182 results about "Multi hop relay" patented technology

The invention discloses a topographic surveying and mapping method and system based on unmanned aerial vehicle cluster collaboration, and belongs to the technical field of unmanned aerial vehicle cluster collaboration topographic surveying and mapping, and the method comprises the following steps: a ground control center plans a flight route for each unmanned aerial vehicle in a cluster according to the topography and precision requirements of a surveying and mapping area, a theoretical processing sequence of data of each unmanned aerial vehicle is calculated in advance; and the unmanned aerial vehicle cluster autonomously takes off to a predetermined airspace according to the instruction, and dynamically establishes a multi-hop relay communication network based on a mobile ad hoc network technology in a flight surveying and mapping process so as to evaluate and use the fastest signal transmission path. Through the combination of the steps, the data processing and transmission efficiency is improved, reliable communication and collision prevention are guaranteed, weather interference can be dealt with, and efficient and accurate topographic surveying and mapping are achieved.

The invention provides a water area monitoring system for cooperative operation of an unmanned aerial vehicle and an unmanned ship based on a Mesh ad hoc network. The water area monitoring system comprises the unmanned aerial vehicle, the unmanned ship, a Mesh ad hoc network module, a cooperative control system and a shore end control system, according to the unmanned plane, wide-area patrol and image acquisition, airspace and wide-area water area information is acquired through a sensor, fixed-point acquisition and water area information acquisition are realized through an unmanned ship, and data interaction is realized by relying on nodes of a Mesh ad hoc network. Through the multi-hop relay and dynamic routing technology of the Mesh ad hoc network, autonomous and reliable communication in a scene without a fixed base station is realized, and the communication coverage range and survivability are improved; on the basis of distributed task allocation and real-time data interaction, the equipment cooperation efficiency is remarkably improved, the response delay is shortened, and efficient completion of tasks in a complex environment is guaranteed.

A first wireless relay device receives, from a wireless device, a message, indicating an address of the wireless device for multihop relaying, wherein the wireless device connects to a second wireless relay device via the first wireless relay device and using the multihop relaying, and a device identifier of the wireless device. The first wireless relay device sends to the second wireless relay device and based on the receiving, one or more parameters comprising the address and the device identifier.

The invention discloses an unmanned aerial vehicle group temporary communication network construction method based on visual self-organization. The method comprises the following steps: establishing an unmanned aerial vehicle node system and a security audit management system to realize flight control and message encryption exchange; airborne perception is realized through a visual candidate site identification system, and multi-modal data fusion and site scoring are carried out; domain autonomy and weighted election are realized by using a distributed voting and election system, and relay nodes are determined; scheduling, monitoring and self-adaptive reconstruction of a multi-hop path are completed based on a multi-hop relay and route maintenance system; and target detection, positioning and emergency document reporting are executed through the search and rescue positioning and situation return system. According to the method, voice and data links can be quickly recovered when ground communication facilities are damaged or unavailable, and under the condition of limited communication and energy, an unmanned aerial vehicle group can autonomously identify a safe position in a distributed manner and negotiate to establish a reliable multi-hop communication network, so that emergency rescue and positioning services are supported.

A user equipment (UE) is configured to receive a discovery message associated with UE-to-network relayed communication, determine a multiple hop discovery based at least on the discovery message; and verify the discovery message, wherein the discovery message is at least integrity protected. A UE is configured to determine a multiple hop path for UE-to-network relayed communication; and perform a security procedure for the UE-to-network relayed communication via the multiple hop path including a donor relay UE and at least one intermediate relay UE between the UE and a wireless network.

