EP2179545A2 - Mechanismus zur aktualisierung der parameter eines pseudolinks - Google Patents

Mechanismus zur aktualisierung der parameter eines pseudolinks

Info

Publication number
EP2179545A2
EP2179545A2 EP08826779A EP08826779A EP2179545A2 EP 2179545 A2 EP2179545 A2 EP 2179545A2 EP 08826779 A EP08826779 A EP 08826779A EP 08826779 A EP08826779 A EP 08826779A EP 2179545 A2 EP2179545 A2 EP 2179545A2
Authority
EP
European Patent Office
Prior art keywords
router
pseudo
link
data
parameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08826779A
Other languages
English (en)
French (fr)
Inventor
Frédéric JOUNAY
Philippe Niger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orange SA
Original Assignee
France Telecom SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by France Telecom SA filed Critical France Telecom SA
Publication of EP2179545A2 publication Critical patent/EP2179545A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • H04L45/502—Frame based

Definitions

  • the invention lies in the field of telecommunications, and more particularly in the field of packet switching networks.
  • the data to be transmitted is in the form of packets processed by routers of the network until reaching their destination.
  • the set of packets to be transmitted constitutes a data stream.
  • An example of a technology used in packet switching networks to carry data packets is MPLS (MultiProtocol Label Switching) technology.
  • the MPLS technology proposes to add data packets to one or more tags containing information enabling routers in the network to determine the next hop a packet must make to reach its destination.
  • MPLS is described in more detail in a document I 1 (IETF Internet standards group, abbreviation for the English words Internet Engineering Task Force), referenced RFC 3031 (RFC means "request for comment or English Request For However, the MPLS protocol only allows the processing of packets compliant with the Internet protocol (IP).
  • IP Internet protocol
  • I 1 IETF's PWE3 PulseudoWire Emulation Edge to Edge
  • PWE3 PulseudoWire Emulation Edge to Edge
  • RFC 3985 allow the transmission of non-IP-compliant data packets, such as, for example, ATM-compliant data packets.
  • a pseudo-link pw1 is established between a first router PE1 disposed at the edge of a packet switching network PSN and a second router PE2 also disposed at the edge of the network PSN.
  • the first router PE1 sends a stream of data transmitted through the pseudo-link pw1 to the second router PE2.
  • the data constituting the data stream sent by the router PE1 is generated by a first client equipment CE1 connected to the router PE1.
  • a second client device CE2 connected to the router PE2 processes the data constituting the stream of data received by the router PE2.
  • the router PE1 encapsulates the data generated by the client equipment CE1 according to a predetermined format.
  • a predetermined format is the volume of data.
  • the data to be encapsulated can be divided into blocks of 15 payload bits or a fixed number of ATM cells.
  • the router PE1 is configured to encapsulate the data according to this predetermined format.
  • the router PE2 is also configured to receive data conforming to the predetermined format in which they were encapsulated by the router PE1.
  • the establishment of the pseudo-link pw1 is at the initiative of the router PE1 and is based on the exchange of establishment messages compliant with the LDP protocol (Label
  • This first setup message comprises a SAIH identifier of the input router PE1, and a TAII2 identifier of the output router PE2, parameters of the pseudo-link, and a first label.
  • This first label is intended to be added in the header of all the data transmitted by the router PE2 to the router PE1 through the pseudo-link pw1.
  • the router PE2 On receipt of this first pseudo-link establishment message, the router PE2 sends to the router PE1 a second establishment message of a pseudo-link comprising an identifier SAII2 of the router PE2, and a TAIH identifier of PE1 router, pseudo-link parameters, and a second label.
  • This second label is intended to be added in the header of all the data transmitted by the router PE2 to the router PE1 through the pseudo-link pw1.
  • the pseudo-link pw1 established between the router PE1 and the router PE2, the latter transmits bidirectionally data between the router PE1 and the router PE2.
  • the client equipment CE1 connected to the router PE1 is able to process the data generated by the client equipment CE2 connected to the router PE2.
  • the pairs ⁇ SAIH identifier of the PE router 1 / TAII2 identifier of the PE2 router ⁇ and ⁇ SAII2 identifier of the PE2 router / TAIH identifier of the PE1 router ⁇ constitute two FEC (Forwarding Equivalent Classes, or French equivalent transfer class), which each identify a direction of transmission of the same pseudo-link pw1.
  • a first solution consists of destroying the pseudo-link pw1 and establishing a new one capable of transmitting data conforming to the new format.
  • FIG. 2 represents a diagram of the message exchanges occurring between the router PE1 and the router PE2 when this solution is implemented.
