Gaming@Edge:基于边缘节点的低延迟云游戏系统

Gaming@Edge: low latency cloud gaming system based on edge nodes

云游戏作为云计算的“杀手级”应用正在引领游戏运行方式的变革。然而,云端与终端设备之间较大的网络延迟影响了云游戏的用户体验,因此,提出一种基于边缘计算理念,部署在边缘节点之上的低延迟的云游戏框架——Gaming@Edge。为了降低边缘节点的计算负载以提升其并发能力,Gaming@Edge实现了一种基于压缩图形流的云游戏运行机制——GSGOD。GSGOD分离了游戏运行中的逻辑计算和画面渲染,实现了一种边+端的计算融合。此外,GSGOD还通过数据缓存、指令流水处理以及对象状态延迟更新等机制优化了云游戏的网络数据传输和系统延迟。实验结果表明,Gaming@Edge相比传统的云游戏系统能够降低平均74%的网络延迟,并提高4.3倍游戏实例并发能力。

As a “killer” application in cloud computing,cloud gaming is leading the revolution of way of gaming. However,the high latency between the cloud and end devices hurts user experience. Aiming at the problem,a low latency cloud gaming system deployed on edge nodes,called Gaming@Edge,was proposed based on edge computing concept. To reduce the overhead of edge nodes for improving the concurrency,a cloud gaming running mechanism based on compressed graphics streaming,named GSGOD (Graphics Stream based Game-on-Demand),was implemented in Gaming@Edge system. The logic computing and rendering in the game running were separated and a computing fusion of edge nodes and end devices was built by GSGOD. Moreover,the network data transmission and latency were optimized through the mechanisms such as data caching,instruction pipeline processing and lazy object updating in GSGOD. The experimental results show that Gaming@Edge can reduce average network latency by 74% and increase concurrency of game instances by 4.3 times compared to traditional cloud gaming system.