Information transmission method and device

Abstract

The present disclosure provides an information transmission method and apparatus. The method includes the steps of receiving a first indication information, the first indication information indicating that the orbit of the first terminal device coincides with the orbit of the second terminal device, and transmitting a second indication information to the first terminal device, the second indication information indicating to change the orbit information reporting periodicity to a second periodicity, or the second indication information indicating to suspend the orbit information reporting. The second periodicity is greater than the first periodicity, and the first periodicity is the orbit information reporting periodicity before the first indication information is transmitted. The aforementioned method is implemented, whereby the access network device determines that the orbit of the first terminal device coincides with the orbit of the second terminal device based on the first indication information. In this case, the access network device may use the second indication information to indicate to the first terminal device to increase the orbit information reporting periodicity, so as to reduce the number of orbit information reports, avoid frequent orbit information reports performed by the first terminal device, save the electrical energy of the first terminal device, and reduce the occupation of air interface resources.

Description

[Technical Field]

[0001] The present disclosure relates to the field of communication technologies, and in particular to information transmission methods and apparatus. [Background technology]

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese Patent Application No. 202210071576.1, entitled "INFORMATION TRANSMISSION METHOD AND APPARATUS," filed with the State Intellectual Property Office of China on January 21, 2022, which is incorporated herein by reference in its entirety.

[0003] In wireless communication networks, for example, in fifth-generation (5G) communication systems, the services supported by the network are becoming increasingly diverse, resulting in increasingly diverse requirements that need to be met. For example, networks need to be capable of supporting ultra-high speeds, ultra-low latency, and / or extremely large connections. This characteristic makes network planning, network configuration, and / or resource scheduling increasingly complex. In addition, as networks become increasingly powerful, supporting new technologies such as increasingly higher spectrum, higher-order multiple-input multiple-output (MIMO) technology, and beamforming and / or beam management, network energy conservation has become a hot research topic. These new requirements, scenarios, and characteristics pose unprecedented challenges to network planning, operation and maintenance, and efficient operation. To address these challenges, artificial intelligence technologies may be introduced into wireless communication networks to implement network intelligence. Summary of the Invention

[0004] The present disclosure provides an information transmission method and apparatus for solving the problem of how to reduce frequent positioning and orbit data reporting performed by terminal devices.

[0005] According to a first aspect, the present disclosure provides an information transmission method. The method is executed by an access network device or a module in the access network device. In this specification, an example in which the access network device is the execution subject is used for description. The method includes: receiving, by the access network device, first indication information indicating that the orbit of a first terminal device matches the orbit of a second terminal device; and transmitting, to the first terminal device, second indication information indicating to change the orbit information reporting periodicity of the first terminal device from the first periodicity to the second periodicity, or to suspend the orbit information reporting. The second periodicity is greater than the first periodicity.

[0006] The above-mentioned method is implemented, whereby the access network device determines, based on the first indication information, that the trajectory of the first terminal device is consistent with the trajectory of the second terminal device. In this case, the access network device can use the second indication information to indicate to the first terminal device to increase the trajectory information reporting periodicity or suspend the trajectory information reporting, thereby reducing the number of trajectory information reports, avoiding frequent trajectory information reports performed by the first terminal device, saving the electrical energy of the first terminal device, and reducing the occupation of air interface resources.

[0007] In a possible embodiment, the first periodicity is the orbit information reporting periodicity of the first terminal device before the first indication information is transmitted.

[0008] In a possible implementation, receiving the first indication information includes receiving the first indication information from the first terminal device. Optionally, the first indication information specifically indicates second identification information of the second terminal device.

[0009] The second identification information is indicated by using the first indication information, thereby enabling the access network device to accurately determine a terminal device having a trajectory that matches the trajectory of the first terminal device by using less signaling overhead.

[0010] In a possible embodiment, the second identification information includes at least one of a second cell identifier of the second terminal device and a second cell radio network temporary identifier of the second terminal device. The second cell identifier can be understood as an identifier of a cell in which the second terminal device is located. The second cell radio network temporary identifier can be understood as a radio network temporary identifier of the second terminal device.

[0011] In a possible embodiment, the first indication information indicates that a trajectory of one or more terminal devices matches a trajectory of a second terminal device, and the one or more terminal devices include the first terminal device.

[0012] A plurality of terminal devices are indicated by using the first indication information to reduce signaling overhead and improve utilization of system resources.

[0013] In a possible embodiment, receiving the first indication information includes receiving the first indication information from the second terminal device, the first indication information specifically indicating identification information of one or more terminal devices.

[0014] In a possible embodiment, the method further comprises determining trajectory information of the first terminal device based on trajectory information of the second terminal device.

[0015] According to this method, when the trajectory of the first terminal device coincides with the trajectory of the second terminal device, the trajectory information of the first terminal device can be accurately determined without obtaining the trajectory information of the first terminal device.

[0016] In a possible embodiment, trajectory information of one or more terminal devices is determined based on trajectory information of a second terminal device.

[0017] According to this method, when the trajectories of one or more terminal devices coincide with the trajectory of a second terminal device, the trajectory information of one or more terminal devices can be accurately determined without obtaining the trajectory information of the one or more terminal devices.

[0018] In a possible embodiment, the method further includes receiving third indication information, the third indication information indicating that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device.

[0019] In a possible embodiment, the third indication information is from the first terminal device or the second terminal device.

[0020] In a possible embodiment, the third indication information specifically indicates that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device, indicates that the first terminal device should be removed from the device list, or indicates an updated device list, where the updated device list does not include the first terminal device.

[0021] In a possible embodiment, fourth indication information is sent to the first terminal device, the fourth indication information indicating to change the orbit information reporting periodicity of the first terminal device from the second periodicity to a third periodicity, or the fourth indication information indicating to the first terminal device to enable orbit information reporting, the third periodicity being smaller than the second periodicity.

[0022] According to this method, when the trajectory of the first terminal device does not match the trajectory of the second terminal device, the trajectory information of the first terminal device can be obtained in a timely manner by using the fourth indication information.

[0023] According to a second aspect, the present disclosure provides an information transmission method. The method is executed by a terminal device or a module in the terminal device. In this specification, an example in which a first terminal device is the execution subject is used for description. The method includes: the first terminal device obtaining second orbit information of a second terminal device; and transmitting first indication information when the second orbit information matches the first orbit information of the first terminal device, the first indication information indicating that the orbit of the first terminal device matches the orbit of the second terminal device; and determining to change or suspend orbit information reporting periodicity to the second periodicity or suspending orbit information reporting, the second periodicity being greater than the first periodicity, and the first periodicity being the orbit information reporting periodicity before the first indication information is transmitted.

[0024] The above-mentioned method is implemented, whereby the first terminal device can determine that the orbit of the first terminal device is consistent with the orbit of the second terminal device, increase the orbit information reporting periodicity to reduce the number of orbit information reports, avoid frequent orbit information reports performed by the first terminal device, save the electrical energy of the first terminal device, and reduce the occupation of air interface resources.

[0025] In a possible embodiment, deciding to change the orbit information reporting periodicity to the second periodicity or suspending the orbit information reporting includes receiving second indication information from the access network device, wherein the second indication information indicates to change the orbit information reporting periodicity of the first terminal device to the second periodicity or the second indication information indicates to suspend the orbit information reporting.

[0026] In a possible embodiment, transmitting the first indication information includes transmitting first indication information to the access network device, the first indication information specifically indicating second identification information of the second terminal device.

[0027] In a possible embodiment, the second identification information includes at least one of a second cell identifier of the second terminal device and a second cell radio network temporary identifier of the second terminal device.

[0028] In a possible embodiment, transmitting the first indication information includes transmitting first indication information to the second terminal device, the first indication information specifically indicating first identification information of the first terminal device.

[0029] In a possible embodiment, the first identification information includes at least one of a first cell identifier of the first terminal device and a first cell radio network temporary identifier of the first terminal device.

[0030] In a possible embodiment, obtaining the second trajectory information of the second terminal device includes obtaining the second trajectory information of the second terminal device via a sidelink.

[0031] In a possible embodiment, the second trajectory information includes one or more pieces of second positioning information, and the second positioning information includes at least one of the following information: time information corresponding to the second positioning information, speed information of the second terminal device, movement direction information of the second terminal device, location information of the second terminal device, a second cell identifier of the second terminal device, or a second cell radio network temporary identifier of the second terminal device.

[0032] In a possible embodiment, the first trajectory information includes one or more first positioning information, and the first positioning information includes at least one of the following information: time information corresponding to the first positioning information, speed information of the first terminal device, movement direction information of the first terminal device, or location information of the first terminal device.

[0033] In a possible embodiment, the method further includes transmitting third indication information when the second trajectory information no longer matches the first trajectory information of the first terminal device, the third indication information indicating that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device.

[0034] In a possible embodiment, the method further includes receiving fourth indication information from the access network device, the fourth indication information indicating to change the orbit information reporting periodicity to a third periodicity, the third periodicity being less than the second periodicity.

[0035] According to a third aspect, the present disclosure provides an information transmission method. The method is performed by a terminal device or a module in the terminal device. In this specification, an example in which a second terminal device is the execution subject is used for description. The method includes: the second terminal device determining first indication information; and transmitting the first indication information to an access network device, where the first indication information indicates that a trajectory of the first terminal device matches a trajectory of the second terminal device.

[0036] In a possible embodiment, before the first indication information is determined, the method further includes receiving fifth indication information from the first terminal device, the fifth indication information indicating that the trajectory of the first terminal device matches the trajectory of the second terminal device.

[0037] In a possible embodiment, the first indication information indicates that a trajectory of one or more terminal devices matches a trajectory of a second terminal device, and the one or more terminal devices include the first terminal device.

[0038] In a possible embodiment, the method further includes adding the first terminal device to the first list based on the first indication information.

[0039] In a possible embodiment, the method further includes transmitting second trajectory information of the second terminal device via a sidelink.

[0040] In a possible embodiment, the second trajectory information includes one or more pieces of second positioning information, and the second positioning information includes at least one of the following information: time information corresponding to the second positioning information, speed information of the second terminal device, movement direction information of the second terminal device, location information of the second terminal device, a second cell identifier of the second terminal device, or a second cell radio network temporary identifier of the second terminal device.

[0041] In a possible embodiment, the method further includes receiving third indication information, the third indication information indicating that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device.

