Wireless Coverage Area Selection for Codec Compatibility
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Solution Overview
Problem
Wireless communication devices may experience unreliable communication when using high-bitrate codecs if not all wireless coverage areas support the required features, leading to a need for selecting appropriate media codecs and target bitrates based on the capacity of the coverage areas to ensure a better user experience.
Innovation Solution
A system that determines the appropriate media codec and target bitrate for a call by assessing signal strengths from multiple wireless coverage areas, selecting the optimal set of coverage areas for communication, and adjusting the number of coverage areas based on the codec and bitrate capabilities to ensure reliable and high-quality communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high-bitrate media codec is assigned to the WCD, then communication quality is improved, but reliability deteriorates if coverage areas cannot support the required features
Solution Approach 1:
The system performs preliminary assessment of coverage area capabilities before assigning a media codec. The RAN determines whether coverage areas can support required codec features in advance, preventing assignment of high-bitrate codecs to incompatible coverage areas and thus maintaining both quality and reliability
Solution Approach 2:
The system dynamically adjusts media codec parameters (bitrate, feature set) based on the determined capabilities of coverage areas. When coverage areas support high-bitrate codecs, the system assigns higher bitrates for improved quality; when support is limited, it assigns lower bitrates to maintain reliability
2Reliability
If more wireless coverage areas are used for simultaneous communication, then communication reliability is improved, but codec compatibility becomes more difficult to maintain
Solution Approach 1:
The system determines the capabilities of multiple coverage areas before establishing simultaneous communication. By assessing codec support in advance across all candidate coverage areas, the system can select a compatible media codec that works across all selected areas, maintaining both reliability through diversity and compatibility through preliminary assessment
Solution Approach 2:
The system selects a media codec that is universally supported across multiple coverage areas. By choosing a codec that functions across all selected coverage areas regardless of individual capabilities, the system maintains compatibility while benefiting from simultaneous communication through multiple areas
Data Source
AI summary
A radio access network (RAN) may receive a request to establish a call involving a wireless communication device (WCD) served by the RAN. The WCD may receive signals from the RAN, via a plurality of wireless coverage areas, at respective signal strengths. A set of n wireless coverage areas may be selected from the plurality of wireless coverage areas to support communications related to the call, where n is at least 2. A service option to use for the call may be determined, where the service option indicates a call type. Based on the indicated call type, at least one wireless coverage area may be removed from the set of n wireless coverage areas. The call may be established between the RAN and the WCD.