ACB Skip Indication for Wireless Service Availability

The patent applies local quality by differentiating ACB treatment between different services. Specifically, it introduces service-specific ACB skipping mechanisms where certain services (MMTEL voice, video, SMS) can bypass ACB checks while other services continue to undergo standard ACB procedures. This is implemented through service identification at the upper layer and selective indication to the RRC layer to skip ACB for specific service types, thereby maintaining network access control for general services while ensuring high availability for priority services.

The patent implements preliminary action by pre-configuring the system with service identification capabilities at the upper layer. Before the RRC connection establishment process begins, the system identifies whether the incoming service request belongs to a service type that should skip ACB (such as MMTEL voice, video, or SMS). This preliminary identification allows the RRC layer to bypass ACB checks entirely for eligible services, avoiding the time-consuming ACB evaluation process and reducing service establishment time while maintaining access control for non-eligible services.

The patent applies segmentation by dividing the ACB handling process into distinct segments: service identification at the upper layer, ACB skip indication generation, and RRC layer processing. This segmentation allows the system to implement ACB skipping for specific services without requiring complete redesign of the access control mechanism. The upper layer segments handle service type identification and generate skip indications, while the RRC layer segments process these indications and execute appropriate actions, thereby managing complexity through functional decomposition while improving service efficiency for targeted applications.