Method for coordinating transmissions between different communications apparatuses and communications apparatuses utilizing the same

1. A communications apparatus, comprising:

a controller module, generating a suggested sub-frame pattern describing suggested arrangement of one or more almost blank sub-frame(s) in one or more frame(s) and scheduling control signal and/or data transmissions according to the suggested sub-frame pattern; and

a transceiver module, transmitting at least a first signal carrying information regarding the suggested sub-frame pattern to a peer communications apparatus,

wherein the peer communications apparatus does not schedule data transmissions in the almost blank sub-frame(s);

wherein the first signal is transmitted in compliance with X2 protocol,

wherein the suggested sub-frame pattern is to indicate which almost blank sub-frame(s) are not scheduled the data transmissions for the peer communications.

2. The communications apparatus as claimed in claim 1 , wherein the transceiver module further receives a second signal carrying information regarding a predetermined sub-frame pattern describing predetermined arrangement of the almost blank sub-frame(s) from the peer communications apparatus, and the controller module generates the suggested sub-frame pattern based on the predetermined sub-frame pattern.

3. The communications apparatus as claimed in claim 2 , wherein the suggested sub-frame pattern is a subset of the predetermined sub-frame pattern.

4. The communications apparatus as claimed in claim 1 , wherein the controller module further obtains information regarding one or more victim user equipment(s) (UE) suffering interference from the peer communications apparatus, and schedules the control signal and/or data transmissions to transmit the control signal and/or data to the victim UE(s) in the almost blank sub-frame(s).

5. A communications apparatus, comprising:

a controller module, generating a predetermined sub-frame pattern describing arrangement of one or more almost blank sub-frame(s) in one or more frame(s) and scheduling control signal and/or data transmissions according to the predetermined sub-frame pattern, wherein the controller module does not schedule data transmission in the almost blank sub-frame(s); and

a transceiver module, transmitting at least a first signal carrying information regarding the predetermined sub-frame pattern to a peer communications apparatus, wherein the first signal is transmitted in compliance with X2 protocol;

wherein the predetermined sub-frame pattern is to indicate which almost blank sub-frame(s) are not scheduled the data transmissions.

6. The communications apparatus as claimed in claim 5 , wherein the controller modules schedules fewer control signal transmissions in an almost blank sub-frame than in a normal sub-frame.

7. The communications apparatus as claimed in claim 5 , wherein the transceiver module further receives a second signal carrying information regarding a suggested sub-frame pattern describing suggested arrangement of the almost blank sub-frame(s) from the peer communications apparatus, and the controller module updates the predetermined sub-frame pattern based on the suggested sub-frame pattern to obtain an updated sub-frame pattern.

8. The communications apparatus as claimed in claim 7 , wherein the transceiver module further transmits at least a third signal carrying information regarding the updated sub-frame pattern to the peer communications apparatus, and the controller module schedules the control signal and/or data transmissions according to the updated sub-frame pattern.

9. The communications apparatus as claimed in claim 5 , wherein the predetermined sub-frame pattern comprises a plurality of bits, each bit is utilized to describe whether a corresponding sub-frame is an almost blank sub-frame or a normal sub-frame.

10. A method for coordinating transmissions between different communications apparatuses, comprising:

generating a predetermined sub-frame pattern describing arrangement of one or more almost blank sub-frame(s) in one or more frame(s);

informing at least a peer communications apparatus about the predetermined sub-frame pattern, wherein the first signal is transmitted in compliance with X2 protocol, wherein the predetermined sub-frame pattern is to indicate which almost blank sub-frame(s) are not scheduled the data transmissions; and

scheduling control signal and/or data transmissions according to the predetermined sub-frame pattern.

11. The method as claimed in claim 10 , further comprising:

scheduling fewer control signal transmissions in the almost blank sub-frame(s) than in normal sub-frames.

12. The method as claimed in claim 10 , further comprising:

not scheduling data transmission in the almost blank sub-frame(s).

13. The method as claimed in claim 10 , further comprising:

obtaining information regarding a suggested sub-frame pattern describing suggested arrangement of the almost blank sub-frame(s) from the peer communications apparatus; and

updating the predetermined sub-frame pattern based on the suggested sub-frame pattern to obtain an updated sub-frame pattern.

14. The method as claimed in claim 13 , further comprising:

informing the peer communications apparatus about the updated sub-frame pattern; and

scheduling control signal and/or data transmissions according to the updated sub-frame pattern.