Opportunistic Packet Scheduling for Multi-Carrier Throughput Enhancement
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Solution Overview
Problem
In multi-carrier systems, satellite positioning system (SPS) receivers experience interference and desensing due to concurrent operations with radio access technology (RAT) transceivers, leading to degraded performance and compromised location determination capabilities.
Innovation Solution
A method for managing the coexistence of SPS receivers with multiple RAT transceivers involves determining whether a transceiver can transmit a packet via a first frequency band based on coexistence rules, and if not, transmitting via a second frequency band to minimize interference, allowing opportunistic scheduling and concurrent operation of RAT transceivers without compromising SPS performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RAT transceiver transmits data via a first frequency band, then throughput is improved, but SPS receiver performance is degraded due to noise and interference
Solution Approach 1:
The system dynamically selects frequency bands for RAT transmission based on real-time SPS signal conditions. When SPS signals are detected in a frequency band, the RAT transceiver switches to an alternative frequency band, making the frequency band selection adaptive and dynamic rather than static
Solution Approach 2:
The system changes the frequency band parameter of RAT transmission to avoid interference with SPS signals. By monitoring SPS signal presence and adjusting the operating frequency band accordingly, the system maintains both high throughput and reliable SPS reception
2Object-affected harmful factors
If SPS receiver blanks signals during RAT transmission, then interference is reduced, but location determination capability is compromised
Solution Approach 1:
The system performs preliminary detection of SPS signals in frequency bands before RAT transmission begins. By identifying and avoiding frequency bands containing SPS signals in advance, the system eliminates the need for blanking SPS signals during transmission, thereby maintaining continuous location determination capability
3Adaptability or versatility
If multiple RAT transceivers operate concurrently, then system functionality is enhanced, but SPS receiver desensing is exacerbated
Solution Approach 1:
The system segments the frequency spectrum into multiple bands and assigns different RAT transceivers to different frequency bands. This segmentation allows multiple transceivers to operate concurrently without causing mutual interference or desensing to the SPS receiver, as each transceiver operates in its designated frequency segment
Data Source
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Figure 3A~3C
AI summary
Methods, systems, computer-readable media, and apparatuses for managing coexistence of a satellite positioning system (SPS) receiver with one or more transceivers are presented. In some embodiments, a device determines whether a first transceiver of the one or more transceivers in accordance with a first Radio Access Technology (RAT) is able to transmit a packet via a first frequency band within a time period based at least on a first coexistence rule. The first coexistence rule corresponds to an impact on the SPS receiver by operation of at least the first RAT on the at least the first transceiver. The device transmits the packet via a second frequency band in accordance with a second RAT based on the determination that the first transceiver in accordance with the first RAT is not able to transmit the packet via a first frequency band within the time period.