Communication method and communication device

Abstract

The invention provides a communication method and a communication device, which can be applied to a satellite communication system, such as an NTN (Network Temporary Network). The communication method comprises: a core network device sending first information to a first node, the first information being used for configuring a first function set of the first node, the first function set comprising one or more of the following functions: a network side unit function, an MT1 function, and an MT2 function, the MT1 function comprising a function of an MT in an IAB node, and the MT2 function comprising a function of an MT in a WAB node; and the first node enables functions in the first function set. According to the technical scheme, when the terminal is accessed to the core network based on the integrated access backhaul network architecture in a satellite communication scene, the communication efficiency is ensured, and the deployment cost is reduced.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly to a communication method and a communication device. Background Technology

[0002] Non-terrestrial networks (NTNs), such as satellite communications, possess significant advantages including global coverage, long-distance transmission, flexible networking, convenient deployment, and independence from geographical limitations. They have been widely applied in various fields, including maritime communications, positioning and navigation, disaster relief, scientific experiments, video broadcasting, and Earth observation. The integration of terrestrial and satellite networks, leveraging their respective strengths, forms a seamless global communication network encompassing land, sea, air, space, and ground, meeting the diverse and ubiquitous service needs of users.

[0003] In terrestrial communications, terminal access to the core network is typically achieved through an integrated access and backhaul network architecture. This architecture includes an access component and a backhaul component. The backhaul component can reuse the access mechanism (such as the Uu interface protocol design), thereby reducing network deployment costs. For example, the integrated access and backhaul (IAB) architecture and the wireless access and backhaul (WAB) architecture are two commonly used integrated access and backhaul network architectures in terrestrial communications.

[0004] However, for NTN communication scenarios, such as satellite communication scenarios, there is also a need to achieve integrated access and backhaul networks, so how to achieve this has become an urgent technical problem to be solved. Summary of the Invention

[0005] This application provides a communication method and a communication device that can flexibly configure nodes in a network to improve communication efficiency and reduce deployment costs.

[0006] In a first aspect, this application provides a communication method that can be applied to the first node side. For example, it can be executed by the first node in the network, or it can be executed by a component configured in the first node (such as a communication module, chip, chip system, etc.), or it can be a logic module or software that can realize all or part of the functions of the first node. This application does not limit this.

[0007] The communication method includes: receiving first information from a core network device, the first information being used to configure a first set of functions for a first node, the first set of functions including one or more of the following functions: network side unit functions, MT1 functions, MT2 functions, the MT1 function including the functions of a mobile terminal (MT) in an IAB node, the MT2 function including the functions of an MT in a WAB node; and activating the functions in the first set of functions.

[0008] In this application, the first node refers to a non-terrestrial network device or a terrestrial network device included in the network. In this application, the non-terrestrial network device is also referred to as an NTN node or NTN device, etc., and the terrestrial network device is also referred to as a TN node or TN device, etc.

[0009] For example, the functions of the network-side units mentioned above can be any of the following: distributed unit (DU) function, centralized unit (CU) function, CU function, and DU function.

[0010] The CU and DU functions can also be replaced by the gNB function. That is, the gNB function includes both the CU and DU functions.

[0011] In this technical solution, the core network device can send a message to the first node to configure a first function set. The first function set includes one or more of the following functions: network-side unit function, MT1 function, and MT2 function. Correspondingly, after receiving the first message, the first node enables the functions in the first function set.

[0012] The first information is used to configure the first set of functions of the first node, or it can be replaced with: the first information is used to indicate the first set of functions that the first node enables.

[0013] The word "enable" can also be replaced with descriptions such as "configure", "enable", or "activate".

[0014] For example, the first functional set includes DU and MT1 functions; correspondingly, the first node is configured with DU and MT1 functions. Understandably, in this case, the first node can be considered configured as an IAB node. The IAB node described in this application is merely an example name, used simply to represent a node possessing both DU and MT1 functions. Understandably, as the network architecture changes or evolves, the IAB node may also be referred to by other names, which does not constitute a limitation of this application.

[0015] For example, the first function set includes DU and CU functions; correspondingly, the first node is configured with DU and CU functions. Understandably, in this case, the first node can be considered configured as an IAB host. The IAB host described in this application is merely an example name, used simply to represent having both DU and CU functions. Understandably, as the network architecture changes or evolves, the IAB host may also be called by other names, which does not constitute a limitation of this application.

[0016] For example, the first functional set includes DU, CU, and MT2 functions; correspondingly, the first node is configured with DU, CU, and MT2 functions. Understandably, in this case, the first node can be considered configured as a WAB node. The WAB node described in this application is merely an example name; the name WAB node is used simply to represent a node possessing DU, CU, and MT2 functions. Understandably, as the network architecture changes or evolves, the WAB node may also be referred to by other names, which does not constitute a limitation of this application.

[0017] For example, the first function set includes dual DU function, CU function, MT1 function, and MT2 function; correspondingly, the first node is configured with dual DU function, CU function, MT1 function, and MT2 function.

[0018] For example, the first function set includes DU function, dual CU function, and MT2 function; correspondingly, the first node is configured with DU function, dual CU function, and MT2 function.

[0019] Based on the method provided in the first aspect, the core network device can configure different sets of functions for each node (network device) in the network, enabling the first node to have different functions enabled in different non-terrestrial communication scenarios. For example, the core network device can configure the first node as one or more of IAB node, IAB host, and WAB node. In other words, according to the technical solution provided in this application, the core network device can flexibly configure nodes in the network. For example, it can configure different sets of functions for the first node according to the specific needs of the communication scenario, enabling the first node to have access and / or backhaul functions to realize non-terrestrial communication, such as satellite communication, and access and backhaul networks in the scenario, thereby improving communication efficiency and reducing deployment costs.

[0020] In conjunction with the first aspect, in one possible implementation, the first information is carried in a first message, and the first message also includes second information, which is used to indicate the valid time period associated with the first function set; the activation of the functions in the first function set includes: activating the functions in the first function set during the valid time period.

[0021] This technical solution allows for dynamic adjustment of the set of functions enabled, meaning different sets of functions can be configured at different times. It is suitable for situations where the first node moves rapidly, such as satellites, ensuring the success rate and reliability of communication.

[0022] In conjunction with the first aspect, in one possible implementation, before receiving the first information, the method further includes: sending capability information to the core network device, the capability information indicating the set of functions requested by the first node, the requested set of functions being one or more of the following:

[0023] The DU function and MT1 function constitute a set of functions;

[0024] The functional set consisting of DU and CU functions;

[0025] The DU function, CU function, and MT2 function constitute a functional set;

[0026] A set of functions consisting of dual DU function, CU function, MT1 function, and MT2 function;

[0027] The function set consists of DU function, dual CU function and MT2 function;

[0028] The CU function, along with the DU function, core network function, and MT1 function, constitute a functional set.

[0029] The capability information indicates the set of functions requested by the first node, or it can be replaced with: the capability information indicates the set of functions supported by the first node.

[0030] In this implementation, the first node indicates the set of functions requested by reporting capability information to the core network device, thereby assisting the core network device in determining the first set of functions to be configured for the first node.

[0031] In conjunction with the first aspect, in one possible implementation, third information is received from the core network device, the third information being used to indicate the triggering conditions for the first node to enable functions in the first function set; enabling functions in the first function set includes: enabling functions in the first function set when the triggering conditions are met.

[0032] For example, the triggering conditions include one or more of the following: the elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

[0033] This technical solution enables the timely and flexible activation of a set of configuration functions based on triggered events, reducing the latency of function configuration.

[0034] In conjunction with the first aspect, in one possible implementation, the method further includes: receiving fourth information from a core network device, the fourth information being used to instruct the first function set to be updated to a second function set.

[0035] For example, when the communication scenario of the network in which the first node is located changes, the core network device sends a fourth message to the first node to instruct the first node to update the first function set.

[0036] For example, the fourth information sent by the core network device to the first node includes at least one function and the configuration status corresponding to at least one function. The configuration status is, for example, any of the following: newly added, released or deleted, partial release of functions, function temporarily suspended and activated according to instructions, function temporarily suspended and taken effect or deleted after conditions are met; wherein, at least one function includes functions in the first function set and functions added to the second function set compared to the first function set.

[0037] This implementation method enables dynamic management of the functions configured on the first node to suit different communication scenarios, thereby ensuring communication efficiency.

[0038] In conjunction with the first aspect, in one possible implementation, the first node has network-side unit functionality and is the source service node of the second node. The method further includes: when the second node switches from the first node to a third node in the network, sending indication information of a first set of functions to the third node.

[0039] The third node is also the target service node of the second node.

[0040] With this implementation, when the second node switches from the first node to the third node in the network, the first node sends an indication message of the first function set to the third node. In this way, the third node can be configured with the first function set, so that the third node can serve the second node, thereby ensuring that the communication of the second node is not interrupted.

[0041] In conjunction with the first aspect, in one possible implementation, the first node has MT1 and / or MT2 functions, and the method further includes: when the first node switches from the fourth node to the fifth node in the network, receiving indication information of the third set of functions of the fifth node sent by the fifth node.

[0042] With this implementation, when the first node switches from the fourth node to the fifth node in the network, the fifth node sends the instruction information of the third function set of the fifth node to the first node. In this way, the first node can be configured as the third function set, so that the fifth node can serve the first node, thereby ensuring that the communication of the first node is uninterrupted.

[0043] Secondly, this application provides a communication method that can be applied to the core network side. For example, it can be executed by core network equipment in the network, or by components (such as communication modules, chips, chip systems, etc.) configured in the core network equipment, or by logic modules or software that can realize all or part of the functions of the core network equipment. This application does not limit this.

[0044] The communication method includes: sending first information to a first node in the network, the first information being used to configure a first set of functions of the first node, the first set of functions including one or more of the following functions: network side unit function, MT1 function, MT2 function, the MT1 function including the MT function in the IAB node, the MT2 function including the MT function in the WAB node; wherein the network includes non-terrestrial network devices and / or terrestrial network devices, and the first node is a non-terrestrial network device or a terrestrial network device.

[0045] Based on the method provided in the second aspect, core network devices can configure different sets of functions for each node (network device) in the network. In this way, core network devices can flexibly configure nodes in the network. For example, they can configure different sets of functions for the first node in different non-terrestrial communication scenarios according to the specific needs of the communication scenario. For example, core network devices can configure the first node as one or more of IAB node, IAB host, and WAB node, so that the first node has access and / or backhaul functions to realize non-terrestrial communication, such as satellite communication, access and backhaul network in the scenario, so as to improve communication efficiency and reduce deployment costs.

[0046] In conjunction with the second aspect, in one possible implementation, the network-side unit function is any one of the following: DU function, CU function, CU function, and DU function.

