Method and apparatus for allocating uplink resources in beamforming-based wireless communication system

1. A method for requesting uplink resource allocation in a beamforming-based wireless communication system, the method comprising:

selecting a resource request code and a resource request channel for requesting uplink resource allocation, wherein at least one of the resource request code and the resource request channel is mapped to at least one of a best base station (BS) receive beam and a best BS transmit beam determined for communications with a BS;

transmitting, by a mobile station (MS), the resource request code to the BS over the resource request channel;

receiving a resource allocation message indicating an uplink resource for transmission of a resource request message from the BS in response to transmitting the resource request code; and

transmitting the resource request message based on the resource allocation message.

2. The method of claim 1 , wherein the selecting of the resource request code comprises:

determining a resource request code set corresponding to the best BS receive beam among a plurality of resource request code sets that correspond to a plurality of BS receive beams of the BS, respectively; and

selecting the resource request code from the determined resource request code set.

3. The method of claim 1 , wherein the selecting of the resource request channel comprises:

selecting a channel region corresponding to the best BS transmit beam from a predetermined resource area including a plurality of channel regions that correspond to a plurality of BS transmit beams of the BS, respectively; and

determining the resource request channel of the selected channel region.

4. The method of claim 1 , wherein the selecting of the resource request code comprises:

determining a resource request code set corresponding to the best BS transmit beam among a plurality of resource request code sets that correspond to a plurality of BS transmit beams of the BS, respectively; and

randomly selecting the resource request code from the determined resource request code set.

5. The method of claim 1 , wherein the selecting of the resource request channel comprises:

selecting a channel region corresponding to the best BS receive beam from a predetermined resource area including a plurality of channel regions that correspond to a plurality of BS receive beams of the BS, respectively; and

determining the resource request channel of the selected channel region.

6. The method of claim 1 , wherein the selecting of the resource request code comprises:

selecting a resource request code of a plurality of resource request codes; and

encoding information on at least one of the best BS receive beam and the best BS transmit beam within the selected resource request code.

7. The method of claim 1 , wherein the resource allocation message is transmitted by the BS using the best BS transmit beam.

8. The method of claim 1 , wherein the resource request message is received by the BS using the best BS receive beam.

9. A method for allocating uplink resources in a beamforming-based wireless communication system, the method comprising:

receiving, by a base station (BS) a resource request code from a mobile station (MS) over a resource request channel, wherein at least one of the resource request code and the resource request channel is mapped to at least one of a best BS receive beam and a best BS transmit beam determined for communications with the MS;

determining at least one of the best receive beam and the best BS transmit beam based on at least one of the resource request code and the resource request channel;

transmitting a resource allocation message indicating an uplink resource determined based on the best BS receive beam for transmission of a resource request message; and

receiving, from the MS, the resource request message in response to transmitting the resource allocation message.

10. The method of claim 9 , wherein the resource request code is selected from a resource request code set corresponding to the best BS receive beam among a plurality of resource request code sets that correspond to a plurality of BS receive beams of the BS, respectively.

11. The method of claim 9 , wherein the resource request channel is determined based on a channel region corresponding to the best BS transmit beam selected from a predetermined resource area including a plurality of channel regions that correspond to a plurality of BS transmit beams of the BS, respectively.

12. The method of claim 9 , wherein the resource request code is randomly selected from a resource request code set corresponding to the best BS transmit beam among a plurality of resource request code sets that correspond to a plurality of BS transmit beams of the BS, respectively.

13. The method of claim 9 , wherein the resource request channel is determined based on a channel region corresponding to the best BS receive beam selected from a predetermined resource area including a plurality of channel regions that correspond to a plurality of BS receive beams of the BS, respectively.

14. The method of claim 9 , wherein the resource request code includes encoded information on at least one of the best BS receive beam and the best BS transmit beam.

15. The method of claim 9 , wherein the resource allocation message is transmitted by the BS using the best BS transmit beam.

16. The method of claim 9 , wherein the resource allocation message is received by the BS using the best BS receive beam.

