BANDWIDTH REQUEST METHOD AND BANDWIDTH ALLOCATION METHOD IN BROADBAND WIRELESS ACCESS SYSTEM

• US 20110149897A1
• Filed: 07/31/2009
• Published: 06/23/2011
• Est. Priority Date: 07/31/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Ihm, Bin Chul, Youn, Ae Ran
• Granted Patent: US 8,553,633 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• 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 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network

Abstract

The present invention deals with a method for requesting and allocating an uplink resource efficiently in a broadband wireless access system. The method of the present invention wherein a terminal requests bandwidth in a broadband wireless access system may include a step in which a bandwidth request header (BR header), including a bandwidth request message and a high-speed access message, is transmitted to a base station; a step in which uplink grant (UL grant) information corresponding to the information included in said bandwidth request message and said high-speed access message is received from said base station; and a step in which the uplink resource indicated by said uplink grant information is used to transmit data to said base station.

Claims

1-15. -15. (canceled)

16. A method of a mobile station for requesting a bandwidth in a broadband wireless access system, the method comprising:

transmitting a bandwidth request preamble sequence (BR preamble sequence) and a quick access message to a base station;

receiving uplink grant (UL grant) information corresponding to information included the quick access message from the base station; and

transmitting data to the base station by using an uplink resource indicated by the uplink grant information,

wherein the quick access message comprises a mobile station identifier for identifying (or addressing) the mobile station and information representing quality of service (QoS) level and a size of the requested bandwidth.

17. The method of claim 16, further comprising receiving allocation information of bandwidth request channels corresponding to an uplink resource for transmitting the BR preamble sequence and the quick access message from the base station through a predetermined broadcast channel,

wherein the BR preamble sequence and the quick access message are transmitted through randomly selected one of the bandwidth request channels.

18. The method of claim 17, wherein the transmission of the BR preamble sequence is performed by using a contention-based method.

19. The method of claim 17, wherein the predetermined broadcast channel comprises a secondary super-frame header (S-SFH).

20. The method of claim 17, further comprising receiving a response signal in response to the BR preamble sequence from the base station.

21. The method of claim 16, wherein the information representing quality of service (QoS) level and a size of the requested bandwidth is included in the quick access message in the form of a predetermined index.

22. The method of claim 16, wherein the information representing quality of service (QoS) level and a size of the requested bandwidth is negotiated through any one of a Dynamic Service Change (DSC) procedure or a Dynamic Service Addition (DSA) procedure.

23. A method of a base station for allocating a bandwidth to a mobile station in a broadband wireless access system, the method comprising:

receiving a bandwidth request preamble sequence (BR preamble sequence) and a quick access message from the mobile station;

transmitting uplink grant (UL grant) information corresponding to information included the quick access message to the mobile station; and

receiving data from the mobile station through an uplink resource indicated by the uplink grant information,

wherein the quick access message comprises a mobile station identifier for identifying (or addressing) the mobile station and information representing quality of service (QoS) level and a size of the requested bandwidth.

24. The method of claim 23, further comprising broadcasting allocation information of bandwidth request channels corresponding to an uplink resource for receiving the BR preamble sequence through a predetermined broadcast channel,

wherein the BR preamble sequence and the quick access message are received through one of the bandwidth request channels.

25. The method of claim 24, wherein the reception of the BR preamble sequence is performed by using a contention-based method.

26. The method of claim 24, wherein the predetermined broadcast channel corresponds to a secondary super-frame header (S-SFH).

27. The method of claim 23, wherein the information representing quality of service (QoS) level and a size of the requested bandwidth is included in the quick access message in the form of a predetermined index.

28. The method of claim 23, wherein the information representing quality of service (QoS) level and a size of the requested bandwidth is negotiated through any one of a Dynamic Service Change (DSC) procedure or a Dynamic Service Addition (DSA) procedure.

29. A mobile station for requesting a bandwidth in a broadband wireless access system, the mobile station comprising:

a processor;

a receiving module;

a transmitting module; and

an antenna configured to transmit radio signals received from an external source to the receiving module and to transmit radio signals being delivered from the transmitting module to an external source,

wherein the receiving module performs demodulating and decoding on the wireless signals being delivered from the antenna, and wherein the transmitting module performs modulating and encoding on the data being delivered from the processor, and

wherein the processor controls a bandwidth request preamble sequence (BR preamble sequence) and a quick access message to be transmitted to a base station through the transmitting module, controls uplink grant (UL grant) information corresponding to information included the quick access message to be received from the base station through the receiving module, and controls data to be transmitted to the base station by using an uplink resource indicated by the uplink grant information, and

wherein the quick access message comprises a mobile station identifier for identifying (or addressing) the mobile station and information representing quality of service (QoS) level and a size of the requested bandwidth.

30. The mobile station of claim 29, wherein the controller controls allocation information of bandwidth request channels corresponding to an uplink resource for transmitting the BR preamble sequence to be received from the base station through a predetermined broadcast channel,

wherein the BR preamble sequence and the quick access message are transmitted through randomly selected one of the bandwidth request channels.