-
公开(公告)号：US20210112682A1
公开(公告)日：2021-04-15
申请号：US16842505
申请日：2020-04-07
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Mehmet Onder Cap , Manigandan Boopalan , Joel Richard Goergen , Sandeep Mehdiratta , Manjunatha Reddy Shivashankara , Damaruganath Pinjala
Abstract: In one embodiment, an apparatus includes a chassis base, a printed circuit board mounted on the chassis base, a heatsink positioned over the printed circuit board to prevent corrosion of components on the printed circuit board, wherein the heatsink comprises a plurality of upward extending fins and a plurality of downward extending walls, a seal interposed between an edge of the downward extending walls and the chassis base, and a cover extending over the heatsink.
-
22.发明申请公开(公告)号：US20200252889A1
公开(公告)日：2020-08-06
申请号：US16435946
申请日：2019-06-10
Applicant: Cisco Technology, Inc.
Inventor： Prashant Anand , Manoj Kumar , Sudhir Kayamkulangara , Dinuraj K , Manigandan Boopalan
Abstract: Techniques that provide link auto-negotiation between a radio equipment controller (REC) and a radio equipment (RE) are described herein. In one embodiment, a method includes performing, by a proxy master, a Common Public Radio Interface (CPRI) Layer 1 (L1) link auto-negotiation with a RE to achieve a L1 synchronization between the proxy master and the RE at a link bit rate; communicating the link bit rate from the proxy master to a proxy slave; performing, by the proxy slave, a CPRI L1 link auto-negotiation with a REC to determine whether a L1 synchronization between the proxy slave and the REC is achieved, wherein if the L1 synchronization is achieved, the link bit rate is a common matching link bit rate achieved; and upon the common matching link bit rate being achieved, establishing a CPRI link between the REC and the RE using the common matching link bit rate.
-
公开(公告)号：US10387278B2
公开(公告)日：2019-08-20
申请号：US15643661
申请日：2017-07-07
Applicant: Cisco Technology, Inc.
Inventor： Rohit Dev Gupta , Joel R. Goergen , Jatin Kohli , Manigandan Boopalan
Abstract: In one embodiment, a device in a modular networking rack determines an online insertion and removal (OIR) time for a particular device module of a plurality of device modules contained within the modular networking rack. The device determines an OIR time for the plurality of device modules based on the OIR time for the particular device module and provides an indication of the OIR time for the plurality of device modules for display to a user.
-
公开(公告)号：US20240215196A1
公开(公告)日：2024-06-27
申请号：US18596926
申请日：2024-03-06
Applicant: Cisco Technology, Inc.
Inventor： Mehmet Onder Cap , Manigandan Boopalan , Joel Richard Goergen , Sandeep Mehdiratta , Manjunatha Reddy Shivashankara , Damaruganath Pinjala
CPC classification number: H05K7/20154 , H05K1/0203 , H05K2201/066
Abstract: In one embodiment, an apparatus includes a chassis base, a printed circuit board mounted on the chassis base, a heatsink positioned over the printed circuit board to prevent corrosion of components on the printed circuit board, wherein the heatsink comprises a plurality of upward extending fins and a plurality of downward extending walls, a seal interposed between an edge of the downward extending walls and the chassis base, and a cover extending over the heatsink.
-
公开(公告)号：US11818596B2
公开(公告)日：2023-11-14
申请号：US17527642
申请日：2021-11-16
Applicant: Cisco Technology, Inc.
Inventor： Prashant Anand , Manoj Kumar , Sudhir Kayamkulangara , Manigandan Boopalan , Dinuraj K
IPC: H04W24/04 , H04L41/0677 , H04L41/0654 , H04L41/069 , H04W84/20
CPC classification number: H04W24/04 , H04L41/069 , H04L41/0654 , H04L41/0677 , H04W84/20
Abstract: In a fronthaul network system, when a CPRI link fault is detected at either of the REC or RE, both the REC and RE perform a Layer 1 synchronization. The fault may be a loss of signal, loss of frame, or a line code violation, which also translates to a loss of signal if seen beyond a threshold. A proxy slave recognizes the fault in a CPRI signal from a first radio device and inserts the fault alarm into a header of a radio over Ethernet frame. The proxy slave continues to communicate the signal for a configured number of hyper-frames. A proxy master receives the signal and communicates the signal and the fault alarm to a receiving radio device for a configured number of hyper-frames. The proxy and radio devices all perform a joint resynchronization.
