MBMS UE Feedback Control via Access Probability
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Solution Overview
Problem
Current MBMS systems lack an effective method for the network side to collect UE information, leading to inefficiencies in activating or deactivating the MBSFN transmission mode and potentially causing uplink congestion.
Innovation Solution
A method where UE sends dedicated RRC signaling carrying feedback information to the network side upon trigger conditions, allowing the network to collect statistics and send a feedback stop indicator when requirements are met, thereby reducing uplink resource load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all UEs continuously send feedback information to the network side, then the network side can obtain accurate UE reception status information, but uplink congestion occurs and uplink resources are wasted
Solution Approach 1:
The patent applies partial action by introducing an access probability parameter that determines whether a UE sends feedback. Instead of requiring all UEs to send feedback (excessive action), only a subset of UEs selected based on the access probability actually send feedback information. This partial participation achieves sufficient statistical accuracy for the network to determine MBSFN transmission mode activation while avoiding uplink congestion from all UEs transmitting simultaneously.
2Adaptability or versatility
If the network side initiates a counting process to obtain the number of users receiving MBMS service, then the network side can activate or deactivate MBSFN transmission mode, but uplink resources are consumed and uplink congestion may occur
Solution Approach 1:
The patent implements partial action by using an access probability parameter to control the proportion of UEs that participate in the counting process. The network side configures this probability such that only a necessary subset of UEs send feedback information, providing sufficient statistical data for MBSFN mode decisions while minimizing uplink resource consumption. This avoids the excessive resource usage that would occur if all UEs participated in the counting process.
3Speed
If UEs send feedback information frequently to ensure accurate statistics collection, then the network side can make timely decisions on MBSFN transmission mode, but uplink resource load increases
Solution Approach 1:
The patent applies partial action by configuring an access probability that limits the number of UEs sending feedback at any given time. This allows the network to collect sufficient statistical information for timely MBSFN mode decisions while controlling the uplink resource load. The probability parameter ensures that feedback is frequent enough to maintain decision timeliness but not so frequent as to cause resource exhaustion.
Data Source
AI summary
The disclosure provides a method and system for collecting statistics of UE information in MBMS. A UE sends a dedicated RRC signaling carrying feedback information to a network side when a trigger condition is satisfied; the network side collecting statistics of UE information according to the feedback information and sends, when the collected statistics satisfy a requirement, a feedback stop indicator to the UE; and the UE stops sending the feedback information after receiving the feedback stop indicator. With the solutions, statistics of the UE information can be collected by the network side, and the requirements for activating or deactivating the MBSFN transmission mode of the MBMS service by the network side can be met; the network side instructs the UE to stop feeding back with full consideration of load of uplink resources, so that load of uplink resources can be reduced, and uplink resources can be saved.