[0042] In a possible embodiment, the method further includes transmitting third indication information to the access network device, or transmitting sixth indication information to the access network device, the sixth indication information indicating that the trajectory of the at least one terminal device no longer matches the trajectory of the second terminal device, the at least one terminal device including the first terminal device.

[0043] According to a fourth aspect, the present application provides an information transmission method. The method is executed by an access network device or a module in the access network device. In this specification, an example in which a first access network device is the execution subject is used for description. The method includes: the first access network device obtaining first orbit information of a first terminal device and second orbit information of a second terminal device; and, if the second orbit information matches the first orbit information, transmitting second indication information to the first terminal device, where the second indication information indicates changing an orbit information reporting periodicity to a second periodicity, the second periodicity being greater than the first periodicity, and the first periodicity being the orbit information reporting periodicity before the first indication information is transmitted.

[0044] The above-mentioned method is implemented, whereby the first access network device determines that the orbit of the first terminal device is consistent with the orbit of the second terminal device. In this case, the first access network device can use the second indication information to indicate to the first terminal device to increase the orbit information reporting periodicity, thereby reducing the number of orbit information reports, avoiding frequent orbit information reports performed by the first terminal device, saving the electrical energy of the first terminal device, and reducing the occupation of air interface resources.

[0045] In a possible embodiment, the method further includes adding a first terminal device to a first list, the first list including one or more terminal devices, the trajectory of the one or more terminal devices matching the trajectory of the second terminal device.

[0046] In a possible embodiment, the method further comprises determining trajectory information of the first terminal device based on trajectory information of the second terminal device.

[0047] In a possible embodiment, the method further includes transmitting fourth indication information to the first terminal device when the first orbit information no longer matches the second orbit information, the fourth indication information indicating to change the orbit information reporting periodicity to a third periodicity, the third periodicity being smaller than the second periodicity.

[0048] In a possible embodiment, the method further includes removing a first terminal device from a first list, the first list including one or more terminal devices, and the trajectory of the one or more terminal devices matching the trajectory of the second terminal device.

[0049] In a possible embodiment, the method further includes transmitting seventh indication information to the second access network device when it is determined that the second terminal device will be handed over to a cell managed by the second access network device, the seventh indication information indicating that the trajectories of the one or more terminal devices match the trajectory of the second terminal device, and the one or more terminal devices include the first terminal device.

[0050] In a possible embodiment, the target cell to which one or more terminal devices are handed over and the target cell to which the second terminal device is handed over belong to the same access network device.

[0051] In a possible embodiment, the first trajectory information includes one or more first positioning information, and the first positioning information includes at least one of the following information: time information corresponding to the first positioning information, speed information of the first terminal device, movement direction information of the first terminal device, or location information of the first terminal device.

[0052] In a possible embodiment, the second trajectory information includes one or more second positioning information, and the second positioning information includes at least one of the following information: time information corresponding to the second positioning information, speed information of the second terminal device, movement direction information of the second terminal device, or location information of the second terminal device.

[0053] According to a fifth aspect, the present application further provides a communication device. The communication device is capable of implementing any of the methods or embodiments provided in the first or fourth aspects. The communication device may be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software may include one or more units or modules corresponding to the aforementioned functions.

[0054] In a possible embodiment, the communication device includes a processor configured to support the communication device in performing the method set forth in the first or fourth aspect. The communication device may further include a memory. The memory may be coupled to the processor, and the memory stores program instructions and data required by the communication device. Optionally, the communication device further includes an interface circuit configured to support the communication device in communicating with another communication device.

[0055] In a possible embodiment, the structure of the communication device includes a processing unit and a communication unit. These units can perform the corresponding functions in the above-mentioned method examples. For details, please refer to the description in the first aspect or the fourth aspect. The details will not be described again in this specification.

[0056] According to a sixth aspect, the present application further provides a communication device. The communication device is capable of implementing any of the methods or embodiments provided in the second or third aspects. The communication device may be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software may include one or more units or modules corresponding to the aforementioned functions.

[0057] In a possible embodiment, the communication device includes a processor configured to support the communication device in performing the method set forth in the second or third aspect. The communication device may further include a memory. The memory may be coupled to the processor, and the memory stores program instructions and data required by the communication device. Optionally, the communication device further includes an interface circuit configured to support the communication device in communicating with another communication device.

[0058] In a possible embodiment, the structure of the communication device includes a processing unit and a communication unit. These units can perform the corresponding functions in the above-mentioned method examples. For details, please refer to the description in the method provided in the second aspect or the third aspect. The details will not be described again in this specification.

[0059] According to a seventh aspect, there is provided a communications device including a processor and an interface circuit. The interface circuit is configured to receive a signal from a communications device other than the communications device and transmit the signal to the processor, or transmit a signal from the processor to a communications device other than the communications device. The processor is configured to execute a computer program or instructions stored in a memory to perform the method of any possible implementation of the first or fourth aspect, or the method of any possible implementation of the second or third aspect. Optionally, the device further includes a memory, the memory storing the computer program or instructions.

[0060] According to an eighth aspect, there is provided a computer readable storage medium having stored thereon a computer program or instructions which, when executed on a computer, enable the computer to perform the method of any possible implementation of the first or fourth aspect, or enable the computer to perform the method of any possible implementation of the second or third aspect.

[0061] According to a ninth aspect, there is provided a computer program product comprising computer readable instructions which, when executed on a computer, enable the computer to perform the method of any possible implementation of the first or fourth aspect, or enable the computer to perform the method of any possible implementation of the second or third aspect.

[0062] According to a tenth aspect, there is provided a chip, the chip including a processor and may further include a memory, the processor being coupled to the memory and configured to execute computer programs or instructions stored in the memory to enable the chip to perform the method of any possible implementation of the first or fourth aspect, or to enable the chip to perform the method of any possible implementation of the second or third aspect.

[0063] According to an eleventh aspect, there is provided a communication system, the system including an apparatus (such as an access network device) for performing the method of the first aspect, an apparatus (such as a first terminal device) for performing the method of the second aspect, and an apparatus (such as a second terminal device) for performing the method of the third aspect, or the system including an apparatus (such as an access network device) for performing the method of the fourth aspect, an apparatus (such as a first terminal device) for performing the method of the second aspect, and an apparatus (such as a second terminal device) for performing the method of the third aspect. [Brief explanation of the drawings]

[0064] [Figure 1] FIG. 1 is a diagram of a network architecture applicable to the present disclosure. [Figure 2] FIG. 1 is a diagram of the overall architecture of an NG-RAN according to the present disclosure. [Figure 3] FIG. 1 is an exemplary diagram of an application framework of AI in wireless communication systems. [Figure 4] 1 is a schematic flowchart of an information transmission method according to the present disclosure. [Figure 5] FIG. 1 is a diagram of a DRX cycle according to the present disclosure. [Figure 6] 1 is a schematic flowchart of an information transmission method according to the present disclosure. [Figure 7] 1 is a schematic flowchart of an information transmission method according to the present disclosure. [Figure 8] 1 is a diagram of the structure of a communication device according to the present disclosure. [Figure 9] 1 is a diagram of the structure of a communication device according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0065] Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings herein.

[0066] The present disclosure may be applied to various mobile communication systems, such as 5G new radio (NR) systems, long term evolution (LTE) systems, future communication systems, and other communication systems, without being particularly limited herein.

[0067] In this disclosure, a terminal device may also be referred to as user equipment (UE). One possible type of UE is vehicle user equipment (V-UE). The UE is a device with wireless transceiver functionality, or a chip that can be disposed in the device, and may support at least one mobile communication system. In practical applications, the terminal device in the embodiments of the present disclosure may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver functionality, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Application scenarios are not limited in the embodiments of the present disclosure.The terminal device in the present disclosure may be widely used in communication in various scenarios, including, but not limited to, at least one of scenarios such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), device-to-device (D2D), vehicle-to-everything (V2X), machine-type communication (MTC), massive machine-type communication (mMTC), internet of things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. The specific technology and specific device form used by the terminal are not limited in the present disclosure.

[0068] In this disclosure, V2X includes vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), vehicle-to-infrastructure (V2I), and vehicle-to-network (V2N). In possible implementations, direct communication between terminal devices may be used as part of a V2X work item. Direct communication between terminal devices is also referred to as sidelink communication. NR sidelink supports three basic transmission scenarios: unicast, groupcast, and broadcast. Unicast sidelink transmissions are intended for a specific receiving terminal device, groupcast sidelink transmissions are intended for a group of specific receiving terminal devices, and broadcast sidelink transmissions are intended for any terminal device within transmission range.

[0069] In this disclosure, an access network device may also be referred to as a radio access network (RAN) device, and may be a radio access device or a base station under various standards. For example, the access network device may be a base station, a NodeB, an evolved NodeB (eNodeB or eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in a fifth generation (5G) mobile communication system, an access network device or a related module in an open radio access network (O-RAN or open RAN), a next generation NodeB in a sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a wireless fidelity (Wi-Fi) system, or may be a module or unit that performs some of the functions of the aforementioned base station, such as a central unit (CU), a distributed unit (DU), a central unit control plane (CU-CP) module, or a central unit user plane (CU-UP) module. The access network device may be a macro base station, a micro base station or an indoor station, or may be a relay node, a donor node, etc. The specific technology used by the access network device and the specific device form are not limited in this disclosure.

[0070] FIG. 1 is a diagram of a network architecture applicable to the present disclosure. In FIG. 1, a 5G core network (CN) is connected to a next generation radio access network (NG-RAN) through an NG interface. The NG-RAN includes one or more gNBs, which are connected to each other through an Xn interface. Optionally, one or more gNBs in the NG-RAN may use a distributed architecture. Specifically, the CU and DU of the gNB are separated. The gNB includes one or more distributed units (DUs) and one central unit (CU). The CU and DU are connected through an F1 interface. In an actual network deployment, the DU and CU may be centrally located in the same geographical location or separately located in different geographical locations. Optionally, one or more gNBs in the NG-RAN may be an integrated gNB. Specifically, the CU and DU of the gNB are not separated.

[0071] In the present disclosure, the functions of the CU and DU may be divided based on a protocol stack. In a possible manner, the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and the packet data convergence protocol (PDCP) layer may be located on the CU, and the remaining radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer may be located on the DU. The CU and DU are connected through an F1 interface. The CU may correspond to a gNB connected to a core network through an NG interface. The CU may correspond to a gNB connected to another gNB through an Xn interface. The CU may correspond to a gNB performing dual connectivity operation by connecting to another evolved NodeB (eNB) through an X2 interface. It may be understood that the above functional division is merely an example and does not constitute a limitation on the CU and DU. In other words, there may be other functional division patterns between the CU and DU. In this disclosure, details will not be described herein.

