MBMS Control Channel Segmentation for Radio Capacity Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for setting up multimedia broadcast/multicast services (MBMS) in UMTS systems are inefficient as they require transmitting system information and control signals through the same channels, leading to increased radio capacity usage and lack of defined processes for setting up MBMS radio bearers.
Innovation Solution
A method where system information for MBMS is transmitted through a broadcast control channel (BCCH) and control information is transmitted through a dedicated MBMS control channel (MCCH), allowing for separate logical channels for system and control information, enabling efficient setup and management of MBMS radio bearers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If system information and control signals for MBMS are transmitted through the same channel (BCCH), then the setup process is simplified, but radio capacity usage increases and efficiency decreases
Solution Approach 1:
The patent segments the transmission channels by creating separate logical channels for system information (BCCH) and control signals (MCCH). This segmentation allows system information to be broadcast once while control signals can be transmitted separately, reducing redundant transmissions and improving radio capacity utilization without complicating the overall setup process.
2Quantity of substance
If system information and control signals are transmitted through separate channels (BCCH and MCCH), then radio capacity usage is reduced, but the setup process becomes more complex
Solution Approach 1:
The patent applies preliminary action by first broadcasting system information through BCCH that includes configuration details for the MCCH. This preliminary transmission of channel configuration information allows terminals to automatically understand how to receive control signals, eliminating the need for complex manual setup procedures despite the separation of channels.
3Productivity
If control signals for MBMS are transmitted through dedicated MBMS control channel (MCCH), then service management efficiency is improved, but channel configuration complexity increases
Solution Approach 1:
The patent makes the MCCH a universal control channel that can serve multiple MBMS services simultaneously. By designing MCCH with multi-functional capabilities to handle different types of control signals for various services, the system achieves improved service management efficiency while avoiding the complexity of creating separate dedicated channels for each service.
Data Source
AI summary
A method for transmitting a control signal for multimedia service data of UMTS (Universal Mobile Telecommunications System) includes MBMS service data that can be transmitted in a wireless system providing various types of MBMS service. An MBMS scheduling block including an MBMS service identifier list and scheduling information of MBMS RB set information and an MBMS service information block including one MBMS service identifier and MBMS RB set information for a corresponding service are transmitted to a terminal group.