Invention Grant
- Patent Title: Method and apparatus for measuring and reporting a rank and a precoding matrix for multiple-input multiple-output communication
-
Application No.: US14701141Application Date: 2015-04-30
-
Publication No.: US09843373B2Publication Date: 2017-12-12
- Inventor: Kyle Jung-Lin Pan , Donald M. Grieco , Robert L. Olesen
- Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
- Applicant Address: US DE Wilmington
- Assignee: InterDigital Patent Holdings, Inc.
- Current Assignee: InterDigital Patent Holdings, Inc.
- Current Assignee Address: US DE Wilmington
- Agency: Condo Roccia Koptiw LLP
- Main IPC: H04B7/04
- IPC: H04B7/04 ; H04L5/00 ; H04W72/04

Abstract:
A method and apparatus for measuring and reporting a rank and/or a precoding matrix for multiple-input multiple-output (MIMO) communication are disclosed. A metric indicating a channel condition is measured and a rank is selected based on the metric. The metric may be a signal-to-interference and noise ratio (SINR), throughput, a block error rate (BLER), system capacity, a sum rate, or the like. An SINR for each radio block group (RBG) for each rank is calculated. A data rate is calculated for each RBG based on the SINR for each rank. An overall rate for all RBGs is calculated for each rank. At least one rank is selected based on the overall rate. At least one precoding matrix may be selected jointly with or separately from the at least one rank.
Public/Granted literature
Information query