Satellite voice service access method, user equipment, network node and medium

Abstract

The invention provides a satellite voice service access method, user equipment, a network node and a medium. The satellite voice service access method comprises the following steps: sending capability information to a first network element or a third network element, wherein the capability information is used for indicating the capability of supporting a satellite voice service of user equipment; and accessing the satellite voice service based on the default bearer and the dedicated bearer of the satellite voice service, wherein the dedicated bearer of the satellite voice service is established in a registration or session establishment process of user equipment.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technologies, and for example, relates to a method for accessing satellite voice services, a user equipment, a network node, and a medium. Background Art

[0002] In an architecture for accessing the Narrow Band Internet of Things (NB-IoT) via satellites, during the process of executing IP Multimedia Subsystem (IMS) voice services, there are problems such as high call establishment latency, low bearer efficiency, and untimely resource allocation. Taking a geostationary satellite as an example, when a User Equipment (UE) accesses a GEO satellite network to carry out IMS voice services, it is required to complete the call establishment process within 30 seconds at a limited link rate of only 1–3 kbps. However, due to the unidirectional propagation delay of a geostationary satellite being as high as 270 milliseconds, if the existing IMS voice call process is still adopted, that is, only a default bearer is established during the UE (user equipment) registration or session establishment phase, and the establishment of a dedicated voice bearer is triggered after the IMS registration and SDP negotiation are completed, it will result in the overall voice call establishment latency far exceeding the user experience tolerance threshold (such as 30 seconds). Summary of the Invention

[0003] The present application provides a method for accessing satellite voice services, a user equipment, a network node, and a medium.

[0004] An embodiment of the present application provides a method for accessing satellite voice services, which is applied to a user equipment and includes:

[0005] Sending capability information to a first network element or a third network element, where the capability information is used to indicate the capability of the user equipment to support satellite voice services;

[0006] Accessing the satellite voice service based on the default bearer and dedicated bearer of the satellite voice service, where the dedicated bearer of the satellite voice service is established during the registration or session establishment process of the user equipment.

[0007] An embodiment of the present application further provides a method for accessing satellite voice services, which is applied to a second network element and includes:

[0008] Receiving an information acquisition request from a first network element or a third network element;

[0009] Sending user satellite voice subscription information to the first network element or the third network element, where the user satellite voice subscription information is used to indicate support for establishing a dedicated bearer for satellite voice services during the registration or session establishment process of the user equipment.

[0010] An embodiment of the present application further provides an access method for satellite voice services, which is applied to a first network element and includes:

[0011] Receiving capability information, where the capability information is used to indicate the capability of the user equipment to support satellite voice services;

[0012] Obtaining user satellite voice subscription information, where the user satellite voice subscription information is used to indicate supporting the establishment of a dedicated bearer for satellite voice services during the registration or session establishment process of the user equipment;

[0013] According to at least one of the capability information and the user satellite voice subscription information, during the registration or session establishment process of the user equipment, apply to establish a dedicated bearer for satellite voice services.

[0014] An embodiment of the present application further provides an access method for satellite voice services, which is applied to a third network element and includes:

[0015] Obtaining information sent by at least one of the first network element and the second network element;

[0016] According to the information sent by at least one of the first network element and the second network element, during the registration or session establishment process of the user equipment, establish a dedicated bearer for satellite voice services.

[0017] An embodiment of the present application further provides an access method for satellite voice services, which is applied to a fourth network element and includes:

[0018] Configuring a corresponding traffic flow template (TFT) for the dedicated bearer of the satellite voice service;

[0019] The dedicated bearer of the satellite voice service is established during the registration or session establishment process of the user equipment.

[0020] An embodiment of the present application further provides a user equipment, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where when the processor executes the program, the above-mentioned access method for satellite voice services is implemented.

[0021] An embodiment of the present application further provides a network node, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where when the processor executes the program, the above-mentioned access method for satellite voice services is implemented.

[0022] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above-mentioned access method for satellite voice services is implemented. Description of the Drawings

[0023] Figure 1 Flow chart of an access method for satellite voice service provided for one embodiment;

[0024] Figure 2 Flow chart of another access method for satellite voice service provided for one embodiment;

[0025] Figure 3 Flow chart of yet another access method for satellite voice service provided for one embodiment;

[0026] Figure 4 Flow chart of yet another access method for satellite voice service provided for one embodiment;

[0027] Figure 5 Flow chart of yet another access method for satellite voice service provided for one embodiment;

[0028] Figure 6 Schematic diagram of a process for establishing a dual bearer provided for one embodiment;

[0029] Figure 7 Schematic diagram of a process for establishing a dual Qos Flow provided for one embodiment;

[0030] Figure 8 Schematic diagram of another process for establishing a dual bearer provided for one embodiment;

[0031] Figure 9 Schematic diagram of the hardware structure of a user equipment provided for one embodiment;

[0032] Figure 10 Schematic diagram of the hardware structure of a network node provided for one embodiment. Detailed implementation manners

[0033] The present application will be described below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily. Additionally, it should be noted that for the sake of description, only the parts related to the present application rather than all the structures are shown in the accompanying drawings.

[0034] Currently, the process of carrying IMS voice services in the Evolved Packet Core (EPC) or 5G Core (5GC) usually relies on a dedicated bearer establishment mechanism triggered on demand. After the UE completes attachment and accesses the IMS Access Point Name (APN) through a Public Data Network (PDN) or a Protocol Data Unit (PDU) Connectivity Request, only one default bearer is established for IMS signaling transmission; during the call process, after the Proxy-Call Session Control Function (P-CSCF) receives Session Description Protocol (SDP) information and completes policy negotiation with the Policy and Charging Rules Function (PCRF) or Policy Control Function (PCF), the Packet data network Gateway (PGW) or Session Management Function (SMF) initiates the establishment of a voice dedicated bearer. This mechanism is applicable in terrestrial cellular networks, but for GEO satellite links accessed through NB-IoT, due to the round-trip propagation delay of up to 540 ms and limited link bandwidth, the IMS voice call establishment process will be significantly lengthened.

