Dynamic Guest Carrier Bandwidth Allocation for MTC Devices
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Solution Overview
Problem
Wireless service providers face challenges in configuring base stations to offer service on multiple carriers with different bandwidths without requiring additional spectrum licenses, particularly when needing to support a narrower bandwidth carrier alongside a wider one, such as providing service for Machine-Type-Communication devices without expanding spectrum usage.
Innovation Solution
A method and system where a base station dynamically varies the bandwidth of a guest carrier defined within a host carrier based on the number of connected wireless client devices, allowing the guest carrier to occupy a narrower or wider portion of the host carrier's bandwidth as needed, enabling concurrent service on both carriers without conflicts or the need for additional spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a base station is configured to provide service on a wider bandwidth carrier (host carrier), then the service coverage and data capacity are improved, but the ability to provide service on a narrower bandwidth carrier (guest carrier) without additional spectrum is compromised
Solution Approach 1:
The patent implements a guest carrier nested within the frequency range of a host carrier. The guest carrier's frequency range is fully contained within the host carrier's frequency range, allowing the base station to provide service on both carriers simultaneously using the same physical spectrum resources. This nesting structure enables the base station to serve different types of devices (MTC devices on guest carrier, regular devices on host carrier) without requiring additional spectrum licenses.
2Ease of manufacture
If the guest carrier is allocated a fixed bandwidth within the host carrier, then the configuration is simple, but the system cannot adapt to varying demand for MTC services
Solution Approach 1:
The patent makes the guest carrier's bandwidth dynamic by configuring it based on the number of MTC devices detected in the coverage area. When many MTC devices are present, the base station allocates a wider bandwidth to the guest carrier to accommodate the traffic demand. When fewer MTC devices are present, the guest carrier bandwidth is reduced. This dynamic configuration allows the system to adapt to varying MTC service demand while still maintaining a relatively simple overall structure.
Solution Approach 2:
The patent changes the bandwidth parameter of the guest carrier based on the detected number of MTC devices. The base station monitors the quantity of MTC devices in the coverage area and adjusts the guest carrier's bandwidth parameter accordingly, selecting from a set of possible bandwidth values. This parameter change approach enables flexible adaptation to different service scenarios without fundamentally changing the system architecture.
3Quantity of substance
If the guest carrier occupies a larger portion of the host carrier's bandwidth, then more resources are available for MTC devices, but fewer resources remain for the host carrier
Solution Approach 1:
The patent implements a feedback mechanism where the base station monitors the number of MTC devices in the coverage area and uses this information to determine the appropriate bandwidth allocation for the guest carrier. The feedback loop continues as the base station continuously monitors MTC device presence and adjusts the guest carrier bandwidth accordingly. This feedback-based resource allocation ensures that resources are dynamically distributed between host and guest carriers based on actual service demand, optimizing overall system performance.
Data Source
AI summary
A base station provides service on a host carrier, the host carrier having a host-carrier frequency range that defines a host-carrier bandwidth. Further, the base station provides service on a guest carrier concurrently with the base station providing service on the host carrier, the guest carrier having a guest-carrier frequency range that is defined fully within and as a portion of the host-carrier frequency range and that defines a guest-carrier bandwidth narrower than the host-carrier bandwidth. And the base station dynamically varies the guest-carrier bandwidth based at least on variation in quantity of client devices connected with the base station on the host carrier.