-
Patent Agency Ranking
公开(公告)号：US11343781B2
公开(公告)日：2022-05-24
申请号：US16435961
申请日：2019-06-10
Applicant: Cisco Technology, Inc.
Inventor： Prashant Anand , Manoj Kumar , Sudhir Kayamkulangara , Dinuraj K , Manigandan Boopalan
Abstract: Techniques that provide link establishment between a radio equipment controller (REC) and a radio equipment (RE) in a fronthaul network are described herein. In one embodiment, a method includes performing, Common Public Radio Interface (CPRI) Layer 1 (L1) link auto-negotiation operations to establish a CPRI link between the REC and RE. A proxy slave may achieve a hyper frame number (HFN) synchronization with the REC at a link bit rate for a first CPRI bit stream and communicate the first CPRI bit stream and the link bit rate to a proxy master. The proxy master may communicate a second CPRI bit stream to the proxy slave to transmit to the REC. The L1 link auto-negotiation operations are completed and CPRI link is established between the REC and the RE when the REC achieves a HFN synchronization for the second CPRI bit stream.
-
公开(公告)号：US20220078941A1
公开(公告)日：2022-03-10
申请号：US17528379
申请日：2021-11-17
Applicant: Cisco Technology, Inc.
Inventor： Mehmet Onder Cap , Manigandan Boopalan , Joel Richard Goergen , Sandeep Mehdiratta , Manjunatha Reddy Shivashankara , Damaruganath Pinjala
Abstract: In one embodiment, an apparatus includes a chassis base, a printed circuit board mounted on the chassis base, a heatsink positioned over the printed circuit board to prevent corrosion of components on the printed circuit board, wherein the heatsink comprises a plurality of upward extending fins and a plurality of downward extending walls, a seal interposed between an edge of the downward extending walls and the chassis base, and a cover extending over the heatsink.
-
公开(公告)号：US20210360555A1
公开(公告)日：2021-11-18
申请号：US17386714
申请日：2021-07-28
Applicant: Cisco Technology, Inc.
Inventor： Prashant Anand , Manoj Kumar , Sudhir Kayamkulangara , Dinuraj K , Manigandan Boopalan
Abstract: Techniques that provide link auto-negotiation between a radio equipment controller (REC) and a radio equipment (RE) are described herein. In one embodiment, a method includes performing, by a proxy master, a Common Public Radio Interface (CPRI) Layer 1 (L1) link auto-negotiation with a RE to achieve a L1 synchronization between the proxy master and the RE at a link bit rate; communicating the link bit rate from the proxy master to a proxy slave; performing, by the proxy slave, a CPRI L1 link auto-negotiation with a REC to determine whether a L1 synchronization between the proxy slave and the REC is achieved, wherein if the L1 synchronization is achieved, the link bit rate is a common matching link bit rate achieved; and upon the common matching link bit rate being achieved, establishing a CPRI link between the REC and the RE using the common matching link bit rate.
-
29.发明授权公开(公告)号：US11095384B2
公开(公告)日：2021-08-17
申请号：US16751509
申请日：2020-01-24
Applicant: Cisco Technology, Inc.
Inventor： Prashant Anand , Sudhir Kayamkulangara , Dinuraj K , Manigandan Boopalan , Manoj Kumar
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.
-
公开(公告)号：US10863386B1
公开(公告)日：2020-12-08
申请号：US16573162
申请日：2019-09-17
Applicant: Cisco Technology, Inc.
Inventor： Prashant Anand , Manoj Kumar , Sudhir Kayamkulangara , Dinuraj K , Manigandan Boopalan
Abstract: Techniques are described to provide for state machine handling at a proxy node in an Ethernet-based fronthaul network. In one example, a method includes performing, by a proxy node of a fronthaul network, negotiation operations associated with establishing a Common Public Radio Interface (CPRI) communication link between radio devices of the fronthaul network, wherein the negotiation operations comprise Layer 1 synchronization operations and Radio over Ethernet (RoE) validation operations for one or more link bit rates; and facilitating communications between the radio devices at a matching link bit rate upon completion of the negotiation operations.
-
-
-
-
-
-
-
-
-
Search Results
31
records
(took 0.023 seconds)
