MBMS Service Attach Aggregation for Mobile Terminals
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Solution Overview
Problem
Conventional methods for providing multimedia broadcast/multicast services (MBMS) in UMTS networks face inefficiencies when mobile terminals move to new areas managed by different network elements, leading to increased signaling load and resource consumption.
Innovation Solution
A method and apparatus that transmit a service attach request message from a serving RNC to a drift RNC, including information about mobile terminals that have moved, to facilitate continued service reception while minimizing signaling activity and conserving network resources, by performing a service attach process only if a connection with the core network is available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional MBMS service attach/detach procedures are performed for each mobile terminal moving between network areas, then service continuity is maintained, but signaling load and network resource consumption increase significantly
Solution Approach 1:
The patent combines multiple MBMS service attach/detach procedures into a single unified procedure. Instead of processing each service separately when a mobile terminal moves between network areas, the system aggregates all services into one attach request message and one attach response message, significantly reducing signaling load while maintaining service continuity for all affected terminals
Solution Approach 2:
The patent creates a universal MBMS service attach procedure that handles multiple services simultaneously. The attach request message can include information about multiple mobile terminals and multiple MBMS services, making a single procedure serve multiple functions that previously required separate procedures for each service and terminal
2Reliability
If frequent MBMS attach/detach request messages are transmitted when mobile terminals move, then service reception is maintained, but network efficiency decreases due to increased signaling activity
Solution Approach 1:
The patent implements periodic action by transmitting attach request messages only at specific transition points (when a mobile terminal moves from one network area to another) rather than continuously. This periodic approach maintains service reception while minimizing signaling activity to only when necessary
Solution Approach 2:
The patent performs preliminary action by including all relevant MBMS service information in the attach request message before the actual service activation. The serving RNC prepares and transmits comprehensive service lists in advance, allowing the drift RNC to process all services in a single operation rather than requiring multiple subsequent signaling exchanges
Data Source
AI summary
A method and apparatus is provided for providing one or more point-to-multipoint services, such as a multimedia broadcast/multicast service (MBMS), to one or more mobile terminals, or user equipment (UE). When one or more mobile terminals move to a new area of a mobile communication system managed by a different network element after joining a service, information is transmitted between network elements in a manner that facilitates the continued reception of the service by the mobile terminals that have moved while conserving network resources and increasing efficiency of the mobile communication system.