185 results about "Channel access method" patented technology

The embodiments of the present invention relate to the field of communications, and disclose a slave channel access method, an electronic device, and a storage medium. The method includes: after determining that a terminal has the slave channel access capability, negotiating slave channel access with the terminal, and reaching a consensus with the terminal on the slave channel access method; when the main channel is unavailable or busy, determining whether there is an idle slave channel in the slave channels that have reached a consensus with the terminal on the slave channel access method; sending MU‑RTS to the terminal on the determined idle slave channel; receiving CTS sent by the terminal on the slave channel indicated by the MU‑RTS or on the slave channel determined according to specific rules. The embodiments of the present invention improve the channel utilization rate of the terminal when transmitting data in MU‑MIMO and OFDMA modes by using slave channel access to transmit data when the main channel is busy.

Methods, systems, and devices for wireless communication are described. An access point (AP) and a station (STA) may utilize a primary primary sub-channel (M primary channel) and an opportunistic primary channel (O primary channel) according to one or more rules. For example, the AP and the STA may align transmit opportunity (TXOP) boundaries across the O primary channel and the M primary channel such that transmission or reception on the O primary channel does not extend beyond (or end prematurely) relative to TXOP on the M primary channel. To facilitate such boundary alignment, the AP and STA may perform an initial frame exchange indicating a remainder of a duration of a current TXOP on the M-master (thereby facilitating alignment of an end boundary of a new TXOP on the O-master). The initial frame exchange may include an initiation frame and a response frame, and may be initiated by the AP or the STA.

Provided are a channel access method and apparatus and a communication device. The method includes: a first device sends a first frame, the first frame comprising a first field, and the first field being used for indicating a channel occupancy time of a first channel; the first field is used for a second device to set or update a network allocation vector (NAV), and the NAV is used for the second device to determine a busy time of the first channel; all or part of the channel occupancy time is used for a first type of devices or a third device to perform communication on the first channel, and the third device belongs to the first type devices.

A channel access method for sidelink (SL) communication by a user equipment (UE) includes accessing, by the UE, a channel for SL transmission based on a reference duration, wherein the reference duration has a duration starting from a beginning of a channel occupancy until an end of a first slot of a first type of physical sidelink shared channel (PSSCH) transmission, or until an end of a first type of PSSCH transmission burst, or until an end of a second type of PSSCH transmission burst.

A channel access method applied to a first communication node includes that the feedback information of a second SL transmission corresponding to a first SL transmission and the SL cast type of the second SL transmission are acquired, where the second SL transmission is a transmission performed before the first SL transmission and within the channel occupation time acquired by using a first channel access type; that a contention window adjustment policy of the first SL transmission is determined according to the feedback information and the SL cast type; and that a contention window corresponding to the first SL transmission is adjusted according to the contention window adjustment policy to enable the first communication node to perform channel access according to the contention window.

A method and a device for operating in a wireless LAN system are disclosed. The method performed by a first station (STA) in a wireless LAN system, according to one embodiment of the present disclosure, comprises the steps of: transmitting, to a second AP, a request frame including first information related to a non-primary channel access procedure on a first channel of a first basic service set (BSS); receiving, from the second AP, a response frame including second information indicating whether to accept the request frame; and, on the basis of the request frame and the response frame, transmitting, to at least one STA, a first frame including third information related to the non-primary channel access procedure on the first channel, wherein the first channel of the first BSS related to the first AP can entirely or partially overlap a second channel of a second BSS related to the second AP.

Channel access in unlicensed spectrum may be a function of the type of physical channel and / or a procedure that initiated a transmission. An LBT procedure may be performed as a function of beam management. A WTRU may access a channel using multiple channel access methods associated with multiple uplink transmissions based on a determination of persistent interference associated with the channel. Channel access methods may be performed with different parameters or characteristics based on the resource type / timing of the transmission / measurements of DL / UL RS. Channel access methods may be characterized by a sensing duration, an ED threshold, a beam width, and / or a beam direction. Different ED thresholds may be applied as a function of one or more characteristics of an applicable beam. Multiple sensing methods and / or related parameters may be applied as a function of the type of physical channel and / or the type of procedure associated with a transmission.

