G network; the network device may also include at least one of a base station, broadband network service gateway (Broadband Network Gateway, BNG), aggregation switch, or non-third generation partnership project (3rd Generation Partnership Project,3GPP) access device in a future evolved public land mobile network (Public Land Mobile Network, PLMN). Optionally, the network device in the embodiments of the present disclosure may include at least one of the following various forms of base stations, for example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, 5G base stations or future base stations, satellites, transmission points (Transmitting and Receiving Point, TRP), transmission points (Transmitting Point, TP), mobile switching centers, and Device-to-Device (D2D), machine-to-Machine (M2M), internet of things (Internet of Things, ioT), internet of vehicles (V2X), other devices that assume base station functionality in a communication system, and the like, as the embodiments of the present disclosure are not limited in this regard. For convenience of description, in the embodiments of the present disclosure, the apparatus for providing a wireless communication function for a terminal device may be referred to as a network device.

In some embodiments, the network device may include a core network device and an access network device, which may also be referred to as a base station. The terminal device may communicate with the core network device via the access network device.

In some embodiments, AN Access network Device (Access Network Device, AN Device), a radio Access network Device (Radio Access Network Device, RAN Device), a Base Station (BS), a radio Base Station (Radio Base Station), a Fixed Station (Fixed Station), a NODE (NODE), AN Access Point (Access Point), a Transmission Point (Transmission Point, TP), a Reception Point (RP), a Transmission Reception Point (Transmission/Reception Point, the terms TRP) "," Panel "," Antenna Array "," Cell "," Macro Cell "," Small Cell "," Femto Cell "," Pico Cell "," Sector "," Cell Group "," serving Cell "," Carrier "," component Carrier (Component Carrier) ", bandwidth Part (BWP)", etc. may be replaced with each other.

The Terminal device in fig. 1 may be an electronic device providing voice or data connectivity, and may be referred to as a User Equipment (UE), a Subscriber Unit (Subscriber Unit), a Mobile Station (Mobile Station), a Station (Station), a Terminal (Terminal), or the like, for example. By way of example, the terminal device may include a smart phone, a smart wearable device, a smart speaker, a smart tablet, a wireless modem (modem), a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a customer terminal device (Customer Premise Equipment, CPE), and the like. With the development of wireless communication technology, a device that can access a communication system, can communicate with a network device of the communication system, can communicate with other objects through the communication system, or a device that can directly communicate between two or more devices may be a terminal device in an embodiment of the disclosure; for example, terminals and automobiles in intelligent transportation, household devices in intelligent homes, meter reading instruments for electric power in smart grids, voltage monitoring instruments, environment monitoring instruments, video monitoring instruments in intelligent security networks, cash registers, etc. In the embodiments of the present disclosure, the terminal device may communicate with the network device. Communication may also take place between a plurality of terminal devices. The terminal device may be stationary or mobile, and the embodiments of the present disclosure are not limited in this regard.

In some embodiments, "Terminal (Terminal)", "Terminal Device (Terminal Device)", "User Equipment (Ue)", "User Terminal (User Terminal)", "Mobile Station (MS)", "Mobile Terminal (MT)", "Subscriber Station (Subscriber Station)", "Mobile Unit (Mobile Unit)", "Subscriber Unit (Subscriber Unit)", "Wireless Unit (Wireless Unit)", "Remote Unit (Remote Unit)", "Mobile Device (Mobile Device)", "Wireless Device (Wireless Communication Device)", "Remote Device (Mobile Device)", "Mobile Subscriber Station (Mobile Subscriber Station)", "Access Terminal (Access Terminal)", "Mobile Terminal (Mobile Terminal)", "Wireless Terminal (Wireless Terminal)", "Remote Terminal (Terminal Unit)", "User Terminal (Mobile Unit)", "User Agent (Client Terminal)", and the like.

In some embodiments, the access network device, core network device, or network device may be replaced with a terminal. For example, the embodiments of the present disclosure may also be applied to a structure in which an access network device, a core network device, or communication between a network device and a terminal is replaced with communication between a plurality of terminals (for example, device-to-device (D2D), vehicle-to-device (V2X), or the like). In this case, the terminal may have all or part of the functions of the access network device. In addition, terms such as "uplink", "downlink", and the like may be replaced with terms corresponding to communication between terminals (e.g., "side by side or direct connection"). For example, uplink, downlink, etc. may be replaced with a sidelink or a direct link, and uplink, downlink, etc. may be replaced with a sidelink or a direct link.

In some embodiments of the present disclosure, as shown in fig. 1, the terminal device 150 may include a remote terminal 151 and a relay terminal 153. Wherein: the relay terminal 153 may be used to provide a relay function for the remote terminal 151 to communicate with the network device 160, in which case the remote terminal 151 may be referred to as a remote UE (remote UE), and the relay terminal 153 providing the relay function may be referred to as a relay UE (relay UE).

