180 results about "Superframe" patented technology

The embodiment of the invention provides a data transmission method and a related device. Specifically, a transmitting end acquires a superframe comprising a plurality of subframes, the subframes comprising training symbols and pilot symbols. Wherein in one polarization direction, the number of the training symbols in the sub-frame is NTS, the number of the pilot symbols in the sub-frame is NPS, both the NTS and the NPS are integers greater than 1, the sum of the NTS and the NPS is an odd number, and the sum of the NTS and the NPS is greater than or equal to 5. One symbol in the subframe is both a training symbol and a pilot symbol, each training symbol and each pilot symbol are one of four complex numbers of-A-Aj,-A + Aj, A-Aj and A + Aj, and A is a real number. Every continuous NPG symbols in the subframe comprise one pilot symbol located at a fixed position, and NPG is 96 or 128. And further, the transmitting end transmits the superframe. It can be seen that the interval of inserting the pilot symbols in the sub-frame is larger, and redundancy is reduced. In addition, one symbol in the sub-frame is both a training symbol and a pilot symbol, so that the structure of the sub-frame is simplified.

The invention discloses an industrial multi-source heterogeneous data feature fusion and dynamic modeling method and system, and relates to the technical field of industrial multi-source heterogeneous data processing, and the system comprises a data collection module, an event triggering type local space-time alignment module, a time sequence data set generation module, a feature fusion module and an industrial equipment state model generation module. According to the method, an event-triggered local space-time alignment module is arranged, an event-driven dynamic space-time anchoring mechanism is adopted, and in a preset tolerant time window, an image feature time sequence is constructed through industrial camera superframe sampling to be matched with sensor time sequence data, so that feature dislocation caused by sampling frequency difference is avoided; compared with an existing interpolation method, the non-linear coupling relation between the process parameter data and the sensor time sequence data is obtained, and the problem of feature fusion distortion caused by the time granularity difference is solved by performing non-linear interpolation on the process parameter data through Gaussian process regression and generating a continuous proxy curve synchronous with the sensor time sequence data.

In examples, a vehicular battery management system (BMS) comprises a set of battery cells and a secondary network node coupled to the set of battery cells. The secondary network node is configured to measure a parameter in the set of battery cells and generate a packet containing the parameter. The packet indicates a number of super frame slots that have elapsed from a start time of a super frame to the generation of the packet. The secondary network node is configured to wirelessly transmit the packet within the super frame to a primary network node. The primary network node is configured to wirelessly receive the packet and to determine a time at which the secondary network node generated the packet based on the indication, a time duration of each slot in the super frame, and the start time of the super frame.

The embodiment of the invention provides a data transmission method for optical communication and a related device, and solves the problem that a transmission symbol sequence in the prior art cannot be suitable for scenes above 800Gbps. Specifically, a transmitting end acquires a superframe comprising a plurality of subframes, the subframes comprising pilot symbols. Wherein in one polarization direction, the number NPS of pilot symbols in the sub-frame is an even number greater than 0, each pilot symbol is one of four complex numbers, namely-A-Aj,-A + Aj, A-Aj and A + Aj, A is a real number, every continuous NPG symbols in the sub-frame comprise a pilot symbol located at a fixed position, NPG is 96 or 128, the superframe comprises a first type of sub-frame, and the sub-frame comprises a second type of sub-frame. The first type of subframes further comprise NFAW frame synchronization symbols, each frame synchronization symbol is one of four complex numbers including-AFAW-AFAWj,-AFAW + AFAWj, AFAW-AFAWj and AFAW + AFAWj, the AFAW is a real number, and the NFAW is an even number. And further, the transmitting end transmits the superframe. It can be seen that the interval of inserting the pilot symbols in the sub-frame is larger, and redundancy is reduced.

