Acknowledgment packet sending method and device

An apparatus, comprising at least one processor coupled with a non-transitory storage medium storing executable instructions;

• wherein the executable instructions, when executed by the processor, cause the apparatus to:
• receive at least one data packet from a peer communications device;
• send a first transfer control protocol (TCP) acknowledgment packet in response to the at least one data packet;
• when the first TCP acknowledgment packet does not carry data information, discard the first TCP acknowledgment packet;
• and
• when the first TCP acknowledgment packet does carry data information, determine, according to a sending status of a first radio link protocol (RLC) acknowledgment packet sent by a second processor, whether to send the first TCP acknowledgment packet to the peer communications device, and perform corresponding processing according to a result of the determining whether to send the first TCP acknowledgment packet to the peer communications device, including:
• when a current moment is a sending occasion of the first RLC acknowledgment packet, determine not to send the first TCP acknowledgment packet to the peer communications device, add first TCP acknowledgment information in the first TCP acknowledgment packet to the first RLC acknowledgment packet whose sending occasion is the current moment, and send, to the peer communications device, the first RLC acknowledgment packet to which the first TCP acknowledgment information is added;
• or
• when a current moment is not a sending occasion of the first RLC acknowledgment packet, determine to send the first TCP acknowledgment packet to the peer communications device, and send, to the peer communications device, the first TCP acknowledgment packet or the first TCP acknowledgment packet that is obtained after information deletion is performed on the first TCP acknowledgment packet,
• wherein the RCL acknowledgment packet includes a protocol data unit (PDU) Type field that indicates that the RLC acknowledgment packet includes TCP acknowledgment information, a superfield (SUFI) field that is used to carry RLC layer acknowledgment information, and padding information;
• and
• after the at least one data packet is sent to the peer communications device, receive a second RLC acknowledgment packet sent by the peer communications device, and send a second TCP acknowledgment packet according to the second RLC acknowledgment packet when it is determined, according to the second RLC acknowledgment packet, that the second TCP acknowledgment packet needs to be sent.

An apparatus for communicating with a peer communications device, the apparatus comprising:

• a transmitter;
• a receiver configured to receive at least one data packet from the peer communications device;
• a first processor configured to send a first transfer control protocol (TCP) acknowledgment packet to a second processor in response to the at least one data packet;
• wherein the second processor is configured to:
• when the first TCP acknowledgment packet does not carry data information, discard the first TCP acknowledgment packet, and
• when the first TCP acknowledgment packet does carry data information, determine, according to a sending status of a first radio link protocol (RLC) acknowledgment packet sent by the second processor of the communications device, whether to send the first TCP acknowledgment packet to the peer communications device, and perform corresponding processing according to a result of the determining whether to send the first TCP acknowledgment packet to the peer communications device, including:
• when a current moment is a sending occasion of the first RLC acknowledgment packet, determine not to send the first TCP acknowledgment packet to the peer communications device, and add first TCP acknowledgment information in the first TCP acknowledgment packet to the first RLC acknowledgment packet whose sending occasion is the current moment, and wherein the transmitter is configured to send, to the peer communications device, the first RLC acknowledgment packet to which the first TCP acknowledgment information is added;
• or
• when a current moment is not a sending occasion of the first RLC acknowledgment packet, determine to send the first TCP acknowledgment packet to the peer communications device, and wherein the transmitter is configured to send, to the peer communications device, the first TCP acknowledgment packet or the first TCP acknowledgment packet that is obtained after information deletion is performed on the first TCP acknowledgment packet,
• wherein the RCL acknowledgment packet includes a protocol data unit (PDU) Type field that indicates that the RLC acknowledgment packet includes TCP acknowledgment information, a superfield (SUFI) field that is used to carry RLC layer acknowledgment information, and padding information;
• and
• wherein after the transmitter sends at least one data packet to the peer communications device, the receiver is further configured to receive a second RLC acknowledgment packet sent by the peer communications device, and the second processor is further configured to send a second TCP acknowledgment packet to the first processor according to the second RLC acknowledgment packet when it is determined, according to the second RLC acknowledgment packet, that the second TCP acknowledgment packet needs to be sent.