United States Patent 9,258,087
Somasundaram , et al. February 9, 2016
Method and apparatus for hybrid automatic repeat request transmission
Abstract
A method and apparatus for hybrid automatic repeat request (HARQ) transmission are disclosed. If a packet has not been successfully transmitted, it is determined whether an HARQ early termination condition is met. If the HARQ early termination condition is met, the HARQ process is terminated and the packet is discarded at the HARQ level. The HARQ early termination condition is met if a positive acknowledgement (ACK) has not been received until the number of retransmissions reaches a predetermined limit that is dynamically configured based on channel condition, measurement, etc. Alternatively, the HARQ early termination condition is met if a transmit power required for successful transmission of the packet is much higher than an actual transmit power. Alternatively, the HARQ early termination condition is met if a transport format combination (TFC) selected for retransmission is different from an optimal TFC. A higher layer may be notified of the early HARQ termination.
Inventors:
Somasundaram; Shankar (Mountain View, CA), Sammour; Mohammed (Amman, JO), Iacono; Ana Lucia (Phoenixville, PA)
Applicant:
Name
City
State
Country
Type
InterDigital Technology Corporation
Wilmington
N/A
DE
Assignee:
InterDigital Technology Corporation (Wilmington, DE)
Family ID:
1000001636130
Appl. No.:
13/668,862
Filed:
November 5, 2012
Prior Publication Data
Document Identifier
Publication Date
US 20130067293 A1 Mar 14, 2013
Related U.S. Patent Documents
Application Number
Filing Date
Patent Number
Issue Date
11968979 Jan 3, 2008 8332702
60883470 Jan 4, 2007
Current U.S. Class: 1/1
Current CPC Class: H04L 1/1887 (20130101); H04L 1/188 (20130101); H04L 1/1822 (20130101); H04L 1/1877 (20130101)
Current International Class: H04L 1/18 (20060101)
Field of Search: ;714/748,704,794,799
PPP
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