The invention relates to the technical field of robot equipment, and particularly discloses a micro reconnaissance robot system for networking communication, which comprises a multi-hop relay module, an intelligent routing module, a distributed data transmission module and a self-adaptive spectrum management module, the multi-hop relay module is characterized in that each robot node has autonomous networking capability, the networking time is less than or equal to 10 seconds, and the intelligent routing module is connected with the distributed data transmission module; according to the micro reconnaissance robot system, a hybrid communication protocol (Wi-Fi Mesh + LoRa) is adopted, multi-hop relay transmission in a non-line-of-sight (NLOS) environment is supported, an optimal relay path is automatically selected in the non-line-of-sight (NLOS) environment, transmitting power is dynamically adjusted, networking communication is achieved, the deployment limitation caused by dependence on fixed relay equipment is overcome through a multi-hop relay module, and the reliability of the system is improved. The problems of high power consumption and volume increase caused by high transmitting power are solved by utilizing intelligent routing and dynamic power adjustment, meanwhile, the defect of poor transmission diffraction capability of high-frequency-band millimeter waves is avoided, and the communication reliability and flexibility of the miniature reconnaissance robot in a complex environment are remarkably improved.

The invention relates to the technical field of automatic driving, in particular to an Internet of Vehicles resource allocation method and system based on communication optimization in an automatic driving scene, and the method comprises the steps: forming a plurality of clusters by vehicle nodes in the coverage range of the same road side unit, when communication is needed, a plurality of candidate multi-hop relay paths from a source cluster head node to a target node are generated, and the relay path with the optimal transmission efficiency is selected as the optimal relay path; a joint resource allocation model is constructed and solved by taking maximization of the total network throughput as a target, and a resource allocation decision for each hop of link on the optimal relay path is generated; each cluster head node receives and confirms the resource allocation decision, and performs secondary allocation and local configuration on the obtained resources; and after configuration confirmation of all related cluster head nodes is received, multi-hop relay communication connection from the source cluster head node to the target node is established along the optimal relay path. And the stability, reliability and efficiency of Internet of Vehicles communication are improved.

A multi-room audio synchronous playback method, a system, a device and a storage medium are provided. The multi-room audio synchronous playback method includes: creating an ad-hoc network using a plurality of audio devices supporting a target wireless communication protocol via point-to-point connection, the ad-hoc network covering a plurality of rooms, the target wireless communication protocol operating at a frequency band of 5 GHz to 7 GHz; dynamically analyzing link quality to select an optimum transmission path, and dynamically optimizing a network topology of the ad-hoc network via multi-hop relay; transmitting target audio data between the audio devices of the ad-hoc network based on the optimum transmission path, and performing real-time interaction and dynamic compensation based on a synchronization signal to obtain a synchronization parameter; and controlling each audio device of the ad-hoc network based on the synchronization parameter to synchronously play the target audio data.

The invention relates to the technical field of unmanned aerial vehicle communication encryption, and discloses a data encryption transmission system based on unmanned aerial vehicle communication. The system comprises an airspace situation awareness module, a channel feature coding module, a hierarchical encryption engine module, a key dynamic derivation module and an anti-interference relay module. The airspace situation awareness module collects electromagnetic spectrum characteristics through a multispectral sensor array to generate a dynamic spectrum fingerprint spectrum; a channel feature coding module extracts multi-dimensional channel parameters, and generates a matched chaotic mapping sequence in combination with a quantum random number generator; the hierarchical encryption engine module segments the original data stream and executes differential round hierarchical nonlinear transformation; the key dynamic derivation module generates a composite session key drifting along with time according to the flight path coordinates; the anti-interference relay module is embedded with a frequency spectrum fingerprint watermark, and a multi-hop relay link is established through adaptive beam forming. The system can adapt to the dynamic flight scene of the unmanned aerial vehicle, and guarantees the safety and stability of communication data transmission.

Network-initiated QoS handling for multi-hop U2N relay operation is described. An apparatus is configured to obtain a hop count for a relay path between a remote UE and a first relay UE of a set of relay UEs. The hop count is associated with a QoS profile for a QoS flow. The relay path comprises the set of relay UEs between the remote UE and a network node. The apparatus is configured to provide a first indication of the hop count. The hop count is further associated with a set of PCC rules of a service data flow SDF.

