295 results about "Primary channel" patented technology

Methods, apparatuses, and computer readable media for basic service set (BSS) channel operation are disclosed. Apparatuses of a station (STA) are disclosed, where the apparatuses comprise processing circuitry configured to decode a first frame, the first frame comprising an extremely-high throughput (EHT) operation information field, the EHT operation information field comprising a channel width subfield and a channel center frequency segment, the channel width subfield indicating a basic service set (BSS) contiguous channel width, and the channel center frequency segment indicating a channel center frequency for the BSS channel width on which the BSS operates in 6 GHz. The processing circuitry further configured to encode for transmission a second frame for transmission on a primary channel within the BSS channel width.

This disclosure provides methods, components, devices and systems for operations between access points with different channel configurations. Some aspects more specifically relate to coordination between access points for allocating transmission opportunities when the access points may use the same or different primary channels and / or operating bandwidths. In some examples, coordination may include exchanging coordination information for a transmission opportunity via a primary channel when two access points are configured to utilize the same primary channel. In some examples, coordination may include signaling to indicate the primary channel to be used by the first access point, the second access point, or both when the first access point and the second access point are configured to use different primary channels. The respective primary channels may be used to exchange transmission opportunity coordination information.

A first station (STA) receives, via a primary channel (PCH), an extended long range (ELR) physical layer protocol data unit (PPDU). Based on failing to identify a basic service set (BSS) color from a first preamble of the ELR PPDU, the first STA receives a portion of a second preamble, following the first preamble, of the ELR PPDU to identify the BSS color. The BSS color identifies a BSS of which a second STA that transmits the ELR PPDU is a member. Based on the BSS color indicating that the ELR PPDU comprises an inter-BSS PPDU, the first STA switches, after receiving the portion, from the PCH to a non-primary channel access (NPCA) PCH.

A station (STA) includes a memory and a processor, the processor to cause receive, a frame associated with initiating a non-primary channel access (NPCA) operation from an access point (AP) that supports NPCA operation, the frame indicating a NPCA primary channel that the AP and the STA switch to for the NPCA operation. The processor is further to cause switching, at a switch time, from a basis service set (BSS) primary channel to the NPCA primary channel based at least in part on receiving the frame. The processor is further to cause initiating a transmission on the NPCA primary channel based on an enhanced distributed channel access (EDCA) parameters associated with the NPCA primary channel. The processor is further to cause an end of transmission on the NPCA primary channel and to cause switching to the BSS primary channel.

The invention provides a method, which comprises the following steps that: when a first device detects that a main channel is interfered, the first device sends a preamble part of a target frame to a second device on a main channel and a non-main channel access NPCA main channel, and sends a data part of the target frame to the second device on the NPCA main channel; wherein the first device is a station device, and the second device is an access point device; or the first device is an access point device, and the second device is a station device.

Circuitry and method are described for enabling multiple loads on a differential low voltage differential signaling pair (M-LVDS). A printed circuit board (PCB) contains a M-LVDS driver and leads that route a main channel that carries a differential signal from the driver to an area in which loads are populated. The main channel is split into branches that contain application-specific integrated circuits (ASICs) as the loads. The branches have the same characteristic impedance as the main channel. Filters are disposed in each branch and are coupled between the driver and the ASICs. Each filter is a first order or higher filter. Fewer filters than ASICs are on each branch, with the filters being disposed between the driver and ASICs closest to the driver (with smaller propagation delay). The filters are configured differently at each ASIC input to compensate for the delay.

A method is performed by a station (STA). The method includes the steps of receiving, from an access point (AP), an indication of whether to use a preamble detection NPCA channel switching approach or a control frame detection NPCA channel switching approach, overhearing a PPDU transmitted in a primary channel, and determining whether NPCA can be performed in a NPCA primary channel during transmission of the PPDU using the preamble detection NPCA channel switching approach or the control frame detection NPCA channel switching approach depending on the indication received from the AP.

