Nested Protocol Header Compression Coordination
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Solution Overview
Problem
Efficiency in compressing nested protocol packet headers in LTE systems is low due to duplicate function fields across different layers, leading to suboptimal data packet transmission.
Innovation Solution
A method and apparatus that coordinate and remove duplicate fields between the first and second protocol packet headers by borrowing function fields from the internal layer for use in the external layer, specifically utilizing the CRC and MSN fields to minimize duplication and enhance compression efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate compression profiles are used for internal and external protocol layers, then each layer can be compressed independently, but duplicate function fields exist across layers leading to low compression efficiency
Solution Approach 1:
The patent merges the compression processes of internal and external protocol layers by having the external layer compression profile reference and utilize compression results from the internal layer. Specifically, the external IP/UDP/GTP-U compression profile coordinates with the internal IP/UDP/RTP compression profile to share compression contexts and avoid redundant compression operations, thereby improving overall compression efficiency while maintaining the independence needed for separate layer processing
2Reliability
If complete protocol headers are transmitted without compression coordination, then all function fields are preserved, but data packet size increases and transmission efficiency decreases
Solution Approach 1:
The patent extracts and removes duplicate function fields from protocol headers through coordinated compression. The external layer compression profile identifies and eliminates redundant fields that are already compressed or represented in the internal layer, such as removing duplicate IP address fields when the internal layer already provides compressed representation, thereby reducing packet size while preserving necessary protocol information
Solution Approach 2:
The patent uses copying mechanisms where the external layer compression profile references and copies compression contexts from the internal layer. Instead of independently compressing all fields, the external layer copies relevant compression state information from the internal layer and builds upon it, reducing the amount of data that needs to be transmitted while maintaining complete protocol functionality
Data Source
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AI summary
Embodiments of the present invention disclose a method and apparatus for compressing a nested protocol packet header, which relate to the field of wireless communication technologies and are used to improve efficiency in compressing a nested protocol packet header in a data packet. The method for compressing a nested protocol packet header provided in the embodiments of the present invention includes: receiving a data packet sent by at least one sending end, where the data packet includes a first compression protocol packet header; taking the received data packet as a whole and nesting a second protocol packet header in it; and processing the data packet nested with the second protocol packet header, where the processing includes: coordinating part of function fields in the first compression protocol packet header and the second protocol packet header to remove a duplicate field, and compressing the second protocol packet header; and sending the processed data packet. The method and apparatus provided in the embodiments of the present invention are applicable to a data transmission process where multilayer nested compression exists.