Secure resource optimization method under congestion control in heterogeneous cloud wireless access network

A wireless access network and congestion control technology, applied in the field of computer networks, can solve problems such as random transmission and large communication queues that are not considered

Inactive Publication Date: 2016-10-26
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, these works do not consider the random transmissions arriving, and assume that the communication queue is infinite
Since no solution to optimize resource allocation and maintain network stability has been applied to H-CRAN, a dynamic resource optimization method for heterogeneous cloud wireless access under congestion control is needed

Method used

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  • Secure resource optimization method under congestion control in heterogeneous cloud wireless access network
  • Secure resource optimization method under congestion control in heterogeneous cloud wireless access network
  • Secure resource optimization method under congestion control in heterogeneous cloud wireless access network

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Embodiment

[0054] The present invention uses a dynamic particle swarm algorithm to safely and optimally configure resource power under congestion control, specifically:

[0055] Step 1, collect system resource information in H-CRAN.

[0056] The number of HPNs is 1, the number of RRHs is 4, the number of HUE connections is 8, each RUE is served by the RRH, the number of resource blocks is 10, and the bandwidth of each RB is 15kHz. HPN and RRH path loss d M (dB)=128.1+37.6log 10 (R) and d R (dB)=140.7+37.6log 10 (R), R unit is km. The HPN static power is 43dBm, the maximum average power is 30dBm, and the noise and weak interlayer interference is set to -110dBm / Hz. α=0.6, β=0.4.

[0057] Step 2. Based on the system resource information collected in step 1, the system is modeled for congestion control optimization, and the model is transformed into three sub-processes: optimizing auxiliary variables, optimizing communication control, and optimizing resources and power.

[0058] Step ...

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Abstract

The invention discloses a secure resource optimization method under congestion control in a heterogeneous cloud wireless access network. The method comprises the steps of collecting system resource information in the heterogeneous cloud wireless access network; carrying out congestion control optimization system modeling on the system, and converting a model into three sub-processes; carrying out optimization operation on three sub-problems; initializing parameters of dynamic particle swarm optimization; initializing a particle swarm space, and initializing a particle swarm; calculating fitness of each individual in the swarm according to a fitness function; updating the optimum location of the current individual and the optimum location of the swarm according to a particle swarm optimization formula; carrying out intersection and variation operations on an knowledge space, thereby obtaining new individual locations and speeds after variation; and judging an iteration convergence index, outputting the optimum individual if convergence is carried out, and repeatedly carrying out iteration until preset iteration times is finished if the convergence is not carried out. According to the optimization method provided by the invention, the resource secure distribution of the heterogeneous cloud wireless access network can be improved under the congestion control, the energy efficiency resource is utilized fully, and the congestion control can be carried out dynamically.

Description

technical field [0001] The invention belongs to the technical field of computer networks, in particular to a secure dynamic resource optimization method under congestion control in a heterogeneous cloud wireless access network. Background technique [0002] Taking advantage of hybrid networks (heterogeneous networks, HetNet) and cloud radio access networks (cloud access radio access networks, C-RAN), some studies have proposed heterogeneous cloud radio access networks (heterogeneous cloud radio access networks, H-CRAN) to To enhance spectral efficiency and power efficiency, it uses remote radio heads (RRH) to provide users with high-speed data transmission rates required by high quality of service (QoS). For example, document 1 (M.Peng, Y.Li, et.al., "Heterogeneouscloud radio access networks: a new perspective for enhancing spectral and energy efficiencies", IEEE Wireless Commun., Dec.2014.) described. In the proposed H-CRAN, increase the cellular network capacity in the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W28/02H04W52/02H04W72/04
CPCH04W24/02H04W28/0289H04W52/0203H04W72/52Y02D30/70
Inventor 徐雷周迅钊张功萱张小飞钱芳王俊
Owner NANJING UNIV OF SCI & TECH
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