The invention relates to the technical field of electroplating wastewater treatment, and discloses an electroplating wastewater pollution early warning and regulation system based on Internet of Things, comprising: a sensing layer for collecting characteristic parameters of an electroplating wastewater treatment link through distributed sensing nodes, the characteristic parameters including a water quality parameter, an equipment operation parameter and an environmental parameter, a wireless communication module is arranged in the sensing node; the network layer is used for constructing a wireless communication network and transmitting the parameters acquired by the sensing layer to the application layer through a multi-hop relay; and the application layer receives and processes the parameters transmitted by the network layer to realize pollution early warning, pollution risk prediction and regulation and control instruction generation, and the regulation and control instruction is fed back to the execution layer through the network layer. By adopting a channel frequency hopping mechanism, when it is monitored that the interference intensity of a current communication channel exceeds a preset interference threshold value, the standby channel can be automatically switched, instruction transmission of an application layer and an execution layer is not interrupted, and it is guaranteed that data such as water quality parameters and equipment operation parameters collected by a sensing layer are continuously and stably transmitted to the application layer.

Managing relay communication in a wireless communication system that includes User Equipment (UE) 124, 161, 123, 122, 121 and a network including a base station, e.g. gNB 101. UE 123 receives a request 502 for establishing a connection to the UE 123 for multi-hop communication between a first UE 124 and a second UE 121, the request including maximum hop information indicating a value associated with a maximum number of hops between the first UE 124 and the second UE 121 supported by the first UE 124. Additionally, a relay UE 121 may receive a request for establishing a connection to the relay UE 121 for multi-hop communication between a first UE 124 and a base station, e.g. gNB 101, of the network via the relay UE 121, wherein the request includes network connection information for indicating the first UE 124 requests connection to the network.

A first wireless device receives, from a second wireless device, a message requesting link modification, for a multihop relaying service, comprising a first user information of a remote wireless device, wherein the remote wireless device connects to the first wireless device via the second wireless device and using multihop relaying. The first wireless device sends, to a session management function (SMF) associated with a protocol data unit (PDU) session of the multihop relaying service, a report message comprising the first user information of the remote wireless device.

The embodiments herein relate to method and apparatus for failure indication in a multi-hop sidelink relay. In some embodiments, there proposes a method (500) performed by a first wireless device (303) for in a relay path. The relay path links a source remote wireless device (301) to a network node (306) or a target remote wireless device through two or more relay wireless devices (302, 303, 304, 305). The method (500) comprises: detecting (S501) a failure in the relay path; and transmitting (S502) a message to one or more destinations (301, 302) in the relay path. The message includes failure information of the detected failure and path information of the relay path. With the embodiments, upon detection of link failure on either the sidelink (SL) or Uu link, the relay UE or remote UE detecting the link failure may indicate to a destination on the path, even for multi-hop relay (including multi-hop UE to network relay and / or multi-hop UE to UE relay).

Methods and apparatus for managing multi-hop relaying in a wireless communication system including a plurality of User Equipment, UE, and a network including a base station are disclosed. The method at a UE of the plurality of UEs includes: sending a message indicating a UE supports multi-hop relaying between a remote UE and a target node in the wireless communication system, the multi-hop relaying involving at least two relay UEs. For example, the message is sent as part of a discovery procedure.

The embodiment of the invention provides a wireless resource management method which is applied to first equipment, and a communication link where the first equipment is located comprises source terminal equipment, target equipment and a plurality of relay terminal equipment between the source terminal equipment and the target equipment. The method includes transmitting first information to a second device in a communication link over a radio resource control (RRC) connection, the first information being related to radio resource management. According to the method, a control plane process in a multi-hop relay scene is designed, and wireless resource management in the multi-hop relay scene is realized.