[0072] Furthermore, the functions of the CU may be implemented by a single entity or by separate entities. For example, the functions of the CU may be further divided. For example, the control plane (CP) may be separated from the user plane (UP). Specifically, the CU's control plane (CU-CP) may be separated from the CU's user plane (CU-UP). For example, the CU-CP and the CU-UP may be implemented by separate functional entities. The CU-CP and the CU-UP may be coupled to the DU and jointly implement base station functions. In one possible implementation, the CU-CP is responsible for control plane functions, which mainly include RRC functions and PDCP (i.e., PDCP-C) functions corresponding to the control plane. The PDCP-C is mainly responsible for encryption and decryption of control plane data, integrity protection, data transmission, etc. The CU-UP is responsible for user plane functions, which mainly include SDAP functions and PDCP (i.e., PDCP-U) functions corresponding to the user plane. The SDAP is mainly responsible for processing data in the core network and mapping data flows to bearers. The PDCP-U is mainly responsible for data plane encryption and decryption, integrity protection, header compression, sequence number preservation, data transmission, etc. The CU-CP and CU-UP are connected through an E1 interface. The CU-CP may correspond to a gNB connected to the core network through an NG interface. The CU-CP is connected to the DU by using F1-C (control plane). The CU-UP is connected to the DU by using F1-U (user plane). Indeed, another possible embodiment is that the PDCP-C is also on the CU-UP.

[0073] Optionally, the radio unit (RU) of the DU may be located remotely. The RU may have radio frequency functions. The DU and RU may be separated by a physical layer (PHY). For example, the DU may perform higher layer functions of the PHY layer, and the RU may perform lower layer functions of the PHY layer. When used for transmission, the PHY layer functions may include at least one of cyclic redundancy check (CRC) code addition, channel coding, rate matching, scrambling, modulation, layer mapping, precoding, resource mapping, physical antenna mapping, or radio frequency transmission functions. When used for reception, the PHY layer functions may include at least one of CRC check, channel decoding, rate dematching, descrambling, demodulation, delayer mapping, channel detection, resource demapping, physical antenna demapping, or radio frequency reception functions. The higher layer functions of the PHY layer may include a portion of the PHY layer functions. For example, that portion of the functions is closer to the MAC layer. The lower layer functions of the PHY layer may include other parts of the functions of the PHY layer. For example, the other parts of the functions are closer to radio frequency functions. For example, the higher layer functions of the PHY layer may include CRC code addition, channel coding, rate matching, scrambling, modulation, and layer mapping, and the lower layer functions of the PHY layer may include precoding, resource mapping, physical antenna mapping, and radio frequency transmission functions. Alternatively, the higher layer functions of the PHY layer may include CRC code addition, channel coding, rate matching, scrambling, modulation, layer mapping, and precoding, and the lower layer functions of the PHY layer may include resource mapping, physical antenna mapping, and radio frequency transmission functions.For example, the higher layer functions of the PHY layer may include CRC checking, channel decoding, rate de-matching, decoding, demodulation, and de-layer mapping, and the lower layer functions of the PHY layer may include channel detection, resource demapping, physical antenna demapping, and radio frequency reception functions. Alternatively, the higher layer functions of the PHY layer may include CRC checking, channel decoding, rate de-matching, decoding, demodulation, de-layer mapping, and channel detection, and the lower layer functions of the PHY layer may include resource demapping, physical antenna demapping, and radio frequency reception functions.

[0074] Optionally, any one of the DU, CU, CU-CP, CU-UP, and RU may be a software module, a hardware structure, or a software module and a hardware structure. This is not limited. The existence forms of various entities may vary and are not limited. For example, the DU, CU, CU-CP, and CU-UP are software modules, and the RU is a hardware structure. These modules and the methods performed by these modules also fall within the scope of protection of the present disclosure.

[0075] Figure 2 is a diagram of the overall architecture of an NG-RAN according to the present disclosure. This architecture includes two types of base stations: gNB in ​​5G and next generation evolved NodeB (ng-eNB) in 4G systems. For ease of description, gNB and ng-eNB are hereafter uniformly referred to as gNB. The gNBs are connected to each other through an Xn interface. The gNBs are connected to a 5G core network (5G core, 5GC) through an NG interface. The 5GC may further include network elements such as an access and mobility management function (AMF) and a user plane function (UPF).

[0076] In a possible embodiment, artificial intelligence (AI) technology may be introduced into a wireless communication system to implement an intelligent network. Artificial intelligence is a technology that simulates the human brain to perform complex calculations. With the improvement of data storage and computing power, AI is becoming more widely used. For example, AI is used in NR to intelligently collect and analyze data to improve network performance and user experience. FIG. 3 is an exemplary diagram of an application framework of AI in a wireless communication system. In FIG. 3, a data source is used to store training data and inference data. A model training node analyzes or trains training data provided by a data source to obtain an AI model, and then places the AI ​​model on a model inference node. The AI ​​model represents a mapping relationship between the input and output of the model. The AI ​​model is obtained through learning by using the model training node. This is equivalent to the model training node obtaining the mapping relationship between the input and output of the model through learning using the training data. The model inference node uses the AI ​​model to perform inference based on inference data provided by a data source to obtain an inference result. The method may be further described as follows: The model inference node inputs inference data to an AI model and obtains an output by using the AI ​​model, where the output is an inference result. The inference result may indicate configuration parameters used (executed) by an execution object and / or operations performed by the execution object. The inference result may be uniformly planned by an actor entity and sent to one or more execution objects (e.g., network elements) for execution. Optionally, the model training node may further update the AI ​​model located on the model inference node.The model inference node may feed back information related to the deployed model to the model training node, which then performs optimization, updates, etc. on the deployed AI model. Optionally, the execution object may feed back network parameters collected by the execution object to a data source. This process is sometimes called performance feedback, and the fed back network parameters may be used as training data or inference data.

[0077] In the present disclosure, the application framework shown in FIG. 3 may be located on the gNB, gNB-CU, or gNB-DU in FIG. 1 or FIG. 2. Alternatively, the application framework shown in FIG. 3 may be located on another device, such as an operation, administration, and maintenance (OAM) device in an access network device, an access network intelligent controller (RAN intelligent controller, RIC) module, etc. This is not limited in the present disclosure. An access network device in NR may support multiple AI-assisted application scenarios. These AI-assisted application scenarios may require some input data for analysis or training. For example, a mobility enhancement scenario is used as an example. To predict a target cell for a terminal, an access network device requires the terminal device to periodically report its trajectory information as input data. However, frequent trajectory information reporting performed by a terminal device causes a large amount of power consumption and air interface resource occupation. Therefore, the present disclosure provides a method for reducing frequent trajectory information reporting performed by a terminal device, thereby reducing power consumption and air interface resource occupation.

[0078] It may be understood that the trajectory information of the terminal device in the present disclosure is trajectory information approved by the user and / or trajectory information obtained after confidential information has been filtered.

[0079] In this disclosure, when "less than" or "greater than" are used for comparison, "less than" can also be replaced with "less than or equal to," and "greater than" can also be replaced with "greater than or equal to," and vice versa.

[0080] In the examples of the present disclosure, unless otherwise specified or there is no logical contradiction, the terms and / or descriptions in different examples are consistent and may be cross-referenced, and the technical features in different examples may be combined based on their internal logical relationships to form new examples.

[0081] It can be understood that the various numbers in the examples of the present disclosure are merely for distinguishing purposes to facilitate description, and are not intended to limit the scope of the examples of the present disclosure. The sequence numbers of the above processes do not imply an execution sequence, and the execution sequence of those processes should be determined based on the functions and internal logic of those processes.

[0082] Additionally, in this disclosure, the word "example" is used to mean serving as an example, illustration, or description. Any embodiment or design scheme described in this disclosure as an "example" should not be described as more preferred or having more advantages than another embodiment or design scheme. Strictly speaking, the word "example" is used to present concepts in a concrete manner.

[0083] The network architectures and service scenarios described in this disclosure are intended to more clearly describe the technical solutions in this disclosure, but do not constitute limitations on the technical solutions provided in this disclosure. With the evolution of network architectures and the emergence of new service scenarios, those skilled in the art may know that the technical solutions provided in this disclosure can also be applied to similar technical problems.

[0084] The present disclosure is described by using interactions between a first terminal device, a second terminal device, and an access network device as an example. The first terminal device may be a mobile terminal such as a mobile phone, the second terminal device may be a V-UE such as an intelligent vehicle, and the access network device may be a gNB in ​​5G (or a module implementing the functions of a gNB, such as a CU, CU-CP, CU-UP, and / or DU), an access network device in O-RAN (or an access network device in O-RAN, for example, a module implementing the functions of a CU, CU-CP, CU-UP, and / or DU), etc. Optionally, the first terminal device and the second terminal device may be other types of terminal devices. This is not limited.

[0085] In a mobile communication system, for example, in 5G, an access network device may support multiple cases assisted by artificial intelligence, such as mobility enhancement, load balancing, and network energy saving. In all three cases, the terminal device needs to report trajectory information as input for an artificial intelligence prediction model. The mobility enhancement scenario is used as an example. For a terminal device requiring mobility enhancement services, the access network device may periodically report the trajectory information of the terminal device, predict the future trajectory of the artificial intelligence based on past trajectory information and currently reported trajectory information, and infer a cell handover solution based on information such as the predicted trajectory, measurement reports, and cell load status. Optionally, when implementing artificial intelligence technology, the access network device may implement the artificial intelligence technology by introducing an AI module into at least one of the access network device, CU, CU-CP, CU-UP, or DU.

[0086] However, the frequent positioning and orbit data reporting performed by the terminal device causes a large amount of power consumption and occupation of air interface resources.

[0087] FIG. 4 is a schematic flow chart of an information transmission method according to the present disclosure.

[0088] In this method procedure, a first terminal device may obtain orbit information of a second terminal device and determine whether the orbit information of the second terminal device matches the orbit information of the first terminal device. If the orbit information of the second terminal device matches the orbit information of the first terminal device, the first terminal device may indicate to the access network device that the orbit of the first terminal device matches the orbit of the second terminal device. The access network device may determine the orbit information of the first terminal device based on the orbit information of the second terminal device. In this case, the access network device may indicate to the first terminal device to increase the orbit information reporting periodicity, reduce the number of orbit information reports, or suspend orbit information reporting. A specific procedure includes the following steps:

[0089] S401: An access network device sends a first trajectory request message to a first terminal device.

