The present disclosure relates to the field of wireless communication, and in particular to a method and arrangement for improving flow control interaction in a low latency distributed radio access network, RAN, including an upper layer RAN node and at least one lower layer RAN node. The method includes determining a Packet Data Convergence Protocol, PDCP, Protocol Data Unit, PDU, buffer dwell time target, BDTT, and providing the BDTT to the upper layer RAN node and/or the lower layer RAN node.

A method for indicating transmission of a buffered downlink data frame under multi-connection. An access point generates a message frame including first information and second information, and sends the message frame to a station. The first information is configured to indicate that a downlink data frame of the station is buffered at the access point, and the second information is configured to indicate the station to receive the downlink data frame buffered by the access point under multi-connection. A method for receiving a buffered downlink data frame under multi-connection is also disclosed.

A method for indicating transmission of a buffered downlink data frame under multi-connection. An access point generates a message frame including first information and second information, and sends the message frame to a station. The first information is configured to indicate that a downlink data frame of the station is buffered at the access point, and the second information is configured to indicate the station to receive the downlink data frame buffered by the access point under multi-connection. A method for receiving a buffered downlink data frame under multi-connection is also disclosed.

A data transmission method, a device, and a medium are provided. The data transmission method includes: sending first notification information to a second target device in a case that a wireless link between a relay terminal device and a first target device is abnormal. The first notification information is used to reduce data traffic transmitted from the second target device to the relay terminal device or to stop data transmission between the second target device and the relay terminal device.

Embodiments of this application disclose a method for determining a data buffer status, and an apparatus. The method includes: A first MLD receives first indication information from a second MLD, and determines, based on the first indication information and a correspondence between an association identifier of the first MLD and a data type supported by the first MLD, a buffer status of bufferable data that corresponds to the at least one data type and that is in the second MLD, where the first indication information is used to indicate the buffer status of the bufferable data. According to the embodiments of this application, a data buffer status in a data type dimension can be determined. The embodiments of this application may be applied to a wireless local area network system that supports a next-generation Wi-Fi EHT protocol of the IEEE 802.11, that is, the 802.11 protocol such as 802.11be.

Embodiments of this application disclose a method for determining a data buffer status, and an apparatus. The method includes: A first MLD receives first indication information from a second MLD, and determines, based on the first indication information and a correspondence between an association identifier of the first MLD and a data type supported by the first MLD, a buffer status of bufferable data that corresponds to the at least one data type and that is in the second MLD, where the first indication information is used to indicate the buffer status of the bufferable data. According to the embodiments of this application, a data buffer status in a data type dimension can be determined. The embodiments of this application may be applied to a wireless local area network system that supports a next-generation Wi-Fi EHT protocol of the IEEE 802.11, that is, the 802.11 protocol such as 802.11be.

A base wireless device includes plural transmission buffers storing plural signals having transmission destinations that are different from each other, a transmission processing unit transmitting the signals to plural remote wireless devices respectively, by transmitting the signals stored in the plural transmission buffers in a predetermined order, regardless of whether or not each transmission has been made successfully, and a storage control unit, wherein when a transmission of a signal stored in one of the transmission buffers has been made successfully, the storage control unit overwrites the one transmission buffer from which the transmission has been made successfully, with another signal to be transmitted to a transmission destination that is different from a transmission destination of a signal stored in a transmission buffer other than the one transmission buffer from which the transmission has been made successfully, among the plural transmission buffers.

Embodiments of the application provide a data transmission method and a device. A sending device periodically obtains a first packet sequence number and a second packet sequence number. The first packet sequence number is a maximum value in packet sequence numbers respectively corresponding to packets that belong to a first data flow and that are received by a receiving device through a first data channel in a statistics period. The second packet sequence number is a maximum value in packet sequence numbers respectively corresponding to packets that belong to the first data flow and that are received by the receiving device through a second data channel in the statistics period. The sending device updates a packet cache queue of: the first data channel, the second data channel, or both the first and the second data channels, based on the first packet sequence number and the second packet sequence number.

Embodiments of the application provide a data transmission method and a device. A sending device periodically obtains a first packet sequence number and a second packet sequence number. The first packet sequence number is a maximum value in packet sequence numbers respectively corresponding to packets that belong to a first data flow and that are received by a receiving device through a first data channel in a statistics period. The second packet sequence number is a maximum value in packet sequence numbers respectively corresponding to packets that belong to the first data flow and that are received by the receiving device through a second data channel in the statistics period. The sending device updates a packet cache queue of: the first data channel, the second data channel, or both the first and the second data channels, based on the first packet sequence number and the second packet sequence number.

An object is to provide a communication connection device and a communication connection method enabling priority forwarding processes in units of slice networks in addition to in units of communication flows. The RAN 100 is a communication connection device allocated to one or a plurality of slice networks each of which is a virtual network. The RAN 100 includes the storage unit 102 storing priority of performing a forwarding process for each communication flow representing a data forwarding unit and slice network, and the forwarding processing unit 104 forwarding data transmitted from the core network to the user terminal 50 according to the priority stored in the storage unit 102.