RAN Node Paging via Core Network Request
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Solution Overview
Problem
In wireless communication networks, a radio access network (RAN) node is unable to page a user equipment (UE) in an RRC idle state, leading to conservation of power, network, communication, or computing resources, and potential radio link failure and poor spectral efficiency, as well as stale data that degrades user experience.
Innovation Solution
The RAN node requests a core network (CN) node to initiate paging for the UE by transmitting a request with a UE identifier, allowing the CN node to manage the paging process and ensure efficient resource utilization and timely data delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the RAN node releases the RRC connection to transition the UE to an RRC idle state, then power consumption and resource usage are reduced, but the RAN node loses the ability to page the UE and transmit control information
Solution Approach 1:
The patent introduces the core network node as an intermediary that performs paging functions on behalf of the RAN node when the UE is in RRC idle state. The RAN node sends a paging request to the core network node, which then transmits the paging message to the UE, allowing the RAN node to maintain control capability without requiring the UE to remain in connected state.
Solution Approach 2:
The patent segments the paging function into two parts: the RAN node generates the paging request and control information, while the core network node executes the actual paging transmission. This segmentation allows the RAN node to conserve resources by releasing the RRC connection while still maintaining the ability to initiate paging through the core network node.
2Ease of operation
If the RAN node maintains the RRC connection to enable paging capability, then control information can be transmitted to the UE, but power consumption and network resources are wasted
Solution Approach 1:
Instead of maintaining a continuous RRC connection, the system uses periodic action where the RAN node sends paging requests to the core network node only when needed. The UE transitions to RRC idle state between paging events, consuming minimal power, while the RAN node can quickly re-establish communication by sending a new paging request when control information needs to be transmitted.
3Loss of energy
If the RAN node cannot page the UE in RRC idle state, then resources are conserved, but data becomes stale and user experience degrades
Solution Approach 1:
The system performs preliminary action by having the RAN node send a paging request to the core network node before the UE actually needs the control information. This ensures that when the UE responds to the paging message, the control information is ready to be transmitted immediately, preventing data staleness while allowing the UE to remain in power-saving RRC idle state.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a radio access network (RAN) node may release a radio resource control (RRC) connection of a user equipment (UE). The RAN node may transmit a request to a core network (CN) node to initiate paging for the UE, the request including an identifier of the UE. Numerous other aspects are described.