In some embodiments, communication between relay terminal 153 and network device 160 may be via a first wireless link, which is a non-direct link, which may include an uplink and/or a downlink between the relay terminal and the network device. For example, the first wireless link may include one or more wireless channels, e.g., one or more of PRACH (Physical Random Access Channel ), PUCCH (Physical Uplink Control Channel, physical uplink control channel), PUSCH (Physical Uplink Shared Channel ), PDSCH (Physical Downlink Shared Channel, physical downlink shared channel), PDCCH (Physical Downlink Control Channel ), and the like. The interface between the relay terminal 153 and the network device 160 for communication may be referred to as a first wireless interface, which is a non-direct link interface, for example, the first wireless interface may be a UU interface.

In some embodiments, communication between the remote terminal 151 and the relay terminal 153 may be through a direct link Sidelink. Illustratively, the direct link may include one or more direct link channels, e.g., one or more of a physical direct link broadcast channel (Physical Sidelink Broadcast Channel, PSBCH), a physical direct link control channel (Physical Sidelink Control Channel, PSCCH), a physical direct link shared channel (Physical Sidelink Shared Channel, PSSCH), and the like. The interface for communication between the remote terminal 151 and the relay terminal 153 may be referred to as a PC5 interface or a direct communication interface. The manner in which the direct link communication between the remote terminal 151 and the relay terminal 153 may include any one or more of unicast, multicast or broadcast.

In some embodiments, direct communication between remote terminal 151 and network device 160 may be via a first wireless link; in other embodiments, communication between remote terminal 151 and network device 160 may also be accomplished through a relay terminal; in other embodiments, communication between the remote terminal 151 and the network device 160 may be performed either directly via the first wireless link or via the relay terminal.

It should be noted that, in fig. 1, the terminal device 150 may further include a first terminal, a second terminal, or more terminals; the number of the remote terminals may be one or more, and the number of the relay terminals may be one or more, which is not limited in the embodiments of the present disclosure.

Fig. 2 is a schematic diagram illustrating a method of transmitting service data according to an exemplary embodiment. As shown in fig. 2, the network device may transmit multicast or broadcast service data through a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) entity and a radio link control (Radio Link Control, RLC) entity; the relay terminal receives the service data through the RLC entity and sends the service data through the SL-RLC entity; the remote terminal may receive the service data through a direct link radio link control (SL-RLC) entity and a PDCP entity. In this way, the relay terminal can realize the forwarding of the service data through the RLC entity and the SL-RLC entity without the PDCP entity.

In some embodiments, the network device may further include a medium access control MAC (Medium Access Control) entity and a Physical layer PHY (Physical) entity, the remote terminal may further include a direct link medium access control SL-MAC entity and a direct link Physical layer SL-PHY entity, and the relay terminal may also include a MAC entity, a PHY entity, a SL-MAC entity, and a SL-PHY entity.

Note that, for the relevant descriptions of PDCP, RLC, MAC and PHY, reference may be made to descriptions in the 3GPP protocol, and details are not repeated here.

In some embodiments of the present disclosure, the remote terminal 151 may receive multicast traffic or broadcast traffic transmitted by the network device 160 in a connected state. After the multicast service or the broadcast service is stopped, the remote terminal 151 may be released to an inactive state or an idle state. After the multicast or broadcast service is restored or started, the network device 160 may send a notification to the terminal device in the inactive state or idle state, which may be, for example, a paging group list (paging Group List) carried in a paging message, where one or more temporary mobile group identities (Temporary Mobile Group Identity, TMGI) may be carried, where the TMGI is used to identify the multicast or broadcast service.

If the remote terminal 151 in the inactive state or the idle state receives the paging message sent by the network device 160, and determines that the TMGI identifier carried in the paging message is the multicast service or the broadcast service that the remote terminal 151 has joined, the remote terminal 151 may enter the connected state.

In some embodiments of the present disclosure, the remote terminal 151 may not be directly connected to the network device 160, and communication with the network device 160 is achieved through the relay terminal 153, so that coverage of the network device may be expanded.

For example, the remote terminal 151 in the inactive state or idle state may transmit paging information (SL-paging info-RemoteUE) to the relay terminal 153 device, wherein the paging information may be carried in a remote user equipment information side chain (remoteueinfo sidelink), the paging information may include a paging identity (SL-paging identity RemoteUE) of the remote terminal 151 and a paging cycle, and the paging identity of the remote terminal 151 may be an initial radio network temporary identifier (Initial Radio Network Temporary Identifier, I-RNTI) or a Next Generation 5G network-reduced temporary mobile subscriber identity (Next Generation 5G-Simplified Temporary Mobile Subscriber Identity, NG-5G-S-TMSI). Relay terminal 153 may monitor Paging messages sent by network device 160, where the Paging messages may carry a Paging Record list (Paging Record List), where the Paging Record list may carry one or more Paging records (Paging Record), and each Paging Record may carry a Paging UE Identity (Paging UE-Identity), where the Paging UE Identity may be an I-RNTI or NG-5G-S-TMSI.