The invention provides a satellite signal transmitting method, device and equipment and a computer storage medium, and the method comprises the steps: determining a target first signal and a target satellite through signal quality evaluation parameters of a plurality of first signals received by first ground equipment, and then carrying out the transmission of a satellite signal based on a pseudo-range of the target first signal and an error correction parameter of the target satellite, calculating the downlink transmission time of the second signal, then obtaining the receiving moment when the first ground equipment receives the target first signal, calculating the theoretical emission moment of the second signal based on the receiving moment and the downlink transmission time of the second signal, and obtaining the superframe duration and the theoretical emission moment of the second signal; and calculating the first uplink transmission time delay when the second ground equipment transmits the third signal to the target satellite, and finally adjusting the actual transmission time of the third signal of the second ground equipment according to the first uplink transmission time delay, so that the actual transmission time of the third signal is aligned with the theoretical transmission time of the second signal, thereby improving the transmission success rate of the satellite signal.

The embodiment of the invention provides a data transmission method for optical communication and a related device. Specifically, a transmitting end acquires a superframe comprising a plurality of subframes, the subframes comprising pilot symbols. Wherein, in one polarization direction, the number NPS of pilot symbols in the subframe is an even number greater than 0. Each pilot symbol is one of four complex numbers, namely-A-Aj,-A + Aj, A-Aj and A + Aj, and A is a real number. Each continuous NPG symbols in the subframe comprises one pilot symbol located at a fixed position. The superframe comprises a first type of subframe, the first type of subframe further comprises NFAW frame synchronization symbols, and each frame synchronization symbol is one of four complex numbers of-A-Aj,-A + Aj, A-Aj and A + Aj. One symbol in the first type of subframes is both a pilot symbol and a frame synchronization symbol, and the NFAW is an odd number. And further, the transmitting end transmits the superframe. It should be understood that there is no training symbol in the subframe, which has lower redundancy and simplifies the structure of the subframe.

The embodiment of the invention discloses a data processing method which is applied to the field of optical communication. The method comprises the steps of obtaining first data; obtaining a first bit set according to the first data and the added bits; the first bit set is subjected to forward error correction (FEC) coding and interleaving to obtain a pre-framing bit set, in the first bit set, each a bits are subjected to FEC coding to obtain b coded bits, a and b are positive integers, b / a is any one of 96 / 79, 80 / 63 and 112 / 95, and the pre-framing bit set is used for generating a superframe. The superframe formed according to the invention has stronger error correction capability, and can be suitable for transmission systems of 800Gbit / s, 1.6 Tbit / s and even higher speed.

In an example, a wireless battery management system (200) includes one or more sets of battery cells (208). The wireless battery management system (200) includes a master node (102) configured to broadcast a downlink packet in a first superframe. The wireless battery management system (200) also includes a first secondary node (206) coupled to a first set of battery cells (208). The first secondary node (206) is configured to receive the downlink packet and transmit a first uplink packet to the primary node (102) during the first superframe. The wireless battery management system (200) includes a second secondary node (210) coupled to a second set of battery cells (212). The second secondary node (210) is configured to receive the first uplink packet from the first secondary node (206) in the first superframe. The second secondary node (210) is also configured to transmit a second uplink packet to the primary node (102) during a second superframe.

In one example, a wireless battery management system (200) includes one or more sets of battery cells (208). The wireless battery management system (200) includes a primary node (102) configured to broadcast a downlink packet in a first superframe. The wireless battery management system (200) also includes a first secondary node (206) coupled to a first set of battery cells (208). The first secondary node (206) is configured to receive the downlink packet and transmit a first uplink packet to the primary node (102) during the first superframe. The wireless battery management system (200) includes a second secondary node (210) coupled to a second set of battery cells (212). The second secondary node (210) is configured to receive the first uplink packet from the first secondary node (206) in the first superframe.The second secondary node (210) is also configured to transmit a second uplink packet to the primary node (102) during a second superframe.

In one embodiment, a system includes a first device rendering image data, a second device storing the image data, and a display panel that displays the image data stored in the memory. The first device renders multiple frames of the image data, compresses the multiple frames into a single superframe, and transports the single superframe. The second device receives the single superframe, decompresses the single superframe into the multiple frames of image data, and stores the image data on a memory of the second device.

