PtMP Wireless Subchannel Partitioning for PLMR Throughput
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Solution Overview
Problem
Current Point to Multipoint (PtMP) wireless communication systems operating over Private Land Mobile Radio (PLMR) bands face limitations in throughput due to the narrow bandwidth of individual channels, which restricts data communication speeds and efficiency, especially when channels are not adjacent or continuous.
Innovation Solution
The system partitions the total bandwidth into multiple subchannels with a fixed bandwidth, allowing each sector to use a subset of these subchannels, and creates a subchannel bit map to indicate availability, enabling communication over combined adjacent or non-adjacent channels, thereby increasing data transmission speed and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If communication is performed over a single PLMR channel, then the system operates with simple channel configuration, but the throughput is limited by the narrow channel bandwidth
Solution Approach 1:
The patent divides the available PLMR bandwidth into multiple subchannels, each with a fixed bandwidth. These subchannels can be individually allocated to different sectors or combined to form virtual channels, enabling flexible throughput adjustment without requiring complex continuous frequency allocation
Solution Approach 2:
The patent introduces a new dimension of channel organization by creating subchannels with fixed bandwidth that can be combined in different configurations. This allows the system to achieve variable throughput by aggregating different numbers of subchannels while maintaining simple individual subchannel structures
2Productivity
If multiple adjacent or non-adjacent PLMR channels are combined to increase throughput, then data transmission speed improves, but interference from other subchannel signals increases
Solution Approach 1:
By segmenting the total bandwidth into fixed-width subchannels, the patent creates isolated frequency resources that can be selectively combined. This segmentation allows interference management by enabling the system to choose which subchannels to combine based on interference conditions
Solution Approach 2:
The patent implements dynamic subchannel allocation where the assignment of subchannels to sectors and the combination of subchannels into virtual channels can be adjusted based on traffic demands and interference conditions. This dynamic approach allows the system to optimize performance by avoiding highly interfered subchannels while maintaining high throughput
3Productivity
If PLMR channels are rearranged to make the band continuous, then bandwidth utilization improves, but the complexity of channel reconfiguration increases
Solution Approach 1:
The patent segments the PLMR band into fixed-width subchannels that can be independently allocated. This segmentation allows the system to achieve effective bandwidth utilization by combining available subchannels without requiring physical rearrangement of the underlying channel structure
Solution Approach 2:
The patent creates virtual continuous channels by copying and combining multiple physical subchannels. This virtualization allows the system to achieve the benefits of continuous bandwidth allocation without the complexity of physically reconfiguring the channel assignments
Data Source
AI summary
A system and method for PtMP wireless communication is provided. The PtMP wireless communication system can include a plurality of sectors each including a base station and a remote station(s). A total bandwidth the system can be determined based on a frequency range of a continuous band allocated to the system, or one or more PLMR channels when the system communicates over a Private Land Mobile Radio (PLMR) band having one or more channels. The total bandwidth can be portioned into subchannel(s), each having fixed subchannel bandwidth. Each sector can be assigned a subset of the plurality of subchannels. A subchannel bit map can be created and populated for the plurality of subchannels, specifying whether availability of each subchannel for the particular sector, and the base stations of each sector can communicate over the subchannels allocated to the at least one sector according to the respective populated subchannel bit map.