Communication method, communication device, communication system and storage medium
Patent Information
- Application Number
- PCT/CN2025/086032
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-10-01
Smart Images
Figure CN2025086032_01102026_PF_FP_ABST
Abstract
Description
Communication methods, communication equipment, communication systems, storage media Technical Field
[0001] This disclosure relates to the field of communication technology, and in particular to communication methods, communication devices, communication systems, and storage media. Background Technology
[0002] In IP Multimedia Subsystem (IMS) voice communication, signaling information and service information are typically transmitted. Signaling information can include data responsible for session establishment, modification, and release, such as SIP (Session Initiation Protocol) messages like INVITE, ACK, and BYE. Service information, also known as data information, can include or carry the actual voice data stream (RTP / RTCP) to provide real-time voice communication. Summary of the Invention
[0003] This disclosure provides communication methods, communication devices, communication systems, and storage media.
[0004] According to a first aspect of the embodiments of this disclosure, a communication method is provided, executed by a terminal, the method comprising:
[0005] A preset message is sent to a network device. The preset message is used to carry service information of a preset service or signaling information of the preset service. The preset message indicates that the preset message carries the service information or the signaling information.
[0006] According to a second aspect of the embodiments of this disclosure, a communication method is provided, performed by a network device, the method comprising:
[0007] A preset message sent by a receiving terminal is used to carry service information of a preset service or signaling information of the preset service; wherein, the preset message indicates that the preset message carries the service information or the signaling information.
[0008] According to a third aspect of the present disclosure, a communication method is provided for a communication system, the communication system including a terminal and a network device, the method comprising:
[0009] The terminal sends a preset message to the network device. The preset message is used to carry service information of a preset service or signaling information of the preset service. The preset message indicates that it carries the service information or the signaling information.
[0010] According to a fourth aspect of the embodiments of this disclosure, a terminal is provided, comprising:
[0011] The transceiver module is used to send a preset message to a network device. The preset message is used to carry service information of a preset service or signaling information of the preset service. The preset message indicates that the preset message carries the service information or the signaling information.
[0012] According to a fifth aspect of the embodiments of this disclosure, a network device is provided, comprising:
[0013] The transceiver module is used to receive a preset message sent by a terminal. The preset message is used to carry service information of a preset service or signaling information of the preset service; wherein, the preset message indicates that the preset message carries the service information or the signaling information.
[0014] According to a sixth aspect of the present disclosure, a communication device is provided, comprising:
[0015] One or more processors;
[0016] The processor is configured to invoke instructions to cause the communication device to execute any of the communication methods described in the first aspect to the second aspect.
[0017] According to a seventh aspect of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the communication method described in the first aspect, and the network device is configured to implement the communication method described in the second aspect.
[0018] According to an eighth aspect of the present disclosure, a storage medium is provided that stores instructions that, when executed on a communication device, cause the communication device to perform a communication method as described in any of the first to second aspects.
[0019] In a ninth aspect, embodiments of this disclosure provide a program product, including a computer program that, when executed by a communication device, implements the communication method as described in any of the first to second aspects.
[0020] In a tenth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the communication method as described in any of the first to second aspects.
[0021] It is understood that the aforementioned network devices, terminals, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here. Attached Figure Description
[0022] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0023] Figure 1 is a schematic diagram of the architecture of some communication systems provided in the embodiments of this disclosure;
[0024] Figure 2 is an interactive schematic diagram of a communication method provided in an embodiment of this disclosure;
[0025] Figure 3 is a schematic diagram of the structure of a terminal provided in an embodiment of this disclosure;
[0026] Figure 4 is a schematic diagram of the structure of a network device provided in an embodiment of this disclosure;
[0027] Figure 5A is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure;
[0028] Figure 5B is a schematic diagram of the structure of a chip provided in an embodiment of this disclosure. Detailed Implementation
[0029] This disclosure provides embodiments of communication methods, communication devices, communication systems, and storage media. In some embodiments, terms such as communication method and information processing method may be used interchangeably.
[0030] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.
[0031] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.
[0032] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.
[0033] In the embodiments disclosed herein, "multiple" refers to two or more.