[0035] The relevant architecture for NB-IoT access to the EPC currently supports data transmission modes for both the control plane and the user plane. Control plane transmission relies on the S1-MME interface of the Mobility Management Entity (MME) and the Signaling Radio Bearer (SRB) 1bis channel, which is suitable for low-power transmission of small amounts of data; user plane transmission relies on the S1-U interface and allows up to two DRBs to be configured to support more efficient data bearers. However, in actual deployment, due to the mostly transparent payload forwarding architecture of GEO satellites, which does not have edge processing capabilities, the network response delay is further exacerbated.

[0036] In summary, in the satellite access scenario, if the traditional IMS call establishment process is still used, the entire process will result in a significant increase in end-to-end latency due to multiple satellite-ground interactions, making it difficult to meet the strict requirements for call establishment latency in voice services. Moreover, the session establishment process involves frequent satellite-ground interactions, affecting the availability and user experience of voice services.

[0037] The satellite voice service access method in the embodiments of this application can synchronously establish dual bearers (i.e., the default bearer and the dedicated voice bearer) during the UE's initial access and / or session establishment phase to avoid additional latency overhead caused by subsequent multiple signaling interactions.

[0038] In some embodiments, the terminal can be a device with wireless transceiver functions. It can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on the water (such as on a ship); or it can be deployed in the air (such as on an airplane, a balloon, or a satellite). The terminal can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and so on. The embodiments of this application do not limit the application scenarios. The terminal can sometimes also be referred to as a user, a user equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a mobile unit, a remote station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, or a UE device, etc. The embodiments of this application do not limit this.

[0039] In the embodiments of this application, the call establishment latency is mainly optimized in the following ways:

[0040] The UE carries information supporting satellite voice capabilities;

[0041] In the user subscription data, new information related to the user's subscription to satellite voice is added, including an indication and / or a subscription indicating that the user subscribes to the satellite voice service, or indicating that two bearers need to be established, or indicating the corresponding QoS, etc.;

[0042] The first network element or the third network element (such as MME, Access and Mobility Management Function (AMF), PDN GateWay (P-GW), or SMF) performs the establishment of a voice dedicated bearer based on the above information (not limited to the above information). The TFT can be pre-configured in the third network element, the fourth network element, or the second network element (such as P-GW, SMF, PCRF, PCF, Unified Data Management (UDM), or Home Subscriber Server (HSS)). Any combination of the above methods can achieve the pre-configuration of voice dedicated bearer resources in the initial access and / or session establishment phase, thereby avoiding the call establishment delay problem caused by the lag in bearer establishment timing in the traditional IMS process and improving the reachability and real-time performance of IMS voice services in the satellite scenario.

[0043] It should be noted that the first network element can be MME or AMF, the second network element can be HSS or UDM, the third network element can be P-GW or SMF, and the fourth network element can be PCRF or PCF.

[0044] Figure 1 A flowchart of an access method for satellite voice services provided for an embodiment. This method can be applied to a UE. As Figure 1 shown, the method provided in this embodiment includes step 110 and step 120.

[0045] In step 110, capability information is sent to the first network element or the third network element. The capability information is used to indicate the capability of the user equipment to support satellite voice services.

[0046] In step 120, access the satellite voice service based on the default bearer and dedicated bearer of the satellite voice service. The dedicated bearer of the satellite voice service is established during the registration or session establishment process of the user equipment.

[0047] In this embodiment, when the UE sends capability information to the first network element (such as MME or AMF) to indicate that the UE supports satellite voice services, a dual bearer can be established during the UE registration or session establishment process.

[0048] In an embodiment, the capability information is indicated by at least one of the following:

[0049] The Protocol Configuration Option (PCO) is used to provide the UE with some additional information related to the network it is connected to, and the ability information for supporting satellite voice services (i.e., SAT Voice Support) can be added thereto.

[0050] The network capability indication information is used to indicate the network capabilities of the UE, and the ability information for supporting satellite voice services can be added thereto.

[0051] In one embodiment, it further includes:

[0052] Step 130: Send an Access Point Name (APN) or a Data Network Name (DNN) to the first network element, where the APN or the DNN is the IP Multimedia Subsystem (IMS).

[0053] As an example, the APN / Data Network Name (DNN) to which the UE is connected can be extended to the IMS for Satellite (i.e., IMS for SAT), etc.

[0054] In one embodiment, the dedicated bearer and the default bearer of the satellite voice service are activated simultaneously.

[0055] Figure 2 It is a flowchart of a method for accessing a satellite voice service provided for an embodiment, and this method can be applied to a second network element, such as a Home Subscriber Server (HSS) or a Unified Data Management (UDM). As Figure 2 shown, the method provided in this embodiment includes:

[0056] Step 210, receive an information acquisition request from the first network element or the third network element.

[0057] Step 220, send user satellite voice subscription information to the first network element or the third network element, where the user satellite voice subscription information is used to indicate the support for establishing a dedicated bearer for the satellite voice service during the registration or session establishment process of the user equipment. For example, it can indicate that the user subscribes to the satellite voice service, or it can indicate the need to establish dual bearers, etc., or it can be the QoS information corresponding to the dual bearers.

[0058] In this embodiment, the second network element supports sending user satellite voice subscription-related information to other network elements (such as the first network element or the third network element, specifically such as a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF), a Packet Data Network Gateway (P-GW), or a Session Management Function (SMF)) to indicate that the UE subscribes to the satellite voice service, so that dual bearers can be established during the registration or session establishment process of the UE.

[0059] In one embodiment, the user satellite voice subscription information includes at least one of the following:

[0060] A first indication for indicating that a user subscribes to a satellite voice service;

[0061] A second indication for indicating that a dedicated bearer for the satellite voice service needs to be established;

[0062] Quality of Service (QoS) information corresponding to the dedicated bearer of the satellite voice service, such as specifying a QoS Class Identifier (QCI) and / or a QoS level (5G QoS Indicator, 5QI), etc.

[0063] As an example, on the basis that the user satellite voice subscription information includes the first indication and / or the second indication, it may further include carrying QoS information.

[0064] In one embodiment, an extended APN or DNN may also be used to indicate that the UE is allowed to subscribe to the IMS for SAT service, so that a dual bearer can be established during the UE registration or session establishment process.

[0065] In one embodiment, the dedicated bearer and the default bearer of the satellite voice service are activated simultaneously.

[0066] Figure 3 A flowchart of an access method for a satellite voice service provided for an embodiment. This method can be applied to a first network element, such as an MME or an AMF. As Figure 3 shown, the method provided in this embodiment includes the following steps:

[0067] Step 310: Receive capability information, where the capability information is used to indicate the capability of the user equipment to support the satellite voice service.

