Hybrid ATM adaptation layer

• US 5,946,309 A
• Filed: 08/21/1996
• Issued: 08/31/1999
• Est. Priority Date: 08/21/1996
• Status: Expired due to Term

• Current Assignee: Unwired Planet LLC (JP Morgan Chase & Co)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Westberg, Lars, Petersen, Lars-Goran, Nasman, Karl Anders
• Primary Examiner(s): Pham, Chi H.
• Assistant Examiner(s): Duong, Frank
• Application Number:
  US08/701,146
• Time in Patent Office: 1,105 Days
• Field of Search: 370/395, 370/473, 370/474, 370/537, 370/538
• US Class Current: 370/395.3
• CPC Class Codes: H04L 2012/563 Signalling, e.g. protocols, reference model
• CPC Class Codes: H04L 2012/5652 Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
• CPC Class Codes: H04L 2012/5654 using the AAL1
• CPC Class Codes: H04L 2012/5656 using the AAL2
• CPC Class Codes: H04L 2012/5657 using the AAL3/4
• CPC Class Codes: H04L 2012/5672 Multiplexing, e.g. coding, scrambling
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections

Abstract

In a telecommunication system that generates more than one type of communication data stream, in which each data stream exhibits a distinctive data transfer format, bandwidth utilization is improved by first reformatting the different data transfer formats so that all of the data is compatible with a common data transfer protocol, for example, the Asynchronous Transfer Mode (ATM) protocol. The communication data and the corresponding control data, required to maintain communication data alignment, are multiplexed into a single data stream which is then transmitted over a common telecommunication channel to a receiving station.

Claims

1. In a telecommunication system, a method of transmitting data packets to a receiving station, comprising the steps of:

receiving hybrid data from at least one telecommunication application, wherein the hybrid data comprises a plurality of data transfer formats;

inserting data having a first data transfer format into at least one data packet;

inserting data having a second data transfer format into at least one data packet;

multiplexing the data packets into a single data stream;

generating control data for the at least one data packet corresponding to the data having a first data transfer format;

generating control data for the at least one data packet corresponding to the data having a second data transfer format;

multiplexing the control data into the single data stream;

transmitting the data packets and the control data to the receiving station over a common telecommunication channel;

wherein said transmitting step includes transmitting the control data to the receiving station over the common telecommunication channel in a header portion of an Asynchronous Transfer Mode cell,

wherein all data packets exhibit a common data transfer protocol.

2. A method in accordance with claim 1, wherein said step of transmitting the control data to the receiving station over the common telecommunication channel in a header portion of an Asynchronous Transfer Mode cell comprises the step of:

inserting the control data into a Payload Type Indicator field in the header portion of an Asynchronous Transfer Mode cell.

3. An apparatus in accordance with claim 1, wherein the common data transfer protocol is an Asynchronous Transfer Mode protocol and the data packets are Asynchronous Transfer Mode cells.

4. A method in accordance with claim 1, wherein the control data indicates the number of data packets corresponding to the data having a first data transfer format and the number of data packets corresponding to the data having a second data transfer format.

5. In a telecommunication system, a method of transmitting data packets to a receiving station, comprising the steps of:

receiving hybrid data from at least one telecommunication application, wherein the hybrid data comprises a plurality of data transfer formats;

inserting data having a first data transfer format into at least one data packet;

inserting data having a second data transfer format into at least one data packet;

multiplexing the data packets into a single data stream;

generating control data for the at least one data packet corresponding to the data having a first data transfer format;

generating control data for the at least one data packet corresponding to the data having a second data transfer format;

multiplexing the control data into the single data stream;

transmitting the data packets and the control data to the receiving station over a common telecommunication channel;

wherein said transmitting step includes transmitting the control data to the receiving station over the common telecommunication channel in a payload portion of an Asynchronous Transfer Mode cell;

wherein the Asynchronous Transfer Mode cell is a resource management Asynchronous Transfer Mode cell,

wherein all data packets exhibit a common data transfer protocol.

6. In a telecommunication system, a method of transmitting data packets to a receiving station, comprising the steps of:

receiving hybrid data from at least one telecommunication application, wherein the hybrid data comprises a plurality of data transfer formats;

inserting data having a first data transfer format into at least one data packet;

inserting data having a second data transfer format into at least one data packet;

multiplexing the data packets into a single data stream;

generating control data for the at least one data packet corresponding to the data having a first data transfer format;

generating control data for the at least one data packet corresponding to the data having a second data transfer format;

multiplexing the control data into the single data stream;

transmitting the data packets and the control data to the receiving station over a common telecommunication channel;

wherein said transmitting step includes transmitting the control data to the receiving station over the common telecommunication channel in a payload portion of an Asynchronous Transfer Mode cell;

wherein the Asynchronous Transfer Mode cell contains at least one microcell and wherein the control data is inserted into an extended portion of a microcell start pointer,

wherein all data packets exhibit a common data transfer protocol.