The application provides a kind of unmanned area overhead transmission line network coverage method, along the line deployment multiple as intelligent spacer intelligent network node, node uses modular hot plug structure, equipped with super capacitor and solid-state battery hybrid energy storage system;Through LoRa communication to build distributed wireless mesh ad hoc network, combined with TDMA time division multiple access and AODV adaptive routing protocol;Utilize the power supply of at least two different principle of multi-source fusion self-powered module power supply;Node collects line monitoring data and carries out edge computing processing, and the processed data is transmitted through multi-hop relay transmission of ad hoc network, and then transmitted to the center master station through the main and standby dual-link redundant transmission architecture.The application can realize long-term stable self-power supply and reliable communication of unmanned transmission line, improve the real-time performance of monitoring data transmission and network invulnerability.

The invention discloses an unmanned aerial vehicle ad hoc network identification and multi-hop relay method and system based on dynamic optimization of an HCAR. According to the method, a dynamic network topology is constructed and maintained through periodic beacon interaction between nodes; after a target unmanned aerial vehicle identification signal is received, evaluating the direct link quality with a ground control center, and if the direct link quality is lower than a threshold value, starting a multi-hop relay; the optimal next-hop node and the communication channel are jointly selected according to the real-time topology and the channel state through the HCAR algorithm, and data are forwarded to a ground control center hop by hop. According to the invention, through the dynamic collaborative optimization of the routing and the channel, the transmission stability and the spectrum efficiency in a high-density scene are improved; link interruption rapid detection and self-healing capabilities are provided, and data transmission continuity is guaranteed; energy state monitoring and dynamic deployment are combined, and outdoor long-term reliable operation is supported.

The invention relates to a relay communication method and device, and the method comprises the steps that a first communication device receives first indication information, and the first indication information is used for indicating multi-hop relay capability information of a second communication device; in the embodiment of the invention, based on the multi-hop relay capability information of the communication equipment, the multi-hop relay communication can be better supported, so that the communication reliability and the communication range are improved.

A communication apparatus in a multi-hop relay system in which a packet is transmitted and received using a flooding method in a first flooding slot and a second flooding slot each including a plurality of sub-slots, the communication apparatus performs: switching a frequency channel to be used to transmit and receive a packet between a first sub-slot and a second sub-slot in the first flooding slot; and not switching the frequency channel to be used to transmit and receive a packet within the second flooding slot, but switching the frequency channel to be used to transmit and receive a packet between a plurality of the second flooding slots.

Provided are methods for controlling a paging operation using a wireless relay technology by relay UEs providing a multi-hop relay operation in a sidelink network. The method may include receiving, from a child relay UE, a message for paging reception of a remote UE, transferring the same to a parent relay UE, receiving a paging record from the parent relay UE, and transferring the same to the child relay UE.

The invention relates to a discovery method and device of relay user equipment UE and a storage medium, and belongs to the technical field of communication. The method is applied to first relay UE, and the method comprises the following steps: receiving a discovery message; if the relay forwarding identifier represents that the end UE set allows the relay UE to forward, adding a user information identifier of the first relay UE in the first relay UE set; forwarding the discovery message added with the user information identifier of the first relay UE; wherein the discovery message at least carries one or more of the following parameters: an end UE set, and the end UE set comprises a user information identifier of the source end UE and a user information identifier of the destination end UE; a first relay UE set, wherein the first relay UE set comprises user information identifiers of relay UEs passing by from the source UE to the first relay UE in the relay UE discovery process; and the relay forwarding identifier is used for representing whether the end UE set allows the relay UE to forward or not. According to the invention, discovery of the multi-hop relay UE can be supported.

The present disclosure relates to communication methods, a first terminal, a second terminal, and a communication device and system. A communication method comprises: a first terminal sending a first message to a second terminal, wherein the first message comprises encrypted information, the encrypted information comprises encrypted first information, the first information is used for determining a path from the first terminal to the second terminal, and the first terminal is a terminal supporting a multi-hop U2N service or a terminal supporting a multi-hop U2U service. The embodiments of the present disclosure enable privacy protection for information in messages in a multi-hop U2N relay scenario and / or a multi-hop U2U relay scenario.