[0068] Step 320: Obtain user satellite voice subscription information, where the user satellite voice subscription information is used to indicate that a dedicated bearer for the satellite voice service is to be established during the registration or session establishment of the user equipment.

[0069] Step 330: Apply to establish a dedicated bearer for the satellite voice service during the registration or session establishment of the user equipment according to at least one of the capability information and the user satellite voice subscription information.

[0070] In this embodiment, during the registration or session establishment process, the first network element can determine whether an additional dedicated bearer needs to be established according to the UE's capability information and / or the user satellite voice subscription information sent by the second network element, and can also initiate the process of establishing an additional dedicated bearer. In addition, the first network element can also send this information to the third network element, and both the first network element and the third network element can initiate the process of establishing an additional dedicated bearer.

[0071] In one embodiment, it further includes:

[0072] Step 340: Determine a dedicated bearer for establishing the satellite voice service for the user equipment according to at least one of the following information: radio access technology (RAT) type; APN or DNN; the capability information; user satellite voice subscription information.

[0073] In one embodiment, the obtaining of the user satellite voice subscription information includes:

[0074] Send an information acquisition request to a second network element;

[0075] Receive the user satellite voice subscription information sent by the second network element;

[0076] The user satellite voice subscription information includes at least one of the following:

[0077] A first indication for indicating that the user subscribes to the satellite voice service;

[0078] A second indication for indicating that a dedicated bearer for the satellite voice service needs to be established;

[0079] Quality of service (QoS) information corresponding to the dedicated bearer of the satellite voice service.

[0080] In one embodiment, it further includes at least one of the following:

[0081] In the case where the RAT type is satellite access, determine to establish a dedicated bearer for the satellite voice service for the user equipment;

[0082] In the case where the APN or DNN is IMS (which can be IMS for SAT or other types of IMS), determine to establish a dedicated bearer for the satellite voice service for the user equipment;

[0083] In the case where the UE supports the satellite voice service, determine to establish a dedicated bearer for the satellite voice service for the user equipment;

[0084] In the case where the user satellite voice subscription information includes the first indication, determine whether a dedicated bearer needs to be established, and if so, determine to establish a dedicated bearer for the satellite voice service for the user equipment, where the first indication is used to indicate that the user subscribes to the satellite voice service;

[0085] In the case where the user satellite voice subscription information includes the second indication, determine to establish a dedicated bearer and a default bearer for the satellite voice service for the user equipment, where the second indication is used to indicate that a dedicated bearer for the satellite voice service needs to be established.

[0086] As an example, if the RAT type indicates satellite access and the accessed APN or DNN is IMS, and / or if the UE carries an indication of the ability to support satellite access, then:

[0087] If the user satellite voice subscription information obtained by the MME or AMF is the first indication indicating that the user subscribes to satellite services, then the MME or AMF can determine whether two bearers need to be established. If so, it initiates the subsequent process; or forwards the relevant information to the P-GW / SMF.

[0088] If the user satellite voice subscription information obtained by the MME or AMF is the second indication indicating that a dedicated bearer for satellite voice needs to be established, then the MME or AMF can directly initiate the subsequent process to establish the default bearer and the dedicated bearer.

[0089] If the subscription information obtained by the MME or AMF is IMS and this IMS is not in the list of APNs or DNNs restricted for access by the UE, then the MME or AMF can determine whether two bearers need to be established. If so, it initiates the subsequent process.

[0090] In one embodiment, the method further includes:

[0091] Step 350: Select a third network element that supports satellite voice according to at least one of the following information, and send a session establishment request to the third network element: RAT type; APN or DNN; capability information; user satellite voice subscription information.

[0092] In one embodiment, the dedicated bearer and the default bearer of the satellite voice service are activated simultaneously.

[0093] Figure 4 A flowchart of an access method for a satellite voice service provided for an embodiment. This method can be applied to a third network element, such as a P-GW or an SMF. As Figure 4 shown, the method provided in this embodiment includes:

[0094] Step 410, obtain the information sent by at least one of the first network element and the second network element.

[0095] Step 420, establish a dedicated bearer for the satellite voice service during the registration or session establishment process of the user equipment according to the information sent by at least one of the first network element and the second network element.

[0096] In this embodiment, during the registration or session establishment process, the third network element can determine whether an additional dedicated bearer needs to be established according to the information sent by the first network element and / or the second network element, and can also initiate the process of establishing an additional dedicated bearer.

[0097] In one embodiment, the information includes at least one of the following: RAT type; APN or DNN; the capability information; user satellite voice subscription information.

[0098] In one embodiment, for the information sent by at least one of the first network element and the second network element, during the registration or session establishment process of the user equipment, establishing a dedicated bearer for the satellite voice service includes at least one of the following:

[0099] When the RAT type is satellite access, establishing a dedicated bearer for the satellite voice service;

[0100] When the APN or DNN is IMS, establishing a dedicated bearer for the satellite voice service;

[0101] When the UE supports the satellite voice service, establishing a dedicated bearer for the satellite voice service;

[0102] When the user satellite voice subscription information includes a first indication, determining whether a dedicated bearer needs to be established, and establishing a dedicated bearer for the satellite voice service if needed;

[0103] When the user satellite voice subscription information includes a second indication, establishing a dedicated bearer and a default bearer for the satellite voice service.

[0104] In one embodiment, the method further includes:

[0105] Step 430: Obtain the media plane address corresponding to the dedicated bearer for the satellite voice service.

[0106] As an example, for the dedicated bearer, the P-GW or SMF can pre-configure the media plane address, such as the AGW address or an invalid address.

[0107] As an example, obtain the media plane address from the fourth network element.

[0108] In one embodiment, the dedicated bearer and the default bearer of the satellite voice service are activated simultaneously.

[0109] Figure 5 It is a flowchart of an access method for a satellite voice service provided for an embodiment. This method can be applied to the fourth network element, such as PCRF or PCF. As Figure 5 shown, the method provided in this embodiment includes:

[0110] Step 510, configure a corresponding TFT for the dedicated bearer of the satellite voice service; the dedicated bearer of the satellite voice service is established during the registration or session establishment process of the user equipment.

