CIoT Terminal Attach Procedure with MME Negotiation

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Solution Overview

Problem

The existing technologies lack a clear method for connecting Cellular Internet of Things (CIoT) terminals to core networks and procedures for data transmission and reception, which are essential for optimizing communication efficiency and power consumption in indoor or underground environments with a large number of terminals.

Innovation Solution

A terminal apparatus and Mobility Management Entity (MME) that include a transmission and/or reception unit and a control unit, which transmit and receive specific messages during the attach procedure to negotiate the use of Control plane and User plane CIoT EPS Optimisation, enabling efficient data transmission and reception methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If CIoT terminals are connected to core networks using existing methods, then basic connectivity is achieved, but communication efficiency and power consumption are not optimized

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent changes the communication parameters by introducing two optimization modes: Control plane CIoT EPS Optimization and User plane CIoT EPS Optimization. These parameter changes enable the terminal to switch between different communication paths and protocols, improving efficiency while managing power consumption based on the selected optimization mode.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamic capability negotiation during the attach procedure. The terminal and network dynamically exchange capability information and select the appropriate optimization mode based on current conditions, allowing the system to adaptively change communication behavior rather than using a fixed method.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If capability negotiation is added to the attach procedure, then optimized communication paths are enabled, but message complexity increases

Engineering Contradiction:

Improveoptimization mode selectionVSAvoidmessage structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent uses existing attach procedure messages (Attach Request, Attach Accept, Attach Complete) to carry multiple functions. These standard messages are enhanced to include both traditional attach information and CIoT optimization capability information, allowing one message structure to serve multiple purposes without creating entirely new message types.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges capability negotiation with the existing attach procedure. Instead of separating capability exchange into a distinct phase, the capability information is combined with the attach request and response messages, consolidating multiple functions into a unified procedure that reduces overall system complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11290864B2Terminal apparatus, MME, communication method of terminal apparatus, and communication method of MME

Publication Date: 2022.03.29 SHARP KK

AI summary

To provide a communication procedure for data transmission and/or reception suitable to a CIoT terminal. A communication control method of a terminal apparatus according to the present invention includes the steps of: transmitting an Attach Request message to a core network, receiving an Attach Accept message including at least identification information identifying Signalling Radio Bearer (SRB) and identification information identifying Data Radio Bearer (DRB) from the core network; and establishing the SRB and the DRB.