High-capacity scalable integrated wireless backhaul for broadband access networks

• US 7,092,363 B1
• Filed: 06/26/2000
• Issued: 08/15/2006
• Est. Priority Date: 06/26/2000
• Status: Expired due to Fees

• Current Assignee: Monument Bank of Intellectual Property, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Aperto Networks
• Inventors: Majidi-Ahy, Reza
• Primary Examiner(s): Nguyen, Steven
• Assistant Examiner(s): SHAND, ROBERTA A
• Application Number:
  US09/604,784
• Time in Patent Office: 2,241 Days
• Field of Search: 370/252, 370/253, 370/338, 370/349, 370/465, 370/466, 370/467, 370/469, 455/422, 455/446, 455/448, 455/449, 455/422.1, 709/227, 709/228, 709/229, 709/230, 709/249
• US Class Current: 370/252
• CPC Class Codes: H04L 12/2859 Point-to-point connection between the data network and the subscribers encapsulation H04L12/4633; virtual LANs H04L12/4641; routing of packets H04L45/00
• CPC Class Codes: H04L 47/2441 relying on flow classification, e.g. using integrated services [IntServ]
• CPC Class Codes: H04L 47/2491 Mapping quality of service [QoS] requirements between different networks
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]
• CPC Class Codes: H04W 84/22 with access to wired networks
• CPC Class Codes: H04W 92/045 between access point and backbone network device

Abstract

The invention provides a method and system for adaptive point-to-point communication between a wireless communication system and a non-wireless backhaul communication system. The wireless physical layer and the wireless media-access-control (MAC) layer collectively include a set of parameters, which are adaptively modified by base station controllers in multiple cells of the wireless communication system for intercommunication among those multiple cells. The IP layer and QoS (quality of service) parameters for communication between a selected base station controller and the non-wireless backhaul communication system collectively include a second set of parameters, which are adaptively modified by the selected base station controller for intercommunication between that selected base station controller and the non-wireless backhaul communication system. Wireless communication among multiple cells includes adaptive modification of parameters for the physical layer and the MAC layer, so as to optimize intercell communication without excessive interference with intracell communication. Thus, a first base station controller (selected for its relatively central communication position) adjusts communication with each neighbor base station controller individually and adaptively in response to changes in characteristics of communication, including physical characteristics, amount of communication traffic, and nature of application for the communication traffic. The first base station controller accounts for characteristics of communication for both intracell and intercell communication, including the possibility of interference between intracell and intercell communication. The combination of wireless communication and non-wireless communication over the entire channel between multiple customer premises equipment and at least one router in the non-wireless communication backhaul network includes adaptive modification of parameters for the IP layer and QoS, so as to optimize backhaul communication between customer premises equipment and the backhaul network.

Claims

1. A method, including steps of

determining first values for a plurality of first parameters and at least one second parameter for a communication link, said first parameters being associated with a first layer of an OSI model communication system and said second parameter being associated with a second layer of an OSI model communication system;

sending first information using said first values for said communication link, said communication link being either an intracell communication link or an intercell communication link;

obtaining second information regarding characteristics of said communication link in response to a result of said steps of sending;

adjusting a plurality of said first values in conjunction in response to said second information, whereby further use of said communication link is responsive to said steps of adjusting;

performing said step of determining with regard to both a first communication link and a second communication link;

performing said step of sending with regard to both said first communication link and said second communication link;

performing said step of obtaining with regard to both said first communication link and said second communication link; and

performing said step of adjusting in response to a result of said step of obtaining for each of said first communication link and said second communication link, whereby said step of adjusting is responsive to potential interference between communication on said first communication link and said second communication link.

2. A method as in claim 1, wherein

said first communication link includes either an intracell communication link or an intercell communication link;

and

said second communication link includes an intercell communication link.

3. A method as in claim 1, wherein said steps of adjusting include using a first hysteresis link parameter with regard to said first communication link and a second hysteresis link parameter with regard to said second communication link.

4. Apparatus including

means for determining first values for a plurality of first parameters and at least one second parameter for a communication link, said first parameters being associated with a first layer of an OSI model communication system and said second parameter being associated with a second layer of an OSI model communication system;

means for sending first information using said first values for said communication link, said communication link being either an intracell communication link or an intercell communication link;

means for obtaining second information regarding characteristics of said communication link in response to a result of said steps of sending; and

means for adjusting a plurality of said first values in conjunction in response to said second information, whereby further use of said communication link is responsive to said steps of adjusting;

wherein;

said means for determining is coupled to both a first communication link and a second communication link;

said means for sending is coupled to both said first communication link and said second communication link;

said means for obtaining is coupled to both said first communication link and said second communication link;

said means for adjusting is coupled to an output of said means for obtaining for each of said first communication link and said second communication link, said means for adjusting being responsive to potential interference between communication on said first communication link and said second communication link.

5. Apparatus as in claim 4, wherein

said first communication link includes either an intracell communication link or an intercell communication link;

and

said second communication link includes an intercell communication link.

6. Apparatus as in claim 4, wherein said means for adjusting include a first hysteresis link parameter with regard to said first communication link and a second hysteresis link parameter with regard to said second communication link.