  • the router PE1 When a data format change occurs at the level of the first client equipment CE1, the latter informs the PEl router The router PE1 then sends a message LWM1 to the router PE2 requesting the release of the resources used by the pseudo-link pw1 in the upward direction, that is to say from the router PE2 to the router PE1. On receipt of this LWM1 message, the router PE2 in turn sends, to the router PE1, a message LWM2 requesting the release of the resources used by the pseudo-link pw1 in the downward direction, that is to say the router PE1 to the PE2 router.
  • the router PE1 On receipt of the LWM2 message, the router PE1 sends, to the router PE2, a first establishment LMM1 message of a new pseudo-link. On receipt of the establishment message LMM1, the router PE2 sends a second establishment message LMM2 to the input router PE1.
  • the establishment messages LMM1 and LMM2 of the new pseudo-link each comprise an FEC making it possible to identify the new pseudo-link and the new parameters of the pseudo-link, for the meaning going back in the first message LMM1 and for the downstream direction for the second message LMM2.
  • the new pseudo-established link is able to transmit data compliant with the new format for each direction of transmission.
  • Such a solution requires, when it is implemented, an interruption of the data packet traffic between the router PE1 and the router PE2.
  • a traffic interruption is detrimental to the quality of service. This is particularly the case if the data conveyed is real-time data.
  • a second solution represented in FIG. 3, consists in establishing a second pseudo-link pw2 between the router PE1 and the router PE2.
  • the elements of this figure already described in Figure 1 have the same references and are not described again.
  • a new pseudo-link must be established between the router PE1 and the router PE2.
  • the solution that is the subject of the invention rests on the implementation of a method of data communication between a first and a second router, said routers belonging to a packet switching network, said method comprising a data transmission phase through a pseudo-link established between the first and the second router, said data being transmitted according to a parameter of said pseudo-link.
  • Such a data communication method is particular in that it comprises at least one transmission step, during the transmission phase, at the initiative of one of the two routers and intended for the other router, a request message for modifying said parameter of said pseudo-link.
  • the solution that is the subject of the invention comprises transmitting a request message for modifying a parameter of a pseudo-link according to a new data format used by a router constituting an end of the pseudo link for encapsulate data to be transmitted through the pseudo-link.
  • Such a change request message is sent by a router constituting a first end of the pseudo-link and to another router constituting a second end of the pseudo-link during a data transmission phase between the two routers at the end of the pseudo-link. through the pseudo-link.
  • the solution that is the subject of the invention does not have the drawbacks of the prior art.
  • the object of the invention does not require a service interruption to be implemented because the change request message is issued while the pseudo-link is able to transmit data.
  • the solution does not require the establishment of a second pseudolink since the change request message is not a message establishing a new pseudo-link.
  • the solution that is the subject of the invention makes it possible to modify the parameters of the pseudo-link when the format of the data changes, while maintaining the same pseudo-link, that is to say without changing the FECs of the pseudo-link in the upstream direction. or in the downward direction and without interrupting the service.
  • the latter comprises a configuration step at the end of which the router transmitting said modification request message is able to accept the request. receiving data transmitted in accordance with said modified parameter according to said modification request.
  • the sending router After sending the request message for modifying the parameter of the pseudo-link to the other router, the sending router is able to receive both data transmitted in accordance with the parameter of the pseudo-link and data emitted according to the modified parameter pseudo-link.
  • the latter comprises a reception step, implemented by the router on whose initiative said modification request message is sent, of a second request message. modifying said pseudo-link.
  • the router on whose initiative the first change request message is sent is informed of the new parameter of the pseudo-link for the downward direction and the format of the data that it must encapsulate and transmit to the second router.
  • first and second routers must be adapted to send and receive change request messages of a pseudo-link parameter.
  • said step of transmitting said modification request message is implemented by said other router in response to a first modification request message of the pseudo-link parameter.
  • the reception by the router receiving the first modification request message of a parameter of the pseudo-link triggers the transmission.
  • the invention also relates to a method of processing data transmitted through a pseudo-link established between a first and a second router, said routers belonging to a packet switching network, said method comprising a phase of data transmission to said pseudolain, said data being transmitted according to a parameter of said pseudolian.
