LTE NR Ping-Pong Reselection Avoidance via Network Indication
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Solution Overview
Problem
The frequent ping-pong reselection between Long Term Evolution (LTE) and New Radio (NR) radio access technologies leads to increased UE power consumption and signaling load due to repeated registration signaling, which is not effectively addressed by existing technologies.
Innovation Solution
A method and apparatus for determining a ping-pong condition between LTE and NR RATs, allowing the UE to configure a dual connectivity mode or deprioritize NR, thereby reducing power consumption and signaling load by using a non-standalone mode and avoiding frequent registration updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE frequently reselects between LTE and NR RATs to maintain optimal connection, then the connection quality is improved, but the UE power consumption increases and signaling load increases
Solution Approach 1:
The patent applies preliminary anti-action by detecting ping-pong conditions before they cause excessive power consumption. The network device monitors reselection events and proactively identifies when a UE is experiencing ping-pong behavior between LTE and NR RATs. Once detected, the network sends an indication message to the UE to suspend further reselection attempts, preventing the harmful cycle from continuing and reducing power consumption before significant energy is wasted.
2Reliability
If the UE frequently reselects between LTE and NR RATs to maintain optimal connection, then the connection quality is improved, but the signaling load increases
Solution Approach 1:
The network device proactively detects ping-pong conditions by monitoring reselection events and sends an indication message to the UE to suspend further reselection attempts. This preliminary action prevents the UE from continuing to send registration signaling repeatedly, thereby reducing the signaling load on the network while maintaining connection quality.
3Use of energy by moving object
If the UE uses idle-mode signaling reduction techniques to avoid ping-pong reselection, then the power consumption is reduced, but the implementation complexity increases
Solution Approach 1:
The patent introduces an intermediary approach where the network device acts as a mediator between the UE's reselection decisions. Instead of implementing complex idle-mode signaling reduction techniques in the UE, the network device monitors reselection events, detects ping-pong conditions, and sends control messages to guide the UE's behavior. This shifts the complexity from the UE to the network, simplifying UE implementation while achieving power savings.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network device may determine that a ping-pong condition is satisfied with regard to a Long Term Evolution (LTE) radio access technology (RAT) and a New Radio (NR) RAT. The network device may configure a dual connectivity mode for the UE based at least in part on the ping-pong condition being satisfied. The network device may cause the UE to deprioritize the NR RAT based at least in part on the ping-pong condition being satisfied. Numerous other aspects are provided.