Method for transmitting wireless signal and device therefor

Patent metadata

Field	Value
Publication number	US-2016006548-A1
Application number	US-201414771159-A
Country	US
Kind code	A1
Filing date	Mar 13, 2014
Priority date	Mar 13, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

The present invention relates to a wireless communication system. Particularly, the present invention relates to a method for receiving control information in a wireless communication system and a device therefor, the method comprising the steps of: receiving a PDCCH signal including uplink scheduling information; transmitting a PUSCH signal by using the uplink scheduling information: and receiving a PHICH signal including acknowledgement information on the PUSCH signal, wherein an RS for the PUSCH signal exists only in one slot per RB pair within an RB set in which the PUSCH signal is transmitted, and a resource for receiving the PHICH signal is determined by using an index of the slot in which the RS exists.

First claim

What is claimed is:

1 . A method for receiving control information by a user equipment (UE) in a wireless communication system, the method comprising:
receiving a physical downlink control channel (PDCCH) signal including an uplink scheduling information; transmitting a physical uplink shared channel (PUSCH) signal using the uplink scheduling information; and receiving a physical hybrid ARQ indicator channel (PHICH) including an acknowledgement information for the PUSCH signal, wherein a reference signal (RS) for the PUSCH signal exists only in one slot per resource block (RB) pair within an RB set in which the PUSCH signal is transmitted, and wherein a resource for receiving the PHICH signal is determined using an index of a slot in which the RS exists.

2 . The method according to claim 1 , wherein:
the RS is configured to alternately exist in different slots within the RB set according to RB index, and the resource for receiving the PHICH signal is determined using the index of the slot, in which the RS exists, in a specific RB of the RB set.

3 . The method according to claim 2 , wherein the specific RB has a lowest index within the RB set.

4 . The method according to claim 2 , wherein the RB index is indexed based on all RBs within system bandwidth.

5 . The method according to claim 2 , wherein the RB index is indexed based on RBs of the RB set.

6 . The method according to claim 1 , wherein the index of the slot, in which the RS exists, indicates an offset used in a process of determining at least one of a PHICH group index and a PHICH sequence index.

7 . A user equipment (UE) configured to receive a control information in a wireless communication system, the UE comprising:
a radio frequency (RF) unit; and a processor, wherein the processor is configured to receive a physical downlink control channel (PDCCH) signal including an uplink scheduling information, to transmit a physical uplink shared channel (PUSCH) signal using the uplink scheduling information, and to receive a physical hybrid ARQ indicator channel (PHICH) including an acknowledgement information for the PUSCH signal, wherein a reference signal (RS) for the PUSCH signal exists only in one slot per resource block (RB) pair within an RB set in which the PUSCH signal is transmitted, and wherein a resource for receiving the PHICH signal is determined using an index of a slot in which the RS exists.

8 . The UE according to claim 7 , wherein:
the RS is configured to alternately exist in different slots within the RB set according to RB index, and the resource for receiving the PHICH signal is determined using the index of the slot, in which the RS exists, in a specific RB of the RB set.

9 . The UE according to claim 8 , wherein the specific RB has a lowest index within the RB set.

10 . The UE according to claim 8 , wherein the RB index is indexed based on all RBs within system bandwidth.

11 . The UE according to claim 8 , wherein the RB index is indexed based on RBs of the RB set.

12 . The UE according to claim 7 , wherein the index of the slot, in which the RS exists, indicates an offset used in a process of determining at least one of a PHICH group index and a PHICH sequence index.

Assignees

• Lg Electronics Inc

Inventors

• Yang Suckchel
• Yi Yunjung
• Ahn Joonkui
• Kim Bonghoe

Classifications

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04W72/1268

  of uplink data flows · CPC title

• H04W74/006

  in the downlink, i.e. towards the terminal · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title