Samsung Electronics Co., Ltd. (Suwon-si, KR)
What is a Patent for Method and apparatus to transmit and receive packets in the context of a communications system
Due to diversification of content as well as an increase in high-capacity content like High Definition (HD) content and Ultra High Definition (UHD) content, communication systems can be subject to increasing data load. This means that content sent by a sender (e.g. hosts A) could not be delivered to a recipient (e.g. a host B) and certain portions of it could be lost in transit.
In general, because data is sent in packets that are lost in the process, loss of content occurs on a per-packet basis. The packet could consist of one block, for example, a payload of data to be transmitted and address information such as an address for source and destination address, as well as management information, for example, a header. Therefore, if there is a loss of a packet within the network, a receiver may not know the data and management information in the lost packet since the lost packet is not received, causing the user discomfort in various types, including quality degradation of audio, quality degrading and image breakage of video, subtitles not being present, file loss, and similar issues.
For these reasons, Application Layer-Forward Error Correction (AL-FEC) is used to restore the data lost that occurred within the network and there is a requirement for a method to set up an FEC packet for AL-FEC and transmit and receive the FECpacket.
The above information is provided as background information to assist with an understanding of the present disclosure. It is not possible to determine and no claim is made, as to whether any of the above could be applicable as prior art with respect to the present disclosure.
The present disclosure’s aspects are to address the problems mentioned above or disadvantages, and provide at least the advantages described below. The present disclosure offers a method and apparatus to configure the Forward Error Correction packet for Application Layer Forward Error Correction operation (AL-FEC) sending and receiving that FEC packet, as well as improving the reliability of the network.
A method is described in detail that encodes a particular packet within a broadcasting system to provide an Internet Protocol (IP-based)-based multimedia service. This is in accordance with an aspect of the disclosure. This method involves dividing the data stream into datapayloads, then generating a Motion Picture Expert Group Media Transport (MMT), packet by adding a first head to each payload. The next step is to generate a source packet is done by adding an MMT header to the MMT package and then performing Forward ErrorCorrection(FEC) encryption of the MMT header-added MMT pack. The MMT header of the packet may contain type information of the MMT packet.
According to another aspect of this disclosure an apparatus is disclosed for encoding packets in broadcasting systems that support an IP-based multimedia system. The apparatus includes a controller that can divide the data stream into payloads, then to generate an MMT-formatted packet by adding a initial header to each of the data payloads and then generate an origin packet by adding an MMT packet header to the MMT package and performing FEC encryption on the header added to the MMT packet. TheMMT packet header may include type information of the MMT packet.
In accordance with further another aspect of the disclosed disclosure, a method of decoding a signal in a broadcasting system supporting an IP-based multimedia service is described. This method involves acquiring an MMT package from a source packet received by a transmitter and later decoding the packet. The source packet could be created by the transmitter designed to split a data stream into data payloads, to create an MMT packet by adding a first header to each datapayload and to create a source packet by adding an MMT packet header to the MMT packet , and performing FEC encoders on the header-added MMT packet. The MMT header of the packet could include details about the type of the MMT packet.
A device is available to decode packets within broadcasting systems that can support an IP-based multimedia service, in accordance with a different aspect. The apparatus comprises the controller that obtains an MMTpacket by acquiring a source packet from a transmitter, and a decoder that is able to decode the MMT packet. The transmitter can generate the source packet. It’s capable of dividing an information stream into payloads and forming an MMTpacket, by adding a header to every payload. Then it creates the source packet by adding an MT packet header the MMT packet and then doing FEC encryption on the header-added MMT pack. The MMT header of the packet can contain details about the type.
The description below will help you to see the other advantages, aspects, and important features of the disclosure. It is supported by the drawings attached.Click here to view the patent on USPTO website.
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