140 results about "Transport medium" patented technology

An example device for retrieving media data includes: a memory configured to store media data; and a processing system implemented in circuitry, the processing system being configured to: calculate a cumulative size of packets of a protocol data unit (PDU) Set received from a source device; determine a signaled size for the PDU Set; calculate a ratio between the cumulative size and the signaled size; and send data representative of the ratio to the source device.

The invention belongs to the technical field of wireless communication, and relates to a surface-mountable micro-coaxial ultra-wideband Lange coupler, which comprises a metal shell, a first metal inner core is positioned in the metal shell, and the first metal inner core is provided with a first connecting terminal, a second connecting terminal, a third connecting terminal and a fourth connecting terminal; the transmission medium is filled between the metal shell and the first metal inner core; the rectangular micro coaxial line board-level integrated transition structure comprises an input port, a straight-through port, a coupling port and an isolation port which are arranged on the first side surface of the metal shell and are respectively connected with a first connecting terminal, a second connecting terminal, a third connecting terminal and a fourth connecting terminal in a one-to-one correspondence manner; the defected ground structure is arranged on the second side face of the metal shell, and the second side face and the first side face are oppositely arranged. The millimeter wave three-dimensional antenna works in a millimeter wave frequency band, has a space three-dimensional structure, is high in coupling degree, low in loss, high in reliability, short in design period and low in economic cost, can realize board-level integration, and widens the application range.

The invention relates to the technical field of multi-network connection, in particular to a Raman optical fiber amplifier remote monitoring system based on multi-network connection. Multiple different network connection modes are achieved through the multiple network connection units, flexible transmission and remote monitoring of data are achieved, a proper network interface can be automatically selected for data transmission according to the current network environment, and the flexibility and stability of network connection are guaranteed. According to the method for packaging the data frames of the different network media on the data link layer, the integrity and effectiveness of the data on the different transmission media are ensured, the system complexity is reduced, and the data transmission efficiency and the system response speed are improved. Especially in a multi-network connection environment, the optimized data link layer processing module can effectively reduce data delay and improve the real-time monitoring capability of the system. Wide area network transmission of data is realized through an MQTT protocol, and safe transmission and real-time monitoring of remote data are ensured.

An apparatus may include a physical layer (PHY), a reconciliation sublayer (RS), a Media Access Control layer (MAC), and a logic circuit. The may interface with a shared transmission medium of a network. TheRS may support Physical Layer Collision Avoidance (PLCA), and the circuit may send a request to register a node with a network, and derive a node identifier for use by the PLCA RS to determine transmit opportunities, wherein the node identifier is at least partially derived from the node's position in a table of registered nodes in the network received in response to the registration request.

An example first user equipment (UE) device for communicating media data includes: a memory configured to store media data; and a processing system implemented in circuitry and configured to: establish a media communication session with a second UE device; request that an intermediate network device perform one or more media processing tasks on media data destined for the second UE device and originating from the first UE device, the intermediate network device being between the first UE device and the second UE device; and send the media data of the media communication session destined for the second UE device to the intermediate network device to cause the intermediate network device to perform the one or more media processing tasks on the media data.

Systems, methods, and devices improve medium usage of wireless devices. Methods include determining, using one or more processors, multiple protection frames should be used for a first wireless radio and a second wireless radio based, at least in part, on an interference parameter, wherein the first wireless radio and the second wireless radio are collocated in a same wireless device. Methods also include determining, using the one or more processors, one or more transmission parameters associated at least one of the wireless radios, the one or more transmission parameters representing a first duty cycle of the first wireless radio and a second duty cycle of the second wireless radio. Methods further include determining, using the one or more processors, a number of protection frames and a protection frame duration based, at least in part, on the one or more transmission parameters.