[0034] In some embodiments, the terms "at least one of A or B, at least one of A and B", "one or more", "a plurality of", "multiple" and the like can be used interchangeably.
[0035] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.
[0036] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.
[0037] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.
[0038] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
[0039] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.
[0040] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.
[0041] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.
[0042] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.
[0043] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).
[0044] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.
[0045] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.
[0046] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.
[0047] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.
[0048] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.
[0049] In some embodiments, data, information, etc., may be obtained with the user's consent.
[0050] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.
[0051] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the communication system 100 may include a terminal and a network device, and the network device may include at least one of an access network device and a core network device.
[0052] In some embodiments, the terminal includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.
[0053] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation evolved Node B (ng-eNB), next-generation Node B (gNB), Node B (NB), Home Node B (HNB), Home evolved Node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.
[0054] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.
[0055] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some protocol layer functions are centrally controlled by the CU, while the remaining part or all protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.
[0056] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).
[0057] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.
[0058] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1 are illustrative. The communication system may include all or some of the main bodies in FIG1, or may include other main bodies outside of FIG1. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.
[0059] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).
[0060] Optionally, signaling information and service information transmission have different QoS requirements. For example, in terms of latency: signaling requires lower latency (within 100ms), while voice services can have slightly higher latency (within 150ms); in terms of reliability: both signaling and voice services require high reliability, but signaling is more sensitive to packet loss; in terms of bandwidth: signaling has lower bandwidth requirements, while voice services have higher bandwidth requirements; in terms of jitter: voice services have strict jitter requirements, while signaling does not. Future IoT NTN plans to support IMS voice services; however, currently for NB-IoT UEs, the CP scheme only supports one type of SRB for transmitting the DCCH logical channel, namely SRB1bis. Using a single radio bearer cannot distinguish between IMS signaling and service data with different QoS requirements, thus affecting the service quality of IMS voice.
[0061] Figure 2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2, this embodiment of the disclosure relates to a communication method for a communication system 100; the method includes:
[0062] Step 2101: The terminal sends a preset message to the network device.
[0063] Optionally, the default services may include Internet Protocol Multimedia Subsystem (IMS) voice services.
[0064] Optionally, the preset message is used to carry service information or signaling information of a preset service; wherein, the preset message indicates that the preset message carries service information or signaling information. Optionally, the signaling information may include information responsible for the establishment, modification, and release of sessions, for example, it may include SIP (Session Initiation Protocol) messages such as INVITE, ACK, BYE, etc. Service information may also be referred to as data information, and may include or carry actual voice data streams (RTP / RTCP) to provide real-time voice communication.
[0065] Alternatively, the terminal can send preset messages to the network device through the control plane (CP).
[0066] Optionally, the terminal can be an NB-IoT UE. In some embodiments, NB-IoT data transmission uses two schemes: the CP (Control Plane) scheme and the UP (User Plane) scheme. The main difference lies in the data transmission path and the protocol stack used. The CP scheme transmits data through the control plane. The data is encapsulated in NAS (Non-Access Stratum) signaling messages. It does not require establishing a dedicated user plane bearer (DRB) or activating the AS layer security mechanism. It uses SRB1bis to transmit NAS signaling and does not pass through the PDCP layer. Data transmission path: Device → eNodeB (base station) → MME → S-GW (Serving Gateway) → P-GW (PDN Gateway) → Application Server. The UP scheme transmits data through the user plane. It requires establishing a dedicated user plane bearer (DRB), and the data is transmitted through the user plane protocol stack. It requires activating the AS layer security mechanism. Data transmission path: Device → eNodeB (base station) → S-GW → P-GW → Application Server. Optionally, NB-IoT does not support SRB2.
[0067] Optionally, the preset message can be a first non-access stratum (NAS) message. The first NAS message is used to carry service information or signaling information. The first NAS message also carries indication information, which indicates that the first NAS message carries service information or signaling information.
[0068] Optionally, the same first NAS message may not simultaneously carry service information and signaling information.
[0069] Optionally, the preset message is either a second NAS message or a third NAS message. The second NAS message is different from the third NAS message. The second NAS message is used to carry signaling information, and the third NAS message is used to carry service information. When the preset message is a second NAS message, it indicates that the preset message carries signaling information; when the preset message is a third NAS message, it indicates that the preset message carries service information.
