Systems and methods for communicating between base stations and wireless stations

• US 8,081,600 B2
• Filed: 07/29/2005
• Issued: 12/20/2011
• Est. Priority Date: 07/29/2005
• Status: Expired due to Fees

• Current Assignee: Nextel Communications (Deutsche Telekom AG)
• Original Assignee: Nextel Communications (Deutsche Telekom AG)
• Inventors: Afrashteh, Alireza, Olfat, Masoud, Hyslop, Douglas A., Gangadhar, Rajesh M.
• Primary Examiner(s): Ngo, Ricky
• Assistant Examiner(s): Oveissi, David
• Application Number:
  US11/192,074
• Publication Number:
  US 20070025290A1
• Time in Patent Office: 2,335 Days
• Field of Search: 370/277, 370/278, 370/280, 370/281, 370/294, 370/295, 370/478, 370/330, 375/132, 455/552
• US Class Current: 370/330
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS

Abstract

Systems and methods for communicating between a wireless station and a base station are provided. A base station can allocate both a TDD channel and an FDD channel pair for communicating with a wireless station. The base station can transmit and receive unicast messages using the time slots of the TDD channel or can transmit multicast messages over all time slots of the TDD channel.

Claims

1. A method for communicating between a base station and a wireless station, comprising:

allocating, by the base station, a time division duplex channel to the wireless station;

allocating, by the base station, a frequency division duplex channel pair to the wireless station; and

transmitting from the base station to the wireless station over a downlink time slot of the time division duplex channel while simultaneously transmitting from the base station to the wireless station or receiving by the base station from the wireless station over a channel of the frequency division duplex channel pair, wherein the time division duplex channel is distinct from the frequency division duplex channel pair.

2. The method of claim 1, further comprising:

receiving a wireless resource request from the wireless station, wherein the allocations are performed in response to the request.

3. The method of claim 2, further comprising:

estimating an amount of wireless resources for satisfying the wireless resource request.

4. The method of claim 1, further comprising:

receiving from the wireless station over an uplink time slot of the time division duplex channel while simultaneously transmitting to the wireless station or receiving from the wireless station over another channel of the frequency division duplex channel pair.

5. A method for communicating between a base station and a wireless station, comprising:

receiving, by the wireless station, a time division duplex channel allocation from the base station;

receiving, by the wireless station, a frequency division duplex channel pair allocation from the base station; and

transmitting, by the wireless station, to the base station over an uplink time slot of the time division duplex channel while simultaneously transmitting to the base station or receiving from the base station over a channel of the frequency division duplex channel pair, wherein the time division duplex channel is distinct from the frequency division duplex channel pair.

6. The method of claim 5, further comprising:

transmitting, by the wireless station, a wireless resource request to the base station, wherein the allocations are performed in response to the request.

7. The method of claim 6, further comprising:

estimating an amount of wireless resources for satisfying the wireless resource request, wherein the estimate is included in the transmitted wireless resource request.

8. The method of claim 5, further comprising:

receiving, by the wireless station, from the base station over a downlink time slot of the time division duplex channel while simultaneously transmitting to the base station or receiving from the base station over another channel of the frequency division duplex channel pair.

9. A base station configured to transmit to a wireless station over a downlink time slot of a time division duplex channel while simultaneously transmitting to the wireless station over a channel of a frequency division duplex channel pair.

10. The base station of claim 9, wherein the base station is further configured to receive from the wireless station over an uplink time slot of the time division duplex channel while simultaneously transmitting to the wireless station or receiving from the wireless station over another channel of the frequency division duplex channel pair.

11. The base station of claim 9, wherein multicast messages are transmitted over the downlink time slot of the time division duplex channel.

12. The base station of claim 11, wherein unicast messages transmitted or received over the channel of frequency division duplex pair.

13. The base station of claim 9, wherein the base station is further configured to transmit to the wireless station over all time slots of the time division duplex channel while simultaneously transmitting to the wireless station or receiving from the wireless station over a frequency division duplex channel pair.

14. A wireless station configured to receive from a base station over a downlink time slot of a time division duplex channel while simultaneously receiving from the base station over a channel of a frequency division duplex channel pair.

15. The wireless station of claim 14, wherein the wireless station is further configured to transmit to the base station over an uplink time slot of the time division duplex channel while simultaneously transmitting to the base station or receiving from the base station over another channel of the frequency division duplex channel pair.

16. The wireless station of claim 14, wherein messages received over the downlink time slot of the time division duplex channel are multicast messages.

17. The wireless station of claim 16, wherein messages transmitted or received over the channel of the frequency division duplex pair are unicast messages.

18. The wireless station of claim 14, wherein the wireless station is further configured to receive from the base station over all time slots of the time division duplex channel while simultaneously transmitting to the base station or receiving from the base station over a frequency division duplex channel pair.

19. A method for communicating between a base station and a wireless station, comprising:

allocating, by the base station, a time division duplex channel to at least the wireless station for multicast messages;

allocating, by the base station, a frequency division duplex channel pair to the wireless station for unicast messages; and

transmitting from the base station to the wireless station over a downlink time slot of the time division duplex channel while simultaneously transmitting from the base station to the wireless station or receiving by the base station from the wireless station over a channel of the frequency division duplex channel pair, wherein the time division duplex channel is distinct from the frequency division duplex channel pair.

20. The method of claim 19, further comprising:

transmitting to the wireless station over an uplink time slot of the time division duplex channel while simultaneously transmitting to the wireless station or receiving from the wireless station over another channel of the frequency division duplex channel pair.

21. The method of claim 19, further comprising:

receiving a wireless resource request from the wireless station, wherein the allocations are performed in response to the request.

22. A method for communicating between a base station and a wireless station, comprising:

receiving, by the wireless station, a time division duplex channel allocation from the base station for multicast messages;

receiving, by the wireless station, a frequency division duplex channel pair allocation from the base station for unicast messages; and

receiving, by the wireless station, from the base station over a downlink time slot of the time division duplex channel while simultaneously transmitting to the base station or receiving from the base station over a channel of the frequency division duplex channel pair, wherein the time division duplex channel is distinct from the frequency division duplex channel pair.

23. The method of claim 22, further comprising:

receiving, by the wireless station, from the base station over an uplink time slot of the time division duplex channel while simultaneously transmitting to the base station or receiving from the base station over another channel of the frequency division duplex channel pair.

24. The method of claim 22, further comprising:

transmitting, by the wireless station, a wireless resource request to the base station, wherein the channels are allocated in response to the request.