[0090] The first orbit request message may indicate the orbit information reporting periodicity. For ease of description, the orbit information reporting periodicity in S401 may be abbreviated as the first periodicity.

[0091] Optionally, the first orbit request message may further include information such as positioning periodicity, which is the periodicity at which the first terminal device performs positioning.

[0092] In the present disclosure, the orbit information reported by the first terminal device may be referred to as first orbit information, and the first orbit information may be a set of one or more first positioning information of the first terminal device. The first orbit information may include one or more first positioning information at an orbit information reporting periodicity. For example, the first terminal device performs positioning 100 times at one orbit information reporting periodicity to obtain 100 pieces of first positioning information. In this case, the first orbit information reported by the first terminal device at one orbit information reporting periodicity includes 100 pieces of positioning information.

[0093] The first positioning information of the first terminal device is: The first positioning information may include at least one of time information, speed information of the first terminal device, moving direction information of the first terminal device, or location information of the first terminal device. The location information may include the longitude and latitude of the first terminal device.

[0094] For example, if the positioning periodicity is 10 milliseconds and the orbit information reporting periodicity is 1 second, the first terminal device performs positioning once every 10 milliseconds to obtain one piece of first positioning information. For example, one piece of first positioning information may include time information of the current positioning (for example, the time information is 10:10:10, 200 milliseconds, 2021), speed information of the first terminal device during positioning (for example, the speed information is 1.2 meters per second), movement direction information of the first terminal device during positioning (for example, the movement direction information is due west), or location information of the first terminal device during positioning (for example, the location information is the longitude and latitude coordinates of the first terminal device). The first terminal device reports the first orbit information every second, and the first orbit information reported each time includes 100 pieces of first positioning information.

[0095] S402: The first terminal device reports first trajectory information to the access network device.

[0096] The first terminal device may periodically report the first orbit information to the access network device based on the first periodicity in the first orbit request message. The specific reporting process is not limited in the present disclosure and will not be described in detail herein.

[0097] S401 and S402 are optional operations. Specifically, before S403, the first terminal device may not start reporting the first orbit information to the access network device. Alternatively, S401 is optional. For example, the positioning periodicity and the first periodicity may be agreed upon in a protocol and do not need to be indicated by the access network device to the first terminal device by using signaling.

[0098] S403: The second terminal device transmits second trajectory information.

[0099] Specifically, the second terminal device may periodically broadcast the second trajectory information over the sidelink. When broadcasting the second trajectory information over the sidelink, the second terminal device may broadcast the second trajectory information by using sidelink resources over the PC5 interface.

[0100] The second terminal device may continue to periodically broadcast the second trajectory information via the sidelink, or may broadcast the second trajectory information intermittently. For example, in a possible embodiment, the second terminal device may broadcast its second trajectory information only when it reaches near a specific location or in a specific case, and not broadcast the second trajectory information at another time period or in another case. For example, the second terminal device is an intelligent vehicle, and the second terminal device broadcasts the second trajectory information at a specified distance from a station where the second terminal device needs to park (e.g., within 200 meters of the station). In another case, the second terminal device does not broadcast the second trajectory information. As another example, the second terminal device may broadcast the second trajectory information when it is traveling on a specified route between two stations where it needs to park. The second terminal device does not broadcast the second trajectory information when it is traveling on a different route.

[0101] In another possible embodiment, the second terminal device broadcasts the second trajectory information based on a period T1 when it reaches a specific location. In another case, the second terminal device broadcasts the second trajectory information based on a period T2, or does not broadcast the second trajectory information. T1 may be smaller than T2. ​​For example, the second terminal device is an intelligent vehicle, and the second terminal device broadcasts the second trajectory information every 0.5 seconds within a specified distance from a station where the second terminal device needs to park. In another case, the second terminal device broadcasts the second trajectory information every 5 seconds. As another example, the second terminal device may broadcast the second trajectory information every 0.5 seconds when traveling on a specified route between two stations where the second terminal device needs to park. The second terminal device broadcasts the second trajectory information every 5 seconds when traveling on a different route.

[0102] In another possible embodiment, after the speed of the second terminal device exceeds a specified threshold (e.g., 10 kilometers per hour (km / h)) and the second terminal device travels at that speed for more than a certain duration (e.g., 30 seconds), the broadcast periodicity of the second orbit information may be increased or the orbit broadcasting function may be disabled, i.e., the broadcasting of the second orbit information is suspended.

[0103] According to the above method, the energy consumption caused by broadcasting the second trajectory information can be reduced, and the occupation of sidelink resources can also be reduced.

[0104] In the present disclosure, the second trajectory information includes one or more second positioning information, and the second positioning information may include at least one of the following information: time information corresponding to the second positioning information, speed information of the second terminal device, moving direction information of the second terminal device, location information of the second terminal device, a second cell identifier of the second terminal device, or a second cell radio network temporary identifier (C-RNTI) of the second terminal device.

[0105] In the present disclosure, the second trajectory information may be carried on a data radio bearer (DRB) or may be carried on a signaling radio bearer (SRB).

[0106] In the present disclosure, the transmission resources used by the second terminal device to transmit the second trajectory information may be allocated to the second terminal device by the access network device or obtained by the second terminal device through resource recognition. For example, the access network device may configure a grant for sidelink transmission resources for the second terminal device by using RRC signaling, where the sidelink transmission resources include at least one of periodicity, time offset, frequency offset, etc. Alternatively, the second terminal device may recognize an available sidelink transmission resource set, select resources for data transmission, and notify another terminal device of resource reservation information. The specific content of the sidelink transmission resource allocation manner is not limited in the present disclosure and will not be described in detail herein.

[0107] S404: The first terminal device obtains second trajectory information of the second terminal device, and determines whether the second trajectory information matches the first trajectory information.

[0108] When the second terminal device broadcasts the second orbit information via the sidelink, the first terminal device may obtain the second orbit information through monitoring. In a possible embodiment, the first terminal device may perform monitoring in a discontinuous reception (DRX) mode to reduce the power consumption of the first terminal device. As shown in FIG. 5, a DRX cycle may include two parts: an on duration and an opportunity for DRX. During the "on duration," the first terminal device is in an awake state and monitors the presence of information broadcast by another terminal device. During the "opportunity for DRX," the first terminal device is in a sleep mode (or sleep state) and does not perform monitoring.

[0109] In another possible embodiment, the first terminal device periodically determines whether the speed of the first terminal device is greater than a preset speed (for example, the preset speed is 10 km / h). For example, the first terminal device measures the average speed for each past Y seconds (Y is an integer or a decimal, for example, Y=3) and determines whether the measured speed is greater than the preset speed. If the measured speed is greater than the preset speed, the first terminal device determines that the first terminal device is in a non-walking state and starts monitoring the broadcast information of the second terminal device. In this manner, the energy consumption caused by monitoring the broadcast information by the first terminal device can be reduced.

[0110] In the present disclosure, there may be multiple methods for the first terminal device to specifically determine whether the second trajectory information matches the first trajectory information. The specific matching method used is not limited in the present disclosure. For example, whether the second trajectory information matches the first trajectory information may be determined based on the trajectory similarity between the first trajectory information and the second trajectory information. In a possible embodiment for determining the trajectory similarity, the trajectory data (including longitude and latitude) of the two terminals are normalized, and then the similarity between the longitudes and the latitudes of the two terminals are calculated separately. If the similarity between the longitudes of the two terminal devices is equal to or less than a first threshold and the similarity between the latitudes of the two terminal devices is equal to or less than a second threshold, the trajectory information of the two terminal devices is deemed to match. The specific values ​​of the first threshold and the second threshold may be determined based on actual circumstances. Methods for calculating the similarity include Euclidean distance, cosine similarity, Pearson correlation coefficient, etc., but they will not be listed one by one in this specification.

[0111] In the present disclosure, whether the second orbit information matches the first orbit information may alternatively be determined in another manner. For example, the first terminal device may determine whether the second orbit information matches the first orbit information based on the reference signal received power (RSRP) of the broadcast signal of the second terminal device. For example, if the RSRP of the broadcast signal of the second terminal device measured by the first terminal device is equal to or greater than a predetermined threshold and the duration exceeds a predetermined time threshold, it may be determined that the second orbit information matches the first orbit information.

[0112] S405: The first terminal device sends first indication information to the access network device when the second trajectory information of the second terminal device matches the first trajectory information of the first terminal device, and in response, the access network device receives the first indication information.

[0113] The first indication information indicates that the trajectory of the first terminal device matches the trajectory of the second terminal device.

[0114] In a possible embodiment, the second trajectory information of the second terminal device within the first duration may be matched with the first trajectory information of the first terminal device within the first duration. The first duration may be a time length or a time period. For example, if the first duration is a time length, the first duration may be, for example, 30 seconds, 60 seconds, or 2 minutes. If the first duration is a time period, the first duration may be, for example, from 10:10:10 in the year 2021 to 10:12:10 in the year 2021. The first duration may be configured by the access network device, agreed upon in a protocol, or autonomously determined by the first terminal device. This is not a limitation in the present disclosure.

[0115] It should be noted that if the second trajectory information does not match the first trajectory information, the first terminal device does not need to send the first indication information to the access network device.

[0116] In a possible embodiment, the first indication information further indicates second identification information of the second terminal device. The second identification information may include at least one of a cell identifier of a second cell in which the second terminal device is located and a second C-RNTI of the second terminal device. The second C-RNTI of the second terminal device may be abbreviated as C-RNTI of the second terminal device.

[0117] In another possible embodiment, the first indication information and the second identification information are the same information. Specifically, the first indication information may specifically indicate the second identification information of the second terminal device. When the first indication information specifically indicates the second identification information and the access network device obtains the second identification information, the access network device may determine that the trajectory of the first terminal device matches the trajectory of the second terminal device. In this embodiment, this is equivalent to the first indication information implicitly indicating that the trajectory of the first terminal device matches the trajectory of the second terminal device.

[0118] In the present disclosure, the second identification information may not be indicated by using the first indication information, and the second identification information and the first indication information are carried by using two independent information elements.

