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US 8,804,676 B2Granted
Scheduling method
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsMarten Ericson, Rutger Andersson, Mats Blomgren, Klas Johansson, Patrik Karlsson
Life of this patent
Estimating the term…
Abstract
In a cellular radio system, the number of TDM users per cell is limited. The cellular radio system can be a WCDMA system and in particular a WCDMA system employing an Enhanced Uplink (EUL). Other users in the cell are scheduled using CDM scheduling.
Claims8
A method of scheduling users by a base station, the method comprising:
- providing, by the base station, connections for user equipments (UEs) using the base station via a radio interface, wherein the base station supports both connections to the UEs via Code Division Multiplexed connections in a Code Division Multiplexed mode, and via Time Division Multiplexed connections in a Time Division Multiplexed mode, and wherein providing the connections for the UEs comprises:
- (a) scheduling, by the base station, a limited number of the UEs for a Time Division Multiplexed connection;
- and
- (b) scheduling, by the base station, remaining UEs for a Code Division Multiplexed connection, wherein
- step (a) comprises moving a UE from the Code Division Multiplexed mode to the Time Division Multiplexed mode in response to a determination that a user activity measurement is higher than a first threshold value, and
- step (b) comprises moving a UE to the Code Division Multiplexed mode from the Time Division Multiplexed mode in response to a determination that a user activity measurement is lower than a second threshold value.
3 more elements
A method of scheduling user equipments (UEs) by a base station, the method comprising:
- obtaining, by a base station, a measurement of a user activity level of a UE, the user activity level measuring a bit rate of traffic to or from the UE;
- determining, by the base station, whether the user activity level exceeds a first threshold or is below a second threshold;
- assigning, by the base station, a time division multiplexed (TDM) slot of the base station's cell to the UE in response to a determination that the user activity level exceeds the first threshold;
- and
- assigning, by the base station, a code division multiplexed (CDM) slot of the base station's cell to the UE in response to a determination that the user activity level is below the second threshold.
2 more elements
Dependencies are inferred from the claim text.