7. In a telecommunication system, a method of transmitting data packets to a receiving station, comprising the steps of:

receiving hybrid data from at least one telecommunication application, wherein the hybrid data comprises a plurality of data transfer formats;

inserting data having a first data transfer format into at least one data packet;

inserting data having a second data transfer format into at least one data packet;

multiplexing the data packets into a single data stream;

generating control data for the at least one data packet corresponding to the data having a first data transfer format;

generating control data for the at least one data packet corresponding to the data having a second data transfer format;

multiplexing the control data into the single data stream;

transmitting the data packets and the control data to the receiving station over a common telecommunication channel;

wherein said transmitting step includes transmitting the control data to the receiving station over the common telecommunication channel in a payload portion of a microcell,

wherein all data packets exhibit a common data transfer protocol.

8. A method in accordance with claim 7, wherein the microcell is a resource management microcell.

9. In a telecommunication system, an apparatus for transmitting data packets to a receiving station comprises:

means for receiving hybrid data from at least one telecommunication application, wherein the hybrid data comprises a plurality of data transfer formats;

means for inserting data having a first data transfer format into at least one data packet;

means for inserting data having a second data transfer format into at least one data packet;

means for multiplexing the data packets into a single data stream;

means for generating control data for the at least one data packet corresponding to the data having a first data transfer format;

means for generating control data for the at least one data packet corresponding to the data having a second data transfer format;

means for multiplexing the control data into the single data stream;

means for transmitting the data packets and the control data over a common telecommunication channel, including means for transmitting the control data to the receiving station over the common telecommunication channel in a header portion of an Asynchronous Transfer Mode cell,

wherein all data packets exhibit a common data transfer protocol.

10. An apparatus in accordance with claim 9, wherein said means for transmitting the control data to the receiving station over the common telecommunication channel in a header portion of an Asynchronous Transfer Mode cell comprises:

means for inserting the control data into a Payload Type Indicator field in the header portion of an Asynchronous Transfer Mode cell.

11. An apparatus in accordance with claim 9, wherein the common data transfer protocol is an Asynchronous Transfer Mode protocol and the data packets are Asynchronous Transfer Mode cells.

12. An apparatus in accordance with claim 9, wherein the control data indicates the number of data packets corresponding to the data having a first data transfer format and the number of data packets corresponding to the data having a second data transfer format.

13. In a telecommunication system, an apparatus for transmitting data packets to a receiving station comprises:

means for receiving hybrid data from at least one telecommunication application, wherein the hybrid data comprises a plurality of data transfer formats;

means for inserting data having a first data transfer format into at least one data packet;

means for inserting data having a second data transfer format into at least one data packet;

means for multiplexing the data packets into a single data stream;

means for generating control data for the at least one data packet corresponding to the data having a first data transfer format;

means for generating control data for the at least one data packet corresponding to the data having a second data transfer format;

means for multiplexing the control data into the single data stream;

means for transmitting the data packets and the control data over a common telecommunication channel, including means for transmitting the control data to the receiving station over the common telecommunication channel in a payload portion of an Asynchronous Transfer Mode cell;

wherein the asynchronous transfer mode cell is a resource management Asynchronous Transfer Mode cell,

wherein all data packets exhibit a common data transfer protocol.

14. In a telecommunication system, an apparatus for transmitting data packets to a receiving station comprises:

means for receiving hybrid data from at least one telecommunication application, wherein the hybrid data comprises a plurality of data transfer formats;

means for inserting data having a first data transfer format into at least one data packet;

means for inserting data having a second data transfer format into at least one data packet;

means for multiplexing the data packets into a single data stream;

means for generating control data for the at least one data packet corresponding to the data having a first data transfer format;

means for generating control data for the at least one data packet corresponding to the data having a second data transfer format;

means for multiplexing the control data into the single data stream;

means for transmitting the data packets and the control data over a common telecommunication channel, including means for transmitting the control data to the receiving station over the common telecommunication channel in a payload portion of an Asynchronous Transfer Mode cell;

wherein the Asynchronous Transfer Mode cell contains at least one microcell and wherein said control data is inserted into an extended portion of a microcell start pointer,

wherein all data packets exhibit a common data transfer protocol.

15. In a telecommunication system, an apparatus for transmitting data packets to a receiving station comprises:

means for receiving hybrid data from at least one telecommunication application, wherein the hybrid data comprises a plurality of data transfer formats;

means for inserting data having a first data transfer format into at least one data packet;

means for inserting data having a second data transfer format into at least one data packet;

means for multiplexing the data packets into a single data stream;

means for generating control data for the at least one data packet corresponding to the data having a first data transfer format;

means for generating control data for the at least one data packet corresponding to the data having a second data transfer format;

means for multiplexing the control data into the single data stream;

means for transmitting the data packets and the control data over a common telecommunication channel, including means for transmitting the control data to the receiving station over the common telecommunication channel in a payload portion of a microcell,

wherein all data packets exhibit a common data transfer protocol.

16. An apparatus in accordance with claim 15, wherein the microcell is a resource management microcell.