425 results about "Primary channel" patented technology

A first access point (AP) receives from a second AP a first frame comprising a multi-AP frequency channel assignment for a multi-AP transmission, the multi-AP frequency channel assignment comprising a first frequency channel allocated to the first AP for the multi-AP transmission. The first AP transmits a second frame on the first frequency channel during the multi-AP transmission, and, on condition that the first frequency channel is different from a primary channel of the first AP, transmits a portion of a preamble of the second frame, comprising the multi-AP frequency channel assignment, on the primary channel of the first AP.

Provided are a channel switching method, a wireless device, and a chip. The method is performed by an access point (AP). The method includes transmitting, on a primary channel, a first frame to a first station (STA), wherein the first frame is configured to instruct the first STA to switch from the primary channel to a first secondary channel. The method further includes: transmitting, on the primary channel, a second frame to a second STA, wherein the second frame is configured to instruct the second STA to switch from the primary channel to a second secondary channel. A standard of the first STA is different from or the same as a standard of the second STA.

An access point (AP) may enable and manage non-primary channel access (NPCA) with a station (STA). The AP and the STA may each specify various switching rules for triggering channel switch from a primary channel to a backup NPCA primary channel for NPCA operation, including rules regarding switching delays by which a switch may need to perform and rules regarding whether a primary channel is occupied by an overlapping basic service set (BSS). The AP and the STA may also exchange various frames that provide a capability indication regarding support for NPCA operation as well as one or more parameters and rules regarding the NPCA operation.

In a wireless local area network (WLAN) system, a transmission STA can transmit a PPDU via a 320 MHz channel, and a Medium Access Control (MAC) signal may be generated for the PPDU. The MAC signal may include puncturing pattern information and channel center frequency segment (CCFS) information for a 320 MHz band. The CCFS information may include a first CCFS field related to channel center frequency (CCF) information of a primary 160 MHz channel, and a second CCFS field related to CCF information of a 320 MHz channel.

Multi-Access Point, MAP, coordination is used to control secondary channel access of other BSSs when sharing a TXOP. A sharing AP transmits a MAP MU-RTS trigger frame reserving a TXOP and allocating the primary channel to its BSS and secondary channels to shared BSSs. The frame triggers a switching, at the shared AP and stations of the shared BSSs, from a primary channel access (PCA) scheme to a non-primary channel access scheme where medium access in the shared BSS is performed on the allocated secondary channel. The shared AP, once switched, transmits a CTS frame over the secondary channel and another CTS frame, repeating the allocation scheme, over the primary channel. Each shared BSS operates on its allocated secondary channel during the shared TXOP, independently to each other and to the sharing BSS operating on the primary channel. The stations switch back to the PCA scheme upon the TXOP ending.

The invention discloses a communication method, device and system and a storage medium, relates to the technical field of communication, and can ensure that all non-AP stations compete for a new TXOP at the same time after the TXOP is finished, and keep medium synchronization. The method comprises the following steps: a non-AP station obtains switching time indication information, and switches from a first channel to a second channel comprising a main 20MHz channel based on the switching time indication information. Wherein the first channel and the second channel are not overlapped, and the switching time is not later than the first time. The first moment is the latest moment when the non-AP station is switched from the first channel to the second channel. The first channel comprises one or more 20MHz channels used for communication between the non-AP station and the AP station in the current TXOP.

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 non-primary channel access switching conditions. Some aspects more specifically relate to first wireless communication device may receive an indication of a frame initiating a transmission opportunity associated with an upcoming data transmission on a first primary channel. In some examples, the first wireless communication device may switch to a second primary channel based on determining that a threshold duration has elapsed from an end of the frame initiating the transmission opportunity. In some examples, the first wireless communication device may receive an indication of a physical layer protocol data unit (PPDU) associated with an upcoming data transmission on the first primary channel. In some examples, the first wireless communication device may switch to a second primary channel based on a length of the PPDU satisfying a threshold value and on the PPDU being an inter-basic service set (inter-BSS) PPDU.