[0119] In the present disclosure, when the second orbit information matches the first orbit information, the first terminal device may further change the monitoring periodicity from the first monitoring periodicity to a second monitoring periodicity. The second monitoring periodicity is greater than the first monitoring periodicity. The first monitoring periodicity and the second monitoring periodicity may be configured by the access network device, agreed upon in a protocol, or autonomously determined by the first terminal device. This is not limited in the present disclosure.

[0120] Optionally, at S406, the access network device sends second indication information to the first terminal device, and correspondingly, the first terminal device receives the second indication information from the access network device.

[0121] The second indication information indicates to change the orbit information reporting periodicity of the first terminal device to a second periodicity, or the second indication information indicates to the first terminal device to temporarily suspend the orbit information reporting. The second periodicity is greater than the first periodicity, and the first periodicity is the orbit information reporting periodicity before the first indication information is transmitted, or the first periodicity is a pre-agreed orbit information reporting periodicity.

[0122] For example, the first periodicity is T1. When receiving the first indication information, the access network device may change the first periodicity to T2, where T1 < T2 ≤ ∞. In this way, the first terminal device can reduce the frequency of reporting orbit information to reduce the energy consumption and radio resource occupancy of the first terminal device.

[0123] In the present disclosure, in an embodiment, when the second indication information indicates to temporarily suspend the orbit information reporting, the first terminal device may start a timer when receiving the second indication information. The timing duration of the timer may be pre-configured in the protocol, or may be configured by the access network device, or may be autonomously set by the first terminal device. When the timer expires, the first terminal device reports the orbit information to the access network device.

[0124] In another embodiment, when the second indication information indicates to temporarily suspend the orbit information reporting, the first terminal device waits for an indication from the access network device and may report the orbit information when the access network device indicates to the first terminal device to report the orbit information again.

[0125] In the present disclosure, the access network device may manage one or more terminal devices having a trajectory that matches the trajectory of the second terminal device. For example, the access network device may create a device list. In a possible embodiment, the device list is shown in Table 1.

[0126] [Table 1]

[0127] In Table 1, three second terminal devices are included, V-UE1, V-UE2, and V-UE3, respectively.

[0128] UE1 to UE5 are terminal devices having an orbit that matches the orbit of V-UE1, UE6 to UE10 are terminal devices having an orbit that matches the orbit of V-UE2, and UE11 to UE15 are terminal devices having an orbit that matches the orbit of V-UE3.

[0129] The access network device receives first indication information of UE 16, and it is assumed that the first indication information indicates that the trajectory of UE 16 matches the trajectory of V-UE 1. In this case, the access network device may add UE 16 to the row corresponding to V-UE 1 in the list.

[0130] It is assumed that the access network device determines that the trajectory of UE5 no longer matches the trajectory of V-UE1. In this case, the access network device may remove UE5 from Table 1.

[0131] The foregoing is merely an example. The access network device may manage one or more terminal devices having a trajectory that matches the trajectory of the second terminal device in another manner. This is not a limitation of the present disclosure.

[0132] In the present disclosure, when sending the second indication information to the first terminal device, the access network device may further indicate the second terminal device to report orbit information, and determine the orbit information of the first terminal device based on the orbit information of the second terminal device.

[0133] In the present disclosure, if the access network device does not send second indication information to the first terminal device, and if the first terminal device determines that the second orbit information of the second terminal device matches the first orbit information of the first terminal device, the first terminal device may actively change the orbit information reporting periodicity of the first terminal device to the second periodicity, or suspend orbit information reporting if it does not receive the second indication information.

[0134] S407: The access network device sends a second trajectory request message to the second terminal device, where the second trajectory request message indicates to the second terminal device to report second trajectory information of the second terminal device.

[0135] The second orbit request message may include an orbit information reporting periodicity configured for the second terminal device.

[0136] Optionally, the second trajectory request message may further indicate one or more of the positioning periodicity, reported speed information, trip plan information, predicted trajectory information, etc. of the second terminal device.

[0137] S408: The second terminal device sends second trajectory information to the access network device.

[0138] The specific process by which the second terminal device transmits the second trajectory information based on the second trajectory request message is not limited in the present disclosure, and will not be described in detail herein.

[0139] In addition, the above step execution sequence is just an example, and the specific step execution sequence is not limited in the present disclosure. For example, S407 and S408 can be executed after S401 to S406, or S407 and S408 can be executed before S401 to S406, or S407 and S408 can be executed at any step between S401 and S406. In the present disclosure, the same principle also applies to the following examples, and the details will not be described again herein.

[0140] In the present disclosure, an access network device may determine first trajectory information of a first terminal device based on second trajectory information of a second terminal device. In a possible embodiment, the access network device may use the second trajectory information as the first trajectory information. In a possible embodiment, the access network device may infer the first trajectory information of a first terminal device based on the second trajectory information of a second terminal device.

[0141] Furthermore, if the orbit of the second terminal device matches the orbit of one or more terminal devices, the access network device may determine orbit information of the one or more terminal devices based on the second orbit information of the second terminal device.

[0142] In the present disclosure, the access network device may use the first trajectory information of the first terminal device in scenarios such as AI-based mobility enhancement, load balancing, and network energy saving. The specific process is not limited in the present disclosure, and the details will not be described herein.

[0143] Optionally, when determining the first orbit information of the first terminal device based on the second orbit information of the second terminal device, the access network device may determine the first orbit information of the first terminal device based on the second orbit information of the second terminal device for a certain period of time, which period may be agreed upon in a protocol, indicated to the UE by the access network device, or implemented by using a mechanism such as a timer.

[0144] Optionally, after receiving the second indication information, the first terminal device may further continue to monitor the second trajectory information of the second terminal device, and provide an indication to the access network device when it determines that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device.

[0145] Specifically, in S409, the first terminal sends third indication information to the access network device when the second trajectory information is no longer consistent with the first trajectory information.

[0146] The third indication information indicates that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device.

[0147] In a possible embodiment, if it is determined that the second orbit information of the second terminal device within the second duration no longer matches the first orbit information of the first terminal device within the second duration, third indication information may be transmitted. The second duration may be a time length or a time period. For example, if the second duration is a time length, the second duration may be, for example, 30 seconds, 60 seconds, or 2 minutes. If the second duration is a time period, the second duration may be, for example, from 10:10:10 in the year 2021 to 10:12:10 in the year 2021. The second duration may be configured by the access network device, agreed upon in a protocol, or autonomously determined by the first terminal device. This is not a limitation in the present disclosure.

[0148] In a possible embodiment, the first terminal device determines whether the second orbit information still matches the first orbit information based on the RSRP of the broadcast signal of the second terminal device. For example, if the RSRP of the broadcast signal of the second terminal device measured by the first terminal device is less than a preset threshold and the duration exceeds a preset time threshold, it may be determined that the second orbit information no longer matches the first orbit information.

[0149] In another possible embodiment, the first terminal device may determine whether the first trajectory information is consistent with the second trajectory information based on the trajectory similarity between the first trajectory information and the second trajectory information. For details, please refer to the description in S404. The details will not be described again in this specification.

[0150] Optionally, at S410, the access network device sends fourth indication information to the first terminal device, and correspondingly, the first terminal device receives the fourth indication information from the access network device.

[0151] The fourth indication information indicates to change the orbit information reporting periodicity of the first terminal device from the second periodicity to a third periodicity, the third periodicity being smaller than the second periodicity, or the fourth indication information indicates to the first terminal device to enable the orbit information reporting, where the third periodicity may be equal to or may not be equal to the first periodicity, which is not limited in the present disclosure.

[0152] The first terminal device may report the trajectory information to the access network device based on the fourth indication information. A specific process is not described.

[0153] In the present disclosure, if the access network device does not send the fourth indication information to the first terminal device, and if the first terminal device determines that the second trajectory information of the second terminal device does not match the first trajectory information of the first terminal device, if the first terminal device is currently reporting the trajectory information of the first terminal device to the access network device based on the second periodicity or has suspended trajectory information reporting, the first terminal device may report the trajectory information of the first terminal device to the access network device based on the third periodicity if it does not receive the fourth indication information.

[0154] The method provided in the present disclosure may further be applied to a scenario in which a second terminal device performs cell handover. For example, the second terminal device is handed over to a target cell. In this case, the access network device to which the currently connected cell belongs may further indicate to the access network device to which the target cell belongs that the trajectories of one or more terminal devices are consistent with the trajectory of the second terminal device. If the first terminal device is also handed over to the target cell, after being handed over to the target cell, the first terminal device may continue to report trajectory information based on the second periodicity or suspend trajectory information reporting, thereby reducing the number of trajectory information reports after handover, saving the electrical energy of the first terminal device, and reducing the occupation of air interface resources. For details, please refer to the following description in S707. Details will not be described herein.

[0155] When the above-mentioned method is implemented and the first terminal device determines that the second trajectory information of the second terminal device matches the first trajectory information of the first terminal device, the first terminal device uses the first indication information to indicate to the access network device that the trajectory of the first terminal device matches the trajectory of the second terminal device. In this case, the access network device can use the second indication information to indicate to the first terminal device to increase the trajectory information reporting periodicity, thereby reducing the number of trajectory information reports and avoiding frequent trajectory information reports performed by the first terminal device, thereby saving the electric energy of the first terminal device and reducing the occupation of air interface resources. In a possible scenario, the second terminal device is an intelligent vehicle. Because intelligent vehicles have abundant sensors, they are more suitable for trajectory prediction and have high trajectory prediction accuracy. The access network device can determine the trajectory information of the first terminal device based on the trajectory information of the second terminal device.

[0156] FIG. 6 is a schematic flow chart of an information transmission method according to the present disclosure.

[0157] In this method procedure, a first terminal device may obtain orbit information of a second terminal device and determine whether the orbit information of the second terminal device matches the orbit information of the first terminal device. If the orbit information of the second terminal device matches the orbit information of the first terminal device, the first terminal device may indicate to the second terminal device that the orbit of the first terminal device matches the orbit of the second terminal device. Then, the second terminal device indicates to the access network device that the orbits of the first terminal device and the second terminal device match. In this case, the access network device may indicate to the first terminal device to increase the orbit information reporting periodicity, reduce the number of orbit information reports, or suspend orbit information reporting. A specific procedure includes the following steps:

[0158] S601: An access network device sends a first track request message to a first terminal device.

[0159] S602: The first terminal device reports first trajectory information to the access network device.

[0160] S601 and S602 are optional operations. Specifically, before S603, the first terminal device may not start reporting the first orbit information to the access network device. Alternatively, S601 is optional. For example, the positioning periodicity and the first periodicity may be agreed upon in a protocol and do not need to be indicated by the access network device to the first terminal device by using signaling.