[0070] Optionally, the second NAS message differs from the third NAS message and includes one or more of the following:
[0071] The message names for the second NAS message and the third NAS message are different;
[0072] The second NAS message and the third NAS message have different NAS message types.
[0073] Optionally, the preset message is a first radio signaling bearer (SRB) or a second SRB. The first SRB and the second SRB are different. The first SRB is used to carry signaling information, and the second SRB is used to carry service information. When the preset message is the first SRB, it indicates that the preset message carries signaling information. When the preset message is the second SRB, it indicates that the preset message carries service information.
[0074] Optionally, the first SRB differs from the second SRB by one or more of the following:
[0075] The first SRB and the second SRB have different names;
[0076] The first SRB and the second SRB have different priorities;
[0077] The Radio Link Control (RLC) modes of the first SRB and the second SRB are different.
[0078] Optionally, the first SRB has a higher priority than the second SRB; optionally, the RLC mode of the first SRB is RLC acknowledged mode AM, and the RLC mode of the second SRB is RLC unacknowledged mode UM.
[0079] Optionally, the first SRB includes any one of the following: SRB1; SRB2; SRB3; SRB1bis; SRB2bis; SRB3bis;
[0080] Optionally, the second SRB includes any one of the following: SRB1; SRB2; SRB3; SRB1bis; SRB2bis; SRB3bis.
[0081] For example, in some embodiments, if the terminal supports both the UP scheme and AS security is activated, the first SRB can be, for example, SRB1, and the second SRB can be, for example, SRB2. In some embodiments, if the terminal only supports the CP scheme, the first SRB can be, for example, SRB1bis, and the second SRB can be, for example, SRB2bis. In some embodiments, if the terminal supports both the UP scheme and AS security is activated, the first SRB can be, for example, SRB2, and the second SRB can be, for example, SRB3. In some embodiments, if the terminal only supports the CP scheme, the first SRB can be, for example, SRB2bis, and the second SRB can be, for example, SRB3bis.
[0082] Optionally, SRB1 mentioned above is the SRB supported by the current NB-IoT protocol, and SRB2 / SRB3 / SRB2bis / SRB3bis mentioned above are just examples. The actual SRB number can be other values, namely SRBx / SRBy / SRBxbis / SRBybis.
[0083] For example, in some embodiments, the SRB used for transmitting IMS voice signaling is configured in RLC AM mode, and the SRB used for transmitting IMS voice services is configured in RLC UM mode. For example, in some embodiments, when the first SRB can be, for example, SRB1bis and the second SRB can be, for example, SRB2bis, SRB1bis is used for transmitting IMS voice signaling and is configured in RLC AM mode, and SRB2bis is used for transmitting IMS voice services and is configured in RLC UM mode.
[0084] Optionally, in some embodiments, when a terminal sends a preset message, it can map the first NAS message (or IMS voice signaling NAS message) used to carry signaling information to the first SRB of the access layer AS layer, and map the first NAS message (or IMS voice service NAS message) used to carry service information to the second SRB of the AS layer; alternatively, in other embodiments, the second NAS message (or IMS voice signaling NAS message) is mapped to the first SRB of the AS layer, and the third NAS message (or IMS voice service NAS message) is mapped to the second SRB of the AS layer.
[0085] For example, assuming the first SRB can be SRB2bis and the second SRB can be SRB3bis, then IMS voice signaling NAS messages are mapped to SRB2bis for transmission, and IMS voice service NAS messages are mapped to SRB3bis for transmission.
[0086] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.
[0087] In summary, in the embodiments of this disclosure, the terminal can distinguish and send service information and signaling information of preset services, thereby ensuring that the distinguished service information and signaling information can each meet their respective transmission requirements (such as QoS requirements), meet the different service quality requirements of preset services, and ensure communication quality.
[0088] The following is an exemplary description of the above method:
[0089] This disclosure provides a method for a CP solution to support QoS requirements for voice transmission.
