| 摘要 |
The present invention relates to radio communication and, specifically, to a radio resource allocation method in case radio resources are multi-layered. A radio resource allocation method according to one aspect of the present invention comprises the following steps of: (a) calculating a hierarchical modulation resource amount for each layer to perform hierarchical modulation of data for each of the two layers based on a specific constellation ratio and selecting a layer having a relatively small hierarchical modulation resource amount from the two layers; (b) calculating a non-hierarchical modulation resource amount to perform non-hierarchical modulation of data for an unselected layer; (c) calculating the sum of the hierarchical modulation resource amount of the layer selected in step (a) and the non-hierarchical modulation resource amount; and (d) performing step (a) or step (c) for designating all the constellation ratios and selecting a constellation ratio and a modulation method to minimize the sum. [Reference numerals] (AA) Start;(BB) Calculate BW_2;(CC) Calculate BW_3;(DD) Select a different constellation ratio 琯,쨉;(EE) Two layers requiring additional resources;(FF) End;(S4.1) Select an arbitrary constellation ratio 琯,쨉;(S4.2) Calculate BW_1;(S4.3) Select a minimum resource amount and determine the minimum resource amount as an QAM resource amount of 3 layers (BW_H64QAM);(S4.4) Calculate additional resources;(S4.4.1) Calculate a 16 QAM resource amount of two layers (BW_2layer & 16QAM);(S4.4.2) Calculate a 64 QAM resource amount of the two layers (Base: QPSK, Enhanced: 16 QAM);(S4.4.3) Calculate a 64 QAM resource amount of the two layers (Base: 16 QAM, Enhanced: QPSK);(S4.4.4.) Select a minimum resource amount;(S4.5) Calculate a total resource amount: (BW_3 layer);(S4.6) Are all constellation ratios considered?;(S4.7) Compare the total resource amount;(S4.8) Optimal resource allocaiton is performed in case the total resource amount is minimum |