[0047] In conjunction with the second aspect, in one possible implementation, the first information is carried in a first message, which also includes second information used to indicate the valid time period associated with the first set of functions.

[0048] In conjunction with the second aspect, in one possible implementation, before sending the first information, the method further includes: receiving capability information from a first node, the capability information indicating a set of functions requested by the first node, the requested set of functions being one or more of the following:

[0049] The DU function and MT1 function constitute a set of functions;

[0050] The functional set consisting of DU and CU functions;

[0051] The functional set consisting of DU function, CU function, and MT2 function;

[0052] A set of functions consisting of dual DU function, CU function, MT1 function, and MT2 function;

[0053] The function set consists of DU function, dual CU function and MT2 function;

[0054] The core network function consists of the CU function, DU function, core network function, and MT1 function.

[0055] In conjunction with the second aspect, in one possible implementation, the method further includes: sending third information to the first node, the third information being used to indicate the triggering conditions for the first node to activate functions in the first set of functions.

[0056] In conjunction with the second aspect, in one possible implementation, the triggering conditions include one or more of the following: the elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the position of the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

[0057] In conjunction with the second aspect, in one possible implementation, the method further includes: sending a fourth message to the first node, the fourth message being used to instruct the first function set to be updated to the second function set.

[0058] For example, the fourth information includes at least one function and the configuration status corresponding to at least one function. The configuration status is any one of the following: newly added, released or deleted, some functions in the function are released, the function is temporarily suspended and activated according to the instruction, the function is temporarily suspended and takes effect or is deleted after the conditions are met; wherein at least one function includes functions in the first function set and functions in the second function set that are added compared to the first function set.

[0059] Thirdly, this application provides a communication device, comprising: a transceiver module for receiving first information, the first information being used to configure a first function set of a first node, the first function set including one or more of the following functions: network side unit function, MT1 function, MT2 function, the MT1 function including the MT function in the IAB node, and the MT2 function including the MT function in the WAB node; and a processing module for activating the functions in the first function set.

[0060] In conjunction with the third aspect, in one possible implementation, the network-side unit function is any one of the following: DU function, CU function, CU function, and DU function.

[0061] In conjunction with the third aspect, in one possible implementation, the first information is carried in the first message, and the first message also includes the second information, which is used to indicate the valid time period associated with the first function set; the processing module is specifically used to: activate the functions in the first function set during the valid time period.

[0062] In conjunction with the third aspect, in one possible implementation, the transceiver module is further configured to: send capability information to the core network device, the capability information indicating the set of functions requested by the first node, the requested set of functions being one or more of the following:

[0063] The DU function and MT1 function constitute a set of functions;

[0064] The functional set consisting of DU and CU functions;

[0065] The set of functions consisting of DU, CU, and MT2 functions;

[0066] A set of functions consisting of dual DU function, CU function, MT1 function, and MT2 function;

[0067] The function set consists of DU function, dual CU function and MT2 function;

[0068] The core network function consists of the CU function, DU function, core network function, and MT1 function.

[0069] In conjunction with the third aspect, in one possible implementation, the transceiver module is further configured to: receive third information from the core network device, the third information being used to indicate the triggering conditions for the first node to enable functions in the first function set; the processing module is specifically configured to: enable functions in the first function set when the triggering conditions are met.

[0070] In conjunction with the third aspect, in one possible implementation, the triggering conditions include one or more of the following: the elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the position of the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

[0071] In conjunction with the third aspect, in one possible implementation, the transceiver module is further configured to: receive fourth information from the core network device, the fourth information being used to instruct the first function set to be updated to the second function set.

[0072] In conjunction with the third aspect, in one possible implementation, the fourth information includes at least one function and the configuration state corresponding to each of the at least one function. The configuration state is any one of the following: newly added, released or deleted, partial release of functions, function temporarily suspended and activated according to instructions, function temporarily suspended and activated or deleted after meeting conditions; wherein at least one function includes functions in the first function set and functions newly added to the second function set compared to the first function set.

[0073] In conjunction with the third aspect, in one possible implementation, the first node has network-side unit functionality and is the source service node of the second node. The transceiver module is also used to: send instruction information of the first function set to the third node when the second node switches from the first node to the third node in the network.

[0074] In conjunction with the third aspect, in one possible implementation, the first node has MT1 and / or MT2 functions, and the transceiver module is further configured to: receive indication information of the third function set of the fifth node sent by the fifth node when the first node switches from the fourth node to the fifth node in the network.

[0075] The effects achievable by the third aspect and any possible implementation thereof can be referred to the description of the first aspect, and will not be repeated here.

[0076] Fourthly, this application provides a communication device, comprising: a transceiver module, configured to: send first information to a first node in a network, the first information being used to configure a first set of functions of the first node, the first set of functions including one or more of the following functions: network-side unit functions, MT1 functions, and MT2 functions, wherein the MT1 function includes the MT function in an IAB node, and the MT2 function includes the MT function in a WAB node; the first node is a non-terrestrial network device or a terrestrial network device. This communication device can be applied to core network devices in a network, wherein the network includes non-terrestrial network devices and / or terrestrial network devices.

[0077] In conjunction with the fourth aspect, in one possible implementation, the network-side unit function is any one of the following: DU function, CU function, CU function, and DU function.

[0078] In conjunction with the fourth aspect, in one possible implementation, the first information is carried in the first message, and the first message also includes second information, which is used to indicate the valid time period associated with the first set of functions.

[0079] In conjunction with the fourth aspect, in one possible implementation, the transceiver module is further configured to: receive capability information from the first node, the capability information indicating the set of functions requested by the first node, the requested set of functions being one or more of the following:

[0080] The DU function and MT1 function constitute a set of functions;

[0081] The functional set consisting of DU and CU functions;

[0082] The set of functions consisting of DU, CU, and MT2 functions;

[0083] A set of functions consisting of dual DU function, CU function, MT1 function, and MT2 function;

[0084] The function set consists of DU function, dual CU function and MT2 function;

[0085] The core network function consists of the CU function, DU function, core network function, and MT1 function.

[0086] In conjunction with the fourth aspect, in one possible implementation, the transceiver module is also used to: send third information to the first node, the third information being used to indicate the triggering conditions for the first node to activate the functions in the first function set.

[0087] In conjunction with the fourth aspect, in one possible implementation, the triggering conditions include one or more of the following: the elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the position of the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

[0088] In conjunction with the fourth aspect, in one possible implementation, the transceiver module is further configured to: send fourth information to the first node, the fourth information being used to instruct the first function set to be updated to the second function set.

[0089] In conjunction with the fourth aspect, in one possible implementation, the fourth information includes at least one function and the configuration state corresponding to each of the at least one function. The configuration state is any one of the following: newly added, released or deleted, partial release of functions, function temporarily suspended and activated according to instructions, function temporarily suspended and activated or deleted after meeting conditions; wherein at least one function includes functions in the first function set and functions newly added to the second function set compared to the first function set.

[0090] The effects of the fourth aspect and any possible implementation thereof can be referred to the description of the first aspect, and will not be repeated here.

[0091] Fifthly, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of the necessary computer program or instructions for implementing the functions described in the first aspect. The one or more processors can execute the computer program or instructions, causing the communication device to implement the methods in any possible design or implementation of the first aspect. The interface circuit is used to implement the communication functions within the communication device and / or the communication functions between the communication device and other devices or components.

[0092] In one possible design, the processor is used to communicate with other devices or components through the interface circuit.

[0093] In one possible design, the communication device may also include the memory.

[0094] For example, the aforementioned communication device may be the first node in the network, or a communication module within the first node, or a chip in the first node responsible for communication functions, such as a modem chip (also known as a baseband chip), or a SoC or SIP chip containing a modem module. The first node here may be, for example, a terrestrial network device or a non-terrestrial network device within the network.

[0095] Sixthly, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of the necessary computer program or instructions for implementing the functions described in the second aspect above. The one or more processors are executable to carry out the computer program or instructions, causing the communication device to implement the methods in any possible design or implementation of the second aspect above. The interface circuit is used to implement the communication functions within the communication device and / or the communication functions between the communication device and other devices or components.

[0096] In one possible design, the processor is used to communicate with other devices or components through the interface circuit.

[0097] In one possible design, the communication device may also include the memory.

[0098] For example, the aforementioned communication device may be a core network device, or a communication module in a core network device, or a chip in a core network device that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0099] In a seventh aspect, this application provides a computer-readable storage medium storing computer-readable instructions that, when read and executed by a computer, cause the computer to perform any of the possible designs in the first to second aspects described above.

[0100] Eighthly, this application provides a computer program product that, when read and executed by a computer, causes the computer to perform any of the possible designs in the first to second aspects described above. Attached Figure Description

[0101] Figure 1 Schematic diagrams of non-staring satellite communication systems and staring satellite communication systems;

[0102] Figure 2 A schematic diagram of a satellite communication system is given;

[0103] Figure 3 A schematic diagram of the integrated access backhaul network architecture is shown;

[0104] Figure 4 A schematic diagram illustrating communication based on IAB and WAB architectures is shown.

[0105] Figure 5 A schematic diagram of a satellite communication system employing an access and backhaul network architecture provided for this application;

[0106] Figures 6-10 The diagram illustrates the configuration of various nodes in the network under different scenarios.

[0107] Figure 11 A flowchart illustrating a communication method provided in one embodiment of this application;

[0108] Figures 12-13 A schematic diagram showing the division of DU and CU is shown;

[0109] Figure 14 This diagram illustrates the set of functions configured by a core network device for each node in a network under a communication scenario.

[0110] Figure 15 This diagram illustrates the set of functions configured by a core network device for each node in the network in another communication scenario.

[0111] Figure 16 A schematic diagram of a control plane protocol stack is shown;

[0112] Figure 17 A schematic diagram of a user-plane protocol stack is shown;

[0113] Figure 18This diagram illustrates the set of functions configured by a core network device for each node in the network under another communication scenario.

[0114] Figure 19 The diagram illustrates the activation of different sets of functions under different triggering conditions;

[0115] Figure 20 This diagram illustrates the transition from the first node to the third node.

[0116] Figure 21 This diagram illustrates the transition from the fourth node to the fifth node.

[0117] Figure 22 This is a structural schematic diagram of a communication device provided in one embodiment of this application;

[0118] Figure 23 This is a structural schematic diagram of a communication device provided for another embodiment of this application. Detailed Implementation

[0119] First, before introducing the technical solution of this application, some concepts involved in this application will be introduced.

