MBSFN Sub-frame Resource Allocation for LTE MBMS Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In LTE networks, User Equipment (UE) may not correctly receive Multimedia Broadcast Multicast Services (MBMS) when the Multimedia Broadcast Multicast Service (MBMS) sub-frame resource allocation exceeds the Common Sub-frame Period (CSP), leading to incorrect allocation of MBSFN sub-frame resources for each MCH and MBMS, resulting in failed service acquisition.
Innovation Solution
The proposed solution involves determining and notifying the UE of the allocation manner for MBSFN sub-frame resources to each MCH and MBMS within the MCH, even when the Multimedia Broadcast Multicast Service (MBMS) sub-frame resource allocation exceeds the CSP, ensuring correct resource allocation and scheduling by employing distributed or continuous resource allocation strategies, and indicating sub-frame resources in the Multicast Channel (MCH) Scheduling Information (MSI).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the MBMS sub-frame resource allocation exceeds the Common Sub-frame Period (CSP), then more MBMS services can be supported, but the UE cannot correctly receive the MBMS services due to allocation confusion
Solution Approach 1:
The patent segments the MBMS sub-frame resource allocation by introducing a new parameter 'mbsfn-SubframeAllocation' that divides the allocation into multiple parts. When the total allocation exceeds the CSP, the system splits the allocation across different CSP boundaries, with each segment being independently managed and indicated to the UE through separate signaling, thus preventing allocation confusion while supporting larger total allocations
Solution Approach 2:
The patent adds a temporal dimension to the resource allocation by introducing the concept of multiple CSP periods. Instead of allocating all sub-frames within a single CSP period, the system extends the allocation across multiple CSP periods, using the time dimension to resolve the conflict between supporting large allocations and maintaining UE reception accuracy within each period
2Adaptability or versatility
If the MCH Scheduling Period (MSP) is extended beyond the CSP, then more scheduling flexibility is achieved, but the resource allocation management becomes complex
Solution Approach 1:
The patent applies preliminary action by pre-configuring the relationship between MSP and CSP parameters through higher-layer signaling before actual resource allocation occurs. The system pre-establishes the mapping rules and allocation patterns, so that when MSP exceeds CSP, the UE already has the necessary information to correctly interpret the allocation without real-time complex calculations, thus reducing management complexity
Solution Approach 2:
The patent introduces an intermediary parameter 'mbsfn-SubframeAllocation' that mediates between the MSP and CSP time periods. This intermediary acts as a bridge, translating the extended MSP allocation into UE-comprehensible segments that align with CSP boundaries, thereby simplifying the management complexity while preserving scheduling flexibility
Data Source
Figure 1~2
Figure 3~4b
Figure 5a~5b
AI summary
Provided are methods and devices for allocating and processing sub-frame resources. In the methods, under the condition that a Multicast Channel (MCH) Scheduling Period (MSP) exceeds a Common Sub-frame allocation Period (CSP), an allocation manner for allocating Multicast Broadcast over Single Frequency Network (MBSFN) sub-frame resources to each MCH and a Multimedia Broadcast Multicast Service (MBMS) in the MCH is determined; and the allocation manner is notified to User Equipment (UE). According to the technical solutions provided above, under the condition that the MSP exceeds the CSP, MBMS resource scheduling may be implemented, the UE may be ensured to correctly receive a required MBMS, and user experiences may be improved.