On-Demand System Information Blocks for Low-Power Network Nodes
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in energy usage and delayed responses due to the periodic transmission of system information blocks (SIBs), particularly when user equipment (UE) wakes up network nodes from low-power modes, leading to increased energy consumption and potential delays.
Innovation Solution
Implementing on-demand SIB procedures that allow UE and network nodes to select and configure SIB requests and receptions based on specific indications, enabling the network node to remain in low-power mode longer while ensuring efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If system information blocks are transmitted periodically, then network nodes can maintain continuous availability for UE, but energy consumption increases and response delays occur when UE wakes up network nodes from low-power modes
Solution Approach 1:
The patent applies periodic action by allowing network nodes to alternate between low-power mode and active state. Instead of continuous periodic SIB transmission, the system uses on-demand triggering where UEs can request SIBs when needed, and network nodes transmit SIBs periodically only when triggered by UE requests or specific network conditions, thereby reducing energy consumption while maintaining reliability.
Solution Approach 2:
The patent implements self-service by enabling UEs to autonomously determine when to request SIB information based on their needs. The UE can independently trigger SIB requests without continuous network polling, and the network node serves the request when resources are available, creating a self-regulating system that balances availability with energy efficiency.
2Speed
If network nodes remain in active state to quickly respond to UE requests, then response time is reduced, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by making the network node's operational state flexible rather than fixed. The network node dynamically transitions between low-power mode and active state based on UE requests and network conditions. This dynamic state adjustment allows the system to optimize the balance between response time and energy consumption in real-time.
Solution Approach 2:
The patent implements preliminary action by having UEs prepare and send SIB requests before actually needing the information. The UE can trigger a SIB request in advance during periodic measurements or when anticipating future needs, allowing the network node to prepare and transmit SIBs during scheduled opportunities rather than requiring continuous active state.
3Productivity
If on-demand SIB procedures are implemented, then energy usage is reduced and network efficiency increases, but system complexity and configuration requirements increase
Solution Approach 1:
The patent applies universality by designing the on-demand SIB procedure to work across multiple scenarios and UE types using a unified configuration framework. The same configuration parameters and procedures handle different UE states (idle, inactive, connected) and different SIB request scenarios, reducing the need for separate complex configurations for each case and making the system more manageable despite the increased functionality.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for an on-demand system information block (SIB) procedure associated with a first cell. The configuration may include one or more configurations for transmitting a physical channel containing a SIB request in accordance with a first indication that indicates one of the first cell or a second cell. The configuration may further include one or more configurations for receiving, from one of the first cell or the second cell, a physical channel containing a requested SIB associated with the first cell in accordance with a second indication that indicates one of the first cell or the second cell. The UE may transmit a communication to one of the first cell or the second cell in accordance with the configuration for the on-demand SIB procedure. Numerous other aspects are described.