Dynamic Bit Rate Allocation for MBMS Services
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Solution Overview
Problem
Current eMBMS specifications require constant bit rates for broadcast-multicast services, leading to inefficient resource allocation and suboptimal quality of service due to fixed bandwidth allocation, which does not accommodate the variable bit rate nature of content like video signals.
Innovation Solution
A method for dynamically allocating variable bandwidth for each MBMS service by requesting adjusted bit rates from the BM-SC and MCE, allowing for real-time adjustments based on network resource availability and content requirements, enabling more efficient use of resources and improved quality of service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If constant bit rate is used for MBMS service, then resource allocation is simplified and guaranteed, but resource utilization efficiency deteriorates and quality of service cannot be optimized
Solution Approach 1:
The patent implements dynamic bit rate adjustment by introducing a feedback mechanism where the network node monitors resource availability and sends adjustment indications to the broadcast-multicast service center, which then modifies the bit rate accordingly. This transforms the static constant bit rate into a dynamic parameter that adapts to network conditions, resolving the contradiction between guaranteed service and efficient resource utilization.
Solution Approach 2:
The patent changes the bit rate parameter from a fixed value to a variable value based on network resource availability. The broadcast-multicast service center receives adjustment indications and modifies the bit rate parameter dynamically, allowing the system to maintain reliability when resources are abundant while improving productivity when resources are constrained.
2Stability of the object's composition
If fixed bandwidth allocation is used for each MBMS service, then QoS parameters remain stable, but adaptability to variable content requirements deteriorates
Solution Approach 1:
The patent makes the bandwidth allocation dynamic by introducing a feedback loop where the network node monitors resource availability and triggers bit rate adjustments. This allows QoS parameters to remain stable during normal operation while adapting to variable content requirements when resource conditions change, resolving the contradiction between stability and adaptability.
Solution Approach 2:
The patent implements a feedback mechanism where the network node monitors resource availability and sends adjustment indications to the broadcast-multicast service center. This feedback loop enables the system to maintain stable QoS parameters while adapting to varying content requirements by adjusting the bit rate based on actual network conditions.
3Reliability
If maximum bit rate is allocated to accommodate peak content requirements, then quality of service is maintained during high demand, but resource waste increases during low demand periods
Solution Approach 1:
The patent implements dynamic bit rate adjustment that allows the system to allocate maximum bit rate when needed for quality of service while reducing the bit rate during low demand periods to eliminate resource waste. The feedback mechanism monitors resource availability and adjusts the bit rate accordingly, resolving the contradiction between maintaining quality and reducing waste.
Solution Approach 2:
The patent changes the bit rate parameter dynamically based on actual content requirements and resource availability. Instead of allocating maximum bit rate continuously, the system adjusts the parameter to match actual demand, maintaining quality of service when needed while reducing resource waste during low demand periods.
Data Source
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AI summary
A method, an apparatus, and a computer program product for wireless communication are provided in which at least one bit rate for allocating network resources from a broadcast-multicast service center (BM-SC) is received. The network resources are then allocated based on the at least one bit rate. Moreover, all evolved Node Bs (eNBs) in a broadcast/multicast area are informed of the network resource allocation. Additionally, the network resources are allocated for a session based on a first bit rate, wherein the first bit rate is greater than a guaranteed bit rate (GBR), and the network resource allocation is adjusted to a second bit rate based on the occurrence of an event, wherein the second bit rate is equal to GBR.