[0111] In this embodiment, the fourth network element may configure a corresponding TFT for the dedicated bearer of the satellite voice service, so as to support the establishment of an additional dedicated bearer during the registration or session establishment process.

[0112] In one embodiment, the TFT includes a media plane address corresponding to the dedicated bearer for the satellite voice service.

[0113] The access method for the satellite voice service of the present application will be exemplarily described below through some embodiments.

[0114] Note: In the following embodiments, the 4G network element is taken as an example for illustration, and the corresponding processes can also be applied to 5G. The corresponding relationships are as follows: MME corresponds to AMF, P-GW corresponds to SMF, HSS corresponds to UDM, PCRF corresponds to PCF, and APN corresponds to DNN. It should be noted that: in the 4G case, the user subscription data is sent by the HSS to the MME, and the MME then forwards part of the data to the P-GW. In the 5G case, the session-related subscription information can be directly sent by the UDM to the SMF for subsequent judgment without being forwarded by the AMF.

[0115] In one embodiment, during the PDN session establishment (including during the registration process), the MME or P-GW can additionally establish a dedicated bearer (4G scenario) according to the newly added satellite voice-related information (for judgment and).

[0116] Figure 6 A schematic diagram of a process for establishing a dual bearer provided for an embodiment is as follows Figure 6 As shown, the process of establishing a dual bearer mainly includes:

[0117] Step 1. The UE sends an Attach Request to the MME. The Attach Request message carries the UE ID, TAI, and RAT TYPE. Since the UE accesses from the satellite, the RAT Type indicates the RAT Type of satellite access, such as the RAT Type indicating that the UE accesses the network through a high-orbit satellite.

[0118] In the Attach Request, the UE further carries a PDN Connection Establishment Request. For the APN used for the PDN connection, as an example, if the UE requests to establish a PDN connection for IMS voice, the APN can be the IMS APN, that is, APN = IMS.

[0119] In one example, the UE sends UE Satellite Voice Capability information. This UE Satellite Voice Capability information can be carried as UE MM Capability in the attachment request, and can also be carried as SMCapability in the PCO cell in the PDN connection request.

[0120] Step 2. The MME obtains authentication data from the HSS and performs authentication on the UE;

[0121] Step 3. The UE and the MME negotiate and establish a Non-access stratum (NAS) security context.

[0122] Step 4a. The MME sends an Update Location Request (ULR) to the HSS to obtain the UE subscription data. It should be noted that for 5G, the location update request can be replaced by a request for obtaining subscription data.

[0123] Step 4b. The HSS returns an Update Location Answer (ULA) to the MME, carrying the UE subscription data.

[0124] The UE subscription data may include the user satellite voice subscription information of this UE. The user satellite voice subscription information may include at least one of the following:

[0125] Satellite voice service subscription indication (i.e., the first indication), used to indicate that this UE has subscribed to the satellite voice service;

[0126] Indication for establishing a satellite voice dedicated bearer (Satellite Voice Bearer Indication) (i.e., the second indication), used to indicate that a dedicated bearer for satellite voice is established by default for this UE;

[0127] QoS information for the satellite voice bearer, such as the QCI specified for the satellite voice bearer.

[0128] As an example, the UE subscription data may only include the satellite voice service subscription indication. Then, in subsequent steps, the MME or the PGW can, based on this indication, determine that an additional dedicated bearer for satellite voice (different from the default bearer or the Default Bearer) needs to be established for the UE when establishing a PDN connection for the UE. The QoS characteristics (such as QCI and / or ARP, etc.) of this dedicated bearer can be determined by the MME or the PGW according to local policies.

[0129] As an example, the UE subscription data may only contain an indication for establishing a dedicated bearer for satellite voice. Then, in subsequent steps, the MME or PGW may, based on this indication, additionally establish a dedicated bearer for satellite voice for the UE while establishing a PDN connection for the UE. The QoS characteristics (such as QCI and / or ARP, etc.) of this dedicated bearer are determined by the MME or PGW according to local policies.

[0130] As an example, the UE subscription data may only contain QoS information for the satellite voice bearer. Then, the MME or PGW, based on this indication, determines that a dedicated bearer for satellite voice needs to be additionally established for the UE while establishing a PDN connection for the UE, and sets the QoS information indicated in the QoS information for the dedicated bearer of satellite voice.

[0131] In other instances, the UE subscription data may contain a subscription indication for satellite voice services and QoS information, or may also contain an indication for establishing a dedicated bearer for satellite voice and QoS information, etc.

[0132] Step 5. The MME, based on the information obtained, such as the RAT type, APN, satellite voice subscription information in the UE subscription data (specifically as in step 4b), and the UE's satellite voice support capability, determines that a PDN connection for satellite voice needs to be established for the UE and selects a P-GW that supports satellite voice services.

[0133] Step 6. The MME sends a session establishment request (Create Session Request) to the P-GW, which may carry basic information such as the RATType and APN.

[0134] As an example, the MME also carries satellite voice bearer information in the session establishment request. The satellite voice bearer information can be any one or more combinations of the UE subscription data in step 4b, or can also be a "satellite voice bearer establishment indication" comprehensively specified by the MME based on the RAT Type of satellite access, the APN requested by the UE, the UE's satellite voice support capability, and / or the satellite voice subscription information in the UE subscription data.

[0135] As an example, if in step 1, the UE carries the UE's satellite voice support capability in the PCO, then the UE capability in this PCO will be relayed by the MME to the PGW in the session establishment request.

[0136] Step 7a. Optionally, if the network uses dynamic PCC, the P-GW establishes a policy association with the PCRF and obtains a PCC rule for satellite voice services.

[0137] In this step, the PGW may send the satellite access RAT Type obtained in step 6 and / or the APN requested by the UE and / or the satellite voice bearer information (or satellite voice bearer establishment indication) carried by the MME to the PCRF, and the PCRF comprehensively judges the PCC rules for satellite voice services based on the said information.

[0138] As an example, after obtaining the above information, the PCRF instructs the PGW to establish a dedicated bearer for satellite voice services and configures a specific TFT for this dedicated bearer, and this TFT contains the IP address of the network element that processes voice media on the network side. Specifically, the first network element that processes voice media on the IMS side may be the IMS AGW, then the address information of the IMS AGW that processes satellite voice is configured in the TFT, which can point to the IMS AGW that supports satellite voice.

