22 results about "Channel reservation" patented technology

The embodiment of the invention discloses a WiFi data sending method and device, a storage medium and WiFi equipment, and relates to the field of wireless communication. The method provided by the invention comprises the following steps: when a data frame to be sent exists, the equipment firstly executes CCA to judge that a channel is idle, and obtains an initial MCS serial number; a test frame is sent based on the MCS, and if an ACK frame is received within a preset duration, channel reservation succeeds; if the MCS sequence number is not received, reducing the MCS sequence number according to a preset rule and rebooking until success or reducing the MCS sequence number to the minimum value; and finally, calculating the total time length of the data frame according to the successfully reserved MCS serial number, and completing the transmission of the data frame in the total time length by using a corresponding modulation coding scheme. By dynamically adapting the MCS serial number, the channel utilization rate and the transmission reliability are improved.

A wireless transmit / receive unit (WTRU) may receive downlink control information (DCI) scheduling a sidelink (SL) grant that indicates a time window to initiate a channel occupancy time (COT). The WTRU may perform listen-before-talk (LBT) to access an SL unlicensed channel in an unlicensed band within the indicated time window to initiate the COT. After a successful channel access outcome of the performed LBT, the WTRU may transmit uplink control information (UCI) to a base station. The UCI may indicate the successful channel access outcome and a COT starting time within the indicated time window to initiate the COT. Also, the UCI may further indicate an intended number of transmissions by the WTRU in the COT. Moreover, the UCI may further indicate reserved sub-channels, reserved interlaces, or both, within the COT. Additionally, based on a buffer status and the COT starting time, the WTRU may determine whether to share the COT.

Methods and apparatus for wireless channel reservation using extended range Request to Send (RTS) / Clear to Send (CTS) procedures to minimize collisions with OBSS devices. In a method, a first wireless device transmits an extended range RTS frame and receives, in response, a non-extended range CTS frame from a second wireless device. The first wireless device then transmits an extended range physical layer protocol data unit (PPDU) for reception by the second wireless device. This method may further include fragmenting the extended range PPDU into a plurality of extended range fragments, transmitting a first extended range fragment, receiving a non-extended range acknowledgement (ACK) from the second wireless device, and transmitting a second extended range fragment.

The invention discloses a substrate, a system and a method for testing stacked chips. The substrate comprises a substrate body with a bare chip setting area, a plurality of independent bonding pad units arranged in a surrounding manner, and a connecting unit. The core is that the number of the bonding pad units is preset to be not less than the maximum stacking layer number of the to-be-tested chip, and the interface connecting points of the connecting units are independently and correspondingly connected with the bonding pad connecting points of different bonding pad units through internal wiring of the substrate. According to the testing system and method based on the substrate, through combination of channel reservation on hardware and selective resource allocation on software, compatibility testing on multiple layers of stacked chips by a single testing platform is achieved, and accurate and independent measurement on each layer of bare chips under power supply isolation is supported. According to the invention, the test efficiency and flexibility are improved, the test cost is reduced, and the test quality and reliability of the three-dimensional stacked chip are ensured.

The invention discloses a channel reservation method for video service quality assurance. The method comprises the following steps: firstly, performing static queue mapping on a video frame by a V-STA; then, the V-STA sends a channel reservation request frame; next, replying a channel reservation response frame by the VR-STA; receiving a channel reservation response frame; and finally, in the SP stage, all stations need to end the current data transmission, and the channel is ensured to be in an idle state when the SP starts. According to the invention, different video frame types can be reasonably mapped to different priorities according to a cross-layer queue mapping mechanism, and channel reservation is flexibly executed, so that the QoS requirements of low-delay and high-reliability video streaming services are ensured.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may obtain a channel occupancy time (COT) in an unlicensed frequency spectrum band. The COT may include an initial time interval for an initial transmission and a subsequent time interval for a subsequent transmission. In the initial time interval, the UE may transmit control information and data to another UE, where the control information indicates the subsequent time interval. The other UE may selectively perform communications during the subsequent time interval. The UE may perform the subsequent transmission during the subsequent time interval.