  • Such a data processing method is particular in that it comprises, during the transmission phase: a step of reception, by at least one of the routers, of a request message for modifying the parameter of said pseudo -link,
  • the method of data processing object of the invention comprises, a marking step, implemented by said router, data to be transmitted through the pseudo-link whose parameter has been amended.
  • the router implementing the marking step informs the other router of the format change of the data.
  • said data are marked by means of a tag added at the head of said data and the tag is included in said received modification request message.
  • the configuration message received by the router includes in one of its fields a label.
  • This tag is associated with the data sent by the router through the pseudo-link whose parameters have been modified. Such a label makes it possible to identify in the data stream those which conform to the new format.
  • said data are marked by means of a sequence number.
  • the data When sent via the pseudo-link by the router, the data is assigned an identification parameter in the form of a sequence number.
  • the router When the router receives the change request message, it resets the sequence numbers so that the first data transmitted through the pseudo-link whose parameter has been changed has the sequence number one.
  • the invention further relates to a router belonging to a packet switching network, said router comprising means for transmitting data through a pseudo-link established between said router and a second router belonging to said packet switching network, said data being transmitted according to a parameter of said pseudo-link.
  • Such a particular test router in that it comprises means for sending, to the second router, a request message for modifying the parameter of said pseudo-link.
  • the latter comprises means for receiving a second request message for modifying the parameter of said pseudo-link.
  • the router which is the subject of the invention also comprises means for receiving a request message for modifying the parameter of said pseudo-link transmitted to the through said pseudo-link and means for modifying the parameter of said pseudolian, and marking means, data intended to be transmitted through the pseudo-link whose parameters are modified.
  • the invention also relates to a first computer program product downloadable from a communication network and / or recorded on a computer readable medium and / or executable by a processor, this computer program product comprising program code instructions for the implementation of the method of data communication object of the invention when said program is executed by a computer.
  • the invention also relates to a second computer program product downloadable from a communication network and / or recorded on a computer readable medium and / or executable by a processor, this computer program product comprising program code instructions for the implementation of the method of data processing object of the invention when said program is executed by a computer.
  • the invention finally relates to a signal intended to be transmitted a pseudo-link established between a first router and a second router said first and second routers belonging to a packet switching network.
  • Such a signal is particular in that it carries a request message for modification of at least one parameter of said pseudo-link.
  • the signal which is the subject of the invention, it comprises:
  • a parameter indicating that it is a modification request message for a parameter of the pseudo-link a field comprising the modified parameter of the pseudo-link.
  • FIG. 1 already described with reference to the state of the art, represents a pseudolink established according to the state of the art, between a first and a second router belonging to a packet switching network
  • FIG. 2 also described with reference to the state of the art, represents a timing diagram of exchanges of requests between a first and a second router belonging to a packet switching network, in order to delete a first pseudo established link between the two routers, and establish a second pseudo-link, according to a first solution of the prior art
  • FIG. 3 represents two pseudo-links established according to the second solution described with reference to the prior art
  • FIG. 4 represents a pseudo-link established between a first and a second router, said routers implementing the communication methods that are the subject of the invention
  • FIG. 5 represents the steps of the data communication method which is the subject of the invention.
  • FIG. 6 represents the steps of the data processing method that is the subject of the invention
  • FIGS. 7A and 7B represent modification request messages broadcast in the pseudo-link during the implementation of the solution object of FIG. the invention
  • FIG. 8 proposes a temporal diagram of change request message exchange of a pseudo-link parameter established between the first and the second router
  • FIG. 9 represents a router able to implement the communication and data processing methods that are the subject of the invention.
  • FIG. 4 shows a connection established between a first router PE1 and a second router PE2 both located at the edge of a packet switching network PSN.
