Random Access Configuration Differentiation for 5G NR Service Prioritization

The patent segments the random access configuration into different types: Type-1 configuration for common search space and Type-2 configuration for UE-specific search space. This segmentation allows the network to maintain separate configurations for different service classes and network slices while managing complexity through structured organization of configuration parameters.

The patent applies local quality by assigning different RNTI offset values to different search space types. Type-1 search spaces use one set of RNTI offsets while Type-2 search spaces use another set, allowing differentiated treatment of common versus UE-specific random access messages without requiring completely separate configurations for all parameters.

The patent implements universality by designing a unified random access procedure that can handle multiple service classes and network slices through a single framework. The same basic random access steps (Msg1, Msg2, Msg3, Msg4) are used for all UE types, but differentiated through configuration parameters (search space type, RNTI offsets, priority handling), avoiding the need for separate procedures for each service class.

The patent changes parameters such as RNTI offset values and search space configuration based on the service class and network slice identifiers. Instead of creating entirely new procedures, the system modifies existing parameters (e.g., adding offset values to RNTI calculations) to achieve differentiation, which reduces complexity compared to creating separate procedures for each service type.

The patent segments RNTI management into different offset values associated with different search space types. By maintaining separate RNTI offset sets for Type-1 (common) and Type-2 (UE-specific) search spaces, the system eliminates ambiguity in message identification while using a manageable number of distinct RNTI values rather than completely separate RNTI sets.

The patent introduces search space type information as an intermediary that helps disambiguate RNTI values. The search space type acts as a mediator between the RNTI and the intended message type, allowing the UE to correctly identify whether a received message is common or UE-specific based on the search space configuration rather than relying solely on the RNTI value itself.

The patent applies preliminary action by configuring UEs with service class and network slice identifiers before the random access procedure begins. This pre-configuration allows the UE to determine its appropriate search space type and RNTI offset in advance, enabling early differentiation and prioritization without adding complexity during the actual random access message exchange.

The patent implements local quality by applying service-specific handling only where needed - in the search space configuration and RNTI offset selection - rather than redesigning the entire random access procedure. This allows prioritization efficiency to be improved for high-priority services while keeping the overall procedure complexity manageable by applying differentiation only at specific points in the process.