P2P Communication on Unlicensed Spectrum via Network Assistance
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently supporting peer-to-peer (P2P) communication on unlicensed spectra, as they often share the same licensed spectrum with WAN communication, leading to degraded effectiveness and capacity due to resource competition.
Innovation Solution
The techniques involve establishing and maintaining P2P communication on unlicensed spectra using network assistance, where UEs communicate with a WAN to obtain unlicensed frequency channels for P2P communication, and base stations cooperate to assign and manage these channels, ensuring minimal interference with licensed users and optimizing channel selection based on sensing and geolocation data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If P2P communication uses licensed spectrum shared with WAN communication, then network coverage and reliability are improved, but network capacity and effectiveness are degraded due to resource competition
Solution Approach 1:
The patent segments the communication spectrum into licensed and unlicensed portions, assigning different functions to each. Licensed spectrum is dedicated to WAN communication for reliability, while unlicensed spectrum is allocated to P2P communication for high capacity, eliminating resource competition between the two communication types.
Solution Approach 2:
The patent introduces a new dimension (unlicensed spectrum) for P2P communication rather than competing for resources in the existing licensed spectrum dimension. This dimensional expansion allows P2P traffic to utilize additional frequency resources without interfering with WAN communication.
2Productivity
If P2P communication is established on unlicensed spectrum without network assistance, then network capacity is improved, but communication reliability and interference management are degraded
Solution Approach 1:
The network acts as an intermediary between P2P communicating devices, providing coordination services including channel assignment, interference management, and communication maintenance. This mediator role ensures that unlicensed spectrum P2P communication achieves both high capacity and reliable operation through centralized control.
Solution Approach 2:
The patent implements feedback mechanisms where the network continuously monitors P2P communication quality on unlicensed channels and dynamically adjusts resource allocation, channel assignments, and interference management strategies to maintain communication reliability while maximizing network capacity.
3Productivity
If multiple UEs share the same unlicensed frequency channel, then network capacity is improved, but interference and communication quality are degraded
Solution Approach 1:
The patent applies local quality by assigning different unlicensed frequency channels to different geographic locations or cell areas. This spatial differentiation allows multiple UEs to simultaneously utilize unlicensed spectrum for P2P communication in different locations without causing mutual interference, thereby scaling network capacity while maintaining communication quality.
Data Source
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AI summary
Techniques for establishing and maintaining peer-to-peer (P2P) communication are described. In an aspect, P2P communication on an unlicensed spectrum may be established and maintained with network assistance. In one design, a user equipment (UE) may communicate with a wide area network (WAN) to establish P2P communication with at least one other UE on a first frequency band that is not licensed to the WAN. For example, the UE may receive an assignment of at least one frequency channel in the first frequency band for P2P communication. The UE may then communicate peer-to-peer with the other UE(s) on the at least one frequency channel. The UE may also communicate with the WAN to maintain P2P communication with the other UE(s), e.g., to switch to another frequency channel if necessary.