[0139] As an example, the PGW may obtain the address of the IMS AGW for satellite voice services from the DNS server, PCRF / PCF, and / or P-CSCF.

[0140] Step 7b. Optionally, if dynamic PCC is not used in the network, or the PGW uses local policies to generate PCC policies, the PGW generates PCC policies for satellite voice services according to the information obtained in step 6.

[0141] As an example, the PGW may comprehensively judge the PCC rules for satellite voice services according to the satellite access RAT Type obtained in step 6, the APN requested by the UE, and / or the satellite voice bearer information (or satellite voice bearer establishment indication) carried by the MME, and the UE satellite voice support capability (which can be directly carried by the UE to the PGW in the PCO or carried by the MME to the PGW in the session establishment request).

[0142] As an example, based on the above information, the PGW decides to establish a dedicated bearer for satellite voice services and configures a specific TFT for this dedicated bearer, and this TFT contains the IP address of the network element that processes voice media on the network side. Specifically, the first network element that processes voice media on the IMS side may be the IMS AGW, then the address information of the IMS AGW that processes satellite voice is configured in the TFT, which can point to multiple IMS AGWs that support satellite voice.

[0143] As an example, the PGW may be locally configured with the address of the IMS AGW for satellite voice services, so that it can configure the correct TFT for the dedicated bearer for satellite voice.

[0144] Step 8. The P-GW returns a session establishment response to the MME, carrying the UE IP and the EPS bearer information established for the UE.

[0145] In this step, the EPS bearers established by the PGW for the UE include: the default bearer and the dedicated bearer for satellite voice (Satellite Voice Bearer). Moreover, a suitable TFT is configured for the dedicated bearer for satellite voice, pointing to the IP address of the network element that processes the voice media on the network side.

[0146] Step 9. Activate the default bearer and the dedicated bearer. This step includes the RAN (eNB) generating corresponding radio access bearers (Radio Access Bearer, RAB) according to the EPS bearer information provided by the PGW, where a data radio bearer (Data Radio Bearer, DRB) for satellite voice is generated for the dedicated bearer for satellite voice. This step also includes the UE binding the EPS bearer and the data radio bearer DRB to itself according to the EPS bearer information provided by the PGW.

[0147] In one embodiment, during the PDU session establishment process, the SMF makes a judgment based on the newly added satellite voice-related information and establishes a dual bearer (5G).

[0148] In this embodiment, the SMF obtains session management subscription data (Session Management Subscription Data); only the SMF can make a judgment, and the AMF only transmits information such as Satellite RAT Type, UE Capability, and / or DNN; all default bearers in 5G are replaced with default QoS Flows, and dedicated bearers are replaced with guaranteed bit rate (Guaranteed Bit Rate, GBR) QoS Flows.

[0149] Figure 7 A schematic diagram of a process for establishing a dual QoS Flow provided for an embodiment. As Figure 7 shown, the process of establishing a dual QoS Flow mainly includes:

[0150] Step 1. The UE executes the registration process. The UE sends a registration request (Registration Request) to the AMF, where the registration request message carries the UE ID, TAI, and RAT TYPE. In this embodiment, since the UE accesses from a satellite, the RAT Type is indicated as the RAT Type for satellite access, such as the RAT Type indicating that the UE accesses the network through a geostationary satellite.

[0151] As an example, the registration request may also carry information about the UE's satellite voice capability (UE Satellite VoiceCapability).

[0152] Step 2. The UE sends a PDU session establishment request to the AMF, carrying the DNN indication as IMS, and the N1 SM container includes PCO, indicating the UE's support capability for satellite voice.

[0153] Step 3. The AMF selects an SMF that supports satellite voice services based on the information obtained, such as RAT type, DNN, and / or UE satellite voice support capability.

[0154] Step 4. The AMF sends a create session request to the SMF, carrying the RAT type, DNN, and / or indication of the UE's support for satellite voice capability, as well as other original information (if any).

[0155] Step 5a. The SMF sends a request to the UDM to obtain the subscription data of the UE to obtain the UE's subscription data.

[0156] Step 5b. The UDM returns a response to the SMF to obtain the subscription data, which may carry the UE's subscription data. The UE subscription data may include the user satellite voice subscription information of this UE. For details, refer to the location update response in the above embodiments.

[0157] Step 6a. The SMF establishes a policy association with the PCF to obtain PCC rules corresponding to two QoS Flows, etc. For details, refer to Figure 6 Step 7a in

[0158] Step 6b. The SMF generates a PCC policy for satellite voice services based on the information obtained in Step 4. For details, refer to Figure 6 Step 7b in

[0159] Step 7. The SMF returns a create session response to the AMF, carrying the UE IP and the QoS Flow information established for the UE.

[0160] In this step, the QoS Flows established by the SMF for the UE include: the default QoS Flow (or the default QoS Flow, Default QoS Flow), and the GBR QoS Flow for satellite voice (Satellite Voice Bearer). Moreover, a suitable TFT is configured for the satellite voice GBR QoS Flow, pointing to the IP address of the network element that processes the voice media on the network side.

[0161] Step 8. Activate the default QoS Flow and the GBR QoS Flow simultaneously. For details, refer toFigure 6 Step 9 in

[0162] In one embodiment, during the PDN session establishment process, the MME makes a judgment based on the newly added APN and establishes a dual bearer (4G).

[0163] Figure 8 A schematic diagram of a process for establishing a dual bearer provided for one embodiment. As Figure 8 shown, the process of establishing a dual bearer mainly includes:

[0164] Step 1. The UE sends a registration request to the MME through the RAN, including a session establishment request. This message carries UE identity information, TAI, the accessed RAT TYPE, and / or the APN of this session, where the APN is indicated as IMS for SAT.

[0165] Step 2. The MME obtains the authentication vector from the HSS, and then the UE and the MME complete the two-way authentication between the network and the user based on the authentication vector.

[0166] Step 3. The UE and the MME negotiate and establish a NAS security context.

[0167] Step 4a. The MME sends a location update request or a subscription data request to the HSS to obtain the UE's subscription data. For details, please refer to Figure 6 Step 4a in Figure 7 Step 5a in

[0168] Step 4b. The HSS returns a location update response or a subscription data response to the MME, and the carried subscription APN indication includes IMS for SAT. For details, please refer to Figure 6 Step 4b in Figure 7 Step 5b in

[0169] Step 5. The MME selects a P-GW that supports satellite voice based on the RAT type, the APN sent by the UE and subscribed to, and other original information (if any). If the RAT type indicates satellite access at this time and the accessible APN indication is IMS for SAT, the MME determines to establish two bearers.

