15 results about "Frame check sequence" patented technology

The present application provides a communication method and apparatus, the method comprising: generating a trigger frame, the trigger frame comprising a first frame check sequence (FCS) and a second FCS, in which the second FCS precedes the first FCS, the second FCS is continuous, a first portion of the second FCS being included in a first user information field in the trigger frame; sending a trigger frame; the second FCS can be verified more accurately by an FCS verification algorithm assuming that the FCS is continuous. The application supports an IEEE protocol, such as an IEEE 802.11 be / Wi-Fi 7 / EHT protocol, an IEEE 802.11 bn / UHR / Wi-Fi 8 protocol, an IMMW protocol, an IEEE 802.15 / UWB protocol, or an IEEE 802.11 bf protocol; the method can also support a satellite flash standard protocol.

The present disclosure provides implementations for receiving and processing packets in a wireless local area network (WLAN). A WLAN device, such as a station or an access point, may replace content in a received packet with predetermined content based on the received packet failing to pass a frame check sequence (FCS), and the WLAN device may attempt to process the packet. In this manner, the WLAN device may not need to wait for a new packet, and the transmitting device may not need to re-transmit the packet. In some aspects, a WLAN device stores first content of a first packet. The first packet may include a mask or table indicating fields to be replaced in the received frame and content to be included in those fields. The first packet may be generated from known settings of the WLAN or transmitting device or may be generated from previously received packets.

A wireless device may use UWB communications in connection-oriented mode to transmit data. In some embodiments, data subframes may be introduced into a MAC frame. In some embodiments, the data subframes contain a LL packet wrapped with its own delimiter, Data Message Payload information element, and frame check sequence. In some embodiments, the data subframes may also include a duplicated MAC header.

This invention relates to the field of communication technology, specifically to a collision detection method and related equipment for ultra-short-range shared medium networks. The method includes: a master node broadcasting downlink messages on a downlink channel, and slave nodes sending uplink messages within a shared uplink contention window; each slave node starting an acknowledgment response timer for each sent uplink message and waiting to receive an acknowledgment message from the master node; the master node performing frame check sequence verification on the received uplink messages, and if a verification error is found, sending a verification error alarm message to the slave node at the corresponding source address; the slave node determining a serious collision when the acknowledgment response timer expires, or determining a collision event when it receives a verification error alarm message; and the slave node executing a backoff strategy based on the collision detection results. This invention enables efficient and reliable collision detection without adding additional hardware receivers, reducing system costs and design complexity, and is suitable for ultra-short-range scenarios such as intra-robot communication.

According to an embodiment of the present disclosure an electronic device is provided. The electronic device includes memory storing instructions, and at least one processor operably coupled to the memory. The instructions, when executed by the at least one processor individually or collectively, cause the electronic device to: receive, from another electronic device, at least a first portion of a frame, the first portion including a preliminary frame check sequence (FCS) value, perform a first cyclic redundancy check (CRC) on bits included in the first portion of the frame occurring before the preliminary FCS value, based on the preliminary FCS value, and determine whether to continue reception of the frame based on a result of the first CRC.

The present disclosure provides methods, components, devices, and systems for beacon extension design. A wireless station can receive one or more beacon containers including a beacon extension container and can communicate one or more messages based on a section of the one or more beacon containers related to the wireless station. Each section can correspond to a respective device type. Each section can include a frame check sequence and a message integrity code corresponding to each respective section. The wireless station can receive a first beacon container according to a first periodicity and a second beacon container according to a second periodicity. The first periodicity and the second periodicity can have different values based on a device type of the wireless station. The beacon container can include a type-specific section corresponding to the device type. Each type-specific section can include a parameter or updated information of the wireless station.

Disclosed in the present application are a communication method and apparatus. The present application supports an IEEE protocol, such as an IEEE 802.11be / Wi-Fi7 / EHT protocol, an IEEE802.11bn / UHR / Wi-Fi8 protocol, an IEEE Integrated mmWave / IMMW protocol, an IEEE 802.15 / UWB protocol, or an IEEE 802.11bf / sensing protocol. The present application also supports a spark link / nearlink standard protocol. The method comprises: generating and sending a first MPDU, wherein the first MPDU comprises a plurality of pieces of data content and a plurality of first frame check sequences, the plurality of first frame check sequences being used for checking whether each of the plurality of pieces of data content is correctly transmitted or correctly received. The present application can reduce retransmission overheads.

