Unidirectional communication scheme for remote maintenance and control in a broadband wireless access system

• US 6,594,467 B2
• Filed: 01/26/2001
• Issued: 07/15/2003
• Est. Priority Date: 01/26/2000
• Status: Expired due to Fees

• Current Assignee: Imago Research Limited Liability Company
• Original Assignee: VYYO, Ltd.
• Inventors: Bernstein, Abraham, Stern, Oded, Shensaif, Eddi, Asia, Raul, Fishler, Yaron, Bettan, Jack
• Primary Examiner(s): Maung, Nay
• Assistant Examiner(s): Persino, Raymond B
• Application Number:
  US09/771,166
• Publication Number:
  US 20020009970A1
• Time in Patent Office: 900 Days
• Field of Search: 455/67.1, 455/62, 455/63, 455/513, 455/423, 455/450, 455/509, 455/69, 455/515, 455/70, 455/556, 455/557, 455/419, 455/507, 455/88, 455/418, 455/470, 455/3.03, 455/92, 375/222, 379/93.28, 379/93.31
• US Class Current: 455/3.03
• CPC Class Codes: H04L 41/32 Specific management aspects for broadband networks
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: Y04S 40/00 Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them

Abstract

A system and method for remote maintenance and service of one or more wireless modems in communication with a wireless hub is provided. The system and method include the capability of the wireless hub to instruct the wireless modem(s) to change any operational parameters in order for the wireless hub to diagnose any problems with or to improve operation of the wireless mode.

Claims

1. A method for remotely testing a wireless modem in communication with a wireless hub, comprising:

synchronizing a wireless modem with a wireless hub on a downstream channel of a plurality of downstream channels;

receiving information from the wireless modem on at least one of a plurality of upstream channels that can be used to communicate from the wireless modem to the wireless hub;

placing the wireless modem into a service mode, by transmitting from the wireless hub an instruction for the wireless modem to operate in the service mode; and

testing at least one parameter of the wireless modem as directed by the wireless hub to determine an optimal modem set-up for upstream communication from the wireless modem to the wireless hub;

wherein said at least one parameter is at least one of an antenna configuration and an antenna position.

2. The method according to claim 1, wherein said modem and said hub comprise at least part of a wireless broadband access system.

3. The method according to claim 1, wherein said optimal modem set-up comprises an optimal upstream channel for communication with the wireless hub.

4. The method according to claim 1, wherein said at least one parameter is a modulation scheme selection.

5. The method according to claim 1, further comprising the steps of:

determining ambient conditions near said modem; and

placing the modem in an optimal set-up selected by a predictive model based on the ambient coditions.

6. The method according to claim 5, wherein said predictive model is based on previous testing of modem parameters and ambient conditions during the tests, and said ambient conditions include weather and topological structure.

7. The method according to claim 1, wherein said step of receiving information comprises receiving at least one message formatted according to a Data Over Cable System Interface Specification defined message.

8. The method according to claim 1, further comprising the steps of:

failing to receive the information transmitted from the wireless modem to the wireless hub at the wireless hub; and

testing at least one of the wireless modem parameters to reestablish an upstream communication path from the wireless modem to the wireless hub.

9. The method of claim 8 wherein the parameters are a group comprising transmission power, tramsmission frequency, modulation scheme, an upstream channel on which the wireless modem transmits, antenna configuration, and antenna positioning.

10. The method according to claim 9, wherein said wireless hub and said wireless modem are part of a broadband access system.

11. A method for performing remote maintenance on a wireless modem in communication with a wireless hub, comprising:

transmitting from the wireless hub to the wireless modem a first information signal;

receiving the first information signal transmitted from the wireless hub to the wireless modem at the wireless modem;

transmitting from the wireless modem to the wireless hub a second information signal;

receiving the second information signal transmitted from the wireless modem to the wireless hub at the wireless hub;

transmitting an instruction from the wireless hub to the wireless modem instructing the wireless modem to operate in a service mode;

operating the wireless modem in a service mode; and

testing several parameters of the wireless modem as directed by the wireless hub to improve transmission in an upstream communication path from the wireless modem to the wireless hub;

wherein said several parameters include at least one of an antenna configuration and an antenna position.

12. The method of claim 11 wherein the parameters are selected from a group comprising transmission power, transmission frequency, modulation scheme, an upstream channel on which the wireless modem transmits and antenna positioning.

13. The method of claim 11 further comprising:

storing at the wireless hub performance statistics of transmission on the upstream communication path based upon changes to the parameters; and

creating a predictive mode of the operation of a network including the wireless hub and wireless modem based upon the performance statistics.

14. A wireless modem, comprising:

a service mode device configured to receive at least one service mode instruction from a remote device;

a test mechanism configured to perform at least one test as directed by the service mode instruction;

a notification device configured to transmit a result of the test;

wherein said test comprises at least one of an antenna configuration test and an antenna position test.

15. The wireless modem according to claim 14, wherein said remote device is a wireless hub configured to operate in a wireless broadband access system.

16. The wireless modem according to claim 15, wherein the wireless modem communicates with the wireless hub using at least one message formatted as a Data Over Cable System Interface Standard defined message.

17. The modem according to claim 14, wherein said service mode device is further configured to recognize parameter change service mode commands and change a parameter as specified in the parameter change service mode command.

18. The modem according claim 17 wherein the parameters specified by said parameter change service mode commands include at least one of transmission power, transmission frequency, modulation scheme, an upstream channel on which the wireless modem transmits, antenna configuration, and antenna positioning.

19. The modem according to claim 14, wherein said modem is a Customer Premise Equipment in a wireless broadband access system.

20. A method of determining a status of a wireless modem, comprising the steps of:

receiving at least one instruction from a wireless hub;

testing the wireless modem as directed by said at least one instruction; and

sending a result of the test to the wireless hub;

wherein said testing comprises at least one of testing an antenna configuration and testing an antenna position.

21. The method according to claim 20, wherein said at least one instruction includes a MAC address of the modem.

22. The method according to claim 21, wherein said at least one instruction is formatted according to a Data Over Cable System Interface Specification defined message.