[0090] The full Chinese and English names of abbreviations
[0091] IMS IP Multimedia Subsystem
[0092] NAS Non-Access Stratum
[0093] AS Access Stratum, Access Layer
[0094] Optionally, IMS voice
[0095] Currently, IMS voice transmission involves both signaling and service transmission. The signaling portion is responsible for establishing, modifying, and releasing sessions, including SIP (Session Initiation Protocol) messages such as INVITE, ACK, and BYE. The service portion carries the actual voice data stream (RTP / RTCP), providing real-time voice communication.
[0096] Optionally, NB-IoT data transmission scheme
[0097] NB-IoT employs two data transmission schemes: the CP (Control Plane) scheme and the UP (User Plane) scheme. The main differences lie in the data transmission path and the protocol stack used. The CP scheme transmits data through the control plane, encapsulating the data in NAS (Non-Access Stratum) signaling messages. It does not require a dedicated User Plane Bearer (DRB) or AS layer security mechanisms. It uses SRB1bis to transmit NAS signaling, bypassing the PDCP layer. The data transmission path is: Device → eNodeB (Base Station) → MME → S-GW (Serving Gateway) → P-GW (PDN Gateway) → Application Server. The UP scheme transmits data through the user plane, requiring a dedicated User Plane Bearer (DRB). Data is transmitted via the user plane protocol stack and requires AS layer security mechanisms. The data transmission path is: Device → eNodeB (Base Station) → S-GW → P-GW → Application Server. NB-IoT does not support SRB2.
[0098] Optionally, signaling and service transmission in IMS voice have different QoS requirements. For example, in terms of latency: signaling requires lower latency (within 100ms), while voice services can have slightly higher latency (within 150ms); in terms of reliability: both signaling and voice services require high reliability, but signaling is more sensitive to packet loss; in terms of bandwidth: signaling has lower bandwidth requirements, while voice services have higher bandwidth requirements; in terms of jitter: voice services have strict jitter requirements, while signaling does not. Future IoT NTN plans to support IMS voice services; however, currently for NB-IoT UEs, the CP scheme only supports one type of SRB for transmitting the DCCH logical channel, namely SRB1bis. Using a single radio bearer cannot distinguish between IMS signaling and service data with different QoS requirements, thus affecting the service quality of IMS voice.
[0099] Optionally, this disclosure proposes a method for transmitting IMS voice for NB-IoT UEs using the CP data transmission scheme. This method involves introducing multiple radio signaling bearers to transmit IMS voice signaling and service data, thereby meeting the different quality of service requirements of IMS voice.
[0100] Optional Example 1: IMS voice signaling and services are transmitted separately in the NAS layer signaling.
[0101] Example:
[0102] When transmitting IMS voice signaling and services, the NAS layer distinguishes between them within the NAS signaling. The distinction can be made in several ways:
[0103] Option 1: IMS voice signaling and services use the same NAS message, with the NAS message explicitly indicating whether it carries IMS voice signaling or IMS voice services.
[0104] When using method 1, IMS voice signaling and services are not multiplexed within the same NAS message; that is, IMS voice signaling and IMS voice services are not transmitted simultaneously within the same NAS message.
[0105] Option 2: IMS voice signaling and services use different NAS message transmissions (i.e., distinguished by NAS message type / name), such as IMS voice signaling NAS messages and IMS voice service NAS messages.
[0106] Optional Example 2: The AS layer introduces multiple SRBs to carry IMS voice signaling and service data.
[0107] Example:
[0108] For the NB-IoT CP solution, multiple SRBs for transmitting IMS voice are introduced at the AS layer, such as one or more SRBs for transmitting IMS voice signaling, and one or more SRBs for transmitting IMS voice services:
[0109] Option 1: SRB1 and SRB2 (e.g., NB-IoT UE simultaneously supports the UP scheme and AS security is activated)
[0110] Option 2: SRB1bis and SRB2bis (e.g., NB-IoT UE only supports the CP option)
[0111] Option 3: SRB2 and SRB3 (e.g., NB-IoT UE simultaneously supports the UP scheme and AS security is activated)
[0112] Option 4: SRB2bis and SRB3bis (e.g., NB-IoT UE only supports the CP option)
[0113] Note: SRB1 is the SRB supported by the current NB-IoT protocol. The above SRB2 / SRB3 / SRB2bis / SRB3bis are just examples. The actual SRB number can be other values, such as SRBx / SRBy / SRBxbis / SRBybis.
