💥1 概述
随着网络技术的飞速发展,流媒体类型的新型娱乐方式应运而生,与此同时,随着三维图形软硬件技术的进步,虚拟现实（VR）技术也逐渐成为当今最火热的技术之一。本文旨在VR视频流的预测、通信和计算持续时间优化。
📚2 运行结果
🎉3 参考文献
[1]吴长昊,王健,方丽华,郭庆稳.基于预测机制的云媒体网络自适应视频流选择算法[J].计算机应用研究,2016,33(11):3426-3429+3434.
👨💻4 Matlab代码
主函数部分代码：
clc;clear; T_cc_max = 0.2:0.05:50; Number_T_cc_max = length(T_cc_max); recp_T = 1./T_cc_max; tau = 0.1; T_seg = 1; T_ps = 1; %% The solution comes from formula (19) in the paper t_obw = max(T_ps - T_cc_max, tau); t_cc = min(T_cc_max,T_ps - tau); boundary_x = 1./(T_ps - tau)*ones(5,1); boundary_y = linspace(min(t_obw),max(t_cc),5); clear figure plot(recp_T,t_obw,'-b*','MarkerSize',8,'LineWidth',2);hold on; plot(recp_T,t_cc,'-g^','MarkerSize',8,'LineWidth',2);hold on; plot(boundary_x,boundary_y,'--r','LineWidth',2);hold on; set(gca,'xlim',[min(recp_T),max(recp_T)],'xtick',[min(recp_T) 1:1:max(recp_T)]);hold on; set(gca,'ylim',[min(min(t_obw)),max(max(t_cc))],'ytick',[min(min(t_obw)) 0.2:0.2:1 ] );hold on; set(gca,'FontSize',20,'Fontname', 'Times New Roman');hold on;grid on; legend('legend_2C_obw');hold on; legend_fig2b = legend('$t_{\mathrm{obw}}^{*}$','$t_{\mathrm{cc}}^{*}$','$\displaystyle T_{\mathrm{cc}}^{\max} = T_{\mathrm{ps}} - \tau $','FontName','Times New Roman','Fontsize',22); legend_fig2b.Interpreter = 'latex'; set(legend_fig2b,'Box','off'); text(1/(T_seg - tau)+ 0.5, max(t_cc) - 0.1,'Resource-limited region','FontName','Times New Roman','Fontsize',20,'FontWeight','bold');hold on; % text(1/(T_seg - tau)+ 0.5,min(t_obw)+0.1,'Prediction-limited region','FontName','Times New Roman','Fontsize',20,'FontWeight','bold');hold on; xlabel('xtolatex'); xtolatex = xlabel('$\displaystyle 1/T_{\mathrm{cc}}^{\max}$(1/seconds)','Fontsize',20); xtolatex.Interpreter = 'latex'; ylabel('Duration(seconds)','FontName','Times New Roman','Fontsize',20);