The invention provides a pipe network multi-robot cooperative fault positioning method, system and device and a storage medium, and relates to the technical field of intelligent detection, and the method comprises the steps: obtaining pipe network state data sent by a plurality of robots deployed in a pipe network, and determining a fault region corresponding to abnormal data when the abnormal data exists in the pipe network state data; the first robot is controlled to inject a detection signal into the pipe network, and a first signal sent by the second robot after receiving the detection signal and a second signal sent by the third robot after receiving the detection signal are obtained; determining an initial fault position in the fault area by combining the first signal and the second signal; obtaining physical characteristic parameters of the pipe network and medium parameters of a transportation medium in the pipe network; and on the basis of the initial fault position, a target fault position is determined in combination with the physical characteristic parameters and the medium parameters. The method has the technical effect that the fault positioning precision in the complex pipe network environment is improved.

The invention discloses a satellite-borne integrated X-band communication network construction method and system based on the SIP technology, and belongs to the field of network communication, and the method comprises the steps: constructing a bottom layer link, employing an X-band as a transmission medium of a physical layer, and carrying out the communication between a satellite and a ground station through an X-band frequency; a network layer protocol is connected with an X-waveband communication link, and a ground SIP proxy server is arranged in a ground receiving end and used for managing SIP protocol butt joint with satellites and supporting signal scheduling, resource allocation and state monitoring. Link quality data and a route forwarding strategy are combined, and dynamic route forwarding rule selection based on link quality is achieved; and according to a link interconnection and routing forwarding strategy, configuring an IP routing forwarding rule of a satellite-ground link and an inter-satellite link, and constructing a space-ground integrated communication network. According to the invention, a link quality monitoring function is added in the SIP protocol stack, so that dynamic bandwidth allocation is realized.

A system for wireless power transmission is disclosed, and includes a plurality of UAVs, each having a transfer medium reservoir, an onboard power conversion unit, a communication module, a navigation module, a power delivery interface, and at least one sensor. Each UAV is configured to interface with a transfer medium source, receive a chemical power transfer medium into the transfer medium reservoir, fly to a target area containing a power recipient having a power demand, identify and land within a landing zone, provide chemical power transfer medium to an endpoint power conversion, and evaluate at least one directive to decide what action to take based on feedback. The system also includes a fleet control system communicatively coupled to the plurality of UAVs and configured to operate the plurality of UAVs as a swarm, generate at least one directive, and distribute the directive to the communication module of each UAV.

Embodiments described herein are generally directed to a flexible mechanism for performing low latency and deterministic node failure detection. In an example, an agent, running on a monitor node of a distributed system, receives from a process, running within a user space of an operating system (OS) of the monitor node, a request to send a probe to a monitored node of the distributed system. The agent is interposed between a networking stack of a kernel of the OS and a transmission media coupling the nodes in communication. The agent causes the probe to be transmitted to the monitored node via the transmission media at a time specified by the request utilizing a time-based packet scheduling feature of a network interface associated with the monitor node. When a time period elapses prior to receipt of a response to the probe, the agent notifies the process of a failure relating to the monitored node.

The invention discloses a long-distance port expansion device based on a multi-port PHY chip, and the device comprises a near-end device which is integrated with a multi-channel serial interface supporting a multi-port protocol; the remote equipment comprises at least one PHY (Physical Layer) chip, and the PHY chip is provided with an uplink multi-channel protocol interface supporting a multi-port protocol and is provided with a plurality of downlink network ports; and the multi-channel serial interface of the near-end equipment is connected with the uplink multi-channel protocol interface of the PHY chip through a long-distance transmission medium. According to the invention, the port access and data forwarding functions of a traditional switch (including a switch realized by a switch chip or a processor) are directly replaced by the far-end multi-port PHY, and the method is suitable for various network communication scenes sensitive to network cost, time delay and architecture complexity.

