Methods for configuring channel state information measurement in a communications system and communications apparatus utilizing the same

A method for configuring channel state information measurement in a communications system, comprising:

• determining a first sub-frame subset and a second sub-frame subset by a communications apparatus;
• transmitting a configuration message carrying information regarding the first and second sub-frame subsets to a peer communications apparatus by the communications apparatus;
• assigning the time for the peer communications apparatus to transmit a first and a second measurement result reporting messages by the communications apparatus.
• receiving a first measurement result reporting message carrying information regarding the first measurement result from the peer communications apparatus;
• and
• receiving a second measurement result reporting message carrying information regarding the second measurement result from the peer communications apparatus.

A method for configuring channel state information measurement in a communications system, comprising:

• receiving a configuration message carrying information regarding a first and a second sub-frame subsets from a communications apparatus;
• performing a first channel state information measurement at the sub-frame(s) comprised in the first sub-frame subset to obtain a first measurement result by a peer communications apparatus;
• performing a second channel state information measurement at the sub-frame(s) comprised in the second sub-frame subset to obtain a second measurement result by the peer communications apparatus;
• transmitting a first measurement result reporting message carrying information regarding the first measurement result to the communications apparatus by the peer communications apparatus;
• and
• transmitting a second measurement result reporting message carrying information regarding the second measurement result to the communications apparatus by the peer communications apparatus,
• wherein the time to transmit the first and the second measurement result reporting messages is determined by a predefined rule known to both the communications apparatus and the peer communications apparatus.