Radio Network Controller Transcoder-Free Connection Setup
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Solution Overview
Problem
Current methods fail to establish transcoder-free operation connections between communication terminals due to the inability to negotiate compatible codec mode configurations, leading to a low probability of successful connections.
Innovation Solution
A radio network controller checks if a requested subset of a codec mode configuration is supported and signals the communication terminal to use only the supported subset for data transmission, ensuring compatibility and increasing the likelihood of establishing a transcoder-free operation connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual codec modes are negotiated between radio network controllers, then the negotiation process is simple, but the probability of establishing a transcoder-free operation connection is low
Solution Approach 1:
The codec mode configuration is segmented into multiple individual codec modes. Instead of negotiating the entire configuration as a single unit, the system negotiates individual codec modes (a, b, c, d, f) separately. This segmentation allows for more flexible matching between RNCs, increasing the probability of finding compatible modes while keeping the negotiation process manageable through systematic evaluation of individual mode compatibility.
Solution Approach 2:
The system dynamically evaluates multiple codec mode configurations and selects the most appropriate subset based on real-time compatibility assessment. The RNC checks whether requested subsets of codec modes are supported and adapts the negotiation outcome dynamically, rather than being constrained by static pre-defined configuration matching. This dynamic approach enables successful TrFO establishment even when complete configuration matches are unavailable.
2Adaptability or versatility
If all codec mode configurations are supported by radio network controllers, then compatibility is maximized, but resource consumption and system complexity increase significantly
Solution Approach 1:
Instead of implementing and maintaining support for all possible codec mode configurations in the RNC, the system extracts and negotiates only the specific subset of codec modes that are mutually compatible between the involved RNCs. The RNC checks support for requested subsets and establishes connections using only the necessary codec modes, thereby reducing resource consumption while maintaining adequate compatibility through selective negotiation.
Solution Approach 2:
The radio network controller is designed with multi-functionality to handle multiple codec mode configurations through a unified negotiation framework. Rather than requiring separate implementation paths for each configuration, the RNC can negotiate and support various codec mode subsets (a/b, b/c/d/f, etc.) using the same infrastructure and processing logic, achieving broad compatibility without proportionally increasing resource requirements.
Data Source
AI summary
When a request is sent by a switching unit, relating to the use of at least one subset of a codec mode configuration for the establishment of a transcoder-free operation connection by a radio network controller, it is checked whether the at least one requested subset is supported by the radio network controller. If the at least one subset of at least one codec mode configuration is supported, a transcoder-free operation connection to the switching unit and to the communication terminal is established by the radio network controller. Furthermore, a message relating to the at least one subset of the codec mode configuration to be used is signalled from the radio network controller to the communication terminal for the transmission of data.