The invention discloses a scheduling method supporting TDMA and CSMA / CA hybrid access, comprising the following steps: periodically broadcasting a beacon frame, the beacon frame being used for defining the structure of a superframe; wherein the superframe is divided into a TDMA period and a CSMA / CA period in time, and a time boundary between the TDMA period and the CSMA / CA period is dynamically adjustable; the TDMA period comprises one or more special time slots distributed to specific network equipment and is used for deterministic data transmission; the CSMA / CA period is a shared channel access period, and the network device competes for access through a CSMA / CA mechanism and is used for flexible data transmission. By dynamically adjusting the time boundary of the TDMA and CSMA / CA periods, the dynamic fusion of deterministic transmission and flexible transmission is realized, the dynamic fusion of deterministic transmission and flexible transmission is realized, the utilization rate of network resources is improved, and the dual service requirements in an industrial wireless network are met.

The invention discloses an ad hoc network system and method based on TDMA, and relates to the technical field of wireless communication. The system comprises a master node and a plurality of slave nodes which are respectively provided with a high-precision timing counter. A system defines a superframe structure containing time slots, a master node broadcasts access information, and slave nodes monitor access and allocate the time slots. A node broadcasts a beacon frame with a local timestamp in a sending time slot of the node, and calibrates a clock of the node when receiving a beacon of the node, so that distributed time synchronization is realized. When a node sends data, the sending time slot is ended in advance under the condition of distance so as to avoid crosstalk between the time slots. The system also defines a frequency sweeping time slot, and self-adaptive channel frequency hopping is realized through centralized decision of the main node so as to resist interference; and a dynamic time slot allocation mechanism is adopted, standby time slots are applied and released as required, and the resource utilization rate is improved. According to the invention, the problems of low synchronization precision, poor interference resistance, resource allocation rigidity, time delay influence and the like of the traditional TDMA ad hoc network are solved, and high-reliability and high-efficiency multi-hop ad hoc network communication is realized.

The present invention relates to a transmission system (1) for generating a signal to be transmitted via one or more physical carriers to a plurality of earth station receivers of a satellite communication system. The transmission system comprises - encoding means (10) arranged to convert per physical carrier a single stream of baseband frames each associated to a modulation and coding, modcod, into a single stream of XFEC frames according to the DVB-S2X standard, - framing means (20) arranged to convert per physical carrier the single stream of XFEC frames to a single stream of IQ symbols comprising one or more superframes according to the DVB-S2X standard, each superframe comprising at least a superframe preamble, - modulation means (30) arranged to convert per physical carrier the single stream of IQ symbols at a physical carrier symbol rate into IQ samples. The transmission system further comprises a superframe placer (5) to attach to the single stream of baseband frames or the single stream of XFEC frames metadata indicating to the framing means when a superframe preamble needs to be inserted in the stream of IQ symbols composed in the framing means.

The embodiment of the invention provides a wireless communication method of a TDMA (Time Division Multiple Access) system and a related device, and the wireless communication method is applied to first communication equipment and comprises the following steps: determining a superframe corresponding to a primary service call; the superframe comprises a plurality of service bursts and flexible bursts, the service bursts are used for bearing first service data to be transmitted by the first communication equipment, and the flexible bursts are provided for the first communication equipment to transmit second service data or receive third service data; the first business data, the second business data and the third business data are data of the same business or data of different businesses. The super-frame comprises the flexible burst, and the flexible burst can be provided for the first communication device to send the service data as the idle period, can also be provided for the first communication device to receive the service data transmitted by other devices, and can also be provided for other communication devices to transmit the service data, so that the effect that one super-frame opens up the idle period to transmit other information is realized; service expansion is facilitated, and user requirements can be better supported.