The embodiment of the invention discloses a communication method and device, and the method comprises the steps: an access point transmits a transmission opportunity TXOP initial control frame to a station after switching from a non-main channel to a main channel in a non-main channel access mode; and performing channel access based on whether the acknowledgement frame is received or not. By adopting the embodiment of the invention, the communication interference caused by the change of the OBSS TXOP on the main channel is avoided, the time for restarting normal channel competition after switching from the non-main channel to the main channel is opportunistically shortened, and the communication efficiency is improved.

Provided are a channel access method and a communication device, the method comprising: determining backoff time information on the basis of the length of a first time unit, the backoff time information indicating a first duration for a first device to execute backoff, the length of the first time unit being greater than or less than the length of a time slot; and executing a back-off process according to a channel state of a first channel and the back-off time information, the first channel being used for transmitting data of the first device after the back-off is finished. The backoff duration of the second device is determined based on the length of the time unit whose length is greater than or less than the length of the time slot, so that the probability of air interface collision between the first device and other devices in the network can be reduced, and the data transmission delay can be reduced.

A base station of a wireless communication system is disclosed. The base station of wireless communication includes a communication module and a processor. The processor is configured to receive a grant for scheduling a plurality of uplink transmissions from the base station, and when the UE attempts to a first fixed duration-based channel access for a first transmission which is one of the plurality of uplink transmission and fails in the first fixed duration-based channel access, attempt to a second fixed duration-based channel access for a second transmission which is a transmission following the first transmission.

A channel access method over an internet of things (IoT) interface. The device receives a trigger signal from a network node and determines, based on information carried in the trigger signal, whether to transmit a message carried in a first device-to-reader IoT signal to the network node upon receiving the information carried in the trigger signal. The device transmits the message carried in the first device-to-reader IoT signal to the network node if the determination is positive. The device receives a first reader-to-device IoT signal from the network node in response and determines whether to transmit a message carried in a second device-to-reader IoT signal to the network node based on information carried in the first reader-to-device IoT signall. The device transmits the message carried in the second device-to-reader IoT signal to the network node if the determination is positive and determines reception of the message by the network node.

A terminal includes: a control unit configured to assume that there are a scheduling cell and a scheduled cell in multi-carrier scheduling by single control information; and a reception unit configured to receive the single control information from the scheduling cell. The reception unit receives a plurality of scheduled cells based on the single control information, and, in a case where the plurality of the scheduled cells include an unlicensed frequency cell, the control unit determines an applicable multi-channel access method or determines an applicable operation related to Type 2 HARQ (Hybrid automatic repeat request) codebook.

Methods, systems, apparatuses, and computer program products for enhancing prioritized traffic exchange using enhanced distributed channel access are disclosed herein. In an implementation, one or more prioritized access parameters to be utilized for data traffic that satisfies at least one priority criterion for accessing a data channel are received, a transmission opportunity for one or more data frames via the data channel is obtained based on the one or more prioritized access parameters, and the one or more data frames are transmitted via the data channel.

A channel access method is provided. A user equipment (UE) obtains a configuration of a plurality of Physical Uplink Shared Channel (PUSCH) opportunities for PUSCH transmission within a configuration grant period of a configuration grant (CG) configuration. The configuration grant configuration includes information for reporting PUSCH occasion indications that are not used within the configuration grant period. The user equipment determines a hybrid automatic repeat request (HARQ) process identification (ID) for a valid PUSCH occasion within the configuration grant period. And the user equipment transmits first uplink control information (UCI) in the PUSCH on a first valid PUSCH occasion which is not unused, the first valid PUSCH occasion is associated with the determined HARQ process identifier, and the first UCI comprises an indication of a first group of PUSCH occasion which is not used.

The invention discloses a service channel access method based on distributed micro-services, and relates to the technical field of data transmission, and the access method comprises the steps of system initialization and configuration, client request processing, data processing and system operation, and network connection and optimization. Decoupling and cooperative work of each functional module are realized through a distributed architecture, and the flexibility, expandability and reliability of the system are improved; by constructing a multi-layer data controllable and easy-to-track exchange transmission mechanism, encryption transmission, parameter verification, auditing and plaintext-ciphertext conversion are carried out on data, and meanwhile, a data transmission level tracking technology is utilized, so that a data link is effectively monitored, and data security and compliance are guaranteed. On the premise of meeting compliance, convenient access of domestic users to overseas high-value data services (such as AI large models, academic resources and the like) is realized, and safe, reliable and efficient internet experience is provided for the users.

