Invention Grant
- Patent Title: Contention window size adaptation
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Application No.: US15760010Application Date: 2016-03-28
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Publication No.: US10708000B2Publication Date: 2020-07-07
- Inventor: Hong He , Hwan-Joon Kwon , Seunghee Han , Abhijeet Bhorkar , Jeongho Jeon
- Applicant: Intel IP Corporation
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Eschweiler & Potashnik, LLC
- International Application: PCT/US2016/024455 WO 20160328
- International Announcement: WO2017/069798 WO 20170427
- Main IPC: H04L1/16
- IPC: H04L1/16 ; H04L1/18 ; H04W74/08 ; H04L1/00 ; H04W76/28 ; H04W16/14 ; H04W88/08

Abstract:
Techniques for contention window size (CWS) adaptation (CWSA) are discussed. One example apparatus can comprise a processor that can receive HARQ messages UEs in response to PDSCH transmissions in one or more reference subframes. The HARQ messages can comprise HARQ-ACK values that denote a HARQ-ACK state for a transport block associated with License Assisted Access (LAA) operation, wherein each of the HARQ-ACK states is one of a DTX state, an ACK state, a NACK state, or an “any” state. The processor can also; determine a metric value for each of the HARQ-ACK states; calculate a CWS adjustment metric based on the determined metric values; increase a CWS to a next higher allowed value when the CWS adjustment metric is greater than or equal to a threshold; and reset the CWS to a minimum allowed value when the CWS adjustment metric is less than the threshold.
Public/Granted literature
- US20180254858A1 CONTENTION WINDOW SIZE ADAPTATION Public/Granted day:2018-09-06
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