ETSI TS 103 179规定了返回链路封装（RLE）协议，该协议用于封装 必要的网络层数据包片段，例如IP数据报，以允许其通过返回进行传输 交互式卫星网络的链接。RLE源于通用流封装（GSE）协议[1]，用于网络的前向链路 通常以连续传输为特征的交互式和广播卫星网络受到限制 网络层数据包大小的可变性，以及通常能够承载超过 一个网络层数据包。RLE旨在最大限度地提高返回通道上的系统效率，而返回通道 其特点是突发性流量、高度可变的网络层数据包大小、较小的物理层突发和多个 访问限制。RLE协议旨在提供本文件中完全规定的三种主要功能， 也就是说:封装碎片帧封装如今用于DVB-RCS2[2]以及S-MIM[3]标准。

ETSI TS 103 179 specifies the Return Link Encapsulation (RLE) Protocol, which is used to encapsulate and if necessary fragment network layer packets such as for example IP datagrams to allow their transmission over the return link of an interactive satellite network.RLE has been derived from the Generic Stream Encapsulation (GSE) protocol [1], used in the forward links of interactive and broadcasting satellite networks, which are normally characterised by continuous transmission, limited variability in the size of network layer packets, and large physical layer frames typically capable of carrying more than one network layer packet. RLE was designed to maximise the system efficiency on the return channel, which is in turn characterised by bursty traffic, highly variable size of network layer packets, smaller physical layer bursts, and multiple access constraints.The RLE protocol is designed to provide three main functionalities which are fully specified in the present document, namely:encapsulationfragmentationframe packingRLE is today used in DVB-RCS2 [2] as well as in the S-MIM [3] standards.