UE-Aided Fast Carrier Selection for Wireless Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently managing interference and optimizing carrier selection, leading to degraded performance and increased latency, especially as demand for mobile broadband access continues to rise.
Innovation Solution
The implementation of UE-aided fast carrier selection methods, where user equipment (UE) determines and transmits carrier selection data to the base station, enabling proactive and reactive carrier selection strategies to optimize channel quality and reduce overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station requests channel quality information from the UE, then the base station can make informed carrier selection decisions, but this increases signaling overhead and latency
Solution Approach 1:
The UE performs channel quality measurements and prepares carrier selection data in advance, before the base station requests it. The UE determines whether to transmit this data based on comparisons with thresholds, so that when the base station needs the information, it is already available or quickly ready, reducing the time for carrier selection decisions.
2Reliability
If the UE always transmits carrier selection data, then the base station has up-to-date channel quality information, but this increases signaling overhead and network traffic
Solution Approach 1:
The UE applies different transmission strategies based on local conditions. It compares channel quality measurements against thresholds and only transmits carrier selection data when the conditions warrant it (e.g., when quality degrades below a threshold or improves significantly). This selective transmission reduces unnecessary signaling overhead while maintaining information freshness when needed.
Solution Approach 2:
Instead of always transmitting carrier selection data (excessive action), the UE transmits only when necessary based on threshold comparisons (partial action). This reduces the volume of signaling traffic while ensuring that the base station receives critical information when channel conditions change significantly.
3Reliability
If the UE monitors multiple component carriers continuously, then the UE can identify carriers with poor channel quality, but this increases power consumption and processing complexity
Solution Approach 1:
The UE performs channel quality measurements periodically on monitored component carriers and compares results against thresholds. Instead of continuous monitoring and transmission, the UE checks at intervals and only triggers data transmission when measurements indicate significant changes (below thresholds), reducing power consumption while maintaining detection capability.
4Reliability
If the base station retries transmission on different carriers without UE assistance, then the system can recover from transmission failures, but this increases latency and reduces efficiency
Solution Approach 1:
The UE provides feedback to the base station about channel quality on monitored carriers by transmitting carrier selection data when measurements fall outside thresholds. This feedback enables the base station to make informed carrier selection decisions for retransmissions, avoiding blind retries and reducing the time needed to recover from transmission failures.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In one aspect, a method of wireless communication includes monitoring, by a user equipment (UE), a first component carrier (CC) of a plurality of CCs for a first channel, determining, by the UE during monitoring, one or more channel measurements for a set of candidate CCs of the plurality of CCs, determining, by the UE based on a determination at the UE, whether to include carrier selection data in an uplink transmission, the carrier selection data based on one or more channel measurements, and transmitting, by the UE, the carrier selection data in the uplink transmission. Other aspects and features are also claimed and described.