17. A mobile station (MS) for requesting uplink (UL) resource allocation in a beamforming-based wireless communication system, the MS comprising:

a transceiver; and

a controller for controlling the transceiver,

wherein the controller is configured to select a resource request code and a resource request channel for requesting uplink resource allocation,

wherein at least one of the resource request code and the resource request channel is mapped to at least one of a best base station (BS) receive beam and a best BS transmit beam determined for communications with a BS,

wherein the transceiver is configured to transmit the resource request code to the BS over the resource request channel,

wherein the transceiver is configured to receive a resource allocation message indicating an uplink resource for transmission of a resource request message from the BS in response to transmitting the resource request code, and

wherein the transceiver is configured to transmit the resource request message based on the resource allocation message.

18. The MS of claim 17 , wherein the controller is further configured to determine a resource request code set corresponding to the best BS receive beam among a plurality of resource request code sets that correspond to a plurality of BS receive beams of the BS, respectively, and to select the resource request code from the determined resource request code set.

19. The MS of claim 17 , wherein the controller is further configured to select a channel region corresponding to the best BS transmit beam from a predetermined resource area including a plurality of channel regions that correspond to a plurality of BS transmit beams of the BS, respectively, and to determine the resource request channel of the selected channel region.

20. The MS of claim 17 , wherein the controller is further configured to determine a resource request code set corresponding to the best BS transmit beam among a plurality of BR resource request code sets that correspond to a plurality of BS transmit beams of the BS, respectively, and to randomly select the resource request code from the determined resource request code set.

21. The MS of claim 17 , wherein the controller is further configured to select a channel region corresponding to the best BS receive beam from a predetermined resource area including a plurality of channel regions that correspond to a plurality of BS receive beams of the BS, respectively, and to determine the resource request channel of the selected channel region.

22. The MS of claim 17 , wherein the controller is further configured to select a resource request code of a plurality of resource request codes, and to encode information on at least one of the best BS receive beam and the best BS transmit beam within the selected resource request code.

23. The MS of claim 17 , wherein resource allocation message is transmitted by the BS using the best BS transmit beam.

24. The MS of claim 17 , wherein the resource request message is received by the BS using the best BS receive beam.

25. A base station (BS) for allocating uplink (UL) resources in a beamforming-based wireless communication system, the BS comprising:

a transceiver; and

a controller for controlling the transceiver,

wherein the transceiver is configured to receive a resource request code from a mobile station (MS) over a resource request channel, wherein at least one of the resource request code and the resource request channel is mapped to at least one of a best BS receive beam and a best BS transmit beam determined for communications with the MS,

wherein the controller is configured to determine at least one of the best BS receive beam and the best BS transmit beam based on at least one of the resource request code and the resource request channel,

wherein the transceiver is configured to send a resource allocation message indicating an uplink resource determined based on the best BS receive beam for transmission of a resource request message, and

wherein the transceiver is configured to receive, from the MS, the resource request message in response to transmitting the resource allocation message.

26. The BS of claim 25 , wherein the resource request code is selected from a resource request code set corresponding to the best BS receive beam among a plurality of resource request code sets that correspond to a plurality of BS receive beams of the BS, respectively.

27. The BS of claim 25 , wherein the resource request channel is determined based on a channel region corresponding to the best BS transmit beam selected from a predetermined resource area including a plurality of channel regions that correspond to a plurality of BS transmit beams of the BS, respectively.

28. The BS of claim 25 , wherein the resource request code is randomly selected from a resource request code set corresponding to the best BS transmit beam among a plurality of resource request code sets that correspond to a plurality of BS transmit beams of the BS, respectively.

29. The BS of claim 25 , wherein the resource request channel is determined based on a channel region corresponding to the best BS receive beam selected from a resource request resource area including a plurality of channel regions that correspond to a plurality of BS receive beams of the BS, respectively.

30. The BS of claim 25 , wherein the resource request code includes encoded information on at least one of the best BS receive beam and the best BS transmit beam.

31. The BS of claim 25 , wherein the resource allocation message is transmitted by the BS using the best BS transmit beam.

32. The BS of claim 25 , wherein the resource request message is received by the BS using the best BS receive beam.