Mobile communication apparatuses, wireless communication systems, femtocells and methods for resource allocation using the same

A wireless communication system, comprising:

• at least one first femtocell and one neighboring second femtocell;
• at least one first mobile communications device, camped on the first femtocell;
• a control node coupled on the first and second femtocells, performing data transmission and reception between the first and second femtocells;
• wherein the first femtocell or the control node determines a first group corresponding to the first femtocell and a second group corresponding to the second femtocell according to at least one SIR of the first and second femtocells measured by the first mobile communications device and a threshold, and sequentially performs a resource-allocation procedure on each group of an allocation group according to a specific allocation order;
• wherein the first group includes the first mobile communications device and when the measured SIR of the first and second femtocells which is measured by the first mobile communications device is less than the threshold, the first mobile communications device is included in the first group and the second group simultaneously and the first and second groups form the allocation group.

A method for resource allocation for use in a femtocell, comprising:

• transmitting a measurement request to at least one first mobile communications device, wherein the measurement request indicates the first mobile communications device to measure at least one signal-to-interference ratio (SIR) of the femtocell and at least one other femtocell neighboring the femtocell;
• receiving a measurement report corresponding to the measurement request from the first mobile communications device, wherein the measurement report includes the SIR of the femtocell and the neighboring femtocell measured by the first mobile communications device;
• determining a first group corresponding to the femtocell and a second group corresponding to the neighboring femtocell according to the SIR of the femtocell and the neighboring femtocell and a threshold, wherein the first group includes the first mobile communications device and when the measured SIR of the first and second femtocells that is measured by the first mobile communications device is less than the threshold, the first mobile communications device is included in the first group and the second group simultaneously, and the first and second groups form an allocation group;
• and
• sequentially performing a resource-allocation procedure on each group of the allocation group according to a specific allocation order.

A wireless communications device for performing measurements required for resource allocation, comprising:

• a wireless module, performing wireless transmission and reception to and from a service network comprising at least one first femtocell, one second femtocell neighboring the first femtocell and a control node;
• and
• a controller module, receiving a measurement request from the first femtocell or the control node via the wireless module, requesting the wireless module to detect a plurality of signal strengths respectively between the first femtocell and the second femtocell in response to the measurement request, obtaining at least one signal-to-interference ratio (SIR) of the first and second femtocells measured by the mobile communications device and transmitting a measurement report including the measured SIR of the first and second femtocells to the control node or the first femtocell via the wireless module such that the control node or the first femtocell determines whether to perform a group updating task according to the measured SIR of the first and second femtocells and a threshold;
• wherein when the measured SIR of the first and second femtocells is less than the threshold, the controller module transmits a connection request to the first femtocell via the wireless module to request the second femtocell to perform the group updating task, and the first femtocell and the second femtocell simultaneously add the wireless communications device into a first group of the first femtocell and a second group of the second femtocell to perform a group-wised resource allocation.

A femtocell for performing resource allocation, comprising:

• a wireless module, transmitting a measurement request to at least one first mobile communications device, wherein the measurement request indicates the first mobile communications device to measure at least one signal-to-interference ratio (SIR) of the femtocell and at least one other femtocell neighboring the femtocell;
• and
• a controller module, receiving a measurement report corresponding to the measurement request from the first mobile communications device via the wireless module, wherein the measurement report includes the SIR of the femtocell and the neighboring femtocell measured by the first mobile communications device, determining a first group corresponding to the femtocell and a second group corresponding to the neighboring femtocell according to the SIR of the femtocell and the neighboring femtocell and a threshold, and sequentially performing a resource-allocation procedure on each group of the allocation group according to a specific allocation order;
• wherein the first group includes the first mobile communications device, and when the measured SIR of the first and second femtocells that is measured by the first mobile communications device is less than the threshold, the first mobile communications device is included in the first group and the second group simultaneously and the first and second groups form an allocation group.