[0170] Step 6. The MME sends a session establishment request to the P-GW, which carries information related to the two bearers, including UE id, APN, and / or corresponding QoS, etc. The P-GW needs to pre-configure an address for the dedicated bearer, including the AGW address or an invalid address (in this case, it needs to be modified to a valid address later).

[0171] Step 7. The P-GW establishes a policy association with the PCRF, obtains PCC rules corresponding to the two bearers, etc., and needs to configure the corresponding TFT for the dedicated bearer (if the TFT is not included in the P-GW, it can be obtained by the PCRF).

[0172] Step 8. The P-GW returns a session establishment response to the MME, carrying information such as the UE IP and bearer ID.

[0173] Step 9. Activate the default bearer and the dedicated bearer simultaneously.

[0174] The embodiment of the present application also provides an access device for satellite voice services. The access device for satellite voice services includes:

[0175] A first sending module, configured to send capability information to a first network element or a third network element, where the capability information is used to indicate the capability of the user equipment to support satellite voice services;

[0176] An access module, configured to access the satellite voice service based on the default bearer and the dedicated bearer of the satellite voice service, where the dedicated bearer of the satellite voice service is established during the registration or session establishment process of the user equipment.

[0177] In one embodiment, the capability information is indicated by at least one of the following: PCO; network capability indication information.

[0178] In one embodiment, the device further includes:

[0179] A second sending module, configured to send an access point name APN or a data network name DNN to the first network element, where the APN or the DNN is an IP multimedia subsystem IMS.

[0180] In one embodiment, the dedicated bearer and the default bearer of the satellite voice service are activated simultaneously.

[0181] The access device for satellite voice services proposed in this embodiment and the access method for satellite voice services proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be referred to in any of the above embodiments, and this embodiment has the same beneficial effects as the access method for executing satellite voice services.

[0182] The embodiment of the present application also provides an access device for satellite voice services. The access device for satellite voice services includes:

[0183] A determination module, configured to receive an information acquisition request from a first network element or a third network element;

[0184] A sending module, configured to send user satellite voice subscription information to the first network element or the third network element, where the user satellite voice subscription information is used to indicate support for establishing a dedicated bearer for satellite voice services during the registration or session establishment process of a user equipment.

[0185] In one embodiment, the user satellite voice subscription information includes at least one of the following:

[0186] A first indication, used to indicate that the user subscribes to satellite voice services;

[0187] A second indication, used to indicate that a dedicated bearer for satellite voice services needs to be established;

[0188] Quality of Service (QoS) information corresponding to the dedicated bearer of the satellite voice service.

[0189] In one embodiment, the dedicated bearer of the satellite voice service and the default bearer are activated simultaneously.

[0190] The access device for satellite voice services proposed in this embodiment and the access method for satellite voice services proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be referred to in any of the above embodiments, and this embodiment has the same beneficial effects as the access method for executing satellite voice services.

[0191] An embodiment of the present application further provides an access device for satellite voice services. The access device for satellite voice services includes:

[0192] A receiving module, configured to receive capability information, where the capability information is used to indicate the capability of the user equipment to support satellite voice services;

[0193] An obtaining module, configured to obtain user satellite voice subscription information, where the user satellite voice subscription information is used to indicate support for establishing a dedicated bearer for satellite voice services during the registration or session establishment process of the user equipment;

[0194] An application module, configured to apply for establishing a dedicated bearer for satellite voice services during the registration or session establishment process of the user equipment according to at least one of the capability information and the user satellite voice subscription information.

[0195] In one embodiment, the device further includes:

[0196] A determination module, configured to determine to establish the dedicated bearer for the satellite voice service for the user equipment according to at least one of the following information: Radio Access Technology (RAT) type; APN or DNN; the capability information; user satellite voice subscription information.

[0197] In one embodiment, the obtaining module is specifically configured to:

[0198] Send an information acquisition request to a second network element;

[0199] Receive the user satellite voice subscription information sent by the second network element;

[0200] The user satellite voice subscription information includes at least one of the following:

[0201] A first indication for indicating that a user subscribes to a satellite voice service;

[0202] A second indication for indicating that a dedicated bearer for the satellite voice service needs to be established;

[0203] Quality of Service (QoS) information corresponding to the dedicated bearer of the satellite voice service.

[0204] In one embodiment, the determination module is specifically set to at least one of the following:

[0205] In the case where the RAT type is satellite access, determine to establish a dedicated bearer for the satellite voice service for the user equipment;

[0206] In the case where the APN or DNN is IMS, determine to establish a dedicated bearer for the satellite voice service for the user equipment;

[0207] In the case where the UE supports the satellite voice service, determine to establish a dedicated bearer for the satellite voice service for the user equipment;

[0208] In the case where the user satellite voice subscription information includes a first indication, determine whether a dedicated bearer needs to be established, and if so, determine to establish a dedicated bearer for the satellite voice service for the user equipment, where the first indication is used to indicate that a user subscribes to the satellite voice service;

[0209] In the case where the user satellite voice subscription information includes a second indication, determine to establish a dedicated bearer and a default bearer for the satellite voice service for the user equipment, where the second indication is used to indicate that a dedicated bearer for the satellite voice service needs to be established.

[0210] In one embodiment, the apparatus further includes: a selection module configured to select a third network element that supports satellite voice according to at least one of the following information and send a session establishment request to the third network element: RAT type; APN or DNN; the capability information; user satellite voice subscription information.

[0211] In one embodiment, the dedicated bearer and the default bearer of the satellite voice service are activated simultaneously.

[0212] The access device for satellite voice services proposed in this embodiment and the access method for satellite voice services proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as the access method for executing satellite voice services.

[0213] An embodiment of the present application further provides an access device for satellite voice services. The access device for satellite voice services includes:

[0214] An acquisition module, configured to acquire information sent by at least one of a first network element and a second network element;

[0215] A establishment module, configured to establish a dedicated bearer for satellite voice services during the registration or session establishment process of a user equipment according to the information sent by at least one of the first network element and the second network element.

[0216] In one embodiment, the information includes at least one of the following: RAT type; APN or DNN; the capability information; user satellite voice subscription information.

