Transmitter Apparatus and Method for Transmitting Packet Data Units in a Communication System

A method of sensitivity-based transmitting of packet data units from a transmitter to one or more receivers comprising:

• scrambling and modulating consecutive packet data units belonging to two or more data flows or subflows to obtain corresponding modulated packet data units for transmission;
• transmitting a modulated packet data unit from one of the data flows or subflows at each transmit instance;
• and
• selecting the modulated packet data unit to be transmitted at each transmit instance based at least in part on comparing respective sensitivity values of the modulated packet data units that are candidates for transmission at each transmit instance, wherein the sensitivity value of each modulated packet data unit indicates its sensitivity to non-ideal transmitter characteristics.

A method of sensitivity-based transmitting of packet data units from a transmitter to one or more receivers comprising:

• scrambling and modulating consecutive packet data units from two or more data flows or subflows to obtain corresponding modulated packet data units;
• determining a sensitivity value for each modulated packet data unit reflecting its sensitivity to a non-ideal transmitter characteristic;
• comparing at each transmit instance the sensitivity values of modulated packet data units that are candidates for transmission at that transmit instance;
• and
• selecting for transmission at each transmit instance the modulated packet data unit having the lowest sensitivity value.

A transmitter apparatus in a communication system configured to perform sensitivity-based transmitting of packet data units to one or more receivers, said transmitter apparatus comprising:

• scrambling and modulating units configured to scramble and modulate consecutive packet data units belonging to two or more data flows or subflows to obtain corresponding modulated packet data units for transmission;
• and
• a scheduler configured to:
• instruct an associated transmitter to transmit a modulated packet data unit from one of the data flows or subflows at each transmit instance;
• and
• select the modulated packet data unit to be transmitted at each transmit instance based at least in part on comparing respective sensitivity values of the modulated packet data units that are candidates for transmission at each transmit instance, wherein the sensitivity value of each modulated packet data unit indicates its sensitivity to non-ideal characteristics of the associated transmitter.

A transmitter apparatus in a communication system configured to perform sensitivity-based transmitting of packet data units to one or more receivers, said transmitter apparatus comprising:

• scrambling and modulating units configured to obtain corresponding modulated packet data units from consecutive packet data units from two or more data flows or subflows;
• and
• a scheduler configured to:
• determine a sensitivity value for each modulated packet data unit reflecting its sensitivity to a non-ideal transmitter characteristic;
• compare at each transmit instance the sensitivity values of modulated packet data units that are candidates for transmission at that transmit instance;
• and
• select for transmission at each transmit instance the modulated packet data unit having the lowest sensitivity value.

A computer program product in a memory of a digital computer device residing in a transmitter apparatus, wherein the computer program product comprises program instructions for configuring the transmitter apparatus to:

• scramble and modulate consecutive packet data units from two or more data flows or subflows to obtain corresponding modulated packet data units;
• determine a sensitivity value for each modulated packet data unit reflecting its sensitivity to a non-ideal transmitter characteristic;
• compare at each transmit instance the sensitivity values of modulated packet data units that are candidates for transmission at that transmit instance;
• and
• select for transmission at each transmit instance the modulated packet data unit having the lowest sensitivity value.