Invention Grant
- Patent Title: System and method for multicast communications in Wi-Fi networks
- Patent Title (中): Wi-Fi网络中组播通信的系统和方法
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Application No.: US14446210Application Date: 2014-07-29
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Publication No.: US09451417B2Publication Date: 2016-09-20
- Inventor: Santosh Paul Abraham , George Cherian
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Knobbe Martens Olson & Bear LLP
- Main IPC: H04H20/71
- IPC: H04H20/71 ; H04W4/06 ; H04L5/00 ; H04L1/16 ; H04L12/18 ; H04L1/00

Abstract:
A system and method for reliable multicast communications is disclosed herein. In one aspect, a first station may receive a first multicast frame having a first modulation and coding scheme and a first sequence number. The station may then receive a subsequent negative acknowledgement request having a second modulation and coding scheme and a indicating a second sequence number for previously transmitted multicast frame, with the second modulation and coding scheme having a lower data rate than the first modulation and coding scheme. The station may then selectively acknowledge the negative acknowledgement request based on a comparison of first sequence number and the second sequence number. In another aspect, the station transmits a negative acknowledgement if the second sequence number does not match the first sequence number and may further receive acknowledgement frame from an access point.
Public/Granted literature
- US20150146607A1 SYSTEM AND METHOD FOR MULTICAST COMMUNICATIONS IN WI-FI NETWORKS Public/Granted day:2015-05-28
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