The present disclosure relates to a channel access method for performing transmission in an unlicensed band and an apparatus using the same. A base station of a wireless communication system is disclosed. A wireless communication base station includes a communication module and a processor. The processor is configured to receive a grant from a base station to schedule a plurality of uplink transmissions, and to schedule the plurality of uplink transmissions when the UE attempts a first fixed duration-based channel access for a first transmission as one of the plurality of uplink transmissions and fails in the first fixed duration-based channel access. A second fixed duration-based channel access is attempted for a second transmission as a transmission following the first transmission.

The embodiment of the invention provides a channel access method and device and a storage medium. In the method, an access point sends first indication information and / or second indication information, the first indication information and the second indication information indicate whether a first station is allowed to access a first channel, a frequency band occupied by the first channel is a part of a frequency band occupied by a second channel, the second channel is a channel of a first BSS, and the first BSS is a BSS to which the first station belongs; and when a first preset condition is satisfied, the first station tries to access the first channel according to the first indication information or the second indication information. And the access point flexibly indicates whether the first station can access the non-main channel or not through the first indication information and / or the second indication information.

A channel access method and a communication apparatus. The method can be applied to WLAN systems supporting IEEE 802.11ax next-generation Wi-Fi protocols such as 802.11be, Wi-Fi 7 or EHT, and 802.11 series protocols such as 802.11be next-generation and Wi-Fi 8, and can also be applied to UWB-based wireless personal area network systems and sensing systems. In the method, a first station can send a latency signal, so that an opportunity for prioritized channel access can be obtained, thereby reducing channel access latency. In addition, the first station can further perform first backoff before sending the latency signal, thereby reducing the impact of sending latency signals on channel access of conventional devices. In conclusion, the solution can achieve a balance between latency performance and fairness.

The invention relates to the technical field of communication, in particular to a channel access method, a communication method, a terminal and a storage medium, and the channel access method comprises the following steps: triggering a channel access process for a plurality of channels in an unlicensed frequency band based on first transmission of a direct link; and determining a multi-channel access mechanism for accessing the plurality of channels according to a second transmission after the first transmission. According to the invention, when the terminal needs the first transmission and then carries out the second transmission, the terminal can comprehensively consider the first transmission and the second transmission, thereby reasonably determining the multi-channel access mechanism for accessing a plurality of channels, and carrying out the multi-channel access based on the determined multi-channel access mechanism. And the technical problem that the multi-channel access delay is relatively large can be avoided as much as possible.

This disclosure provides a random access method over an Internet of Things (IoT) interface for Ambient IoT (A-IoT) devices with backscatter-enabled device-to-reader signal transmission. An A-IoT device receives a trigger signal from a network node, determines a resource location for a first device-to-reader IoT signal, transmits it, receives a first reader-to-device IoT signal, and decides whether to transmit a second device-to-reader IoT signal based thereon. The method supports contention-based or contention-free access, TDMA-or FDMA-based multiplexing, and handles failures with re-access mechanisms. It enables deployment of ultra-low-power A-IoT devices, realizes key use cases like inventory and commands, reduces maintenance costs, and ensures 3GPP coexistence.

The invention discloses a wireless communication device and a non-primary channel access method for the wireless communication device. The device detects a first physical layer protocol data unit (PPDU) on a primary channel. The device determines whether the first PPDU is an internal basic service set (BSS) transmission and is not for itself. If both conditions are satisfied, the device initiates a non-primary channel access NPCA procedure to enable the device to communicate on an idle non-primary channel by transmitting or receiving a second PPDU, thereby avoiding contention on a busy primary channel.

The invention discloses a self-adaptive channel access method for an ad hoc network of an unmanned aerial vehicle, relates to the technical field of wireless communication, and realizes channel selection and dynamic adjustment of contention windows by combining a multi-channel multi-contention window mechanism with deep reinforcement learning. Specifically, each unmanned aerial vehicle node initializes contention window values of a plurality of channels, and dynamically selects an optimal channel in a data transmission stage according to a channel busy / idle rate and contention window popularity. In a data retransmission stage, a contention window value is adjusted through a dual-depth Q network to minimize conflicts and optimize network performance. The state space comprises a self contention window, a local channel busy / idle rate, a neighbor average channel busy / idle rate and contention window popularity, and the award function comprehensively considers throughput, fairness and the average channel busy / idle rate. Experimental results show that compared with a traditional protocol, the method has the advantages that key performance indexes such as throughput, time delay and fairness are remarkably improved, and the method is particularly suitable for high-dynamic communication scenes such as unmanned aerial vehicle cluster cooperation and the Internet of Vehicles.

