Patent ID: 8385280
Filing Date: 2013-02-26
Classification: H04L,H04W

Abstract:
1. A method for scheduling use of a downlink packet data traffic channel shared by a plurality of mobile and/or immobile stations, each station having a scheduling downlink transmission rate, the method comprising the steps of: receiving a channel quality indicator (CQI) for the downlink packet data traffic channel from a base station to each of said mobile/immobile stations, based on received CQIs for the downlink packet data traffic channel, determining a ranking metric for each of said mobile/immobile stations having queued data that varies with the mobile/immobile station's scheduling downlink transmission rate, and a delay factor indicative of the staleness of data queued for each of said mobile/immobile stations having queued data, determining an uplink metric, which is different from the CQI, for each of said mobile/immobile stations having queued data, wherein the uplink metric is a measure of an uplink load or an uplink noise rise of an uplink channel from one of the mobile/immobile stations to the base station, and scheduling one or more downlink transmissions to the mobile/immobile stations on the downlink packet data traffic channel based on said ranking metric and on said uplink metric, wherein said downlink packet data traffic channel is arranged to carry mixed traffic, such as audio signals, video signals, Voice over Internet Protocol (VoIP) and Session Initiation Protocol (SIP) signalling traffic, where the uplink channel is arranged to carry uplink information related to the mixed traffic.