Caching Node Data Transmission for Network Load Reduction
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Solution Overview
Problem
The increasing mobile traffic in communication networks leads to significant load pressure on radio access and backhaul links due to the transmission of popular and long-lived data content, resulting in resource wastage and high operational costs, as conventional point-to-point transmission methods fail to efficiently manage the growing demand for high-speed data services.
Innovation Solution
Implementing a cache-based data transmission method where caching nodes, located at base stations or User Equipment, cache data with high popularity and long life cycles, and report their caching capabilities to the network side, allowing for optimized data caching and direct Device-to-Device communication, thereby reducing the transmission path and alleviating network load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional point-to-point transmission methods are used for massive mobile traffic, then data can be transmitted to users, but the load pressure on radio access and backhaul links increases significantly, causing resource wastage and high operational costs
Solution Approach 1:
The patent applies preliminary action by having caching nodes (base stations or UEs) pre-cache popular and long-lived data content before it is requested by users. This proactive caching reduces the need for repeated transmissions over radio access and backhaul links, thereby decreasing network load and resource consumption while maintaining high data transmission capacity.
Solution Approach 2:
The patent introduces caching nodes as intermediary elements between the core network and user equipment. These intermediaries store popular data locally, allowing users to retrieve content without direct access to the core network, thus reducing the load on backhaul and radio access links while maintaining efficient data delivery.
2Productivity
If physical capacity is increased to address growing mobile traffic, then transmission capacity improves, but establishment costs of operator networks increase dramatically
Solution Approach 1:
The patent applies copying by creating local replicas of popular data content at caching nodes. Instead of increasing physical network capacity to handle all traffic, the system creates copies of frequently accessed content that can be served locally, thereby maintaining high transmission capacity without the need for expensive physical infrastructure expansion.
Solution Approach 2:
The patent changes the parameter of data storage location from centralized core network to distributed caching nodes. This parameter change enables the network to serve more users with existing physical capacity by utilizing distributed storage, avoiding the need for costly infrastructure expansion while maintaining high transmission capacity.
3Ease of operation
If data contents with high popularity are transmitted repeatedly through conventional methods, then users can access the data, but the transmission path remains long and network load increases
Solution Approach 1:
The patent applies preliminary action by pre-positioning popular data content at caching nodes before user requests arrive. This allows users to access data from nearby caching nodes rather than retrieving it from distant core network elements, thereby maintaining easy data accessibility while significantly shortening the transmission path.
Solution Approach 2:
The patent introduces caching nodes as intermediaries that store popular content locally. Users access data through these intermediaries rather than directly from the core network, which shortens the transmission path while maintaining data accessibility. The intermediaries effectively reduce the average distance data must travel across the network.
Data Source
AI summary
The present disclosure discloses cache-based data transmission methods and apparatuses. The method is implemented as follows. An apparatus where a caching node is located reports a caching capability to a network side, and the caching node is configured to cache data. The network side sends a cache indicating parameter to the apparatus where the caching node is located, and maintains a data list. Wherein, the cache indicating parameter is configured to control the caching node to cache the data which has the property of high repetition probability and/or high cache utilization, and the data list is a list of the data cached in the caching node. When the caching node has cached data requested by a UE, the UE obtains the requested data from the caching node.