This disclosure provides implementations for receiving and processing packets in a wireless local area network (WLAN). A WLAN device (such as a station or access point) may replace content in a received packet with predetermined content based on the received packet failing a frame check sequence (FCS), and the WLAN device may attempt to process the packet. In this manner, the WLAN device may not need to wait for a new packet, and the transmitting device may not need to retransmit the packet. In some aspects, the WLAN device stores a first content of a first packet. The first packet may include a mask or table indicating the fields to be replaced in a received frame and the content to include in those fields. The first packet may be generated from known settings of the WLAN or transmitting device or may be generated from a previously received packet.

The present application provides a communication method and apparatus. The method comprises: generating a trigger frame, wherein the trigger frame comprises a first frame check sequence (FCS) and a second FCS, the second FCS precedes the first FCS within the trigger frame, the second FCS is continuous, and a first part of the second FCS is included in a first user information field in the trigger frame; and sending the trigger frame, thereby enabling an FCS check algorithm that assumes an FCS to be continuous to check the second FCS more accurately. The present application supports IEEE protocols, such as an IEEE 802.11be / Wi-Fi 7 / EHT protocol, an IEEE 802.11bn / UHR / Wi-Fi 8 protocol, an IMMW protocol, an IEEE 802.15 / UWB protocol, or an IEEE 802.11bf protocol. The present application can also support a NearLink standard protocol.

The invention discloses a data communication method, device and system and a storage medium, and relates to the technical field of Ethernet communication, and the data communication method comprises the steps: firstly obtaining a plurality of data packets generated by an upper-layer application, and then constructing corresponding communication sub-packets according to the data length, the content and the check code of the data packets; and extracting a standard Ethernet frame header, inserting a combined identification field, splicing the communication sub-packets to the identification field in sequence, adding a frame verification sequence to generate a combined packet, and sending the combined packet to a receiving end. And the receiving end executes first integrity check through the frame check sequence, splits the communication sub-packets according to the merging identifier after the first integrity check passes, and executes second integrity check through the communication sub-packet check code to process the effective communication sub-packets. According to the invention, the redundancy overhead is reduced through merging and packaging of multiple small data packets, the equipment compatibility is guaranteed by the standard frame header, the anti-error-code capability is improved through double-layer verification, and the transmission efficiency and the anti-error-code performance of the small data packets can be optimized while the compatibility is considered.

This disclosure provides methods, devices, and systems for wireless communications. The present implementations more specifically relate to trigger frame designs that support early validation of trigger frames. In some aspects, an AP may transmit a trigger frame soliciting a trigger-based (TB) physical layer convergence protocol (PLCP) protocol data unit (PPDU) from one or more wireless stations (STAs), where the trigger frame includes one or more user information fields, an early frame check sequence (eFCS) following the user information fields, a series of padding bits following the eFCS, and a frame check sequence (FCS) following the series of padding bits. Each STA associated with the AP may receive and validate a first portion of the trigger frame based on the eFCS. Any non-solicited STAs that receive the trigger frame may enter a low power mode in response to validating the first portion of the trigger frame, without receiving the padding bits.

Methods and apparatus are described for generating Trigger frames including specialized User Info fields. In an example method, a first device generates a Trigger frame for soliciting a responsive physical layer (PHY) protocol data unit (PPDU). The Trigger frame of includes at least one User Info field carrying uplink scheduling information for at least one recipient wireless device. The Trigger frame further includes a plurality of Security User Info fields, the plurality of Security User Info fields carrying a packet number (PN) and message integrity check (MIC) value (PN+MIC value). In other examples, the Trigger frame may include User Info fields carrying an intermediate Frame Check Sequence (I-FCS) and / or feedback information. The first device subsequently transmits the Trigger frame for reception by the at least one recipient wireless device.

An electronic device includes a transceiver configured to receive, from another electronic device, at least a first portion of a frame, the first portion including a preliminary frame check sequence (FCS) value. The electronic device also includes a processor operably coupled to the transceiver. The processor is configured to, based on the preliminary FCS value, perform a first cyclic redundancy check (CRC) on bits included in the first portion of the frame occurring before the preliminary FCS value, and based on a result of the first CRC, determine whether to continue reception of the frame.

Disclosed are a method and device for operating in a wireless LAN system. The method according to an embodiment of the present disclosure comprises the steps in which: a first station (STA) receives a trigger frame including a field from a second STA; and the first STA decodes the trigger frame, wherein a padding field includes a common control subfield and an intermediate frame check sequence (FCS) subfield, and the common control subfield may include a first subfield related to whether at least one of a per-feature information subfield or a security information subfield is included in the padding field.

A technique involving a novel padding scheme in wireless communication is described. An apparatus (e.g., a station (STA)) performs wireless communication by: (a) generating and transmitting a physical-layer protocol data unit (PPDU); or (b) receiving and processing the PPDU. The PPDU includes a post-frame check sequence (post-FCS) padding following its frame check sequence (FCS) field.