Cloud Media Processing - Embedded Community - Intel

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Basics of Cloud Computing According to a US National Institute of Standards and Technology definition, “Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provider interaction.” 1 The value propositions created by readily-available computing capacity and “pay-as-you-go” are the underpinnings of an economic model made possible by service-oriented software, virtualization and grid computing technologies, among others. Strong cloud computing momentum is reflected by IDC’s 2012 forecast—80 percent of new commercial enterprise applications will be deployed on cloud platforms. 2 Benefits of Cloud Computing Cloud computing leverages Internet networking technology and standard servers to create financial and infrastructure benefits for service providers and their customers. Financially, service providers can achieve significant cost savings by deploying lowcost, commoditized general-purpose servers and through high equipment utilization enabled by software consolidation. The value to cloud service customers is paying only for what they use and accessing additional resources (i.e., overflow capacity) when needed without making an upfront investment. In fact, the model dramatically lowers customers’ capital expenditures, minimizes depreciation expenses and improves cash flow. Since the computing platforms are already in place, customers can deploy services more quickly than if everything had to be done from the ground up. With respect to infrastructure, cloud computing is built with fungible computing resources that can be easily re-purposed, thus extending the useful lifetime of hardware and software investments. Capacity scales easily through the addition of new Intel ® -based servers, and the homogeneity of the equipment simplifies the management of datacenters and central office systems. Furthermore, compliance strategy is easier to develop and execute because of the consistency of the infrastructure. Cloud Media Processing | Radisys White Paper Fully Integrated Application Eg: Conferencing in Private Cloud Eg: Multimedia Ringback Tones, or Conferencing in Public Cloud Packaged Soſtware Soſtware as a Service (SaaS) Service Models Media Processing as a Service (MPaaS) Infrastructure as a Service (IaaS) Platform as a Service (PaaS) Figure 1. Media Processing as a Service (MPaaS) The cloud is capable of providing services on many levels, three categories of which are represented by the acronyms IaaS, PaaS and SaaS. These service categories are defined by TechTarget 3 as: • Infrastructure as a Service (IaaS) involves outsourcing the equipment used to support operations, including storage, hardware, servers and networking components. Eg: Media Applications on Base Hardware Infrastructure Eg: Network APIs for Application Developers • Platform as a Service (PaaS) is a paradigm for delivering operating systems and associated services over the Internet without downloads or installation. • Software as a Service (SaaS) is a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network, typically the Internet. In acknowledgment of media processing functions (see sidebar: What is a Real-time Service?), this paper introduces another type of service, referred to as “Media Processing as a Service” or MPaaS. This service model has hardware, an application programming interface (API) and application elements, so there are delivery mechanisms consistent with IaaS, PaaS and SaaS, as shown in Figure 1. 2
What is a Real-time Service? Cloud Media Processing | Radisys White Paper Real-time telecom services are differentiated by the need to meet time-critical parameters, including minimal end-to-end delay and jitter, to produce an acceptable quality of experience (QoE). For audio calls, the rule-of-thumb is the round trip delay cannot exceed 150 millisecond (ms), otherwise users will hear echos and get irritated. For this reason, VoIP is a classic real-time service. Video calling and conferencing are similar to VoIP, where delay must be minimized. Video conferencing also has “lip sync” issues caused by audio and video content being transmitted from source to destination on often separate RTP media streams; consequently, their paths and delay through an IP network will differ. To remedy this situation, the streams must be buffered and put back “in sync” at the receiving end by an IP media server, thus overcoming jitter and sync problems. In contrast, receiving an email and refreshing a browser screen are examples of a near-real-time service since users can’t detect or won’t care if it takes 150 ms or longer. Although users might get frustrated with slow Internet response, in most cases they will still use the service. Similarly, a 1-way video streaming service is considered near-real-time because the end user doesn’t know when the transmission was actually sent. Even with a bogged-down public Internet, YouTube or NetFlix streams are usually good enough for users to consume and enjoy the service. A real-time service is typically a true 2-way communication experience. In a real-time service, the users can immediately tell if the service is slow or not working properly. Today, this is evident with video calling and conferencing, where it is often “hit and miss” in terms of quality when streaming across broadband and 3G networks. The following lists examples of real-time telecommunication services: • VoIP calls • Video over IP calls • Multi-media conferencing • Video content streaming • Multimedia ringback tones • Interactive voice and video response (IVVR) 3
Page 1: Overview White Paper | May 2012 Clo
Page 5 and 6: Overcoming Challenges Around MPaaS
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Page 11 and 12: To better serve cloud computing cus
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Cloud Media Processing - Embedded Community - Intel

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