US2016156449A1

5G,4G

Title

METHOD FOR ALLOCATING PHYSICAL HYBRID AUTOMATIC REPEAT REQUEST INDICATOR CHANNEL

Application Number:

US201615013772

Publication Date:

02-06-2016

Current Assignee:

Family ID:

Application Date:

02-02-2016

Publication Country:

US

Priority Date:

28-01-2008

Declaring Company:

LG

Abstract  Abstract

A method and apparatus are presented for transmitting acknowledgement (ACK)/negative acknowledgement (NACK) signals in a wireless communication system. ACK/NACKs are spread using spreading codes of a spreading factor the spreading factor being one of a first spreading factor equal to 2 and a second spreading factor equal to 4. One or more physical hybrid automatic repeat request (ARQ) indicator channel (PHICH) groups allocated in units of four resource elements are transmitted each PHICH group carrying up to four ACK/NACK signals for the first spreading factor and up to eight ACK/NACK signals for the second spreading factor. A total number of allocated PHICH groups for the first spreading factor is determined as twice a total number of allocated PHICH groups for the second spreading factor. A PHICH group index for an ACK/NACK is determined using a first function. A spreading code index for the ACK/NACK is determined using a second function.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.