Network-Controlled P2P Interference Coordination
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently coordinating interference between peer-to-peer (P2P) communication and wide area network (WAN) communication, particularly in co-channel deployments where P2P transmissions on the same spectrum as WAN communications can cause interference, degrading performance for both P2P and WAN devices.
Innovation Solution
Implementing a network-controlled architecture that enables P2P devices to detect other devices, measure pathloss and interference, and report these measurements to the WAN, allowing base stations to perform resource partitioning and association decisions to allocate resources for P2P communication, thereby mitigating interference and optimizing communication modes between P2P and WAN devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If P2P devices transmit on the same spectrum as WAN communications (co-channel deployment), then network capacity and user capacity are improved, but interference between P2P and WAN devices increases, degrading performance for both communication modes
Solution Approach 1:
The patent segments the available spectrum resources by allocating specific frequency bands, time slots, or resource blocks exclusively for P2P communication and others for WAN communication. This resource partitioning prevents simultaneous transmissions on the same channel, eliminating interference while maintaining the benefits of co-channel deployment for network capacity enhancement.
Solution Approach 2:
The patent implements dynamic resource allocation where the network controller continuously monitors interference conditions and adjusts the allocation of time-frequency resources between P2P and WAN communications in real-time. When interference is detected, the system dynamically reconfigures resource assignments to mitigate the harmful effects while preserving overall network productivity.
2Ease of operation
If P2P communication is allowed without network control, then device autonomy and communication efficiency are improved, but interference coordination with WAN devices becomes difficult, degrading overall network performance
Solution Approach 1:
The patent introduces a network controller as an intermediary that coordinates between P2P devices and WAN infrastructure. The controller receives resource requests from autonomous P2P devices, performs interference analysis, and allocates resources in a way that ensures reliable coordination with WAN communications while preserving device autonomy for initiating and managing P2P sessions.
Solution Approach 2:
The patent implements feedback mechanisms where P2P devices report channel conditions and interference measurements to the network controller, which then adjusts resource allocations accordingly. This closed-loop control enables autonomous devices to operate reliably by providing the network with the information needed to make informed interference coordination decisions.
3Productivity
If more resources are allocated for P2P communication, then user capacity and network efficiency are improved, but available resources for WAN communication decrease, potentially degrading WAN performance
Solution Approach 1:
The patent employs dynamic resource allocation where the network controller continuously monitors traffic demands, channel conditions, and interference levels to adjust the split of resources between P2P and WAN communications. This allows the system to maximize user capacity for P2P while ensuring sufficient resources remain available for WAN operations, adapting to changing conditions in real-time.
Solution Approach 2:
The patent changes the allocation parameters (frequency bands, time slots, power levels) dynamically based on network conditions. By adjusting these parameters, the system can optimize the balance between P2P user capacity and WAN resource availability, allocating more resources to P2P when conditions favor it while maintaining adequate WAN performance.
Data Source
AI summary
Techniques for supporting peer-to-peer (P2P) communication in a wide area network (WAN) are disclosed. In an aspect, interference coordination between P2P devices engaged in P2P communication and WAN devices engaged in WAN communication may be performed based on a network-controlled architecture. For the network-controlled architecture, P2P devices may detect other P2P devices and/or WAN devices and may send measurements (e.g., for pathloss, interference, etc.) for the detected devices to the WAN (e.g., serving base stations). The WAN may perform resource partitioning and/or association for the P2P devices based on the measurements. Association may include selection of P2P communication or WAN communication for a given P2P device. Resource partitioning may include allocation of resources to a group of P2P devices for P2P communication. The WAN may send the results of association and/or resource partitioning to the P2P devices, which may communicate in accordance with the association and/or resource partitioning results.