公开(公告)号：US20240372900A1

公开(公告)日：2024-11-07

申请号：US18576475

申请日：2022-07-05

Applicant: Telecom Italia S.p.A.

Inventor： Fabio BULGARELLA ,  Mauro COCIGLIO

IPC: H04L65/1069 ,  H04L47/283 ,  H04L69/28

Abstract: It is disclosed a method for establishing a connection between a first node and a second node of a packet-switched communication network, such as by means of a three-way handshake procedure. The first node transmits to the second node a first connection establishing packet; the second node, transmits to the first node a second connection establishing packet in response to reception of the first connection establishing packet; and the first node transmits to the second node a third connection establishing packet in response to reception of the second connection establishing packet, after a predefined wait time TW has lapsed since reception of the second connection establishing packet. The predefined wait time TW, randomly selected by the first node, prevents non authorized parties who might eavesdrop the connection establishing packets—typically non encrypted—from deriving information about the positions of the nodes during the connection establishment procedure.

公开(公告)号：US20230403221A1

公开(公告)日：2023-12-14

申请号：US18250651

申请日：2020-10-28

Applicant: TELECOM ITALIA S.p.A.

Inventor： Mauro COCIGLIO

IPC: H04L43/0852

CPC classification number: H04L43/0858

Abstract: A method for providing one-way delay measurements on a bidirectional packet flow exchanged between two nodes of a packet-switched network. Each packet of the bidirectional packet flow comprises a marking field. At predefined times, the two nodes start transmission of respective measurement packet blocks made of packets with marking field set equal to a measurement value. Each node continues transmission of the respective measurement packet block, until it starts receiving the measurement packet block transmitted by the other node. In response thereto, each node ends transmission of the respective measurement packet block. A measurement point placed on the path of the bidirectional packet flow detects the measurement packet blocks and provides one-way delay measurements based on their time properties. For example, the end-to-end one-way delay in a given direction may be measured as the duration of the measurement packet block transmitted in the opposite direction.

公开(公告)号：US20230087379A1

公开(公告)日：2023-03-23

申请号：US17905305

申请日：2021-03-02

Applicant: TELECOM ITALIA S.p.A.

Inventor： Mauro COCIGLIO

IPC: H04L43/0829

Abstract: A method for exchanging packets between two nodes of a packet-switched communication network. Each packet comprises a marking field and a reflected marking field. Each node sets the value of the marking field in its outgoing packets to be transmitted to the other node. This value is alternately switched between two alternative marking values every N outgoing packets. While incoming packets are received from the other node, each node also sets the value of the reflected marking field of its outgoing packets according to the value of the marking field of the incoming packets. An observer placed between the two nodes may count the packets whose marking field is equal to any of the marking values and/or the packets whose reflected marking field is equal to any of the marking values, and use N and such counts to provide a packet loss measurement.

公开(公告)号：US20250030620A1

公开(公告)日：2025-01-23

申请号：US18714921

申请日：2022-11-28

Applicant: Telecom Italia S.p.A.

Inventor： Mauro COCIGLIO

IPC: H04L43/0864 ,  H04L43/026

Abstract: It is disclosed a method for transmitting through a packet-switched communication network a measurement result (for example, an RTT measurement result) available at a node of the network. The node applies to packets to be transmitted to a further node of the network a marking value, which is switchable between two alternative marking values. The node performs a first switching of the marking value, then waits a wait whose duration is equal to a value indicative of the measurement result available at the node itself, and then performs a second switching of the marking value. A probe placed on the path of the marked packets detects the first and second switching in the packets, and obtains a reading of the measurement result available at the node as the time lapsing between them.

公开(公告)号：US20240064090A1

公开(公告)日：2024-02-22

申请号：US18259341

申请日：2021-12-28

Applicant: TELECOM ITALIA S.p.A.

Inventor： Mauro COCIGLIO

IPC: H04L45/121 ,  H04L45/12 ,  H04L43/0864 ,  H04L43/16

CPC classification number: H04L45/121 ,  H04L45/123 ,  H04L43/0864 ,  H04L43/16

Abstract: It is disclosed a method for performing a RTT measurement on a bidirectional packet flow transmitted between two nodes of a packet-switched communication network. Each node applies a respective marking value to its outgoing packets, and switches outgoing packet does not exceed a predefined time threshold. An intermediate measurement point may provide an RTT measurement as a time lapsing between two consecutive switching of the marking value in the packets transmitted in a certain direction.

