Wireless Ad Hoc Network Service Cluster Synchronization

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Solution Overview

Problem

In wireless ad hoc networks, different service clusters with distinct schedules cannot directly communicate, leading to power consumption and service interruptions due to devices waking up at different time slots, causing issues with service delivery between service providers and subscribers that are far apart.

Innovation Solution

A method and device for establishing a third service cluster with a coordinated schedule for data transmission and reception, allowing communication devices to receive service publish and subscribe messages from different clusters and merge them into a single cluster with a unified wake-up time slot, enabling direct communication and reducing power consumption by transmitting service frames only once.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If devices in different service clusters operate with distinct schedules, then each cluster can independently manage its own communication timing, but service delivery between distant providers and subscribers is interrupted and power consumption increases

Engineering Contradiction:
Improveservice deliveryVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent merges multiple service clusters with different schedules into a unified cluster structure. A gateway device coordinates between clusters by translating and forwarding service frames, allowing service providers and subscribers in different original clusters to communicate reliably without maintaining separate schedules, thus improving service delivery while reducing redundant transmissions and power consumption

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The gateway device acts as an intermediary between service clusters with different schedules. It receives service frames from providers in one cluster, translates timing and addressing information, and forwards them to subscribers in another cluster, enabling reliable cross-cluster service delivery without requiring all devices to adopt a single unified schedule immediately

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If service frames are transmitted to multiple clusters separately, then each cluster receives the data, but the transmitting device consumes more power due to multiple wake-up events

Engineering Contradiction:
Improvedata delivery coverageVSAvoidpower consumption
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent combines multiple cluster scheduling operations into a single transmission event at the gateway. The gateway consolidates service frames destined for multiple clusters and transmits them in coordinated time slots, allowing the source device to wake up only once while still delivering data to multiple clusters through the gateway's unified scheduling mechanism

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The gateway device performs preliminary actions by pre-coordinating schedules and pre-positioning service frames in its buffer before actual transmission. It prepares translated addressing information and timing schedules in advance, allowing source devices to transmit once while the gateway handles the complex multi-cluster distribution efficiently

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If devices wake up at different time slots for different clusters, then cluster-specific scheduling is maintained, but direct communication between distant service providers and subscribers is blocked

Engineering Contradiction:
Improvecluster scheduling flexibilityVSAvoidcommunication connectivity
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The gateway serves as an intermediary that bridges clusters with different schedules. It maintains the scheduling flexibility of individual clusters while providing translation and forwarding services that enable distant service providers and subscribers to communicate reliably, effectively decoupling cluster-specific scheduling from end-to-end communication reliability

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The gateway device performs multiple functions: it maintains cluster schedule independence, translates addressing information between clusters, coordinates transmission timing, and enables cross-cluster service delivery. This multi-functionality allows the system to preserve cluster scheduling flexibility while achieving universal communication connectivity across all clusters

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10264513B2Method of data communication in wireless ad hoc network
Publication Date: 2019.04.16 MEDIATEK INC
  • US10264513B2 patent drawing
  • US10264513B2 patent drawing
  • US10264513B2 patent drawing

AI summary

A method of data communication for a communication device in a wireless ad hoc network is disclosed. The method comprises receiving a service publish message and a service subscribe message from a first communication device of a first service cluster and a second communication device of a second service cluster respectively, wherein the second communication device subscribes a service from the first communication device, and establishing a third service cluster including the first communication device and the second communication device, wherein a schedule of the third service cluster for the communication device, the first and second communication devices of the third service cluster to wake up for data transmission and reception is determined by the communication device or coordinated by the communication device, the first and the second communication devices.