In an example, a method includes receiving a first downlink (406A) on a first channel from a wireless master node (302) at a wireless head node (306.1) in a WBMS in a superframe (402A), where the wireless head node (306.1) is a head node of a sub-cluster of one or more wireless devices (308). The method includes transmitting, in the superframe (402A), a second downlink (408) on a second channel from the radio head node (306.1) to each of the one or more wireless devices (308). The method includes receiving, at the radio head node (306.1), an uplink (420) from each of the one or more wireless devices (308) on the second channel in the superframe (402A). The method includes transmitting an aggregated uplink (424) from the wireless head node (306.1) to the wireless master node (302) on the first channel in the superframe (402A), wherein the aggregated uplink (424) includes data from each of the one or more wireless devices (308).

The invention belongs to the technical field of wireless network scheduling, and particularly relates to a fine-grained data flow real-time scheduling method and system in a wireless network, and the scheduling method specifically comprises the steps: decomposing a reference period based on a decomposition factor method, and obtaining a reference factor decomposition formula; respectively reducing the original periods of the other time trigger streams based on the reference factor decomposition formula to obtain a target reduced period; determining whether a schedulable condition is satisfied based on the reference period and the target reduction period; if yes, carrying out priority ranking on the time trigger flow, distributing the time trigger flow to a time slot of a superframe, and carrying out real-time scheduling on the time trigger flow by utilizing an earliest deadline priority scheduling algorithm; the free time slot of the superframe is used as a reserved time slot for scheduling the event trigger flow. According to the method, the period of each time trigger flow is compressed by adopting a decomposition factor method, so that the superframe length is reduced, the memory occupation of network nodes is reduced, and the corresponding real-time scheduling method has finer time granularity and can also remarkably reduce the sending delay.

An operating method of a first ultra wide band (UWB) device, according to various embodiments of the present disclosure, comprises the steps of: receiving, from a second UWB device, a beacon message including configuration information about a superframe through which a plurality of UWB devices communicate; confirming a hybrid period (HP) and a ranging-only period (ROP) in the superframe on the basis of the configuration information; and communicating with a third UWB device on the basis of the HP and the ROP.

The embodiment of the invention discloses a satellite communication system and a time synchronization method thereof. The satellite communication system comprises a gateway, a terminal and a satellite. The method comprises the steps that a gateway is used for sending a time synchronization signal containing a super frame number or a frame number to a satellite in first X frames of an Nth gateway frame, the duration time of the first X frames is larger than the round-trip time from a terminal to the gateway, the actual sending moment of the time synchronization signal has first delay sending time relative to frame headers of the first X frames, N is a positive integer, and the first delay sending time is larger than the first delay sending time. X is a positive integer; receiving the time synchronization signal sent by the satellite by using the terminal, and calculating a second delay sending time according to the duration of the first X frames, the round-trip time from the terminal to the gateway and the first delay sending time, and the Nth terminal frame corresponding to the Nth gateway frame is sent at the end moment of the second delay sending time, so that the Nth gateway frame and the Nth terminal frame are synchronized in time.

The invention discloses a UWB positioning communication networking and label node fast access method in a tunnel, anchor nodes are deployed along the tunnel according to a linear interval, one anchor node and label nodes positioned in a signal coverage range of the anchor node form a UWB positioning communication subnet, time slot management in a superframe of the communication subnet is divided into a macro time slot and a micro time slot, and the macro time slot and the micro time slot are distributed in the same time slot. One time of complete task distribution is completed in one macro time slot, and one macro time slot comprises at least one micro time slot; when a label node transits from a communication subnet of one anchor node to a communication subnet of another anchor node, the anchor node of the communication subnet where the label node is located actively allocates a macro time slot and a micro time slot of a neighbor anchor node to the label node by negotiating with the neighbor anchor node. The label node does not need to apply for a time slot after moving to a communication subnet of a neighbor anchor node, and the label node can be always online as long as the label node accesses the network once. According to the method, the communication efficiency, the real-time performance and the reliability are improved, and the density and the real-time performance of the label nodes are also improved.

