Spectrum management method for information proactive caching in center multi-hop cognitive cellular network

A cellular network and spectrum management technology, applied in the field of mobile resource management in wireless communication, can solve the problem of low bandwidth utilization

Inactive Publication Date: 2015-08-05
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, many licensed bandwidths are extreme

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  • Spectrum management method for information proactive caching in center multi-hop cognitive cellular network
  • Spectrum management method for information proactive caching in center multi-hop cognitive cellular network
  • Spectrum management method for information proactive caching in center multi-hop cognitive cellular network

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] The schematic diagram of the information-centric multi-hop cognitive cellular network architecture is as follows: figure 1 shown. The flowchart of the method of the present invention is as figure 2 shown, including the following steps:

[0049] Step 1. Establish a system model, that is, an information-centric multi-hop cognitive cellular network model.

[0050] Step 1.1: Build a network model.

[0051] The total number of cognitive radio routers in a multi-hop cognitive cellular network is E, and each user belongs to one or more confederations in represents the set of all alliances, express The size of is Y. Since each user equipment accesses the network through a router, the number of users accessing through router e in each confederation y is denoted as u(y, e).

[0052] The entire timeline is divided into time slots of equal leng...

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Abstract

Provided is a spectrum management method for information proactive caching in a center multi-hop cognitive cellular network. The method comprises: establishing a system model, that is, a multi-hop cognitive cellular network model with information as center; establishing a markov decision process system with hidden and dynamic changing parameters; and performing spectrum management optimization. The method is aimed at solving a burst problem of network communication traffic and conversion of focus of users from a transfer file to obtaining interesting contents. Through the multi-hop cognitive cellular network architecture with information as the center and the dynamic spectrum management method, average hit probability of cache contents is improved, average hops required by users are reduced, and bandwidth is distributed to the most proper wireless link under the condition that unknown/varying network parameters and queue states in a router are considered, and meanwhile through the proactive caching method, contents which users may require in future are pushed to routers which are relatively close to the users, so as to improve integrated performance.

Description

technical field [0001] The invention relates to a spectrum resource management method for solving the traffic burst problem in an information-centered multi-hop cognitive cellular network, and belongs to the technical field of mobile resource management in wireless communication. technical background [0002] The traditional network protocol-based architecture has been a great success over the past 40 years, but recently this approach has not been well suited to address the explosion of network traffic and the shift in user focus from transferring files to obtaining content of interest. change. A new information-centric network architecture is proposed to solve this problem, which allows users to focus on the data they are interested in, leaving the network to find the location of the data and manipulate the transmission. In-network caching is also used in message-centric networks to cache data that has previously been forwarded by routers and to reduce message delivery del...

Claims

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Application Information

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IPC IPC(8): H04W16/14H04W72/04
CPCH04W16/14H04W72/04
Inventor 张延华闫玉玮司鹏搏李秋然张倩孙恩昌孙艳华
Owner BEIJING UNIV OF TECH
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