Edge Cache Content Hit Method for Accurate Charging and Interception
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Solution Overview
Problem
Existing network architectures face issues with incorrect charging and skipped lawful interception due to direct content return from radio access network caches, leading to revenue loss and compliance problems for operators.
Innovation Solution
A cache content hit method involving an edge cache apparatus that stores and forwards content requests, adding hit or miss identifiers to messages, ensuring correct charging and interception by a charging and interception apparatus while reducing backhaul bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a radio access network cache is deployed on the base station side to cache repeated content accessed by users, then backhaul line transmission bandwidth between the radio access network and the charging and interception apparatus is reduced, but incorrect charging is performed by the charging and interception apparatus on user traffic and lawful interception on content is skipped
Solution Approach 1:
The patent introduces a cache status indication message as an intermediary mechanism between the radio access network cache and the charging and interception apparatus. This message carries cache hit/miss status information that enables the charging and interception apparatus to correctly identify whether content was served from cache or origin, ensuring accurate charging and lawful interception while maintaining the bandwidth benefits of local caching
2Loss of time
If Internet cache apparatus is disposed between the charging and interception apparatus and the Internet to cache Internet content, then content access delay is shortened, but the charging and interception apparatus cannot monitor Internet content accessed by the user
Solution Approach 1:
The patent segments the caching function into two parts: an Internet cache apparatus that caches content without interfering with monitoring, and a radio access network cache that serves users locally. The cache status indication mechanism ensures that charging and interception apparatus can monitor content requests before they reach the Internet cache, maintaining monitoring capability while benefiting from reduced access delay
Data Source
AI summary
Embodiments of the present invention include a cache content hit method to ensure that a charging and interception apparatus performs interception and charging on content accessed by a user. The method in the embodiments of the present invention includes: receiving a content request message that carries a content identifier; searching local cache content for content corresponding to the content identifier; and when it is determined that the content corresponding to the content identifier is stored, sending the content to the access network device; forwarding, by the edge cache apparatus to a core cache apparatus after adding a content hit identifier to the content request message, a content request message to which the content hit identifier is added to making the cache control apparatus discarding the content in the response message according to the content hit identifier.