Proposed are a method and device for receiving an A-PPDU in a wireless LAN system. Specifically, a reception STA receives an A-PPDU from a transmission STA and decodes the A-PPDU. The A-PPDU includes a first PPDU for a primary 160 MHz channel and a second PPDU for a secondary 160 MHz channel. A first signal field includes information about a bandwidth in which the first PPDU is transmitted. The information about the bandwidth in which the first PPDU is transmitted includes information about a first preamble puncturing pattern punctured in a unit of a 20 MHz channel in the primary 160 MHz channel. A second signal field includes information about a second preamble puncturing pattern.

The application belongs to the technical field of communication, and discloses a wireless communication terminal anti-interference method and system; each terminal is allocated a terminal identification code before data communication after accessing a network, and a main channel and a backup channel resource pool are specified; each terminal perceives the state of each channel in real time, records the terminal identification code of other terminals in the environment, the channel used by each terminal and the channel suffering from interference attack each time data transmission; each terminal independently adopts a given Q-learning algorithm to model the behavior of an interferer, predict an interference channel and finally select a channel according to the above information; if the main channel will not suffer from interference, the main channel is selected for the next data transmission, otherwise, a cyclic channel allocation calculation is made according to the terminal identification code, the predicted interference channel and the backup channel resource pool. The application effectively realizes anti-interference in the scene of multiple terminals, has low calculation complexity, does not need information interaction between terminals and is easy to realize.

The embodiment of the invention provides a frame synchronization method and device based on a WI FI system, and the method comprises the steps: carrying out the delay self-correlation of a short training sequence of a main channel and a secondary channel, carrying out the bandwidth detection of a current WI FI frame according to the delay self-correlation result of the main channel and the secondary channel, and when the bandwidth detection result of the current WI FI frame is greater than a specified bandwidth, carrying out the bandwidth synchronization of the current WI FI frame. And coarse synchronization is carried out according to a delay self-correlation result of the main channel and the secondary channel to obtain long training sequences of the main channel and the secondary channel, and a correlation peak is searched for a cross-correlation result of the long training sequences of the main channel and the secondary channel and a long training sequence of a local sequence to carry out fine synchronization so as to determine a symbol boundary of the current WIFI frame. According to the method and the device, the problems that only a main 20M channel is used, other channels are not used, and timing errors are deteriorated due to the length of the PPDU are solved, and the effects of improving the frame synchronization precision of the WI FI system and reducing the error code probability caused by the overlong length of the PPDU are achieved.

To establish a method for appropriately controlling transition to an NPCA primary channel in order to improve wireless medium use efficiency.SOLUTION: According to the present invention, a lower layer unit determines transition to an NPCA primary channel based on information (an NAV threshold value, a bandwidth threshold value, a received power threshold value, and the like) indicating one or a plurality of values notified by an NPCA (Non-PrimaryChannelAccess) information element, and thus it is possible to improve effectiveness of substantial frequency use efficiency at the time of transition to the NPCA primary channel.SELECTED DRAWING: Figure 12

A wireless communication method includes: generating a frame, and transmitting the frame during a dynamic subband operation (DSO) transmission opportunity (TXOP). Transmission of the frame triggers a first DSO non-access point station (non-AP STA) to perform a switch back procedure for switching from a non-primary channel of an access point (AP) to a primary channel of the AP.

Embodiments of the present disclosure provide a data packet sending method, and a data packet receiving method, an electronic device, and a computer program product. A first MAC sends a first instruction notification to a first PHY, the first instruction notification being used for instructing the first PHY to send a PPDU by means of a non-primary channel access mode.

A station (e.g. multi-link device (MLD)) of a BSS having an operating channel made of a primary channel and one or more secondary channels, one of the secondary channels being an anchor channel for NP

A first STA of a BSS detects an OBSS TXOP on its primary channel. The OBSS transmission meets the criteria for Spatial Reuse operations. The first STA transmits a NPCA switching frame to other STAs of the BSS, on its primary channel using the spatial reuse operation and a reduced transmit power. The frame indicates OBSS interference to those other STAs that are too far to detect it. The NPCA switching frame triggers a switching of channel access from PCA to NPCA at these other STAs. Next, the STAs perform NPCA operations on a NPCA primary channel, even if some of them have not directly detected the OBSS interference. An AP receiving the NPCA switching frame may, in response, transmit a similar switching frame to propagate the OBSS interference information and the switching trigger to yet other STAs too far from the first STA to receive the NPCA switching frame.