[0161] S603: The second terminal device transmits second trajectory information.

[0162] S604: The first terminal device obtains second trajectory information of the second terminal device, and determines whether the second trajectory information matches the first trajectory information.

[0163] For the specific contents of S601 to S604, please refer to the descriptions in S401 to S404, and the details will not be described again in this specification.

[0164] S605: The first terminal device sends fifth indication information to the second terminal device when the second trajectory information of the second terminal device matches the first trajectory information of the first terminal device, and in response, the second terminal device receives the fifth indication information from the first terminal device.

[0165] The fifth indication information indicates that the trajectory of the first terminal device matches the trajectory of the second terminal device.

[0166] In a possible embodiment, the second trajectory information of the second terminal device within the first duration can be compared with the first trajectory information of the first terminal device within the first duration. For the specific content of the first duration, please refer to the description in S405. The details will not be described again in this specification.

[0167] It should be noted that if the second trajectory information does not match the first trajectory information, the first terminal device does not need to send the fifth indication information to the second terminal device.

[0168] In a possible embodiment, the fifth indication information further indicates first identification information of the first terminal device. The first identification information may include at least one of a cell identifier of a first cell in which the first terminal device is located and a C-RNTI of the first terminal device. The cell identifier of the first cell may be referred to as a first cell identifier. The C-RNTI of the first terminal device may be referred to as a first C-RNTI.

[0169] In another possible embodiment, the fifth indication information and the first identification information are the same information. Specifically, the first indication information may specifically indicate the first identification information of the first terminal device. When the fifth indication information specifically indicates the first identification information and the second terminal device obtains the first identification information, the second terminal device may determine that the trajectory of the first terminal device matches the trajectory of the second terminal device. In this embodiment, this is equivalent to the fifth indication information implicitly indicating that the trajectory of the first terminal device matches the trajectory of the second terminal device.

[0170] In the present disclosure, the first identification information may not be indicated by using the fifth indication information, and the first identification information and the fifth indication information are carried by using two independent information elements.

[0171] The first terminal device may transmit the fifth indication information to the second terminal device via the sidelink. The fifth indication information may be conveyed by using a DRB or by using an SRB, which is not a limitation in this disclosure.

[0172] The transmission resources used by the first terminal device to transmit the fifth indication information via the sidelink may be allocated to the first terminal device by the access network device or obtained by the first terminal device through resource recognition. For example, the access network device may configure a grant for sidelink transmission resources for the first terminal device by using RRC signaling, where the sidelink transmission resources include at least one of periodicity, time offset, frequency offset, etc. Alternatively, the first terminal device may recognize an available sidelink transmission resource set, select resources for data transmission, and notify another terminal device of resource reservation information. The specific content of the sidelink transmission resource allocation manner is not limited in this disclosure and will not be described in detail herein.

[0173] In the present disclosure, a second terminal device may manage one or more terminal devices having a trajectory that matches the trajectory of the second terminal device. For example, the second terminal device may create a device list. In a possible embodiment, the device list is shown in Table 2.

[0174] [Table 2]

[0175] In Table 2, three cells are included, Cell 1, Cell 2, and Cell 3, respectively.

[0176] One or more terminal devices having a trajectory that matches the trajectory of the second device may access different cells. Therefore, the second terminal device may use terminal devices in the same cell as a group. In Table 2, UE1 to UE5 are terminal devices in cell 1, UE6 and UE7 are terminal devices in cell 2, and UE8 and UE9 are terminal devices in cell 3.

[0177] The second device receives the fifth indication information of the UE 10, and it is assumed that the fifth indication information indicates that the trajectory of the UE 10 located in cell 2 is consistent with the trajectory of the second device. In this case, the second terminal device may add the UE 10 to the row corresponding to cell 2 in the list.

[0178] It is assumed that the second terminal device determines that the trajectory of UE5 no longer matches the trajectory of V-UE1. In this case, the second terminal device may delete UE5 from Table 2.

[0179] S606: The second terminal device sends first indication information to the access network device.

[0180] In a possible embodiment, the first indication information and the fifth indication information may be the same information. Specifically, the first terminal device transmits the first indication information to the second terminal device, and the second terminal device forwards the first indication information to the access network device.

[0181] In another possible embodiment, the first indication information is determined based on the fifth indication information. In this embodiment, the first indication information may indicate that the trajectory of one or more terminal devices is consistent with the trajectory of a second terminal device, and the one or more terminal devices include the first terminal device.

[0182] In addition to indicating that the trajectory of the first terminal device matches the trajectory of the second terminal device, the first indication information may further indicate identification information of the one or more terminal devices.

[0183] Alternatively, the first indication information and the identification information of the one or more terminal devices are the same information. In other words, the first indication information may specifically indicate the identification information of the one or more terminal devices. When obtaining the identification information of the one or more terminal devices, the access network device may determine that the trajectory of the one or more terminal devices matches the trajectory of the second terminal device.

[0184] When the first indication information indicates the identification information of one or more terminal devices, the first indication information may indicate the identification information of all terminal devices having a trajectory that matches the trajectory of the second terminal device, or may indicate only the identification information of terminal devices that need to be added or deleted among the terminal devices having a trajectory that matches the trajectory of the second terminal device.

[0185] For example, referring to Table 2 above, the second terminal device manages one or more terminal devices having a trajectory that matches the trajectory of the second terminal device, and the one or more terminal devices are arranged in a device list. The first indication information may indicate identification information of the one or more terminal devices in the device list, or the first indication information may indicate change amount information of the device list.

[0186] For example, if UE10 is newly added to Table 2, the second terminal device may indicate the identification information of UE1 to UE10 by using the first indication information, or may indicate only the identification information of UE10 (i.e., the change amount information).

[0187] Optionally, in S607, the access network device sends second indication information to the first terminal device, and correspondingly, the first terminal device receives the second indication information from the access network device.

[0188] In the present disclosure, if the access network device does not send second indication information to the first terminal device, and if the first terminal device determines that the second orbit information of the second terminal device matches the first orbit information of the first terminal device, the first terminal device may actively change the orbit information reporting periodicity of the first terminal device to the second periodicity, or suspend orbit information reporting if it does not receive the second indication information.

[0189] For the specific content of S607, please refer to the description in S406, and the details will not be described again in this specification.

[0190] S608: The access network device sends a second trajectory request message to the second terminal device, where the second trajectory request message indicates to the second terminal device to report second trajectory information of the second terminal device.

[0191] For the specific content of S608, please refer to the description in S407, and the details will not be described again in this specification.

[0192] S609: The second terminal device sends second trajectory information to the access network device.

[0193] For the specific content of S609, please refer to the description in S408, and the details will not be described again in this specification.

[0194] S610: The first terminal device sends third indication information to the second terminal device when the second trajectory information no longer matches the first trajectory information.

[0195] The third indication information indicates that the trajectory of the first terminal device is no longer consistent with the trajectory of the second terminal device. The second duration may be configured by the access network device, agreed upon in a protocol, or autonomously determined by the first terminal device. This is not a limitation in the present disclosure.

[0196] For the specific content of S610, please refer to the description in S409, and the details will not be described again in this specification.

[0197] S611: The second terminal device sends sixth indication information to the access network device.

[0198] The sixth indication information indicates that a trajectory of the at least one terminal device no longer matches a trajectory of the second terminal device, where the at least one terminal device includes the first terminal device.

[0199] In another embodiment, S611 may alternatively be replaced with the following steps:

[0200] The second terminal device forwards the third indication information to the access network device.

[0201] Optionally, at S612, the access network device sends fourth indication information to the first terminal device, and correspondingly, the first terminal device receives the fourth indication information from the access network device.

[0202] In the present disclosure, if the access network device does not send the fourth indication information to the first terminal device, and if the first terminal device determines that the second trajectory information of the second terminal device does not match the first trajectory information of the first terminal device, if the first terminal device is currently reporting the trajectory information of the first terminal device to the access network device based on the second periodicity or has suspended trajectory information reporting, the first terminal device may report the trajectory information of the first terminal device to the access network device based on the third periodicity if it does not receive the fourth indication information.

[0203] For the specific content of S612, please refer to the description in S410, and the details will not be described again in this specification.

[0204] The method provided in the present disclosure may further be applied to a scenario in which a second terminal device performs cell handover. For example, the second terminal device is handed over to a target cell. In this case, the access network device to which the currently connected cell belongs may further indicate to the access network device to which the target cell belongs that the trajectories of one or more terminal devices are consistent with the trajectory of the second terminal device. If the first terminal device is also handed over to the target cell, after being handed over to the target cell, the first terminal device may continue to report trajectory information based on the second periodicity or suspend trajectory information reporting, thereby reducing the number of trajectory information reports after handover, saving the electrical energy of the first terminal device, and reducing the occupation of air interface resources. For details, please refer to the following description in S707. Details will not be described herein.

[0205] When the above-mentioned method is implemented, and thereby it is determined that the second orbit information of the second terminal device is consistent with the first orbit information of the first terminal device, the first terminal device provides an indication to the second terminal device, and then the second terminal device uses the first indication information to indicate to the access network device that the orbit of the first terminal device is consistent with the orbit of the second terminal device. In this case, the access network device can use the second indication information to indicate to the first terminal device to increase the orbit information reporting periodicity, thereby reducing the number of orbit information reports, or to indicate to the first terminal device to suspend orbit information reporting, thereby avoiding frequent orbit information reports performed by the first terminal device, saving the electrical energy of the first terminal device, and reducing the occupation of air interface resources.

[0206] FIG. 7 is a schematic flow chart of an information transmission method according to the present disclosure.

[0207] In this method procedure, an access network device may obtain orbit information of a first terminal device and orbit information of a second terminal device, and determine whether the orbit information of the first terminal device matches the orbit information of the second terminal device. If the orbit information of the first terminal device matches the orbit information of the second terminal device, the first access network device may indicate to the first terminal device to increase the orbit information reporting periodicity, thereby reducing the number of orbit information reports. The specific procedure includes the following steps:

[0208] S701: An access network device sends a first trajectory request message to a first terminal device.

[0209] S702: The first terminal device reports first trajectory information to the access network device, and the first access network device correspondingly obtains the first trajectory information of the first terminal device.

[0210] For the specific contents of S701 and S702, please refer to the descriptions in S401 and S402, and the details will not be described again in this specification.

