发明名称 |
Method and apparatus for transmitting HARQ ACK/NACK signal in multi-antenna system |
摘要 |
A method and apparatus of transmitting an ACK/NACK signal for a hybrid automatic repeat request (HARQ) in a wireless communication system is provided. A first ACK/NACK resource index and a second ACK/NACK resource index based on resources used to transmit a downlink control channel is determined. An ACK/NACK signal for a downlink transport block is transmitted through a plurality of antennas using first ACK/NACK resources obtained from the first ACK/NACK resource index and second ACK/NACK resources obtained from the second ACK/NACK resource index. An HARQ ACK/NACK signal can be reliably transmitted through a plurality of antennas. |
申请公布号 |
US9008011(B2) |
申请公布日期 |
2015.04.14 |
申请号 |
US201013254762 |
申请日期 |
2010.03.03 |
申请人 |
LG Electronics Inc. |
发明人 |
Seo Dong Youn;Kim Min Gyu;Lee Dae Won;Yang Suck Chel;Ahn Joon Kui;Lee Jung Hoon |
分类号 |
H04W4/00;H04L1/18;H04L1/16;H04L1/06;H04L1/00;H04L5/00;H04L1/12;H04W28/04;H04W72/04 |
主分类号 |
H04W4/00 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A method of transmitting an ACK/NACK signal for hybrid automatic repeat request in a wireless communication system, the method comprising:
receiving, by a user equipment (UE), a downlink allocation on a downlink control channel; receiving, by the UE, at least one downlink transport block by using the downlink allocation; determining, at the UE, a first ACK/NACK resource index and a second ACK/NACK resource index; transmitting, at the UE, an ACK/NACK signal for the at least one downlink transport block by using a first uplink resource indicated by the first ACK/NACK resource index through a first antenna to a base station; and transmitting, at the UE, the ACK/NACK signal for the at least one downlink transport block by using a second uplink resource indicated by the second ACK/NACK resource index through a second antenna to the base station, wherein the first ACK/NACK resource index for the first antenna is determined based on resources used for the downlink control channel and the second ACK/NACK resource index for the second antenna is determined based on a value, which is equal to a summation of the first ACK/NACK resource index and an integer, wherein the resources used for the downlink control channel include at least one control channel element (CCE), and the first ACK/NACK resource index is a lowest CCE index among CCE indices for the downlink control channel, wherein the second ACK/NACK resource index is a CCE index subsequent to the lowest CCE index, wherein the downlink allocation is received in a k-th subframe and the ACK/NACK signal is transmitted in a (k+4)th subframe through the first and second antennas, and wherein the first uplink resource is used for configuring a first physical uplink control channel (PUCCH) and the second uplink resource is used for configuring a second PUCCH. |
地址 |
Seoul KR |