Method and apparatus for supporting communication in pico networks

• US 8,687,608 B2
• Filed: 01/05/2007
• Issued: 04/01/2014
• Est. Priority Date: 01/05/2007
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Soliman, Samir S.
• Primary Examiner(s): Zewdu, Meless N
• Assistant Examiner(s): Nguyen, Michael
• Application Number:
  US11/620,629
• Publication Number:
  US 20080165709A1
• Time in Patent Office: 2,643 Days
• Field of Search: 455/41.2, 455/41.3, 455/552.1, 455/553.1, 455/426.1, 455/550.1, 455/414.1, 455/426.2, 455/436, 455/437, 455/438, 455/420, 455/432.1, 455/433, 455/554.1, 455/554.2, 455/555, 370/310, 370/328, 370/331, 370/338
• US Class Current: 370/338
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 84/105 PBS [Private Base Station] network H04W84/12 - H04W84/16 take precedence
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• 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

Techniques for extending coverage of a wireless communication network (e.g., a cellular network) to indoor and other locations are described. A wireless device may communicate with a base station in a wireless network via downlink and uplink frequency channels in a licensed frequency band using frequency division duplexing (FDD). The wireless device may communicate with a piconet base station (PBS) in a pico network (piconet) via the uplink frequency channel using time division duplexing (TDD). The PBS may communicate with the wireless device on the uplink frequency channel and may exchange data with the wireless network via a wireline communication link. The PBS may forward data received from the wireless device to the wireless network and may also forward data received from the wireless network for the wireless device to the wireless device. The PBS may receive paging messages from the wireless network for the wireless device and may forward the paging messages to the wireless device.

Claims

1. An apparatus comprising:

at least one processor configured to perform data processing for communication with a wireless communication network via a first base station in the wireless communication network using frequency division duplexing (FDD) over respective uplink and downlink frequency channels, to perform operations for associating with a second base station in a pico network (piconet), to perform, after completing the association, data processing for communication with the wireless communication network via the second base station using time division duplexing (TDD), wherein TDD communications comprise uplink and downlink communications that both share the same frequency channel as the FDD uplink frequency channel for the first base station, and to monitor for signals from the first base station on the FDD downlink frequency while communicating via the second base station on the FDD uplink frequency using TDD; and

a memory coupled to the at least one processor.

2. The apparatus of claim 1, wherein the downlink and uplink frequency channels are in a licensed frequency band.

3. The apparatus of claim 1, wherein the at least one processor is configured to register with the wireless communication network and to receive paging messages from the wireless communication network via the second base station.

4. The apparatus of claim 1, wherein the at least one processor is configured to perform data processing in accordance with a single radio technology for communication with the first and second base stations.

5. The apparatus of claim 1, wherein the at least one processor is configured to perform data processing in accordance with Wideband Code Division Multiple Access (W-CDMA) or cdma2000 for communication with the first base station.

6. The apparatus of claim 1, wherein the at least one processor is configured to receive an assignment of time slots from the second base station and to exchange data with the second base station in the assigned time slots.

7. The apparatus of claim 6, wherein the at least one processor is configured to exchange data in protocol data units (PDUs) sent in the assigned time slots.

8. The apparatus of claim 1, wherein the at least one processor is configured to detect one or more first base stations in the wireless communication network based on one or more pilots transmitted by the one or more first base stations on a downlink frequency channel, and to detect one or more second base stations in piconets based on one or more beacons transmitted by the one or more second base stations on an uplink frequency channel.

9. The apparatus of claim 1, wherein the at least one processor is configured to detect one or more first base stations in the wireless communication network and, if no first base stations are detected, to detect one or more second base stations in piconets.

10. The apparatus of claim 1, wherein the at least one processor is configured to detect other first base stations in the wireless communication network, to detect other second base stations in nearby piconets, and to send information on detected first and second base stations to the first base station in the wireless communication network.

11. The apparatus of claim 1, wherein the at least one processor is configured to detect other first base stations in the wireless communication network, to detect other second base stations in nearby piconets, and to send information on detected first and second base stations to the second base station in the piconet.

12. The apparatus of claim 1, further comprising:

a transceiver comprising a transmit path for sending data to the first and second base stations, a first receive path for receiving data from the first base station, and a second receive-path for receiving data from the second base station.

13. The apparatus of claim 1, wherein the communication with the wireless communication network via the first base station and the communication with the wireless communication network via the second base station comprise communication with a common network entity in the wireless communication network.

14. The apparatus of claim 13, wherein the common network entity is part of a core network subsystem of the wireless communication network.

15. The apparatus of claim 13, wherein the common network entity is part of a wireless access gateway (WAG) / packet data gateway (PDG) of the wireless communication network.

16. The apparatus of claim 15, further comprising:

means for registering with the wireless communication network; and

means for receiving paging messages from the wireless communication network via the second base station.

17. The apparatus of claim 1, wherein the monitoring for signals from the first base station on the FDD downlink frequency is performed in at least one time slot assigned to the apparatus for communicating via the second base station on the FDD uplink frequency.

21. The apparatus of claim 1, wherein communication with the wireless communication network via the second base station occurs outside of a handover procedure.

18. A method comprising:

performing data processing for communication with a wireless communication network via a first base station in the wireless communication network using frequency division duplexing (FDD) over respective uplink and downlink frequency channels;

performing operations for associating with a second base station in a pico network (piconet);

performing, after completing the association, data processing for communication with the wireless communication network via the second base station using time division duplexing (TDD), wherein TDD communications comprise uplink and downlink communications that both share the same frequency channel as the FDD uplink frequency channel for the first base station; and

monitoring for signals from the first base station on the FDD downlink frequency while communicating via the second base station on the FDD uplink frequency using TDD.

19. The method of claim 18, further comprising:

registering with the wireless communication network; and

receiving paging messages from the wireless communication network via the second base station.

20. An apparatus comprising:

means for performing data processing for communication with a wireless communication network via a first base station in the wireless communication network using frequency division duplexing (FDD) over respective uplink and downlink frequency channels;

means for performing operations for associating with a second base station in a pico network (piconet);

means for performing data processing for communication with the wireless communication network via the second base station using time division duplexing (TDD), wherein TDD communications comprise uplink and downlink communications that both share the same frequency channel as the FDD uplink frequency channel for the first base station; and

means for monitoring for signals from the first base station on the FDD downlink frequency while communicating via the second base station on the FDD uplink frequency using TDD.

22. A non-transitory computer-readable medium including instructions stored thereon, comprising:

a first instruction set for controlling communication with a wireless communication network via a first base station in the wireless communication network using frequency division duplexing (FDD) over respective uplink and downlink frequency channels;

a second instruction set for controlling operations for associating with a second base station in a pico network (piconet);

a third instruction set for controlling communication with the wireless communication network via the second base station using time division duplexing (TDD), wherein TDD communications comprise uplink and downlink communications that both share the same frequency channel as the FDD uplink frequency channel for the first base station; and

a fourth instruction set for monitoring for signals from the first base station on the FDD downlink frequency while communicating via the second base station on the FDD uplink frequency using TDD.