Prioritizing Relay-Capable Devices for CoMP Scheduling
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Solution Overview
Problem
In wireless networks, Relay Nodes (RNs) face limitations in providing high Quality of Service (QoS) due to constrained backhaul capacity and resource allocation techniques, leading to reduced channel capacity and QoS degradation, especially at cell-edges and hotspots, where Coordinated Multipoint (CoMP) schemes often prioritize non-RN users over RNs.
Innovation Solution
The system dynamically selects relay-capable wireless devices to function as RNs, prioritizing them for CoMP treatment based on their relay status, thereby enhancing the overall QoS by coordinating scheduling and resource allocation between access nodes and RNs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CoMP schemes prioritize non-RN users at cell-edges, then channel quality and QoS for non-RN users are improved, but the ability of RNs to effectively service end-users is limited
Solution Approach 1:
The patent changes the prioritization parameter from user type (non-RN vs RN) to relay status (relay-capable vs non-relay-capable). This parameter change allows the system to dynamically adjust CoMP treatment based on whether a device can function as a relay, thereby improving overall network productivity while maintaining QoS for edge users through intelligent resource allocation.
Solution Approach 2:
The patent implements dynamic selection of relay-capable devices from among connected wireless devices. This dynamic approach allows the system to adaptively identify and prioritize devices that can serve dual purposes (as both end-users and relays), resolving the contradiction by making CoMP prioritization flexible rather than static, thus improving both edge user QoS and RN service capability.
2Area of stationary object
If RNs are used to boost spatial coverage and cell-edge capacity, then coverage and capacity are improved, but backhaul capacity constraints and resource allocation limitations reduce the ability of RNs to effectively service end-users
Solution Approach 1:
The patent enables relay-capable wireless devices to serve themselves and other devices by functioning as RNs. This self-service mechanism allows selected end-user devices to provide relay functionality, thereby expanding coverage and improving service effectiveness without additional backhaul infrastructure, as the relay function is distributed to capable devices rather than centralized in traditional RNs.
Solution Approach 2:
The patent makes wireless devices universal by enabling them to perform multiple functions: they can operate as end-users, relay nodes, or both simultaneously. This multi-functionality allows devices to adapt their role based on network conditions and capabilities, thereby improving service effectiveness and coverage while bypassing backhaul constraints through intelligent resource allocation.
3Reliability
If relay-capable wireless devices are dynamically selected and prioritized for CoMP, then overall QoS of the wireless network is improved, but scheduling coordination complexity between access nodes and RNs increases
Solution Approach 1:
The patent simplifies scheduling coordination by changing the prioritization parameter from multiple factors (user type, location, traffic type) to a single binary parameter (relay-capable status). This parameter simplification reduces the complexity of scheduling decisions while maintaining high QoS, as the system only needs to identify and prioritize devices with relay capability rather than evaluating multiple competing factors.
Data Source
AI summary
Systems and methods are described for coordinating transmissions from a multiple access nodes in a communication network. A relay-capable status of wireless devices connected to an access node may be determined. Relay capable wireless devices are dynamically selected from the connected wireless devices for assignment of coordinated transmissions from an access node. Scheduling between the selected relay capable wireless devices and the access node is conducted.