The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2023
Filed:
Oct. 15, 2020
Mavenir Networks, Inc, Richardson, TX (US);
Sridhar Rajagopal, Plano, TX (US);
MAVENIR NETWORKS, INC, Richardson, TX (US);
Abstract
A cloud radio access network (CRAN) system includes a baseband unit (BBU) and a radio unit (RU) remote from the BBU. The fronthaul interface between the RU and the BBU includes a radio frequency interface (RF) functionality implemented in the RU, and implementation of physical layer (PHY) functionality split between the BBU and the RU, including downlink (DL) resource element mapping and DL precoding implemented in the RU. Transmission of reference signals from the BBU to the RU is implemented separately from transmission of data from the BBU to the RU. The RU caches the transmitted reference signal based on at least one of subframe, symbol, xRAN resource block (XRB) and resource element (RE) associated with the reference signal. The fronthaul interface supports at least one of: (i) narrow band Internet of things (NB-IoT) physical random access channel (PRACH), and (ii) NB-IoT multi-tone format on physical uplink shared channel (PUSCH).