Efficient mac header design and communication using same

A transmitter for transmitting signals to a receiver, comprising:

• a processor for multiplexing a plurality of pieces of data for a plurality of connections to be transmitted to a specific receiver, and configuring a multiplexed Medium Access Control (MAC) Packet Data Unit (PDU) which includes a MAC header part for transmitting the multiplexed data and includes a MAC PDU payload including the multiplexed data;
• and
• a transmission module for transmitting the multiplexed MAC PDU to the specific receiver;
• wherein the MAC header part includes a first header part including a generic MAC header and includes a second header part including an extended header indicator serving as a one-bit indicator representing whether an extended header is present for each flow ID indicating each of the plurality of connections, and
• wherein the MAC header part selectively includes a third header part including the extended header for each flow ID according to the extended header indicator for each flow ID.

A method for receiving signals from a transmitter at a receiver, the method comprising:

• receiving, from the transmitter, a Medium Access Control (MAC) Packet Data Unit (PDU) obtained by multiplexing a plurality of pieces of data for a plurality of connections transmitted to the receiver;
• and
• processing, at a receiver processor, a multiplexed MAC PDU which includes a MAC header part of the MAC PDU and includes a MAC PDU payload containing the multiplexed data;
• wherein the MAC header part includes a first header part including a generic MAC header and includes a second header part including an extended header indicator serving as a one-bit indicator representing whether an extended header is present for each flow ID indicating each of the plurality of connections, and
• wherein the MAC header part selectively includes a third header part including the extended header for each flow ID according to the extended header indicator for each flow ID.

A receiver for receiving signals from a transmitter, comprising:

• a reception module for receiving, from the transmitter, a Medium Access Control (MAC) Packet Data Unit (PDU) obtained by multiplexing a plurality of pieces of data for a plurality of connections transmitted to the receiver;
• and
• a processor for processing a multiplexed MAC PDU which includes a MAC header part of the MAC PDU and includes a MAC PDU payload containing the multiplexed data;
• wherein the MAC header part includes a first header part including a generic MAC header and includes a second header part including an extended header indicator serving as a one-bit indicator representing whether an extended header is present for each flow ID indicating each of the plurality of connections, and
• wherein the MAC header part selectively includes a third header part including the extended header for each flow ID according to the extended header indicator for each flow ID.