A method for detecting a failure in a slot-based random-access procedure of a wireless device (14a, 14b, 14c; 14), preferably an ambient IoT (Internet of Things) device, in a communication network (10), wherein the method (100) comprises: - Transmitted, by the wireless device (14a, 14b, 14c; 14), a first message of the random access procedure to a node (12) of the communication network (10), wherein the first message comprises a random value and / or device identification information, for requesting access to a transmission medium of the communication network (10), preferably for requesting transmission resources from the node (12); and - Detect, by the wireless device (14a, 14b, 14c; 14), a failure of a random access procedure when no response to the first message is received by the wireless device (14a, 14b, 14c; 14) within a period of time represented by a defined number of slots.

A coal mine deep well hoist communication system and method based on intelligent metasurface assistance, the system comprises an Internet of Things device, an edge computing node, a cloud server and an intelligent metasurface, the Internet of Things device comprises a tension sensor, a weighing sensor and an acceleration sensor; the tension sensor, the weighing sensor and the acceleration sensor are connected with the edge computing node through the intelligent metasurface, and the edge computing node is connected with the cloud server through a wired transmission medium. The method comprises the following steps: arranging the intelligent metasurface and constructing an intelligent communication system; modeling the energy loss and the calculation time delay in the calculation offloading process of the intelligent communication system; constructing a comprehensive benefit function integrating the energy efficiency and the calculation time delay; taking the maximization of the comprehensive benefit function as the optimization target of the calculation offloading strategy; constructing a security reinforcement learning model; and realizing the optimal calculation offloading benefit. The system and method can ensure the stability of the wireless data link inside the hoist and improve the transmission efficiency of data.

A system for wireless power transmission is disclosed, and includes a plurality of UAVs, each having a transfer medium reservoir, an onboard power conversion unit, a communication module, a navigation module, a power delivery interface, and at least one sensor. Each UAV is configured to interface with a transfer medium source, receive a chemical power transfer medium into the transfer medium reservoir, fly to a target area containing a power recipient having a power demand, identify and land within a landing zone, provide chemical power transfer medium to an endpoint power conversion, and evaluate at least one directive to decide what action to take based on feedback. The system also includes a fleet control system communicatively coupled to the plurality of UAVs and configured to operate the plurality of UAVs as a swarm, generate at least one directive, and distribute the directive to the communication module of each UAV.

A method for initiating a random access procedure of a wireless device (14a, 14b, 14c; 14), preferably an ambient Internet of Things (IoT) device (14a, 14b, 14c; 14), in a communication network (10), the method (100) comprising: - Receiving, by the wireless device (14a, 14b, 14c; 14), a trigger message transmitted from a node (12) or a further node (16) of the communication network (10) for triggering the transmission of a first message of the random access procedure, - Determining, by the wireless device (14a, 14b, 14c; 14), in response to the received trigger message, whether a condition for transmitting the first message is fulfilled; and - Transmitting, by the wireless device (14a, 14b, 14c; 14), the first message to the node (12) based on a result of the determining, wherein the first message comprises a random value and / or a device identification information for requesting access to a transmission medium of the communication network (10), preferably for requesting transmission resources from the node (12).

Described herein is a network that uses a high priority enhanced distributed channel access (HiP EDCA) policy. A wireless access point includes one or more memories and one or more processors communicatively coupled to the one or more memories. The one or more processors, individually or collectively, perform an operation that includes broadcasting a message comprising a portion of a HiP EDCA policy of the wireless access point and providing a user device access to a transmission medium using HiP EDCA according to the HiP EDCA policy.

An apparatus comprising: an input for receiving a stream comprising a plurality of data transmission units; a filter configured to identify, in the stream, at least one data transmission unit having control data of a predetermined type and remove said control data to generate a second stream; a protocol module configured to receive said second stream and identify, in the second stream, at least one data transmission unit of a predetermined type and add protocol information to the at least one data transmission unit; and wherein the removal of said control data provides time in said second stream for the addition of the protocol information; and wherein the apparatus includes a transceiver configured to output signals representative of said data transmission units of the second stream with said protocol information added to a transmission medium.

