User Equipment Data Buffering for Fast LTE Reselection
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Solution Overview
Problem
The process of switching from one communication protocol to another in mobile devices can be delayed due to ongoing data transfers, which restarts the reselection process, prolonging the transition time.
Innovation Solution
A system is implemented to delay or inhibit data transfers on mobile devices during the reselection process from one communication protocol to another, allowing the reselection to complete by buffering or dropping data based on priority levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transfers are allowed during reselection process, then data transmission continuity is maintained, but reselection time is prolonged
Solution Approach 1:
The system performs preliminary actions by buffering outgoing data packets and suspending data transfers before the reselection process completes. This preliminary suspension prevents data transfers from interrupting the reselection, allowing the protocol switch to finish quickly while data is held in buffer and then transmitted after reselection completes.
2Loss of time
If data transfers are suspended during reselection, then reselection time is reduced, but data transmission is delayed
Solution Approach 1:
Data is buffered in advance before reselection, and the buffer is cleared after reselection completes. This preliminary buffering action allows data to be held temporarily without loss, and then transmitted in batch after the protocol switch, minimizing overall transmission duration while enabling fast reselection.
Solution Approach 2:
The system changes the state parameter of data from 'transmitting' to 'buffered' during reselection, and then back to 'transmitting' after reselection. This parameter change allows the system to temporarily halt data transmission without permanent delay, as the buffered data is subsequently transmitted after the protocol switch completes.
3Reliability
If data is buffered during reselection, then reselection completion is ensured, but device memory usage increases
Solution Approach 1:
The buffering is applied selectively only to outgoing data packets that would interrupt reselection, not to all data in the system. This parameter-based selection ensures that only the necessary minimum volume of data is buffered, maintaining reselection reliability while minimizing memory consumption.
Data Source
AI summary
A system for delaying or inhibiting data is provided in order to shorten the time required for a reselection process from a first communication protocol to a second communication protocol. Reselection from the first communication protocol to the second communication protocol (e.g., 3G to 4G) requires a period of time without data transfers to allow the reselection to complete. The system delays or inhibits data transfers on the mobile device until the reselection process completes or the mobile device is idle for a predetermined length of time. In an embodiment, the system can buffer outgoing data and then send the data once the reselection has completed. In other embodiments, the system can drop packet sessions or ignore incoming packet pages. In another embodiment, the system can delay or inhibit data based on the priority of the data.