Radio Network Node System Information Prioritization
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Solution Overview
Problem
Current wireless communication networks face challenges in guaranteeing absolute priority for critical services like public safety and intelligent transportation systems, leading to potential network access failures during congestion, which is not acceptable for applications requiring constant connectivity, such as emergency services.
Innovation Solution
The implementation of a method where two cells in a wireless communication network share the same bandwidth but transmit distinct system information and access configurations, allowing prioritization of certain services by scheduling resources independently to ensure uninterrupted access for high-priority services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple network identities are transmitted in system information for network sharing, then network versatility is improved, but reliability for critical services deteriorates due to potential access failures during congestion
Solution Approach 1:
The system segments network identities into two distinct groups: prioritized network identities (for critical services like public safety and ITS) and non-prioritized network identities (for regular services). This segmentation is implemented through separate System Information Blocks (SIB1-SIB4 for prioritized, SIB5-SIB8 for non-prioritized), allowing the network to differentiate and prioritize access for critical services while maintaining network sharing capabilities for regular services.
2Reliability
If separate networks are deployed for critical services, then reliability is improved, but device complexity and spectrum usage increase
Solution Approach 1:
The system merges critical services and regular services into a single network infrastructure, using one set of radio network nodes and spectrum resources. The merging is achieved through unified system information transmission that contains both prioritized and non-prioritized network identities, allowing multiple services to coexist on the same physical network while maintaining distinct access priorities through logical separation in system information blocks.
3Loss of energy
If network sharing is implemented for all services, then spectrum efficiency is improved, but reliability for time-critical services deteriorates due to congestion
Solution Approach 1:
The system applies local quality by providing different access conditions to different services within the same network. Prioritized services (public safety, ITS) receive preferential treatment through dedicated system information blocks and access configurations that ensure their access needs are met first, while non-prioritized services share the remaining resources. This local differentiation in access quality allows spectrum efficiency through sharing while guaranteeing reliability for critical services.
Data Source
AI summary
Embodiments herein relate to e.g. a method performed by a first radio network node for handling communication of a wireless device in a wireless communication network comprising at least a first cell and a second cell configured over at least partly a same bandwidth. The first radio network node transmits a first SI over the first cell, wherein the first SI comprises one or more network IDs and one or more access configurations for the one or more network IDs, and wherein the one or more network IDs are associated to a service that is prioritized over other services.