Radio Access Bearer Management for Independent Voice and Data
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Solution Overview
Problem
Current wireless communication networks face congestion and scheduling issues due to increased data usage, leading to unintended termination of both data and voice connections when a data connection becomes unrecoverable, as they treat multiple radio access bearers as a single connection, impacting independent service delivery.
Innovation Solution
A method for controlling multiple radio access bearers in a mobile wireless communication device, where the device transmits data packets on one bearer, retransmits when not received correctly, and releases that bearer while maintaining the other, ensuring independent operation of voice and data connections by using separate bearers for circuit and packet-switched data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple radio access bearers are treated as a single connection, then network management is simplified, but independent service delivery is compromised and voice connections are unnecessarily terminated during data connection failures
Solution Approach 1:
The patent segments the radio access bearers into distinct data bearers and voice bearers, allowing independent management of each connection type. This segmentation enables the system to maintain voice connections even when data connections fail, resolving the contradiction between simplified management and reliable service delivery.
Solution Approach 2:
The patent applies different quality characteristics and management policies to different bearers based on their local requirements. Voice bearers maintain higher priority and independence from data bearer failures, while data bearers use standard retransmission mechanisms. This local differentiation resolves the contradiction by tailoring connection behavior to specific service needs.
2Reliability
If the mobile device retransmits data packets repeatedly, then data delivery reliability is improved, but network resources are consumed and connection termination may be triggered unnecessarily
Solution Approach 1:
The patent implements preliminary actions by establishing separate voice and data bearers before failures occur, with pre-configured independent termination policies. When data bearer failures are detected after repeated retransmissions, the system preliminarily prepares to terminate only the data bearer while preserving the voice bearer, avoiding unnecessary resource consumption.
Solution Approach 2:
The system uses feedback mechanisms to monitor data packet delivery status and trigger appropriate actions. When retransmission limits are exceeded, the feedback loop activates selective termination of the data bearer while maintaining the voice bearer. This feedback-based approach balances reliability with resource conservation by avoiding blanket connection terminations.
3Reliability
If the radio link is terminated when data connection becomes unrecoverable, then data connection issues are resolved, but voice connection is unnecessarily removed
Solution Approach 1:
The patent segments the connection management logic into separate data bearer termination and voice bearer maintenance pathways. This segmentation ensures that data connection failures trigger only data bearer termination, preventing the harmful effect of unintended voice connection termination while maintaining data connection recovery through selective retransmission and termination policies.
Data Source
AI summary
A method to control multiple radio access bearers is performed at a mobile wireless communication device when the mobile wireless communication device is connected to a radio network subsystem in a wireless communication network by first and second bidirectional radio access bearers. The mobile wireless communication device transmits a data packet on an uplink of the first bidirectional radio access bearer to the radio network subsystem. When the data packet is not correctly received by the radio network subsystem, the mobile wireless communication device retransmits the data packet repeatedly. After N retransmissions of the data packet, the mobile wireless communication device releases the first bidirectional radio access bearer while maintaining the second bidirectional radio access bearer. The first bidirectional radio access bearer provides a channel to transport packet switched data, and the second bidirectional radio access bearer provides a channel to transport circuit switched data.