If the paging UE identifier carried in the paging message sent by the network device 160 and received by the relay terminal 153 is consistent with the paging identifier of the remote terminal 151, the paging record is sent to the remote terminal 151, where the paging record may be carried by a Uu message transmission side chain (uumessage transfer sidelink). The remote terminal 151 enters a connected state after receiving the paging record transmitted from the relay terminal 153.

It should be noted that, for the description of the idle state, the inactive state, and the connection state, reference may be made to the description in the 3GPP protocol, which is not repeated herein.

In some embodiments of the present disclosure, after the multicast or multicast service resumes or starts, the network device 160 may send a paging message carrying the TMGI to the relay terminal 153, and since the paging message does not carry the paging UE identifier, the relay terminal 153 fails to match the paging message with the remote terminal 151, so that the paging message sent by the network device 160 cannot be forwarded to the remote terminal 151, which results in the remote terminal 151 in an inactive state or an idle state failing to enter the connected state.

Fig. 3 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by the communication system described above. As shown in fig. 3, the method may include:

s301, the remote terminal sends first information to the relay terminal.

Wherein the first information indicates a first service that the remote terminal has joined.

In some embodiments, the first service may comprise a multicast service or a broadcast service.

In some embodiments, the first service may be a service that the remote terminal is interested in or expects to receive.

Alternatively, the first service may be a IPTV (Internet Protocol Television), video conference, live webcast, broadcast television, or the like service.

In other embodiments, the first service may be a service that requires information to be delivered to the user.

Alternatively, the first service may be an emergency notification, weather warning, or the like.

In other embodiments, the first service may be other services that need to be sent to the remote terminal through the relay terminal, which is not limited by the embodiments of the present disclosure.

In some embodiments, the first information may include at least one temporary mobile group identity, TMGI.

In some embodiments, the first information may also be referred to as first paging group information.

In some embodiments, the first paging group information may be carried by paging group information.

For example, the remote terminal may send paging group information to the relay terminal, where the paging group information carries first paging group information, where the first paging group information includes a TMGI of a first service that the remote terminal has joined.

Alternatively, the first paging group information may be a TMGI of a multicast service or a broadcast service to which the remote terminal has joined.

In some embodiments, the first paging group information may be carried by remoteueinfo information sidelink.

In some embodiments, the remote terminal is in an idle state or inactive state, and may send the first information to the relay terminal.

For example, after the remote terminal is switched from the connection state to the idle state or the inactive state, the first information may be sent to the relay terminal; the remote terminal may transmit the first information to the relay terminal when switching to the new relay terminal.

In some embodiments, the remote terminal may send the first information to the relay terminal over a direct link.

S302, the network equipment sends a paging message to the relay terminal.

Wherein the paging message may include information of a second service paged by the network device.

In some embodiments, the second service may comprise a multicast service or a broadcast service.

In some embodiments, the information of the second service may also be referred to as second paging group information.

For example, the paging message may include second paging group information.

In some embodiments, the paging message may include at least one TMGI.

In some embodiments, the paging message may also include a paging terminal identification.

It should be noted that, the paging terminal identifier may also be referred to as a paging UE identifier, which is not limited by the embodiments of the present disclosure.

In this step, the network device may send the paging message to the relay terminal through a wireless link (a non-direct link, e.g., UU port).

In some embodiments, the network device may send the paging message to the relay terminal in case it is determined that the multicast service or broadcast service is resumed or started.

It should be noted that, in the embodiment of the present disclosure, the execution sequence of the step S301 and the step S302 is not limited, and the step S301 may be executed first, then the step S302 may be executed first, then the step S301 may be executed, and further the step S301 and the step S302 may be executed simultaneously.

For example, the relay terminal determines that the first information sent by the remote terminal is received, and monitors the paging message sent by the network device.

S303, the relay terminal determines that a third service matched with the first service exists in the second service, and sends second information to the remote terminal.

In some embodiments, the third service may comprise a multicast service or a broadcast service.

In some embodiments, the second information may include at least one TMGI.

In the step, the relay terminal may monitor the paging message sent by the network device, and after receiving the paging message sent by the network device, determine a service matching the first service from the second service, to obtain the third service.

Illustratively, taking the paging message including second paging group information, where the first information is first paging group information as an example, the relay terminal determines that at least one second paging group information matching the first paging group information exists in the paging message, and sends the matched second paging group information to the remote terminal.

In some embodiments, the second paging group information may be carried by UuMessageTransferSidelink.

In some embodiments, the relay terminal may store the first information received from the remote terminal, determine that there is a third service matching the first service in the second service after hearing the paging message sent by the network device, and send the second information to the remote terminal.

In some embodiments, the relay terminal may send the paging terminal identification to the remote terminal.

Optionally, the relay terminal determines that a third service matched with the first service exists in the second service, and may send the second information and the paging terminal identifier to the remote terminal.

And S304, the remote terminal establishes or restores RRC connection according to the second information.

In this step, the remote terminal receives the second information sent by the relay terminal, and may send the second information to the non-access layer, and after the non-access layer receives the second information sent by the remote terminal, the RRC connection establishment procedure may be triggered, so that the remote terminal establishes or resumes the RRC connection.

It should be noted that the non-access stratum may also be referred to as a higher layer.