  • a pseudo-link pw1 is established between the first router PE1 and the second router PE2.
  • the pseudo-link pw1 thus established makes it possible to transmit data between the router PE1 and the router PE2.
  • the data transmission can be unidirectional, that is to say from the router PE2 to the router PE1 or the router PE2 to the router PE1, or bidirectional, that is to say the router PE2 to the router PE1, upstream direction of the transmission, and the router PE1 to the router PE2, downstream direction of the transmission.
  • An example of application of the invention is the collection of traffic for a mobile network.
  • a first client equipment CE1 such as a base station whose data it transmits through the pseudo-link pw1 to the router PE2 which is itself connected to other CE2 client equipment such as a RNC (Radio Network Controller).
  • RNC Radio Network Controller
  • the establishment of the pseudo-link pw1 is at the initiative of the router PE1 and relies on the exchange of establishment messages compliant with the LDP protocol.
  • a first setup message is sent by the router PE1 to the router PE2.
  • This first setup message comprises a SAIH identifier of the input router PE1, and a TAII2 identifier of the output router PE2, a parameter of the pseudo-link, and a first label LBLO.
  • This first label LBLO must be added in the header of all the data sent by the router PE2 to the router PE1 through the pseudo-link pwl
  • Such a parameter of the pseudo-link is a function of the data format that the router PE1 is able to receive and process. Indeed, the router PE 1 processes the data transmitted by the router PE2 through the pseudo-link pw1 according to a predetermined format and then transmits them to the client equipment IEC An example of such a format is the volume of data. Thus, the "data to be wrapped and put through the pw1 pseudo-link, can be cut into blocks of 15 bits of payload or a fixed number of ATM cells.
  • the PE1 router is configured to encapsulate the data in accordance with Other examples of parameters of the pseudo-link are among others the number of a virtual channel of an ATM cell, number of ATM cells, or the number of TDM time slots.
  • the router PE2 On receipt of this first setup message, the router PE2 sends to the router PE1 a second establishment message comprising an identifier SAII2 of the router PE2, and a TAIH identifier of the router PE1, parameters of the pseudo-link, and a second label.
  • This second label is intended to be added in the header of all the data transmitted by the router PE1 to destination of the router PE2 through the pseudo-link pw1.
  • the sending of this second setup message occurs only when the pseudo-link pw1 between the routers PE1 and PE2 is bidirectional.
  • the latter transmits bidirectionally, during a phase of data transmission PH1, data in a first format between the router PE1 and the PE2 router.
  • the pairs ⁇ SAIH identifier of the router PE1 / identifier TAII2 of the router PE2 ⁇ and ⁇ identifier SAII2 of the router PE2 / identifier TAIH of the router PE1 ⁇ constitutes two FECs (Forwarding Equivalent Class, or equivalent transfer class). Identifying each a direction of transmission of the same pseudo-link pwl
  • the data communication method is implemented during a data transmission phase PH1 between the router PE1 and the router PE2 through the pseudo-link pw1.
  • the router PE1 sends to the router PE2 a first change request message SIG 1 of a pseudo-link parameter pw1 to be used for the upstream direction.
  • FIG. 7A An example of such a first GIS change request message 1 is shown in FIG. 7A.
  • This message includes an FEC ⁇ SAI11 / TAII2 ⁇ making it possible to identify the downlink direction of the pseudo-link pw1, a field containing an upDate parameter indicating that the message SIG1 is a modification request message of a pseudo-link and a field containing a new value of the pseudo-link parameter pw1 to use for the upstream direction.
  • the new value of the pseudo-link parameter pw1 is the new encapsulation format of the data to be sent to the router PE1.
  • the router PE1 is configured to accept in reception data sent by the router PE2 through the pseudo-link pw1 according to the new format, the phase of data transmission PH1 of data at the first format still in progress.
  • the router PE2 receives the first modification request message SIG1 of a pseudo-link parameter pw1.
  • the router PE2 sends, during a step E3, a second change request message SIG2 of a pseudo-link parameter pw1 to use for the downward direction. This step is triggered by the receipt of the first change request message SIG1.
  • This second message SIG2 includes an FEC ⁇ SAII2 / TAII1 ⁇ making it possible to identify the upstream transmission direction of the pseudo-link pw1, a field containing an upDate parameter indicating that the message is a request message for modification of a pseudo-link. and a field containing the new value of the pseudo-link parameter pw1 to be used for the downstream direction.
  • the router PE1 receives the second modification request message SIG2 of a pseudo-link parameter pw1 for the downstream direction.
  • FIG. 6 represents the different steps of the data processing method that is the subject of the invention.
  • the router PE2 receives, during a step F1, the first modification request message SIG1 of a parameter of the pseudo-link pw1 transmitted by the router PE1 during the step E1 of the method of data communication object of the invention.