[0120] 1. Non-terrestrial networks (NTN)

[0121] NTN, comprising nodes such as satellite networks, high-altitude platforms, and unmanned aerial vehicles (UAVs), boasts significant advantages including global coverage, long-distance transmission, flexible networking, convenient deployment, and independence from geographical limitations. It has been widely applied in various fields such as maritime communication, positioning and navigation, disaster relief, scientific experiments, video broadcasting, and Earth observation. The integration of terrestrial mobile communication networks and satellite networks leverages their respective strengths to create a seamless, globally integrated sea, land, air, space, and ground communication network, meeting users' ubiquitous and diverse service needs.

[0122] As a crucial component of NTN, next-generation satellite networks are generally characterized by ultra-dense and heterogeneous structures. Firstly, the scale of satellite networks has grown from 66 satellites in the Iridium constellation to 720 in a single-network constellation, and ultimately extended to the Starlink ultra-dense low Earth orbit (LEO) satellite constellation of over 12,000 satellites. Secondly, satellite networks exhibit heterogeneous characteristics, evolving from traditional single-layer communication networks to multi-layered communication networks. The functions of communication satellite networks are also becoming more complex and diversified, gradually accommodating and supporting functions such as navigation enhancement, Earth observation, and on-orbit processing of multi-dimensional information.

[0123] 2. Beam operation mode of satellite communication system

[0124] Taking satellite communication as an example, based on the working mode of the payload (such as beam), it can generally be divided into non-staring (earth-moving) satellite communication systems and staring (earth-fixed or quasi-earth fixed) satellite communication systems.

[0125] For non-staring satellite communication systems, the satellite's beam coverage area moves along with the satellite. For example... Figure 1 As shown in (a), at time T1, the satellite is at position 1, and the area covered by the satellite's beam is region 1. At time T2, the satellite moves to position 2, and the area covered by the satellite's beam is region 2. At time T3, the satellite moves to position 3, and the area covered by the satellite's beam is region 3.

[0126] For staring satellite communication systems, the satellite dynamically adjusts its beam direction to ensure that the beam approximately covers the same area of ​​the ground. For example... Figure 1 As shown in (b), the satellite is at position 1 at time T1, moves to position 2 at time T2, and moves to position 3 at time T3. During the satellite's movement, the area covered by the satellite's beam is almost the same.

[0127] The technical solution of this application can be applied to scenarios involving non-terrestrial networks (NTN) or the integration of NTN and terrestrial networks (TN). NTN systems can be, for example, satellite communication systems, high altitude platform station (HAPS) communication systems, global navigation satellite systems (GNSS), etc. TN systems can be, for example, 4th generation (4G) communication systems (e.g., long term evolution (LTE) systems), worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) communication systems (e.g., new radio (NR) systems), and future mobile communication systems. The NTN system can be an NTN system integrated with 4G, 5G, and any future generation of communication systems.

[0128] refer to Figure 2 , Figure 2 A schematic diagram of a satellite communication system 200 is provided. (For example...) Figure 2As shown, the satellite communication system 200 includes satellites 201, 202, and 203, and at least one terminal device 204. Satellites communicate with each other via inter-satellite links. Satellites and terminal devices can communicate via uplink and downlink links.

[0129] Figure 2 An exemplary scenario with 5 terminal devices is shown, but the number of terminal devices is not limited in this application embodiment.

[0130] Optionally, the satellite communication system 200 also includes core network equipment. In one possible implementation, the satellite 203 can be connected to the core network equipment to communicate with it.

[0131] In this embodiment, the terminal device can be fixed or movable. This embodiment does not limit the number of satellites and terminal devices included in the satellite communication system 200.

[0132] For example, the satellite in the satellite communication system 200 can be a LEO satellite, a non-geostationary earth orbit (NGEO) satellite, a middle earth orbit (MEO) satellite, or a geostationary earth orbit (GEO) satellite.

[0133] The satellites in the satellite communication system 200 can provide communication, navigation, and positioning services to terminal devices via multiple beams. The satellites in the satellite communication system 200 employ multiple beams to cover service cells, and different beams can communicate through one or more of time-division, frequency-division, space-division, and polarization multiplexing (such as linear polarization, left-hand circular polarization, right-hand circular polarization, elliptic polarization, etc.). The satellites in the satellite communication system 200 can wirelessly communicate with terminal devices through broadcast communication signals and navigation signals, and can also wirelessly communicate with core network equipment.

[0134] The satellite mentioned in the embodiments of this application may be a satellite base station, or may include an orbital receiver or repeater for relaying information, or network equipment carried on a satellite.

[0135] Generally, satellite communication systems include transparent satellite architecture and non-transparent satellite architecture. Transparent transmission, also known as bend-tube relay transmission, means that the signal only undergoes frequency conversion and amplification on the satellite; the satellite is transparent to the signal. Non-transparent transmission, also known as regenerative (access / processing on the satellite) transmission, means that the satellite has some or all of the base station functions. For example, Figure 2Satellites 201 and 202 are non-transparent satellite architectures, while satellite 203 is a transparent satellite architecture.

[0136] In addition, the satellite can operate in either staring mode or non-staring mode. The meanings of staring mode and non-staring mode are described above and will not be repeated here.

[0137] In the embodiments of this application, terminal equipment may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication equipment, user agent, or user device. The terminal device in the embodiments of this application may also be a satellite phone, cellular phone, smartphone, wireless data card, wireless modem, machine-type communication device, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, in-vehicle device or wearable device, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, terminal device in 5G network or future communication network, etc.

[0138] Furthermore, the terminal device can also be a terminal device in an Internet of Things (IoT) system. IoT is an important component of future information technology development, and its main technical characteristic is connecting objects to networks through communication technologies, thereby realizing an intelligent network that enables human-machine interconnection and machine-to-machine interconnection. This application does not limit the specific form of the terminal device.

[0139] In addition, the terminal device can also be a terminal device in an NTN communication scenario. For example, the terminal device can be a terminal device in a satellite communication scenario.

[0140] It should be understood that in the embodiments of this application, the terminal device can be a means for implementing the functions of the terminal device, or a means for supporting the terminal device in implementing the functions, such as a communication module or a chip system, which can be installed in the terminal. In the embodiments of this application, the chip system can be composed of chips, or it can include chips and other discrete devices.

[0141] In this application embodiment, the network device can be any device with wireless transceiver capabilities, including but not limited to: evolved NodeB (eNB), radio network controller (RNC), node base (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home node B, HNB), base band unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP) in a wireless fidelity (WIFI) system, etc. It can also be a 5G, such as a gNB in ​​an NR system, or a transmission point (TRP or TP), one or a group (including multiple antenna panels) of an antenna panel in a 5G base station, or a network node constituting a gNB or transmission point, such as a base band unit (BBU) or a distributed unit (TRP). unit, DU) etc.

[0142] For example, the network device can also be a network device in an NTN communication scenario. For example, the network device can be a satellite or a base station deployed on a satellite in a satellite communication scenario. It should be understood that in the embodiments of this application, the network device can be a means for implementing the functions of the network device, or it can be a means that supports the network device in implementing those functions, such as a chip system, which can be installed in the network device.

[0143] It should also be understood that the network devices and terminal devices in the embodiments of this application can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; or on water; or on aircraft, balloons, and satellites in the air. The embodiments of this application do not limit the application scenarios of the network devices and terminal devices.

[0144] In this embodiment, the core network equipment, acting as the bearer network, provides an interface to the data network, offering user equipment (UE) communication connections, authentication, management, policy control, and data service delivery. The core network (CN) can further include: access and mobility management function (AMF), session management function (SMF), authentication server function (AUSF), policy control function (PCF), user plane function (UPF), and other network elements. The AMF element manages UE access and mobility, primarily responsible for UE authentication, UE mobility management, and UE paging functions.

[0145] In terrestrial communications, terminal access to the core network is typically achieved through an integrated access backhaul network architecture. For example... Figure 3 As shown, the integrated access and backhaul network architecture includes an access part and a backhaul part. The backhaul part can reuse the access mechanism (such as the Uu port protocol design), thereby reducing network deployment costs.

[0146] IAB architecture and WAB architecture are two commonly used integrated access backhaul network architectures. The following section introduces these two communication system architectures. Figure 4 (a) in the diagram shows a schematic of communication based on the IAB architecture. Figure 4 (b) in the diagram shows a schematic of communication based on the WAB architecture.

[0147] 1. IAB architecture

[0148] The purpose of IABs is to support wireless backhaul and relay links, enabling flexible and very dense deployment of NR cells without proportionally encrypting limited transmission networks. Typical deployment scenarios include supporting outdoor small cell deployments, indoor small cell deployments, and even mobile relays (e.g., deploying IAB nodes in vehicles).

[0149] like Figure 4 As shown in (a), the IAB architecture includes IAB node 401, IAB node 402, IAB host 403, and core network device 404. Among them, IAB node 401 is connected to IAB node 402, IAB node 402 is connected to IAB host 403, and IAB host 403 is directly connected to core network device 404.

[0150] The physical interface between the UE and the IAB node is the Uu interface, and the physical interface between the IAB host and the core network equipment is the NG interface.

[0151] It should be understood that in this embodiment of the application, the IAB host 403 can be connected to multiple IAB nodes, and each IAB node can also be connected to other IAB nodes or UEs. As an example, Figure 4 (a) shows only one IAB node 402 connected to IAB host 403, and only one IAB node 401 connected to IAB node 402, but this does not constitute a limitation on the embodiments of this application.

[0152] Specifically, in the IAB architecture, each IAB node needs to maintain a radio link to its parent node and also maintain radio links to its child nodes. If the child node of an IAB node is a terminal device, then the radio link between that IAB node and its child node (i.e., the terminal device) is called a radio access link. If the child node of an IAB node is another IAB node, then the radio link between that IAB node and its child node (i.e., the other IAB node) is called a radio backhaul link. Figure 4 Taking (a) as an example, the link between the UE and the IAB node is a radio access link, the link between IAB node 401 and IAB node 402 is a radio backhaul link, and the link between IAB node 402 and IAB host 403 is a radio backhaul link.

[0153] Each IAB node consists of a mobile termination (MT) component and a distribution unit (DU) component. It is also referred to as: each IAB node includes MT functionality and DU functionality. In this application, the MT in an IAB node is also referred to as IAB-MT, and the DU in an IAB node is also referred to as IAB-DU. When an IAB node faces its parent node, it can act as a terminal device, i.e., the role of IAB-MT; when an IAB node faces its child node (which may be another IAB node or a terminal device), it is considered a network device, i.e., the role of IAB-DU.

