METHOD FOR TRANSMITTING DATA ACCORDING TO DYNAMIC RESOURCE REQUEST

• US 20110075628A1
• Filed: 05/26/2009
• Published: 03/31/2011
• Est. Priority Date: 05/26/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chun, Jin Young, Cho, Hee Jeong
• Granted Patent: US 8,498,257 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

A method for transmitting uplink data according to a dynamic resource request is disclosed. The method includes confirming, at a mobile station, whether a service type for a bandwidth request is sensitive to delay, if the service type is not sensitive to delay, shifting a phase of a fast feedback channel and transmitting the phase-shifted fast feedback channel, if the service type is sensitive to delay or if a bandwidth request grant message corresponding to the phase-shifted fast feedback channel is received from a base station, transmitting a bandwidth request information corresponding to the service type to the base station, and upon receiving an uplink grant message for an uplink resource according to the bandwidth request information from the base station, transmitting data though the uplink resource. As a result, collision does not occur during a resource request, quality of service (QoS) of a real-time traffic sensitive to delay can be satisfied, an uplink allocation request procedure is dynamically changed according to a service type, thus reducing message overhead, and a resource can be efficiently used according to a characteristic of a service provided to the mobile station.

Claims

1. A method for transmitting uplink data according to a dynamic resource request by requesting an uplink bandwidth by a contention-free request scheme in a mobile station, the method comprising:

confirming whether a service type for a bandwidth request is sensitive to delay;

if the service type is not sensitive to delay, shifting a phase of a fast feedback channel and transmitting the phase-shifted fast feedback channel;

if the service type is sensitive to delay or if a bandwidth request grant message corresponding to the phase-shifted fast feedback channel is received from a base station, transmitting bandwidth request information corresponding to the service type to the base station; and

upon receiving an uplink grant message for an uplink resource according to the bandwidth request information from the base station, transmitting data through the uplink resource.

2. The method according to claim 1, wherein the confirmation of whether the service type is sensitive to delay includes confirming a connection identifier (CID) allocated to the mobile station.

3. The method according to claim 1, wherein the service type sensitive to delay includes a real-time polling service (rtPS).

4. The method according to claim 1, wherein the shifting of the phase of the fast feedback channel and transmitting of the phase-shifted fast feedback channel includes multiplexing a radio resource allocation request signal with the phase-shifted fast feedback channel.

5. The method according to claim 1, wherein the bandwidth request information includes any one of codewords mapped to a plurality of bandwidth request profiles according to the service type.

6. The method according to claim 5, wherein the codewords are mapped to at least one profile selected according to traffic priority among predetermined bandwidth request profiles.

7. The method according to claim 5, wherein the codewords include a separator bit for distinguishing between a bandwidth request and other purposes.

8. The method according to claim 1, further comprising:

notifying the base station of a codeword transmission interval for a bandwidth request through a dynamic service addition request message,

wherein the transmitting of the bandwidth request information to the base station includes transmitting, to the base station through the fast feedback channel, any one of codewords mapped to a plurality of bandwidth request profiles according to the service type every notification interval.

9. The method according to claim 8, wherein the dynamic service addition request message further includes either an offset or a start frame number of a start position for transmitting the codeword.

10. The method according to claim 8, further comprising, if the codeword transmission interval for the bandwidth request is changed, negotiating the changed interval with the base station through a dynamic service change request message.

11. A method for transmitting uplink data according to a dynamic resource request by requesting an uplink bandwidth by a contention-free request scheme in a mobile station, the method comprising:

confirming whether a service type for a bandwidth request is sensitive to delay;

if the service type is not sensitive to delay, requesting a base station to allocate a radio resource using a codeword for a bandwidth request of a fast feedback channel;

if the service type is sensitive to delay or if a bandwidth request grant message is received from the base station in correspondence to the radio resource allocation request using the codeword for the bandwidth request, transmitting bandwidth request information corresponding to the service type to the base station; and

upon receiving an uplink grant message for an uplink resource according to the bandwidth request information from the base station, transmitting data through the uplink resource.

12. The method according to claim 11, wherein the bandwidth request information includes any one of codewords mapped to a plurality of bandwidth request profiles according to the service type.

13. A method for transmitting uplink data according to a dynamic resource request by requesting an uplink bandwidth by a contention-free request scheme in a mobile station, the method comprising:

confirming whether a service type for a bandwidth request is sensitive to delay;

if the service type is sensitive to delay, transmitting bandwidth request information corresponding to the service type to a base station, and if the service type is not sensitive to delay, shifting a phase of a fast feedback channel and transmitting the phase-shifted fast feedback channel;

upon receiving a bandwidth request grant message corresponding to the phase-shifted fast feedback channel from a base station, transmitting bandwidth request information using a single codeword to the base station; and

upon receiving an uplink grant message for an uplink resource according to the bandwidth request information from the base station, transmitting data through the uplink resource.

14. A method for transmitting uplink data according to a dynamic resource request by requesting an uplink bandwidth by a contention-free request scheme in a mobile station, the method comprising:

confirming whether a service type for a bandwidth request is sensitive to delay;

if the service type is sensitive to delay, transmitting bandwidth request information corresponding to the service type to a base station, and if the service type is not sensitive to delay, requesting the base station to allocate a radio resource using a codeword for a bandwidth request of a fast feedback channel;

upon receiving a bandwidth request grant message corresponding to the radio resource allocation request using the codeword for the bandwidth request from the base station, transmitting bandwidth request information using a single codeword to the base station; and

upon receiving an uplink grant message for an uplink resource according to the bandwidth request information from the base station, transmitting data through the uplink resource.