System Information Provisioning for 5G Signaling Latency
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Solution Overview
Problem
Current LTE systems face inefficiencies in broadcasting System Information (SI), leading to increased latency, power consumption, and inadequate support for 5G requirements such as high connection density, low control plane latency, and network slicing, particularly in scenarios like massive Machine-Type Communications (mMTC) and Ultra-Reliable Low Latency Communications (URLLC).
Innovation Solution
Implementing an efficient SI provisioning mechanism that allows on-demand SI acquisition, using cluster-based cell configurations, extended System Information value tags, and index-based configuration for Radio Bearers, enabling UEs to request only necessary SI and reducing unnecessary broadcasts, thereby optimizing radio resource utilization and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network broadcasts all system information periodically to all UEs, then all UEs can access necessary information, but radio resource utilization efficiency decreases and power consumption increases
Solution Approach 1:
The patent segments system information into multiple categories including minimum system information (broadcast periodically), other system information (broadcast selectively), and dedicated system information (provided on-demand to specific UEs). This segmentation allows the network to broadcast only essential information periodically while providing additional information selectively or on-demand, thereby reducing overall broadcast overhead and power consumption while maintaining information availability.
Solution Approach 2:
The patent implements a mechanism where UEs can autonomously request specific system information blocks (SIBs) they need based on their service requirements. The network responds to these requests by providing only the requested information rather than broadcasting all SIBs. This self-service approach enables UEs to obtain necessary information without the network expending energy on comprehensive periodic broadcasts.
2Productivity
If the network broadcasts comprehensive system information, then all UEs can establish connections quickly, but latency increases due to processing and transmitting large amounts of data
Solution Approach 1:
The patent pre-configures UEs with minimum system information during initial access, enabling them to establish basic connections immediately. Additional system information blocks are made available on-demand or through selective broadcasting only when needed. This preliminary provision of essential information allows UEs to connect quickly without waiting for comprehensive system information broadcasts, thereby reducing acquisition latency while maintaining connection establishment capability.
3Measurement precision
If the network provides dedicated system information to each UE, then information accuracy improves, but device complexity and signaling overhead increase
Solution Approach 1:
The patent provides dedicated system information blocks to specific UEs based on their individual service requirements, UE capabilities, and network conditions. Rather than providing identical information to all UEs or broadcasting everything universally, the network tailors the system information provision to each UE's local needs. This local quality approach ensures each UE receives accurate, relevant information without the overhead of universal dedicated provisioning for all UEs.
4Adaptability or versatility
If the network supports diverse 5G services (mMTC, URLLC, eMBB) with uniform system information broadcasting, then all services can access information, but radio resource utilization efficiency decreases
Solution Approach 1:
The patent implements dynamic system information provisioning that adapts to different 5G service requirements. The network can selectively broadcast different system information blocks based on current network conditions, service types (mMTC, URLLC, eMBB), and UE requirements. For example, URLLC services can receive dedicated low-latency information while mMTC devices receive periodic broadcasts. This dynamic approach maintains versatility in supporting diverse services while optimizing radio resource utilization by avoiding uniform comprehensive broadcasting.
Data Source
AI summary
System information can include a basic set of system information and additional system information. A UE can receive the basic set of system information and then later request or receive the additional system information. Messages can use tags which can be used to look up locally stored system information. If a tag does not correspond to any locally stored system information, the system information and an associated tag can then be requested. Messages can be indicative of a cluster identity associated with cells. When the UE goes into a new cell, the cluster identity can be checked to see if system information from a prior call can be reused.