[0154] by Figure 4Taking (a) as an example, when IAB node 401 faces its parent node (i.e., IAB node 402), it is considered a terminal device, i.e., a MT (Metal Transporter). When IAB node 401 faces its child node (i.e., the UE connected to IAB node 401 in the diagram), it is considered a network device, i.e., a DU (Digital Access Device). Similarly, when IAB node 402 faces its parent node (i.e., IAB host 403), it is considered a terminal device, i.e., a MT. When IAB node 402 faces its child node (i.e., IAB node 401), it is considered a network device, i.e., a DU (Digital Access Device).

[0155] Specifically, in this application, the IAB host 403 can be an access network element with complete base station functionality or an access network element with a separated centralized unit (CU) and user plane (DU). In this application, the centralized unit in the IAB host is also referred to as Donor-CU (or simply CU), and the distributed unit in the IAB host is referred to as Donor-DU. The Donor-CU may also be in a form where the control plane (CP) and user plane (UP) are separated. For example, a CU may consist of one CU-CP and one or more CU-UPs.

[0156] Each IAB node's DU portion is connected to the IAB host via the F1 interface.

[0157] Specifically, the F1 interface consists of two parts: a control plane and a user plane. The user plane is maintained between the DU part of the IAB node and the Donor-CU-UP, while the control plane is maintained between the DU part of the IAB node and the Donor-CU-CP.

[0158] 2. WAB Architecture

[0159] The main difference between the WAB architecture and the IAB architecture is that the WAB node carries more complex functions, carrying the complete gNB (including gNB-DU and gNB-CU) and UE / MT parts, that is, it can provide complete gNB functions and MT functions. The gNB functions include CU functions and DU functions.

[0160] like Figure 4 As shown in (b), the WAB node includes the WAB-gNB node and the WAB-MT node, which can also be called WAB-UE. Among them, WAB-gNB provides access for ordinary UEs as a complete gNB, while WAB-MT can act as a UE and access NG-RAN (i.e., BH-gNB in ​​the figure) by multiplexing the NR Uu protocol in a one-hop manner.

[0161] like Figure 4 As shown in (b), the UE accesses the WAB-gNB through the Uu port. Then, the WAB-MT wraps the UE's data in the WAB-MT's protocol data unit session (PDU) and sends it through the WAB-MT's Uu port, through the BH-gNB connected to the WAB-MT, and finally to the WAB-MT's 5GC (also known as BH-5GC). Then, the BH-5GC sends the data to the UE's 5GC according to the Internet Protocol (IP) routing.

[0162] As can be seen, in the WAB architecture, WAB-MT carries the service data (including control plane and data plane services) of the UE set under WAB-gNB by establishing a session (i.e., PDU session).

[0163] It should be noted that the WAB-gNB can also establish logical Xn interfaces with the BH-gNB and other nearby base stations (other gNBs). The Xn interface is the interface between base stations and is mainly used for signaling interaction such as handover.

[0164] For details on the Xn, N2, N3, and N6 interfaces, please refer to the descriptions in relevant technical documents; they will not be elaborated upon here.

[0165] based on Figure 4 It can be seen that the IAB architecture relies on a separate CU-DU architecture, resulting in high implementation complexity. If the IAB architecture is directly adopted in satellite scenarios, the frequent handover between CU and DUs complicates mobility management and impacts communication efficiency, especially in low Earth orbit (LEO) satellite scenarios. Furthermore, in multi-hop satellite scenarios, the latency (<5ms) of the F1 interface is difficult to guarantee, further affecting communication efficiency. While the WAB architecture is relatively simpler to implement and deploy than the IAB architecture, if it is directly adopted in satellite scenarios, especially in multi-hop satellite scenarios, the PDU session from BH-gNB to BH-5GC will involve tunnels within tunnels, leading to extremely high complexity and overhead, and impacting communication efficiency.

[0166] In view of this, this application proposes a communication method and a communication device. The technical solution proposed in this application dynamically configures the functions of each node in the network (e.g., terrestrial network equipment or non-terrestrial network equipment) through core network equipment to adapt to different non-terrestrial communication scenarios, thereby improving communication efficiency.

[0167] Understandable. Figure 4The IAB node, IAB host, and WAB node described in (a) and (b) are merely examples of names. It is understood that as the network architecture changes or evolves, the IAB node, IAB host, and WAB node may have other names, which do not constitute a limitation of this application. In the following text, this application uses IAB node as an example of a name to indicate having DU and MT1 functions, IAB host as an example of a name to indicate having DU and CU functions, and WAB node as an example of a name to indicate having DU, CU, and MT2 functions.

[0168] For example, taking NTN communication as a satellite communication example, Figure 5 This is a schematic diagram of a satellite communication system employing an access and backhaul network architecture, as provided in this application. Figure 5 As shown, the satellite communication system 500 includes non-terrestrial network equipment, terrestrial network equipment, and UE.

[0169] In this application, non-terrestrial network devices in the network are also referred to as NTN nodes, and terrestrial network devices in the network are also referred to as TN nodes (terrestrial network, TN). However, it should be understood that NTN node and TN node are merely examples of names and do not constitute a limitation of this application. For example, an NTN node can also be called an NTN device, and a TN node can also be called a TN device.

[0170] Understandably, in this application, the satellite communication system employing an access and backhaul network architecture has two types of communication links: an access link and a backhaul link. The access link is also called an Access link, and the backhaul link is also called a Backhaul link. Specifically, if a network device (node) has a UE as a child node, the radio link between that node and its child node (i.e., the UE) is called an Access link. Conversely, if a network device has other nodes as child nodes, the radio link between that network device and its child nodes (i.e., other network devices) is called a radio backhaul link.

[0171] by Figure 5 For example, the communication link between UE1 and TN node 1 is an access link, and the communication link between TN node 1 and NTN node 1 is a backhaul link. The communication link between UE2 and TN node 2 is an access link, and the communication link between TN node 2 and NTN node 2 is a backhaul link. The communication link between UE3 and NTN node 1 is an access link.

[0172] It should be noted that, Figure 5 This example only uses 3 NTN nodes and 3 TN nodes. This application does not limit the number of NTN nodes or TN nodes in its embodiments.

[0173] Additionally, it should be noted that the embodiments of this application do not restrict the location of the core network equipment in satellite communication systems employing an access and backhaul network architecture. For example, the core network equipment can be located on the ground, in the air, or have some functions in the air and others on the ground.

[0174] For example, in the case of such Figure 6 In the scenario shown, NTN node 1, NTN node 2, and NTN node 3 have the functionality of IAB nodes. Therefore, if... Figure 6 As shown, the core network equipment can configure TN node 1 and TN node 2 as IAB Donors.

[0175] In this configuration method, such as Figure 6 As shown, initially, UE1 and UE2 access TN Node 1, which acts as the IAB Donor, via the access link between UE1 and NTN Node 2, and the backhaul link between NTN Node 2 and TN Node 1, to access the core network through TN Node 1. As NTN Node 2 moves from left to right, it switches its connection to TN Node 2, which acts as the IAB Donor. At this point, UE1 and UE2 access TN Node 2, which acts as the IAB Donor, via the access link between UE1 and NTN Node 2, and the backhaul link between NTN Node 2 and TN Node 2, to access the core network through TN Node 2.

[0176] In this application, configuring a node as an IAB node can also be understood as configuring the function of that node as an IAB node. Similarly, configuring a node as an IAB Donor can be understood as configuring the function of that node as an IAB Donor, which will not be elaborated further below.

[0177] It should be noted that, Figure 6 The scenario shown is just one example, for example, Figure 6 The scenario shown can also include more NTN nodes and / or TN nodes.

[0178] For example, in the case of such Figure 7 In the scenario shown, NTN node 2 and NTN node 4 have the functionality of IAB nodes. Therefore, if... Figure 7 As shown, the core network equipment can configure NTN node 1 and NTN node 3 as IAB Donors.

[0179] In this configuration method, such as Figure 7As shown, initially, UE1 / UE2 accesses NTN Node 3, which acts as the IAB Donor, via the access link between UE1 and NTN Node 2, and the backhaul link between NTN Node 2 and NTN Node 3, to access the core network through NTN Node 3. As NTN Node 2 moves from right to left, it switches its connection to NTN Node 1, which acts as the IAB Donor. At this point, UE1 / UE2 accesses NTN Node 1, the IAB Donor, via the access link between UE1 and NTN Node 2, and the backhaul link between NTN Node 2 and NTN Node 1, to access the core network through NTN Node 1.

[0180] Similarly, it should be noted that, Figure 7 The scenario shown is just one example, for example, Figure 7 The scenario shown can also include more NTN nodes and / or TN nodes.

[0181] For example, in the case of such Figure 8 In the scenario shown, NTN node 2 and NTN node 3 have the functions of IAB nodes. Therefore, if... Figure 8 As shown, the core network equipment can configure TN node 1 and NTN node 3 as IAB Donors.

[0182] In this configuration method, such as Figure 8 As shown, initially, UE1 / UE2 accesses TN node 1, which acts as the IAB Donor, via the access link between UE1 and NTN node 2, and the backhaul link between NTN node 2 and TN node 1, to access the core network through TN node 1. As NTN node 2 moves from left to right, it switches to NTN node 3, which acts as the IAB Donor. At this point, UE1 / UE2 accesses NTN node 3, the IAB Donor, via the access link between UE1 and NTN node 2, and the backhaul link between NTN node 2 and NTN node 3, to access the core network through NTN node 3.

[0183] Similarly, it should be noted that, Figure 8 The scenario shown is just one example, for example, Figure 8 The scenario shown can also include more NTN nodes and / or TN nodes.

[0184] The above examples, using the IAB architecture as an example, illustrate several dynamic configuration scenarios based on different communication scenarios. However, it should be understood that these are merely examples and do not constitute a limitation of the embodiments of this application.

[0185] Next, let's combine Figures 9-10 The WAB architecture will be used as an example for explanation.

[0186] For example, in the case of such Figure 9 In the scenario shown, such as Figure 9 As shown, TN node 1 and TN node 2 can be configured as WAB nodes. In this example, after TN node 1 is configured as a WAB node, TN node is also called WAB node 1, and after TN node 2 is configured as a WAB node, TN node 2 is also called WAB node 2.

[0187] As the concept of WAB nodes mentioned earlier suggests, a WAB node carries the functions of both WAB-MT1 and WAB-gNB. For example, WAB node 1 includes WAB-MT1 and WAB-gNB1, and WAB node 2 includes WAB-MT2 and WAB-gNB2.

[0188] In this configuration method, such as Figure 9 As shown, for TN node 1, it serves the UEs within its coverage area (UE1 in the figure) through WAB-gNB1, and connects to the NTN gNB via WAB-MT1 and finally connects to the core network, thus providing services for UE1. For TN node 2, it serves the UEs within its coverage area (UE2 in the figure) through WAB-gNB2, and connects to the NTN gNB via WAB-MT2 and finally connects to the core network, thus providing services for UE2.

