MUMAAP Protocol for Dynamic MAC Address Allocation

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Solution Overview

Problem

Current layer 2 protocols, such as IEEE 1722 MAC address acquisition protocol, do not support the allocation of MAC addresses to end stations without prior configuration, which is a requirement for IEEE 802.1CQ standards for unicast and multicast MAC address assignment in IEEE 802 networks.

Innovation Solution

The proposed Multicast and Unicast MAC Address Assignment Protocol (MUMAAP) allows for the discovery, offer, request, and allocation of MAC addresses between nodes in a network, enabling self-assignment or server-based allocation of unicast and multicast MAC addresses without prior configuration, using a set of defined messages and state machines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If current layer 2 protocols (e.g., IEEE 1722) are used for MAC address allocation, then prior configuration and allocation are required, but this increases device complexity and prevents dynamic address assignment

Engineering Contradiction:
ImproveMAC address allocation flexibilityVSAvoidprior configuration requirement
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements self-service through the MUMAAP protocol where end stations autonomously discover available MAC addresses and negotiate allocation with network infrastructure without requiring manual prior configuration. The protocol enables devices to automatically register, discover, and allocate MAC addresses through standardized message exchanges, eliminating the need for pre-configuration while maintaining organized address management.

Inventive Principle:
Principle #25Self-service

2Productivity

If prior MAC address configuration is required, then address allocation reliability is improved, but allocation speed and ease of operation deteriorate

Engineering Contradiction:
Improveaddress allocation speedVSAvoidaddress allocation reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-defining MAC address pools and allocation rules in the network infrastructure before actual address assignment occurs. The system prepares available address ranges, validates allocation policies, and establishes the MUMAAP protocol framework in advance, enabling rapid and reliable address allocation when end stations request addresses without manual configuration delays.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If manual MAC address configuration is used, then address assignment reliability is improved, but ease of operation and automation level worsen

Engineering Contradiction:
ImproveMAC address assignment simplicityVSAvoidself-assignment capability
Core Design Contradiction:
Ease of operationVSExtent of automation

Solution Approach 1:

The MUMAAP protocol implements self-service by enabling end stations to automatically perform MAC address discovery, selection, and allocation through standardized protocol messages. The system autonomously manages the entire address assignment process including registering with network infrastructure, discovering available addresses, negotiating allocation, and confirming assignment without human intervention, thereby maximizing automation while maintaining operational simplicity.

Inventive Principle:
Principle #25Self-service

4Reliability

If no prior MAC address allocation is performed, then allocation speed is improved, but address conflict and reliability worsen

Engineering Contradiction:
Improveaddress conflict preventionVSAvoidallocation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent implements feedback mechanisms through the MUMAAP protocol where end stations send discovery messages to network infrastructure, receive responses about available MAC addresses, and adjust their selections based on network feedback. The protocol includes confirmation and registration steps that provide feedback loops to ensure address uniqueness and prevent conflicts, maintaining reliability while enabling rapid dynamic allocation without manual configuration delays.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11792154B2Multicast and unicast medium access control (MAC) address assignment protocol (MUMAAP)
Publication Date: 2023.10.17 INTERDIGITAL PATENT HOLDINGS INC
  • US11792154B2 patent drawing
  • US11792154B2 patent drawing
  • US11792154B2 patent drawing

AI summary

Methods and apparatuses are described herein for multicast and unicast MAC address assignment protocol (MUMAAP). A first node may transmit, to a second node, based on a unicast MAC address of the second node or a multicast MAC address associated with the second node, a discover message that may include a first MAC address or a first range of MAC addresses. The first node may receive an offer message with a second range of MAC addresses. If the first node selects a second MAC address from the received second range of MAC addresses, the first node may transmit a request message indicating that the second MAC address or the second range of MAC addresses is allocated to the first node. The first node may receive an acknowledge message indicating that the second MAC address or the second range of MAC addresses is allocated to the first node.