In some embodiments, when the remote terminal is in an idle state, the second information is sent to a non-access layer, and the non-access layer triggers an RRC connection establishment procedure after receiving the second information sent by the remote terminal, and the remote terminal may establish an RRC connection through the relay terminal.

Thus, the remote terminal can establish the RRC connection according to the second information and the current state of the remote terminal.

In other embodiments, the remote terminal sends the second information to the non-access layer when the remote terminal is in the inactive state, and the non-access layer triggers the RRC connection recovery procedure after receiving the second information sent by the remote terminal, and the remote terminal recovers the RRC connection through the relay terminal.

Thus, the remote terminal can recover the RRC connection according to the second information and the current state of the remote terminal.

In other embodiments, after receiving the paging terminal identifier and the second information sent by the relay terminal, the remote terminal does not perform state judgment, and directly sends the second information to the non-access layer, and after receiving the second information sent by the remote terminal, the non-access layer triggers an RRC connection establishment procedure, and the remote terminal may establish an RRC connection through the relay terminal.

In some embodiments, the paging terminal identification sent by the relay terminal may be NG-5G-S-TMSI.

In this way, the remote terminal can establish an RRC connection directly according to the second information.

In some embodiments, the remote terminal determines that the third service in the second information is a service matching the first service, and the remote terminal is in an idle state or an inactive state, and sends the second information to the non-access stratum.

Optionally, the remote terminal determines that the third service in the second information is a service matched with the first service, and the remote terminal is in an idle state, and sends the second information to the non-access layer, and the non-access layer triggers an RRC connection establishment process after receiving the second information sent by the remote terminal, and the remote terminal can establish an RRC connection through the relay terminal.

Optionally, the remote terminal determines that the third service in the second information is a service matched with the first service, and the remote terminal is in a non-activated state, and sends the second information to the non-access layer, and the non-access layer triggers the RRC connection recovery process after receiving the second information sent by the remote terminal, and the remote terminal recovers the RRC connection through the relay terminal.

In some embodiments, the remote terminal may receive the paging terminal identifier sent by the relay terminal, the remote terminal determines that the third service in the second information is a service matched with the first service, and the remote terminal is in an idle state, and the paging terminal identifier is matched with the remote terminal identifier of the remote terminal, and establishes an RRC connection according to the second information.

Optionally, the remote terminal may receive the paging terminal identifier sent by the relay terminal, the remote terminal determines that the third service in the second information is a service matched with the first service, and the remote terminal is in an idle state, where the paging terminal identifier is matched with the remote terminal identifier of the remote terminal, and sends the second information to the non-access layer, and after receiving the second information sent by the remote terminal, the non-access layer triggers an RRC connection establishment procedure, and the remote terminal may establish an RRC connection through the relay terminal.

Thus, the remote terminal can establish RRC connection according to the second information, the current state of the remote terminal and the paging terminal identification.

Optionally, the remote terminal may further receive a paging terminal identifier sent by the relay terminal, the remote terminal determines that a third service in the second information is a service matched with the first service, and the remote terminal is in an inactive state, and the paging terminal identifier is matched with a remote terminal identifier of the remote terminal, and sends the second information to a non-access layer, and after receiving the second information sent by the remote terminal, the non-access layer triggers an RRC connection recovery process, and the remote terminal recovers RRC connection through the relay terminal.

Thus, the remote terminal can recover the RRC connection according to the second information, the current state of the remote terminal and the paging terminal identification.

In some embodiments, the remote terminal identity may be a next generation 5G network-reduced temporary Mobile subscriber identity, NG-5G-S-TMSI.

In some embodiments, the NG-5G-S-TMSI may be a non-access stratum pre-assigned identification of the remote terminal.

By adopting the method, the relay terminal can forward the second information matched with the first service and sent by the network equipment to the remote terminal according to the first service which the remote terminal has joined, so that the remote terminal can establish or recover RRC connection according to the second information.

Fig. 4 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by a relay terminal in the above-described communication system. As shown in fig. 4, the method may include:

s401, the relay terminal receives first information sent by the remote terminal.

Wherein the first information may indicate a first service to which the remote terminal has joined.

It should be noted that, for the specific implementation of the first information and the first service, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

S402, the relay terminal receives paging messages sent by the network equipment.

In some embodiments, the paging message may include at least one TMGI.

It should be noted that, for the specific implementation of the paging message and the second service, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

It should be noted that, in the embodiment of the present disclosure, the execution order of the step S401 and the step S402 is not limited, and the step S401 may be executed first, then the step S402 may be executed first, then the step S401 may be executed, and further the step S401 and the step S402 may be executed simultaneously.

S403, the relay terminal sends second information to the remote terminal.

The second information may include information of a third service, where the third service is a service matched with the first service in the second service.

In some embodiments, the second information is used to trigger the remote terminal to establish or restore an RRC connection.

In some embodiments, the second information may include at least one TMGI.

In some embodiments, the second information may be further used to trigger the remote terminal to determine that the third service in the second information is a service matching the first service, and the remote terminal is in an idle state or an inactive state.

