Mobile Communication Scheduling Reducing Transmission Delay
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Solution Overview
Problem
The existing scheduling processes in mobile communication systems, particularly in LTE, result in significant delays for data transmission due to the need for multiple signaling steps and resource allocation procedures, which are inadequate for real-time and delay-sensitive data transmission.
Innovation Solution
The method involves pre-mapping specific scheduling request timings to modulation and coding schemes and radio resource allocations between the UE and ENB, allowing for instant resource allocation upon receiving a scheduling request at predetermined times, thereby reducing the need for intermediate signaling steps and minimizing delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If multiple signaling steps and resource allocation procedures are used in the existing scheduling process, then resource allocation can be performed, but transmission delay increases significantly
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple uplink resources in advance before the scheduling request is transmitted. The eNodeB allocates multiple uplink resources (first, second, third resources) ahead of time corresponding to different scheduling request timings. When a scheduling request is received, the eNodeB can immediately determine which pre-configured resource to use without going through additional allocation signaling steps, thereby reducing transmission delay while maintaining proper resource management
2Productivity
If multiple signaling steps are required for resource allocation, then resource allocation can be performed, but the process becomes inefficient for real-time data transmission
Solution Approach 1:
The patent improves productivity by performing preliminary resource configuration. Multiple uplink resources are allocated in advance before the actual data transmission needs arise. This allows the system to handle real-time data transmission efficiently because when scheduling requests are received at different timings, the eNodeB can immediately assign the corresponding pre-configured resource without initiating lengthy resource allocation procedures, thus enhancing transmission efficiency for delay-sensitive data
Solution Approach 2:
The patent applies segmentation by dividing the resource allocation process into distinct segments corresponding to different scheduling request timings. Each scheduling request timing (first, second, third timing) is associated with a specific pre-configured uplink resource. This segmentation allows the system to handle different types of data transmission needs separately and efficiently, avoiding the need for a single complex resource allocation procedure for all cases
Data Source
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AI summary
A method and an apparatus for scheduling in a mobile communication system. According to the method, for data/message pre-promised between a UE and a network node, the UE transmits a scheduling request at a predetermined timing. When the network node receives the scheduling request at the predetermined timing, the network node directly allocates a resource for transmission of the promised data/message by itself, so that the UE can instantly transmit the data/message. As a result, transmission delay can be reduced.