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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9397794 B1

PDFFull Text
Date of Patent:
Jul. 19, 2016

Filed:

Jul. 01, 2014

Automatic retransmission in communications systems

Applicant:

Inventergy, Inc., Campbell, CA (US);

Inventors:

Choo Eng Yap, Singapore, SG;

Lee Ying Loh, Singapore, SG;

Assignee:

INVENTERGY, INC., Campbell, CA (US);

Attorney:

Workman Nydegger

Primary Examiner:

M Mujtaba K Chaudry

Int. Cl.
CPC ...
H04L 1/18 (2006.01); H03M 13/00 (2006.01); H04L 1/06 (2006.01); H04B 7/04 (2006.01); H04L 1/08 (2006.01); H03M 13/09 (2006.01); H03M 13/23 (2006.01); H03M 13/29 (2006.01); H04L 1/00 (2006.01);
U.S. Cl.
CPC ...
H04L 1/1819 (2013.01); H03M 13/6306 (2013.01); H04B 7/0413 (2013.01); H04L 1/0625 (2013.01); H04L 1/0643 (2013.01); H04L 1/08 (2013.01); H04L 1/1887 (2013.01); H03M 13/09 (2013.01); H03M 13/23 (2013.01); H03M 13/2957 (2013.01); H04L 1/0001 (2013.01); H04L 1/0656 (2013.01);
Abstract

Automatic retransmission in communications systems. An embodiment includes retransmitting data. A cyclic redundancy check (CRC) is executed on a portion of data received as part of a data stream at a receiver antenna. Feedback information of acknowledgment (ACK) or negative acknowledgement (NACK) for the portion of data is determined based on a result of the CRC. It is identified that the portion of data is to be retransmitted based on the feedback information indicating a NACK with respect to the portion of data. A retransmission mode is selected for the portion of data based on desired characteristics of the data stream, including a first mode that retransmits the portion of data on at least a first transmitter antenna while transmitting new data on at least a second transmitter antenna; and a second mode that retransmits the portion of data simultaneously on at least the first and second transmitter antennas.

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