Secondary Cell Activation via RRC Configuration

The patent applies preliminary action by pre-configuring the SCell in an activated state within the RRC connection reconfiguration message. Instead of adding the SCell in a deactivated state and then sending a separate activation command, the system performs the activation configuration in advance during the initial SCell addition process. This eliminates the need for subsequent activation commands and reduces the time delay while maintaining reliable activation through proper RRC configuration.

The patent merges the SCell addition process with the activation configuration by including the activation state indication directly in the RRC connection reconfiguration message. Instead of using separate signaling messages for addition and activation, the system combines these functions into a single configuration message, thereby reducing signaling overhead and simplifying the overall procedure while maintaining activation reliability through the integrated configuration approach.

The patent applies parameter changes by modifying the initial state parameter of the SCell configuration. By changing the default initial state from deactivated to activated (indicated through the appropriate information element in the RRC message), the system enables immediate data transmission on the SCell upon addition. This parameter change simplifies the overall configuration process and improves productivity without significantly increasing configuration complexity, as it leverages existing RRC configuration mechanisms.