[0114] The SRB used for transmitting IMS voice signaling is configured in RLC AM mode, and the SRB used for transmitting IMS voice services is configured in RLC UM mode. Taking Scheme 2 as an example, SRB1bis is used for transmitting IMS voice signaling and is configured in RLC AM mode, while SRB2bis is used for transmitting IMS voice services and is configured in RLC UM mode.
[0115] Optional Example 3: Introducing the mapping between NAS layer IMS voice signaling and service data messages and multiple AS layer IMS voice SRBs.
[0116] NAS messages transmitting IMS voice signaling at the NAS layer are mapped to the SRB used for transmitting IMS voice signaling at the AS layer, and NAS messages transmitting IMS voice services at the NAS layer are mapped to the SRB used for transmitting IMS voice services at the AS layer. Taking the combination of the above NAS layer differentiation method 2 and AS layer IMS voice SRB scheme 4 as an example, IMS voice signaling NAS messages are mapped to SRB2bis for transmission, and IMS voice service NAS messages are mapped to SRB3bis for transmission.
[0117] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.
[0118] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.
[0119] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).
[0120] Figure 3 is a schematic diagram of the terminal structure proposed in an embodiment of this disclosure. The terminal is used to execute any of the above methods. In some embodiments, as shown in Figure 3, the terminal may include at least one of a processing module, a transceiver module, etc. In some embodiments, the transceiver module sends a preset message to a network device, the preset message being used to carry service information of a preset service or signaling information of the preset service; wherein, the preset message indicates that the preset message carries the service information or the signaling information.
[0121] Optionally, the transceiver module is used to perform at least one of the communication steps, such as sending and / or receiving, performed by the first network element in any of the above methods, which will not be elaborated here. Optionally, the processing module is used to perform at least one of the other steps performed by the first network element in any of the above methods, which will not be elaborated here.
[0122] Optionally, sending a preset message to the network device includes:
[0123] The preset message is sent to the network device through the control plane (CP).
[0124] Optionally, the preset message is a first non-access stratum (NAS) message, which is used to carry the service information or the signaling information. The first NAS message also carries indication information, which indicates that the first NAS message carries the service information or the signaling information.
[0125] Optionally, the same first NAS message may not simultaneously carry the service information and the signaling information.
[0126] Optionally, the preset message is a second NAS message or a third NAS message. The second NAS message is different from the third NAS message. The second NAS message is used to carry the signaling information, and the third NAS message is used to carry the service information.
[0127] Specifically, when the preset message is the second NAS message, it indicates that the preset message carries the signaling information; when the preset message is the third NAS message, it indicates that the preset message carries the service information.
[0128] Optionally, the second NAS message differs from the third NAS message and includes one or more of the following:
[0129] The second NAS message has a different message name than the third NAS message;
[0130] The second NAS message is of a different NAS message type than the third NAS message.
[0131] Optionally, the preset message is a first radio signaling bearer (SRB) or a second SRB. The first SRB is different from the second SRB. The first SRB is used to carry the signaling information, and the second SRB is used to carry the service information.
[0132] Wherein, when the preset message is the first SRB, it indicates that the preset message carries the signaling information; when the preset message is the second SRB, it indicates that the preset message carries the service information.
[0133] Optionally, the first SRB differs from the second SRB, including one or more of the following:
[0134] The first SRB has a different name than the second SRB;
[0135] The first SRB and the second SRB have different priorities;
[0136] The first SRB and the second SRB have different Radio Link Control (RLC) modes.
[0137] Optionally, the first SRB has a higher priority than the second SRB;
[0138] The RLC mode of the first SRB is RLC acknowledged mode AM, and the RLC mode of the second SRB is RLC unacknowledged mode UM.
[0139] Optionally, the first SRB includes any one of the following:
[0140] SRB1;
[0141] SRB2;
[0142] SRB3;
[0143] SRB1bis;
[0144] SRB2bis;
[0145] SRB3bis;
[0146] Wherein, the second SRB includes any one of the following:
[0147] SRB1;
[0148] SRB2;
[0149] SRB3;
[0150] SRB1bis;
[0151] SRB2bis;
[0152] SRB3bis.
