Combined Frame for M2M and Broadband Communication

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Solution Overview

Problem

Communication devices face challenges in providing both broadband and machine-to-machine (M2M) services over whitespace networks due to incompatible frame durations, which result in interference and power consumption issues, especially in rural areas where connectivity is limited.

Innovation Solution

A communication device that combines both protocols by imposing shorter frames of one protocol onto longer frames of another, allowing for a single carrier transmission and efficient data transfer, while ensuring terminals can synchronize effectively even with poor signal quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate carriers are used for broadband and M2M communications, then interference between protocols is reduced, but device complexity and spectrum requirements increase

Engineering Contradiction:

Improvecommunication reliabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges broadband and M2M communications onto a single carrier by combining their frame structures. The broadband frame (50ms) and M2M frame (2s) are synchronized such that M2M frames are formed by concatenating multiple broadband frames, allowing both protocols to coexist on the same frequency resource without requiring separate carriers, thereby reducing device complexity and spectrum requirements while maintaining communication reliability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single carrier is designed to serve dual functions: supporting both broadband communications with 50ms frame duration and M2M communications with 2s frame duration. The frame structure is made universal by allowing dynamic allocation of time resources within the 2s M2M frame to accommodate either broadband or M2M traffic, making the system multi-functional without requiring protocol-specific carriers

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Use of energy by moving object

If M2M frame duration is extended to 2 seconds for power efficiency, then terminal power consumption is reduced, but broadband latency increases

Engineering Contradiction:

Improveterminal power consumptionVSAvoidbroadband latency

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The 2-second M2M frame is segmented into multiple 50ms broadband frame intervals. Within this segmented structure, the first 50ms interval carries broadband control information for rapid access, while subsequent intervals can be allocated to M2M data transmission. This segmentation allows broadband traffic to achieve low latency in the initial interval while M2M traffic utilizes the remaining time for power-efficient transmission

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system employs periodic frame structures where every 2 seconds, a complete M2M frame is transmitted. Within each period, the first 50ms is dedicated to broadband control signals, and the remaining time is allocated to M2M data. This periodic alternation ensures that broadband terminals experience acceptable latency while M2M terminals benefit from the extended frame duration for power savings

Inventive Principle:

Principle #19Periodic action

3Loss of time

If broadband frame duration is reduced to 50 ms for low latency, then broadband performance is improved, but M2M power efficiency deteriorates

Engineering Contradiction:

Improvebroadband latencyVSAvoidterminal power consumption

Core Design Contradiction:

Loss of timeVSUse of energy by moving object

Solution Approach 1:

The patent combines multiple 50ms broadband frames into a single 2s M2M frame structure. M2M terminals can sleep through the intermediate broadband frames and only wake up to receive control information at the beginning of each 2s M2M frame, thereby maintaining power efficiency despite the underlying broadband frame structure being 50ms. This merging allows the system to present different frame durations to different protocol types simultaneously

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS9544816B2Combined frame of two communication protocols on same carrier for machine-to-machine and for broadband communication

Publication Date: 2017.01.10 HONOR DEVICE CO LTD

AI summary

A communication device configured to communicate with a plurality of terminals via a first communication protocol and a second communication protocol, wherein both protocols organize communications into a series of frames and the frames of the first protocol are shorter than those of the second protocol, the communication device being configured to impose one or more frames according to the first protocol onto at least part of a frame according to the second protocol to form a single frame for communicating via both protocols.