Resource allocation method for multi-users multiple input multiple output orthogonal frequency division multiplexing system and apparaus thereof
AssigneesIndustrial Technology Research Institute, National Chiao Tung University
InventorsLi-Chun Wang, Chu-Jung Yeh
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Abstract
The present invention is direct to the resource allocation method for MU-MIMO-OFDM system and the apparatus thereof. The MU-MIMO-OFDM system has a plurality of users and a plurality of sub-channels. The sub-channels are assigned to the users according to the capacity ratio constraints and a scheduling rule, and then the power of the user is determined according to the limit power of the MU-MIMO-OFDM system. Wherein the values of power of the sub-channels assigned to the user are the same, the scheduling rule may be Max-Min or Max Sum-Rate rule, and the allocation of the sub-channels may be user-oriented or sub-channel oriented.
Claims29
A resource allocation method for a MU-MIMO-OFDM system, the MU-MIMO-OFDM system has a plurality of users and sub-channels, and the method comprises:
- a plurality of preset assigned sub-channel numbers are assigned to the users according a plurality of capacity ratio constraints;
- each user sequentially selects one of the sub-channels according to a scheduling rule;
- determining one of the users who has a right of selecting the non-assigned sub-channels according to a plurality of assigned capacities and the capacity ratio constraints of the users, and then the user who has the right of selecting the non-assigned sub-channels selects one of the non-assigned sub-channels according to the scheduling rule, if the number of the sub-channels assigned to the user is equal to the preset assigned sub-channel number thereof, the user exits the competition of determining the right of selecting the non-assigned sub-channels in the step;
- determining if the number of the sub-channels assigned to the all of the users is equal to the summation of the preset assigned sub-channel numbers of all of the users;
- and
- determining one of the users who has the right of selecting the non-assigned sub-channels according to the assigned capacities and capacity ratio constraints of the users, and then the user who has the right of selecting the non-assigned sub-channels selects one of the non-assigned sub-channels according to the scheduling rule, the step is repeated until all of the sub-channels are assigned to the users.
A resource allocation apparatus for a MU-MIMO-OFDM system, the MU-MIMO-OFDM system has a plurality of users and sub-channels, and the resource allocation apparatus comprises:
- a sub-channel resource allocation apparatus;
- wherein the sub-channel resource allocation apparatus first assigns a plurality of preset assigned sub-channel numbers to the users according a plurality of capacity ratio constraints;
- next, the sub-channel resource allocation apparatus assigns one of the sub-channels to each user sequentially according to a scheduling rule;
- next, the sub-channel resource allocation apparatus assigns each of the non-assigned sub-channels to one of the users who has a right of selecting the non-assigned sub-channels according to the scheduling rule until the number of the sub-channels assigned to all of the users meets the summation of the preset assigned sub-channel numbers of all of the users;
- and next, the sub-channel resource allocation apparatus assigns each of the non-assigned sub-channels to one of the users who has a right of selecting the non-assigned sub-channels according to the scheduling rule until all non-assigned sub-channels assigned.
A resource allocation method for a MU-MIMO-OFDM system, the MU-MIMO-OFDM system has a plurality of users and sub-channels, and the method comprises:
- a plurality of preset assigned sub-channel numbers are assigned to the users according a plurality of capacity ratio constraints;
- each of the first through x-th sub-channels sequentially selects one of the users according to a scheduling rule, if the number of the sub-channels assigned to the user is equal to the preset assigned sub-channel number thereof, the user exits the competition to be assigned one of the sub-channels in the step, wherein x is the summation of the preset assigned sub-channel numbers;
- and
- each of the non-assigned sub-channels sequentially selects one of the users according to a scheduling rule, wherein the user is assigned at most one of the non-assigned sub-channels in the step.
A resource allocation apparatus for a MU-MIMO-OFDM system, the MU-MIMO-OFDM system has a plurality of users and sub-channels, and the resource allocation apparatus comprises:
- a sub-channel resource allocation apparatus;
- wherein the sub-channel resource allocation apparatus first assigns a plurality of preset assigned sub-channel numbers to the users according a plurality of capacity ratio constraints;
- next, the sub-channel resource allocation apparatus sequentially assigns each of the first through x-th sub-channels to one of the users according to a scheduling rule, wherein x is the summation of the preset assigned sub-channel numbers;
- and next, the sub-channel resource allocation apparatus sequentially assigns each of the non-assigned sub-channels to one of the users according to a scheduling rule, wherein the user is assigned at most one of the non-assigned sub-channels.
A resource allocation method for a MU-MIMO-OFDM system, the MU-MIMO-OFDM system has a plurality of users and sub-channels, and the method comprises:
- each of the sub-channels sequentially selects one of the users according to a scheduling rule.
A resource allocation apparatus for a MU-MIMO-OFDM system, the MU-MIMO-OFDM system has a plurality of users and sub-channels, and the resource allocation apparatus comprises:
- a sub-channel resource allocation apparatus, for sequentially assigning each of the sub-channels to one of the users according to a scheduling rule.
Dependencies are inferred from the claim text.