Methods, apparatuses, devices, and computer readable media for wireless communication are described. Methods and apparatuses for transmitting and detecting channel reservation preambles in NR shared spectrum are described. One aspect can include determining whether a first reservation preamble of a first operator is received from a first network entity on a first slot of a plurality of slots of a downlink channel and transmitting a second reservation preamble of the first operator to a second network entity on an uplink channel. Another aspect can include generating the first reservation preamble of the first operator based on at least one of a compressed representation in a signal space, a basis function of the signal space, or a CAZAC sequence; and transmitting the first reservation preamble of the first operator to at least a UE on the first slot of the plurality of slots of the downlink channel. In another aspect, SFN transmission of first and second reservation preambles and low latency detection methods of these reservation preambles are disclosed.

The application discloses a ticket reservation and cancellation integrated system, which belongs to the technical field of ticketing and specifically comprises a ticket information modeling module, a multi-channel reservation request unified access module, an order verification and confirmation module, a dynamic encryption two-dimensional code generation module and a user terminal and cloud push module.

Certain aspects of the present disclosure provide techniques for channel reservation for a sidelink. In some embodiments, the present disclosure describes determining a resource allocation for communicating on a plurality of subchannels within a time slot, wherein the resource allocation provides: (i) a first set of subchannels of the plurality of subchannels allocated for transmitting data to a plurality of UEs, and (ii) a first subchannel of the plurality of subchannels allocated for transmitting a group reservation signal, the group reservation signal including at least a communication parameter indicating the resource allocation for the first set of subchannels.

This disclosure describes methods, systems, and devices for wireless communications in which a transmitting device using a shared radio frequency spectrum can perform a listen-before-talk (LBT) procedure for at least a minimum defer time and, after successfully completing the LBT procedure, can occupy the spectrum for a duration of a channel occupancy time (COT). The transmitting device can interrupt transmission for a gap period during the COT and resume transmission after the gap period without performing another LBT procedure. The minimum defer time can be based on a periodicity of channel reservation signals transmitted by one or more other devices using the shared radio frequency spectrum. In some cases, the transmitting device can schedule one or more receiving devices with resources for transmission during the COT, and the receiving devices can perform LBT that is not adjacent to associated transmissions.

The present invention relates to the field of communication technologies, and provides a method, a system, an electronic device, and a storage medium for low-earth orbit satellite data transmission. The method includes: receiving the channel occupancy rates of the first preset number of transmission cycles corresponding to each channel sent by a low-earth orbit satellite; determining the terminal transmission permission probability corresponding to each channel based on the channel occupancy rates of the first preset number of transmission cycles; obtaining a random number, and determining the transmission permission of a ground communication terminal based on the low-order byte of the random number and the terminal transmission permission probability. On the one hand, the ground communication terminal uses a random channel for transmission without the need for channel reservation, omitting the channel occupancy for multiple interactive data communications, and effectively improving the channel occupancy rate. On the other hand, based on the low-order byte of the random number and the terminal transmission permission probability, the transmission permission of the ground communication terminal is determined, effectively reducing the frequency of the ground communication terminal using a congested channel, reducing the collision probability, and avoiding the occurrence of channel blocking.

The present document relates to a communication method considering a time domain overlapping situation between signals transmitted through a direct communication link, and a user device therefor. To this end, the communication method comprises: receiving, by a second user equipment (UE), a physical control channel through a direct communication link and a physical shared channel corresponding to the physical control channel in a first time resource from a first UE performing communication through the direct communication link; and receiving a reference signal (RS) for beam management of the direct communication link. In this case, for the physical control channel / physical shared channel, a second time resource for retransmission is reserved on the basis of control information transmitted by the physical control channel, and the receiving of the RS includes receiving a standalone RS without data transmission through a third time resource. In the present invention, when the third time resource overlaps with the first time resource / the second time resource, a reception beam is determined on the basis of the priority between the standalone RS and the physical control channel / physical shared channel.