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.

The invention discloses a wireless communication control method and system based on a LoRa module, and relates to the technical field of wireless communication, and the method comprises the steps: configuring LoRa module communication parameters; rSSI and SNR monitoring is carried out on a currently used channel, and an optimal spreading factor parameter is evaluated and recommended; multi-channel optimization selection is carried out based on a spreading factor evaluation result, transmission capability evaluation is carried out on a selected channel, and an optimal main channel and an optimal standby channel are determined; analyzing and formulating a hierarchical resource scheduling strategy and a power consumption scheduling strategy based on the communication behavior data of the terminal node, and generating an active control instruction set; executing hierarchical access control and dynamic migration scheduling based on the active control instruction set, and executing a data transmission task; and counting performance indexes of each channel, and adjusting related control parameters to form adaptive optimization closed-loop control. According to the method, the channel adaptability is improved through real-time signal monitoring and spreading factor dynamic optimization, accurate resource configuration is realized based on a hierarchical scheduling strategy of behavior prediction, and the energy efficiency and robustness of the system are remarkably optimized.

This disclosure provides methods, components, devices and systems for indications for non-primary channel access. Various aspects relate generally to communicating an indication relating to a wireless device or signaling (such as a physical layer (PHY) protocol data unit (PPDU)) from an OBSS. Sharing the indication between wireless devices may facilitate non-primary channel access (NPCA). Some aspects more specifically relate to a first wireless device that may receive a portion of a PPDU communicated by a third wireless device in an OBSS. The portion of the PPDU may indicate that the third wireless device is included in the OBSS. The first wireless device may transmit a frame including an indication to a second wireless device. The first wireless device and the second wireless device may be included in a BSS and may utilize the indication to perform NPCA on an opportunistic primary channel.

Disclosed are a method and device operating in a wireless LAN system. The method performed by a first STA in a wireless LAN system according to an embodiment disclosed herein may comprise the steps of: receiving, from a second STA, an aggregated medium access control protocol data unit (A-MPDU) including a first trigger frame and a second trigger frame; and performing uplink transmission on the basis of the first trigger frame and the second trigger frame, wherein the first trigger frame includes first information indicating at least one resource unit (RU) within a primary channel bandwidth, and the second trigger frame includes second information indicating at least one resource unit (RU) within a secondary channel bandwidth.

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.

This disclosure provides methods, components, devices and systems for signal strength-based selection between spatial reuse or multi-primary channel communication modes. Some aspects more specifically relate to how an access point (AP) or station (STA) may select between a spatial reuse communication mode or a multi-primary channel communication mode in accordance with a threshold value and one or more signal strength measurements at the AP or STA. In some examples, the AP may transmit an indication of the threshold value to the STA. In some aspects, the AP or STA may select the spatial reuse communication mode in accordance with the signal strength measurement(s) at the AP or STA satisfying the threshold value. In some other aspects, the AP or STA may select the multi-primary channel communication mode in accordance with the signal strength measurement(s) at the AP or STA failing to satisfy the threshold value.

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.

Methods and apparatus for providing padding in relation to various padding requirements. In an example method, a wireless device receives padding requirement information from a second wireless device, the padding requirement information relating to one or more of a padding requirement for Control frame protection or MAC header protection, a padding requirement for switching from a low capability (LC) mode to a high capability (HC) mode, a padding requirement for switching from a primary channel to a secondary channel or Dynamic Sub-Channel Optimization (DSO) channel, or a padding requirement for switching from an Enhanced Multi-Link Single Radio (eMLSR) listening mode to a frame exchange mode. The wireless device generates a physical layer (PHY) protocol data unit (PPDU) including one or more padding fields in accordance with the padding requirement information received from the second wireless device. The wireless device further transmits the PPDU including the one or more padding fields for reception by the second wireless.