  • the router PE2 modifies the parameter of the pseudo-link pw1 according to the indications contained in the first modification request message SIG1.
  • the router PE2 marks the blocks of data to be sent to the router PE 1 according to the modified format in order to inform the router PE1 that it has taken into account the new parameter of the pseudo-link pw1 for the rising sense.
  • This marking constitutes an implicit acknowledgment, destined for the router PE1, of the receipt of the first SIG modification request message 1 by the PE2 router.
  • the blocks of data to be sent to the router PE1 are marked, during the step F3, by the router PE2 by means of a sequence number.
  • the data blocks sent by the router PE2 to the router PE1 through the pseudo-link pw1 are marked with a sequence number whose value is incremented by one as the blocks of data are sent.
  • the router PE2 After receiving the first change request message SIG1, the router PE2 initializes the sequence numbers.
  • the router PE2 associates a sequence number equal to one to the first block of data transmitted according to the new format, the value of the sequence number being incremented by one unit at the first time. as new data blocks conform to the new format.
  • the blocks of data to be sent to the router PE1 are marked by the router PE2 by means of a first label.
  • the data blocks sent by the router PE2 to the router PE1 through the pseudo-link pw1 are marked with an LBLO tag.
  • the router PE2 adds in their header the new label LBL1. The PE2 router obtains the value of this LBL1 tag from the first change request message.
  • FIG. 7B An example of such a first configuration message in this second embodiment of the invention is shown in FIG. 7B.
  • This message includes an FEC ⁇ SAII1 / TAII2 ⁇ for identifying the pseudo-link pw1, an LBL1 tag, a field containing an upDate parameter indicating that the message is a modification request message of a pseudo-link and a field containing at least one parameter of the pseudo-link pw1.
  • step F3 the data is sent by the receiving router of the first change request message according to the new format.
  • the reception by the router PE1 of data sent by the router PE2 according to the new format constitutes an implicit acknowledgment of the reception by the PE2 router of the request message for modifying a pseudo-link parameter pw1 for the upstream direction.
  • the router PE1 no longer accepts data transmitted in accordance with the first format.
  • data is transmitted to the router PE1 through the pseudo-link pw1, it does not treat them, it rejects them.
  • router PE1 After reception by the router PE1 of the second modification request message of a parameter of the pseudo-link pw1 to be used for the downward direction during the step E4 of the communication method described above with reference to FIG. router PE1 implements the method of data processing object of the invention.
  • routers PE1 and PE2 can play indifferently the role of the initiator of the transmission of the first modification request message of a pseudo-link parameter pw1 during the implementation of the object process of the invention. 'invention.
  • FIG. 8 represents the different message exchanges occurring between the router PE1 and the router PE2 during the implementation of the solution that is the subject of the invention during a phase of transmission of data PH1 through a pseudo-user interface.
  • link pw1 allowing a bidirectional transmission of the data.
  • a data stream D1 is transmitted through the pseudo-link pw1 between the routers PE1 and PE2.
  • This data stream comprises data whose payload is 15 bits for example.
  • the parameters of the pseudo-link pw1 contained in the pseudo-link establishment messages for the upstream and downstream transmission directions indicate that the payload of the data transmitted by the pseudo-link pw1 link pw1 is 15 bits.
  • the latter transmits (E1) a first change request message SIG1 of the pseudo-link parameter pw1 for the upward transmission direction, in accordance with the invention. , to the PE2 router.
  • a first GIS message 1 comprises the new value of the pseudo-link parameter pw1 to be used for the upstream direction.
  • the format change occurring at the level of the router PE1 is for example an increase in the number of bits of the payload of the data from 15 bits to 20 bits.
  • the change request message SIG 1 indicates that the new payload of the data transmitted in the upstream direction by the pseudo-link pw1 is 20 bits.
  • the router PE2 Upon reception (E2, F1) of this first modification request message SIG1, the router PE2 modifies (F2) the parameters of the pseudo-link pw1 for the upward transmission direction.
  • This parameter is the new value of the number of payload bits of the data, here 20 bits.
  • the value of the new parameter of the pseudo-link for the upward direction can be distinct from the new value of the parameter of the pseudo-link for the downward direction, the two directions of transmission being independent of one another.
  • the router PE1 modifies (F2) the parameters of the pseudo-link pw1 to be used for the direction of downlink transmission.
