Multicast Service Stream Identifier for Selective QoS Delivery
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Solution Overview
Problem
The 3GPP UMTS system lacks a method to provide different information by areas or services with varying Quality of Service (QoS) for multicast services, and does not offer diverse menus or channels for a single multicast service.
Innovation Solution
A selective service method for multicast systems in the UMTS, where identifiers such as MBMS service ID, multicast group ID, multicast area ID, and UDP/TCP port number are attached to the MBMS data stream to enable discrimination and tailored delivery of services based on areas and groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single multicast service is provided to all terminals in an area, then network simplicity is maintained, but the system cannot provide different information by areas or diverse menus for one service
Solution Approach 1:
The patent segments the multicast service by introducing multiple identifiers: MBMS service ID for service type, multicast group ID for user groups, and multicast area ID for geographical regions. This segmentation allows different information to be delivered to different areas and groups while maintaining a unified network structure, resolving the contradiction between service diversity and system complexity.
Solution Approach 2:
The patent applies local quality by allowing different multicast area IDs to receive different information streams for the same MBMS service. Each area can be customized with local content while using the same service framework, enabling regional customization without requiring separate service infrastructures.
2Adaptability or versatility
If identifiers are attached to MBMS data stream to enable selective service delivery, then diverse content delivery is achieved, but data stream complexity increases
Solution Approach 1:
The patent creates a universal identifier structure that serves multiple functions: MBMS service ID identifies the service type, multicast group ID targets specific user groups, and multicast area ID directs content to specific regions. This multi-functional identifier system enables diverse content delivery without requiring separate processing mechanisms for each function, reducing overall system complexity.
3Ease of operation
If multicast service provides same data to all users, then network operation is simple, but user demands for varied content and QoS cannot be met
Solution Approach 1:
The patent changes the parameters of multicast delivery by introducing area-specific and group-specific identifiers. This allows the same MBMS service to be delivered with different parameters (content, QoS) to different areas and groups, satisfying diverse user demands while maintaining simple network operation through a unified identifier-based approach.
Data Source
AI summary
A multicast service of a 3GPP Universal Mobile Telecommunications System (UMTS) is disclosed. A multicast service stream identifier is provided so that each multicast area can receive different information for one service or one multicast service can be provided with different QoSs to areas. In addition, the multicast service stream identifier is provided which can selectively receive diverse menus or channels for one multicast service provided in the same area. Thus, by providing the multicast service stream identifier, users' desires for various services can be satisfied.