Method and apparatus for receiving fragment as well as method and apparatus for transmitting fragment

A method for transmitting fragments, the method comprising:

• transmitting a first group of fragments to a receiver through a first channel, and suspending transmitting a second group of fragments to the receiver after the first group of fragments is transmitted;
• and
• receiving one or more first acknowledgement messages from the receiver through the first channel, wherein the receiver transmits the one or more first acknowledgement messages through the first channel after the first group of fragments is received.

An apparatus for transmitting fragments, the apparatus comprising:

• a transmitting module, configured to transmit a first group of fragments to a receiver through a first channel, and suspend transmitting a second group of fragments to the receiver after the first group of fragments is transmitted;
• and
• a receiving module, configured to receive one or a plurality of first acknowledgement messages from the receiver through the first channel, wherein the receiver transmits the one or more first acknowledgement messages through the first channel after the first group of fragments transmitted by the transmitting module is received.