MBSFN Subframe Purpose Notification for LTE Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In communication technologies, User Equipment (UE) faces challenges in correctly demodulating and processing MBSFN subframes when their purpose is unknown, leading to communication failures, especially with the evolution of technologies where MBSFN subframes are used for various purposes beyond traditional MBSFN transmission.
Innovation Solution
A method and equipment that notify the purpose of an MBSFN subframe through a broadcast message, allowing the UE to determine the correct processing mode for the subframe, improving communication reliability by sending a broadcast message with indication information and a radio frame containing the MBSFN subframe, enabling proper demodulation and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MBSFN subframes are used for various new technologies beyond traditional MBSFN transmission, then the adaptability and versatility of the communication system is improved, but the UE cannot correctly demodulate or process the data because it does not know the true purpose of the MBSFN subframe, leading to communication failure
Solution Approach 1:
The base station sends indication information to the UE in advance (in the SIB1 broadcast message) to notify the UE of the purpose of each MBSFN subframe before the UE needs to process the data in those subframes. This preliminary notification allows the UE to prepare the correct processing mode ahead of time, ensuring reliable communication while supporting multiple purposes for MBSFN subframes.
Solution Approach 2:
The patent introduces an intermediary mechanism (indication information field in SIB1) that mediates between the base station's intent to use MBSFN subframes for various purposes and the UE's need to correctly process those subframes. This intermediary carries the purpose information from the base station to the UE, enabling the UE to adapt its processing mode accordingly without knowing the internal decisions of the base station.
2Ease of operation
If the UE defaults to treating MBSFN subframes as MBSFN transmission, then the system maintains backward compatibility and simple operation, but the UE cannot correctly process data when MBSFN subframes are used for other purposes
Solution Approach 1:
The UE autonomously determines its processing mode for MBSFN subframes by reading the indication information in the SIB1 broadcast message and autonomously selecting the appropriate processing mode based on the notified purpose. This self-service approach eliminates the need for complex default assumptions while ensuring correct processing, as the UE independently adapts to the actual purpose of each MBSFN subframe.
3Reliability
If indication information for MBSFN subframe purpose is added to broadcast messages, then the UE can correctly determine processing modes, but the broadcast message structure and system complexity increase
Solution Approach 1:
The patent reuses the existing SIB1 broadcast message structure to carry the indication information for MBSFN subframe purposes, rather than creating a separate dedicated message. This multi-functional use of the existing broadcast infrastructure minimizes additional system complexity while achieving the goal of reliable MBSFN subframe processing. The same broadcast mechanism serves both traditional system information delivery and the new purpose indication function.
Data Source
AI summary
A method and an equipment for notifying a purpose of a subframe, and a method and an equipment for processing a subframe are disclosed. The method includes: sending a broadcast message to a user equipment (UE), where the broadcast message carries indication information indicating a purpose of a Multicast Broadcast Single Frequency Network (MBSFN) subframe; and sending a radio frame to the UE, wherein the radio frame carries the MBSFN subframe which serves the purpose indicated by the indication information. The technical solutions of the present invention enable the UE to be notified of the true purpose of the MBSFN subframe, and improve communication reliability.