AAL0 cell format of an ATM protocol for communicating voice traffic in a CDMA system

A device configured to communicate voice data under an ATM protocol, the device comprising:

• a communication interface configured to receive one or more ATM Adaptation Layer 2 (AAL2) cells, wherein each AAL2 cell comprises a data field that includes a segment of full-rate voice data, wherein the segment of full-rate voice data is 24 bytes, and wherein the AAL2 cells are received from a base transceiver station (BTS) in a CDMA network that generates each AAL2 cell from a corresponding ATM Adaptation Layer 0 (AAL0) cell;
• and
• an AAL0 cell-generation system configured to generate an AAL0 cell that corresponds to each of the one or more received AAL2 cells, wherein each AAL0 cell comprises:
• a header field, wherein the header field is 5 bytes;
• a data field comprising the segment of full-rate voice data included in the AAL2 cell;
• a PAD field for padding the AAL0 cell such that the size of the AAL0 cell is in accordance with the ATM protocol, wherein the PAD field is 3 bytes;
• a 1-byte length field containing information for indicating a size of the segment of full-rate voice data included in the AAL2 cell;
• a 19-byte control-data field containing information for controlling said full-rate voice data;
• and
• a 1-byte error-detection field containing information usable to detect one or more data errors in said full-rate voice data;
• wherein the device is a base station controller (BSC) in the CDMA network.

A method for communicating voice data under an ATM protocol, the method comprising:

• receiving a full-rate voice data signal, wherein the full-rate voice data signal comprises one or more frames, wherein each frame includes a segment of full-rate voice data, wherein the segment of full-rate voice data included in said each frame is 24 bytes;
• generating an ATM Adaptation Layer 0 (AAL0) cell corresponding to each of the one or more frames, wherein each AAL0 cell comprises:
• a header field, wherein the header field is 5 bytes;
• a data field comprising the segment of full-rate voice data included in the frame, wherein the data field in each generated AAL0 cell is 24 bytes;
• a PAD field for padding the AAL0 cell such that the size of the AAL0 cell is in accordance with the ATM protocol, wherein the PAD field is 3 bytes;
• a 1-byte length field indicating a size of the segment of full-rate voice data included in the frame;
• a 19-byte control-data field containing information for controlling full-rate traffic data;
• and
• a 1-byte error-detection field containing information usable to detect one or more data errors in said full-rate voice data;
• generating an ATM Adaptation Layer 2 (AAL2) cell corresponding to each generated AAL0 cell, wherein each AAL2 cell comprises a data field that includes the segment of full-rate voice data from the AAL0 cell from which the AAL2 cell was generated;
• and
• sending the AAL2 cells to a base station controller (BSC) in a CDMA network;
• wherein the method is carried out at a base transceiver station (BTS) in the CDMA network.