15 results about "Clear to send" patented technology

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.

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.

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.

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.

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.

Methods and apparatuses for low latency enhancements for wireless networks are disclosed that can be used to establish restricted target wake time (TWT) sessions 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.