33 results about "Clear to send" patented technology

Methods and apparatuses for operating in multi-access point (AP) wireless networks are described herein. A method performed by an AP may include transmitting, using a set of resources, a multi-AP ready-to-send (RTS) frame to at least one other AP and a plurality of stations (STAs). The method may include transmitting another frame using a portion of the set of resources. The method may include receiving, using the portion of the set of resources, a clear-to-send (CTS) frame from at least one STA of the plurality of STAs in response to the another frame. The method may include transmitting, using the portion of the set of resources, a data frame to the at least one STA. The multi-AP RTS frame may include resource allocation information for the at least one other AP and the plurality of STAs.

A first station (STA) receives from a second STA, on a sub-7 GHz link, a cross-link Request to Send (XRTS) frame for reserving a mmWave link for transmission of a data frame by the second STA. In response to the XRTS frame, and based on the mmWave link being unavailable for transmission of the data frame by the second STA, first STA transmits to the second STA a response frame comprising one of: an acknowledgment of the XRTS frame; a denial to transmit on the mmWave link; or a grant of a service period (SP) on the mmWave link for transmission of the data frame by the second STA.

In a Wireless Local Area Network system, a reception STA can receive a request to send (RTS) frame. The RTS frame may include bandwidth information. The reception STA can perform clear channel assessment (CCA) on the basis of the bandwidth information. The reception STA can determine a transmission channel on the basis of the result of the CCA and information about preset multiple resource units (MRUs). The reception STA can transmit a clear to send (CTS) frame through the transmission channel. The transmission channel is one of the preset MRUs and may be a channel in which the CCA result is idle. The preset MRUs may include a first MRU composed of a first 996 tone RU, a second 996 tone RU, a third 996 tone RU, and a 484 tone RU.

Methods and apparatus for transmitting data (e.g., low latency data) by a wireless device. In a method, a wireless device determines to transmit a buffered data frame, and further determines that one or more conditions are met for utilizing Prioritized Enhanced Distributed Channel Access (P-EDCA) parameters to transmit the buffered data frame. The P-EDCA parameters include shortened backoff parameters in relation to legacy EDCA backoff parameters. The method additionally includes transmitting a defer signal (e.g., a Clear to Send frame) to initiate a P-EDCA contention window, and transmitting the data frame in accordance with the P-EDCA parameters for reception by a second wireless device. In certain embodiments, the P-EDCA contention window includes an RTS / CTS frame exchange with a second wireless device using the P-EDCA parameters.

A method for performing communications via a channel by a wireless communication device includes: in response to a physical layer protocol data unit (PPDU) with high priority traffic being expected to be transmitted, detecting whether the channel is idle; after detecting that the channel remains idle for an arbitration interframe space (AIFS), starting to perform a first backoff procedure; in response to a first backoff counter for the first backoff procedure reaching zero and the channel still being detected to be idle, transmitting a first request to send (RTS) frame via the channel, wherein a preamble of the first RTS frame is generated based on parameters dedicated to high-priority traffic; and in response to a clear to send (CTS) frame corresponding to the first RTS frame being received, transmitting the PPDU with the high priority traffic via the channel.

An access point includes a first interface that wirelessly communicates using a first band; a second interface that wirelessly communicates using a second band; and a controller that selects one type of request to send (RTS) / clear to send (CTS) control from among three mutually different types using at least one of the first interface and the second interface, and carries out the selected one type of RTS / CTS control with a terminal.

An access point includes a first interface that wirelessly communicates using a first band; a second interface that wirelessly communicates using a second band; and a controller that selects one type of request to send (RTS) / clear to send (CTS) control from among three mutually different types using at least one of the first interface and the second interface, and carries out the selected one type of RTS / CTS control with a terminal.

A station may receive a frame transmitted to a plurality of stations (STAs). The frame may indicate a first frequency resource allocated for the STA and a second frequency resource allocated for another STA of the plurality of STAs. The STA may transmit a data frame using the first frequency resource and receive an acknowledgement frame that acknowledges receipt of the data frame. The STA may receive a multi-user request to send (MU RTS) frame transmitted to the plurality of STAs and may subsequently transmit a clear to send (CTS) frame in response to receipt of the MU RTS frame. The RTS / CTS transmissions may occur prior to transmission of the data frame.

