Mapping algorithm adopted in wireless network virtualization environment

A virtualized environment, wireless network technology, applied in network planning, wireless communication, network interconnection, etc., can solve problems such as attenuation, wireless transmission link susceptible to environmental influence signals, etc.

Active Publication Date: 2016-02-17
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0009] Then, the biggest difference between a wireless network and a wired network is that t

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  • Mapping algorithm adopted in wireless network virtualization environment
  • Mapping algorithm adopted in wireless network virtualization environment
  • Mapping algorithm adopted in wireless network virtualization environment

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Embodiment Construction

[0036] Below in conjunction with accompanying drawing, the present invention will be further described:

[0037] Such as figure 1 as shown in figure 1 , describes two virtual networks that may be heterogeneous. VN1 and VN2 are managed by service providers SP1 and SP2 respectively. SP1 uses the resources of two different basic service providers InP1 and InP2 to build a virtual network VN1. On the other hand, SP2 deploys virtual network VN2 in combination with sub-virtual network resources provided by infrastructure provider InP1 and service provider SP1. The mapping problem of network virtualization is to solve how InP1 and InP2 allocate reasonable resources according to the requests of VN1 and VN2.

[0038] 1 network model

[0039] 1.1 Wireless Physical Network Model

[0040] Using an undirected graph G with weights S =(N S , L S ) represents the underlying physical network, consider a time-slotted system. Among them, N S Represents the collection of underlying physic...

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Abstract

The invention discloses a mapping algorithm adopted in a wireless network virtualization environment. The mapping algorithm aims to solve the problem of existing wireless network virtualization mapping algorithms that public resources including bandwidth and frequency spectrum which can be shared between different basic facilities within a certain range and private resources including power and computing capacity which only belong to fixed hardware equipment and can not be shared are not well defined and distinguished. The mapping algorithm is capable of realizing joint optimization of power resources and frequency spectrum resources, interaction between power resources and frequency spectrum resources is comprehensively considered, the cost function of virtual network mapping is established by defining unit resource cost for reflecting the physical network loading level, mapping cost minimization is taken as the optimization object, physical network load balancing is achieved, path separation is adopted during virtual network mapping, and the utilization efficiency of physical resources is improved and the success rate of virtual network mapping is increased.

Description

technical field [0001] The present invention belongs to the research of mapping algorithm under wireless network virtualization environment, and belongs to the category of resource allocation, in particular to the research of resource allocation combining shareable public resources (such as frequency spectrum, etc.) and non-shared private resources (such as power, etc.). Background technique [0002] With the increasing maturity of multiple wireless communication technologies and the emergence of a large number of diversified mobile services, future wireless networks will present a diverse form of dense deployment, diverse services, and heterogeneous networks. In a complex network environment, issues such as the compatibility of multiple wireless network technologies, user selection of different wireless access networks, and switching between heterogeneous networks are new challenges for the development of wireless networks. The proposal of wireless network virtualization te...

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Application Information

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IPC IPC(8): H04L12/46H04L12/24H04W16/02
CPCH04L12/46H04L41/145H04W16/02Y02D30/70
Inventor 曹傧何芳李开荣李云
Owner CHONGQING UNIV OF POSTS & TELECOMM
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