System and method for transporting digital radio signal streams in a small cell network environment

• US 8,824,478 B2
• Filed: 12/23/2011
• Issued: 09/02/2014
• Est. Priority Date: 12/23/2011
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Shatzkamer, Kevin D., Dalela, Ashish, Morrow, Monique J., Tomsu, Peter Christian, Hammer, Michael P., Vucetic, Vojislav
• Primary Examiner(s): Ngo, Ricky
• Assistant Examiner(s): SAMUEL, DEWANDA A
• Application Number:
  US13/336,167
• Publication Number:
  US 20130163524A1
• Time in Patent Office: 984 Days
• Field of Search: 370/329, 370/265, 370/277, 370/300, 370/335
• US Class Current: 370/394
• CPC Class Codes: H04J 2203/003 Medium of transmission, e.g. fibre, cable, radio
• CPC Class Codes: H04J 2203/0046 User Network Interface
• CPC Class Codes: H04L 12/2865 Logical combinations
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

A method is provided in one example embodiment that includes receiving a radio signal stream, segmenting the radio signal stream based on a control word in the radio signal stream, mapping the segmented radio signal stream to a service class, transporting the segmented radio signal stream in packets through channels over a backhaul link, and maintaining the order of the radio signal stream over the backhaul link. In more particular embodiments, the backhaul link may use a DOCSIS link, the radio signal stream can be received using a Common Public Radio Interface, and the radio signal stream may include sub-streams transported through segmented channels over the backhaul link.

Claims

1. A method, comprising:

receiving a radio signal stream;

segmenting the radio signal stream based on a control word in the radio signal stream;

mapping the segmented radio signal stream into a service class;

transporting the segmented radio signal stream in packets through channels over a backhaul link;

providing a control channel along the backhaul link, the control channel for communicating channel bundling information between network elements disposed at opposite ends of the backhaul link, the channel bundling information for facilitating segmentation of the radio signal stream on one end of the backhaul link and reassembly of the radio signal stream on the opposite end of the backhaul link; and

maintaining an order of the segmented radio signal stream over the backhaul link.

2. The method of claim 1, wherein the backhaul link is a link between a cable modem and a cable modem termination system.

3. The method of claim 1, wherein the backhaul link is a Data over Cable Service Interface Specification link.

4. The method of claim 1, wherein the radio signal stream is received using a Common Public Radio Interface.

5. The method of claim 1, wherein the radio signal stream comprises sub-streams and the sub-streams are transported through segmented channels over the backhaul link.

6. The method of claim 4, further comprising mapping the sub-streams transported through segmented channels into a second radio signal stream.

7. The method of claim 1, wherein the control word identifies the radio signal stream as synchronization such that the radio signal stream is treated as a fixed-length data segment and is assigned a unsolicited grant service (UGS) service class.

8. Logic encoded in one or more non-transitory media that includes code for execution and when executed by one or more processors is operable to perform operations comprising:

receiving a radio signal stream;

segmenting the radio signal stream based on a control word in the radio signal stream;

mapping the segmented radio signal stream into a service class;

transporting the segmented radio signal stream in packets through channels over a backhaul link;

providing a control channel along the backhaul link, the control channel for communicating channel bundling information between network elements disposed at opposite ends of the backhaul link, the channel bundling information for facilitating segmentation of the radio signal stream on one end of the backhaul link and reassembly of the radio signal stream on the opposite end of the backhaul link; and

maintaining an order of the segmented radio signal stream over the backhaul link.

9. The encoded logic of claim 8, wherein the backhaul link is a link between a cable modem and a cable modem termination system.

10. The encoded logic of claim 8, wherein the backhaul link is a Data over Cable Service Interface Specification link.

11. The encoded logic of claim 8, wherein the radio signal stream is received using a Common Public Radio Interface.

12. The encoded logic of claim 8, wherein the radio signal stream comprises sub-streams and the sub-streams are transported through segmented channels over the backhaul link.

13. The encoded logic of claim 8, wherein the operations further comprise mapping the sub-streams transported through segmented channels into a second radio signal stream.

14. The encoded logic of claim 8, wherein the control word identifies the radio signal stream as synchronization such that the radio signal stream is treated as a fixed-length data segment and is assigned a unsolicited grant service (UGS) service class.

15. An apparatus, comprising:

one or more processors operable to execute instructions such that the apparatus is configured for;

receiving a radio signal stream;

segmenting the radio signal stream based on a control word in the radio signal stream;

mapping the segmented radio signal stream into a service class;

transporting the segmented radio signal stream in packets through channels over a backhaul link;

providing a control channel along the backhaul link, the control channel for communicating channel bundling information between network elements disposed at opposite ends of the backhaul link, the channel bundling information for facilitating segmentation of the radio signal stream on one end of the backhaul link and reassembly of the radio signal stream on the opposite end of the backhaul link; and

maintaining an order of the segmented radio signal stream over the backhaul link.

16. The apparatus of claim 15, wherein the backhaul link is a link between a cable modem and a cable modem termination system.

17. The apparatus of claim 15, wherein the backhaul link is a Data over Cable Service Interface Specification link.

18. The apparatus of claim 15, wherein the radio signal stream is received using a Common Public Radio Interface.

19. The apparatus of claim 15, wherein the radio signal stream comprises sub-streams and the sub-streams are transported through segmented channels over the backhaul link.

20. The apparatus of claim 15, wherein the apparatus is further configured for mapping the sub-streams transported through segmented channels into a second radio signal stream.