Communication Device Data Segmentation for MTU-Limited Backhaul
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Solution Overview
Problem
Existing methods for data sharing in cooperative transmission systems, such as Joint Tx, often result in data sizes exceeding the maximum transmission unit (MTU) of the backhaul link due to added grant information, leading to difficulties in decoding damaged packets and increased transmission time.
Innovation Solution
A communication device and terminal that divide shared data into information types to generate data units equal to or less than the MTU, and recover the data using divided units for efficient cooperative transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grant information (MAC Header, CCMP Header, FCS) is added to the MAP-MSDU for cooperative transmission, then the data can be properly formatted and transmitted, but the data size exceeds the MTU size of the backhaul link
Solution Approach 1:
The patent segments the MAP-MSDU into multiple parts by dividing the shared data into information types (e.g., control information, data information) and further dividing these into segments that can fit within the MTU limit. This allows the grant information to be added while keeping each transmitted unit within the MTU constraint.
Solution Approach 2:
The patent introduces a new dimension of organization by categorizing data into information types and then into segments, creating a hierarchical structure that allows flexible fitting within MTU constraints while maintaining all necessary control information.
2Quantity of substance
If the MAP-MSDU is simply divided from the beginning according to the MTU, then the data can fit in transmission, but when packets are damaged during transmission, it becomes difficult to decode the entire data
Solution Approach 1:
The patent segments data into information types first (control information, data information), then further segments each type into manageable units. This hierarchical segmentation ensures that even if one segment is damaged, other segments can still be decoded, improving overall reliability.
Solution Approach 2:
The patent incorporates error correction mechanisms and redundancy in the segmentation structure beforehand, so that when packet damage occurs during transmission, the system has pre-prepared fallback mechanisms to recover and decode the data successfully.
3Quantity of substance
If the MAP-MSDU is divided into two using a second method, then data can be transmitted within MTU, but the packet interval increases and transmission time increases
Solution Approach 1:
The patent dynamically determines the number of segments based on the actual data size and MTU constraints, rather than using a fixed division method. This allows optimization of packet intervals and transmission time while ensuring all data fits within MTU limits.
Solution Approach 2:
The patent changes the segmentation parameters (number of segments, size of each segment) based on the specific data characteristics and transmission requirements, allowing efficient utilization of available bandwidth and time while maintaining MTU compliance.
Data Source
AI summary
The present technology relates to a communication device, a communication terminal, and a communication method that enable efficient sharing of data for cooperative transmission.A communication device divides shared data to be shared with another communication device for each information type in the shared data in order to perform cooperative transmission to a communication terminal, and generates a data unit less than or equal to a maximum transmission unit in a transmission path. The present technology can be applied to a wireless communication system.