: Channel switching is a mechanism used to help cope with interference. To facilitate channel switching, there is provided a method which comprises detecting, by a first or second station (STA) and via a primary channel, an overlapping basic service set (OBSS) physical layer protocol data unit (PPDU). After detecting the OBSS PPDU, the method comprises switching, by first STA, from the primary channel to a non-primary channel access (NPCA) primary channel based on a first NPCA switching mode used by the first STA and transmitting, by the first STA to a second STA, which receives it, a first frame via a bandwidth comprising the NPCA primary channel, wherein a transmission time of the first frame is based on a second NPCA switching mode used by the second STA.

Embodiments of the present disclosure relate to a secondary channel communication method, a communication device, and a communication system. The secondary channel communication method comprises: a sending end receives a first message frame in a secondary channel, wherein the first message frame comprises: a first identifier indicating the duration of the first message frame; and the first identifier is set as the duration, sensed by a receiving end, in which an overlapping basic service set physical protocol data unit (OBSS PPDU) occupies a primary channel, or is the same as the duration identified by a second identifier of a second message frame sent by the sending end, so as to ensure that the duration of communication in the secondary channel is not greater than a network allocation vector (NAV) timer duration sensed or set in the primary channel, so that both the sending end and the receiving end can perform communication in the secondary channel, thereby meeting UHR transmission requirements.

Provided are steps in which, in a wireless LAN system, a first STA detects OBSS transmission on a primary channel and sets an NAV on the primary channel during a TXOP corresponding to the transmission in the OBSS, the first STA not performing an NPCA operation and a second STA, connected to the first STA, supporting the NPCA operation and operating by switching an operating channel from the primary channel to an NPCA channel during the TXOP corresponding to the transmission in the OBSS, and in which a CF-End frame transmitted from the OBSS is received, the CF-End frame indicating truncation of the TXOP of the OBSS and release of the NAV on the primary channel, wherein channel access is performed on the primary channel at a time point determined on the basis of a time point at which the second STA returns to the primary channel or a time point at which the TXOP of the OBSS is scheduled to end, such that a frame can be transmitted to the second STA.

This application discloses a transmission method and apparatus on a non-primary channel, a transmission method on a primary channel, and the method supports IEEE protocols, such as 802.11be / Wi-Fi 7 / Wi-Fi 8, IEEE 802.11bf / sensing protocol, or IEEE 802.15 / UWB protocol; the method can also support the StarFlash protocol. This method can be applied to scenarios where a site can switch between NPCA mode and PCA mode. The method includes: the AP switching to a non-primary channel; determining that the first moment when the backoff counter associated with the non-primary channel decrements to 0 is earlier than the second moment when the first site switches to the non-primary channel; determining that the non-primary channel is idle from the first moment to the second moment; and sending a first data packet to the first site on the non-primary channel at the second moment; to avoid packet loss caused by the first site not yet switching to the non-primary channel when the AP sends the first data packet to the first site.

Disclosed is a station for carrying out non-primary channel access (NPCA). The station comprises: a transmission / reception unit; and a processor. The processor carries out access on a non-primary channel, not a primary channel, when a predetermined condition is satisfied, and does not carry out non-primary channel access when an overlapping basic service set (OBSS) occupies the non-primary channel even if the predetermined condition is satisfied.

A station (STA) receives a first frame via a first channel and sets a first network allocation vector (NAV) associated with the first channel to a non-zero value based on the first frame. The STA transmits a second frame on a channel including the first channel and a second channel, and when the second frame is transmitted, the STA ignores the non-zero value of the first NAV under the condition that a second NAV associated with the second channel is zero.

