MBMS Dynamic Scheduling via MCCH-Specific MCS
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Solution Overview
Problem
Current MBMS systems face challenges in determining the correct Modulation and Coding Scheme (MCS) for dynamic scheduling information when the Multicast Control Channel (MCCH) is not present in the same sub-frame, leading to incorrect reception of dynamic scheduling information by user equipment (UE).
Innovation Solution
Applying a Multicast Control Channel (MCCH) specific Modulation and Coding Scheme (MCS) for transmitting and receiving the MAC Control Element carrying dynamic scheduling information on the Physical Multicast Channel (PMCH), ensuring correct decoding and reception of dynamic scheduling information, regardless of whether it is transmitted with the MCCH in the same sub-frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic scheduling information is transmitted without MCCH in the same sub-frame, then transmission flexibility is improved, but reception reliability deteriorates due to incorrect MCS determination
Solution Approach 1:
The patent applies preliminary action by pre-configuring the MCS for dynamic scheduling information transmission. The network side determines and applies the MCS in advance for transmitting dynamic scheduling information on PMCH, ensuring that the UE can correctly receive and decode the information even when MCCH is not present in the same sub-frame. This resolves the contradiction by maintaining reception reliability through pre-planned MCS application while allowing transmission flexibility.
2Measurement precision
If MCCH specific MCS is applied for dynamic scheduling information, then reception accuracy is improved, but system complexity increases due to additional MCS management
Solution Approach 1:
The patent applies universality by making the MCCH-specific MCS applicable to multiple purposes: it is used for transmitting both MCCH information and dynamic scheduling information on the PMCH. This multi-functional application of the same MCS configuration improves reception accuracy for dynamic scheduling information while avoiding the need for separate MCS management mechanisms, thereby limiting the increase in system complexity.
Data Source
AI summary
A method for handling MBMS dynamic scheduling information in a network terminal of a wireless communication system is disclosed. The method includes steps of generating an MAC Control Element for carrying an MBMS dynamic scheduling information; and applying an MCCH specific Modulation and Coding Scheme (MCS) for transmitting the MAC Control Element on a corresponding Physical Multicast Channel (PMCH).