Service Type-Specific SIB Broadcasting for 5G NR Mobility
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently broadcasting service type-specific system information and implementing mobility protocols that cater to diverse service requirements of different devices, such as enhanced mobile broadband (EMBB), ultra-reliable low latency communications (URLLC), and massive machine-type communications (MMTC), due to the lack of scalable mechanisms for service type indication and specific mobility parameters.
Innovation Solution
Base stations broadcast service type-specific system information blocks (SIBs) that include scheduling information and bitmap indicators to inform user equipment (UEs) about supported services, allowing for service type-specific cell selection, reselection, handover, and redirection procedures, enabling UEs to choose cells that match their service type requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single unified system information block is broadcast for all service types, then the broadcasting mechanism remains simple and device complexity is low, but the system cannot provide service type-specific mobility parameters and configuration information
Solution Approach 1:
The patent segments the system information into multiple SIB types, where each SIB is dedicated to a specific service type (e.g., SIB1 for EMBB, SIB2 for URLLC, SIB3 for MMTC). This segmentation allows each SIB to contain service type-specific mobility parameters and configuration information, resolving the contradiction by providing adaptability while maintaining a standardized structure for each segment.
Solution Approach 2:
The patent introduces a new dimension of service type classification by adding a service type indicator field to the SIB structure. This dimensional extension allows the system to differentiate between various service types (eMBB, URLLC, MMTC) within the broadcast information, enabling service-specific configuration without fundamentally changing the overall SIB broadcasting mechanism.
2Reliability
If service type-specific SIBs are broadcast for each service type, then service type-specific mobility parameters can be provided, but the system information broadcasting complexity and overhead increase
Solution Approach 1:
The patent implements a universal SIB framework where a single SIB structure can serve multiple service types through the service type indicator field. Each SIB is designed to be multi-functional, capable of providing mobility parameters for different service types (EMBB, URLLC, MMTC) within the same broadcast message, thereby reducing the total information volume while maintaining service-specific accuracy.
Solution Approach 2:
The patent applies partial action by selectively including only the necessary service type-specific parameters in each SIB based on the current service requirements. Rather than broadcasting all possible parameters for all service types simultaneously, the system transmits only the relevant subset, reducing overall information overhead while ensuring complete information for the active service type.
3Adaptability or versatility
If multiple SIBs are broadcast for different service types, then UEs can select cells matching their service requirements, but the scheduling complexity and information management overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring the SIB scheduling structure with service type indicators and associated mobility parameters before actual cell selection occurs. The base station pre-organizes multiple SIBs with different service type configurations, and UEs can directly match their service requirements against these pre-configured options, simplifying the real-time scheduling complexity while maintaining high cell selection flexibility.
Data Source
AI summary
Base stations, user equipment devices (UEs), and methods for a base station to supply service type-specific information to the UE. The base station may broadcast a first system information block (SIB) comprising scheduling information for a plurality of second SIBs, wherein each of the plurality of second SIBs corresponds to a respective service type of a plurality of service types, and wherein the second SIBs describe service type-specific capabilities of the base station. The plurality of service types may comprise two or more of enhanced mobile broadband, ultra-reliable low latency communications, and massive machine-type communications. The base station may broadcast the plurality of second SIBs according to the scheduling information of the first SIB, and may establish a connection and communicate with the UE using one or more service types and according to the service type-specific capabilities described by second SIBs corresponding to the one or more service types.