A packet reception method performed by a network component, wherein the method comprises the steps of: • receiving packets on a plurality of subflow connections of a multipath transmission control protocol, MPTCP, connection; • determining, based on the received packets, that packets at an MPTCP layer are out of order; • determining that a blocking packet causing the out-of-order is not received within a tolerance time, ∘ wherein the tolerance time is less than a largest retransmission timeout, RTO, in RTOs of the plurality of subflow connections, ∘ wherein the tolerance time is determined based on a largest round trip time, RTT, in RTTs of the plurality of subflow connections and an RTT of a subflow connection among the plurality of subflow connections in which a latest already received packet among the received packets is located, wherein the tolerance time is equal to 1/2 of (RTT max -RTT cur), wherein RTT max is the largest RTT in the RTTs of the plurality of subflow connections, and RTT cur is the RTT of the subflow connection in which the latest already received packet among the received packets is located; and • sending a retransmission instruction packet of the blocking packet on a target subflow connection among the plurality of subflow connections, wherein the retransmission instruction packet is used to instruct a sending device of the blocking packet to retransmit the blocking packet. • receiving packets on a plurality of subflow connections of a multipath transmission control protocol, MPTCP, connection; • determining, based on the received packets, that packets at an MPTCP layer are out of order; • determining that a blocking packet causing the out-of-order is not received within a tolerance time, ∘ wherein the tolerance time is less than a largest retransmission timeout, RTO, in RTOs of the plurality of subflow connections, ∘ wherein the tolerance time is determined based on a largest round trip time, RTT, in RTTs of the plurality of subflow connections and an RTT of a subflow connection among the plurality of subflow connections in which a latest already received packet among the received packets is located, wherein the tolerance time is equal to 1/2 of (RTT max -RTT cur), wherein RTT max is the largest RTT in the RTTs of the plurality of subflow connections, and RTT cur is the RTT of the subflow connection in which the latest already received packet among the received packets is located; and ∘ wherein the tolerance time is less than a largest retransmission timeout, RTO, in RTOs of the plurality of subflow connections, ∘ wherein the tolerance time is determined based on a largest round trip time, RTT, in RTTs of the plurality of subflow connections and an RTT of a subflow connection among the plurality of subflow connections in which a latest already received packet among the received packets is located, wherein the tolerance time is equal to 1/2 of (RTT max -RTT cur), wherein RTT max is the largest RTT in the RTTs of the plurality of subflow connections, and RTT cur is the RTT of the subflow connection in which the latest already received packet among the received packets is located; and • sending a retransmission instruction packet of the blocking packet on a target subflow connection among the plurality of subflow connections, wherein the retransmission instruction packet is used to instruct a sending device of the blocking packet to retransmit the blocking packet.