MAC CE Signaling Overhead Reduction via Temporary Reference Signal Indication
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Solution Overview
Problem
The existing methods for sending temporary reference signals in mobile communication systems result in significant overhead in MAC CE signaling, particularly when configuring multiple secondary cells for user equipment.
Innovation Solution
A method where a user equipment receives a MAC CE signaling from a base station, determines the secondary cell to be activated based on a first indication field, and receives a temporary reference signal in that secondary cell, thereby reducing the signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the base station indicates the transmission state of temporary reference signals for all secondary cells via MAC CE signaling, then the activation/deactivation process of secondary cells is sped up, but the overhead of MAC CE signaling becomes relatively large
Solution Approach 1:
The patent segments the indication information by introducing a first indication field that specifically identifies only those secondary cells requiring temporary reference signal transmission. This segmentation allows the MAC CE signaling to focus only on relevant cells rather than indicating all secondary cells, thereby reducing signaling overhead while maintaining fast activation/deactivation capability.
Solution Approach 2:
The patent applies local quality by making the indication information cell-specific through the first indication field. Each bit in the first indication field corresponds to a specific secondary cell, allowing targeted indication only for cells that need temporary reference signals. This localized approach reduces the overall signaling overhead compared to indicating all cells uniformly.
2Adaptability or versatility
If the base station configures multiple secondary cells for user equipment, then the system capacity and flexibility are improved, but the MAC CE signaling overhead increases significantly
Solution Approach 1:
The patent segments the large set of secondary cells into individually addressable units through the first indication field. Each bit position corresponds to a specific secondary cell, allowing the system to support multiple cells efficiently by indicating only those that require temporary reference signals, thus managing signaling overhead even with many configured cells.
Solution Approach 2:
The patent changes the parameter of indication efficiency by introducing a compact first indication field structure. This field uses bitwise encoding to represent multiple secondary cell states concisely, allowing the system to maintain high adaptability with multiple secondary cells while reducing the signaling overhead through efficient parameter representation.
Data Source
AI summary
A method and device for receiving a temporary reference signal is performed by a user equipment (UE), and includes: receiving, by the UE, a medium access control control element (MAC CE) signaling sent by a base station, in which the MAC CE signaling includes a first indication field; determining, by the UE, a secondary cell to be activated, in which the first indication field corresponds to the secondary cell to be activated; and receiving, by the UE, a temporary reference signal in the secondary cell to be activated.