The invention discloses a service sending method, a service receiving method, a specified data sending method and a related device, and relates to the field of communication, and the method comprises the steps that a digital intercom device responds to a voice service sending demand, transmits voice service data at a first position, and reduces the power for transmission or stops transmission at a second position, and finally, the voice service sending task containing the reserved channel is realized. According to the invention, the voice coding data is transmitted by occupying at least one of the bit stealing position outside the reserved channel, the spare position after voice compression and the embedded position, that is, the voice coding data bearing capacity of the first position is increased by compressing the voice coding data or utilizing the additional embedded position, and normal transmission of voice service is ensured; according to the method and the device, power transmission is reduced or transmission is stopped at the second position, so that channel reservation in the voice process is realized, a basis is provided for other equipment to transmit and receive specified data by using the reserved channel in the service process, and function realization depending on the specified data is ensured.

A media access control method for an underwater acoustic network based on reorganized time slot directional reception. When multiple underwater nodes simultaneously send DATA data packets to the sink node, it is determined whether the DATA data packet can arrive at the time slot start point of the reorganized time slot of the sink node. If so, it is sent; otherwise, it is sent after a backoff period. After the DATA data packet arrives at the sink node, the sink node determines the position of the sending node based on the DATA data packet and receives the DATA information packet in the DATA data packet through the directional reception method. A media access control method for an underwater acoustic network based on reorganized time slot directional reception can effectively improve the transmission throughput. After a successful channel reservation, the receiving node performs backoff and actively waits for all underwater nodes that need to send to finish sending the DATA data packet, which can effectively reduce the collision of DATA data packets at the sink node. Using the directional reception technology, it is applicable to large-scale data collection-type underwater acoustic sensor networks.

Techniques pertaining to an efficient pre-channel reservation mechanism for target wake time (TWT) and restricted TWT (rTWT) in overlapping basic service set (OBSS) dense networks are described. A first station (STA) transmits a frame to reserve a reservation period. The first STA then communicates with a second STA during the reservation period which aligns at least partially with a target wake time (TWT) service period (SP) or a restricted TWT (rTWT) SP of the second STA.

The present application relates to the field of machine learning model training, compression and inference technology in artificial intelligence, and discloses a robot perception inference decision method based on end-side lightweight pre-training model. The method acquires a robot multi-modal perception sample sequence for model training and encodes it into a training multi-dimensional input tensor with a modal quality mark; generates a teacher inference state tensor and a teacher decision distribution matrix through a teacher pre-training model, and constructs a decision boundary sample set; performs boundary maintaining distillation training on a student pre-training model, determines a decision maintaining contribution value based on the inference state tensor offset and the decision distribution matrix offset before and after temporary shielding of a candidate channel, and generates a joint compression execution table; performs channel reservation, channel replacement, channel deletion and hierarchical quantization according to the joint compression execution table, and obtains an end-side lightweight pre-training model; inputs a multi-dimensional input tensor to be inferred into the end-side lightweight pre-training model, and generates a decision output tensor based on an end-side inference subgraph identification.

The present invention discloses a pipeline transmission method for two adjacent hop underwater acoustic links driven by routing, comprising the following steps: S1: Node A1 initiates an RTS channel access request to Node B; S2: After receiving the RTS channel access request, Node B responds with a CTS message to all downstream neighboring nodes and an upstream neighboring node C; S3: After receiving the CTS message from Node B, each Node A sends data to Node B according to the command; S4: After receiving the data, Node B generates a new data packet and sends it to the upstream neighboring node C and all downstream neighboring nodes A; S5: Node C opportunistically receives the data packet from Node B, while neighboring node A also receives the data packet, performs ACK / NAK determination, and completes channel error control. The present invention reduces the number of channel reservations in the network, reduces the end-to-end delay and energy consumption of the underwater acoustic sensor network, and can improve the overall performance of the underwater acoustic sensor network.

