PDCCH Blocking in LTE

In LTE, the Physical Downlink Control Channel (PDCCH) is used to carry control information for the downlink, such as scheduling assignments and hybrid automatic repeat request (HARQ) feedback. PDCCH blocking can occur when the network is overloaded and there are more scheduling assignments or control messages to be transmitted than there are available resources on the PDCCH. This can lead to delays in the transmission of control information, which can negatively impact the performance of the network. PDCCH blocking can also occur when there is interference on the channel or when there are problems with the channel quality.


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