Disclosed herein is a method performed by a wireless device to perform non-primary channel access (NPCA). The method includes overhearing a control frame and a corresponding response frame transmitted in a primary channel in an overlapping basic service set (OBSS), extracting bandwidth information from a field of the control frame, determining an available non-primary channel based on a bandwidth indicated by the bandwidth information, and performing NPCA in the determined available non-primary channel in the BSS after overhearing the response frame.

The invention provides a non-primary channel access indication transmission method and equipment thereof. The non-primary channel access NPCA indication transmission method may include the following steps. A first multilink device (MLD) may establish a plurality of links with a second MLD. In a case where the first MLD detects that there is overlapping basic service set (OBSS) interference in a primary channel of a first link in the plurality of links, the first MLD may transmit an NPCA indication related to the first link to a second MLD in a second link in the plurality of links. The first MLD may transmit data with the second MLD in a non-primary channel of the first link according to the NPCA indication.

The embodiment of the invention provides a communication method and a communication device, which can enable a first station to receive an OBSS data packet on a first channel of an operation channel bandwidth and send a PPDU on a second channel, and further can reduce the interference of the transmission of the PPDU on the transmission of the OBSS data packet. The communication method comprises: a first station receiving an overlapped basic service set (OBSS) data packet on a first channel of an operation channel bandwidth, the first channel comprising a first main channel; and the first station sends a layer protocol data unit (PPDU) on a second channel of the operation channel bandwidth, the transmission of the PPDU satisfies a preset condition, and the preset condition is used for reducing the interference of the transmission of the PPDU on the transmission of the OBSS data packet.

An access point (AP) may enable and manage non-primary channel access (NPCA) with a station (STA). The AP and the STA may each specify various switching rules for triggering channel switch from a primary channel to a backup NPCA primary channel for NPCA operation, including rules regarding switching delays by which a switch may need to perform and rules regarding whether a primary channel is occupied by an overlapping basic service set (BSS). The AP and the STA may also exchange various frames that provide a capability indication regarding support for NPCA operation as well as one or more parameters and rules regarding the NPCA operation.

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.

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.

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.

The invention discloses a channel switching method and device, equipment and a storage medium, and relates to the field of wireless communication. The method comprises: sending a first frame to a first station STA in a primary channel, the first frame being used for indicating the first STA to switch from the primary channel to a first secondary channel. And the flexibility of channel switching is improved. The system of the first STA can be an old system before the UHR equipment, and can also be the UHR equipment and a new system after the UHR equipment, so that the old system equipment and the new system equipment can be respectively switched to the secondary channel to work, the load of the primary channel can be relieved, the channel utilization rate can be improved, particularly, the utilization rate of the secondary channel can be improved, and the resource waste can be reduced.

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.

Multi-Access Point, MAP, coordination is used to control secondary channel access of other basic service sets (BSS) when sharing a TXOP. A sharing AP transmits a MAP MU-RTS trigger frame reserving a TXOP and allocating the primary channel to its BSS and secondary channels to shared BSSs. The frame triggers a switching, at the shared AP and stations (STA) of the shared BSSs, from a primary channel access (PCA) scheme to a non-primary channel access scheme where medium access in the shared BSS is performed on the allocated secondary channel. The shared AP, once switched, transmits a clear-to-send (CTS) frame over the secondary channel and another CTS frame, repeating the allocation scheme, over the primary channel. Each shared BSS operates on its allocated secondary channel during the shared TXOP, independently to each other and to the sharing BSS operating on the primary channel. The stations switch back to the PCA scheme upon the TXOP ending. At a STA of a second BSS receive from a first AP managing a first BSS a control frame. In response to the control frame, switch from a PCA scheme to a non-primary channel access scheme.

Performing non-primary channel access procedures when channel bonding or multi-channel operation is intended to be performed by a station, and yet it is determined that the intended primary channel is busy. The station may then choose a non-primary channel to act in the manner of the primary channel, to perform wideband transmissions in an immediately subsequent transmission interval.

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.