Patent ID: 9065764
Filing Date: 2015-06-23
Classification: H04L

Abstract:
1. A method for maintaining quality of service (QoS), comprising: identifying, by a provider edge (PE) device, a cell loss priority (CLP) and a service type of a received asynchronous transfer mode (ATM) cell, and obtaining a corresponding quality of service-QoS label according to the CLP and the service type; performing a comparison to determine whether the QoS label corresponding to the received ATM cell is the same as a QoS label corresponding to an existing ATM cell buffered in a local buffer; and in response to determining the QoS labels are different, encapsulating the buffered ATM cell into a pseudo wire (PW) packet and sending the PW packet, wherein the QoS label corresponding to the buffered ATM cell is used as a QoS label of a packet switched network (PSN) transport header of the PW packet or is used as QoS labels of both the PSN transport header and a PW header of the PW packet, and buffering the received ATM cell.