Patent · US Active

Synchronous hybrid automatic repeat request (HARQ) protocol employing a first information element indicating whether to perform retransmission of an uplink data packet and a second information element indicates modulation and coding scheme (MCS) for the retransmission

US8429481B2 · kind B2 · utility

8Cited by

11References

4Claims

0Family size

Assignee

PANASONIC HOLDINGS CORPORATION · JP

Inventors

Joachim Löhr · Wiesbaden, DE
Eiko Seidel · Darmstadt, DE
Dragan Petrovic · Geneva, US

Key dates

Filing date	Jun 6, 2011
Grant date	Apr 23, 2013
Priority date	—
Expiry date	Sep 9, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04L1/1803
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A base station receives an uplink data packet from a user equipment based on a synchronous hybrid automatic repeat request (HARQ) protocol, and transmits a first information element and a second information element in parallel to the user equipment. The first information element indicates whether to perform a retransmission of the uplink data packet, and the second information element indicates modulation and coding scheme (MCS) for the retransmission. The base station receives the retransmission from the user equipment according to the modulation and coding scheme. The first information element is for example an ACK/NACK feedback message.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.