METHOD OF TRANSMITTING UPLINK CONTROL SIGNALS IN WIRELESS COMMUNICATION SYSTEM

• US 20130188587A1
• Filed: 03/08/2013
• Published: 07/25/2013
• Est. Priority Date: 08/08/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KWAK, Jin Sam, HAN, Seung Hee, NOH, Min Seok, KWON, Yeong Hyeon, LEE, Hyun Woo, KIM, Dong Cheol, CHUNG, Jae Hoon, PARK, Hong Won
• Granted Patent: US 8,891,560 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/535 based on resource usage policies

Abstract

A method and device for transmitting uplink control signals in a wireless communication system, the method including: reserving a preassigned scheduling request (SR) physical uplink control channel (PUCCH) resource used for transmission of a SR; determining a frequency domain sequence and an orthogonal sequence based on the preassigned SR PUCCH resource; spreading an ACK/NACK for Hybrid Automatic Repeat Request (HARQ) with the frequency domain sequence and the orthogonal sequence to generate a mapped sequence; and transmitting the mapped sequence.

Claims

1. A method of transmitting uplink control signals in a wireless communication system using at least one subframe comprising two slots, each slot including a plurality of symbols, the wireless communication system configured to transmit a scheduling request (SR) via an assigned SR uplink control channel resource and to transmit an ACK/NACK via an assigned ACK/NACK uplink control channel resource, the method comprising:

determining that an ACK/NACK and a SR are to be transmitted in a subframe, and

transmitting the ACK/NACK and the SR in the subframe via an uplink control channel resource if it is determined that the ACK/NACK and the SR are to be transmitted in the subframe,

wherein the uplink control channel resource for a positive SR transmission is the assigned SR uplink control channel resource.

2. The method of claim 1, wherein the uplink control channel resource for a negative SR transmission is the assigned ACK/NACK uplink control channel resource.

3. The method of claim 1, wherein the step of transmitting the ACK/NACK and the SR in the subframe, for the positive SR transmission, comprises:

determining an orthogonal sequence based on the assigned SR uplink control channel resource;

spreading the ACK/NACK with the orthogonal sequence to generate a mapped sequence; and

transmitting the mapped sequence in the subframe.

4. The method of claim 1, wherein the step of transmitting the ACK/NACK and the SR in the subframe, for the positive SR transmission, comprises:

determining a frequency domain sequence and an orthogonal sequence based on the assigned SR uplink control channel resource;

spreading the ACK/NACK with the frequency domain sequence and the orthogonal sequence to generate a mapped sequence; and

transmitting the mapped sequence in the subframe.

5. A mobile communication apparatus configured to transmit uplink control signals in a wireless communication system using at least one subframe comprising two slots, each slot including a plurality of symbols, the wireless communication system configured to transmit a scheduling request (SR) via an assigned SR uplink control channel resource and to transmit an ACK/NACK via an assigned ACK/NACK uplink control channel resource, the mobile communication apparatus comprising:

a transmitter configured to

determine whether or not an ACK/NACK and a SR are to be transmitted in a subframe, and

transmit the ACK/NACK and the SR in the subframe via an uplink control channel resource if it is determined that the ACK/NACK and the SR are to be transmitted in the subframe,

wherein the uplink control channel resource for a positive SR transmission is the assigned SR uplink control channel resource.

6. The mobile communication apparatus of claim 5, wherein the uplink control channel resource for a negative SR transmission is the assigned ACK/NACK uplink control channel resource.

7. The mobile communication apparatus of claim 5, wherein when transmitting the ACK/NACK and the SR for the positive SR transmission in the subframe, the transmitter is configured to

determine an orthogonal sequence based on the assigned SR uplink control channel resource;

spread the ACK/NACK with the orthogonal sequence to generate a mapped sequence; and

transmit the mapped sequence in the subframe.

8. The mobile communication apparatus of claim 5, wherein when transmitting the ACK/NACK and the SR for the positive SR transmission in the subframe, the transmitter is configured to

determine a frequency domain sequence and an orthogonal sequence based on the assigned SR uplink control channel resource;

spread the ACK/NACK with the frequency domain sequence and the orthogonal sequence to generate a mapped sequence; and

transmit the mapped sequence in the subframe.