The application provides a relay state management method, device and terminal, and the method comprises the following steps: a first terminal activates and / or deactivates the relay function of the first terminal according to a first channel quality or first indication information; wherein, the first terminal is a terminal with a relay function, the first channel quality is the channel quality of a direct communication interface between the first terminal and a relay terminal, and the first indication information is sent to the first terminal by a network device or a relay terminal; the problem that the existing relay activation mechanism cannot be applied to the activation of a multi-hop sidelink relay is solved.

Provided in the present application are a communication method and apparatus, and a computer-readable storage medium. The communication method comprises: receiving a first notification message from a second device, the first notification message indicating a first link state; and, on the basis of the first notification message and / or a radio resource control (RRC) state of a first device, determining a second link state, and / or, on the basis of the first notification message and / or the RRC state of the first device, sending a second notification message, the second notification message being used for indicating a third link state. The present application provides a solution for determining and indicating a link state in a multi-hop relay scenario, thereby increasing communication efficiency in multi-hop relay scenarios.

The present disclosure relates to the technical field of communications, and in particular to a discovery method for a relay user equipment (UE), and an apparatus and a storage medium. The method is applied to a first relay UE, and comprises: receiving a discovery message; if a relay forwarding identifier represents that an end UE set allows a relay UE to perform forwarding, adding a user information identifier of the first relay UE to a first relay UE set; forwarding a discovery message to which the user information identifier of the first relay UE has been added, wherein the discovery message at least carries one or more of the following parameters: the end UE set, comprising a user information identifier of a source end UE and a user information identifier of a destination end UE; the first relay UE set, comprising user information identifiers of relay UEs between the source end UE and the first relay UE in the relay UE discovery process; and the relay forwarding identifier, used for representing whether the end UE set allows the relay UE to perform forwarding or not. The present disclosure can support the discovery of a multi-hop relay UE.

An intermediate relay terminal receives a first relay discovery announcement message from a parent terminal that is not PC5-S connected to the intermediate relay terminal. The first relay discovery announcement message comprises a first hop-count indicator indicating the parent terminal supports a multi-hop communication link to a cell and indicating a number of hops from the parent terminal to a cell. After determining that the intermediate relay terminal should transmit a second relay discovery announcement message, the intermediate relay terminal establishes a PC5-S connection with the parent terminal. After the PC5-S connection is established with the parent terminal, intermediate relay terminal transmits the second relay discovery announcement message comprising a second hop-count indicator that is the first hop indicator incremented by one.

The present disclosure provides methods, components, devices, and systems for ultra-high reliability techniques for coordinating medium access. More specifically, some aspects relate to access point (AP)-to-AP coordination via, for example, one or more management frames. In some implementations, a wireless communication device may coordinate timing information with one or more other APs, and may notify a set of stations (STAs) of the coordinated timing information, where a set of configured identifiers (IDs) may be used to distinguish which timing information is related to which AP, and notify the set of STAs of how the STAs are expected to resolve the coordinated timing information. Additionally or alternatively, a wireless communication device may exchange one or more common action frames to facilitate AP-to-AP coordination, where such one or more common action frames may specifically be associated with providing information related to coordinated medium access. In addition, the described techniques may be applicable to a multi-hop relay topology.

This UE comprises a transmission / reception unit and a control unit, and is a 5G ProSe multi-hop UE-to-network (U2N) relay UE. The transmission / reception unit receives, from a network, a management UE policy command message which includes a UE policy for the 5G ProSe multi-hop U2N relay UE. The UE policy includes a timer value. The control unit starts a timer using the timer value. The timer is for the UE policy. When the timer expires, the transmission / reception unit executes a UE request ProSeP provision procedure with respect to the network.