Base Station Group Paging Multicast Audio Conversion
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Solution Overview
Problem
Multicast operations in multicell wireless communication systems face challenges such as complex system management and maintaining uninterrupted audio playback as wireless terminals roam between base stations, especially when not all base stations receive corresponding IP multicast messages.
Innovation Solution
A method and system for performing group paging of wireless terminals by receiving IP multicast packets at a base station, determining the localization of wireless terminals within the paging group, processing the multicast packets to convert them into an audio stream, and outputting the audio stream to localized wireless terminals, with the option to establish proxy calls between base stations to maintain seamless audio playback during roaming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If multicast operations are implemented in multicell wireless communication systems, then bandwidth efficiency is improved, but system complexity increases
Solution Approach 1:
The system segments the multicell network into multiple base station zones, each responsible for receiving and processing multicast packets locally. Base stations independently determine which wireless terminals are localized to them and deliver audio streams accordingly, dividing the complex multicast management task into manageable local segments rather than requiring centralized control across all cells.
Solution Approach 2:
Each base station is equipped with specific functionality to receive IP multicast packets, convert them to audio streams, and deliver them to localized wireless terminals. This local capability assignment ensures that each base station operates autonomously with the quality and functionality needed for its specific role, reducing overall system complexity while maintaining bandwidth efficiency.
2Adaptability or versatility
If wireless terminals roam between base stations during multicast transmission, then mobility is improved, but audio playback continuity deteriorates
Solution Approach 1:
The system performs preliminary determination of terminal localization at each base station before audio delivery. By checking which wireless terminals are localized to each base station in advance and establishing proxy calls proactively, the system prepares the audio stream routing before roaming occurs, ensuring continuous playback without interruption when terminals move between cells.
Solution Approach 2:
The invention introduces a proxy call mechanism as an intermediary between base stations during terminal roaming. When a wireless terminal roams from one base station to another, the original base station establishes a proxy call with the new base station, allowing the audio stream to be seamlessly transferred through this intermediary connection, maintaining playback continuity despite terminal mobility.
3Reliability
If all base stations receive IP multicast messages, then audio delivery reliability is improved, but network traffic load increases
Solution Approach 1:
The system extracts and processes only the necessary multicast audio streams at each base station that has localized wireless terminals. Instead of all base stations receiving and processing all multicast messages, each base station selectively receives and converts only the specific multicast packets needed for its localized terminals, reducing overall network traffic load while ensuring reliable audio delivery to all terminals.
Data Source
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AI summary
To perform group paging of wireless terminals, a network receives at a first base station of one or more base stations, Internet Protocol multicast packets directed to a first multicast address corresponding to a first paging group. The first base station determines whether wireless terminals of a first paging group corresponding to the first multicast address are localized to the first base station. The first base station controls a first processor to process the multicast packets directed to the first multicast address based on determining whether one or more wireless terminals are localized to the first base station. The processing comprises converting the multicast packets directed to the first multicast address into a first audio stream. The first base station outputs the first audio stream to a localized set of said one or more wireless terminals of the first paging group.