Wireless Spectrum Management via Bandwidth Part Configurations
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Solution Overview
Problem
Conventional wireless networks face disruptions when wireless channels are lost due to higher priority entities, leading to loss of wireless connectivity for mobile communication devices.
Innovation Solution
A communication management resource partitions allocated wireless bandwidth into multiple selectable bandwidth part configurations, allowing seamless switchover to alternative configurations when a channel is revoked, thereby maintaining continuous connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spectrum access system finds and assigns an alternate channel when a channel is lost, then the wireless system can eventually restore connectivity, but the system requires rebooting which causes loss of wireless connectivity to mobile communication devices
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple bandwidth part configurations (BWP1, BWP2, BWP3) with different channel combinations before any channel loss occurs. When a channel is revoked (e.g., channel 7), the system can immediately switch to a pre-prepared alternative configuration (e.g., BWP2 or BWP3) without needing to reboot or perform time-consuming channel search and assignment procedures. This eliminates connectivity interruption while still ensuring reliable operation.
Solution Approach 2:
The patent implements dynamics by making the bandwidth part configuration selectable and switchable in real-time. The system can dynamically transition between different BWP configurations based on channel availability, allowing seamless adaptation to changing spectrum conditions without system reboot. This dynamic switching capability maintains continuous connectivity while adapting to incumbent radar operations.
2Adaptability or versatility
If the system uses conventional channel assignment methods when a channel is lost, then it can handle incumbent radar operations, but it causes disruptive rebooting that affects cellular wireless deployments
Solution Approach 1:
The patent applies segmentation by dividing the wireless bandwidth into multiple selectable bandwidth part configurations (BWP1, BWP2, BWP3), each representing a different channel combination. This segmentation allows the system to handle incumbent radar operations by switching between segmented configurations without disrupting service. Each BWP is independently configurable, enabling granular adaptation to spectrum conditions while maintaining continuous operation.
Solution Approach 2:
The patent uses parameter changes by modifying the bandwidth part configuration parameters (channel combinations) in real-time based on incumbent radar activity detection. Instead of rebooting the system, the network controller changes the BWP configuration parameters to select an alternative configuration that excludes the revoked channel, thereby adapting to new spectrum conditions while maintaining ease of operation and service continuity.
3Reliability
If multiple bandwidth part configurations are pre-configured and switchable, then seamless channel change is achieved without rebooting, but the device complexity increases due to multiple configuration management requirements
Solution Approach 1:
The patent uses an intermediary approach by introducing a network controller that centrally manages multiple bandwidth part configurations. The network controller stores and manages the BWP configurations (BWP1, BWP2, BWP3) and handles the switching logic based on channel availability feedback. This intermediary architecture distributes the complexity from the communication devices to the network controller, allowing devices to maintain simple operation while the system achieves high reliability through centralized configuration management.
Data Source
AI summary
A communication management resource controls operation of multiple wireless stations in a network environment. For example, the communication management resource receives allocation of first wireless bandwidth, the first wireless bandwidth including multiple wireless channels. The communication management hardware partitions the first wireless bandwidth into multiple selectable bandwidth part configurations. In one implementation, the first wireless bandwidth being partitioned with respect to channel boundaries associated with the multiple wireless channels. The communication management resource controls use of the bandwidth part configurations by multiple communication devices to provide wireless access to a remote network. In response to a condition in which a previously allocated wireless channel is no longer available based on use of the wireless channel by a higher priority user, the communication management resource implements a seamless switchover from a first bandwidth part configuration to a second bandwidth part configuration.