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Association procedure to enable multiple multicast streams

A technology with additional multicast and association capabilities, which is applied in the field of communication systems and can solve problems such as unicast

Inactive Publication Date: 2012-01-04
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the host device is running an application capable of providing Scalable Video Coding, and the client device also supports Scalable Video Coding, then it is possible to efficiently broadcast the video content instead of sending the content unicast

Method used

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  • Association procedure to enable multiple multicast streams
  • Association procedure to enable multiple multicast streams
  • Association procedure to enable multiple multicast streams

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Embodiment Construction

[0025] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects. While the following description describes the invention step-by-step, it is intended to include a description of a system and a storage medium having computer-executable program instructions to achieve similar results as the steps defined.

[0026] There are several variations of mechanisms that facilitate the formation of multiple multicast groups to handle hierarchical transmission of multimedia content. available at figure 1 , figure 2 , image 3 and Figure 4 These changes are illustrated in the figure of . The steps of the process are presented in chronological order from top to bottom in each figure. Although only a single client is shown, several could be utilized.

[0027] as in figure 1 , figure 2 and Figure 4 As shown in , durin...

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Abstract

A method, system and computer program product for a wireless mobile display digital interface (WMDDI) association procedure that allows establishing and joining more than one multicast group to facilitate the interoperability of multiple client devices based on host and client capabilities. The protocol provides for the exchange and update of capabilities and multicast addresses for layered multicast transmission applications. The system is used for interoperating devices with different capabilities and provides for efficient transmissions by using different multicast addresses mapped to different layers of a bitstream. The protocol adapts to changes in capabilities, in joining / releasing of multicast addresses and in link quality.

Description

technical field [0001] The present invention relates generally to communication systems, and more particularly to associating multicast groups based on host and client capabilities to facilitate interoperability of multiple client devices. Background technique [0002] As disclosed in US Patent No. 6,760,772 and related patent applications, the Wireless Mobile Digital Display Interface (WMDDI) is an extension of the MDDI standard to wireless networks. The WMDDI protocol supports a host device (e.g., a mobile device such as a mobile phone or a personal digital assistant (PDA)) and a wide range of simultaneously reachable client devices (e.g., with embedded capabilities (e.g., audio / video decoding and rendering, or HID-capable wireless displays) for secure data exchange. Direct communication between client devices is not supported; only asymmetric client-to-host and host-to-client communication is supported. Communication is asymmetric in that very large amounts of data are ...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04W4/08
CPCH04N21/6582H04L12/1836H04L12/189H04N21/26291H04N21/6405H04W8/186H04N21/234327H04N21/25808H04W4/08H04W76/10
Inventor 胡迪特·马蒂内·包萨克里希南·拉亚马尼索哈母·谢特萨米尔·S·苏莱曼福阿德·肖卡特休伊·特兰多迪内希·达尔马拉朱顺亚·达斯
Owner QUALCOMM INC