Methods for handling a transmitting process and communication apparatuses utilizing the same

A communication apparatus in a communication system, comprising:

• a power amplifier, coupled to an antenna, switching on or off according to a control signal;
• a radio transceiver module;
• a processor receiving a bit stream comprising information indicating corresponding transmitting time and sub-carrier frequencies of a plurality of up-link messages via the radio transceiver module, processing the bit stream to obtain a map profiling allocations of the up-link messages, and preparing the up-link messages to be transmitted according to the map;
• and
• a baseband module coupled to the processor, the power amplifier and the radio transceiver module, processing the up-link messages and generating the control signal according to the map, wherein within a data frame period, when there is no up-link message to be transmitted during a up-link time interval, the power amplifier is switched off in response to the control signal during the up-link time interval.

A method for handling a transmitting process of a communication apparatus in a communication system, wherein the communication apparatus comprises a power amplifier amplifying a plurality of up-link messages before the up-link messages are transmitted by an antenna, comprising:

• receiving a bit stream comprising information indicating corresponding transmitting time and sub-carrier frequencies of the up-link messages;
• preparing the up-link messages to be transmitted according to the information;
• generating a control signal to the power amplifier according to the information;
• and
• wherein the control signal indicates switching on the power amplifier during a first time interval of a data frame and switching off the power amplifier during a second time interval of the data frame, wherein during the second time interval of the data frame, there is no up-link message to be transmitted.