PHYSICAL DOWNLINK CONTROL CHANNEL DECODING

摘要

Methods and apparatuses to reduce resource consumption by a mobile wireless device when decoding control channel information, such as a physical downlink control channel (PDCCH), in a subframe received from an LTE wireless network are disclosed. Representative methods include demodulating a first set of one or more PDCCH OFDM symbols contained in the subframe based on a first channel estimate; obtaining a second channel estimate based on a second OFDM symbol before demodulating a second set of one or more PDCCH OFDM symbols contained in the subframe based on both the first channel estimate and the second channel estimate. When the PDCCH indicates no downlink assignments for the subframe, the mobile wireless device enters a reduced power consumption mode after demodulating the PDCCH.

主权项

1. A method to reduce resource consumption by a wireless communication device when decoding a physical downlink control channel (PDCCH) in a subframe, the method comprising:
at the wireless communication device: obtaining a first channel estimate based on a first orthogonal frequency-division multiplexing (OFDM) symbol of the subframe; demodulating a first set of one or more PDCCH OFDM symbols contained in the subframe based on the first channel estimate; obtaining a second channel estimate based on a second OFDM symbol of the subframe before demodulating a second set of one or more PDCCH OFDM symbols contained in the subframe; and demodulating the second set of one or more PDCCH OFDM symbols based on both the first channel estimate and the second channel estimate.