[0153] Optionally, the method further includes:
[0154] Map the first NAS message used to carry signaling information to the first SRB of the access layer AS layer, and map the first NAS message used to carry service information to the second SRB of the AS layer; or
[0155] The second NAS message is mapped to the first SRB of the AS layer, and the third NAS message is mapped to the second SRB of the AS layer.
[0156] Optionally, the preset service includes Internet Protocol Multimedia Subsystem (IMS) voice service.
[0157] Figure 4 is a schematic diagram of the structure of a network device proposed in an embodiment of this disclosure. The network device is used to perform any of the above methods. In some embodiments, as shown in Figure 4, the network device may include at least one of a processing module, a transceiver module, etc. In some embodiments, the transceiver module is used to receive a preset message sent by a terminal, the preset message being used to carry service information of a preset service or signaling information of the preset service; wherein, the preset message indicates that the preset message carries the service information or the signaling information.
[0158] Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be elaborated here. Optionally, the processing module is used to perform at least one of the other steps performed by the network device in any of the above methods, which will not be elaborated here.
[0159] Optionally, the preset message sent by the receiving terminal includes:
[0160] Receive the preset message sent by the terminal through the control plane CP.
[0161] Optionally, the preset message is a first non-access stratum (NAS) message, which is used to carry the service information or the signaling information. The first NAS message also carries indication information, which indicates that the first NAS message carries the service information or the signaling information.
[0162] Optionally, the same first NAS message may not simultaneously carry the service information and the signaling information.
[0163] Optionally, the preset message is a second NAS message or a third NAS message. The second NAS message is different from the third NAS message. The second NAS message is used to carry the signaling information, and the third NAS message is used to carry the service information.
[0164] Specifically, when the preset message is the second NAS message, it indicates that the preset message carries the signaling information; when the preset message is the third NAS message, it indicates that the preset message carries the service information.
[0165] Optionally, the second NAS message differs from the third NAS message and includes one or more of the following:
[0166] The second NAS message has a different message name than the third NAS message;
[0167] The second NAS message is of a different NAS message type than the third NAS message.
[0168] Optionally, the preset message is a first radio signaling bearer (SRB) or a second SRB. The first SRB is different from the second SRB. The first SRB is used to carry the signaling information, and the second SRB is used to carry the service information.
[0169] Wherein, when the preset message is the first SRB, it indicates that the preset message carries the signaling information; when the preset message is the second SRB, it indicates that the preset message carries the service information.
[0170] Optionally, the first SRB differs from the second SRB, including one or more of the following:
[0171] The first SRB has a different name than the second SRB;
[0172] The first SRB and the second SRB have different priorities;
[0173] The first SRB and the second SRB have different Radio Link Control (RLC) modes.
[0174] Optionally, the first SRB has a higher priority than the second SRB;
[0175] The RLC mode of the first SRB is RLC acknowledged mode AM, and the RLC mode of the second SRB is RLC unacknowledged mode UM.
[0176] Optionally, the first SRB includes any one of the following:
[0177] SRB1;
[0178] SRB2;
[0179] SRB3;
[0180] SRB1bis;
[0181] SRB2bis;
[0182] SRB3bis;
[0183] Wherein, the second SRB includes any one of the following:
[0184] SRB1;
[0185] SRB2;
[0186] SRB3;
[0187] SRB1bis;
[0188] SRB2bis;
[0189] SRB3bis.
[0190] Optionally, the preset service includes Internet Protocol Multimedia Subsystem (IMS) voice service.
[0191] Figure 5A is a schematic diagram of the structure of the communication device 6100 proposed in an embodiment of this disclosure. The communication device 6100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.
[0192] As shown in Figure 5A, the communication device 6100 is used to execute any of the above methods. In some embodiments, the communication device 6100 includes one or more processors 6101. The processor 6101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to execute any of the above methods. Optionally, one or more processors 6101 are used to invoke instructions to cause the communication device 6100 to execute any of the above methods.
[0193] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps such as sending and / or receiving in the above-described method, and the processor 6101 performs at least one of the other steps. In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.
