Invention Grant
- Patent Title: Re-timing a packetized radio flow to clean noise induced by packet delay variation of a packet network
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Application No.: US16564493Application Date: 2019-09-09
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Publication No.: US10594423B1Publication Date: 2020-03-17
- Inventor: Prashant Anand , Sudhir Kayamkulangara , Dinuraj K , Manigandan Boopalan , Manoj Kumar
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Edell, Shapiro & Finnan, LLC
- Main IPC: H04J3/06
- IPC: H04J3/06 ; H04L29/06

Abstract:
Techniques are described to provide for re-timing a packetized radio flow to clean noise induced by packet delay variation of a packet network. In one example, a method includes receiving, at a first node of a fronthaul network, a Radio over Ethernet (RoE) frame transmitted by a second node in which the RoE frame comprises a Common Public Radio Interface (CPRI) bit stream associated with a first radio device, a sequence number, and a first time stamp. The method may further include generating a second time stamp by the first node upon obtaining the RoE frame; calculating an induced delay value based, at least in part, on the first time stamp and the second time stamp; calculating a re-timing value based on a re-timing interval and the induced delay value; and transmitting the CPRI bit stream to a second radio device based on the re-timing value.
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