- Patent Title: Delayed and bundled retransmissions for low bandwidth applications
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Application No.: US14498973Application Date: 2014-09-26
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Publication No.: US09615329B2Publication Date: 2017-04-04
- Inventor: Tarik Tabet , Vinay R. Majjigi , Syed A. Mujtaba , Christian W. Mucke
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Downey Brand LLP
- Main IPC: H04W52/02
- IPC: H04W52/02 ; H04L1/18 ; H04L1/16

Abstract:
Apparatus and methods are disclosed for performing delayed hybrid automatic repeat request (HARQ) communications in the downlink (DL) to reduce power consumption for a user equipment (UE) during a connected mode discontinuous reception (C-DRX) cycle. An enhanced NodeB can be configured to monitor a physical uplink control channel (PUCCH) for DL HARQ information to determine when the PUCCH contains a negative acknowledgement (NACK) message, and in response to determining that the PUCCH contains a NACK message, the eNodeB can wait until a next C-DRX ON duration to transmit a HARQ DL retransmission. The eNodeB can also determine whether or not to bundle the HARQ DL retransmission in consecutive transmission time intervals, based on a signal to interference plus noise ratio (SINR) associated with the UE.
Public/Granted literature
- US20150092645A1 DELAYED AND BUNDLED RETRANSMISSIONS FOR LOW BANDWIDTH APPLICATIONS Public/Granted day:2015-04-02
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