Embodiments of the present application provide a channel access method. The method comprises: sending a first physical sidelink feedback channel (PSFCH) to a second terminal, wherein the first PSFCH is used for instructing the second terminal to access a channel in a channel access mode of a specified type so as to use a reserved resource of the second terminal. In this way, the possibility of the second terminal accessing the channel in the channel access mode of the specified type can be improved; when the second terminal accesses the channel in the channel access mode of the specified type, the second terminal does not need to execute channel access of type 1; because the energy loss of the channel access process of the type 1 is high, the method is beneficial to reducing the energy loss of the second terminal executing channel access.

A communication apparatus capable of performing communication using a first channel access method using at least a primary channel in one link and a second channel access method using at least a secondary channel in one link in a busy state in which the primary channel is in a busy state. Using at least one non-primary channel different from the primary channel among the plurality of channels included in the link instead of using the primary channel; notifying another communication device having a function of performing communication using the second channel access method of first information, the first information being usable by the another communication device to determine whether or not communication using the second channel access method is allowed; and communicating with the other communication device that has received the first information.

This invention provides a channel access method and related apparatus for a non-STR (Simultaneous Transmit / Receive) MLD (Multi-Link Device) that improves channel access efficiency when the MLD is in a blind / self-interfering state. [Solution] A method applicable to a wireless local area network supporting the IEEE 802.11be standard, comprising the step that if the length of a first PPDU transmitted by the first MLD over a first link is less than or equal to a first value, the first MLD skips starting the medium synchronization delay timer with respect to the second link, and the first MLD is not permitted to perform simultaneous transmission and reception on the first and second links. Channel access efficiency can be improved when a non-STR MLD is in a blind / self-interfering state.

The invention provides a channel access method, a channel access device and a terminal. The method is applied to a terminal, and comprises: according to target information, determining the size of a contention window used by first target transmission for channel access, the first target transmission comprising one or more direct link (SL) transmissions; performing channel access for the first target transmission according to the size of the contention window; the target information comprises at least one of the following items: a reference priority of the first target transmission; other SL transmissions except the first target transmission use the latest contention window size for the first type of channel access; the terminal initiates the transmission type within the reference duration occupied by the last channel; and the terminal initiates the feedback type corresponding to the transmission of the direct link shared channel PSSCH in the reference duration occupied by the last channel. Thus, the terminal can adjust the contention window based on the above scheme, and execute channel access for straight-through link transmission according to the adjusted contention window.

The present disclosure provides a method, device and readable storage medium for determining a channel access mode, which are applied to wireless communication technology. The method includes: receiving at least two configuration information carrying a channel access mode from a network device; determining a first configuration information among at least two configuration information based on the at least two configuration information; and determining that the channel access mode of a user device is the channel access mode carried by the first configuration information. In the present disclosure, a user device receives multiple configuration information carrying a channel access mode, selects one configuration information from the multiple configuration information based on the multiple configuration information, and determines that the channel access mode of the user device is the channel access mode carried by the selected configuration information, so that when the user device receives multiple channel access modes indicated by the network device, it determines a reasonable channel access mode from them, thereby saving the power consumption of the user device while ensuring and improving the communication efficiency.

The invention provides a wireless communication method and terminal equipment. The method comprises: a terminal device determines to transmit first sideline data on a shared spectrum based on a first channel access mode and / or a second channel access mode, the first channel access mode being different from the second channel access mode, and the first sideline data being transmitted on the shared spectrum; the first channel access mode and the second channel access mode are channel access modes for monitoring the shared spectrum before the first sideline data is sent on the shared spectrum, and the possibility that the terminal equipment transmits the sideline data on the shared spectrum is improved.

Channel access methods and apparatuses, and a communication device and a storage medium, which belong to the technical field of wireless communications. A channel access method is executed by a station device, the station device being a zero-power-consumption device. The method comprises: performing channel access in an unlicensed spectrum by means of a first access category (501), wherein the first access category is one of at least one second access category corresponding to a zero-power-consumption device.