UE MBMS Measurement Reporting Load Control
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Solution Overview
Problem
In multimedia service transmission over wireless networks, especially in MBMS systems, there is a risk of overload due to simultaneous feedback responses from multiple UEs, which can lead to peaks in wireless interface load, as the network lacks knowledge of how many UEs will respond to measurement requests, causing potential overload situations.
Innovation Solution
Implementing a load control method where UEs use a separate communication means, such as a UC system, to report feedback, with the RAN controlling radio access and contention access parameters, and employing mechanisms like probability factor, random time, and Service Specific Access Class Barring to manage the reporting load and prevent overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UEs feed back responses simultaneously to the network, then the network can collect sufficient measurement data, but the wireless interface experiences peak load and potential overload
Solution Approach 1:
The network broadcasts measurement control information in advance before the actual measurement period, enabling UEs to prepare and schedule their feedback responses. This preliminary action allows the network to control when measurements are performed and manage UE reporting behavior, preventing simultaneous feedback peaks while ensuring sufficient data collection.
Solution Approach 2:
The patent implements periodic measurement periods with defined start and end times, during which UEs perform measurements and feed back responses. By structuring feedback as periodic rather than continuous, the network can manage load peaks through time-division while still collecting comprehensive measurement data across multiple periods.
2Adaptability or versatility
If the network broadcasts measurement control information to all UEs, then measurement coverage is maximized, but the network cannot control how many UEs will respond, causing load peaks
Solution Approach 1:
The network performs preliminary action by broadcasting measurement control information before the measurement period, allowing UEs to prepare their responses in advance. This enables the network to control the timing and scope of measurements, managing which UEs participate and when they report, thereby preventing unpredictable load peaks while maintaining broad coverage.
Solution Approach 2:
The patent introduces dynamic control mechanisms where the network can adjust measurement parameters and control information based on current network conditions. This dynamic approach allows the network to adapt the measurement scope and UE reporting behavior in real-time, balancing coverage requirements with load management capabilities.
3Loss of time
If UEs report feedback immediately after measurement, then response time is minimized, but the network experiences sudden load peaks
Solution Approach 1:
The network performs preliminary action by pre-announcing measurement control information and expected feedback timing before the actual measurement period. This allows UEs to schedule their responses at optimal times rather than immediately, smoothing out load patterns while maintaining acceptable response times through coordinated scheduling.
Solution Approach 2:
By structuring feedback as periodic responses within defined measurement periods, the network transforms immediate reactive reporting into scheduled periodic reporting. This periodic structure naturally distributes load over time while maintaining measurement timeliness, preventing sudden peaks through time-division of feedback transmissions.
Data Source
AI summary
An improved method and a communication means node implementing the method for load control in connection with a multimedia service transmission intended for multiple receivers over a wireless network are disclosed. The receivers in the wireless network are able to respond to requests communicated from an ordering entity by feeding back responses to a management entity in said wireless network. The feedback of these responses uses a different communication means, separate from said wireless network. This different communication means has limited communication resources. A transmission load caused in said different communication means by said feedback of said responses is according to the invention controlled by the different communication means itself.