Beam Set Operation for Wireless Network Nodes
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Solution Overview
Problem
Wireless network nodes face interference and reduced data rates due to limited spectrum and high antenna usage, especially at lower frequencies, which limits capacity and performance.
Innovation Solution
Implementing a beam set operation with time-splitting and spatial partitioning, using beam frames to broadcast acquisition information on multiple beam sets, each transmitting during a designated time period, to minimize interference and maximize spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antennas are used to improve capacity, then system capacity increases, but interference increases due to spatial reuse of limited spectrum
Solution Approach 1:
The cell is segmented into multiple beam sets that transmit acquisition information at different time instances. This temporal segmentation allows spatial reuse of spectrum while reducing interference, as different beam sets occupy different time slots within the same frequency resources.
Solution Approach 2:
Beam frames are transmitted periodically with a defined period X, where each beam frame contains acquisition information for a specific beam set. This periodic transmission pattern enables systematic spatial partitioning and interference management across multiple time instances.
2Reliability
If beamforming is applied on initial access channels to satisfy link budgets at higher frequencies, then link budget is improved, but system complexity increases
Solution Approach 1:
The initial access process is segmented into multiple beam frames, each dedicated to a specific beam set. This segmentation allows the system to manage complexity by processing one beam set at a time rather than handling all beams simultaneously, while still achieving the necessary link budget through focused beamforming.
Solution Approach 2:
Acquisition information is preliminarily organized into distinct beam sets that are transmitted in a predetermined sequence. This preliminary structuring simplifies the initial access process by pre-defining the beam transmission order and reducing real-time decision complexity.
3Area of stationary object
If acquisition information is broadcast over the full cell, then coverage is maximized, but interference increases and spectral efficiency decreases
Solution Approach 1:
The system transitions from spatial-only coverage to time-space dimensionality by introducing temporal separation through beam frames. Acquisition information is broadcast across the full coverage area but at different time instances for different beam sets, maintaining coverage while reducing co-channel interference through the added time dimension.
Data Source
AI summary
In some embodiments, a network node uses beam frames to broadcast acquisition information on a plurality of beam sets (N). Each beam sets includes a plurality of beams (K). The network node broadcasts the acquisition information one beam set at a time during a corresponding one of a periodic plurality (X) of the beam frames. The periodic plurality (X) of beam frames occur with a first periodicity and are within a periodic plurality (Y) of subframes occurring with a second periodicity.