Dynamic radio link adaptation for interference in cellular systems
AssigneeInterDigital Technology Corporation
InventorGuodong Zhang
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Abstract
A method and strategy by which cellular networks can dynamically adapt a radio link according to changing conditions of interference. In particular, the method applies to uplink time slots in UMTS-TDD systems. A preferred embodiment describes performing dynamic link adaptation when a UE has two CCTrCHs in an uplink time slot. The method and strategy of the invention are applicable for UMTS-FDD, CDMA-2000, and other systems as well.
Claims32
A dynamic link adaptation technique employed in a cellular system by a user equipment (UE) having two (2) coded composite transport channels (CCTrCHs) in an uplink time slot, comprising:
- estimating transmit power using a transport format combination (TFC) pair for the CCTrCHs;
- comparing total estimated transmit power for two CCTrCHs with a given threshold;
- and
- permitting use of both TFCs when the total estimated power is less than the threshold.
A dynamic link adaptation apparatus for use in a cellular system by a user equipment (UE) having two (2) coded composite transport channels (CCTrCHs) in an uplink time slot, comprising:
- means for estimating transmit power using a transport format combination (TFC) pair for the CCTrCHs;
- means for comparing total estimated transmit power for two CCTrCHs with a given threshold;
- and
- means for permitting use of both TFCs when the total estimated power is less than the threshold.
Dependencies are inferred from the claim text.