Methods and systems for interfacing wired/wireless hybrid systems

• US 20020080774A1
• Filed: 08/16/2001
• Published: 06/27/2002
• Est. Priority Date: 09/08/2000
• Status: Abandoned Application

• Current Assignee: Avtec Systems, Inc. (Kratos Defense & Security Solutions Incorporated)
• Original Assignee: Avtec Systems, Inc. (Kratos Defense & Security Solutions Incorporated)
• Inventors: Russell, Stephen, Hirsch, Ronald, Griffith, Thomas, Rafelghem, Stefan Van
• Application Number:
  US09/930,288
• Publication Number:
  US 20020080774A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/163 In-band adaptation of TCP data exchange; In-band control procedures
• CPC Class Codes: H04L 69/164 Adaptation or special uses of UDP protocol
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 80/06 Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Methods and systems are provided to manage communications in networks having wired and wireless portions. By determining the optimum segment size for a wireless link based on various status conditions such as bit-error rates, data throughput across the wireless link can be improved. Accordingly, data received from a wired network can be repackaged using the desired segment size before being transmitted over the wireless link. Similarly, optimum-sized segments can be received from the wireless link and the data in the received segments can be passed to the wired network.

Claims

1. A method for communicating, comprising:

receiving a first segment from a wired network; and

transmitting one or more second segments over a wireless link, wherein the one or more second segments contain data from the first segment, and wherein the size of at least one of the second segments is based on a status condition.

2. The method of claim 1, wherein the status condition is associated with the wireless link.

3. The method of claim 2, wherein the wireless link is based on a continuous communication technique.

4. The method of claim 2, wherein the wireless link is based on a burst communication technique.

5. The method of claim 2, wherein the status condition is received from an access point associated with the wireless link.

6. The method of claim 2, wherein the status condition is received from a wireless device associated with the wireless link.

7. The method of claim 2, further comprising sending an acknowledgment for the first segment over the wired network before the data contained in the first segment is received by a wireless receiver.

8. The method of claim 2, wherein at least one of the first segment and the second segment is based on transmission control protocol (TCP).

9. The method of claim 2, wherein the status condition is based on at least a bit-error rate.

10. The method of claim 2, wherein status condition is based on at least a number of erroneous frames.

11. The method of claim 2, wherein status condition is based on at least a signal level associated with the wireless link.

12. The method of claim 11, wherein status condition is further based on at least one of a noise level associated with the wireless link and an interference level associated with the wireless link.

13. The method of claim 2, wherein status condition is further based a rate of change of an error parameter.

14. The method of claim 2, wherein the wireless link is a cellular link.

15. The method of claim 2, wherein the wireless link is a satellite-based link.

17. The apparatus of claim 16, wherein the status condition is associated with the wireless link.

18. The apparatus of claim 17, further comprising a first interface coupled to the wired network, wherein the first device communicates using wired segments.

19. The apparatus of claim 18, further comprising a reformatting device that extracts data from a first wired segment and incorporates the wired data into one or more first wireless segments.

20. The apparatus of claim 19, wherein the reformatting device extracts data from a second wireless segment and incorporates the wireless data into one or more second wired segments.

21. The apparatus of claim 18, further comprising a reformatting device that extracts data from a second wireless segment and incorporates the wireless data into one or more second wired segments.

22. The apparatus of claim 18, further comprising an acknowledgment device that acknowledges a first wired segment received from the wired network before the data contained in the first wired segment is received by a wireless receiver.

23. The apparatus of claim 18, wherein the first interface communicates based on at least transmission control protocol (TCP).

24. The apparatus of claim 18, wherein the second interface communicates based on at least transmission control protocol (TCP).

25. The apparatus of claim 18, wherein the status condition is based on at least a bit-error rate.

26. The apparatus of claim 18, wherein status condition is based on at least a number of erroneous frames.

27. The apparatus of claim 18, wherein status condition is based on at least a signal level associated with the wireless link.

28. The apparatus of claim 27, wherein status condition is further based on at least one of a noise level associated with the wireless link and an interference level associated with the wireless link.

29. The apparatus of claim 18, wherein status condition is further based on a status condition trend.

16. An apparatus for communicating between a wired network and a wireless link, comprising:

a second interface coupled to the wireless link, wherein the second device communicates using wireless segments; and

a segment controller that controls the size of at least one wireless segment based on a status condition.

30. A method for communicating between a first network and a second network, comprising:

receiving first data from the first network; and

transforming the first data into second data having a second format, wherein the second format is based on a status condition of the second network.

31. The method of claim 30, further comprising transmitting the second data to a receiving device associated with the second network.

32. The method of claim 31, wherein the status condition is received from the receiving device.

33. The method of claim 32, wherein the status condition is based on an outgoing channel associated with the receiving device.

34. The method of claim 33, wherein the second network is a wireless network.

35. The method of claim 34, further comprising receiving an acknowledgment from the receiving device.

36. The method of claim 34, wherein at least one of the first format and the second format is based on transmission control protocol (TCP).

38. The apparatus of claim 37, further comprising a second interface that transmits the second data to a receiving device associated with the second network.

39. The apparatus of claim 38, wherein the status condition is received from the receiving device.

40. The apparatus of claim 39, wherein the status condition is based on an outgoing channel associated with the receiving device.

41. The apparatus of claim 40, wherein the second network is a wireless network.

43. The apparatus of claim 41, wherein at least one of the first format and the second format is based on transmission control protocol (TCP).

44. Segmenting the end-to-end link into wireless and wired links and isolating the performance of the wireless link from the performance of the wired links using the apparatus of claim 37 on both sides of the wireless link.

37. An apparatus for communicating between a first network and a second network, comprising:

a first interface that receive first data from the first network; and

a reformatting device that transforms the first data into second data having a second format, wherein the second format is based on a status condition of the second network.

42. The apparatus of 41, further comprising an acknowledgment device that receives an acknowledgment from the receiving device.