The present application belongs to the technical field of satellite communication, and particularly relates to a switching channel resource management method, which mainly solves the problem of high switching failure rate or low new call user access success rate caused by unreasonable switching channel reservation in the prior art. The implementation scheme is as follows: in the face of the staring coverage mode, the global ground surface area is divided into several position areas according to the longitude and latitude; the number of new call users in each position area in a future period of time is predicted according to the user behavior data of each position area at historical time and the user behavior data at the current time; the user access success rate, the user switching success rate and the user average weighted satisfaction are set as the utility function, and the optimal channel resource threshold of all low-orbit satellites and the optimal switching channel of the switching user are periodically calculated. The present application improves the user access success rate and the user switching success rate, reduces the calculation amount of user access and switching, improves the user service satisfaction and the channel resource utilization rate, and can be used in the satellite communication network.

This invention claims protection for a high-efficiency, high-bandwidth-utilization directional access control method for terahertz wireless networks, comprising: designing a memory-assisted control interaction mechanism; designing a priority-based channel reservation mechanism; each node in the network maintains a location information storage table to store location information that the node has broadcast in the network, and the node's location information can be quickly obtained by looking up the table. During the control interaction process, whether or not the location information field in the control frame is omitted is determined by whether the location information has changed, thereby reducing the control interaction time and increasing the time for data transmission on the THz channel. By setting priorities for nodes, the success rate of nodes that can transmit data in parallel to compete for the channel is increased, the channel is reserved in advance, and the utilization rate of the THz channel is improved.

The invention relates to a super-multi-hop wireless ad hoc network communication method based on a full duplex relay cluster, which is applied to a linear chain communication network and comprises the following steps: initiating RTS / CTS interaction between a head end node and a tail end node to perform clustering, and determining a plurality of relay nodes as cluster head nodes according to SINR measured in the interaction process; channel reservation is carried out, whether a busy cluster head node exists or not is judged, if the busy cluster head node exists, the cluster head node closest to the busy cluster head node is used as a receiving node, full duplex handshake is carried out with the receiving node, data to be sent are sent to the receiving node, and the receiving node repeats the channel reservation and full duplex handshake process. And carrying out relay forwarding on the received to-be-sent data until a destination node, and if no busy cluster head node exists, carrying out full-duplex handshake with the destination node and sending the to-be-sent data to the destination node. According to the invention, the transmission time delay of long-distance super multi-hop and the blocking probability during sudden large flow can be greatly reduced.

The present disclosure provides methods, components, devices, and systems for back-to-back transmission via a multi-hop relay path using flow-specific resource reservation. Some aspects more specifically relate to flow-specific transmit opportunity (TXOP) sharing and / or orthogonal channel reservation in combination with flow-specific time slot sequences. In particular implementations that employ flow-specific TXOP sharing in conjunction with a flow-specific time slot sequence, one or more wireless communication devices may determine whether a shared TXOP replaces the time slot sequence according to whether the shared TXOP is associated with the same flow as the flow-specific time slot sequence. In particular implementations employing orthogonal channel reservation in conjunction with a stream-specific slot sequence, each wireless communication device of a multi-hop relay path may receive an indication of or otherwise be configured with a frequency channel over which to transmit.

A terminal device and a communication method therefor, and a related device. The communication method for the terminal device comprises: employing an HB BLE module to send channel reservation indication information to a Wi-Fi module, the channel reservation indication information comprising information of a predetermined time of use of a Wi-Fi channel; employing the Wi-Fi module to receive the channel reservation indication information, and reserving the Wi-Fi channel on the basis of the channel reservation indication information; when the Wi-Fi channel is successfully reserved on the basis of the channel reservation indication information, employing the Wi-Fi module to send channel reservation success notification information to the HB BLE module; and upon receiving the channel reservation success notification information sent by the Wi-Fi module, employing the HB BLE module to use the Wi-Fi channel to perform data interaction with a peer HB BLE device within the predetermined time of use. The technical solution of the present invention can improve the communication quality of a terminal device.