To provide a conveying device that can stably transport media. [Solution] The system comprises a media transport unit 23 for transporting a medium 15, a first drive unit 22 for driving the media transport unit 23, a media supply unit 29 for supplying the medium 15 toward the media transport unit 23, a second drive unit 28 for driving the media supply unit 29, a tension bar 31 positioned in the transport path between the media transport unit 23 and the media supply unit 29, swinging in a first direction D1 and a second direction D2 to apply tension to the transported medium 15, a third drive unit 38 for swinging the tension bar 31, a measuring unit 33 for measuring the output of the third drive unit 38 when moving the tension bar 31, and a control unit 26. The measuring unit 33 measures the first output of the third drive unit 38 when moving the tension bar 31 in the first direction D1 and the second output of the third drive unit 38 when moving the tension bar 31 in the second direction D2. The control unit 26 controls the third drive unit 38 based on the measurement results of the measuring unit 33.

Systems and methods for compression and decompression between elements of a wireless communications system (WCS) such as a distributed antenna system (DAS) contemplate performing a fast Fourier transform (FFT) operation before compression and transmission across a transport medium in a DAS. Further, a size of an FFT block may be varied based on latency requirements. For example, the FFT block size may be based on a sampling rate extracted from channel information. By selecting the FFT block size to meet latency requirements, overall throughput across the transport medium may be increased.

The invention relates to the field of resource allocation methods of communication systems, in particular to a distributed RIS-assisted millimeter wave communication optimization method based on adaptive information theory fusion, which comprises the following steps: constructing a distributed RIS-assisted millimeter wave communication optimization system; calculating LOS path loss based on a random positioning obstacle; calculating RIS path loss based on the attenuation characteristic of the transmission medium; estimating the outage probability of the system based on an adaptive information theory fusion algorithm, and calculating the overall loss of the system by taking the outage probability as a communication performance index; according to the method, the loss model of each path is refined, the influence of random shielding is quantified according to the actual situation, the loss model is divided into single-path shielding calculation, and transmission medium absorption attenuation and obstacle shielding loss are combined into a unified attenuation item in combination with a scene for processing multi-path shielding, so that the modeling complexity of multi-factor superposition is simplified.

To provide a medium conveyance device capable of improving alignment accuracy by detecting a width size of each conveyed medium by a plurality of detecting means in a medium aligning mechanism provided in the medium conveyance device.SOLUTION: A medium processing device includes: conveyance means for conveying a sheet-like medium; medium edge part detection means for detecting a width edge part position of the medium being conveyed; and control means for changing conveyance control of the medium in accordance with the detected width edge part position, wherein the medium edge part detection means is plural and individually detects positions of both width end parts of the medium being conveyed.SELECTED DRAWING: Figure 4

The present disclosure relates to a system for inspecting a component, such as a semiconductor component or a unit under test (UUT). The system may include a transport media transport system that can be adjusted to accept transport media of different sizes to achieve a universal design, capable of manipulating various transport media that would otherwise require manual operation or multiple inspection systems. The system may include an inspection system to inspect the UUT and a positioning system to move the transport media from the dispenser to the inspection system. The system may include a transport media alignment system for orienting and aligning transport media and UUT to an inspection system. The system described herein may enable faster and more accurate UUT placement, thereby improving the inspection process and the quality of the final product.

The invention relates to an industrial data acquisition system, method and device based on an SD-WAN communication technology. The system comprises an edge layer module, a network physical layer module and a control layer module, the edge layer module comprises at least one edge layer; the control layer module comprises a data acquisition server unit, a first client device unit, a core switch unit, an SD-WAN controller unit, a firewall protection unit, an optical network unit and a mobile terminal APP unit. The network physical layer module comprises a transmission medium unit and a matched connection equipment unit; the edge layer module comprises a second client device unit, an edge switch unit, an edge data acquisition terminal unit and a device layer unit; and the management and control layer module is connected with the edge layer module through the network physical layer module. By adopting the system, the communication delay of the industrial data in the transmission process can be reduced, the data transmission stability is improved, and the data security is improved.

