Polling methods for use in a wireless communication system

• US 8,472,941 B1
• Filed: 01/29/2010
• Issued: 06/25/2013
• Est. Priority Date: 06/23/1999
• Status: Expired due to Term

• Current Assignee: Clearwire Communications LLC (Deutsche Telekom AG), Clearwire Ip Holdings LLC (Deutsche Telekom AG)
• Original Assignee: Clearwire Ip Holdings LLC (Deutsche Telekom AG)
• Inventors: Moinzadeh, Kamyar, Nguyen, Luong P., Hong, Liang A
• Primary Examiner(s): Ly, Nghi H
• Application Number:
  US12/697,089
• Time in Patent Office: 1,243 Days
• Field of Search: 455/423, 455/574, 455/67.14, 455/88, 370/449, 370/328, 370/338
• US Class Current: 455/423
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 52/0296 switching to a backup power supply
• CPC Class Codes: H04W 74/06 using polling
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Polling methods for use in a communication system, such as a fixed wireless communication system, are described. The fixed wireless communication system includes at least one wireless base unit and a plurality of fixed-location wireless transceiver units, where each transceiver unit is, for example, located at a home residence and coupled to a personal computer (PC). In one particular polling method, a wireless transceiver unit detects a failure of a primary energy source, switches to a battery backup for power, and sends a message to the wireless base unit indicating such failure. The message initiates the wireless base unit to poll the wireless transceiver unit on a periodic basis for status information. During the failure, a data traffic channel established between the units is torn down to conserve power at the wireless transceiver unit. Once the primary energy source is restored, the data traffic channel is brought back up and the periodic polling is terminated. Similar methods are applied in connection with the detection of a communication failure over the data traffic channel.

Claims

1. A method performed by a wireless base unit, the method comprising:

before establishing a connection oriented data link with a wireless transceiver unit, sending a first plurality of polling messages to the wireless transceiver unit requesting information, and receiving status information in response to the first plurality of polling messages from the wireless transceiver unit;

establishing a connection oriented data link with the wireless transceiver unit based on the status information received in response to the first plurality of polling messages, the connection oriented data link comprising a session established between the wireless base unit and the wireless transceiver unit; and

receiving data from the wireless transceiver unit over the connection oriented data link.

2. The method of claim 1, wherein the first plurality of polling messages are sent periodically.

3. The method of claim 1, further comprising before the connection oriented data link is established with the wireless transceiver unit:

receiving a problem message from the wireless transceiver unit; and

in response to the problem message, sending the plurality of polling messages to a wireless transceiver unit.

4. The method of claim 3, wherein the problem message indicates the wireless transceiver unit has experienced a power failure and is being powered by a backup battery.

5. The method of claim 1, wherein the first polling messages are sent to the wireless transceiver unit over a Common Link Channel and the status information sent in response to the first plurality of polling messages is received from the wireless transceiver unit over a Common Access Channel.

6. The method of claim 1, further comprising:

in response to the first plurality of polling messages, receiving configuration information, outage information, or call record information from the wireless transceiver unit.

7. The method of claim 1, further comprising:

in response to the first plurality of polling messages, receiving operating condition information, operating mode information, or previous usage information from the wireless transceiver unit.

8. The method of claim 1, further comprising:

in response to the first plurality of polling messages, receiving reception and transmission parameters for the wireless transceiver unit from the wireless transceiver unit.

9. The method of claim 1, further comprising:

in response to the first plurality of polling messages, receiving identifications of telephone calls made or received over a period of time from the wireless transceiver unit.

10. The method of claim 1, further comprising:

in response to the first plurality of polling messages, receiving call record information related to a plurality of calls placed or received by the wireless transceiver unit, the call record information comprising timestamps of the calls, durations of the calls, or a number of calls in the plurality of calls from the wireless transceiver unit.

11. The method of claim 1, further comprising:

sending a channel quality request message to the wireless transceiver unit; and

receiving a channel quality response message from the wireless transceiver unit comprising a received signal strength value for a plurality of channels.