[0194] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data and / or instructions. Optionally, one or more processors 6101 are used to invoke instructions stored in the memory 6103 to cause the communication device 6100 to perform any of the above methods. Optionally, all or part of the memory 6103 may also be located outside the communication device 6100. In an optional embodiment, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6102 and can be used to receive data and / or instructions from the memory 6102 or other devices, and can be used to send data and / or instructions to the memory 6102 or other devices. For example, the interface circuit 6104 can read data and / or instructions stored in the memory 6102 and send the data and / or instructions to the processor 6101.
[0195] The communication device 6100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 6100 described in this disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG5A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.
[0196] Figure 5B is a schematic diagram of the structure of the chip 6200 proposed in an embodiment of this disclosure. For cases where the communication device 6100 can be a chip or a chip system, the schematic diagram of the chip 6200 shown in Figure 5B can be referenced, but the invention is not limited thereto.
[0197] Chip 6200 includes one or more processors 6201. Chip 6200 is used to perform any of the methods described above.
[0198] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data and / or instructions. Optionally, all or part of the memories 6203 may be located outside of chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data and / or instructions from memory 6203 or other devices, and interface circuit 6202 can be used to send data and / or instructions to memory 6203 or other devices. For example, interface circuit 6202 can read data and / or instructions stored in memory 6203 and send the data and / or instructions to processor 6201.
[0199] In some embodiments, the interface circuit 6202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps 2101, 2103, 2105, 3102, and 4102, but not limited thereto). The interface circuit 6202 performing the communication steps such as sending and / or receiving in the above-described method refers, for example, to the interface circuit 6202 performing data and / or instruction interaction between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of other steps (e.g., steps 2102, 2104, 2106, 3101, and 4101, but not limited thereto).
[0200] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.
[0201] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.
[0202] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.
[0203] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.
[0204] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).
[0205] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.
[0206] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0207] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A communication method characterized by comprising: The method, executed by a terminal, includes: A preset message is sent to a network device. The preset message is used to carry service information of a preset service or signaling information of the preset service. The preset message indicates that the preset message carries the service information or the signaling information.
2. The method of claim 1, wherein, Sending a preset message to the network device includes: The preset message is sent to the network device through the control plane (CP).
3. The method of claim 1 or 2, wherein, The preset message is a first non-access stratum (NAS) message. The first NAS message is used to carry the service information or the signaling information. The first NAS message also carries indication information, which indicates that the first NAS message carries the service information or the signaling information.
4. The method as described in claim 3, characterized in that, The same first NAS message may not simultaneously carry the service information and the signaling information.
5. The method as described in claim 1 or 2, characterized in that, The preset message is either a second NAS message or a third NAS message. The second NAS message is different from the third NAS message. The second NAS message is used to carry the signaling information, and the third NAS message is used to carry the service information. Specifically, when the preset message is the second NAS message, it indicates that the preset message carries the signaling information; when the preset message is the third NAS message, it indicates that the preset message carries the service information.
6. The method as described in claim 5, characterized in that, The second NAS message differs from the third NAS message in that it includes one or more of the following: The second NAS message has a different message name than the third NAS message; The second NAS message is of a different NAS message type than the third NAS message.
7. The method according to any one of claims 1-6, characterized in that, The preset message is either a first radio signaling bearer (SRB) or a second SRB. The first SRB is different from the second SRB. The first SRB is used to carry the signaling information, and the second SRB is used to carry the service information. Wherein, when the preset message is the first SRB, it indicates that the preset message carries the signaling information; when the preset message is the second SRB, it indicates that the preset message carries the service information.
8. The method as described in claim 7, characterized in that, The first SRB differs from the second SRB in that it includes one or more of the following: The first SRB has a different name than the second SRB; The first SRB and the second SRB have different priorities; The first SRB and the second SRB have different Radio Link Control (RLC) modes.
9. The method as described in claim 7 or 8, characterized in that, The first SRB has a higher priority than the second SRB. The RLC mode of the first SRB is RLC acknowledged mode AM, and the RLC mode of the second SRB is RLC unacknowledged mode UM.