The application relates to a channel competition method and device, which can limit the station from frequently initiating competition, thereby reducing interference on other devices. In the method, a station acquires a channel competition rule and performs channel competition according to the channel competition rule, and the channel competition rule is a first rule, a second rule, a third rule or a fourth rule. The first rule comprises that the number of RTS frames sent during the running of each competition timer in a plurality of competition timers is less than or equal to a first threshold value; the second rule comprises that channel competition is performed after a target time length; the third rule comprises that the station is prohibited from sending a clear to send (CTS) frame with a destination address of the station; and the fourth rule comprises that the station transmits an RTS frame as an initial frame to start a TXOP before the MSD timer expires, and the number of started TXOPs is less than or equal to a second threshold value. The fourth rule further comprises at least one of the following: a CCA-ED threshold before the MSD timer expires is dot11OFDMEDThreshold, or a condition for resetting the MSD timer to 0 is not set.

The present disclosure provides systems, methods, and apparatus, for wireless communications that can be used to establish a restricted target wake time (TWT) session over a wireless medium. In some implementations, an access point (AP) establishes a restricted TWT session for one or more wireless stations (STAs) associated with latency-sensitive traffic, the restricted TWT session including a restricted TWT service period (SP) during which the AP reserves access to the wireless medium for only the one or more STAs associated with the latency-sensitive traffic. The AP transmits a clear to send (CTS) frame at the start of each restricted TWT SP, the CTS frame indicating to other STAs that the wireless medium is unavailable for the duration of the corresponding restricted TWT SP. The AP transmits latency-sensitive data to or receives latency-sensitive data from the one or more STAs during at least one restricted TWT SP.

Methods and apparatuses are described herein for increasing reliability in IEEE 802.11 networks. A first station (STA) may generate a set of configurations that meets reliability requirements of a traffic flow associated with a frame. Each of the set of configurations may comprise a number of replications of the frame, a channel bandwidth, and a modulation and coding scheme (MCS). The first STA may transmit, to a second STA, a plurality of request to send (RTS) frames over a plurality of channels. The first STA may receive, from the second STA, a plurality of clear to send (CTS) frames indicating whether the plurality of channels are available. The first STA may then select, based on the number of available channels, a first configuration from the set of configurations. The first STA may transmit, based on the first configuration, a plurality of copies of the frame simultaneously over the available channels.

The embodiment of the invention relates to a communication method, communication equipment and a communication system. The communication method comprises the following steps: station equipment determines to clear to send a CTS frame; wherein the CTS frame is sent in response to a multi-user request to send an MU-RTS frame; the CTS frame identifies whether aperiodic communication services of other wireless communication media exist in the station equipment or not; and sending the CTS frame, so that mutual interference between a Wi-Fi communication service and services of other wireless communication media is avoided, and the system vomiting amount is improved, so that the system is suitable for the UHR transmission requirement.

This disclosure provides methods, components, devices and systems for protection for enhanced long range (ELR) transmissions. Aspects more specifically relate request to send (RTS) and clear to send (CTS) signaling exchanges for configuration of an ELR physical layer protocol data unit (PPDU) that protects ELR RTS / CTS frames from interference. For example, a first wireless device may indicate, via a first frame, a modified network allocation vector (NAV) timeout duration that accounts for a full duration of an ELR frame. In some examples, the modified NAV timeout duration may be calculated to account for a difference in data rate of the ELR frame relative to non-ELR frames. For example, the first wireless device may transmit a first frame prior to an ELR RTS / CTS frame, and the first frame may indicate, via a duration field, the modified NAV timeout duration that is calculated in accordance with the ELR RTS / CTS frame.

Various techniques pertaining to a special dual clear-to-send (CTS) mode for improvement in collision avoidance in wireless communications are described. A first station (STA) transmits a request-to-send (RTS) and, in response, receives a first CTS from a second STA. The first STA waits to receive a second CTS from the second STA before transmitting data to the second STA responsive to the first CTS being of a first type and the second CTS being of a second type different from the first type. The first STA then transmits the data to the second STA upon passage of a waiting period.

The invention relates to a communication method executed at an access point (AP) device. The communication method comprises the following steps: receiving information of a client device associated with an expander device from the expander device connected with the AP device; obtaining information of a source device receiving a frame to detect a client device associated with the expander device; and in response to at least one of the client devices associated with the extender device being not detected within a time threshold, enabling a request to send and a send-to-send RTS / CTS mechanism to send data to the extender device. The disclosure also relates to an access point device, a communication method performed at an expander device, an expander device and a computer program product.

