On-Demand System Information Block Request in UE-Centric Networks
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Solution Overview
Problem
Wireless communication systems face inefficiencies in power consumption due to regular broadcast of system information blocks (SIBs) in base stations, which can be mitigated by transmitting SIBs in an on-demand mode rather than broadcast mode, especially in UE-centric networks where the network determines cell selection based on UE chirp signals.
Innovation Solution
Implementing a method where user equipment (UE) transmits a chirp signal with a reference signal as part of a random access procedure, allowing the access network to determine and broadcast system information blocks (SIBs) only when requested, thereby conserving power by avoiding continuous SIB broadcasts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If system information blocks (SIBs) are broadcast continuously in base stations, then system information is always available to user equipment, but power consumption increases
Solution Approach 1:
The base station transmits SIBs periodically or on-demand rather than continuously. The network can configure SIB transmission to occur at specific intervals or only when triggered by UE requests, reducing unnecessary transmissions and power consumption while maintaining information availability when needed.
Solution Approach 2:
The system enables UEs to request specific SIBs they need through the random access procedure. Instead of the network continuously providing all SIBs to all UEs, the UEs self-identify their information needs and request only what is necessary, allowing the network to optimize transmissions based on actual demand.
2Adaptability or versatility
If SIBs are transmitted in broadcast mode, then all UEs receive system information, but network resources are wasted when not all UEs need the information
Solution Approach 1:
The patent extracts the SIB request functionality from the traditional broadcast mechanism. Instead of embedding all SIBs in broadcast messages, the system separates the request phase (where UEs indicate what they need) from the transmission phase (where only requested SIBs are sent), eliminating unnecessary information transmission.
Solution Approach 2:
The system transitions from a static broadcast model to a dynamic on-demand model. The SIB transmission behavior adapts based on real-time UE requests and network conditions, allowing the network to optimize resource allocation by transmitting only the specific SIBs that UEs actually need at any given moment.
3Ease of operation
If the network uses traditional random access procedures, then UEs can establish connections, but the procedure does not efficiently support SIB requests in UE-centric networks
Solution Approach 1:
The random access procedure is enhanced to serve multiple functions: it not only establishes connections but also enables UEs to request specific SIBs. The preamble or message structure is designed to carry SIB request information, allowing a single procedure to handle both connection setup and information retrieval needs.
Solution Approach 2:
The system performs SIB requests during the initial random access phase, before full connection establishment is complete. This preliminary action allows UEs to indicate their information needs early in the procedure, enabling the network to prepare and transmit relevant SIBs efficiently as part of the connection setup process.
Data Source
AI summary
Aspects of the present disclosure provide various techniques for requesting a system information block (SIB) and providing a SIB response for a user equipment (UE) in a UE-centric wireless communication network. In some aspects of the disclosure, the network may transmit the SIB to the UEs in a broadcast mode or in an on-demand mode.