公开(公告)号：US20230031183A1

公开(公告)日：2023-02-02

申请号：US17785317

申请日：2020-12-21

Applicant: TELECOM ITALIA S.p.A.

Inventor： Mauro COCIGLIO ,  Giuseppe FIOCCOLA

IPC: H04L43/026 ,  H04L45/7453 ,  H04L43/08

Abstract: An apparatus and associated method for processing packets transmitted in a packet-switched communication network includes a sampling module that identifies amongst the received packets a plurality of samples distributed in a statistically uniform way amongst at least two non-overlapping sample sequences. Each sample sequence is then subjected to at least one identification rule, thereby identifying in the sample sequence at least one sub-sequence of samples fulfilling the at least one identification rule. The identification rule comprises a condition on the value of at least one identification field of the packets. Then, at least one parameter indicative of a behavior of the at least one sub-sequence of samples is provided.

公开(公告)号：US20220263742A1

公开(公告)日：2022-08-18

申请号：US17622055

申请日：2020-06-26

Applicant: TELECOM ITALIA S.p.A.

Inventor： Mauro COCIGLIO

IPC: H04L43/0829 ,  H04L43/0864

Abstract: A method for enabling a round-trip packet loss measurement in a packet-switched communication network wherein a first node and a second node exchange packets comprising a packet loss field settable to an idle value or one or more measurement values. The first node performs a generation step whereby first packets having their set to a measurement value are transmitted to the second node. For each received first packet, the second node transmits back a second packet having its set to a measurement value. The first node then performs a reflection step whereby, for each received second packet, it transmits to the second node a respective third packet having its set to a measurement value. The time lapsing between start of the generation step and start of the reflection step has a predefined and substantially constant duration.

公开(公告)号：US20200336401A1

公开(公告)日：2020-10-22

申请号：US16957610

申请日：2018-12-21

Applicant: TELECOM ITALIA S.p.A.

Inventor： Mauro COCIGLIO ,  Luca FANTOLINO ,  Giuseppe FIOCCOLA ,  Angelo FRANCESCHINI

IPC: H04L12/26 ,  H04L12/841 ,  H04L12/723 ,  H04L12/46

Abstract: In a method for measurement of a round-trip performance in a packet-switched communication network, a measurement device cooperating with the communication network generates a flow of test packets formatted according to the network protocol supported by the network and comprising the address of the measurement device as destination address. The test packets are then transmitted within a tunnel set up in the network and the measurement device generates one or more transmission parameters. At the end of the tunnel, the test packets are extracted therefrom and sent back to the measurement device by the forwarding function of the network protocol supported by the network. Upon receipt of the test packets, it generates one or more reception parameters, which are then combined with the transmission parameters to provide the round-trip performance measurement.

公开(公告)号：US20220076566A1

公开(公告)日：2022-03-10

申请号：US17414768

申请日：2019-12-20

Applicant: TELECOM ITALIA S.p.A.

Inventor： Mauro COCIGLIO

IPC: G08G1/01 ,  G06F17/18

Abstract: A method and system for statistically tracking the dynamics of a population over an area comprising entry points and exit points such that each population member entering through one entry point either exits through one exit point or stations within the area. At each entry point, an entry counter counts the number of entering members and, at each exit point, an exit counter counts the number of exiting members. Based on the counter values, the dynamics of the population are statistically tracked in terms of evolution in time of the number of members stationing in the area. The number of stationing members is retroactively adjusted when during an observation period it is determined that the number of exiting members is higher than the number of entering members, plus the number of members which were stationing within the area at the beginning of the observation period.

公开(公告)号：US20200169488A1

公开(公告)日：2020-05-28

申请号：US16630133

申请日：2018-07-16

Applicant: TELECOM ITALIA S.p.A.

Inventor： Mauro COCIGLIO ,  Giuseppe FIOCCOLA

IPC: H04L12/26 ,  H04L12/721 ,  H04L12/927

Abstract: A method for performing a performance measurement on a packet flow is based on division of the packet flow to be measured in alternating blocks. A couple of connections are provided, originated by respective originating network points (physical or logical interface or port) and terminated by respective terminating network points (physical or logical interface or port). Division of the packet flow to be measured is implemented by periodically switching transmission of the packets between the two originating network points. At each network point originating or terminating a connection, a measurement point is implemented which provides performance parameters (counter and/or timestamp) relating to the packets to be transmitted by or which have been received from the related connection. The performance measurement on the packet flow is then performed based on the performance parameters provided by the measurement points.