Method for combining resource allocation and content caching in F-RAN architecture

A technology for content caching and resource allocation, which is applied in the field of joint resource allocation and content caching, can solve problems such as waste of cache resources, inability to guarantee service delay, waste of spectrum resources, etc., and achieve the goal of reducing the pressure on fronthaul links and improving resource utilization Effect

Active Publication Date: 2019-06-28
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] Most of the existing research literature on resource allocation and content caching of network slicing has no Considering the impact of their dynamic and randomness on resource allocation and caching; without considering the impact of the current time slot decision on future resource allocation and content caching strategies, if the frequently requested content of the network slice is cached, spectrum resources will be saved , if you cache content

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  • Method for combining resource allocation and content caching in F-RAN architecture
  • Method for combining resource allocation and content caching in F-RAN architecture
  • Method for combining resource allocation and content caching in F-RAN architecture

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[0039] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] see figure 1 shown, figure 1It is an F-RAN scene diagram, including five parts: BBU pool 101, used for processing baseband signals; fronthaul fronthaul link 102, which is a wired transmission link, connecting BBU and edge fog node 103; edge fog node 103 has computing, Edge network equipment with caching and communication capabilities; wireless access link 104 is a communication link that wirelessly connects users in network slices to edge fog nodes 103 ; content requests dynamically arriving in network slices 105 are queued at edge fog nodes 103 . The edge fog node 103 determines resource allocation and content based on information such as the length of the virtual queue established for the content and the data rate of the content transmitted by the fronthaul link and the wireless access link, and comprehensively considers the possi...

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Abstract

The present invention relates to a method for combining resource allocation and content caching in an F-RAN architecture, and belongs to the field of mobile communication. The method comprises the following steps of: in an F-RAN scene, while content service delay and network slice SLA constraint are ensured, carrying out network slice wireless resource allocation and content caching decision by taking maximization of long-term average effectiveness of the system as a target; in each discrete time slot, according to length state of a content request virtual queue of an edge fog node of a current time slot and state information of network slice content transmission capability of a forward link and a wireless access link, allocating proper wireless resources for each network slice dynamicallywithin limitation of wireless resource capacity and cache capacity, and caching the content requested by the network slices at the edge fog node. According to the method and the device, the content service delay and the network slice SLA can be ensured, meanwhile, the forward link pressure is reduced, and the resource utilization rate is increased.

Description

technical field [0001] The invention belongs to the field of mobile communication, and relates to a method for joint resource allocation and content caching in an F-RAN architecture. Background technique [0002] With the continuous development of communication technology, a variety of application scenarios will appear in the future 5G network, which also means that different applications have different requirements for mobility, security, delay and reliability. How to meet the diverse business requirements has brought huge challenges to the existing network architecture. Therefore, a network slice (Network Slice, NS) technology emerges as the times require. At the same time, the Fog-Radio Access Network (F-RAN) architecture utilizes the computing, caching, and communication capabilities of edge fog nodes to distribute content to network slices, which not only reduces the pressure on fronthaul links and the BBU pool. The burden of signal processing also improves the utiliz...

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Application Information

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IPC IPC(8): H04W16/04H04W16/22H04W28/14
Inventor 陈前斌马润琳魏延南肖娇唐伦
Owner CHONGQING UNIV OF POSTS & TELECOMM
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