eNB PMCH Configuration for MCCH Transmission Without Dedicated Channel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the eMBMS service, data transmission of the MCCH is hindered when the PMCH carrying the MCCH is not present, due to protocol constraints and lack of MBMS sessions, leading to incomplete scheduling information and inability to transmit MCCH data.
Innovation Solution
The eNB transmits a system information block message and configures a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) area configuration message, indicating the presence of PMCHs without MCCH, allowing normal data transmission by using an MCCH default transmission mechanism, where one PMCH carries zero MBMS sessions, ensuring data scheduling and transmission continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PMCH carrying the MCCH is not present on the eNB side, then the data transmission of the PMCH is stopped, but the data of the MCCH cannot be transmitted
Solution Approach 1:
The patent segments the PMCH into multiple instances: one PMCH is dedicated to carrying MCCH data while other PMCHs carry MBMS session data. This segmentation allows the MCCH transmission function to be separated from the MBMS data transmission function, enabling MCCH data to be transmitted even when MBMS sessions are not active.
Solution Approach 2:
The patent makes the PMCH universal by enabling it to serve multiple functions: it can carry MCCH control data, MBMS session data, or both simultaneously depending on configuration. The PMCH structure is designed to be flexible, allowing it to adapt to different service requirements while maintaining reliable control channel transmission.
2Loss of information
If the PMCH carrying the MCCH is not present, then spectrum resources are not utilized for MBMS sessions, but the MCCH scheduling information becomes incomplete
Solution Approach 1:
The patent adds a dimensional distinction by creating separate PMCH instances with different roles: one dimension is dedicated to control information (MCCH) while another dimension handles user data (MBMS sessions). This dimensional separation ensures that control information completeness is not compromised by the absence of MBMS sessions.
3Adaptability or versatility
If additional PMCHs are configured to carry zero MBMS sessions, then protocol specifications are adhered to and resource utilization is optimized, but the system complexity increases
Solution Approach 1:
The patent changes the parameter configuration of PMCH by setting the number of MBMS sessions to zero for specific PMCH instances while maintaining the structural framework. This parameter adjustment allows the system to comply with protocol specifications and optimize resource allocation without fundamentally altering the system architecture.
Data Source
AI summary
The disclosure discloses a data transmission method, wherein the method includes that: a base station (eNB) transmits a system information block message upon confirming that a Physical Multicast Channel (PMCH) carrying a Multicast Control Channel (MCCH) is not present; configures a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) area configuration message according to the system information block message; performs data scheduling according to the configuration of the system information block message or of the MBSFN area configuration message; and transmits the MBSFN area configuration message. The disclosure further discloses two other data transmission methods, a base station, user equipment, a multicell-multicast coordination entity, and a storage medium at the same time.