Overlapping Carrier Aggregation for Non-Standard Bandwidth Use
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies due to unused bandwidths between standard bandwidths, leading to spectrum waste and increased costs for organizations purchasing non-standard bandwidths.
Innovation Solution
Implementing intraband overlapping carrier aggregation, where component carriers overlap within the purchased bandwidth, allowing efficient use of all network resources without extending into neighboring networks, and managing signal transmission on specific carriers to avoid waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard bandwidth component carriers are used, then compatibility with 3GPP standards is maintained, but non-standard bandwidth portions cannot be utilized leading to spectrum waste
Solution Approach 1:
The patent segments the available spectrum into multiple component carriers, where the first component carrier uses a standard bandwidth (e.g., 5 MHz, 10 MHz, 15 MHz, or 20 MHz) to maintain 3GPP compatibility, and the second component carrier utilizes the remaining non-standard bandwidth portion. This segmentation allows the system to simultaneously support standard-compliant devices and fully utilize the purchased spectrum resources.
Solution Approach 2:
The patent introduces a new dimension to carrier aggregation by allowing carriers with different bandwidths to be aggregated together. Traditionally, carrier aggregation involved carriers of the same bandwidth, but this patent extends the concept to aggregate carriers of differing sizes, enabling efficient use of non-standard bandwidth allocations while maintaining compatibility with standard bandwidth devices through the first carrier.
2Loss of energy
If carrier aggregation with different bandwidths is implemented, then spectrum utilization is improved, but device compatibility with standard bandwidths is compromised
Solution Approach 1:
The first component carrier serves multiple functions: it provides standard-compliant service for conventional devices and simultaneously acts as a reference carrier for the carrier aggregation configuration. By transmitting control information and data on this standard-compliant carrier, the system maintains universality and compatibility with existing 3GPP devices while enabling advanced spectrum utilization through the second carrier.
Solution Approach 2:
The first component carrier acts as an intermediary between standard-compliant devices and the non-standard bandwidth resources. It provides a familiar interface for standard devices while enabling access to the aggregated second carrier, thus mediating between legacy device requirements and advanced spectrum utilization capabilities.
3Loss of energy
If overlapping frequency bands are used for component carriers, then bandwidth utilization is maximized, but signal interference may increase
Solution Approach 1:
The patent applies local quality by assigning different functions to different portions of the spectrum. The first component carrier (with standard bandwidth) is optimized for control information and compatibility, while the second component carrier (with non-standard bandwidth) is optimized for additional data capacity. This functional differentiation within the overlapping frequency bands reduces interference by clearly defining the role of each carrier portion.
Data Source
AI summary
A new radio base station establishes a first and a second component carrier in carrier aggregation. The first and second component carrier overlap each other. The base station transmits signaling and control information exclusively on the first component carrier. The base station transmits data packets on the first component carrier and on a non-overlapping portion of the second component carrier.