Radio Network Controller Subscriber Detection for MBMS Resource Optimization
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Solution Overview
Problem
Radio communication systems face inefficiencies in transmitting payload information for MBMS services, as existing methods often result in unnecessary occupation of radio resources and delays due to the uniform distribution of subscriber stations, leading to potential overload situations.
Innovation Solution
A method where subscriber stations are notified with a request for a reply in some cases, and payload information transmission occurs only after a reply is received, allowing for the avoidance of unnecessary transmission in areas without receiving subscribers, and grouping stations by radio cells to optimize resource use, with decision criteria determining whether a reply is necessary based on network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If payload information is transmitted uniformly across all radio cells, then all subscriber stations can potentially receive the information, but radio resources are unnecessarily occupied in areas without subscribers
Solution Approach 1:
The system performs preliminary actions by sending notification messages to subscriber stations before actual payload transmission. These notifications include requests for replies, allowing the network to determine in advance whether subscribers are present in specific radio cells. This preliminary check prevents unnecessary payload transmission in areas without subscribers, resolving the contradiction between reliable delivery and resource efficiency.
2Speed
If payload information is transmitted without requesting replies, then transmission speed is faster, but the system cannot determine whether subscribers are present to receive the information
Solution Approach 1:
The system implements feedback mechanisms where notification messages include requests for replies from subscriber stations. When payload information needs to be transmitted, the network sends notifications and waits for replies confirming subscriber presence. This feedback loop provides the necessary information about which radio cells contain subscribers, enabling targeted transmission that maintains both speed and information accuracy.
3Measurement precision
If the system requests replies from all subscriber stations, then accurate subscriber presence information is obtained, but the system may become overloaded with reply messages
Solution Approach 1:
The system applies local quality by sending notification messages with reply requests only to specific radio cells where payload information is intended to be transmitted, rather than uniformly to all cells. This localized approach ensures that only relevant subscriber stations are contacted, maintaining accurate presence detection while preventing system overload from unnecessary reply requests across the entire network.
Data Source
AI summary
A method and radio communication system for the transmit useful information as a service to several user stations with at least one radio network controller, at least one base station and at least one user station. The radio network controller is connected to an access device in a core network. The useful information is provided to several users as a service, whereby the user stations of the users are informed before the transmission of the useful information. According to the invention, the notification for the user stations of the users at least partly comprises a request for a response and the transmission of the useful information at least partly occurs after receipt of the response.