This disclosure provides methods, components, devices and systems for non-primary channel access (NPCA) conditions for joint operation with coordinated access point (AP) procedures. Some aspects more specifically relate to preventing an NPCA-enabled station from switching to the secondary primary channel during a coordinated transmission messaging sequence. In some examples, a first AP may transmit, to the NPCA-enabled station, a first frame that indicates one or more parameters associated with a determination of whether to transition from the first primary channel to a secondary primary channel. Based on receiving the indication of the one or more parameters, the NPCA-enabled station may determine not to switch to the secondary primary channel, and may complete the coordinated transmission messaging sequence.

An architecture for transmitting data within an avionics system fitted to a vehicle, the architecture comprising a first field bus and a first avionics bus. According to the invention, the architecture comprises at least two primary channels each comprising: a primary field interface enabling communication between each primary channel via the first field bus, the field interfaces being interconnected with the first field bus; and a first avionics interface compatible with the first avionics bus. The architecture comprises at least one primary computer provided with a second avionics interface in communication via the first avionics bus with only one first avionics interface among the first avionics interfaces.

This application provides a communication method, apparatus, medium, and chip. By sending a first NPCA parameter indication message to a first STA to indicate the first STA's first NPCA parameters, the first NPCA parameters of the AP are used to indicate the AP's NPCA support capability and / or the AP's first NPCA operation parameters. The method also involves receiving a first NPCA parameter indication response message sent by the first STA. In other words, the AP informs the first STA of its own NPCA support capability and / or its own first NPCA operation parameters through the first NPCA parameter indication message, and the first STA informs the AP that it has received the AP's NPCA parameter indication message through the first NPCA parameter indication response message. This achieves NPCA parameter interaction, providing a basis for the AP to perform NPCA transmission on the corresponding NPCA main channel and bandwidth when interference occurs, thereby improving transmission efficiency.

A base station device, a terminal device, and a communication method are provided that realize efficient communication in a LAN-less system that performs non-primary channel access (NPCA). [Solution] In NPCA, an access point (AP) requests a Trigger Based PHY Protocol Data Unit (TB PPDU) from a station (STA), receives the requested TB PPDU from the STA on the NPCA primary channel, and the AP's PHY (physical layer) issues a PHY-RXSTART.indication primitive.

The present disclosure proposes a method and a device for configuring a bandwidth field by excluding a bit indicating a specific bandwidth for a TB A-PPDU in a wireless LAN system. Specifically, a reception STA receives a trigger frame from a transmission STA. The reception STA transmits a TB PPDU to the transmission STA via a 320 MHz band. A TB A-PPDU includes an HE TB PPDU for a primary 160 MHz channel and an EHT TB PPDU for a secondary 160 MHz channel. Information on a bandwidth of the TB PPDU does not include a first case where a bandwidth in which the HE TB PPDU is transmitted is 20 MHz and a bandwidth in which the EHT TB PPDU is transmitted is 20 MHz.

The present application relates to the technical field of wireless communications, and in particular to a communication method and a communication apparatus. Upon detecting a PPDU of a second BSS on a primary channel of a first BSS, a first station in the first BSS switches a channel for PD from the primary channel to a non-primary channel within an SP of the second BSS; and on the basis of an end time of the SP of the second BSS, switches the channel for performing PD from the non-primary channel to the primary channel. In this way, the BSS selects an appropriate channel for PD. The present application may support IEEE protocols such as an IEEE 802.11be / Wi-Fi 7 / EHT protocol, an IEEE 802.11bn / UHR / Wi-Fi 8 protocol, an IEEE integrated millimeter wave protocol, an IEEE 802.15 / UWB protocol, or an IEEE 802.11bf / sensing protocol; or may be applied to a NearLink system and support a NearLink protocol.

Dynamic Subband Operation (DSO) procedures and facilities are provided. A station (STA) receives a subband switching control frame from an access point (AP). The subband switching control frame indicates a transition by the STA to a secondary channel. In response to receiving the subband switching control frame, the STA switches from a primary channel to the secondary channel. The subband switching control frame specifies one or more channels in the secondary channel, and the one or more channels are a subset of the total available channels in the secondary channel.

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.