Multi-carrier operation for wireless systems

• US 9,100,964 B2
• Filed: 04/28/2014
• Issued: 08/04/2015
• Est. Priority Date: 05/08/2002
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Fong, Mo-Han, Yu, Dong-Sheng, Nikopourdeilami, Hosein
• Primary Examiner(s): Hamza, Faruk
• Assistant Examiner(s): LO, DIANE LEE
• Application Number:
  US14/263,623
• Publication Number:
  US 20140233502A1
• Time in Patent Office: 463 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 27/26 Systems using multi-frequency codes H04L27/32 takes precedence
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 56/0005 synchronizing of arrival of multiple uplinks
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

The present disclosure generally relates to an uplink control signal design for wireless system. One example method of a subscriber station (SS) includes performing network entry in a multi-carrier wireless environment using a primary carrier, receiving timing information corresponding to the primary carrier, receiving a first control signaling via the primary carrier, the first control signaling assigning at least one secondary carrier, transmitting uplink data via the secondary carrier using an uplink transmission timing of the secondary carrier, the uplink transmission timing of the secondary carrier being assigned the same as an uplink transmission timing of the primary carrier, and determining an adjustment of the uplink transmission timing or frequency of the secondary carrier.

Claims

1. A method of a subscriber station (SS) comprising:

performing network entry in a multi-carrier wireless environment using a primary carrier;

receiving timing information corresponding to the primary carrier;

receiving a first control signaling via the primary carrier, the first control signaling assigning a first secondary carrier;

transmitting uplink data via the first secondary carrier using an uplink transmission timing of the first secondary carrier, the uplink transmission timing of the first secondary carrier being the same as an uplink transmission timing of the primary carrier;

receiving a second control signaling via the primary carrier, the second control signaling assigning a second secondary carrier without modifying the primary carrier; and

transmitting uplink data via the second secondary carrier using an uplink transmission timing of the second secondary carrier, the uplink transmission timing of the second secondary carrier being the same as an uplink transmission timing of the primary carrier.

2. The method of claim 1, wherein the primary carrier corresponds to the carrier used for network entry.

3. The method of claim 1, wherein the primary carrier is used by the SS for synchronization.

4. The method of claim 1, further comprising receiving a third control signaling via the primary carrier, the third control signaling changing the primary carrier.

5. The method of claim 1, wherein the primary carrier carries voice information.

6. The method of claim 5, wherein the primary carrier carries real-time services to a user of the SS.

7. The method of claim 6, wherein the first secondary carrier provides data services to a user of the SS.

8. The method of claim 7, wherein the primary carrier is code division multiplexed.

9. The method of claim 8, wherein the first secondary carrier is time division multiplexed.

10. The method of claim 1, wherein the SS is responsive to a control signal sent from a base station (BS) over the primary carrier to trigger an UL transmission on the first secondary carrier.

11. An apparatus comprising:

a transceiver; and

a processor configured to;

perform network entry of a subscriber station (SS) in a multi-carrier wireless environment using a primary carrier;

receive timing information corresponding to the primary carrier;

receive a first control signaling via the primary carrier, the first control signaling assigning a first secondary carrier;

transmit uplink data via the first secondary carrier using an uplink transmission timing of the first secondary carrier, the uplink transmission timing of the first secondary carrier being the same as an uplink transmission timing of the primary carrier;

receive a second control signaling via the primary carrier, the second control signaling assigning a second secondary carrier without modifying the primary carrier; and

transmit uplink data via the second secondary carrier using an uplink transmission timing of the second secondary carrier, the uplink transmission timing of the second secondary carrier being the same as an uplink transmission timing of the primary carrier.

12. The apparatus of claim 11, wherein the primary carrier corresponds to the carrier used for network entry.

13. The apparatus of claim 11, wherein the primary carrier is used by the SS for synchronization.

14. The apparatus of claim 11, the processor further configured to receive a third control signaling via the primary carrier, the third control signaling changing the primary carrier.

15. The apparatus of claim 11, wherein the primary carrier carries voice information.

16. The apparatus of claim 15, wherein the primary carrier carries real-time services to a user of the SS.

17. The apparatus of claim 16, wherein the first secondary carrier provides data services to a user of the SS.

18. The apparatus of claim 17, wherein the primary carrier is code division multiplexed.

19. The apparatus of claim 18, wherein the first secondary carrier is time division multiplexed.

20. The apparatus of claim 11, wherein the SS is responsive to a control signal sent from a base station (BS) over the primary carrier to trigger an UL transmission on the first secondary carrier.

21. A system comprising:

a base station; and

a subscriber station (SS) configured to;

perform network entry in a multi-carrier wireless environment using a primary carrier;

receive, from the base station, timing information corresponding to the primary carrier;

receive, from the base station, a first control signaling via the primary carrier, the first control signaling assigning a first secondary carrier; and

transmit, to the base station, uplink data via the first secondary carrier using an uplink transmission timing of the first secondary carrier, the uplink transmission timing of the first secondary carrier being the same as an uplink transmission timing of the primary carrier;

wherein the base station is configured to;

evaluate a suitability of the first secondary carrier periodically; and

transmit, based on the evaluation, to the SS, a second control signaling via the primary carrier, the second control signaling assigning a second secondary carrier without modifying the primary carrier; and

wherein the SS is further configured to;

receive, from the base station, the second control signaling via the primary carrier; and

transmit, to the base station, uplink data via the second secondary carrier using an uplink transmission timing of the second secondary carrier, the uplink transmission timing of the second secondary carrier being the same as an uplink transmission timing of the primary carrier.

22. The system of claim 21, wherein the base station is further configured to determine that a change of the first secondary carrier is needed based on the evaluation.