Standalone MBSFN Cell Acquisition via UE Avoidance Schemes
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Solution Overview
Problem
Legacy user equipment (UE) is unable to acquire standalone multicast broadcast single frequency network (MBSFN) cells, leading to wasted time and battery power as they detect but cannot connect to these cells, while non-legacy UEs can acquire them, improving user experience.
Innovation Solution
Implementing UE avoidance schemes that allow non-legacy UEs to acquire standalone MBSFN cells and prevent legacy UEs from attempting to connect by using modified cell acquisition information characteristics, such as modified scrambling sequences or cyclic prefix lengths, to differentiate between legacy and non-legacy UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standalone MBSFN cells are deployed to improve broadcast service quality, then user experience for non-legacy UEs is improved, but legacy UEs waste time and battery power attempting to acquire these cells
Solution Approach 1:
The patent modifies cell acquisition information parameters (such as adding specific flags or changing information elements in system broadcast messages) to indicate whether a cell is a standalone MBSFN cell. This parameter change allows legacy UEs to identify and avoid these cells during cell selection, preventing them from wasting battery power while enabling non-legacy UEs to successfully acquire and use these cells for improved broadcast service quality
2Productivity
If cell acquisition information is broadcast for standalone MBSFN cells, then non-legacy UEs can detect and acquire these cells, but legacy UEs detect the information and attempt unsuccessful connection
Solution Approach 1:
The patent introduces an intermediary indicator or flag within the cell acquisition information that acts as a mediator between legacy and non-legacy UEs. This intermediary element carries additional information about cell type or compatibility, allowing legacy UEs to recognize standalone MBSFN cells as unsuitable for acquisition without preventing non-legacy UEs from successfully acquiring them, thus resolving the time loss issue while maintaining productivity
Data Source
AI summary
Standalone MBSFN cells may provide an improved user experience for an individual with a non-legacy UE since the bandwidth of that cell is mostly allocated to broadcasting streaming services. However, an individual with a legacy UE may be able to detect cell acquisition information associated with a standalone MBSFN cell but not to acquire standalone MBSFN cells. In order to solve this problem, the present disclosure provides various UE avoidance schemes that enable non-legacy UEs to acquire a standalone MBSFN cell and prevents legacy UEs from trying to acquire a standalone MBSFN only cell. The apparatus may receive cell acquisition information associated with an eMBMS standalone cell. The apparatus may detect a UE avoidance scheme based on a characteristic associated with the cell acquisition information. The apparatus may perform cell acquisition with the eMBMS standalone cell based on the characteristic.