The present disclosure relates to a method and apparatus for supporting enhanced long range (ELR) transmission in a wireless LAN system. A station (STA) according to the present disclosure may: receive a multi-user request to send (MU-RTS) trigger frame; and on the basis of an information field included in the frame, transmit a clear to send (CTS) frame in an ELR PPDU format. The MU-RTS trigger frame may comprise PPDU format information of the CTS frame and modulation and coding scheme (MCS) information corresponding to an ELR PPDU. This enables the STA to mitigate CTS reception instability due to a difference in transmit power between downlink (DL) and uplink (UL). In addition, a plurality of STAs may reduce the possibility of collisions in a multi-user environment and reduce transmission delay by simultaneously transmitting ELR PPDU-based CTS frames. Therefore, the present technology improves the reliability and protection efficiency of RTS / CTS procedures and provides stable communication quality even in a high-density network environment.

The present application relates to an access point (AP) and an apparatus for use in an AP, where the apparatus includes processor circuitry configured to cause the AP to: receive a single user trigger frame (SU-TF) from a shared AP, where the SU-TF is used to allocate a time within a transmission opportunity (TXOP) of the shared AP to a plurality of communication stations including the AP, and where the SU-TF includes a duration field, where the duration field is configured to receive the SU-TF from the shared AP; the duration field indicates a duration in which contention is allowed, and only the plurality of communication stations are allowed to compete for the communication channel in the duration in which contention is allowed; and transmitting a clear to send (CTS) frame to the shared AP after receiving the SU-TF and before contending for the communication channel, where the CTS frame includes a Receiver Address (RA) field set as a Media Access Control (MAC) address of the shared AP.

A first access point (AP) receives from a second AP, during a transmission opportunity (TXOP) of the second AP, a first frame polling the first AP regarding receiving a first time allocation and a third AP regarding receiving a second time allocation within the TXOP. The first AP transmits to the second AP a second frame in response to the first frame, indicating that the first AP wishes to receive the first time allocation. The first AP receives from the second AP a third frame allocating the first time allocation to the first AP and transmits to the second AP a clear to send (CTS) frame in response to the third frame. Based on the first AP finishing communicating before an end of the first time allocation, the first AP transmits to the second AP a fourth frame, where the fourth frame comprises a TXOP return frame.

Examples described herein relate to a switch circuitry that includes circuitry to determine if a received packet comprises a control packet; circuitry to determine congestion metrics based on receipt of at least one control packet, wherein the at least one control packet comprises a Request To Send (RTS) or Clear To Send (CTS); and circuitry to transmit at least one of the congestion metrics in at least one packet to a sender and / or receiver network interface device.

Methods and apparatuses for operating in multi-access point (AP) wireless networks are described herein. A method performed by an AP may include transmitting, using a set of resources, a multi-AP ready-to-send (RTS) frame to at least one other AP and a plurality of stations (STAs). The method may include transmitting another frame using a portion of the set of resources. The method may include receiving, using the portion of the set of resources, a clear-to-send (CTS) frame from at least one STA of the plurality of STAs in response to the another frame. The method may include transmitting, using the portion of the set of resources, a data frame to the at least one STA. The multi-AP RTS frame may include resource allocation information for the at least one other AP and the plurality of STAs.

In a Wireless Local Area Network system, a reception STA can receive a request to send (RTS) frame. The RTS frame may include bandwidth information. The reception STA can perform clear channel assessment (CCA) on the basis of the bandwidth information. The reception STA can determine a transmission channel on the basis of the result of the CCA and information about preset multiple resource units (MRUs). The reception STA can transmit a clear to send (CTS) frame through the transmission channel. The transmission channel is one of the preset MRUs and may be a channel in which the CCA result is idle. The preset MRUs may include a first MRU composed of a first 996 tone RU, a second 996 tone RU, a third 996 tone RU, and a 484 tone RU.

The invention provides a method, equipment and a system for enhanced bandwidth negotiation. Some implementations more specifically relate to request to send (RTS) and clear to send (CTS) frame designs that support bandwidth negotiation over the revised version of IEEE 802.11 be according to the IEEE 802.11 standard and the achievable bandwidth range of the future several generations. In some implementations, a bandwidth negotiation frame, such as a CTS or RTS frame, may be configured to support bandwidth greater than 160 MHz. In some aspects, the bandwidth negotiation frame may follow a legacy control frame format. More specifically, one or more bits of a service field associated with the legacy control frame format may be forwarded to carry enhanced bandwidth information. In some aspects, a recipient of a bandwidth negotiation frame may interpret one or more bits of the service field to carry enhanced bandwidth information when the frame is transmitted by a non-legacy transmitting device.

