Backhaul-Linked DECT Base Stations for Higher Concurrent Call Capacity

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Solution Overview

Problem

DECT systems face limitations in the maximum number of concurrent calls a single base station can support, which is not increased by adding repeaters, restricting scalability and effective use of extended coverage areas.

Innovation Solution

Implementing a system with a first base station that includes a second transceiver for communication via a backhaul network with other base stations, allowing for increased concurrent call capacity by using different frequency bands and technologies, and integrating a call control processor to manage communications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If wireless repeaters are added to extend DECT coverage range, then coverage area is improved, but the maximum number of concurrent calls remains limited by base station channel capacity

Engineering Contradiction:

Improvecoverage areaVSAvoidconcurrent call capacity

Core Design Contradiction:

Area of stationary objectVSProductivity

Solution Approach 1:

The system segments the network into multiple base stations, each capable of independently handling concurrent calls. Instead of one base station with repeaters (limited to 8 calls total), multiple base stations can each handle up to 8 calls, providing scalable concurrent call capacity while maintaining extended coverage through the network of base stations and repeaters.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A network controller acts as an intermediary to manage call routing between multiple base stations. The network controller coordinates call setup, teardown, and handover across base stations, enabling seamless roaming and call continuity while allowing each base station to utilize its full channel capacity for concurrent calls.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If base station channels are allocated to repeater connections, then repeater functionality is enabled, but available channels for concurrent calls are reduced

Engineering Contradiction:

Improverepeater support capabilityVSAvoidavailable call channels

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The system segments the network into multiple base stations, each with its own set of channels. This eliminates the need for a single base station to allocate channels for both repeater connections and concurrent calls, as each base station can independently manage its channels while the network as a whole provides both repeater support and high concurrent call capacity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple base stations are merged into a coordinated network system where call management functions are distributed. The network controller combines resources across base stations to provide seamless call service, allowing each base station to maintain full channel availability for concurrent calls while the network collectively provides repeater support.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If a single base station supports both repeater connections and concurrent calls, then system simplicity is maintained, but system scalability is limited

Engineering Contradiction:

Improvesystem architectureVSAvoidsystem scalability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The network is segmented into multiple base stations with a centralized network controller. This segmentation allows the system to scale by adding more base stations without increasing the complexity of a single base station. Each base station maintains a standard, simple architecture while the network as a whole achieves high scalability and versatility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network controller provides universal management functions across all base stations, handling call routing, handover, and resource allocation. This multi-functional controller enables the system to scale while maintaining operational simplicity, as the same controller architecture can manage any number of base stations in the network.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250393038A1Systems for extending range of a base station via a backhaul network

Publication Date: 2025.12.25 VTECH TELECOMM

AI summary

A digital cordless telecommunication system includes a first base station having a first transceiver configured to transmit and receive voice and data packets, using a cordless telecommunication frequency band, between the first base station and a first set of handsets. The first base station further includes a second transceiver configured to transmit and receive, via a backhaul network, to at least one other base station configured to transmit and receive the voice and data packets using the cordless telecommunication frequency band. The first base station further includes one or more processors operatively coupled to the first transceiver and the second transceiver to control transmitting and receiving of the voice and data packets. The first base station also includes a call control processor operatively coupled to the processors, the call control processor controlling communication between the first base station and a local area network (LAN).