[0211] S703: The access network device sends a second trajectory request message to the second terminal device.

[0212] The second orbit request message may include a positioning periodicity and an orbit information reporting periodicity configured for the second terminal device.

[0213] Optionally, the second trajectory request message may further indicate the reported speed information, trip plan information, predicted trajectory information, etc. of the second terminal device.

[0214] For the specific content of S703, please refer to the description in S407, and the details will not be described again in this specification.

[0215] S704: The second terminal device reports second trajectory information to the access network device, and the first access network device correspondingly obtains the second trajectory information of the second terminal device.

[0216] For the specific content of S704, please refer to the description in S408, and the details will not be described again in this specification.

[0217] S705: The first access network device sends second indication information to the first terminal device when the second trajectory information of the second terminal device matches the first trajectory information of the first terminal device.

[0218] The second indication information indicates to change the orbit information reporting periodicity of the first terminal device to a second periodicity, the second periodicity being greater than the first periodicity, and the first periodicity being the orbit information reporting periodicity before the first indication information is transmitted.

[0219] There may be multiple ways for the first access network device to specifically determine that the second trajectory information matches the first trajectory information. For example, whether the first trajectory information matches the second trajectory information may be determined based on the trajectory similarity between the first trajectory information and the second trajectory information. Methods for calculating the trajectory similarity include Euclidean distance, cosine similarity, Pearson correlation coefficient, etc. This is not limited in the present disclosure. For details, please refer to the description in S404. The details will not be described again in this specification.

[0220] As described in S406, the first access network device may further use one or more terminal devices having a trajectory that matches the trajectory of the second terminal device as a device list. In this case, the first access network device may further add the first terminal device to the device list.

[0221] In a possible embodiment, the first access network device may simply analyze whether the trajectory of the first terminal device near the second terminal device matches the trajectory of the second terminal device. For example, if the first access network device determines that the distance between the first terminal device and the second terminal device in a certain time period is equal to or less than a preset distance, the first access network device determines whether the trajectory of the first terminal device matches the trajectory of the second terminal device.

[0222] The first access network device may further determine whether the trajectory of the first terminal device matches the trajectory of the second terminal device if the absolute value of the difference between the average speeds of the second terminal device and the first terminal device is less than or equal to a preset speed threshold based on the average speeds of the second terminal device and the first terminal device over a period of time (for example, the average speeds are calculated every 3 seconds in 9 seconds). This can reduce the complexity involved in trajectory similarity calculation, thereby reducing the amount of calculation and improving efficiency.

[0223] S706: The first access network device sends fourth indication information to the first terminal device when the second trajectory information no longer matches the first trajectory information.

[0224] In addition, as described in S406, the first access network device may further use one or more terminal devices having a trajectory that matches the trajectory of the second terminal device as a device list. In this case, the first access network device may further delete the first terminal device from the device list.

[0225] For other contents of S706, please refer to the descriptions in S409 and S410, and the details will not be described again in this specification.

[0226] In the present disclosure, the second terminal device may further perform cell handover, for example, to a cell managed by the second access network device. In this case, the first access network device may further perform the following procedure:

[0227] S707: If it is determined that the second terminal device will be handed over to a cell managed by the second access network device, the first access network device sends seventh indication information to the second access network device.

[0228] The seventh indication information indicates that a trajectory of the one or more terminal devices matches a trajectory of a second terminal device, where the one or more terminal devices include the first terminal device.

[0229] In a possible embodiment, the one or more terminal devices indicated by the seventh indication information include a terminal device that is handed over to the same target cell as the second terminal device, and also includes a terminal device that is handed over to a target cell different from the second terminal device.

[0230] In a possible embodiment, the one or more terminal devices indicated by the seventh indication information include only terminal devices that are handed over to the same target cell as the second terminal device.

[0231] For example, assume that one or more terminal devices having trajectories that match the trajectory of the second terminal device are placed in the device list shown in Table 3.

[0232] [Table 3]

[0233] It is assumed that the target cell to which the second terminal device is handed over is cell 1, the target cell to which UE6 to UE8 are handed over is cell 2, and the target cell to which UE9 and UE10 are handed over is cell 3. In this case, the seventh indication information may indicate UE1 to UE10, specifically, all terminal devices in the device list. Alternatively, the seventh indication information may indicate UE1 to UE5, specifically, terminal devices in the device list that are handed over to the same target cell as the second terminal device.

[0234] When the above-mentioned method is implemented, and thereby it is determined that the second orbit information of the second terminal device is consistent with the first orbit information of the first terminal device, the first access network device may use the second indication information to indicate to the first terminal device to increase the orbit information reporting periodicity, thereby reducing the number of orbit information reports, avoiding frequent orbit information reports performed by the first terminal device, and reducing the air interface leakage of location information of the first terminal device.

[0235] In the foregoing embodiments provided in the present application, the methods provided in the embodiments of the present application are described individually in terms of interactions between devices. To implement the functions in the methods provided in the foregoing embodiments of the present application, the access network device or the terminal device includes a hardware structure and / or a software module, and the functions may be implemented in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module. Whether a function among the functions is performed by using a hardware structure, a software module, or a combination of a hardware structure and a software module depends on the individual application and design constraints of the technical solution.

[0236] The module division in the embodiments of the present application is merely an example and is a logical functional division. In actual implementation, there may be other division patterns. In addition, the functional modules in the embodiments of the present application may be integrated into one processor, may exist physically alone, or two or more modules may be integrated into one module. The integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0237] Similar to the above concept, as shown in FIG. 8, an embodiment of the present application further provides a communication device 800 configured to perform the functions of an access network device or a terminal device in the above method. The form of the communication device is not limited, and the communication device may be a hardware structure, a software module, or a combination of a hardware structure and a software module. For example, the device may be a software module or a chip system. In this embodiment of the present application, the chip system may include a chip, or may include a chip and another discrete component. The device 800 may include a processing unit 801 and a communication unit 802.

[0238] In this embodiment of the present application, the communication unit may also be referred to as a transceiver unit and may include a transmitting unit and / or a receiving unit, which are configured to perform the transmitting and receiving steps performed by the access network device, the first terminal device, or the second terminal device in the aforementioned method embodiments, respectively.

[0239] Hereinafter, the communication device provided in this embodiment of the present application will be described in detail with reference to Figures 8 and 9. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for the contents not described in detail, please refer to the above method embodiment. For the sake of brevity, the details will not be described again in this specification.

[0240] The communication unit may also be referred to as a transceiver device. The processing unit may also be referred to as a processing module, a processing device, etc. Optionally, a component configured to perform a receiving function in the communication unit 802 may be considered a receiving unit, and a component configured to perform a transmitting function in the communication unit 802 may be considered a transmitting unit. That is, the communication unit 802 includes a receiving unit and a transmitting unit. The communication unit may be implemented as a pin, a transceiver machine, a transceiver, a transceiver circuit, etc. The processing unit may be implemented as a processor, a processing board, etc. The receiving unit may be implemented as a pin, a receiver machine, a receiver, a receiving circuit, etc. The transmitting unit may be implemented as a pin, a transmitter machine, a transmitter, a transmitter circuit, etc.

[0241] When the communication device 800 performs the function of the access network device in the procedure shown in FIG. 4 or FIG. 6 in the above-described embodiment, The processing unit is configured to receive first indication information by using the communication unit, the first indication information indicating that a trajectory of the first terminal device matches a trajectory of the second terminal device; The processing unit is configured to send second indication information to the first terminal device by using the communication unit, wherein the second indication information indicates to change the orbit information reporting periodicity of the first terminal device from the first periodicity to the second periodicity, or the second indication information indicates to suspend the orbit information reporting, and the second periodicity is greater than the first periodicity.

[0242] When the communication device 800 performs the function of the first terminal device in the procedure shown in FIG. 4 or FIG. 6 in the above-described embodiment, the communication unit is configured to obtain second trajectory information of the second terminal device, and send first indication information when the second trajectory information matches the first trajectory information of the first terminal device, the first indication information indicating that the trajectory of the first terminal device matches the trajectory of the second terminal device; The processing unit is configured to decide to change the orbit information reporting periodicity to a second periodicity or to suspend the orbit information reporting, the second periodicity being greater than the first periodicity, and the first periodicity being the orbit information reporting periodicity before the first indication information is transmitted.

[0243] When the communication device 800 performs the function of the second terminal device in the procedure shown in FIG. 4 or FIG. 6 in the above-described embodiment, The processing unit is configured to determine first indication information; The communication unit is configured to send first indication information to the access network device, where the first indication information indicates that a trajectory of the first terminal device matches a trajectory of the second terminal device.

[0244] When the communication device 800 performs the function of the first access network device in the procedure shown in FIG. 7 in the above embodiment, The processing unit is configured to obtain first trajectory information of a first terminal device and obtain second trajectory information of a second terminal device by using the communication unit; The processing unit is configured to send second indication information to the first terminal device by using the communication unit when the second orbit information matches the first orbit information, and the second indication information indicates to change the orbit information reporting periodicity to a second periodicity, the second periodicity being greater than the first periodicity, and the first periodicity being the orbit information reporting periodicity before the first indication information is sent.

[0245] The foregoing are merely examples. The processing unit 801 and the communication unit 802 may further perform other functions. For more detailed descriptions, please refer to the related descriptions in the method embodiments shown in Figure 4, Figure 6, or Figure 7. Details will not be described again here.

[0246] 9 shows a communication device 900 according to an embodiment of the present application. The communication device shown in FIG. 9 may be a hardware circuit implementation of the communication device shown in FIG. 8. This communication device may be applicable to the aforementioned flowcharts and perform the functions of the first terminal device, the second terminal device, or the access network device in the aforementioned method embodiments. For ease of description, FIG. 9 shows only the main components of this communication device.

[0247] 9 , the communication device 900 includes a processor 910 and an interface circuit 920. The processor 910 and the interface circuit 920 are coupled to each other. It may be understood that the interface circuit 920 may be a transceiver, a pin, an interface circuit, or an input / output interface. Optionally, the communication device 900 may further include a memory 930, which is configured to store instructions to be executed by the processor 910, or to store input data required by the processor 910 to execute the instructions, or to store data generated after the processor 910 executes the instructions. Optionally, some or all of the memory 930 may be located in the processor 910.

[0248] When the communication device 900 is configured to perform the method shown in FIG. 4, FIG. 6, or FIG. 7, the processor 910 is configured to perform the functions of the processing unit 801, and the interface circuit 920 is configured to perform the functions of the communication unit 802.

