Wireless Relay Node Scheduling for Orthogonal Resource Allocation
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Solution Overview
Problem
Current wireless communication networks face inefficiencies in managing radio resource allocation across multiple hops, particularly in ensuring orthogonality between uplink and downlink transmissions, which can lead to overlapping resource allocations and reduced throughput.
Innovation Solution
Implementing a request/grant scheme where wireless nodes coordinate radio resource allocations using a scheduling algorithm, ensuring that relay points allocate resources not already in use by downstream nodes, and using separate control channels for uplink and downlink requests to maintain orthogonality and increase bandwidth utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional wireless networks manage radio resource allocation across multiple hops, then basic communication is enabled, but resource allocation overlaps occur and throughput is reduced
Solution Approach 1:
The patent implements preliminary action by having the relay point send a scheduling request to the upstream node before actual data transmission occurs. This request includes information about the downlink resources allocated to the access terminal, allowing the upstream node to pre-coordinate resource allocation and prevent overlaps before they occur, thereby maintaining orthogonality and improving throughput
2Speed
If relay points allocate radio resources independently, then resource allocation speed is improved, but orthogonality with downstream nodes is compromised
Solution Approach 1:
The patent implements feedback by having the relay point send scheduling requests to the upstream node that include information about downlink resource allocations. This feedback mechanism allows the upstream node to adjust uplink resource allocations based on downlink conditions, ensuring orthogonality is maintained while enabling rapid resource allocation through coordinated decision-making
Data Source
AI summary
Apparatus and method for supporting wireless downlink and uplink connections. In the downlink direction, an apparatus receives from the downlink node a request to communicate using an allocation of radio resources specified by the downlink node, and transmits to the downlink node a grant to communicate using at least a portion of the specified allocation of radio resources. In the uplink direction, the apparatus sends a request to a downlink node to communicate using a specified allocation of radio resources, and receives from the downlink node a grant to communicate using at least a portion of the specified allocation of radio resources.