[0217] In one embodiment, the establishment module is specifically configured as at least one of the following:

[0218] In the case where the RAT type is satellite access, establish the dedicated bearer for the satellite voice service;

[0219] In the case where the APN or DNN is IMS, establish the dedicated bearer for the satellite voice service;

[0220] In the case where the UE supports satellite voice services, establish the dedicated bearer for the satellite voice service;

[0221] In the case where the user satellite voice subscription information includes a first indication, determine whether a dedicated bearer needs to be established, and establish the dedicated bearer for the satellite voice service if necessary;

[0222] In the case where the user satellite voice subscription information includes a second indication, establish the dedicated bearer and the default bearer for the satellite voice service.

[0223] In one embodiment, the device further includes:

[0224] An address acquisition module, configured to acquire the media plane address corresponding to the dedicated bearer for the satellite voice service.

[0225] In one embodiment, the dedicated bearer and the default bearer for the satellite voice service are activated simultaneously.

[0226] The access device for satellite voice services proposed in this embodiment and the access method for satellite voice services proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be referred to in any of the above embodiments, and this embodiment has the same beneficial effects as the access method for satellite voice services.

[0227] This application embodiment also provides an access device for satellite voice services. The access device for satellite voice services includes:

[0228] A configuration module, configured to configure a corresponding TFT for the dedicated bearer of the satellite voice service; the dedicated bearer of the satellite voice service is established during the registration or session establishment process of the user equipment.

[0229] In one embodiment, the TFT includes a media plane address corresponding to the dedicated bearer for the satellite voice service.

[0230] The access device for satellite voice services proposed in this embodiment and the access method for satellite voice services proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be referred to in any of the above embodiments, and this embodiment has the same beneficial effects as the access method for satellite voice services.

[0231] This application embodiment also provides a user equipment, Figure 9 which is a schematic diagram of the hardware structure of a user equipment provided in one embodiment, as Figure 9 shown. The user equipment provided in this application includes a processor 610 and a memory 620; the processor 610 in this user equipment can be one or more, Figure 9 and here one processor 610 is taken as an example; the memory 620 is configured to store one or more programs; the one or more programs are executed by the one or more processors 610, so that the one or more processors 610 implement the access method for satellite voice services as described in this application embodiment.

[0232] The user equipment further includes: a communication device 630, an input device 640, and an output device 650.

[0233] The processor 610, memory 620, communication device 630, input device 640, and output device 650 in the user equipment can be connected by a bus or other means, Figure 9 and here the connection by bus is taken as an example.

[0234] The input device 640 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function control of the user equipment. The output device 650 can include a display device such as a display screen.

[0235] The communication device 630 may include a receiver and a transmitter. The communication device 630 is configured to perform information transceiver communication under the control of the processor 610.

[0236] The memory 620, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the satellite voice service access method described in the embodiments of the present application. The memory 620 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the user equipment, etc. In addition, the memory 620 may include high-speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 620 may further include a memory remotely provided with respect to the processor 610, and these remote memories can be connected to the user equipment through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0237] The embodiments of the present application also provide a network node. Figure 10 As shown in the schematic hardware structure diagram of a network node provided for an embodiment, Figure 10 The network node provided by the present application includes a processor 710 and a memory 720; the processor 710 in the network node can be one or more. Figure 10 Taking one processor 710 as an example; the memory 720 is configured to store one or more programs; the one or more programs are executed by the one or more processors 710, so that the one or more processors 710 implement the satellite voice service access method described in the embodiments of the present application.

[0238] The network node further includes: a communication device 730, an input device 740, and an output device 750.

[0239] The processor 710, the memory 720, the communication device 730, the input device 740, and the output device 750 in the network node can be connected through a bus or other means. Figure 10 Taking the connection through a bus as an example.

[0240] The input device 740 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function control of the network node. The output device 750 may include a display device such as a display screen.

[0241] The communication device 730 may include a receiver and a transmitter. The communication device 730 is configured to perform information transceiver communication under the control of the processor 710.

[0242] The memory 720, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the satellite voice service access method described in the embodiments of the present application. The memory 720 can include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of network nodes, etc. In addition, the memory 720 can include high-speed random access memory and can also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 720 can further include a memory remotely set relative to the processor 710, and these remote memories can be connected to the network node through a network. Examples of the above networks include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof. Embodiments of the present application also provide a storage medium storing a computer program, and when the computer program is executed by a processor, it implements the satellite voice service access method described in any one of the embodiments of the present application.

[0243] Embodiments of the present application also provide a computer program product, including computer programs / instructions, and when the computer programs / instructions are executed by a processor, they implement the satellite voice service access method described in any one of the embodiments of the present application.

[0244] The computer storage medium of the embodiments of the present application can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the computer-readable storage medium include: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the above. The computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device.

[0245] A computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, carrying computer-readable program code. Such a propagated data signal may take many forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device.

[0246] The program code contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical fiber cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.

[0247] The computer program code for performing the operations of this application may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0248] The embodiments of this application also provide a computer program product, including a computer program / instructions, which when executed by a processor implement the access method for satellite voice services as described in any of the foregoing embodiments.

[0249] As described above, the above are only exemplary embodiments of this application and are not intended to limit the protection scope of this application.

[0250] Those skilled in the art should understand that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable network browser, or a vehicle-mounted mobile station.

[0251] Generally speaking, the various embodiments of this application may be implemented in hardware or a dedicated circuit, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that can be executed by a controller, a microprocessor, or other computing devices, although this application is not limited thereto.

[0252] Embodiments of the present application can be implemented by a data processor of a mobile device executing computer program instructions, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0253] Any block diagram of a logical process in the drawings of the present application can represent program steps, or can represent interconnected logical circuits, modules and functions, or can represent a combination of program steps and logical circuits, modules and functions. The computer program can be stored in a memory. The memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (such as digital video disc (DVD) or compact disk (CD), etc.). The computer-readable medium can include a non-transitory storage medium. The data processor can be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FGPA), and a processor based on a multi-core processor architecture.

[0254] By way of illustrative and non-limiting examples, a detailed description of exemplary embodiments of the present application has been provided above. However, various modifications and adaptations of the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and the claims, without departing from the scope of the present application. Accordingly, the proper scope of the present application will be determined in accordance with the claims.

