Wireless Transmit Unit Multi-Instance Scheduling Conflict Resolution
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Solution Overview
Problem
In wireless communication networks with distributed scheduling functionality across multiple physical locations or nodes, conflicts arise due to independent scheduling decisions made in each node, particularly when backhaul links have high latency, leading to improper signal transmission and decoding issues.
Innovation Solution
The implementation of methods and systems that allow a wireless transmit/receive unit (WTRU) to manage multiple serving sites by using time or frequency segregation for transmission requests from different MAC instances, along with power scaling and quality of service (QoS) reporting, to prevent conflicts and ensure proper resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If distributed scheduling functionality is implemented across multiple physical locations or nodes, then system capacity and coverage are improved, but scheduling conflicts and coordination difficulties arise due to independent scheduling decisions
Solution Approach 1:
The patent segments the scheduling functionality by introducing multiple independent MAC instances (first MAC instance, second MAC instance) that operate separately at different serving sites. Each MAC instance handles scheduling independently, allowing distributed operation while the patent manages conflicts through specific conflict resolution mechanisms that identify and resolve overlapping scheduling decisions between instances.
Solution Approach 2:
The patent introduces a coordinating mechanism that acts as an intermediary between independently scheduled MAC instances. This coordinator manages scheduling conflicts by receiving scheduling decisions from multiple instances, identifying conflicts, and resolving them through predefined rules, thereby enabling distributed scheduling while maintaining overall system coordination.
2Adaptability or versatility
If independent scheduling decisions are made in each node, then scheduling flexibility and adaptability are improved, but transmission conflicts and signal decoding issues occur due to lack of tight coordination
Solution Approach 1:
The patent implements dynamic conflict resolution mechanisms that adapt scheduling decisions in real-time. When transmission conflicts are detected between MAC instances, the system dynamically adjusts scheduling parameters, prioritizes certain transmissions, or reschedules conflicting signals based on current system conditions, thereby maintaining flexibility while preventing harmful interference.
Solution Approach 2:
The patent incorporates feedback mechanisms where scheduling decisions from multiple MAC instances are monitored and evaluated. When conflicts are detected, the system uses feedback from the conflict resolution process to adjust future scheduling decisions, ensuring that independent scheduling flexibility does not lead to persistent transmission conflicts.
3Quantity of substance
If multiple MAC instances are configured for different serving sites, then service coverage and user capacity are improved, but resource allocation complexity and device configuration difficulty increase
Solution Approach 1:
The patent creates a universal framework where multiple MAC instances follow standardized configuration patterns and conflict resolution procedures. Despite serving different sites and users, all MAC instances operate according to the same structural principles and coordination mechanisms, which simplifies the overall configuration process and reduces the complexity burden of supporting multiple instances.
Solution Approach 2:
The patent manages configuration complexity by allowing MAC instances to differ in specific operational parameters (such as serving site identifiers, resource allocation parameters) while maintaining consistent structural parameters. This approach enables flexible adaptation to different serving sites without requiring complete reconfiguration of each instance, thereby supporting increased user capacity with manageable complexity.
Data Source
AI summary
Methods and systems are disclosed for providing physical layer resources to a plurality of medium access control (MAC) instances that are associated with different serving sites that are independently scheduled. For example, a WTRU may utilize a first physical layer configuration for transmitting to a first serving site associated with a first MAC instance. The WTRU may utilize a second physical layer configuration for transmitting to a second serving site associated with a second MAC instance. The WTRU may prevent conflicts between transmission requests from the first MAC instance and transmission requests from the second MAC instance. For example, preventing the conflicts may include utilizing one or more of time segregation or frequency segregation for transmissions associated with the first MAC instance and transmissions associated with the second MAC instance.