  • the router PE2 In order to inform the router PE1 that the data transmitted conforms to the new format, in the first embodiment of the invention, the router PE2 initializes the sequence number to one so that the first data blocks sent to the PE1 router whose payload is 20 bits is associated with the sequence number one. These data blocks constitute the data flow D2.
  • the receiving router PE1 When the receiving router PE1 identifies the value of the sequence number associated with a data block as being the value one, it determines that the data transmitted by the router PE2 is now data whose payload is 20 bits. This constitutes an implicit acknowledgment of the reception by the router PE2 of the first modification request message SIG1.
  • the presence of the label LBL1 in header data blocks received by the router PE1 informs the latter that the data now issued by the router PE2 have a payload of 20 bits.
  • the router PE1 After transmission of the first change request message SIG 1 to the router PE ⁇ 2, the router PE1 is able to receive both encapsulated data according to the old format, that is to say blocks of data having a payload of 15 bits, and data according to the new format, i.e. data blocks having a payload of 20 bits.
  • the client devices CE1 can continue to generate during a some time data whose payload is 15 bits.
  • the pseudo-link pw1 can only transmit data packets with a payload of 20 bits
  • routers PE1 and PE2 complete the payload with stuffing bits.
  • the router transmitting the data PE1, PE2 adds 5 stuffing bits before data transmission.
  • the client equipments CE1, CE2 When the format modification consists of reducing the payload of the data, for example from 15 to 10 bits, it is necessary for the client equipments CE1, CE2 to generate data having a payload of 10 bits before implementing the method which is the object of the invention. the invention. Since the pseudo-link pw1 can only transmit data packets with a payload of 15 bits, routers PE1 and PE2 complete the payload with stuffing bits. Thus, when one of the client equipment CE1, CE2 generates data whose payload is 10 bits, the router transmitting the data PE1, PE2 adds 5 stuffing bits before sending the data until the pseudo-link pw1 has been modified according to the invention.
  • FIG. 9 represents a router PE1, PE2 capable of implementing the communication method that is the subject of the invention.
  • Such a router PE1, PE2 comprises means 10 for transmitting a request message for modifying a parameter of a pseudo-link pw1 established between it and a second router PE1, PE2 and means 11 for transmitting data.
  • the router object of the invention PE1, PE2 also comprises receiving means 40 of the modification request message and modification means 41 of the pseudo-link parameter pw1 included in a field of the modification request message.
  • the router PE1, PE2 comprises means for adding a sequence number making it possible to mark the data sent to the second router PE1.PE2.
  • the first router PE1, PE2 comprises means for adding a label LBL1, LBL2 header data to be transmitted.
  • the invention also relates to a first computer program, in particular a computer program on or in an information carrier or memory, adapted to implement the first phase of the communication method of the invention.
  • the subject of the invention is also a second computer program, in particular a computer program on or in an information or memory medium, adapted to implement the second phase of the communication method which is the subject of the invention.
  • These programs may use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code such as in a partially compiled form, or in any other form desirable for implementing the broadcast and reception methods according to the invention.
  • the information carrier may be any entity or device capable of storing programs.
  • the medium may comprise storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or a magnetic recording medium, for example a floppy disk or a disk. hard.
  • the information medium can be a transmissible medium such as an electrical or optical signal, which can be conveyed via an electric cable or optical, radio or other means.
  • the programs according to the invention may in particular be downloaded on an Internet-type network.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
EP08826779A 2007-07-19 2008-07-18 Mechanismus zur aktualisierung der parameter eines pseudolinks Withdrawn EP2179545A2 (de)

Applications Claiming Priority (2)

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FR0756625A FR2919139A1 (fr) 2007-07-19 2007-07-19 Mecanisme de mise a jour des parametres d'un pseudo-lien
PCT/FR2008/051363 WO2009016307A2 (fr) 2007-07-19 2008-07-18 Mecanisme de mise a jour des parametres d'un pseudo-lien

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EP2179545A2 true EP2179545A2 (de) 2010-04-28

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EP (1) EP2179545A2 (de)
CN (1) CN101803298A (de)
FR (1) FR2919139A1 (de)
WO (1) WO2009016307A2 (de)

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FR3081644A1 (fr) * 2018-06-22 2019-11-29 Orange Procede de decouverte de fonctions intermediaires et de selection d'un chemin entre deux equipements de communication

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US20100166005A1 (en) 2010-07-01
WO2009016307A2 (fr) 2009-02-05
FR2919139A1 (fr) 2009-01-23
WO2009016307A3 (fr) 2009-06-11
CN101803298A (zh) 2010-08-11

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