[0189] Optionally, in this scenario, the NTN node can also connect to other base stations (such as terrestrial base stations or non-terrestrial base stations).

[0190] Similarly, it should be noted that, Figure 9 The scenario shown is just one example, for example, Figure 9 The scenario shown can also include more NTN nodes and / or TN nodes.

[0191] For example, in the case of such Figure 10 In the scenario shown, such as Figure 10 As shown, NTN node 1 can be configured as a WAB node. Similarly, as the concept of a WAB node mentioned earlier suggests, a WAB node carries both WAB-MT and WAB-gNB functions.

[0192] like Figure 10 As shown, in this configuration, NTN node 1 serves the UEs (UE1 and UE2 in the figure) within its coverage area through its included WAB-gNB, and connects to the NTN gNB or TN gNB through its included WAB-MT and finally connects to the core network to provide services for UE1 and UE2.

[0193] Similarly, it should be noted that, Figure 10 The scenario shown is just one example, for example, Figure 10The scenario shown can also include more NTN nodes and / or TN nodes.

[0194] Below, in conjunction with Figure 11 Describe in detail the communication method provided in this application. For example... Figure 11 As shown, the method includes:

[0195] S1101, the core network device sends first information to the first node in the network, and the first node receives the first information accordingly; the first information is used to configure the first function set of the first node, and the first function set includes one or more of the following functions: network side unit function, MT1 function, MT2 function, MT1 function includes the MT function in the IAB node, and MT2 function includes the MT function in the WAB node.

[0196] The aforementioned network can be considered a network used for terminal device access. This network includes non-terrestrial network equipment and / or terrestrial network equipment. Non-terrestrial network equipment can be, for example, satellites.

[0197] The first node mentioned above is either a non-terrestrial network device or a terrestrial network device. As mentioned earlier, non-terrestrial network devices are also called NTN nodes in the network, and terrestrial network devices are also called TN nodes. That is, the first node mentioned above is either an NTN node or a TN node in the network.

[0198] In this application, the core network device can send first information to the first node, the first information being used to configure the first node's first function set. Alternatively, the first information being used to configure the first node's first function set can be replaced with: the first information being used to indicate the first node's first function set.

[0199] In this application, the first functional set includes one or more of the following functions: network-side unit function, MT1 function, and MT2 function.

[0200] For example, the network-side unit function can be any of the following: DU function, CU function, CU function, and DU function. Understandably, CU and DU functions can also be replaced by gNB functions. That is, gNB functions include both CU and DU functions.

[0201] In this application, the functional division of DU and CU can be implemented in different ways.

[0202] For example, in one implementation, such as Figure 12 As shown, the left side of the black dashed line represents the CU function, and the right side of the black dashed line represents the DU function.

[0203] For example, with Figure 12Taking option 1 as an example, the function of CU corresponds to the function of the radio resource control (RRC) layer, and the function of DU corresponds to the functions of the packet data convergence protocol (PDCP) layer, radio link control (RLC) layer, media access control (MAC) layer, physical (PHY) layer, and radio frequency (RF) layer.

[0204] For example, with Figure 12 Taking option 2 as an example, the functions of CU correspond to the functions of RRC layer and PDCP layer, and the functions of DU correspond to the functions of RLC layer, MAC layer, PHY layer and RF.

[0205] For example, with Figure 12 Taking option 3 as an example, the functions of CU correspond to the functions of RRC layer, PDCP layer and RLC, and the functions of DU correspond to the functions of MAC layer, PHY layer and RF.

[0206] For example, with Figure 12 Taking option 4 as an example, the functions of CU correspond to the functions of RRC layer, PDCP layer, RLC layer and MAC layer, and the functions of DU correspond to the functions of PHY layer and RF.

[0207] For example, with Figure 12 Taking option 5 as an example, the functions of CU correspond to the functions of RRC layer, PDCP layer, RLC layer, MAC layer and PHY layer, and the functions of DU correspond to the functions of RF.

[0208] In another implementation, it is possible to Figure 12 Based on this, the RLC layer, MAC layer, and PHY layer are further divided, for example... Figure 13 As shown, the RLC layer is further divided into High-RLC and Low-RLC, the MAC layer into High-MAC and Low-MAC, and the PHY layer into High-PHY and Low-PHY. Figure 13 As shown, the left side of the black dashed line represents the CU function, and the right side of the black dashed line represents the DU function.

[0209] For example, with Figure 13 Taking option 1 as an example, the function of CU corresponds to the function of the RRC layer, and the function of DU corresponds to the functions of the PDCP layer, High-RLC layer, Low-RLC layer, High-MAC layer, Low-MAC layer, High-PHY layer, Low-PHY layer and RF.

[0210] For example, with Figure 13 Taking option 2 as an example, the functions of CU correspond to the functions of RRC layer and PDCP layer, and the functions of DU correspond to the functions of High-RLC layer, Low-RLC layer, High-MAC layer, Low-MAC layer, High-PHY layer, Low-PHY layer and RF.

[0211] For example, with Figure 13 Taking option 3 as an example, the functions of CU correspond to the functions of RRC layer, PDCP layer and High-RLC layer, and the functions of DU correspond to the functions of Low-RLC layer, High-MAC layer, Low-MAC layer, High-PHY layer, Low-PHY layer and RF.

[0212] For example, with Figure 13 Taking option 4 as an example, the functions of CU correspond to the functions of RRC layer, PDCP layer, High-RLC layer and Low-RLC layer, and the functions of DU correspond to the functions of High-MAC layer, Low-MAC layer, High-PHY layer, Low-PHY layer and RF.

[0213] For example, with Figure 13 Taking option 5 as an example, the functions of CU correspond to the functions of RRC layer, PDCP layer, High-RLC layer, Low-RLC layer and High-MAC layer, while the functions of DU correspond to the functions of Low-MAC layer, High-PHY layer, Low-PHY layer and RF.

[0214] For example, with Figure 13 Taking option 6 as an example, the functions of CU correspond to the functions of RRC layer, PDCP layer, High-RLC layer, Low-RLC layer, High-MAC layer and Low-MAC layer, and the functions of DU correspond to the functions of High-PHY layer, Low-PHY layer and RF.

[0215] For example, with Figure 13 Taking option 7 as an example, the functions of CU correspond to the functions of RRC layer, PDCP layer, High-RLC layer, Low-RLC layer, High-MAC layer, Low-MAC layer and High-PHY layer, while the functions of DU correspond to the functions of Low-PHY layer and RF.

[0216] For example, with Figure 13 Taking option 8 as an example, the functions of CU correspond to the functions of RRC layer, PDCP, High-RLC layer, Low-RLC layer, High-MAC layer, Low-MAC layer, High-PHY layer and Low-PHY layer, and the functions of DU correspond to the functions of RF.

[0217] Optionally, the DU function can be deployed on NTN nodes, while the CU function can be deployed in core network equipment or other non-terrestrial network equipment.

[0218] In this application, the MT1 function includes the function of the MT in the IAB node, and the MT2 function includes the function of the MT in the WAB.

[0219] For example, MT1 functionality includes the functions of the PHY layer, MAC layer, RLC layer, and backhaul adaptation protocol (BAP) layer. MT2 functionality includes the functions of the PHY layer, MAC layer, RLC layer, PDCP layer, and SDAP / RRC layer. Among them:

[0220] The SDAP layer is primarily responsible for mapping Quality of Service (QoS) data to the data radio bearer (DRB). The RRC layer is primarily responsible for control plane procedures related to the radio access network. The PDCP layer is primarily responsible for IP header compression, encryption, and integrity protection. The BAP layer is responsible for packet routing (L2 routing) and bearer mapping in the network. The RLC layer is primarily responsible for data segmentation and reassembly. The MAC layer is primarily responsible for logical channel multiplexing, hybrid automatic repeat request (HARQ) retransmission, and scheduling-related functions. The PHY layer is primarily responsible for encoding, decoding, modulation, demodulation, and multi-antenna mapping.

[0221] For a more detailed description of the processing performed by the SDAP layer, RRC layer, PDCP layer, BAP layer, RLC layer, and PHY layer, please refer to the descriptions in the relevant technologies, which will not be repeated here.

[0222] S1102, the first node enables the functions in the first function set.

[0223] In this application, after the first node receives the first information, it obtains a first set of functions based on the first information and enables the functions in the first set of functions. "Enable" can also be replaced with "configure," "start," "generate," etc.

[0224] Understandably, in this application, the core network equipment can configure a first set of functions to the first node based on the communication scenario. For example, for an NTN or TN node, the first set of functions configured by the core network equipment may be different in different scenarios. That is, it can be considered that the core network equipment can dynamically configure the functions of NTN or TN nodes in the network.

[0225] For example, in such Figure 14In the scenario shown in (a), there is a link between TN node 1 and NTN node 1, and a link between NTN node 1 and NTN node 2. NTN node 2 is connected to the ground station, and the ground station is connected to the core network equipment.

[0226] like Figure 14 As shown in (b), the core network equipment can be configured with the following function sets for TN node 1: DU and MT1 functions; and for NTN node 2: CU, DU, and MT2 functions. Correspondingly, TN node 1 is configured with DU and MT1 functions, NTN node 2 is configured with CU, DU, and MT2 functions.

[0227] In this configuration, TN node 1 and NTN node 1 can be considered as IAB nodes, and NTN node 2 can be considered as both an IAB host and a WAB node.

[0228] In this configuration method, such as Figure 14 As shown, for UE1, it accesses the ground station and ultimately the core network via the access link between UE1 and TN node 1, the backhaul link between TN node 1 and NTN node 1, the backhaul link between NTN node 1 and NTN node 2, and the backhaul link between NTN node 2 and the ground station. For UE2, it accesses the ground station and ultimately the core network via the access link between UE2 and NTN node 1, the backhaul link between NTN node 1 and NTN node 2, and the backhaul link between NTN node 2 and the ground station.

[0229] For example, in such Figure 15 In the network scenario shown in (a), there is a link between TN node 1 and NTN node 1, and a link between NTN node 1 and TN node 2. TN node 2 is connected to the core network equipment.

[0230] like Figure 15 As shown in (b), the core network equipment can be configured with the following function sets for TN node 1: gNB and MT2 functions; for NTN node 1: DU and MT1 functions; and for TN node 2: CU and DU functions. Correspondingly, TN node 1 is configured with gNB and MT2 functions, NTN node 1 with DU and MT1 functions, and TN node 2 with CU and DU functions.

[0231] In this configuration, TN node 1 can be considered as a WAB node, NTN node 1 can be considered as an IAB node, and TN node 2 can be considered as an IAB host.

