Base Station Selection via Frequency Range Intersection
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Solution Overview
Problem
The current mobile communication systems, particularly in the transition to 5G, face challenges in meeting the higher transmission rate demands of user equipment (UE) due to the selected base station's operating frequency range not adequately supporting the required rates.
Innovation Solution
A communication method and device that allow user equipment (UE) to acquire and select a base station with an operating frequency range that has a larger intersection with its own supported range, enabling carrier aggregation and thus meeting the transmission rate demands by broadcasting and requesting system information that includes bandwidth details from multiple base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE selects a base station based on signal quality alone, then the connection establishment is simple and fast, but the transmission rate demand cannot be met due to insufficient operating frequency range
Solution Approach 1:
The base station broadcasts system information including operating frequency range support before the UE establishes connection. This preliminary action allows the UE to evaluate multiple base stations based on frequency range compatibility with its carrier aggregation capabilities before selecting a target base station, ensuring the selected base station can meet the UE's transmission rate demands.
Solution Approach 2:
The patent introduces bandwidth information as an additional selection parameter beyond signal quality. The UE compares its supported operating frequency range with the base station's supported operating frequency range to determine compatibility. This parameter change enables the UE to select a base station that not only has good signal quality but also provides sufficient bandwidth for high transmission rates.
2Measurement precision
If the base station does not broadcast bandwidth information, then the system information broadcast is simple and fast, but the UE cannot evaluate frequency range compatibility for base station selection
Solution Approach 1:
The system information broadcast serves multiple functions: it provides synchronization information, system configuration, and now also bandwidth information indicating the base station's operating frequency range support. This multi-functionality allows the UE to perform comprehensive base station evaluation without requiring separate signaling messages, thus avoiding additional time loss.
3Productivity
If the UE connects to a base station with insufficient operating frequency range, then connection establishment is quick, but the transmission rate requirement is not satisfied
Solution Approach 1:
The UE autonomously evaluates multiple base stations by comparing its supported operating frequency range with the base station's supported operating frequency range obtained from system information. The UE independently determines compatibility and selects a target base station that meets its carrier aggregation requirements, without requiring network-side assistance or complex coordination, thus maintaining ease of operation while ensuring transmission rate requirements are met.
Data Source
AI summary
The present disclosure provides a communication method and device and belongs to the field of mobile communication technologies. The method comprises: acquiring system information of a plurality of base stations, wherein the system information comprises first bandwidth information of the base station, and the first bandwidth information is used to indicate an operating frequency range supported by the base station during carrier aggregation; selecting a target base station from the plurality of base stations based on a plurality of pieces of first bandwidth information and second bandwidth information that the UE is configured; and sending a connection request to the target base station.