It should be noted that, for the specific implementation of the second information and the third service, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

It should also be noted that, under the condition of no contradiction, the present embodiment may be combined with the foregoing embodiment or implementation manner of the present disclosure and various alternatives thereof, and the specific implementation manner of the foregoing steps in the present embodiment may also refer to the description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

In this way, the relay terminal can forward the second information matched with the first service and sent by the network device to the remote terminal according to the first service which the remote terminal has joined, so that the remote terminal can establish or recover the RRC connection according to the second information.

Fig. 5 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by a relay terminal in the above-described communication system. As shown in fig. 5, the method may include:

s501, the relay terminal determines that a third service matched with the first service exists in the second service.

For example, taking the paging message including at least one TMGI as an example, if the relay terminal determines that at least one TMGI included in the paging message exists in at least one TMGI that is the same as at least one TMGI included in the first information, the information of the service corresponding to the same TMGI is taken as the second information.

It should be noted that, for the specific implementation manner of the first service, the second service, and the third service, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

S502, the relay terminal sends second information to the far-end terminal.

In this way, the relay terminal can send the second information of the third service matched with the first service in the paging information sent by the network device to the remote terminal, so that the remote terminal can establish or recover the RRC connection according to the second information.

Fig. 6 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by a relay terminal in the above-described communication system. As shown in fig. 6, the method may include:

s601, the relay terminal sends a paging terminal identification to the remote terminal.

The paging terminal identifier may be used for determining that the third service is a service matched with the first service, where the remote terminal is in an idle state or an inactive state, and the paging terminal identifier is matched with the remote terminal identifier of the remote terminal, and establishing or recovering RRC connection according to the second information.

It should be noted that, for the specific implementation manner of the paging terminal identifier, the first service, the remote terminal identifier, and the second information, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

In this way, the relay terminal can send the paging terminal identifier sent by the network device to the remote terminal, so that the remote terminal can be in an idle state or an inactive state, and the third service contained in the second information sent by the relay terminal is determined to be a service matched with the first service, and when the paging terminal identifier sent by the relay terminal is determined to be matched with the remote terminal identifier of the remote terminal, the RRC connection is established or recovered according to the second information.

Fig. 7 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by a remote terminal in the communication system described above. As shown in fig. 7, the method may include:

s701, the remote terminal sends first information to the relay terminal.

In some embodiments, the remote terminal may transmit the first information to the relay terminal through a direct link, which may be a link between the remote terminal and the relay terminal.

S702, the remote terminal receives second information sent by the relay terminal.

In some embodiments, the second information may include at least one TMGI.

It should be noted that, for the specific implementation of the second information, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

In some embodiments, the remote terminal may receive the second information transmitted by the relay terminal through a direct link, which may be a link between the remote terminal and the relay terminal.

S703, the remote terminal establishes or restores the RRC connection according to the second information.

In one implementation, the remote terminal sends the second information to the non-access stratum, where the second information is used by the non-access stratum to trigger an RRC connection establishment or recovery procedure.

By adopting the method, the remote terminal can send the first information to the relay terminal and receive the second information which is sent by the relay terminal and matches with the first service indicated by the first information, so that the remote terminal can establish or recover RRC connection according to the second information.

Fig. 8 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by a remote terminal in the communication system described above. As shown in fig. 8, the method may include:

s801, the remote terminal is in an idle state or an inactive state, and sends first information to the relay terminal.

In this way, the remote terminal may send the first information to the relay terminal in the idle state or the inactive state, so that the relay terminal may forward, to the remote terminal, the second information matching the first service indicated by the first information, so as to be able to establish or restore the RRC connection according to the second information.

Fig. 9 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by a remote terminal in the communication system described above. As shown in fig. 9, the method may include:

s901, the remote terminal determines that the third service is a service matched with the first service, and the remote terminal is in an idle state or an inactive state.

The first service may be a service that the remote terminal has joined.

It should be noted that, for the specific implementation of the second information and the first service, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

And S902, the remote terminal establishes or restores the RRC connection according to the second information.

In this way, the remote terminal can establish connection with the network device according to the second information when the remote terminal is in an idle state or an inactive state and the second information sent by the relay terminal is determined to be the information matched with the first service.

Fig. 10 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by a remote terminal in the communication system described above. As shown in fig. 10, the method may include:

s1001, the remote terminal receives the paging terminal identification sent by the relay terminal.

It should be noted that, for the specific implementation of the paging terminal identifier, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

S1002, the remote terminal determines that the third service is a service matched with the first service, the remote terminal is in an idle state or an inactive state, and the paging terminal identifier is matched with the remote terminal identifier of the remote terminal.

It should be noted that, for the specific implementation manner of the second information, the first service, and the remote terminal identifier, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

And S1003, the remote terminal establishes or restores the RRC connection according to the second information.

In this way, the remote terminal can establish or recover the RRC connection according to the second information when the remote terminal is in an idle state or inactive state, and it is determined that the third service included in the second information sent by the relay terminal is a service that matches the first service, and it is determined that the paging terminal identifier sent by the relay terminal matches the remote terminal identifier of the remote terminal.