The present invention belongs to the technical field of industrial wireless networks, and particularly relates to an age-of-information optimization scheduling method for an industrial wireless network and based on a multi-dimensional conflict graph, the method comprising: compiling statistics on age-of-information changes of each data stream in each superframe, and on the basis of an average expected age-of-information calculation formula for the data stream, modeling the problem of minimizing the overall average expected age of information into an integer programming model for time slot and channel allocation; constructing a three-dimensional conflict graph composed of a data-stream–link–time-slot three-dimensional tuple, converting a time-slot scheduling problem into a maximum weight independent set problem, and solving same to obtain a time-slot scheduling strategy; and on the basis of the time-slot scheduling strategy, adding a channel dimension to the data-stream–link–time-slot three-dimensional tuple to form a four-dimensional tuple and constructing a four-dimensional conflict graph, converting a channel allocation problem into a maximum weight independent set problem for solving, and solving same to obtain a channel allocation strategy. The optimization scheduling algorithm used in the present invention can reduce the age of information of a data stream and improve the real-time performance of a network.

The present application relates to a method, device, electronic device, and storage medium for carrying electric power voice information. The method includes: obtaining electric power voice information to be carried, wherein the electric power voice information includes electric power voice data and a key information header corresponding to the electric power voice data; segmenting the electric power voice data and the key information header respectively to obtain multiple compressed voice segments and multiple key information segments; carrying the multiple compressed voice segments and the multiple key information segments to the first area of ​​each voice burst according to a preset carrying rule, and channel encoding the information in the first area of ​​each voice burst, and sending it to the receiving end in the form of a voice superframe, so that the receiving end parses the electric power voice data and the key information header from the voice superframe, and decrypts the electric power voice data based on the key information header, wherein each voice superframe includes multiple voice bursts. In this way, voice bursts can be used to carry electric power voice data and key information headers, thereby realizing secure transmission of electric power voice data.

In an example, a method includes receiving, in a first superframe (502B), a first downlink (522B) from a wireless master node (504) on a first channel at a wireless device (506.5) in a WBMS, where the first downlink (522B) indicates a second channel assigned to the wireless device (506.5). The method includes transmitting, in the first superframe (502B), a synchronization frame (530) from the wireless device (506.5) to an asynchronous wireless device (506.3) on the second channel, where the synchronization frame (530) indicates a third channel. The method also includes receiving, in the first superframe (502B), the synchronization frame (530) at the asynchronous wireless device (506.3) on the second channel. The method includes transmitting an uplink from the asynchronous wireless device (506.3) to the wireless master node (504) on the third channel in a second superframe following the first superframe (502B).

The invention provides a video data WLAN (Wireless Local Area Network) transmission monitoring method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring data buffer time of a video sending end; performing superframe difference processing on the data buffer time and preset buffer time to obtain a buffer time difference; and sending a data retransmission loss signal to the video receiving end according to the cache time difference so as to adjust a retransmission request mode of the video sending end. Generally, video data transmission adopts a broadcast mode to send data packets, when frame number loss exists, supplementary transmission is carried out according to current buffer area data, specifically supplementary transmission is carried out in a unicast mode so as to make up the packet loss condition of opposite terminal equipment during broadcasting, and when retransmission is carried out, retransmitted fragmented packets are not received within the time range of one frame, the time range of one frame is not received. And if yes, stopping retransmission and discarding the fragmented packet so as to ensure low delay and reliability during video data transmission and further ensure the video data transmission quality.

