Dynamic Macro Diversity Switching in New Radio
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Solution Overview
Problem
In wireless communication systems, especially in new radio (NR) communications, there is a challenge in maintaining optimal connectivity due to dynamic medium sharing and directional beam usage, which can lead to suboptimal signal transmission as base stations (BSs) may not always provide the strongest signal to user equipment (UEs) due to channel occupancy and scheduling conflicts.
Innovation Solution
Implementing a method for dynamic switching of communications between multiple BSs, allowing UEs to associate with a set of BSs and switch between them based on occupancy, directional beam availability, and scheduling priorities, ensuring that the UE communicates over the best available channel at any given time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic medium sharing is implemented, then spectrum utilization is improved, but connection reliability deteriorates because serving BS may not always provide strongest signal
Solution Approach 1:
The patent implements dynamic switching between multiple serving BSs based on real-time channel conditions. The UE can switch from a primary serving BS to a secondary serving BS when the primary BS reduces transmission power due to LBT failures or directional beam unavailability, ensuring continuous reliable connection while enabling dynamic medium sharing.
Solution Approach 2:
The system changes the serving BS parameter dynamically based on channel occupancy status. When the primary BS is occupied or cannot transmit in a given time period, the system transitions to an alternative BS, effectively changing the service provider parameter to maintain optimal connectivity.
2Productivity
If directional beams are used for mmWave communications, then bandwidth and throughput are improved, but connection stability deteriorates due to directional LBT and beam scheduling conflicts
Solution Approach 1:
The patent enables dynamic switching between different directional beams and serving BSs. When the current beam is blocked or the BS is busy with other UEs in different beam directions, the system can switch to an alternative beam and/or BS, maintaining stable connection while utilizing high-throughput directional communications.
Solution Approach 2:
The system adds the dimension of beam directionality to the serving BS selection. Instead of only switching between BSs, the UE can also switch between different directional beams, effectively adding angular diversity to the connection management approach.
3Reliability
If a UE is served by the strongest signal BS, then initial connection quality is improved, but adaptability to dynamic channel conditions deteriorates
Solution Approach 1:
The patent transforms the static serving BS assignment into a dynamic mechanism. The UE maintains a list of candidate BSs and can switch between them based on real-time channel conditions, LBT status, and beam availability, enabling the system to adapt to dynamic changes while maintaining good initial connection quality.
Solution Approach 2:
The system changes the serving BS parameter dynamically based on channel occupancy status. When the primary BS is occupied or cannot transmit in a given time period, the system transitions to an alternative BS, effectively changing the service provider parameter to maintain optimal connectivity.
Data Source
AI summary
Wireless communications systems and methods related to improving macro diversity are provided. A first wireless communication device communicates, in a frequency channel, a first signal with a user equipment (UE) during a first time period. The first wireless communication device coordinates, with a second wireless communication device, a communication of a second signal with the UE in the frequency channel during a second time period. The coordination with the second wireless communication device is based on a switch to coordinate with the second wireless communication device based on at least occupancy of the frequency channel. The second wireless communication device communicates, in the frequency channel, the second signal with the UE during the second time period based on the coordination. The first wireless communication device and the second wireless communication device are different. The first time period and the second time period are different.