[0232] In this configuration method, such as Figure 15 As shown, for UE1, it accesses TN node 2 through the access link between UE1 and TN node 1, the backhaul link between TN node 1 and NTN node 1, and the backhaul link between NTN node 1 and TN node 2, and finally accesses the core network. For UE2, it accesses TN node 2 through the access link between UE2 and NTN node 1, the backhaul link between NTN node 1 and TN node 2, and finally accesses the core network.

[0233] refer to Figure 16 and Figure 17 Taking UE1 as an example, the following is an illustrative representation: Figure 15 The protocol stacks of the control plane (CP) and user plane (UP) under the configuration. Figure 16 It shows in Figure 15 The protocol stack of the control plane under the configuration, Figure 17 It shows in Figure 15 The user-plane protocol stack under the configuration.

[0234] For control surfaces, such as Figure 16 As shown, the WAB-gNB in ​​TN node 1 and UE1 have established equivalent RRC, PDCP, RLC, MAC, and PHY layers. NTN node 1 and its WAB-MT have established equivalent RLC, MAC, and PHY layers, as do NTN node 1 and TN node 2. TN node 2 and its WAB-MT in TN node 1 have established equivalent SDAP and PDCP layers. TN node 2 and the UPF in the core network equipment have established equivalent GTP-U, UDP, IP, and L1 / L2 layers. A peer-to-peer IP layer is established between the UPF in the core network equipment and the WAB-MT in TN node 1. A peer-to-peer IP layer and L1 / L2 layer are established between the UPF in the core network equipment and the AMF of UE1. A peer-to-peer NAS layer is established between the AMF of UE1 and the UE. A peer-to-peer NG-AP layer and SCTP layer are established between the AMF of UE1 and the WAB-gNB in ​​TN node 1.

[0235] From the user's perspective, such as Figure 17As shown, a peer-to-peer SDAP, PDCP, RLC, MAC, and PHY layer is established between WAB-gNB in ​​TN node 1 and UE1. A peer-to-peer RLC, MAC, and PHY layer is established between NTN node 1 and WAB-MT in TN node 1, and a peer-to-peer RLC, MAC, and PHY layer is established between NTN node 1 and TN node 2. A peer-to-peer SDAP and PDCP layer is established between TN node 2 and WAB-MT in TN node 1. A peer-to-peer GTP-U, UDP, IP, and L1 / L2 layer is established between TN node 2 and the UPF in the core network equipment. A peer-to-peer IP layer is established between the UPF in the core network equipment and WAB-MT in TN node 1. A peer-to-peer IP layer and L1 / L2 layer are established between the UPF in the core network equipment and the AMF of UE1. A peer-to-peer IP layer is established between the AMF of UE1 and the UE. A peer-to-peer GTP-U and UDP layers are established between UE1's AMF and the WAB-gNB in ​​TN node 1. This functional configuration leverages the advantages of IAB for multi-hop transmission and the ease of deployment and design of the WAB architecture, while avoiding the nested tunneling problem of WAB in multi-hop scenarios, thereby improving communication efficiency.

[0236] For example, in such Figure 18 In the network scenario shown in (a), there is a link between TN node 1 and NTN node 1, and a link between NTN node 1 and TN node 2. TN node 2 is connected to the core network equipment.

[0237] like Figure 18 As shown in (b), the core network equipment can be configured with the following function sets for TN node 1: gNB function (CU function + DU function) and MT2 function; and for NTN node 1: gNB function, UPF, and MT1 function to avoid tunnel-within-a-tunnel situations. The function set for TN node 2 can be configured with gNB function and UPF. Correspondingly, TN node 1 is configured with gNB and MT2 functions, NTN node 1 is configured with gNB, UPF, and MT1 functions, and TN node 2 is configured with gNB and UPF.

[0238] In this configuration, TN node 1 can be considered as a WAB node, and TN node 2 can be considered as an IAB host with UPF.

[0239] based on Figure 11 The method provided in the embodiments allows the core network device to configure different sets of functions for each node (network device) in the network. For example, the core network device can configure different sets of functions for the first node in different non-terrestrial communication (e.g., satellite communication) scenarios. That is, based on Figure 11The method provided in the embodiments allows the core network device to flexibly configure nodes in the network. For example, it can flexibly configure different sets of functions for the first node according to the needs of the communication scenario, so that the first node has access / backhaul functions to realize non-terrestrial communication, thereby improving communication efficiency and reducing deployment costs.

[0240] Optionally, the first information is carried in the first message, and the first message also includes second information, which is used to indicate the valid time period associated with the first function set; correspondingly, the first node starts the functions in the first function set, including: the first node starts the functions in the first function set during the valid time period.

[0241] Optionally, the first information is carried in the first message, which also includes indication information for indicating the location area associated with the first function set; correspondingly, the first node activating the function in the first function set includes: the first node activating the function in the first function set in the aforementioned location area.

[0242] Optional, in Figure 11 Before the core network device sends the first information to the first node, the first node may first report its own capability information to the core network device. The capability information indicates the set of functions requested by the first node, and the requested set of functions may be one or more of the following:

[0243] The DU function and MT1 function constitute a set of functions;

[0244] The functional set consisting of DU and CU functions;

[0245] The set of functions consisting of DU, CU, and MT2 functions;

[0246] A set of functions consisting of dual DU function, CU function, MT1 function, and MT2 function;

[0247] The function set consists of DU function, dual CU function and MT2 function;

[0248] The set of functions consists of CU function, DU function, UPF, and MT1 function.

[0249] Understandably, the set of functions consisting of the DU function, CU function, and MT2 function can also be interpreted as the set of functions consisting of the gNB function and MT2 function.

[0250] Understandably, the set of functions consisting of the CU function, DU function, UPF, and MT1 function can also be interpreted as the set of functions consisting of the gNB function, UPF, and MT1 function.

[0251] For example, capability information can be reported via RRC messages, MAC control element (CE), uplink control information (UCI), physical uplink control channel (PUCCH), or physical uplink shared channel (PUSCH).

[0252] For example, "capability information indicates the set of functions requested by the first node" can be replaced with "capability information indicates the set of functions supported by the first node".

[0253] In one implementation, the capability information may include a pattern field, where there is a correspondence between the patterns in the pattern field and the set of functions.

[0254] For example, when the pattern in the pattern field is IAB node pattern, it indicates a request for a set of functions consisting of DU and MT1 functions.

[0255] For example, when the pattern in the pattern field is IAB donor pattern, it indicates that the request consists of a set of functions including DU and CU functions.

[0256] For example, when the mode in the mode field is WAB node mode, it indicates that a set of functions consisting of gNB function and MT2 function is requested.

[0257] For example, when the mode in the mode field is Joint IAB node / WAB node mode, it indicates a request for a set of functions consisting of dual DU function, CU function, MT1 function, and MT2 function.

[0258] For example, when the pattern in the pattern field is Joint IAB donor / WAB node mode, it indicates a request for a set of functions consisting of DU function, dual CU function, and MT2 function.

[0259] For example, when the mode in the mode field is a new mode (custom mode), it indicates a request for a set of functions consisting of gNB functions, core network functions, and MT1 functions. Core network functions can be, for example, at least one of the following: UPF, access and mobility management function (AMF), session management function (SMF), policy control function (PCF), unified data management function (UDM), and authentication server function (AUSF).

[0260] Understandably, the first node indicates the set of functions requested by reporting capability information to the core network equipment, which can help the core network equipment determine the first set of functions to be configured for the first node.

[0261] For example, in one instance, after the core network device receives the capability information reported by the first node, it sends back an acknowledgment (ACK) and configures the first function set to the first node. This first function set is included in the function set requested by the first node.

[0262] For example, in another example, after receiving the capability information reported by the first node, the core network device sends a negative acknowledgement (NACK) response and configures a first function set for the first node. This configured first function set is not included in the function set requested by the first node's capability information. Optionally, in this example, the core network device may also indicate the mode corresponding to the first function set to the first node. Optionally, the core network device may also send third information to the first node, which indicates the triggering conditions for the first node to enable the functions in the first function set. Correspondingly, enabling the functions in the first function set by the first node includes: enabling the functions in the first function set when the triggering conditions are met. That is, the first node will only configure the functions in the first function set when the triggering conditions are met.

[0263] For example, the third information is carried in the first message described above.

[0264] For example, the triggering conditions include one or more of the following: triggering condition 1, triggering condition 2, and triggering condition 3.

[0265] Among them, trigger condition 1 is: the elevation angle between the first node and the reference position is greater than the preset threshold or the distance between the position of the first node and the reference position is less than the preset threshold;

[0266] Among them, trigger condition 2 is: the clock of the first node is within a preset time period;

[0267] Among them, trigger condition 3 is: the time delay between the first node and the reference node is less than the preset threshold.

[0268] For example, the core network device can configure multiple function sets and corresponding trigger conditions for each function set to the first node. The first function set is contained in the multiple function sets. Correspondingly, when the trigger condition corresponding to a certain function set is met, the first node configures / enables / enables that function set.

[0269] Combination Figure 19 The scenario shown and Table 1 illustrate an example of configuring the first node based on trigger conditions. Figure 19 As shown:

[0270] At time 1, the coverage area of ​​NTN node 1 includes UE1 and UE2. UE1 accesses NTN node 1 through TN node 1, and UE2 accesses NTN node 1 directly. NTN node 1 satisfies trigger condition 2, and TN node 1 satisfies trigger condition 3. Therefore, NTN node 1 and TN node 1 are configured as IAB nodes, meaning that the function set configured for NTN node 1 and TN node 1 includes DU function + MT1 function.

[0271] At time 2, there is a backhaul link between NTN node 1 and TN node 1, as well as a backhaul link with the ground station, and the ground station is connected to the core network. NTN node 1 satisfies both triggering condition 1 and triggering condition 3, and TN node 1 satisfies triggering condition 2. Therefore, NTN node 1 is configured with the Joint NTN IAB donor and WAB function, and TN node 1 is configured with the gNB function. That is, the function set configured by NTN node 1 includes dual DU function + CU function + MT1 function + MT2 function, and the function set configured by NTN node 1 includes DU function + CU function.

[0272] At time 3, the coverage area of ​​NTN node 1 includes UE3 and UE4. UE4 accesses NTN node 1 through TN node 1, and UE3 directly accesses NTN node 1. NTN node 1 is connected to the ground station. NTN node 1 meets trigger condition 1. If NTN node 1 meets trigger condition 1, then NTN node 1 is configured with gNB function and TN node 1 is configured with WAB node function. That is, the function set configured by NTN node 1 includes DU function + CU function, and the function set configured by TN node 1 includes DU function + CU function + MT2 function.

