device and method for restoration of unconfirmed 'network layer service access point indentifier (nsapi)' communication 'subnetwork dependent convergence protocol sndcp

摘要

A system and method of unacknowledged Network Layer Service Access Point Identifier (NSAPI) recovery in Sub-Network Dependent Convergence Protocol (SNDCP) communication are disclosed herein. The disclosed techniques prevent the loss of data which may result from changing between GPRS/GSM modes in a Class B mobile station (MS). The method includes the steps of detecting a layer (2) reset condition in layer (3), determining outstanding layer (3) to layer (2) requests for unacknowledged layer (2) communication and resending outstanding layer (3) to layer (2) requests from layer (3) to layer (2). IMAGE