Multi-channel broadband adaptation processing

• US 5,936,967 A
• Filed: 11/27/1996
• Issued: 08/10/1999
• Est. Priority Date: 10/17/1994
• Status: Expired due to Term

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Baldwin, John H., Bharucha, Behram Homi, Doshi, Bharat Tarachand, Dravida, Subrahmanyam, Nanda, Sanjiv
• Primary Examiner(s): TON, DANG T
• Application Number:
  US08/757,208
• Time in Patent Office: 986 Days
• Field of Search: 370/535, 370/537, 370/389, 370/474, 370/471, 370/395, 370/310, 370/347, 370/341, 370/342, 370/335, 370/320, 370/503, 370/349, 370/338, 370/397, 370/399, 370/401, 370/522 , 370/465, 370/466, 370/467, 370/472, 370/469, 370/475, 370/476, 370/479, 370/442
• US Class Current: 370/474
• CPC Class Codes: H04L 2012/5607 Radio
• CPC Class Codes: H04L 2012/5652 Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
• CPC Class Codes: H04L 2012/5672 Multiplexing, e.g. coding, scrambling
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections

Abstract

A method and apparatus for transmitting and/or receiving variable-length packets (e.g., CDMA packets, CDPD packets) that are associated with different channels and which are multiplexed via a single virtual circuit (e.g., an ATM virtual circuit).

Claims

1. A method for multiplexing a first packet associated with a first channel identifier and comprising M octets, where M is a natural number, and a second packet associated with a second channel identifier and comprising N octets, where N is a natural number, into a cell information field, said method comprising:

building a first control octet #1 and a first control octet #2 that comprise;

(1) a first channel indicator based on said first channel identifier, and

(2) a first length indicator based on M;

building a second control octet #1 and a second control octet #2 that comprise;

(1) a second channel indicator based on said second channel identifier, and

(2) a second length indicator based on N; and

packing said first control octet # 1, said first control octet #2, said first packet, said second control octet #1, said second control octet #2 and said second packet into said information field.

2. The method of claim 1 wherein said step of packing further comprises concatenating said first control octet #1, said first control octet #2, said first packet, said second control octet #1, said second control octet #2 and said second packet into said cell information field.

3. The method of claim 1 wherein said first control octet #1 and said first control octet #2 further comprise a first error correction field based on said first channel indicator and said first length indicator, and said second control octet #1 and said second control octet #2 further comprise a second error correction field based on said second channel indicator and said second length indicator.

4. The method of claim 1 further comprising the step of aligning said first control octet #1 with a boundary of said cell information field.

5. The method of claim 1 wherein said first channel indicator and said second channel indicator each consist of 4 bits.

6. The method of claim 5 wherein said first length indicator and said length indicator each consist of 6 bits.

7. The method of claim 5 wherein said first error correction field and said second error correction field each consist of 5 bits.

15. The method of claim 5 wherein said first error correction field and said second error correction field each consist of 5 bits.

8. A method for multiplexing a first packet associated with a first channel identifier and comprising M octets, where M is a natural number, and a second packet associated with a second channel identifier and comprising N octets, where N is a natural number, into a cell information field, said method comprising:

building a first plurality of control octets that comprise;

(1) a first channel indicator based on said first channel identifier, and

(2) a first length indicator based on M;

building a second plurality of control octets that comprise;

(1) a second channel indicator based on said second channel identifier, and

(2) a second length indicator based on N; and

packing said first plurality of control octets, said first packet, said second plurality of control octets and said second packet into said cell information field.

9. The method of claim 8 further comprising the steps of:

associating said first channel identifier with a first channel;

associating said second channel identifier with a second channel.

10. The method of claim 8 wherein said step of packing further comprises concatenating said first plurality of control octets, said first packet, said second plurality of control octets and said second packet into said cell information field.

11. The method of claim 8 wherein said first plurality of control octets further comprise a first error correction field based on said first channel indicator and said first length indicator, and said second plurality of control octets further comprise a second error correction field based on said second channel indicator and said second length indicator.

12. The method of claim 8 further comprising the step of aligning said first plurality of control octets with a boundary of said cell information field.

13. The method of claim 8 wherein said first channel indicator and said second channel indicator each consist of 4 bits.

14. The method of claim 12 wherein said first length indicator and said length indicator each consist of 6 bits.

16. A method for multiplexing a first packet associated with a first channel identifier and comprising M octets, where M is a natural number, and a second packet associated with a second channel identifier and comprising N octets, where N is a natural number, into a first cell information field associated with a first cell and into a second cell information field associated with a second cell, said method comprising:

building a first plurality of control octets that comprise;

(1) a first channel indicator based on said first channel identifier,

(2) a first length indicator based on M;

building a second plurality of control octets that comprise;

(1) a second channel indicator based on said second channel identifier,

(2) a second length indicator based on N;

packing said first plurality of control octets, said first packet, said second plurality of control octets and X octets of said second packet into said first cell information field;

building at least one control octet that comprises;

(1) a third length indicator based on N-X, where X is a natural number;

packing said at least one control octet and N-X octets of said second packet into said second cell information field.

17. The method of claim 16 wherein said step of packing said first plurality of control octets further comprises concatenating said first plurality of control octets, said first packet, said second plurality of control octets and said second packet into said cell information field.

18. The method of claim 16 wherein said first plurality of control octets further comprise a first error correction field based on said first channel indicator and said first length indicator, and said second plurality of control octets further comprise a second error correction field based on said second channel indicator and said second length indicator.

19. The method of claim 16 further comprising the step of aligning said first plurality of control octets with a boundary of said cell information field.

20. The method of claim 16 wherein said first channel indicator and said second channel indicator each consists of 4 bits.

21. The method of claim 20 wherein said first length indicator and said length indicator each consist of 6 bits.

22. The method of claim 20 wherein said first error correction field and said second error correction field each consist 5 bits.