AAL2 switching apparatus and method
AssigneeSamsung Electronics Co., Ltd.
InventorWoo-Joon Lee
Life of this patent
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Abstract
Disclosed is an AAL2 (ATM (Asynchronous Transfer Mode) Adaptation Layer 2) switching apparatus. A cell deassembler for deassembling a payload of a received ATM cell into a CPS (Common Part Sublayer) packet, and generating a first VPC (Virtual Path Connection) by using the header of the ATM cell. A header converter for receiving the CPS packet from the cell deassembler and converting the first VPC into a second VPC by using a lookup table which have a number of VPCs and CIDs (Channel Identifiers) for changing the VPC. A cell assembler for receiving the CPS packet from the header converter, assembling an ATM cell which have the CPS packet and an ATM header generated from the second VPC.
Claims10
An AAL2 (ATM (Asynchronous Transfer Mode) Adaptation Layer 2) switching apparatus in an ATM system, comprising:
- a cell deassembler for deassembling a payload of a received ATM cell into a CPS (Common Part Sublayer) packet, and generating a first VPC (Virtual Path Connection) by using the header of the ATM cell;
- a header converter for receiving the CPS packet from the cell deassembler and converting the first VPC into a second VPC by using a lookup table which have a number of VPCs and CIDs (Channel Identifiers) for changing the VPC;
- and
- a cell assembler for receiving the CPS packet from the header converter, assembling an ATM cell which have the CPS packet and an ATM header generated from the second VPC.
An AAL2 (ATM (Asynchronous Transfer Mode) Adaptation Layer 2) switching method in an ATM system including a lookup table block for. storing a second VPC (Virtual Path Connection) corresponding to a first VPC before the generation, comprising the steps of:
- (a) deassembling a received ATM cell into a CPS (Common Part Sublayer) packet;
- (b) generating a first VPC by using the header of the ATM cell;
- (c) converting the first VPC into a second VPC by using the lookup table block;
- and
- (d) assembling an ATM cell which have the CPS packet and generating an ATM header from the second VPC.
Dependencies are inferred from the claim text.