Method and apparatus for user distribution to sub bands in NOMA systems
AssigneesInstitut Mines-Telecom / Telecom Bretagne, Universite Libanaise, Universite Saint-Esprit De Kaslik
InventorsMarie-Rita Hojeij, Joumana Farah, Charbel Abdel Nour, Catherine Douillard
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Abstract
A mechanism for attributing users to a plurality of sub bands in a time slot t in a multiple access communications system, said method comprising assigning a combination of users to a sub band on a Proportional Fairness basis, that is to say whichever combination of users maximizes a Proportional Fairness performance metric for that channel, where the performance metric is weighted by a weighting factor reflecting the difference for that user between a target throughput and a projected throughput.
Claims14
A user selection apparatus for use in a multiple access communications system for the selection of users from a pool of candidate users for allocation to one or more of a plurality of sub bands in a time slot t, said apparatus comprising at least one memory and one or more processors, the one or more processors being configured to:
- assign to each said sub band whichever combination of users maximizes a Proportional Fairness performance metric for that respective sub band wherein said performance metric is weighted by a weighting factor reflecting the difference for each user between a target throughput equal to a multiple (b) of the average throughout per user achieved across all sub bands over a predefined historical period preceeding current time slot t, and a projected throughput equal to the sum of the achievable throughputs for each said user on each sub band in current time slot t to which one or more said users had been attributed.
A method for attributing users to one or more of a plurality of sub bands in a time slot t in a multiple access communications system, said method comprising assigning to each said sub band whichever combination of users maximizes a Proportional Fairness performance metric for that respective sub band, wherein said performance metric is weighted by a weighting factor reflecting the difference for each user between a target throughput equal to a multiple (b) of the average throughput per user achieved across all sub bands over a second predefined historical period preceding current time slot t, and a projected throughput equal to the sum of the achievable throughputs for each said user on each sub band in current time slot t to which one or more said users has been attributed.
Dependencies are inferred from the claim text.