Synchronization Schedule Method for MBMS Data Burst Alignment
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Solution Overview
Problem
Current multimedia broadcast multicast service (MBMS) scheduling methods result in loss of service data and impaired reception quality due to discontinuous and uneven distribution of radio interface resources during Time Division Multiplex (TDM) configuration, leading to incorrect scheduling and potential overflow.
Innovation Solution
A synchronization scheduling method where the upper network element sets the scheduling period as an integer multiple of the TDM period, ensuring that the time stamp difference between adjacent data bursts aligns with the TDM period, and the TDM period is configured to be an integer multiple of the system frame number period, ensuring consistent resource distribution and accurate mapping of data bursts to available transmission times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the upper network element marks time stamps according to receiving moments of data packets with a specific time interval (synchronization sequence length), then data packets can be grouped into data bursts for efficient transmission, but the scheduling period becomes misaligned with the TDM period causing discontinuous and uneven resource distribution
Solution Approach 1:
The patent changes the parameter of scheduling period from being based on packet receiving moments to being an integer multiple of the TDM period. This parameter change ensures that the scheduling period aligns with the TDM resource allocation cycles, making the scheduling period = N × TDM period (where N is a positive integer), thereby ensuring continuous and uniform resource distribution across all TDM periods.
Solution Approach 2:
The patent establishes a periodic scheduling mechanism where data bursts are transmitted at regular intervals that are integer multiples of the TDM period. This periodic action with period = N × TDM period ensures that resource allocation remains consistent and uniform across all transmission cycles, preventing the discontinuous resource distribution that occurs when scheduling period is not aligned with TDM period.
2Adaptability or versatility
If the scheduling period is not an integer multiple of the TDM period, then flexible scheduling can be implemented, but resource distribution becomes uneven leading to data loss and service overflow
Solution Approach 1:
The patent changes the scheduling period parameter to be an integer multiple of the TDM period (scheduling period = N × TDM period). This parameter constraint ensures that scheduling decisions align with the underlying TDM resource allocation structure, preventing resource distribution unevenness that causes data loss and service overflow, while maintaining sufficient flexibility through the choice of different integer values for N.
3Speed
If the TDM period is not an integer multiple of the system frame number period, then finer time granularity can be achieved, but resource distribution becomes inconsistent causing incorrect scheduling
Solution Approach 1:
The patent changes the TDM period parameter to be an integer multiple of the system frame number period (TDM period = M × system frame number period, where M is a positive integer). This parameter relationship ensures that TDM resource allocation boundaries align with system frame boundaries, maintaining consistent resource distribution across all frames while providing sufficient time granularity through the choice of different integer values for M.
Data Source
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AI summary
The present invention discloses a synchronization scheduling method. The method includes that: sending a plurality of data bursts of a specified service by an upper network element to specified network elements belonging to the upper network element, wherein data packets of the data bursts include time stamp information so that the specified network elements send the data bursts according to the time stamp information; and setting difference between the time stamp information of every two adjacent data bursts by the upper network element to be an integer multiple of the TDM period of the specified service, wherein length of the TDM period is one of exactly divided parts of a system frame number period of a radio interface.