Selective Radio Access Bearer Establishment for Voice Data
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Solution Overview
Problem
Mobile telecommunications networks face a high frequency of dropped calls due to the impairment of radio link budgets when simultaneously supporting voice and data communications over multi-RAB connections, particularly at the edge of network coverage, leading to reduced consumer confidence and revenue loss for network operators.
Innovation Solution
A method for selectively establishing radio access bearers that determines a mobile device's capability to support simultaneous voice and data sessions by measuring uplink transmit power statistics and applying a thresholding algorithm, allowing or denying the establishment of a multi-RAB based on whether the device can maintain acceptable voice quality and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an mRAB is established to support simultaneous voice and data communications, then the network offers enhanced service capability and competitive advantage, but the radio link budget is impaired leading to a higher frequency of dropped calls
Solution Approach 1:
The patent measures uplink transmit power statistics and evaluates device capability to support mRAB before establishing the connection. This preliminary assessment prevents establishing connections that would lead to dropped calls, thereby maintaining reliability while enabling service capability where appropriate.
Solution Approach 2:
The patent dynamically evaluates the uplink transmit power statistic parameter to determine whether to establish an mRAB. By changing the decision parameter from a static always-allow approach to a dynamic power-based assessment, the system resolves the contradiction between service capability and call stability.
2Reliability
If the mobile device uses all or majority of available uplink transmit power to maintain voice quality, then acceptable voice quality is achieved, but the radio link budget is impaired and the device can no longer support data components
Solution Approach 1:
Before establishing an mRAB, the system preliminarily assesses whether sufficient uplink transmit power remains after allocating power for voice communications. This prevents situations where data transmission would compromise voice quality, maintaining reliability of the primary voice function while selectively enabling data capability.
3Adaptability or versatility
If the network promotes simultaneous voice and data service offering, then competitive advantage is gained, but dropped call frequency increases leading to reduced consumer confidence and revenue loss
Solution Approach 1:
The patent changes the operational parameter from unconditional mRAB establishment to conditional establishment based on uplink transmit power statistics. This resolves the contradiction by maintaining service offering versatility while improving reliability metrics that drive consumer confidence and revenue.
Solution Approach 2:
The system uses feedback from uplink transmit power measurements to make informed decisions about mRAB establishment. This feedback mechanism ensures that service expansion does not compromise call stability, thereby maintaining consumer confidence while promoting enhanced service offerings.
Data Source
AI summary
Systems, methods, and computer-readable media are for selectively establishing radio access bearers configured to support simultaneous voice and data communications in a mobile telecommunications network. An exemplary method includes receiving a request to initiate a data session at a mobile device that is currently engaged in a voice session and, in response to receiving the request, determining if the mobile device is capable of supporting a radio access bearer configured to simultaneously support the data session and the voice session. The method further includes allowing or denying establishment of the radio access bearer based upon the determination.