RRC Message Compression for Machine Type Communication Overhead

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Solution Overview

Problem

Machine type communications, which involve small data transmissions, experience increased signaling overhead due to numerous control signaling messages, leading to degraded system throughput and reduced resource efficiency.

Innovation Solution

Implementing a method where user equipment (UE) and base stations employ compression and decompression units within the Radio Resource Control (RRC) layer to compress and decompress RRC layer messages, reducing the need for excessive signaling and optimizing resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If machine type communications devices send multiple control signaling messages to establish connection before data transmission, then connection reliability is improved, but signaling overhead increases and resource efficiency deteriorates

Engineering Contradiction:

Improveconnection reliabilityVSAvoidresource efficiency

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent extracts and removes redundant signaling messages from the communication protocol. Specifically, it eliminates the need for multiple RRC connection setup messages (RRCConnectionRequest, RRCConnectionSetup, RRCConnectionSetupComplete) by implementing direct data transmission without traditional connection establishment, thereby reducing signaling overhead while maintaining connection reliability through alternative mechanisms

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary configuration and context setup before actual data transmission. The network pre-configures resource allocation, QoS parameters, and security contexts, so that when data transmission is initiated, no additional signaling is needed to establish connection parameters, thus eliminating the need for multiple control messages

Inventive Principle:

Principle #10Preliminary action

2Reliability

If multiple control signaling messages are exchanged before data transmission, then connection establishment reliability is improved, but system throughput deteriorates due to increased signaling overhead

Engineering Contradiction:

Improveconnection establishment reliabilityVSAvoidsystem throughput

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent removes the traditional multi-step RRC connection establishment procedure from the data transmission path. By extracting these signaling messages (RRCConnectionRequest, RRCConnectionSetup, RRCConnectionSetupComplete) and replacing them with a simplified direct transmission mechanism, the patent reduces signaling overhead and increases system throughput while maintaining connection reliability through pre-configuration and alternative handshaking protocols

Inventive Principle:

Principle #2Taking out (Extraction)

3Manufacturing precision

If control signaling messages take significant resources for small size data transmission, then connection control precision is improved, but resource efficiency deteriorates

Engineering Contradiction:

Improveconnection control precisionVSAvoidresource efficiency

Core Design Contradiction:

Manufacturing precisionVSLoss of energy

Solution Approach 1:

The patent applies partial action by implementing connection control only when absolutely necessary. Instead of performing full RRC connection establishment with multiple signaling messages for every small data transmission, the patent uses pre-established contexts and simplified transmission protocols, applying control mechanisms only partially (when needed) rather than excessively (for every transmission), thus improving resource efficiency while maintaining necessary connection control precision

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent extracts and removes unnecessary control signaling messages from the small data transmission process. By eliminating messages like RRCConnectionRequest, RRCConnectionSetup, and RRCConnectionSetupComplete that are excessive for small data packets, the patent reduces resource consumption while maintaining connection control precision through alternative lightweight mechanisms

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS9497662B2Methods and devices for reducing signaling overhead

Publication Date: 2016.11.15 APPLE INC

AI summary

A method for reducing signaling overhead in user equipment (UE) connected to a base station is provided. The method includes: when the UE sends Radio Resource Control (RRC) layer messages to the base station, the UE compresses RRC layer messages and sends the compressed RRC layer messages to the base station; and when the UE receives the compressed RRC layer messages from the base station, the UE decompresses the compressed RRC layer messages received from the base station.