METHOD AND APPARATUS OF TRANSMITTING SCHEDULING REQUEST IN WIRELESS COMMUNICATION SYSTEM

• US 20100040005A1
• Filed: 08/06/2009
• Published: 02/18/2010
• Est. Priority Date: 08/12/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Ki Jun, Kim, Bong Hoe, Ahn, Joon Kui, Kim, Hak-seong, Yun, Young Woo, Lee, Dae Won
• Granted Patent: US 8,374,076 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04J 11/0069 Cell search, i.e. determining cell identity [cell-ID] design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 8/24 Transfer of terminal data

Abstract

A method and an apparatus of transmitting scheduling request (SR) in a wireless communication system are provided. The method includes configuring a physical uplink control channel (PUCCH) for a SR in a subframe, the subframe comprising a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols, wherein one SC-FDMA symbol on the PUCCH is punctured and transmitting the SR on the PUCCH in the subframe.

Claims

1. A method of transmitting scheduling request (SR) in a wireless communication system, carried in a user equipment, the method comprising:

configuring a physical uplink control channel (PUCCH) for a SR in a subframe, the subframe comprising a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols, wherein one SC-FDMA symbol on the PUCCH is punctured; and

transmitting the SR on the PUCCH in the subframe.

2. The method of claim 1, further comprising:

transmitting a sounding reference signal (SRS) in the subframe, wherein the punctured SC-FDMA symbol is corresponding to a location on which the SRS is transmitted.

3. The method of claim 1, further comprising:

receiving a simultaneous transmission indicator from a base station (BS), the simultaneous transmission indicator indicating whether the SC-FDMA symbol on the PUCCH is punctured.

4. The method of claim 1, further comprising:

receiving a specific subframe configuration parameter from an BS, the specific subframe configuration parameter indicating the subframe in which the SC-FDMA symbol on the PUCCH is punctured.

5. The method of claim 1, wherein the punctured SC-FDMA symbol is the last SC-FDMA symbol of the subframe.

6. The method of claim 1, wherein the subframe is composed of two slots, and the PUCCH uses one resource block in each of the two slots in the subframe.

7. The method of claim 6, wherein each of resource blocks used for the PUCCH in the each of the two slots is different in a frequency domain.

8. The method of claim 6, wherein the SR is spread by orthogonal sequences with different lengths in the each of the two slots in the subframe.

9. The method of claim 8, wherein the length of the first orthogonal sequence for one slot including the punctured SC-FDMA symbol is shorter than that of the second orthogonal sequence for another slot.

10. A user equipment comprising:

a radio frequency (RF) unit transmitting and/or receiving a radio signal; and

a processor coupled with the RF unit and configured to;

configure a PUCCH for a SR in a subframe, the subframe comprising a plurality of SC-FDMA symbols, wherein one SC-FDMA symbol on the PUCCH is punctured; and

transmit the SR on the PUCCH in the subframe.

11. A method of requesting uplink resource in a wireless communication system, carried in a user equipment, the method comprising:

transmitting a SR in a subframe, the subframe comprising a first slot and a second slot, each of the first slot and the second slot comprising a plurality of SC-FDMA symbols, wherein a SC-FDMA symbol in the second slot is punctured so that a SRS is transmitted in the punctured SC-FDMA symbol; and

receiving a uplink resource as a response of the SR.

12. The method of claim 11, wherein the first slot and the second slot are consecutive.