Radio Network Node Interleaved Sparse Antenna Sub-Arrays
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Solution Overview
Problem
Massive MIMO systems face challenges in supporting higher operational bandwidth and dual band operations due to increased cost and power consumption, as existing RF transceivers are limited by their maximum operational bandwidth.
Innovation Solution
A radio network node with a plurality of antenna elements and transceivers, where a controller adjusts subsets of transceivers to operate at different frequency bands, forming interleaved sparse antenna sub-arrays to achieve higher operational bandwidth with reduced cost and power consumption, while maintaining system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single RF transceiver supports high operational bandwidth, then bandwidth capability is improved, but cost and power consumption increase
Solution Approach 1:
The antenna array is divided into multiple sub-arrays, each served by a separate RF transceiver with limited bandwidth. The first sub-array operates at a first frequency band while the second sub-array operates at a second frequency band, allowing the system to achieve wideband operation through multiple narrowband transceivers rather than requiring a single wideband transceiver.
2Adaptability or versatility
If a single RF transceiver supports high operational bandwidth, then bandwidth capability is improved, but device complexity increases
Solution Approach 1:
The system segments the antenna array and transceiver functions into multiple independent units. Each transceiver handles a specific frequency band for a specific sub-array, reducing the complexity requirements for each individual transceiver while achieving overall wideband capability through the combined operation of multiple simpler transceivers.
Solution Approach 2:
Multiple transceivers with identical or similar limited-bandwidth designs are used to serve different frequency bands. Each transceiver performs the same function but operates in a different frequency range, allowing the system to achieve multi-band operation without requiring each transceiver to be complex enough to handle all bands simultaneously.
3Adaptability or versatility
If multiple transceivers are used to support dual band operation, then frequency band coverage is improved, but device complexity increases
Solution Approach 1:
The antenna array is segmented into sub-arrays that can be independently assigned to different frequency bands. The controller manages the assignment of transceivers to sub-arrays and frequency bands, allowing flexible dual-band operation without requiring each transceiver to be configured for multiple bands simultaneously.
Solution Approach 2:
Each transceiver is independently configured and operated by the controller, which automatically manages the assignment and coordination of multiple transceivers to achieve dual-band operation. This self-service approach reduces the complexity of manual configuration and management of multi-band transceivers.
Data Source
AI summary
Radio network node and method therein, for communication in a wireless communication system. The radio network node comprises: a plurality of antenna elements, a plurality of transceivers, wherein the plurality of transceivers comprise a first subset of the plurality of transceivers coupled to a first subset of the plurality of antenna elements and a second subset of the plurality of transceivers coupled to a second subset of the plurality of antenna elements; and a controller configured to adjust the first subset of the transceivers to work at a first frequency band, and to adjust the second subset of the transceivers to work at a second frequency band.