A method includes receiving, by an access point (AP) device operating in dual bands, a request-to-send (RTS) frame from a peer wireless device. The method includes determining whether a channel-access period specified by the RTS frame exceeds a remaining on-channel time for a wireless band during time-division multiplexing transmission. The method includes, in response to the channel-access period of the RTS frame exceeding the remaining on-channel time, transmitting, by the AP device, a clear-to-send acknowledgement (CTS-A) frame that reserves the channel-access period for the AP device.

A wireless protocol allowing an AP to allocate time within a transmit opportunity (TXOP) to non-AP stations. The allocations are made under condition that the non-AP STA(s) will satisfy Access Class (AC) requirements communicated in a frame sent by the AP STA, such as within an MU RTS TXS Trigger frame. Upon receiving the frame, the non-AP responds on whether it can meet the conditions, such as within a Clear-To-Send (CTS) message. If the non-AP can meet the conditions, then it proceeds to transmit data (to the AP, or a peer non-AP). Otherwise, if it cannot meet the conditions, then the AP can communicate the allocation to another non-AP STA. There are also conditions for how the non-AP can aggregate data units into A-MSDUs.

A method for providing backhaul dynamic link distance for backhaul is disclosed. In one embodiment, the method includes propagating, by a network owner, a configured link distance parameter as part of beacon; using, by a mesh node joining the network, the configured link distance parameter for backhaul to set slot-time and Acknowledgement (ACK) / Clear To Send (CTS) timeout values before joining the network; wherein the configured link distance parameter for backhaul is part of a backhaul network profile.

Embodiments of the present application provide a communication method, a station (STA) device, an access point (AP) device, and a communication system. The communication method comprises: a target STA device receives, on a secondary channel, a multi-user request-to-send (MU-RTS) Trigger frame sent by a first AP device; and on the basis of whether an overlapping basic service set physical layer protocol data unit (OBSS PPDU) is detected before switching to the secondary channel, determining whether to respond to the MU-RTS Trigger frame. The MU-RTS Trigger frame comprises: first duration information of the first AP occupying the secondary channel; one or more first identification fields, each first identification field being used for identifying whether the secondary channel is a temporary channel; and a second identification field corresponding to each first identification field, the second identification field being used for identifying a channel on which the target STA sends a clear-to-send (CTS) frame used for responding to the MU-RTS Trigger frame. The embodiments of the present application further improve an access mechanism between a primary channel and a secondary channel to meet the transmission requirements of UHR.

A network device transmits, to a second network device, a first announcement message notifying that a transmission opportunity (TXOP) of the network device can be shared, wherein the network device and the at least one second network device are within one TXOP sharing group. The network device receives, from the second network device, a first request message requesting to share the TXOP. The network device transmits, to the second network device, a first response message granting or rejecting to share the TXOP. The first announcement message, the first request message and the first response message may be included in a control or action frame. The first announcement message may be included in a first multi-user request to sent (MU-RTS) transmission frame, the first request message is included in a multi-user clear to send (MU-CTS) frame, and the first response message is included in a second MU-RTS transmission frame.

This disclosure provides methods, components, devices and systems for protection for enhanced long range (ELR) transmissions. Aspects more specifically relate request to send (RTS) and clear to send (CTS) signaling exchanges for configuration of an ELR physical layer protocol data unit (PPDU) that protects ELR RTS / CTS frames from interference. For example, a first wireless device may indicate, via a first frame, a modified network allocation vector (NAV) timeout duration that accounts for a full duration of an ELR frame. In some examples, the modified NAV timeout duration may be calculated to account for a difference in data rate of the ELR frame relative to non-ELR frames. For example, the first wireless device may transmit a first frame prior to an ELR RTS / CTS frame, and the first frame may indicate, via a duration field, the modified NAV timeout duration that is calculated in accordance with the ELR RTS / CTS frame.

Coordinated-spatial reuse (CO-SR) transmission methods are provided. In a CO-SR transmission method, a transceiver of a sharing access point (AP) may transmit an announcement frame to a shared AP, the transceiver may receive a first block acknowledgement (BA) frame from a first station (STA) associated with the sharing AP, and the transceiver may transmit a dummy clear-to-send (CTS) frame before transmitting the next announcement frame in response to the first STA being a first legacy STA.