Location-Based Resource Scheduling for Wireless Propagation Delay Compensation
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Solution Overview
Problem
Conventional wireless communication scheduling methods fail to account for propagation delays over long distances, leading to lost communications and increased error rates, particularly in advanced wireless networks using signal reflections or satellite-based relays.
Innovation Solution
Implementing location-based resource scheduling by transmitting a propagation delay message from the base station to user devices, which adjusts their transmission timing to avoid interference with subsequent communication resources, ensuring data is received during a delayed reception window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional scheduling with standard time intervals is used, then communication protocol simplicity is maintained, but communication reliability deteriorates due to propagation delays over long distances
Solution Approach 1:
The patent applies local quality by implementing location-based resource scheduling that adapts to the specific propagation delay characteristics of each user device's geographic location. User devices at different distances from the base station receive customized timing adjustments rather than a uniform scheduling approach, allowing the system to maintain reliability for distant devices while preserving standard protocols for nearby devices.
Solution Approach 2:
The patent changes the timing parameter of communication resources based on user device location and propagation delay measurements. By dynamically adjusting the uplink transmission timing offset for devices experiencing significant propagation delays, the system resolves the contradiction between maintaining simple standard protocols and achieving reliable communication over extended distances.
2Length of moving object
If beam segmentation is implemented for long-distance communication, then communication distance is extended, but timing synchronization difficulty increases
Solution Approach 1:
The patent implements feedback mechanisms where user devices measure their propagation delay to the base station and report this information back. The base station then uses this feedback to determine appropriate timing adjustments for each device. This closed-loop feedback system enables precise timing synchronization even for devices communicating via reflected beams over extended distances.
Solution Approach 2:
The patent applies preliminary action by having user devices perform propagation delay measurements and report this information to the base station before actual data transmission begins. The base station uses this advance information to pre-calculate and communicate the appropriate timing offset to each device, ensuring synchronization is established prior to communication.
3Reliability
If propagation delay compensation is applied, then uplink transmission reliability is improved, but communication resource scheduling complexity increases
Solution Approach 1:
The patent segments the wireless communication system into multiple beams serving different geographic regions. Each beam is assigned dedicated time-frequency resources, and propagation delay compensation is applied independently within each beam. This segmentation allows the system to manage timing adjustments for distant devices without disrupting the scheduling of devices in other beams, thereby controlling overall system complexity.
Solution Approach 2:
The patent introduces a new dimension to resource scheduling by adding timing offset adjustments to the traditional time-frequency resource allocation. Instead of only allocating resources in time and frequency domains, the system now schedules resources in a three-dimensional space that includes timing offsets, allowing propagation delay compensation to be integrated into the resource scheduling framework in a systematic manner.
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AI summary
The present disclosure describes techniques and systems for location-based resource scheduling, to reduce or eliminate receiving transmissions, by the base station, over one or more communication resources allocated for another communication. In some aspects, a user device (102) establishes a wireless connection (106) with a base station (104). The user device (102) receives, from the base station (104), a propagation delay message (304). The propagation delay message (304) schedules a delay for a transmission of the user device (102). The delay is based on a location of the user device (1020) being outside of a standard distance (614) from the base station (104). The user device (102) then transmits, to the base station (104), the transmission according to the propagation delay message (304).