Fig. 11 is a flow chart illustrating a connection establishment method according to an exemplary embodiment. The method may be performed by a network device in the communication system described above. As shown in fig. 11, the method may include:

s1101, the network device sends a paging message to the relay terminal.

In some embodiments, the paging message may include at least one TMGI.

In some embodiments, the paging message is used for the relay terminal to send second information to the remote terminal, where the second information includes information of a third service, where the third service is a service matched with the first service in the second service, the first service is a service that the remote terminal has joined, and the second information is used to trigger the remote terminal to establish or restore a radio resource control RRC connection.

In some embodiments, the second information may be used for the remote terminal to determine that the third service is a service matching the first service, and the remote terminal is in an idle state or an inactive state, and establish or restore an RRC connection according to the second information.

In other embodiments, the paging message may include a paging terminal identifier, where the paging terminal identifier is used by the remote terminal to determine that the third service is a service that matches the first service, and the remote terminal is in an idle state or an inactive state, and the paging terminal identifier matches a remote terminal identifier of the remote terminal, and establish or restore an RRC connection according to the second information.

It should be noted that, for the specific implementation manner of the first service, the second service, the third service, the second information, the paging message, the paging terminal identifier, and the remote terminal identifier, reference may be made to the specific description in the embodiment shown in fig. 3 of the present disclosure, which is not repeated herein.

By adopting the method, the network equipment can send the paging message to the relay terminal, so that the relay terminal can determine the second information matched with the first service added by the remote terminal from the paging message and send the second information to the remote terminal, and the remote terminal can establish or recover the RRC connection according to the second information.

In some embodiments of the present disclosure, a connection establishment method is provided, which may include at least one of the following embodiments:

in embodiment 1, the remote terminal transmits paging group information to the relay terminal.

In one implementation, the paging group information may carry first paging group information.

In some embodiments, the first paging group information may be carried in remoteueinfo information link.

In one implementation, the first paging group information may be a TMGI of a first service that the remote terminal has joined, which may be a multicast service or a broadcast service.

In some embodiments, the first paging group information may include one or more TMGIs.

In embodiment 2, the remote terminal sends paging group information to the relay terminal when in an idle state or inactive state.

In embodiment 3, the remote terminal receives the second paging group information sent by the relay terminal, and if it is determined that the second paging group information carries at least one TMGI and the first service added by the remote terminal are matched, and the remote terminal is in an inactive state, an RRC recovery procedure is triggered.

In one implementation, the second paging group information may carry one or more TMGIs.

In embodiment 4, the remote terminal receives the second paging group information and the paging record sent by the relay terminal, and if it is determined that the second paging group information carries at least one TMGI and the first service added by the remote terminal are matched, and the paging terminal identifier in the paging record is matched with the NG-5G-S-TMSI identifier of the remote terminal, the second paging group information is sent to a higher layer.

In some embodiments, the higher layer may be a non-access layer.

In some embodiments, the NG-5G-S-TMSI identity of the remote terminal may be pre-assigned to the remote terminal by a higher layer.

In embodiment 5, the remote terminal receives the second paging group information sent by the relay terminal, and if it is determined that the second paging group information carries at least one TMGI that matches the first service that the remote terminal has joined, and the remote terminal is in an idle state, the second paging group information is sent to a higher layer.

In embodiment 6, the relay terminal receives the first paging group information sent by the remote terminal, monitors the paging message sent by the network device, and if it is determined that at least one piece of second paging group information carried in the paging message matches with the first paging group information sent by the remote terminal, sends the second paging group information in the paging message to the remote terminal.

It should be noted that, the remote terminal in the above embodiments 1 to 6 may communicate with the network device through the relay terminal.

In an exemplary embodiment, the present disclosure further provides a communication system, which may include a remote terminal, a relay terminal, and a network device, wherein the remote terminal may perform the connection establishment method performed by the remote terminal in the foregoing embodiments of the present disclosure; the relay terminal may perform the connection establishment method performed by the relay terminal in the foregoing embodiments of the present disclosure; the network device may perform the method of establishing a connection through the network device performed in the foregoing embodiments of the present disclosure.

Fig. 12 is a block diagram of a relay terminal according to an exemplary embodiment. As shown in fig. 12, the relay terminal 153 may include:

A first receiving module 1201 configured to receive first information sent by a remote terminal, where the first information indicates a first service that the remote terminal has joined;

the first receiving module 1201 is further configured to receive a paging message sent by a network device, where the paging message includes information of a second service paged by the network device;

a first sending module 1202, configured to send second information to the remote terminal, where the second information includes information of a third service, where the third service is a service matched with the first service in the second service, and the second information is used to trigger the remote terminal to establish or restore a radio resource control RRC connection.

In some embodiments, the first sending module 1202 is configured to determine that the third service matching the first service exists in the second service; and sending the second information to the remote terminal.

In some embodiments, the second information is further used to trigger the remote terminal to determine that the third service is a service matching the first service, and the remote terminal is in an idle state or an inactive state.

