Parallel Data Packet Routing for Seamless Wireless Handoffs
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Solution Overview
Problem
Current cellular communication technologies experience latency during handoffs, leading to interruptions in real-time communication services like video calls and online gaming due to delays in data packet transmission between cells.
Innovation Solution
Implementing parallel routing of data packets to both the current and destination cells before and during a handoff, allowing seamless transition by replicating data packets and ensuring they are already available at the new cell site when the user equipment switches, thereby reducing latency and maintaining uninterrupted service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data packets are transmitted sequentially from one cell to another during handoff, then network device complexity is reduced, but handoff latency increases causing service interruptions
Solution Approach 1:
The network device performs preliminary actions by replicating data packets to the target cell before the handoff is completed. This allows the target cell to have data packets ready in advance, eliminating the sequential transmission delay and reducing handoff latency for real-time services.
Solution Approach 2:
The patent segments the data transmission process by creating parallel transmission paths to multiple cells simultaneously. Instead of a single sequential path, data packets are divided and sent through multiple routes (current cell and target cell), allowing the UE to receive packets from either path without interruption.
2Reliability
If data packets are replicated and sent to multiple cells in parallel, then handoff latency is reduced, but network device complexity increases
Solution Approach 1:
The network device changes the parameter of data transmission by replicating packets and sending them through multiple paths simultaneously. This parameter change (from single-path to multi-path transmission) ensures service continuity during handoff, maintaining reliability for real-time communications.
3Stability of the object's composition
If data packets are buffered during handoff, then transmission stability is maintained, but real-time service quality deteriorates due to latency
Solution Approach 1:
Instead of buffering packets during handoff, the system performs preliminary action by pre-replicating data packets to the target cell before handoff occurs. This eliminates the need for buffering during the transition, maintaining transmission stability while avoiding the latency that would result from buffering real-time data packets.
Data Source
AI summary
Systems, devices, and techniques described herein relate to parallel routing of data packets prior to and/or during a handoff event for a user equipment (UE) between cells. An example method includes determining, by a network device, that a UE is about to participate in a handoff event while the network device is transmitting data packets associated with a service to a cell currently in communication with the UE. The network device may determine a destination cell in which the UE will be performing the handoff with and may replicate the data packets and send the data packets to both of the current cell and the destination cell in parallel. When the UE performs the handoff with the destination cell, the data packets required for receiving the service will already be present and the UE will not experience any interruption in the service prior to and/or during the handoff.