Adaptive load prediction for interference suppression receivers
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorKarl Torbjörn Wigren
Life of this patent
Estimating the term…
Abstract
Load measurements having low computational complexity are provided that give an effective load after interference suppression. The effective load after interference may be compared with the air interface load to determine interference suppression gains for different user constellations. The interference suppression gains may be stored in the form of a gain table that gives the expected interference suppression gains for different user constellations. The expected interference suppression gains may be used by a scheduler at a base station to predict the effective load for two or more candidate user constellations, and to select one of the candidate user constellations. Users are then scheduled according to the selected user constellation.
Claims36
A method of scheduling uplink transmissions from a plurality of users to a base station in a wireless communication network, the method comprising:
- estimating interference suppression gains in received signals for two or more candidate user constellations defined by number of users and corresponding data rates;
- computing predicted loads for a scheduling interval for each of the two or more candidate user constellations as a function of the estimated interference suppression gains for the candidate user constellations;
- selecting one of the candidate user constellations for the scheduling interval based on the predicted loads
- scheduling uplink transmissions from a set of users according to the selected user constellation.
A base station in a wireless communication network, the base station comprising:
- an interference suppression receiver to suppress interference in received signals from a plurality of users;
- and
- a control circuit including a scheduler for scheduling uplink transmissions from the users, the scheduler being configured to:
- estimate interference suppression gains in received signals for two or more candidate user constellations defined by number of users and corresponding data rates;
- compute predicted loads for a scheduling interval for each of the two or more candidate user constellations as a function of the estimated interference suppression gains for the candidate user constellations;
- select one of the candidate user constellations for the scheduling interval based on the predicted loads;
- and
- schedule uplink transmissions from a set of users according to the selected user constellation.
Dependencies are inferred from the claim text.