Scheduling method for multi-user mimo

A scheduling method for use in an MU-MIMO communication system allocating frequency- and space-divided carriers to users, the method being for performing scheduling for allocating carriers to users and comprising:

• computing a priority of each user for each carrier based on a reception Signal to Interference and Noise power Ratio of each of resource blocks forming a carrier;
• selecting a user with the maximum priority for an unallocated carrier;
• allocating the unallocated carrier to the user with the maximum priority;
• updating a projected channel vector of a carrier of an unselected user by GS orthogonalization to obtain an orthogonal coefficient if there is an unallocated carrier in the space axis direction, and computing a corrected Signal to Interference and Noise power Ratio by multiplying the reception Signal to Interference and Noise power Ratio of the unselected user by the orthogonal coefficient;
• computing a priority of the unselected user of the carrier based on the computed corrected Signal to Interference and Noise power Ratio;
• and
• allocating the unselected user with the maximum priority to the unallocated carrier in the space axis direction.

A scheduling method for use in an MU-MIMO communication system allocating frequency- and space-divided carriers to users, the method being for performing scheduling for allocating carriers to users and comprising:

• computing a priority of each user for each carrier based on a reception Signal to Interference and Noise power Ratio of each of resource blocks forming a carrier;
• selecting a user with the maximum priority for an unallocated carrier;
• allocating the unallocated carrier to the user with the maximum priority;
• updating a projected channel vector of a carrier of an unselected user by GS orthogonalization to obtain an orthogonal coefficient if there is an allowable next multiple MIMO layer in the space axis direction and there is no unallocated carrier on the frequency axis, and computing a corrected Signal to Interference and Noise power Ratio by multiplying the reception Signal to Interference and Noise power Ratio of the unselected user by the orthogonal coefficient;
• computing a priority of the unselected user for the carrier based on the computed corrected Signal to Interference and Noise power Ratio;
• and
• allocating the unselected user with the maximum priority to the unallocated carrier in the next multiple MIMO layer.