[0273] Table 1

[0274]

[0275] Optionally, the core network device may also send a fourth message to the first node, which is used to indicate that the first function set is updated to the second function set.

[0276] For example, the fourth piece of information includes at least one function and the configuration status corresponding to each function, wherein the configuration status is any one of the following:

[0277] New addition;

[0278] Release / delete;

[0279] Partial release: Releasing only a portion of the functionality, for example, partially releasing the MT2 function and configuring it as the MT1 function after adding the BAP function.

[0280] Suspend / Inactive: The function is temporarily suspended and activated upon instruction;

[0281] Conditional suspend: The function is temporarily suspended and will take effect or be deleted after the conditions are met.

[0282] For example, if the core network device configures at least one function to the first node that is a function in the fourth function set, then the configuration of at least one function by the core network device to the first node and the configuration status corresponding to the at least one function can also be replaced by: the core network device configures the fourth function set to the first node and the configuration status corresponding to the fourth function set.

[0283] In other words, under this implementation, the core network device will configure at least one function and the configuration status corresponding to at least one function to the first node. Correspondingly, the first node updates the first function set to the second function set based on the functions in the currently enabled first function set and the at least one function configured in the fourth information and the configuration status corresponding to at least one function.

[0284] Understandably, the fourth information mentioned above includes at least one function, which includes functions in the first function set and functions in the second function set that are added compared to the first function set.

[0285] For example, in one scenario, the first node enables the DU and MT1 functions. Then, the core network device sends fourth information configuring a fourth function set and the corresponding configuration status of the functions within that set. This fourth function set includes the DU, CU, and MT2 functions, with the DU, CU, and MT2 functions respectively displaying the statuses of "New Added," "New Added," and "New Added." Therefore, the functions configured by the first node will include: DU and MT1 functions, or DU, CU, and MT2 functions. In other words, the updated function set obtained by the first node includes dual DU, CU, MT1, and MT2 functions.

[0286] For example, in one instance, the first node enables the DU function and the MT1 function. Then, the core network device sends fourth information to configure the fourth function set and the configuration status of the functions in the fourth function set. The fourth function set includes the MT1 function and the CU function, and the states of the MT1 function and the CU function are respectively "released" and "newly added". Therefore, the functions configured by the first node include the DU function and the CU function. That is, the function set obtained after the first node is updated includes the DU function and the CU function.

[0287] For example, in one scenario, the first node enables the DU, CU, and MT2 functions. Then, the core network device sends fourth information configuring a fourth set of functions and the corresponding configuration states for those functions. This fourth set includes MT2, BAP, and CU functions. Specifically, the MT2 function's configuration state is "partially released" and can be configured as MT1 after adding BAP; the BAP function's configuration state is "newly added"; and the CU function's configuration state is "released." Therefore, the functions configured by the first node will include DU and MT1 functions; that is, the updated function set obtained by the first node includes both DU and MT1 functions.

[0288] For example, in one scenario, the first node is configured with CU, MT1, and MT2 functions. Then, the core network device sends fourth information configuring a fourth set of functions and the corresponding configuration states for the functions within that set. This fourth set includes DU, CU, and MT2 functions, with the DU function configured as "addition," the CU function as "release / delete," and the MT2 function as "Suspend / Inactive." Therefore, the functions configured by the first node will then include DU, MT1, and MT2. In other words, the updated function set obtained by the first node includes DU, MT1, and MT2, with the MT2 function in a "Suspend / Inactive" state.

[0289] Optionally, in this embodiment, the first node has a network-side unit function, and the first node is the source service node of the second node. The method further includes: when the second node switches from the first node to the third node in the network, the first node sends an indication information of a first function set to the third node; correspondingly, the third node configures the first function set.

[0290] Understandably, the aforementioned switch of the second node from the first node to the third node in the network means that the node connected to the second node changes from the first node to the third node. In other words, the node serving the second node changes from the first node to the third node.

[0291] In other words, in this implementation, the network-side units can interactively configure a set of functions.

[0292] Example, reference Figure 20 The network includes TN node 1, NTN node 1, and NTN node 2. TN node 1 is configured with DU and MT1 functions, and NTN node 1 is also configured with DU and MT1 functions. Therefore, NTN node 1 and TN node 1 are configured as IAB nodes. Figure 20 As shown, when the node connected to TN node 1 changes from NTN node 1 to NTN node 2, NTN node 1 can send an indication message to NTN node 2 to indicate that NTN node 1 has configured CU function + DU function. Correspondingly, after receiving the indication message, NTN node 2 configures CU function + DU function.

[0293] Optionally, the first node in this embodiment of the application has MT1 function and / or MT2 function, and the method further includes: when the first node switches from the fourth node to the fifth node in the network, receiving indication information of the third function set of the fifth node sent by the fifth node.

[0294] Similarly, when the first node switches from the fourth node to the fifth node in the network, it means that the node connected to the first node changes from the fourth node to the fifth node. In other words, the node serving the first node changes from the fourth node to the fifth node.

[0295] Example, reference Figure 21 The network includes TN node 1, NTN node 1, and NTN node 2. TN node 1 is configured with DU and MT1 functions, NTN node 1 is configured with DU and MT1 functions, and NTN node 2 is configured with CU, DU, and MT2 functions. That is, NTN node 1 and TN node 1 are configured as IAB nodes, and NTN node 2 is configured as a WAB node. Figure 21As shown in (a), when the node connected to TN node 1 changes from NTN node 1 to NTN node 2, NTN node 2 can send an indication message to TN node 1 to indicate that the function set configured by NTN node 2 includes CU function + DU function + MT2 function. Correspondingly, after receiving the indication message, NTN node 2 configures CU function + DU function + MT2 function.

[0296] The communication method of the embodiments of this application has been described in detail above. The following will be combined with… Figure 22 and Figure 23 The apparatus provided in the embodiments of this application is described in detail.

[0297] Figure 22 This is a structural schematic diagram of a communication device provided in an embodiment of this application. Specifically, as shown... Figure 22 As shown, the device 2200 includes: a receiving module 2201 and a processing module 2202.

[0298] For example, in an embodiment of the first device, device 2200 is applied to a first node. For example, the first node is a non-terrestrial network device or a terrestrial network device.

[0299] Specifically, the transceiver module 2201 is used to receive first information, which is used to configure a first set of functions of the first node. The first set of functions includes one or more of the following functions: network side unit function, MT1 function, and MT2 function. The MT1 function includes the MT function in the IAB node, and the MT2 function includes the MT function in the WAB node. The processing module 2202 is used to enable the functions in the first set of functions.

[0300] In one possible design, the network-side unit function can be any of the following: DU function, CU function, CU function, and DU function.

[0301] In one possible design, the first information is carried in the first message, and the first message also includes second information, which is used to indicate the effective time period associated with the first set of functions;

[0302] The processing module 2202 is specifically used to: enable the functions in the first set of functions during the effective time period.

[0303] In one possible design, the transceiver module 2201 is further configured to: send capability information to the core network equipment, the capability information indicating the set of functions requested by the first node, the requested set of functions being one or more of the following:

[0304] The DU function and MT1 function constitute a set of functions;

[0305] The functional set consisting of DU and CU functions;

[0306] The set of functions consisting of DU, CU, and MT2 functions;

[0307] A set of functions consisting of dual DU function, CU function, MT1 function, and MT2 function;

[0308] The function set consists of DU function, dual CU function and MT2 function;

[0309] The core network function consists of the CU function, DU function, core network function, and MT1 function.

[0310] In one possible design, the transceiver module 2201 is further configured to: receive third information from the core network device, the third information being used to indicate the triggering conditions for the first node to enable the functions in the first function set; the processing module 2202 is specifically configured to: enable the functions in the first function set when the triggering conditions are met.

[0311] In one possible design, the triggering conditions include one or more of the following: the elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

[0312] In one possible design, the transceiver module 2201 is also used to: receive fourth information from the core network device, the fourth information being used to indicate that the first function set is updated to the second function set.

[0313] In one possible design, the fourth information includes at least one function and the configuration state corresponding to each function. The configuration state is any one of the following: newly added, released or deleted, partial release of functions, function temporarily suspended and activated according to instructions, function temporarily suspended and activated or deleted after meeting conditions; wherein at least one function includes functions in the first function set and functions added to the second function set compared to the first function set.

[0314] In one possible design, the first node has network-side unit functionality and is the source service node for the second node. The transceiver module 2201 is also used to send instruction information of the first function set to the third node when the second node switches from the first node to the third node in the network.

[0315] In one possible design, the first node has MT1 and / or MT2 functions, and the transceiver module 2201 is also used to: receive indication information of the third function set of the fifth node sent by the fifth node when the first node switches from the fourth node to the fifth node in the network.

[0316] For example, in an embodiment of the second device, device 2200 is applied to a core network device.

[0317] Specifically, the transceiver module 2201 is used to: send first information to a first node in the network. The first information is used to configure a first set of functions of the first node. The first set of functions includes one or more of the following functions: network side unit function, MT1 function, and MT2 function. The MT1 function includes the MT function in the IAB node, and the MT2 function includes the MT function in the WAB node. The first node is a non-terrestrial network device or a terrestrial network device.

[0318] In one possible design, the network-side unit function can be any of the following: DU function, CU function, CU function, and DU function.

[0319] In one possible design, the first information is carried in a first message, which also includes second information used to indicate the valid time period associated with the first set of functions.

[0320] In one possible design, transceiver module 2201 is further configured to: receive capability information from the first node, the capability information indicating a set of functions requested by the first node, the requested set of functions being one or more of the following:

[0321] The DU function and MT1 function constitute a set of functions;

[0322] The functional set consisting of DU and CU functions;

[0323] The set of functions consisting of DU, CU, and MT2 functions;

[0324] A set of functions consisting of dual DU function, CU function, MT1 function, and MT2 function;

[0325] The function set consists of DU function, dual CU function and MT2 function;

[0326] The core network function consists of the CU function, DU function, core network function, and MT1 function.

[0327] In one possible design, the transceiver module 2201 is also used to: send third information to the first node, the third information being used to indicate the triggering conditions for the first node to enable the functions in the first function set.

[0328] In one possible design, the triggering conditions include one or more of the following: the elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

[0329] In one possible design, the transceiver module 2201 is further configured to: send a fourth message to the first node, the fourth message being used to instruct the first function set to be updated to the second function set.

[0330] In one possible design, the fourth information includes at least one function and the configuration state corresponding to each function. The configuration state is any one of the following: newly added, released or deleted, partial release of functions, function temporarily suspended and activated according to instructions, function temporarily suspended and activated or deleted after meeting conditions; wherein at least one function includes functions in the first function set and functions added to the second function set compared to the first function set.

