Bearer Switching Between Radio Access Technologies
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Solution Overview
Problem
Current wireless communication systems, particularly those using Long Term Evolution (LTE) technology, face challenges in efficiently managing data transmission between different radio access technologies (RATs), leading to suboptimal performance due to limitations in bearer switching and data handling across multiple communication links.
Innovation Solution
A method and apparatus for switching bearers between radio access technologies (RATs) by serving or receiving data via a first communication link, transmitting configuration messages to initiate a switch to a second communication link, and managing unacknowledged data through protocol layer status reports and feedback mechanisms to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bearer switching between RATs is implemented, then data transmission efficiency is improved, but data loss and transmission errors increase
Solution Approach 1:
The patent applies preliminary action by establishing a configuration procedure before actual bearer switching occurs. The network node transmits configuration information to the UE in advance, including instructions for handling unacknowledged data packets during the switching transition. This preparation ensures that when bearer switching happens, the UE already has the necessary protocols and procedures in place to manage data loss risks, thereby enabling efficient switching while minimizing reliability degradation.
Solution Approach 2:
The patent implements feedback mechanisms through acknowledgment messages exchanged between the network node and UE during bearer switching. The network monitors whether data packets are successfully transmitted during the transition and uses this feedback information to adjust the switching process. If unacknowledged data is detected, the system can retransmit or adjust the switching timing, thus maintaining reliability while preserving the efficiency benefits of bearer switching between RATs.
2Manufacturing precision
If configuration procedures are implemented for bearer switching, then switching accuracy is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the bearer switching configuration procedure into distinct, manageable steps. The configuration information is segmented into specific parameters including source bearer identification, target bearer specification, timing instructions, and data handling rules. This segmentation allows the complex switching process to be broken down into manageable components that can be independently configured, tested, and managed, thereby achieving high switching accuracy without overwhelming system complexity.
Solution Approach 2:
The patent utilizes parameter changes to manage system complexity during bearer switching. Instead of requiring complex procedural changes, the system adjusts key parameters such as bearer identifiers, timing offsets, and data packet routing parameters. By confining the complexity management to parameter modifications rather than procedural rewrites, the system achieves precise switching control while keeping the overall system architecture relatively simple and maintainable.
Data Source
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AI summary
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus serves data to a UE or receives data from the UE via a first communication link that uses a first RAT, transmits a configuration message to the UE indicating that data will be served or received via a second communication link that uses a second RAT, and initiates a configuration procedure to switch service or reception of data from the first communication link that uses the first RAT to the second communication link that uses the second RAT.