Method of transmitting uplink control signals in wireless communication system
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.
1. A method for transmitting uplink control signals in a wireless communication system using a subframe comprising two slots, each slot including a plurality of symbols, the wireless communication system configured to transmit a scheduling request (SR) via a physical uplink control channel resource which is assigned for a SR transmission and to transmit an ACK/NACK via a physical uplink control channel resource which is assigned for an ACK/NACK transmission, the method comprising:
generating an ACK/NACK modulation symbol by modulating the ACK/NACK; and
transmitting the ACK/NACK modulation symbol in the subframe via the physical uplink control channel resource which is assigned for the SR transmission if it is determined that the ACK/NACK and the SR are to be transmitted in the subframe.
2. The method of claim 1 , further comprising:
transmitting the ACK/NACK modulation symbol in the subframe via the physical uplink control channel resource which is assigned for the ACK/NACK transmission if it is determined that the ACK/NACK is to be transmitted in the subframe without an SR.
3. The method of claim 1 , wherein the step of transmitting the ACK/NACK modulation symbol in the subframe via the physical uplink control channel resource which is assigned for the SR transmission comprises:
determining an orthogonal sequence based on the physical uplink control channel resource which is assigned for the SR transmission;
spreading the ACK/NACK modulation symbol with the orthogonal sequence to generate a mapped sequence; and
transmitting the mapped sequence in the subframe.
4. A mobile communication apparatus configured to transmit uplink control signals in a wireless communication system using a subframe comprising two slots, each slot including a plurality of symbols, the wireless communication system configured to transmit a scheduling request (SR) via a physical uplink control channel resource which is assigned for a SR transmission and to transmit an ACK/NACK via a physical uplink control channel resource, which is assigned for an ACK/NACK transmission, the mobile communication apparatus comprising:
a memory; and
a processor operatively coupled with the memory and configured to:
generate an ACK/NACK modulation symbol by modulating the ACK/NACK; and
transmit the ACK/NACK modulation symbol in the subframe via the physical uplink control channel resource which is assigned for the SR transmission if it is determined that the ACK/NACK and the SR are to be transmitted in the subframe.
5. The mobile communication apparatus of claim 4 , wherein the processor is configured to transmit the ACK/NACK modulation symbol in the subframe via the physical uplink control channel resource which is assigned for the ACK/NACK transmission if it is determined that the ACK/NACK is to be transmitted in the subframe without an SR.
6. The mobile communication apparatus of claim 4 , wherein the processor is configured to transmit the ACK/NACK modulation symbol in the subframe via the physical uplink control channel resource which is assigned for the SR transmission by:
determining an orthogonal sequence based on the physical uplink control channel resource assigned for the SR transmission;
spreading the ACK/NACK modulation symbol with the orthogonal sequence to generate a mapped sequence; and
transmitting the mapped sequence in the subframe.