P2P Authorization via Non-Access Stratum Signaling

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Solution Overview

Problem

In cellular wireless communication systems, there is a need to efficiently manage peer-to-peer (P2P) communication authorization to minimize interference between cellular and P2P wireless signaling, as existing systems do not effectively coordinate P2P and cellular signaling in overlapping areas.

Innovation Solution

The implementation of methods for P2P authorization, including receiving a P2P authorization accept message via a non-access stratum (NAS), sending a radio resource control (RRC) P2P configuration request, and transmitting P2P configuration complete messages, which allow mobile entities to operate in P2P mode with other mobile entities, while ensuring compatibility with cellular communication protocols.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If P2P communication is implemented in cellular wireless communication systems, then direct wireless connection between mobile entities is enabled, but interference between P2P and cellular signaling increases

Engineering Contradiction:

ImproveP2P communication capabilityVSAvoidinterference between P2P and cellular signaling

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the communication authorization process into distinct phases: cellular network authorization (via MME and eNB) and P2P communication authorization (via direct mobile entity interaction). This segmentation allows separate management of cellular and P2P signaling, reducing interference by ensuring P2P operations only occur after proper cellular network authorization and resource allocation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces the cellular network infrastructure (MME, eNB) as an intermediary that mediates between mobile entities before P2P communication begins. The network entity authorizes P2P communication and allocates resources, acting as a mediator that coordinates P2P and cellular signaling to minimize interference in overlapping areas.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If direct P2P connection is established between mobile entities, then communication efficiency is improved, but coordination with cellular network infrastructure becomes complex

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidcoordination complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements preliminary authorization actions through the cellular network before direct P2P communication begins. The MME and eNB perform authorization checks and resource allocations in advance, so that when mobile entities establish direct P2P connections, the coordination complexity is already resolved. This preliminary action simplifies the actual P2P communication process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent makes the cellular network infrastructure (MME, eNB) multi-functional by having it perform both traditional cellular communication management and P2P communication authorization. This universal approach allows the same network entities to handle both cellular and P2P signaling, reducing overall system complexity despite the added P2P functionality.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If P2P authorization is managed without standardized procedures, then implementation flexibility is increased, but system reliability decreases

Engineering Contradiction:

Improveimplementation flexibilityVSAvoidauthorization management reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements feedback mechanisms where mobile entities report P2P communication status and network entities provide authorization decisions. This structured feedback loop ensures reliable authorization management by confirming that P2P operations have proper network approval and are operating within allocated resources, while still allowing flexible implementation details.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP2664171B1Systems, methods and computer program product for peer-to-peer authorization via non-access stratum procedures

Publication Date: 2018.05.30 QUALCOMM INC

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AI summary

Peer-to-peer (P2P) authorization by a mobile entity of a wireless communications system may include receiving a P2P authorization accept message from a management entity via a non-access stratum (NAS), receiving a radio resource control (RRC) P2P configuration request from a network entity, and sending an RRC P2P configuration complete message to the network entity via an access stratum. A management entity receiving a P2P authorization request message from a mobile entity may perform a P2P authorization check based on the received P2P authorization request message, and if the mobile entity is authorized, send a P2P authorization accept message to the mobile entity via the NAS. Alternatively, P2P authorization by a mobile entity may include sending a registration message including a P2P authorization request to a core network, and receiving a registration accept message from the core network that includes an initial context setup request and a P2P authorization response.