For example, the remote terminal determines that the third service is a service matching the first service, and the remote terminal is in an idle state or an inactive state, and establishes or resumes the RRC connection according to the second information.

In some embodiments, the paging message includes a paging terminal identification; the second sending module 1202 is configured to send the paging terminal identifier to the remote terminal, where the paging terminal identifier is used by the remote terminal to determine that the third service is a service matched with the first service, the remote terminal is in an idle state or an inactive state, and the paging terminal identifier is matched with the remote terminal identifier of the remote terminal, and establish or restore RRC connection according to the second information.

In some embodiments, the remote terminal identity is a next generation 5G network-reduced temporary Mobile subscriber identity, NG-5G-S-TMSI.

In some embodiments, the first service comprises a multicast service or a broadcast service.

In some embodiments, the first information includes at least one temporary mobile group identity, TMGI.

In some embodiments, the second information includes at least one TMGI.

Fig. 13 is a block diagram of a remote terminal according to an exemplary embodiment. As shown in fig. 13, the remote terminal 151 may include:

a second transmitting module 1301 configured to transmit first information to a relay terminal, the first information indicating a first service to which the remote terminal has joined;

A second receiving module 1302, configured to receive second information sent by the relay terminal, where the second information includes information of a third service, where the third service is a service matched with the first service in the second service, and the second service is a service paged by the network device;

the processing module 1303 is configured to establish or recover a radio resource control RRC connection according to the second information.

In some embodiments, the first sending module 1301 is configured to send the first information to the relay terminal when the remote terminal is in an idle state or an inactive state.

In some embodiments, the processing module 1303 is configured to determine that the third service is a service that matches the first service, and the remote terminal is in an idle state or an inactive state; and establishing or recovering the Radio Resource Control (RRC) connection according to the second information.

In some embodiments, the second receiving module 1302 is configured to receive a paging terminal identifier sent by the relay terminal; the processing module 1303 is configured to determine that the third service is a service that matches the first service, and the remote terminal is in an idle state or an inactive state, and the paging terminal identifier matches a remote terminal identifier of the remote terminal; and establishing or recovering the Radio Resource Control (RRC) connection according to the second information.

In some embodiments, the second information includes at least one TMGI.

Fig. 14 is a block diagram of a network device, according to an example embodiment. As shown in fig. 14, the network device 160 may include:

a third sending module 1401, configured to send a paging message to a relay terminal, where the paging message includes information of a second service paged by the network device, where the paging message is used for sending, by the relay terminal, second information to a remote terminal, where the second information includes information of a third service, where the third service is a service matched with the first service in the second service, the first service is a service that has been added by the remote terminal, and the second information is used for triggering the remote terminal to establish or restore a radio resource control, and RRC, connection.

In some embodiments, the paging message includes a paging terminal identifier, where the paging terminal identifier is used by the remote terminal to determine that the third service is a service that matches the first service, and the remote terminal is in an idle state or an inactive state, and the paging terminal identifier matches the remote terminal identifier of the remote terminal, and establish or restore an RRC connection according to the second information.

In some embodiments, the second information includes at least one temporary mobile group identity, TMGI.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 15 is a block diagram of a communication device 3000, according to an example embodiment. The communication device 3000 may be a terminal device in the communication system shown in fig. 1 or a network device in the communication system.

Referring to fig. 15, the communication device 3000 may include one or more of the following components: a processing component 3002, a memory 3004, and a communication component 3006.

The processing component 3002 may be used to control overall operation of the communication device 3000, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 3002 may include one or more processors 3020 to execute instructions to perform all or part of the steps of the connection establishment method described above. Further, the processing component 3002 may include one or more modules to facilitate interactions between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate interaction between the multimedia component and the processing component 3002.

The memory 3004 is configured to store various types of data to support operations at the communication device 3000. Examples of such data include instructions for any application or method operating on the communication device 3000, contact data, phonebook data, messages, pictures, video, and the like. The memory 3004 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The communication component 3006 is configured to facilitate wired or wireless communication between the communication apparatus 3000 and other devices. The communication device 3000 may access a wireless network based on a communication standard, such as Wi-Fi,2G, 3G, 4G, 5G, 6G, NB-IOT, eMTC, etc., or a combination thereof. In one exemplary embodiment, the communication component 3006 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 3006 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the communication apparatus 3000 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for performing the above-described connection establishment method.

The communication apparatus 3000 may be a stand-alone electronic device or may be part of a stand-alone electronic device, for example, in one embodiment, the electronic device may be an integrated circuit (Integrated Circuit, IC) or a chip, where the integrated circuit may be one IC or a set of multiple ICs; the chip may include, but is not limited to, the following: GPU (Graphics Processing Unit, graphics processor), CPU (Central Processing Unit ), FPGA (Field Programmable Gate Array, programmable logic array), DSP (Digital Signal Processor ), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), SOC (System on Chip, SOC, system on Chip or System on Chip), etc. The integrated circuit or chip may be configured to execute executable instructions (or code) to implement the connection establishment method described above. The executable instructions may be stored on the integrated circuit or chip or may be retrieved from another device or apparatus, such as the integrated circuit or chip including a processor, memory, and interface for communicating with other devices. The executable instructions may be stored in the processor, which when executed by the processor, implement the connection establishment method described above; alternatively, the integrated circuit or chip may receive executable instructions through the interface and transmit them to the processor for execution to implement the connection establishment method described above.