The present application discloses a two-way ranging method and a two-way ranging device as well as an ultra-wideband positioning system. Based on the present application, by assigning a fixed response order to the base stations of the ultra-wideband positioning system, any base station has a response time slice with a fixed sequence position in the response time slice sequence of the available superframe time slot of any tag, and during the system operation of the ultra-wideband positioning system, for the two-way ranging initiated by any tag at any regional location, the base stations within the communication range of the tag can perform time-sharing responses based on the fixed response order of the base station, without relying on the scheduling device, and without signal collision interference between different base stations in the same response time slice. Thus, each base station of the ultra-wideband positioning system can independently determine the response time slot to avoid signal collision interference, and further, there is no need to deploy a scheduling device in the ultra-wideband positioning system, so as to help improve the deployment flexibility and system stability of the ultra-wideband positioning system.

Methods, apparatus, systems and articles of manufacture are described for a wireless battery system. An example apparatus includes at least one memory, instructions, and processor circuitry to at least one of instantiate or execute the instructions to identify a first battery node to transmit an uplink command during a first superframe interval, transmit a downlink command to the first battery node and a second battery node, the first battery node to switch in the first superframe interval from a receive state to a transmit state in response to the downlink command, the first battery node to transmit the uplink command in the transmit state, and receive the uplink command from the first battery node in the first superframe interval.

The invention provides a reverse time offset compensation method, device and equipment and a medium, and the method comprises the steps: determining a superframe header position through employing a superframe synchronization algorithm when a digital video broadcasting DVB terminal searches a satellite; performing frame format analysis processing based on the superframe header position to obtain a corresponding frame type format; when the superframe header position is in an available state, obtaining a theoretical frame header position corresponding to the frame type format according to the frame type format; and according to the theoretical frame header position and the superframe header position, determining a time offset error value and sending the time offset error value to a signaling processing unit, so that the signaling processing unit performs time offset compensation correction according to the time offset error value and determines a target time offset value. According to the scheme, the access stability and the data transmission reliability of the DVB communication system are improved.

This invention discloses a large-scale hybrid constellation distributed downlink spectrum sharing method based on game theory, comprising the following steps: establishing a link channel model in the hybrid constellation; using a perceived satisfaction function as an evaluation index of user performance; formulating a channel allocation game to capture the interaction and conflict between links, formalizing the channel allocation problem as a latent game; to solve the Nash equilibrium solution of the game model, dividing the system cycle into several equal topology cycles, with the topology of the ground-satellite link remaining unchanged within each topology cycle; dividing the topology cycle into a link establishment superframe and a data transmission superframe; and then using a distributed channel allocation algorithm based on stochastic learning for allocation. This application transforms a dynamic social problem into a static channel allocation problem; establishes a mathematical model based on game theory to represent user interaction; balances convergence speed and overall network satisfaction, and improves spectrum efficiency.

Methods, apparatuses, and systems for signal construction in wireless communication are disclosed. In one embodiment, a method performed by a wireless communication node is disclosed. The method includes: generating a superframe based on N identical subframes, where N is an integer greater than 1; and transmitting at least one signal to a wireless communication device in the superframe.

The present disclosure relates to a superframe number synchronization method and device, electronic equipment, chip and medium, wherein the method comprises: in the case of successful reestablishment of the confirmation mode, combining the current superframe number of the terminal device to decrypt the data packet received from the network device to obtain the decrypted data packet; combining the first data packet parameter in the data packet and the second data packet parameter of the decrypted data packet to determine whether the data packet is decrypted successfully; in the case of data packet decryption failure, selecting the target candidate superframe number of the successfully decrypted data packet from the candidate superframe number array corresponding to the current superframe number, and then updating the current superframe number to realize the superframe number synchronization between the terminal device and the network device; wherein through the comparison of the first data packet parameter and the second data packet parameter, the superframe number out-of-sync condition can be quickly detected, and the superframe number synchronization processing is performed, thereby avoiding data packet decryption failure and avoiding data transmission interruption, and improving the data transmission performance.

The embodiment of the invention provides a method and device for sending or receiving a broadcast channel. The complexity of BCH detection can be reduced, and the overhead of BCH analysis can be saved. The method comprises the following steps: a G node sends a broadcast channel (BCH), the BCH is centrally and continuously borne in a superframe in a time domain, and the length of the superframe is 1ms.