[0331] Figure 23 This is a structural schematic diagram of another communication device provided in an embodiment of this application. Figure 23 The apparatus shown can be used to perform the method described in any of the foregoing embodiments.

[0332] like Figure 23 As shown, the device 2300 of this embodiment includes a memory 2301 and a processor 2302. In one implementation, the device 2300 further includes a communication interface 2303 and a bus 2304. The memory 2301, processor 2302, and communication interface 2303 are interconnected via the bus 2304.

[0333] The memory 2301 can be a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 2301 can store programs, and when the program stored in the memory 2301 is executed by the processor 2302, the processor 2302 uses it to execute... Figure 11 The steps of the method shown.

[0334] The processor 2302 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, used to execute relevant programs to implement the embodiments of this application. Figure 11 The method shown.

[0335] The processor 2302 can also be an integrated circuit chip with signal processing capabilities. In the implementation process, the embodiments of this application... Figure 11 Each step of the method can be accomplished through integrated logic circuits in the hardware of the processor 2302 or through instructions in software form.

[0336] The processor 2302 described above can also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or a conventional processor, etc.

[0337] The steps of the method disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 2301. Processor 2302 reads information from memory 2301 and, in conjunction with its hardware, completes the functions required by the units included in the device of this application. For example, it can execute... Figure 11 The various steps / functions of the illustrated embodiment.

[0338] The communication interface 2303 can use, but is not limited to, transceivers to enable communication between the device 2300 and other devices or communication networks.

[0339] Bus 2304 may include a pathway for transmitting information between various components of device 2300 (e.g., memory 2301, processor 2302, communication interface 2303).

[0340] It should be understood that the apparatus 2300 shown in the embodiments of this application can be deployed in network devices, such as the non-terrestrial network devices or terrestrial network devices described above. Alternatively, it can also be deployed in core network devices.

[0341] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be a usable medium accessible to a computer or a data storage device such as a server or data center containing one or more sets of usable media. The usable medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0342] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0343] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0344] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not limit the implementation process of the embodiments of this application.

[0345] 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 application.

[0346] Those skilled in the art will 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.

[0347] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0348] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0349] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0350] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

Claims

1. A communication method, characterized in that, The method is applied to the first node side of a network, which includes non-terrestrial network devices and / or terrestrial network devices, wherein the first node is either the non-terrestrial network device or the terrestrial network device, and the method includes: The first information is received from the core network device. The first information is used to configure the first function set of the first node. The first function set includes one or more of the following functions: network side unit function, MT1 function, and MT2 function. The MT1 function includes the function of accessing the mobile terminal MT in the integrated backhaul IAB node. The MT2 function includes the function of wireless accessing the MT in the wireless backhaul WAB node. Enable the functions in the first set of functions.

2. The method according to claim 1, characterized in that, The network-side unit function can be any one of the following: distributed unit (DU) function, centralized unit (CU) function, CU function, and the DU function.

3. The method according to claim 1 or 2, characterized in that, The first information is carried in the first message, and the first message also includes second information, which is used to indicate the valid time period associated with the first function set; Enabling the functions in the first set of functions includes: The functions in the first set of functions are activated during the effective time period.

4. The method according to claim 2 or 3, characterized in that, Before receiving the first information, the method further includes: The core network device sends capability information, which indicates the set of functions requested by the first node. The requested set of functions includes one or more of the following: The DU function and the MT1 function constitute a functional set; The DU function and the CU function constitute a functional set; The DU function, the CU function, and the MT2 function constitute a functional set; The functional set consisting of the dual DU function, the CU function, the MT1 function, and the MT2 function; The DU function, the dual CU function, and the MT2 function constitute a functional set; The CU function, DU function, core network function, and MT1 function constitute a functional set.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: Receive third information from the core network device, the third information being used to indicate the triggering conditions for the first node to enable the functions in the first function set; Enabling the functions in the first set of functions includes: When the triggering condition is met, the functions in the first set of functions are activated.

6. The method according to claim 5, characterized in that, The triggering conditions include one or more of the following: The elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: The system receives fourth information from the core network device, the fourth information being used to instruct the first function set to be updated to the second function set.

8. The method according to claim 7, characterized in that, The fourth information includes at least one function and the configuration status corresponding to each of the at least one function. The configuration status is any one of the following: newly added, released or deleted, some functions in the function are released, the function is temporarily suspended and activated according to the instruction, or the function is temporarily suspended and takes effect or is deleted after the conditions are met. The at least one function includes functions in the first function set and functions in the second function set that are added compared to the first function set.

9. The method according to any one of claims 1 to 6, characterized in that, The first node possesses the network-side unit function, and the first node is the source service node of the second node. The method further includes: When the second node switches from the first node to the third node in the network, it sends the indication information of the first set of functions to the third node.

10. The method according to any one of claims 1 to 6, characterized in that, The first node has the MT1 function and / or the MT2 function, and the method further includes: When the first node switches from the fourth node to the fifth node in the network, it receives indication information of the third function set of the fifth node sent by the fifth node.

11. A communication method, characterized in that, The method is applied to the core network equipment side of a network, which includes non-terrestrial network equipment and / or terrestrial network equipment, and includes: Send first information to a first node in the network. The first information is used to configure a first set of functions of the first node. The first set of functions includes one or more of the following functions: network side unit function, MT1 function, and MT2 function. The MT1 function includes the function of accessing the mobile terminal MT in the integrated backhaul IAB node. The MT2 function includes the function of wirelessly accessing the MT in the wireless backhaul WAB node. The first node is either the non-terrestrial network device or the terrestrial network device.

12. The method according to claim 11, characterized in that, The network-side unit function can be any one of the following: distributed unit (DU) function, centralized unit (CU) function, CU function, and the DU function.

13. The method according to claim 11 or 12, characterized in that, The first information is carried in a first message, and the first message also includes second information, which is used to indicate the valid time period associated with the first function set.

14. The method according to claim 12 or 13, characterized in that, Before sending the first information, the method further includes: Receive capability information from the first node, the capability information indicating the set of functions requested by the first node, the requested set of functions being one or more of the following: The DU function and the MT1 function constitute a functional set; The DU function and the CU function constitute a functional set; The DU function, the CU function, and the MT2 function constitute a functional set; The functional set consisting of the dual DU function, the CU function, the MT1 function, and the MT2 function; The DU function, the dual CU function, and the MT2 function constitute a functional set; The CU function, DU function, core network function, and MT1 function constitute a functional set.

15. The method according to any one of claims 11 to 14, characterized in that, The method further includes: Send a third message to the first node, the third message being used to indicate the triggering conditions for the first node to enable the functions in the first function set.

16. The method according to claim 15, characterized in that, The triggering conditions include one or more of the following: The elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

17. The method according to any one of claims 11 to 16, characterized in that, The method further includes: Send a fourth message to the first node, the fourth message being used to instruct the first function set to be updated to the second function set.

18. The method according to claim 17, characterized in that, The fourth information includes at least one function and the configuration status corresponding to each of the at least one function. The configuration status is any one of the following: newly added, released or deleted, some functions in the function are released, the function is temporarily suspended and activated according to the instruction, or the function is temporarily suspended and takes effect or is deleted after the conditions are met. The at least one function includes functions in the first function set and functions in the second function set that are added compared to the first function set.

19. A communication device, characterized in that, include: The transceiver module is used to receive first information, which is used to configure a first set of functions of the first node. The first set of functions includes one or more of the following functions: network side unit function, MT1 function, and MT2 function. The MT1 function includes the function of accessing the mobile terminal MT in the integrated backhaul IAB node, and the MT2 function includes the function of wirelessly accessing the MT in the wireless backhaul WAB node. The processing module is used to enable the functions in the first set of functions.

20. The apparatus according to claim 19, characterized in that, The network-side unit function can be any one of the following: distributed unit (DU) function, centralized unit (CU) function, CU function, and the DU function.

21. The apparatus according to claim 19 or 20, characterized in that, The first information is carried in the first message, and the first message also includes second information, which is used to indicate the valid time period associated with the first function set; The processing module is specifically used for: The functions in the first set of functions are activated during the effective time period.

22. The apparatus according to claim 20 or 21, characterized in that, The transceiver module is also used for: The core network device sends capability information, which indicates the set of functions requested by the first node. The requested set of functions includes one or more of the following: The DU function and the MT1 function constitute a functional set; The DU function and the CU function constitute a functional set; The DU function, the CU function, and the MT2 function constitute a functional set; The functional set consisting of the dual DU function, the CU function, the MT1 function, and the MT2 function; The DU function, the dual CU function, and the MT2 function constitute a functional set; The CU function, DU function, core network function, and MT1 function constitute a functional set.

23. The apparatus according to any one of claims 19 to 22, characterized in that, The transceiver module is also used for: Receive third information from the core network device, the third information being used to indicate the triggering conditions for the first node to enable the functions in the first function set; The processing module is specifically used for: When the triggering condition is met, the functions in the first set of functions are activated.

24. The apparatus according to claim 23, characterized in that, The triggering conditions include one or more of the following: The elevation angle between the first node and the reference position is greater than a preset threshold, the distance between the first node and the reference position is less than a preset threshold, the clock of the first node is within a preset time period, and the time delay between the first node and the reference node is less than a preset threshold.

25. The apparatus according to any one of claims 19 to 24, characterized in that, The transceiver module is also used for: The system receives fourth information from the core network device, the fourth information being used to instruct the first function set to be updated to the second function set.

26. The apparatus according to claim 25, characterized in that, The fourth information includes at least one function and the configuration status corresponding to each of the at least one function. The configuration status is any one of the following: newly added, released or deleted, some functions in the function are released, the function is temporarily suspended and activated according to the instruction, or the function is temporarily suspended and takes effect or is deleted after the conditions are met. The at least one function includes functions in the first function set and functions in the second function set that are added compared to the first function set.

27. The apparatus according to any one of claims 19 to 24, characterized in that, The first node possesses the network-side unit function, and the first node is the source service node of the second node. The transceiver module is further configured to: When the second node switches from the first node to the third node in the network, it sends the indication information of the first set of functions to the third node.

28. The apparatus according to any one of claims 19 to 24, characterized in that, The first node possesses the MT1 function and / or the MT2 function, and the transceiver module is further configured to: When the first node switches from the fourth node to the fifth node in the network, it receives indication information of the third function set of the fifth node sent by the fifth node.

29. A communication device, characterized in that, Includes a module for performing the method as described in any one of claims 11 to 18.

30. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a program or instructions that, when executed, cause the method as described in any one of claims 1 to 18 to be implemented.

31. A computer program product, characterized in that, The computer program product includes a computer program that, when run, causes the method as described in any one of claims 1 to 18 to be implemented.

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