This invention discloses a method and apparatus for long-distance information transmission based on a wired transmission medium. The method includes: obtaining a set of historical transmission information; the set of historical transmission information includes several sequences of historical transmission information; modeling the wired transmission medium based on the set of historical transmission information to obtain transmission feature information; and performing transmission processing on the information to be transmitted based on the transmission feature information.

The invention discloses a large-scale heterogeneous local power communication network routing and resource scheduling method based on hybrid experts, and the method comprises the following steps: S1, building a large-scale heterogeneous local communication network routing and resource scheduling optimization problem according to the differentiated QoS demands of services for the data transmission rate, time delay and reliability, a transmission path of each service and a transmission medium, a channel and a data modulation mode on the path are jointly optimized, and the minimum difference between the performance required by the service and the network supply performance is achieved. And S2, based on a hybrid expert algorithm, solving the routing and resource scheduling optimization problem established in the step S1, and obtaining a transmission path of each service, a transmission medium on the path, a channel, a data modulation mode scheme and a performance supply and demand difference minimum value.

Disclosed herein is a method and a system for sharing broadcast source information during an audio broadcast session. The method includes determining, by a sender device, whether the broadcast source information associated with the audio broadcast session is to be shared with at least one receiver device based at least on a user input from a user of the sender device and a request from the at least one receiver device. The method further includes selecting, by the sender device, a transmission medium for sharing the broadcast source information in response to determining that the broadcast source information is to be shared with the at least one receiver device. Further, the method includes transmitting, by the sender device, one or more data packets comprising the broadcast source information over the selected transmission medium.

An example device for transporting media data includes: a memory configured to store media data; and one or more processors implemented in circuitry and configured to: determine that a manifest file for a media presentation includes data representing a delta time value for a resynchronization element of a segment of the media presentation; determine a multiple of the delta time value; determine a number of chunks of the segment that are currently available for retrieval using the multiple of the delta time value; send a request to a server device for the chunks of the segment that are currently available, wherein the request omits chunks of the segment that are not currently available; and store data of chunks received in response to the request in the memory.

A method for detecting a failure in a slot-based random access procedure of a wireless device (14a, 14b, 14c; 14), preferably an ambient Internet of Things (IoT) device, in a communication network (10), the method (100) comprising: - Transmitting, by the wireless device (14a, 14b, 14c; 14), a first message of the random access procedure to a node (12) of the communication network (10), wherein the first message comprises a random value and / or a device identification information for requesting access to a transmission medium of the communication network (10), preferably for requesting transmission resources from the node (12); and - Detecting, by the wireless device (14a, 14b, 14c; 14), a failure of the random access procedure, if no response to the first message is received by the wireless device (14a, 14b, 14c; 14), within a period represented by a defined number of slots.

A wireless access point includes a first sublayer and a second sublayer. The first sublayer may be operable to perform first operations in accordance with a first standard. The first standard may be associated with the wireless access point. The second sublayer may be communicatively coupled to the first sublayer and may include a protocol stack and an adaptive layer. The protocol stack may be operable to perform second operations in accordance with a second standard and may be operable to interface with a transmission medium to facilitate data transmissions between the wireless access point and a device. The adaptive layer may facilitate communications between the protocol stack and the first sublayer.

Embodiments provide efficient delivery of multiple media channels to in-transport terminals, for example, to reduce channel zapping delay in a bandwidth efficient manner. For example, an in-transport media (ITM) server can distribute multiple channel offerings to ITM clients in a transport craft. Meanwhile, the ITM server can monitor which channel offerings are presently being consumed via the ITM clients, and can transmit feedback to a remote media server, accordingly. Based on the feedback, the ITM server can receive the channel offerings from the remote media server, in such a way that one or more of the channel offerings is received as a low-fidelity instance when not presently being consumed via any of the ITM clients, and one or more of the channel offerings is received as a high-fidelity instance when presently being consumed via at least one of the ITM clients.