Patent ID: 7440435
Filing Date: 2008-10-21
Classification: H04L,H04W

Abstract:
1. A method for transmitting a packet of an IP (Internet Protocol) network to an MSS (Mobile Subscriber Station) in a downlink of a wireless communication system using a MAC (Media Access Control) protocol, the method comprising the steps of: segmenting, by a MAC-high layer, the packet received through the IP network into a plurality of ARQ (Automatic Repeat Request) blocks; transmitting, by the MAC-high layer, at least one ARQ block to an MAC-low layer together with predetermined header information for transmission of the ARQ block; receiving, by the MAC-low layer, the ARQ block based on the header information; assembling the received ARQ block into a PDU (Protocol Data Unit) block for being transmitted to the MSS; and transmitting, by the MAC-low layer, the assembled PDU block to the MSS, wherein the MAC protocol is separated into the MAC-high layer and the MAC-low layer, the MAC-high layer managing session information and having a fixed position, and the MAC-low layer being connected to a physical layer and having a variable position.