Patent ID: 8730973

Claim:
A method for scheduling uplink data of a user, applicable to semi-persistent scheduling in a multi-periodicity mode in the case of a third proportional configuration mode of uplink and downlink sub-frames, TDD Configuration 2 , in a 3GPP Long Term Evolution Time Division Duplex system, comprising: determining, by a processor, periodicities of semi-persistent scheduling in the multi-periodicity mode starting with respective uplink sub-frames in a 10 ms radio frame; and scheduling, by the processor, uplink new transmission of a user data packet in the periodicities of semi-persistent scheduling in the multi-periodicity mode starting with the respective uplink sub-frames in the 10 ms radio frame, wherein the periodicities are determined from different values of periodicity offsets, delta, for semi-persistent scheduling in the multi-periodicity mode starting with the respective uplink sub-frames in the 10 ms radio frame, and wherein the different values of delta are set for semi-persistent scheduling in the multi-periodicity mode starting with the respective uplink sub-frames in the 10 ms radio frame according to a ratio of uplink to downlink sub-frames and locations of the uplink sub-frames scheduled by a Physical Downlink Control Channel, PDCCH which comprises: the value of delta for semi-persistent scheduling in the multi-periodicity mode starting with the first uplink sub-frame in the 10 ms radio frame scheduled by the PDCCH is set as: Delta=1+number of DL sub-frames/2; and the value of delta for semi-persistent scheduling in the multi-periodicity mode starting with the second uplink sub-frame in the 10 ms radio frame scheduled by the PDCCH is set as: Delta=−1−number of DL sub-frames/2; or wherein the different values of delta are set for semi-persistent scheduling in the multi-periodicity mode starting with the respective uplink sub-frames in the 10 ms radio frame according to a ratio of uplink to downlink sub-frames and locations of the uplink sub-frames scheduled by a PDCCH comprises: the value of delta for semi-persistent scheduling in the multi-periodicity mode starting with the first uplink sub-frame in the 10 ms radio frame scheduled by the PDCCH is set as: Delta=−1−number of DL sub-frames/2; and the value of delta for semi-persistent scheduling in the multi-periodicity mode starting with the second uplink sub-frame in the 10 ms radio frame scheduled by PDCCH is set as: Delta=1+number of DL sub-frames/2; wherein the number of DL sub-frames is the number of sub-frames available to transmit downlink data in the 10 ms radio frame.