10. The method according to any one of claims 7-9, characterized in that, in, The first SRB includes any one of the following: SRB1; SRB2; SRB3; SRB1bis; SRB2bis; SRB3bis; Wherein, the second SRB includes any one of the following: SRB1; SRB2; SRB3; SRB1bis; SRB2bis; SRB3bis.
11. The method according to any one of claims 1-10, characterized in that, The method further includes: Map the first NAS message used to carry signaling information to the first SRB of the access layer AS layer, and map the first NAS message used to carry service information to the second SRB of the AS layer; or The second NAS message is mapped to the first SRB of the AS layer, and the third NAS message is mapped to the second SRB of the AS layer.
12. The method according to any one of claims 1-11, characterized in that, The preset services include Internet Protocol Multimedia Subsystem (IMS) voice services.
13. A communication method, characterized in that, Performed by a network device, the method includes: A preset message sent by a receiving terminal is used to carry service information of a preset service or signaling information of the preset service; wherein, the preset message indicates that the preset message carries the service information or the signaling information.
14. The method as described in claim 13, characterized in that, The preset message sent by the receiving terminal includes: Receive the preset message sent by the terminal through the control plane CP.
15. The method as described in claim 13 or 14, characterized in that, The preset message is a first non-access stratum (NAS) message. The first NAS message is used to carry the service information or the signaling information. The first NAS message also carries indication information, which indicates that the first NAS message carries the service information or the signaling information.
16. The method of claim 15, wherein, The same first NAS message may not simultaneously carry the service information and the signaling information.
17. The method of claim 13 or 14, wherein, The preset message is either a second NAS message or a third NAS message. The second NAS message is different from the third NAS message. The second NAS message is used to carry the signaling information, and the third NAS message is used to carry the service information. Specifically, when the preset message is the second NAS message, it indicates that the preset message carries the signaling information; when the preset message is the third NAS message, it indicates that the preset message carries the service information.
18. The method as described in claim 17, characterized in that, The second NAS message differs from the third NAS message in that it includes one or more of the following: The second NAS message has a different message name than the third NAS message; The second NAS message is of a different NAS message type than the third NAS message.
19. The method according to any one of claims 13-18, characterized in that, The preset message is either a first radio signaling bearer (SRB) or a second SRB. The first SRB is different from the second SRB. The first SRB is used to carry the signaling information, and the second SRB is used to carry the service information. Wherein, when the preset message is the first SRB, it indicates that the preset message carries the signaling information; when the preset message is the second SRB, it indicates that the preset message carries the service information.
20. The method of claim 19, wherein, The first SRB differs from the second SRB in that it includes one or more of the following: The first SRB has a different name than the second SRB; The first SRB and the second SRB have different priorities; The first SRB and the second SRB have different Radio Link Control (RLC) modes.
21. The method as described in claim 19 or 20, characterized in that, The first SRB has a higher priority than the second SRB. The RLC mode of the first SRB is RLC acknowledged mode AM, and the RLC mode of the second SRB is RLC unacknowledged mode UM.
22. The method according to any one of claims 19-21, characterized in that, in, The first SRB includes any one of the following: SRB1; SRB2; SRB3; SRB1bis; SRB2bis; SRB3bis; Wherein, the second SRB includes any one of the following: SRB1; SRB2; SRB3; SRB1bis; SRB2bis; SRB3bis.
23. The method according to any one of claims 13-22, characterized in that, The preset services include Internet Protocol Multimedia Subsystem (IMS) voice services.
24. A communication method for a communication system, the communication system comprising a terminal and a network device, the method comprising: The terminal sends a preset message to the network device. The preset message is used to carry service information of a preset service or signaling information of the preset service. The preset message indicates that it carries the service information or the signaling information.
25. A communication device, characterized in that, The communication device is used to perform the method according to any one of claims 1 to 12, 13 to 23.
26. A communication system, characterized in that, The device includes a terminal and a network device, wherein the terminal is configured to implement the method of any one of claims 1 to 12, and the network device is configured to implement the method of any one of claims 13 to 23.
27. A storage medium storing instructions, characterized in that, When the instructions are executed on the communication device, the communication device performs the method as described in any one of claims 1 to 12, 13 to 23.
28. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by a communication device, it implements the method of any one of claims 1 to 12, 13 to 23.