Downlink scheduling across a cellular carrier aggregation
AssigneeDISH Wireless L.L.C.
InventorsMehdi Alasti, Siddhartha Chenumolu, Mariam Sorond
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Abstract
Various systems and methods for scheduling data transmissions from a base station to user equipment (UE) are presented. Channel quality indicator values that correspond to multiple UE may be determined for multiple carrier components of a cellular network's carrier aggregation. A scheduling matrix may be created that includes instantaneous data transfer rates for the UE. Elements within the scheduling matrix may be normalized by modifying instantaneous data transmission rates using average data transmission rates. Scheduling decisions for data transfers may be made for the UE based on the normalized scheduling matrix.
Claims18
A method for scheduling data transmissions from a base station to user equipment (UE), the method comprising:
- determining, by a cellular network, a plurality of channel quality indicator (CQI) values that correspond to a plurality of UE, wherein:
- for each UE of the plurality of UE, a CQI value of the plurality of CQI values is determined for each carrier component of a plurality of carrier components that make up a carrier aggregation;
- and
- determining, by the cellular network, an average data transfer rate for each UE of the plurality of UE;
- creating, by a scheduler system of the cellular network, a scheduling matrix comprising a plurality of elements storing a plurality of instantaneous data transfer rates based on the determined plurality of CQI values, wherein:
- each row of the scheduling matrix corresponds to a physical resource block (PRB) of a plurality of PRBs;
- each column of the scheduling matrix corresponds to a UE of the plurality of UE;
- and
- each PRB of the plurality of PRBs corresponds to one of the plurality of carrier components;
- normalizing, by the scheduler system of the cellular network, each element of the plurality of elements of the scheduling matrix by modifying the plurality of instantaneous data transfer rates based on a plurality of average data transfer rates, wherein:
- each average data transfer rate of the plurality of average data transfer rates corresponds to a UE of the plurality of UE mapped to the element of the plurality of elements;
- and
- making, by the scheduler system of the cellular network, scheduling decisions for the plurality of UE based on the normalized scheduling matrix.
A cellular network that schedules downlink data transmissions, the cellular network comprising:
- a base station that comprises a scheduler system, wherein the base station is configured to:
- determine a plurality of channel quality indicator (CQI) values that correspond to a plurality of UE, wherein:
- for each UE of the plurality of UE, a CQI value of the plurality of CQI values is determined for each carrier component of a plurality of carrier components that make up a carrier aggregation;
- and
- determine, an average data transfer rate for each UE of the plurality of UE;
- create a scheduling matrix comprising a plurality of elements storing a plurality of instantaneous data transfer rates, wherein:
- a first dimension of the scheduling matrix corresponds to a physical resource block (PRB) of a plurality of PRBs;
- a second dimension of the scheduling matrix corresponds to a UE of the plurality of UE;
- and
- each PRB of the plurality of PRBs corresponds to one of the plurality of carrier components;
- normalize each element of the plurality of elements of the scheduling matrix by modifying the plurality of instantaneous data transfer rates based on a plurality of average data transfer rates, wherein:
- each average rate of the plurality of average data transfer rates corresponds to a UE of the plurality of UE mapped to the element of the plurality of elements;
- and
- make scheduling decisions for the plurality of UE based on the normalized scheduling matrix.
Dependencies are inferred from the claim text.