AWIND’s one-to-many wireless screen sharing scheme currently has a growing number of wireless users, but the wireless/wired bandwidth resources are quite limited, in order to effectively solve the problem of single point sending, multi-point receiving, multicast technology applied to the network on a large scale, save bandwidth, effectively avoid the possibility of channel congestion. In simple terms, multicast is the simultaneous display of a single signal source on multiple display screens, which is often referred to as one-to-many projection. As shown in figure:
Multicast is also called multicast and multicast. A transport used in a network that allows a message to be sent to a selected subset of all possible destinations, that is, to multiple addresses that are specified. Is a method of communicating between a sender and multiple receivers. For example: a computer as the host, control multiple display screens at the same time.
Multicast applications can be divided into three categories (1 to many, many to one, many to many), but in the multicast screen sharing scheme, the most widely used is the one-to-many projection method. Such as:
Such as conference speech, presentation, video teaching and other scheduled events. Its traditional media distribution methods are usually television and radio. This type of application typically requires one or more data streams at a constant rate, and when multiple data streams (such as voice and video) are used, they often need to be synchronized with each other and have different priorities with each other. They usually require higher bandwidth and lower delay jitter, but they do not require higher absolute delay.
Such as network time, multicast session schedule, random Numbers, keys, configuration updates, network alerts for valid ranges, or other useful information. Their bandwidth requirements vary, but they are generally low and their latency requirements are modest.
Such as stock prices, sensing devices, safety systems, production information or other real-time information. This type of bandwidth may have constant rate bandwidth or burst bandwidth requirements depending on the sampling period and accuracy, and the bandwidth and latency requirements are generally general.
Multicast screen sharing Benefits: Increased wireless network usage.
Disadvantages: Too much multicast traffic will consume wireless network resources, and the stability of multicast traffic cannot be guaranteed.