A multi-mode user equipment (UE) employing multiple radio access technologies (RATs) detects secondary cell group (SCG) failures in a cellular network. The UE implements a dynamic blocking mechanism to block the new radio (NR) cell associated with the SCG failure from being subsequently added as a secondary cell during a blocking period/cycle. In one example, the UE adds the NR cell to a block list and sets a blocking period for the NR cell. During the blocking period, the UE does not send a cell measurement report to the cellular network for the NR cell, which prevents/blocks the network from adding the NR cell as a secondary cell. The blocking period is associated with a minimum blocking duration and a maximum blocking duration. The blocking duration for the NR cell can be dynamically adjusted for the blocking period. For example, the UE dynamically increases the blocking duration for the NR cell for each instance of SCG failure detected by the UE during the blocking period. The UE unblocks the NR cell after the blocking period has expired, which configures the UE to send a cell measurement report for the NR cell upon receiving a request from the cellular network. The dynamic blocking mechanism implemented by the UE prevents the frequent addition and removal of an NR cell associated with an SCG failure, which enhances the overall user experience when accessing the cellular network.
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Ou, Todd; Zhang, Qin; and Sun, Xiantao, "Dynamic Blocking of 5G Cells in Non-Standalone Networks", Technical Disclosure Commons, (January 24, 2021)