Neighbor Cell Measurement Reporting for Layer 1/2 Mobility Switching
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Solution Overview
Problem
Current communication systems face significant delays and increased signaling load due to the need for layer 3 reconfiguration during cell switching, which can be mitigated by implementing layer 1/layer 2 triggered mobility, but lack a solution for terminal equipment to report all measurement results of neighbor candidate cells.
Innovation Solution
An information transceiving method and apparatus that enables event-triggered measurement result reporting for neighbor candidate cells, allowing layer 1/layer 2 triggered mobility, reducing the load on measurement reporting and enabling efficient cell switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If layer 3 reconfiguration is used for cell switching, then mobility management is achieved, but system delay and signaling load increase
Solution Approach 1:
The patent segments the mobility management process by introducing layer 1/layer 2 triggered cell switching that operates independently from layer 3 reconfiguration. This allows cell switching to be handled at lower protocol layers (physical and MAC layers) without requiring upper layer involvement, thereby reducing system delay while maintaining mobility management functionality.
Solution Approach 2:
The patent implements preliminary action by pre-configuring measurement reporting resources and event-triggered reporting mechanisms at layer 1/layer 2 before cell switching is needed. The terminal equipment continuously monitors reference signals and evaluates event conditions, so when cell switching is required, the decision can be made immediately based on pre-established criteria without waiting for layer 3 processing.
2Reliability
If layer 3 reconfiguration is used for cell switching, then serving cell switching is achieved, but communication interruption time increases
Solution Approach 1:
The patent separates the cell switching function from layer 3 reconfiguration by implementing it at layer 1/layer 2. This segmentation allows the switching operation to be executed independently and rapidly at the physical/MAC layer, avoiding the time-consuming layer 3 signaling exchange and thereby reducing communication interruption time.
Solution Approach 2:
The terminal equipment performs self-service by autonomously evaluating measurement results against event conditions and triggering cell switching decisions at layer 1/layer 2 without requiring layer 3 intervention. This self-service mechanism enables rapid switching while maintaining reliability, as the terminal can independently determine when switching is needed based on pre-configured criteria.
3Loss of information
If all measurement results of neighbor candidate cells are reported, then complete mobility information is provided, but uplink resource load increases
Solution Approach 1:
The patent extracts only the essential measurement information needed for cell switching by implementing event-triggered reporting. Instead of reporting all measurement results, the system extracts and reports only those measurements that satisfy specific event conditions (e.g., when a neighbor cell's signal quality exceeds a threshold or differs significantly from the serving cell). This extraction approach provides complete mobility information while minimizing uplink resource consumption.
Solution Approach 2:
The patent applies local quality by configuring different reporting strategies for different neighbor candidate cells based on their individual characteristics and the terminal's current state. Event-triggered reporting allows the system to focus reporting resources on cells that are locally relevant to the current mobility situation, rather than uniformly reporting all cells. This ensures complete information for decision-making while optimizing uplink resource usage.
Data Source
AI summary
An information transceiving apparatus, applicable to a terminal equipment, includes: a first receiver configured to receive event triggered information of measurement result reporting of a neighbor candidate cell transmitted by a network device, the event triggered information being used to indicate the terminal equipment to trigger measurement result reporting of the neighbor candidate cell with an event as a condition, measurement of the neighbor candidate cell being used for layer 1/layer 2 triggered mobility; and a first transmitter configured to transmit a measurement report to the network device according to the event triggered information.