Wireless Handover via Dual-Connection for Data Rate Stability
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Solution Overview
Problem
Current handover methods in 5G wireless communication systems result in a reduction in data transmission rate due to inefficient network switching, particularly when transitioning between mmWave and LTE networks, leading to performance deterioration during frequent handovers.
Innovation Solution
A method that allows terminals to perform handovers while maintaining connections with both networks, monitoring signal quality, and determining the optimal time for switching to ensure continuous data transmission and quick recovery, thereby enhancing data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal disconnects from the current network before connecting to a new network during handover, then the handover process can be completed, but the data transmission rate is reduced and performance deteriorates
Solution Approach 1:
The terminal establishes a connection with the new network before disconnecting from the current network. This preliminary action ensures that the data transmission path is ready in advance, avoiding interruption and maintaining high data transmission rate during handover.
Solution Approach 2:
The terminal maintains data transmission continuity by switching networks without complete disconnection. The useful action of data transmission continues uninterrupted by establishing the new connection first, then seamlessly transitioning while maintaining ongoing data flows.
2Reliability
If a terminal switches to a network with higher priority, then connection quality improves, but the handover process causes temporary disruption
Solution Approach 1:
The terminal performs preliminary connection establishment with the higher priority network before switching. This includes authentication, resource allocation, and data session setup in advance, so that when the switch occurs, there is minimal disruption and no noticeable loss of time.
Solution Approach 2:
The handover process is accelerated by skipping unnecessary waiting and verification steps. The terminal rushes through the connection switch by having pre-established the new connection, allowing rapid transition to the higher priority network with minimal interruption to service.
Data Source
Figure 1
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Figure 3b~4a
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for performing a handover by a terminal in a wireless communication system is provided. The method includes measuring a signal quality of a first network and determining whether the handover is required based on the signal quality of the first network, when the handover is determined to be required, communicating data through both a connection with the first network and a connection with a second network during a delay period and measuring the signal quality of the first network, when the delay period ends, determining whether to perform the handover based on the signal quality of the first network at a time when the delay period ends, and performing the handover.