135 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.

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.

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.

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.

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.

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 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.

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.

A method includes receiving, by a first user equipment (UE), a first message from a second UE, the first message including an indication of a multi-hop relay request and a first criterion for communicating via a multi-hop relay. A determination is performed to transmit the first message to a third UE. At least one of the second criteria is generated, and the first message is updated with the at least one of the second criteria and performance information of the first UE and transmitted to the third UE. And the first UE receives a second message, the second message comprises information related to the multi-hop relay to be established, the information related to the multi-hop relay to be established comprises performance information of the third UE and first selection information related to the multi-hop relay to be established, and the second message is updated and transmitted to the second UE.

The invention relates to the technical field of communication, in particular to a relay communication method and device. In a multi-hop relay scene, under the condition that an intermediate relay UE (User Equipment) knows that a serving cell of the intermediate relay UE is different from a serving cell of a U2N relay UE, the serving cell can be updated from a first serving cell to a second serving cell. Or, in the discovery process, the intermediate relay UE can select the relay UE in the same service cell as the intermediate relay UE as the U2N relay UE of the remote UE. Therefore, the intermediate relay UE and the U2N relay UE are in the same service cell, link management of multi-hop relays is facilitated for a network, and network performance is improved.

This invention discloses a joint early warning system and method for toxic and harmful gases and abnormal personnel posture in underground mines, belonging to the field of mine safety monitoring. The system includes an underground wearable terminal, monitoring substations, a hierarchical data processing unit, an early warning execution unit, and a ground monitoring terminal. The wearable terminal integrates environmental perception, posture detection, vital sign collection, and low-power wireless self-organizing network communication modules, simultaneously collecting underground environmental, personnel movement, and physiological data. The data processing unit performs time-series filtering, correlation analysis, and hazard matching on multi-source data, intelligently distinguishing between underground scenarios and human vital signs to differentiate between emergencies, sensor drift, and normal operations. Communication supports multi-hop relay, with 72 hours of timestamped data buffered during network outages and automatic resume transmission upon network connection. The terminal is intrinsically safe and explosion-proof, equipped with a backup power supply, and adaptable to extreme underground working conditions. This invention is not a simple functional aggregation, but possesses significant inventiveness, is compliant with relevant laws, and has complete and undefended rights protection, making it applicable to various types of underground mine monitoring and early warning of accidents.

The application discloses an indoor inspection signal enhancement system based on a multi-unmanned aerial vehicle dynamic relay network, comprising: an inspection path planning module, which is used for determining a planned inspection path of an unmanned aerial vehicle and calculating an equivalent communication path length; a relay demand prediction module, which is used for determining the number of relay unmanned aerial vehicles required by an inspection task; a multi-hop relay link construction module, which is used for generating relay deployment control instruction parameters according to the number of relay unmanned aerial vehicles and building structure data; a relay position adjustment module, which is used for periodically collecting link quality indicators and adjusting the hovering position of the relay unmanned aerial vehicle; a data forwarding path selection module, which is used for selecting a neighbor node for next-hop forwarding of the relay unmanned aerial vehicle; and a relay stable regulation and control module, which is used for route reconstruction, standby relay intervention and relay deployment correction. The application effectively improves the reliability, network stability and system robustness of indoor inspection communication, reduces the demand for manual intervention, and enhances the engineering practicability of the multi-unmanned aerial vehicle indoor inspection system.

The present application provides a communication method and apparatus, and a system, which are applied to the technical field of communications. The communication method provided in the present application enables a terminal device to switch from an original communication link to accessing a network by means of a multi-hop relay path. Embodiments of the present application use the following technical solution: a first terminal device acquires first information, wherein the first information indicates a first path, the first path comprises a plurality of relay terminal devices, and the first path is used for the first terminal device to access a network device by means of the plurality of relay terminal devices; and the first terminal device sends second information to the first network device, wherein the second information indicates the quality of a first link, and the first link is a link between two adjacent relay terminal devices in the first path.

The present application relates to the technical field of digital information transmission, and provides an RFID data acquisition method, device and medium. The method comprises the following steps: a fixed reader / writer broadcasts a tag inventory instruction to a storage area; the fixed reader / writer receives a backscattering signal of an RFID tag in response to the tag inventory instruction, extracts a tag ID from the backscattering signal, and binds the tag ID with an access node identifier receiving the signal; an edge computing device constructs an access communication topology comprising a master reader / writer, a relay reader / writer and an RFID tag; all RFID tags are divided into direct connection acquisition groups, single-hop relay acquisition groups and multi-hop relay acquisition groups; different radio frequency acquisition parameters are configured for different acquisition groups, and the master reader / writer and the corresponding relay reader / writer read the business data stored by the corresponding RFID tags in batches according to the groups, so that the success rate and reading speed of a single inventory are significantly improved.

A method for wireless communication at a first relay user equipment (UE) includes receiving a first message initiating a quality of service (QoS) flow for a remote UE associated with a multi-hop relay network, the multi-hop relay network including a group of UEs, the group of UEs including at least a first relay UE, a second relay UE, and the remote UE. The method further includes transmitting a first PC5 message to a second relay UE in accordance with receiving the first message, the first PC5 message indicating the E2E PC5 QoS profile, the modified E2E PC5 QoS profile, or the modified E2E PC5 QoS profile and a first per-hop QoS profile between the first relay UE and the second relay UE. The method also includes receiving a second PC5 message from a second relay UE, the second PC5 message indicating an acknowledgement of receiving the first PC5 message.

The invention provides an information transmission method and device, a terminal and equipment, and the method comprises the steps: transmitting a first message to target equipment on a multi-hop relay link; the first message comprises first information, and the first information comprises at least one of the following items: an identifier of the first remote terminal; a local identifier of the first remote terminal; an identifier of a second remote terminal; multi-hop path identification information; hop count identification information in the first transmission direction; the combination of the identifier of the first far-end terminal and the identifier of the target communication opposite terminal of the first far-end terminal; and the network device allocates terminal identification information to the first remote terminal. According to the scheme, communication processing can be carried out in time when the link of the relay terminal goes wrong in a multi-hop relay scene, the communication interruption time is shortened, and the user experience is improved.