[0249] If the communication device is a chip used in a terminal device, the chip in the terminal device performs the functions of the terminal device in the above method embodiments. The chip in the terminal device receives information from another module (e.g., a radio frequency module or an antenna) in the terminal device, and the information is transmitted to the terminal device by the access network device. Alternatively, the chip in the terminal device transmits information to another module (e.g., a radio frequency module or an antenna) in the terminal device, and the information is transmitted to the access network device by the terminal device.

[0250] If the communication apparatus is a chip used in an access network device, the chip in the access network device performs the functions of the access network device in the above-mentioned method embodiments. The chip in the access network device receives information from another module (e.g., a radio frequency module or an antenna) in the access network device, and the information is transmitted to the access network device by the terminal device. Alternatively, the chip in the access network device transmits information to another module (e.g., a radio frequency module or an antenna) in the access network device, and the information is transmitted to the terminal device by the access network device.

[0251] It may be understood that a processor in this disclosure may be a central processing unit, or may be another general-purpose processor, a digital signal processor, an application specific integrated circuit or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

[0252] Memory in this disclosure may be random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, removable hard disk, or any other form of storage medium well known in the art.

[0253] Those skilled in the art will appreciate that the present disclosure may be implemented as a method, a system, or a computer program product. Therefore, the present disclosure may take the form of a hardware-only embodiment, a software-only embodiment, or an embodiment involving a combination of software and hardware. Additionally, the present disclosure may take the form of a computer program product implemented in one or more computer-usable storage media (including, but not limited to, disk memory, optical memory, etc.) containing computer-usable program code.

[0254] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the present disclosure. It should be understood that computer program instructions can be used to implement each procedure and / or each block in the flowcharts and / or block diagrams, and combinations of procedures and / or blocks in the flowcharts and / or block diagrams. These computer program instructions are provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or any other programmable data processing device to produce a machine, whereby the instructions executed by the processor of the computer or any other programmable data processing device produce an apparatus for performing the specific functions in one or more procedures in the flowcharts and / or in one or more blocks in the block diagrams.

[0255] These computer program instructions may alternatively be stored in a computer-readable memory that can be configured to cause a computer or another programmable data processing device to operate in a particular manner, whereby the instructions stored in the computer-readable memory produce a work product that includes an instruction apparatus that implements a particular function in one or more steps in the flowcharts and / or in one or more blocks in the block diagrams.

[0256] It is apparent that those skilled in the art can make various modifications and variations to the present disclosure without departing from the scope of the present disclosure, and therefore, the present disclosure is intended to cover these modifications and variations of the present disclosure if they fall within the scope of the claims of the present disclosure and their equivalent technologies.

Claims

1. receiving first indication information, the first indication information indicating that a trajectory of a first terminal device matches a trajectory of a second terminal device; transmitting second indication information to the first terminal device, wherein the second indication information indicates to change an orbit information reporting periodicity of the first terminal device to a second periodicity, or the second indication information indicates to the first terminal device to suspend orbit information reporting, the second periodicity being greater than a first periodicity, and the first periodicity being the orbit information reporting periodicity of the first terminal device before the first indication information is transmitted; An information transmission method including:

2. The step of receiving first indication information comprises:

2. The method of claim 1, comprising receiving the first indication information from the first terminal device, the first indication information specifically indicating a second identification information of the second terminal device.

3. 2. The method of claim 1, wherein the first indication information indicates that a trajectory of one or more terminal devices matches the trajectory of the second terminal device, the one or more terminal devices including the first terminal device.

4. The step of receiving first indication information comprises: receiving the first indication information from the second terminal device; The method of claim 3 , wherein the first indication information specifically indicates identification information of the one or more terminal devices.

5. The method of claim 1 , further comprising determining trajectory information of the first terminal device based on trajectory information of the second terminal device.

6. 2. The method of claim 1, further comprising: receiving third indication information, the third indication information indicating that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device.

7. The method of claim 6 , wherein the third indication information is from the first terminal device or the second terminal device.

8. 7. The method of claim 6, further comprising: transmitting fourth indication information to the first terminal device, wherein the fourth indication information indicates to change the orbit information reporting periodicity of the first terminal device from the second periodicity to a third periodicity, or the fourth indication information indicates to the first terminal device to enable the orbit information reporting, and the third periodicity is smaller than the second periodicity.

9. obtaining second trajectory information of a second terminal device; transmitting first indication information when the second trajectory information matches first trajectory information of a first terminal device, the first indication information indicating that the trajectory of the first terminal device matches the trajectory of the second terminal device; receiving second indication information from an access network device, the second indication information indicating to change an orbit information reporting periodicity of the first terminal device to a second periodicity, or the second indication information indicating to the first terminal device to suspend orbit information reporting, the second periodicity being greater than a first periodicity, and the first periodicity being the orbit information reporting periodicity before the first indication information is transmitted; An information transmission method including:

10. The step of transmitting first indication information comprises:

10. The method of claim 9, comprising: transmitting the first indication information to the access network device, the first indication information specifically indicating a second identification information of the second terminal device.

11. The step of transmitting first indication information comprises:

10. The method of claim 9, comprising: transmitting the first indication information to the second terminal device, the first indication information specifically indicating first identification information of the first terminal device.

12. The step of obtaining second trajectory information of a second terminal device includes:

10. The method of claim 9, comprising obtaining the second trajectory information of the second terminal device via a sidelink.

13. The second orbit information includes one or more pieces of second positioning information, and the second positioning information includes:

10. The method of claim 9, wherein the second positioning information includes at least one of the following information: time information corresponding to the second positioning information, speed information of the second terminal device, movement direction information of the second terminal device, location information of the second terminal device, a second cell identifier of the second terminal device, or a second cell radio network temporary identifier of the second terminal device.

14. The first orbit information includes one or more first positioning information, and the first positioning information is 10. The method of claim 9, wherein the first positioning information includes at least one of the following information: time information corresponding to the first positioning information, speed information of the first terminal device, movement direction information of the first terminal device, or location information of the first terminal device.

15. 10. The method of claim 9, further comprising: transmitting third indication information when the second trajectory information no longer matches the first trajectory information of the first terminal device, the third indication information indicating that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device.

16. 16. The method of claim 15, further comprising: receiving fourth indication information from the access network device, the fourth indication information indicating to change the trajectory information reporting periodicity of the first terminal device to a third periodicity, the third periodicity being smaller than the second periodicity.

17. A step of receiving fifth indication information from a first terminal device, the fifth indication information indicating that a trajectory of the first terminal device matches a trajectory of a second terminal device; determining a first indication; sending the first indication information to an access network device, the first indication information indicating that the trajectory of the first terminal device matches the trajectory of the second terminal device; An information transmission method including:

18. 20. The method of claim 17, wherein the first indication information indicates that a trajectory of one or more terminal devices matches the trajectory of the second terminal device, the one or more terminal devices including the first terminal device.

19. 20. The method of claim 17, further comprising transmitting second trajectory information of the second terminal device via a sidelink.

20. The second orbit information includes one or more pieces of second positioning information, and the second positioning information includes:

20. The method of claim 19, comprising at least one of the following information: time information corresponding to the second positioning information, speed information of the second terminal device, movement direction information of the second terminal device, location information of the second terminal device, a second cell identifier of the second terminal device, or a second cell radio network temporary identifier of the second terminal device.

21. 20. The method of claim 17, further comprising receiving third indication information, the third indication information indicating that the trajectory of the first terminal device no longer matches the trajectory of the second terminal device.

22. sending the third indication information to the access network device; or 22. The method of claim 21, further comprising: transmitting sixth indication information to the access network device, the sixth indication information indicating that a trajectory of at least one terminal device no longer matches the trajectory of the second terminal device, the at least one terminal device including the first terminal device.

23. obtaining first trajectory information of a first terminal device and second trajectory information of a second terminal device; transmitting second indication information to the first terminal device when the second orbit information matches the first orbit information, the second indication information indicating to change an orbit information reporting periodicity of the first terminal device to a second periodicity, the second periodicity being greater than a first periodicity, and the first periodicity being the orbit information reporting periodicity before the first indication information is transmitted; An information transmission method including:

24. 24. The method of claim 23, further comprising determining trajectory information of the first terminal device based on trajectory information of the second terminal device.

25. 24. The method of claim 23, further comprising: when the first orbit information no longer matches the second orbit information, sending fourth indication information to the first terminal device, the fourth indication information indicating to change the orbit information reporting periodicity of the first terminal device to a third periodicity, the third periodicity being smaller than the second periodicity.

26. and further comprising the step of sending seventh indication information to the second access network device when it is determined that the second terminal device is to be handed over to a cell managed by the second access network device; 24. The method of claim 23, wherein the seventh indication information indicates that a trajectory of one or more terminal devices matches a trajectory of the second terminal device, the one or more terminal devices including the first terminal device.

27. 27. The method of claim 26, wherein the target cell to which the one or more terminal devices are handed over and the target cell to which the second terminal device is handed over belong to the same access network device.

28. The first orbit information includes one or more first positioning information, and the first positioning information is 24. The method of claim 23, wherein the first positioning information includes at least one of the following information: time information corresponding to the first positioning information, speed information of the first terminal device, movement direction information of the first terminal device, or location information of the first terminal device.

29. The second orbit information includes one or more pieces of second positioning information, and the second positioning information includes:

24. The method of claim 23, wherein the second positioning information includes at least one of the following information: time information corresponding to the second positioning information, speed information of the second terminal device, movement direction information of the second terminal device, or location information of the second terminal device.

30. A communications device configured to perform a method according to any one of claims 1 to 8 and claims 23 to 29.

31. A communications device configured to perform a method according to any one of claims 9 to 22.

32. 1. A communications device including a processor, the processor coupled to a memory; 30. A communications device, wherein the processor is configured to execute computer programs or instructions stored in the memory to enable the communications device to perform a method according to any one of claims 1 to 8 and claims 23 to 29.

33. 1. A communications device including a processor, the processor coupled to a memory; A communications device, wherein the processor is configured to execute computer programs or instructions stored in the memory to enable the communications device to perform a method according to any one of claims 9 to 22.

34. 30. A computer readable storage medium storing a computer program or instructions, which when executed on a computer enables the computer to carry out a method according to any one of claims 1 to 29.

35. A computer program comprising instructions which, when executed on a computer, enable the computer to carry out a method according to any one of claims 1 to 29.

Images