FIELD: radio engineering, communication.
SUBSTANCE: invention relates to wireless communication systems and more specifically to control signals. A physical downlink control channel (PDCCH) is communicated using a method which restrains UE from decoding the PDCCH at multiple aggregation levels. Ambiguous payload sizes are identified and modified through zero padding with one or more bits based on the payload size. Aggregation level scrambling sequences can be generated such that receiving UE can accurately identify the aggregation level on which to decode the PDCCH. Indicator bits that signal the aggregation level to UE can also be included in the PDCCH.
EFFECT: reliable exchange of control signals to implement efficient wireless communication systems.
18 cl, 16 dwg
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