Joint TA and Cell Activation MAC CE for Inter-Cell Mobility
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing joint timing advance and cell activation signaling, particularly in supporting inter-cell mobility operations, which can lead to increased latency and overhead.
Innovation Solution
The implementation of a joint timing advance (TA) and cell activation medium access control control element (MAC CE) that combines a TA command and a cell activation command, allowing for efficient inter-cell mobility operations by reducing the need for separate signaling processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate signaling processes are used for timing advance and cell activation, then signaling reliability is improved, but signaling overhead and latency increase
Solution Approach 1:
The patent combines separate timing advance signaling and cell activation signaling into a single joint MAC CE message. This merging reduces the number of separate signaling transactions required during inter-cell mobility operations, thereby reducing latency while maintaining the reliability of both functions through integrated delivery in a single message block.
2Adaptability or versatility
If separate signaling processes are used for timing advance and cell activation, then functional independence is improved, but device complexity increases
Solution Approach 1:
The joint MAC CE message serves multiple functions simultaneously - it conveys both timing advance commands and cell activation commands in a single structure. This multi-functional approach reduces signaling complexity by eliminating the need for separate processing of multiple independent messages, while still maintaining the functional independence of timing advance and cell activation operations through distinct fields within the unified message structure.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information corresponding to a Layer 1 or Layer 2 (L1/L2) inter-cell mobility operation associated with an L1/L2 mobility configured cell set. The UE may receive, based on the configuration information, a joint timing advance (TA) and cell activation medium access control control element (MAC CE), wherein the joint TA and cell activation MAC CE comprises a TA command and a cell activation command. Numerous other aspects are described.