12. The method of claim 1, further comprising:

before the connection oriented data link is established with the wireless transceiver unit, receiving a request from the wireless transceiver unit to initiate a call on an unsolicited Common Access Channel, the request including a sleep status of the wireless transceiver unit.

13. The method of claim 1, further comprising before the connection oriented data link is established with the wireless transceiver unit:

receiving an access request from the wireless transceiver unit to initiate a call on an unsolicited Common Access Channel; and

in response to the access request, assigning a scheduled Common Access Channel to the wireless transceiver unit to thereby establish substantially collision-free transmission on the scheduled Common Access Channel by the wireless transceiver unit.

14. The method of claim 13, wherein the access request requests the establishment of a High Speed Data link.

15. The method of claim 13, wherein the access request requests the establishment of a voice traffic channel.

16. The method of claim 1, further comprising before the connection oriented data link is established with the wireless transceiver unit:

receiving an access request from the wireless transceiver unit to initiate a call on an unsolicited Common Access Channel; and

in response to the access request, sending a connect message to the wireless transceiver comprising physical layer parameters required for establishing the connection oriented data link with the wireless transceiver unit.

17. The method of claim 16, wherein the access request requests the establishment of a High Speed Data link and the physical layer parameters comprise parameters required for establishing the High Speed Data link with the wireless transceiver unit.

18. The method of claim 1, further comprising:

sending a second plurality of polling messages to the wireless transceiver unit requesting information to facilitate subscriber services;

receiving information in response to the second plurality of polling messages from the wireless transceiver unit; and

maintaining event logs based at least in part on the information received in response to the second plurality of polling messages.

19. A method performed by a wireless base unit, the method comprising:

before establishing connection oriented data links with a plurality of wireless transceiver units, broadcasting a first plurality of polling messages to the wireless transceiver units requesting information, and in response to the first plurality of polling messages, receiving status information from at least a portion of the plurality of wireless transceiver units;

establishing a separate connection oriented data link with each of the wireless transceiver units in the portion of the plurality of wireless transceiver units based on the status information received from the wireless transceiver unit in response to the first plurality of polling messages, the connection oriented data link established for each of the wireless transceiver units in the portion of the plurality of wireless transceiver units comprising a session established between the wireless base unit and the wireless transceiver unit; and

receiving data from each of the wireless transceiver units in the portion of the plurality of wireless transceiver units over the connection oriented data link established therewith.

20. The method of claim 19, wherein the first plurality of polling messages are sent to the wireless transceiver unit over a Broadcast Channel and the information sent in response to the first plurality of polling messages is received from each of the wireless transceiver units in the portion of the plurality of wireless transceiver units over a Common Access Channel.

21. The method of claim 19, further comprising:

broadcasting a second plurality of polling messages to the wireless transceiver units requesting information to facilitate subscriber services;

receiving information in response to the second plurality of polling messages from the wireless transceiver units; and

maintaining event logs based at least in part on the information received in response to the second plurality of polling messages.

22. The method of claim 19, further comprising:

in response to the first plurality of polling messages, receiving configuration information, outage information, or call record information from the portion of the plurality of wireless transceiver units.

23. The method of claim 19, further comprising before the separate connection oriented data links are established with each of the wireless transceiver units in the portion of the plurality of wireless transceiver units:

receiving an access request from each of the wireless transceiver units in the portion of the plurality of wireless transceiver units to initiate a call on an unsolicited Common Access Channel; and

in response to each of the access requests, sending a connect message to the wireless transceiver that sent the access request, the connect message comprising physical layer parameters required for establishing the connection oriented data link with the wireless transceiver unit.

24. The method of claim 23, wherein for each access request requesting the establishment of a High Speed Data link, the physical layer parameters comprise parameters required for establishing the High Speed Data link with the wireless transceiver unit that sent the access request.

25. The method of claim 23, wherein the access requests comprise a request for a voice channel.