In an exemplary embodiment, the present disclosure also provides a computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the connection establishment method provided by the present disclosure. The computer readable storage medium may be, for example, a non-transitory computer readable storage medium including instructions, for example, the memory 3004 including instructions executable by the processor 3020 of the communication device 3000 to perform the connection establishment method described above. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

In another exemplary embodiment, a computer program product is also provided, comprising a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described connection establishment method when executed by the programmable apparatus.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A connection establishment method, performed by a relay terminal, the method comprising:

2. The method of claim 1, wherein the transmitting the second information to the remote terminal comprises:

determining that the third service matched with the first service exists in the second service;

and sending the second information to the remote terminal.

3. The method according to claim 1 or 2, wherein the second information is further used to trigger the remote terminal to determine that the third service is a service matching the first service, and the remote terminal is in an idle state or an inactive state.

4. The method according to claim 1 or 2, characterized in that the paging message comprises a paging terminal identification; the method further comprises the steps of:

and sending the paging terminal identifier to the remote terminal, wherein the paging terminal identifier is used for the remote terminal to determine that the third service is a service matched with the first service, the remote terminal is in an idle state or an inactive state, the paging terminal identifier is matched with the remote terminal identifier of the remote terminal, and RRC connection is established or recovered according to the second information.

5. The method of claim 4, wherein the remote terminal identity is a next generation 5G network-reduced temporary mobile subscriber identity NG-5G-S-TMSI.

6. The method of any of claims 1-5, wherein the first service comprises a multicast service or a broadcast service.

7. The method according to any of claims 1-6, wherein the first information comprises at least one temporary mobile group identity, TMGI.

8. The method of any of claims 1-7, wherein the second information comprises at least one TMGI.

9. A method of connection establishment performed by a remote terminal, the method comprising:

10. The method of claim 9, wherein the sending the first information to the relay terminal comprises:

and the remote terminal is in an idle state or an inactive state, and sends the first information to the relay terminal.

11. The method according to claim 9 or 10, wherein said establishing or recovering an RRC connection according to said second information comprises:

determining that the third service is a service matched with the first service, and the remote terminal is in an idle state or an inactive state;

And establishing or recovering RRC connection according to the second information.

12. The method according to claim 9 or 10, characterized in that the method further comprises:

receiving a paging terminal identifier sent by the relay terminal;

the establishing or recovering the RRC connection according to the second information includes:

determining that the third service is a service matched with the first service, the remote terminal is in an idle state or an inactive state, and the paging terminal identifier is matched with a remote terminal identifier of the remote terminal;

13. The method of claim 12, wherein the remote terminal identity is a next generation 5G network-reduced temporary mobile subscriber identity NG-5G-S-TMSI.

14. The method according to any of claims 9-13, wherein the first traffic comprises multicast traffic or broadcast traffic.

15. The method according to any of claims 9-14, wherein the first information comprises at least one temporary mobile group identity, TMGI.

16. The method of any of claims 9-15, wherein the second information comprises at least one TMGI.

17. A method of connection establishment performed by a network device, the method comprising:

18. The method of claim 17, wherein the second information is further used to trigger the remote terminal to determine that the third service is a service that matches the first service, and wherein the remote terminal is in an idle state or an inactive state.

19. The method of claim 17, wherein the paging message includes a paging terminal identification, wherein the paging terminal identification is used by the remote terminal to determine that the third service is a service matching the first service, and the remote terminal is in an idle state or an inactive state, and wherein the paging terminal identification matches the remote terminal identification of the remote terminal, and wherein an RRC connection is established or restored according to the second information.

20. The method of claim 19, wherein the remote terminal identity is a next generation 5G network-reduced temporary mobile subscriber identity NG-5G-S-TMSI.

21. The method according to any of claims 17-20, wherein the first traffic comprises multicast traffic or broadcast traffic.

22. The method according to any of claims 17-21, wherein the second information comprises at least one temporary mobile group identity, TMGI.

23. A relay terminal, comprising:

24. A remote terminal, comprising:

25. A network device, comprising:

26. A communication device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the method of any one of claims 1 to 8, or the processor is configured to perform the steps of the method of any one of claims 9 to 16, or the processor is configured to perform the steps of the method of any one of claims 17 to 22.

27. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, perform the steps of the method according to any of claims 1 to 8, or which when executed by a processor, perform the steps of the method according to any of claims 9 to 16, or which when executed by a processor, perform the steps of the method according to any of claims 17 to 22.

28. A communication system, comprising:

a relay terminal performing the method of any one of claims 1 to 8;

a remote terminal performing the method of any of claims 9 to 16;

A network device performing the method of any of claims 17 to 22.