7. Apparatus including

at least one base station controller configured for determining first values for a plurality of first parameters and at least one second parameter for a first communication link, said first parameters of said first communication link being associated with a first layer of an OSI model communication system and said second parameter of said first communication link being associated with a second layer of an OSI model communication system;

said base station controller being configured for sending first information using said first values for said first communication link, said first communication link being either an intracell communication link or an intercell communication link;

said base station controller being configured for obtaining second information regarding characteristics of said first communication link, after sending the first information using said first values; and

said base station controller being configured for adjusting a plurality of said first values in conjunction in response to said second information, whereby further communication over said first communication link uses said first values adjusted by the base station controller.

8. Apparatus as in claim 7, wherein

said base station controller is configured for determining second values for a plurality of first parameters and at least one second parameter for a second communication link, said first parameters of said second communication link being associated with a first layer of an OSI model communication system and said second parameter of said second communication link being associated with a second layer of an OSI model communication system;

said base station controller is configured for communicating over said second link using said second values for said second communication link;

said base station controller configured for of independently controlling the first parameters and said second parameters for both said first communication link and said second communication link, in response to potential interference between communication on said first communication link and said second communication link.

9. Apparatus as in claim 8, wherein

said first communication link includes either an intracell communication link or an intercell communication link;

and

said second communication link includes an intercell communication link.

10. Apparatus as in claim 8, wherein said means for adjusting include a first hysteresis link parameter with regard to said first communication link and a second hysteresis link parameter with regard to said second communication link.

11. A method, comprising steps of:

determining first values for a plurality of first parameters and at least one second parameter for a communication link, said first parameters being associated with a first layer of an OSI model communication system and said second parameter being associated with a second layer of an OSI model communication system;

sending first information using said first values for said communication link, said communication link being either an intracell communication link or an intercell communication link;

obtaining second information regarding characteristics of said communication link in response to a result of said steps of sending; and

adjusting a plurality of said first values in conjunction in response to said second information, whereby further use of said communication link is responsive to said steps of adjusting;

wherein the communication link comprises;

a wireless connection between a base station controller and customer premises equipment; and

a backhaul connection between the base station controller and a non-wireless communication system; and

wherein the plurality of adjusted first values comprises a value of at least one of the first parameters and a value of the second parameter.

12. A method, including steps of

determining first values for a plurality of first parameters and at least one second parameter for a communication link, said first parameters being associated with a first layer of an OSI model communication system and said second parameter being associated with a second layer of an OSI model communication system;

sending first information using said first values for said communication link, said communication link being either an intracell communication link or an intercell communication link;

obtaining second information regarding characteristics of said communication link in response to a result of said steps of sending; and

adjusting a plurality of said first values in conjunction in response to said second information, whereby further use of said communication link is responsive to said steps of adjusting;

wherein said step of obtaining comprises sensing an effect selected from the group consisting of fading and multipath effects; and

wherein the plurality of adjusted first values comprises a value of at least one of the first parameters and a value of the second parameter.

13. A method as in claim 12, wherein said step of obtaining comprises a step of sensing fading.

14. A method as in claim 12, wherein said step of obtaining comprises a step of sensing multipath effects.

15. A method, including steps of

determining first values for a plurality of first parameters and at least one second parameter for a communication link, said first parameters being associated with a first layer of an OSI model communication system and said second parameter being associated with a second layer of an OSI model communication system;

sending first information using said first values for said communication link, said communication link being either an intracell communication link or an intercell communication link;

obtaining second information regarding characteristics of said communication link in response to a result of said steps of sending; and

adjusting a plurality of said first values in conjunction in response to said second information, whereby further use of said communication link is responsive to said steps of adjusting;

wherein the plurality of first values comprises a value selected from the group consisting of a value of an antenna selection parameter, a value of a modulation type parameter, a value of a symbol rate parameter, a value of an error code parameter, a value of an equalization parameter, a value of a TDD duty cycle parameter, a number of message retransmission attempts over the communication link, a frequency of acknowledgement messages transmitted over the communication link, a symbol transmission rate of the communication link, a number of payload data bits assigned per symbol transmitted over the communication link, a number of error detection/correction bits assigned per symbol transmitted over the communication link, a number of payload data bytes assigned per message transmitted over the communication link, and a fraction of the communication link allocated to downstream communication.

16. A method as in claim 15, wherein the plurality of first values comprises a value of an antenna selection parameter.

17. A method as in claim 15, wherein the plurality of first values comprises a value of a modulation type parameter.

18. A method as in claim 15, wherein the plurality of first values comprises a value of a symbol rate parameter.

19. A method as in claim 15, wherein the plurality of first values comprises a value of an error code parameter.

20. A method as in claim 15, wherein the plurality of first values comprises a value of an equalization parameter.

21. A method as in claim 15, wherein the plurality of first values comprises a value of a TDD duty cycle parameter.

22. A method as in claim 15, wherein the plurality of first values comprises a number of message retransmission attempts over the communication link.

23. A method as in claim 15, wherein the plurality of first values comprises a frequency of acknowledgement messages transmitted over the communication link.

24. A method as in claim 15, wherein the plurality of first values comprises a symbol transmission rate of the communication link.

25. A method as in claim 15, wherein the plurality of first values comprises a number of payload data bits assigned per symbol transmitted over the communication link.

26. A method as in claim 15, wherein the plurality of first values comprises a number of error detection/correction bits assigned per symbol transmitted over the communication link.

27. A method as in claim 15, wherein the plurality of first values comprises a number of payload data bytes assigned per message transmitted over the communication link.

28. A method as in claim 15, wherein the plurality of first values comprises a fraction of the communication link allocated to downstream communication.