LTE MIB Message Processing for eMTC Coexistence

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Some LTE terminals cannot access the cell normally due to their inability to recognize Master Information Block (MIB) messages, particularly after the eMTC function is enabled in the LTE network, leading to reduced access and degraded user experience.

Innovation Solution

The method involves determining the sending proportion of MIB messages for LTE terminals on subframe #0 based on re-establishment and access information for both LTE and eMTC terminals, setting the schedulingInfoSIB1-BR-r13 field to 0 to mitigate abnormal access issues without affecting eMTC terminals, and adjusting the sending proportion in real-time to optimize network performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the eMTC function is enabled on the LTE network and the schedulingInfoSIB1-BR-r13 information element is added to the MIB message, then eMTC terminal access is improved, but early LTE terminals cannot access the cell normally due to protocol incompatibility

Engineering Contradiction:

ImproveeMTC terminal accessVSAvoidLTE terminal access

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the MIB message into two distinct types: MIB messages for eMTC terminals (containing schedulingInfoSIB1-BR-r13 field) and MIB messages for LTE terminals (with schedulingInfoSIB1-BR-r13 field set to 0). This segmentation allows the base station to send different versions of the MIB message to different terminal types, resolving the compatibility issue between early LTE terminals and eMTC protocol extensions

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by setting the schedulingInfoSIB1-BR-r13 field to 0 specifically in MIB messages intended for LTE terminals, while maintaining the field with actual scheduling information in MIB messages for eMTC terminals. This localized modification ensures that LTE terminals receive compatible information without affecting eMTC terminal access

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If MIB messages with schedulingInfoSIB1-BR-r13 field are sent to all terminals, then eMTC terminal access is enabled, but early LTE terminals perform non-zero check and fail to decode the MIB message

Engineering Contradiction:

ImproveeMTC function enablementVSAvoidMIB message decoding

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent introduces an intermediary mechanism where the base station acts as a mediator that determines terminal type and selects appropriate MIB message versions. The base station includes terminal type determination modules that identify whether a terminal is an early LTE terminal or an eMTC terminal, and accordingly selects whether to include the schedulingInfoSIB1-BR-r13 field or set it to 0, ensuring successful decoding for both terminal types

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the base station sends MIB messages with schedulingInfoSIB1-BR-r13 field set to 0 to LTE terminals, then LTE terminal access is restored, but eMTC terminal access may be affected

Engineering Contradiction:

ImproveLTE terminal accessVSAvoideMTC terminal access

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic MIB message sending mechanism where the base station continuously monitors terminal access status and dynamically adjusts the type of MIB messages sent. The system includes determination modules that adaptively select between sending MIB messages with schedulingInfoSIB1-BR-r13 field set to 0 (for LTE terminals) or with actual scheduling information (for eMTC terminals) based on real-time terminal type identification and access status

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP3989609B1Method for processing a MIB message of LTE system message, base station, and storage medium

Publication Date: 2023.11.22 ZTE CORP

Figure 1~3
Figure 4~6

AI summary

Disclosed herein are a method for processing a master information block (MIB) message of an LTE system message, an apparatus, a base station, and a storage medium. The method for processing an MIB message of an LTE system message comprises: acquiring re-establishment information of an LTE terminal within a cell, access quantity information of the LTE terminal, and access quantity information of an eMTC terminal; according to the re-establishment information of the LTE terminal, the access quantity information of the LTE terminal, and the access quantity information of the eMTC terminal, determining the number of times an MLB message of the LTE terminal is sent on a preset sub-frame.