Claims

1. A method for accessing satellite voice services, applied to a user equipment, characterized in that, including: sending capability information to a first network element or a third network element, where the capability information is used to indicate the user equipment's capability to support satellite voice services; accessing the satellite voice service based on the default bearer and dedicated bearer of the satellite voice service, where the dedicated bearer of the satellite voice service is established during the registration or session establishment process of the user equipment.

2. The method according to claim 1, characterized in that The capability information is indicated by at least one of the following: Protocol Configuration Option (PCO); Network Capability Indication Information.

3. The method according to claim 1, characterized in that It further includes: sending an Access Point Name (APN) or a Data Network Name (DNN) to the first network element, where the APN or the DNN is the IP Multimedia Subsystem (IMS).

4. The method according to claim 1, wherein The dedicated bearer and default bearer of the satellite voice service are activated simultaneously.

5. A method for accessing a satellite voice service, applied to a second network element, characterized in that, including: receiving an information acquisition request from the first network element or the third network element; sending user satellite voice subscription information to the first network element or the third network element, where the user satellite voice subscription information is used to indicate support for establishing a dedicated bearer for the satellite voice service during the registration or session establishment process of the user equipment.

6. The method according to claim 5, wherein The user satellite voice subscription information includes at least one of the following: a first indication for indicating that the user subscribes to the satellite voice service; a second indication for indicating that a dedicated bearer for the satellite voice service needs to be established; Quality of Service (QoS) information corresponding to the dedicated bearer of the satellite voice service.

7. The method according to claim 5, characterized in that The dedicated bearer and default bearer of the satellite voice service are activated simultaneously.

8. A method for accessing a satellite voice service, applied to a first network element, characterized in that including: receiving capability information, where the capability information is used to indicate the user equipment's capability to support satellite voice services; acquiring user satellite voice subscription information, where the user satellite voice subscription information is used to indicate support for establishing a dedicated bearer for the satellite voice service during the registration or session establishment process of the user equipment; applying to establish a dedicated bearer for the satellite voice service during the registration or session establishment process of the user equipment according to at least one of the capability information and the user satellite voice subscription information.

9. The method according to claim 8, wherein It further includes: determining to establish the dedicated bearer for the satellite voice service for the user equipment according to at least one of the following information: Radio Access Technology (RAT) type; APN or DNN; the capability information; user satellite voice subscription information.

10. The method according to claim 8, characterized in that The acquiring of the user satellite voice subscription information includes: sending an information acquisition request to a second network element; receiving the user satellite voice subscription information sent by the second network element; The user satellite voice subscription information includes at least one of the following: a first indication for indicating that the user subscribes to the satellite voice service; a second indication for indicating that a dedicated bearer for the satellite voice service needs to be established; Quality of Service (QoS) information corresponding to the dedicated bearer of the satellite voice service.

11. The method according to claim 9, characterized in that, Determining to establish the dedicated bearer for the satellite voice service for the user equipment according to at least one of the following information includes at least one of the following: in the case where the RAT type is satellite access, determining to establish the dedicated bearer for the satellite voice service for the user equipment; in the case where the APN or DNN is IMS, determining to establish the dedicated bearer for the satellite voice service for the user equipment; in the case where the UE supports the satellite voice service, determining to establish the dedicated bearer for the satellite voice service for the user equipment; When the user satellite voice subscription information includes a first indication, determine whether a dedicated bearer needs to be established, and if so, determine to establish a dedicated bearer for the satellite voice service for the user equipment, where the first indication is used to indicate that the user subscribes to the satellite voice service; When the user satellite voice subscription information includes a second indication, determine to establish a dedicated bearer and a default bearer for the satellite voice service for the user equipment, where the second indication is used to indicate that a dedicated bearer for the satellite voice service needs to be established.

12. The method according to claim 8, wherein Further includes: Select a third network element that supports satellite voice according to at least one of the following information, and send a session establishment request to the third network element: RAT type; APN or DNN; the capability information; the user satellite voice subscription information.

13. The method according to claim 8, characterized in that, The dedicated bearer and the default bearer of the satellite voice service are activated simultaneously.

14. An access method for satellite voice services, characterized in that, Applied to the third network element, includes: Obtain information sent by at least one of the first network element and the second network element; According to the information sent by at least one of the first network element and the second network element, establish a dedicated bearer for the satellite voice service during the registration or session establishment process of the user equipment.

15. The method according to claim 14, characterized in that, The information includes at least one of the following: RAT type; APN or DNN; capability information; user satellite voice subscription information.

16. The method according to claim 15, wherein The establishing a dedicated bearer for the satellite voice service during the registration or session establishment process of the user equipment according to the information sent by at least one of the first network element and the second network element includes at least one of the following: When the RAT type is satellite access, determine to establish a dedicated bearer for the satellite voice service for the user equipment; When the APN or DNN is IMS, determine to establish a dedicated bearer for the satellite voice service for the user equipment; When the UE supports the satellite voice service, determine to establish a dedicated bearer for the satellite voice service for the user equipment; When the user satellite voice subscription information includes a first indication, determine whether a dedicated bearer needs to be established, and if so, establish the dedicated bearer for the satellite voice service; When the user satellite voice subscription information includes a second indication, establish the dedicated bearer and the default bearer for the satellite voice service.

17. The method according to claim 14, wherein Further includes: Obtain the media plane address corresponding to the dedicated bearer for the satellite voice service.

18. The method according to claim 14, wherein The dedicated bearer and the default bearer of the satellite voice service are activated simultaneously.

19. An access method for satellite voice services, characterized in that, Applied to the fourth network element, includes: Configure a corresponding traffic filtering template TFT for the dedicated bearer of the satellite voice service; The dedicated bearer of the satellite voice service is established during the registration or session establishment process of the user equipment.

20. The method according to claim 19, wherein The TFT includes the media plane address corresponding to the dedicated bearer for the satellite voice service.

21. A user equipment, characterized in that, Includes: A memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the access method for the satellite voice service as described in any one of claims 1-4.

22. A network node, characterized in that, Includes: A memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the access method for satellite voice services according to any one of claims 5-20.

23. An access system for satellite voice services, characterized in that, Including: The user equipment according to claim 21, and the network node according to claim 22, wherein the network node includes a first network element, a second network element, a third network element and a fourth network element.

24. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the access method for satellite voice services according to any one of claims 1-20.

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