Frequency Switching in Wireless Links for Seamless Network Handover
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Solution Overview
Problem
Deploying new communication networks is costly and time-consuming, requiring efficient handover processes between different network generations to maintain communication continuity and provide optimal service to users.
Innovation Solution
A method involving frequency switching and control signal transmission to dynamically adapt the wireless link's frequency between different communication networks, reducing control signaling and enabling seamless handovers without interrupting ongoing communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover between different communication networks is performed using traditional control signaling methods, then communication continuity can be maintained, but the handover process becomes lengthy and complex
Solution Approach 1:
The patent applies preliminary action by performing frequency switching before the actual handover between networks. The base station switches the operating frequency of the wireless link to a frequency in the target network's band prior to completing the handover procedure, so that when the handover is finalized, the frequency is already appropriate, reducing handover time and complexity
Solution Approach 2:
The patent segments the handover process into distinct phases: frequency switching phase and network handover phase. By separating these operations, the system can manage control signaling more efficiently and reduce the overall handover duration while maintaining communication continuity
2Speed
If frequency switching is performed without prior control signal transmission, then handover speed increases, but control and coordination between networks becomes difficult
Solution Approach 1:
The patent transmits control signals in advance before frequency switching occurs. These preliminary control signals carry necessary coordination information between base stations and networks, enabling fast frequency switching while maintaining proper control and coordination through pre-established signaling
3Reliability
If new communication networks are deployed extensively, then service coverage and quality improve, but deployment costs and time increase significantly
Solution Approach 1:
The patent enables base stations to operate with multiple frequency bands and support multiple communication networks simultaneously. This multi-functionality allows a single network infrastructure to serve both legacy and new networks, reducing deployment time and costs while maintaining service quality through seamless frequency switching
Solution Approach 2:
The patent merges the operation of different communication networks by allowing frequency switching between networks at the base station level. This combining approach enables shared infrastructure utilization, reducing the need for separate dedicated infrastructure for each network and accelerating deployment
Data Source
AI summary
A method for transmitting data in a telecommunication system including at least one communication network CNW1 including a group of radio base stations B1 able to communicate with at least one mobile terminal MT through a wireless link, which method includes at least one frequency switching step for switching an operating frequency of the wireless link from a first frequency band to a second frequency band, and a control signal transmission step in the course of which a slot including control data (Cnt, Swrq, Mst) is transmitted through a communication channel established over said wireless link. The method upgrades an existing network by allowing it to use a new band of available frequencies for the operation of the wireless link.