Base Station Scan Response for Multi-Carrier Handover
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Solution Overview
Problem
In multi-carrier communication systems, there is no solution for a base station to send a scan response to a terminal, and when a base station initiatively sends a handover request, it does not include the carriers the terminal needs to scan.
Innovation Solution
A method where a base station receives a scan request from a terminal, determines the necessary carrier, and sends a scan response message with configuration parameters such as carrier identifier, frequency, and bandwidth, or includes carrier information in a handover request signaling for the terminal to scan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a base station in a multi-carrier system provides multiple carriers for service transmission, then service capacity and efficiency are improved, but there is no mechanism for the base station to send scan response messages to terminals or include carrier information in handover request signaling
Solution Approach 1:
The base station pre-prepares scan response messages containing carrier configuration parameters (carrier identifier, frequency, bandwidth) and handover request signaling with carrier information before handover is needed. This allows the terminal to perform scans efficiently when handover is triggered, without requiring complex real-time decision-making mechanisms.
Solution Approach 2:
The patent introduces standardized signaling messages (scan response message and handover request signaling) as intermediaries between the base station and terminal. These messages carry carrier information and enable the terminal to perform scans and execute handovers without requiring complex direct coordination mechanisms between base station and terminal.
2Reliability
If a terminal needs to scan multiple carriers for handover, then service continuity is improved, but the terminal lacks necessary carrier information to perform effective scanning
Solution Approach 1:
The base station sends scan response messages to terminals in response to scan requests, providing feedback containing specific carrier configuration parameters (carrier identifier, frequency, bandwidth). This feedback mechanism ensures terminals receive accurate carrier information needed for effective scanning and handover execution.
Solution Approach 2:
The base station includes carrier information in handover request signaling sent to the terminal before handover execution. This preliminary provision of carrier information enables the terminal to perform scans immediately upon receiving the handover request, ensuring service continuity without information loss.
3Measurement precision
If a base station sends detailed carrier configuration parameters in scan response messages, then terminal scanning accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential carrier configuration parameters (carrier identifier, frequency, bandwidth) needed for terminal scanning from the complete base station configuration. By sending only these specific parameters in scan response messages and handover request signaling, the system achieves accurate terminal scanning while minimizing signaling overhead.
Data Source
AI summary
The present invention discloses a method for sending a scan response based on a multi-carrier system, and a base station, wherein the method comprises: a base station receives a scan request signaling sent by a terminal; and responding to the scan request signaling, the base station determines a carrier the terminal needs to scan and sends a scan response message to the terminal.