WO2000033511A1 - Procede et appareil permettant d'ameliorer la qualite de service a l'utilisateur dans des reseaux a commutation par paquets - Google Patents

Procede et appareil permettant d'ameliorer la qualite de service a l'utilisateur dans des reseaux a commutation par paquets Download PDF

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Publication number
WO2000033511A1
WO2000033511A1 PCT/SE1999/002133 SE9902133W WO0033511A1 WO 2000033511 A1 WO2000033511 A1 WO 2000033511A1 SE 9902133 W SE9902133 W SE 9902133W WO 0033511 A1 WO0033511 A1 WO 0033511A1
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WO
WIPO (PCT)
Prior art keywords
service
quality
network
user quality
endpoint
Prior art date
Application number
PCT/SE1999/002133
Other languages
English (en)
Inventor
Torbjörn MINDE
Jim Sundqvist
Bogdan Timus
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to JP2000586045A priority Critical patent/JP2002532003A/ja
Priority to EP99963719A priority patent/EP1135889A1/fr
Priority to AU20092/00A priority patent/AU2009200A/en
Publication of WO2000033511A1 publication Critical patent/WO2000033511A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2227—Quality of service monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5003—Managing SLA; Interaction between SLA and QoS
    • H04L41/5019—Ensuring fulfilment of SLA
    • H04L41/5025—Ensuring fulfilment of SLA by proactively reacting to service quality change, e.g. by reconfiguration after service quality degradation or upgrade
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/091—Measuring contribution of individual network components to actual service level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/06—Generation of reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H04L43/0847—Transmission error
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/16—Threshold monitoring

Definitions

  • the present invention relates to packet switched telecommunications networks. More specifically, the present invention relates to improving overall packet switched network performance based on the quality of service as perceived by a human end-user.
  • PSTN public switched telephone network
  • the recommendation describes a system wherein the bandwidth cannot be guaranteed.
  • bandwidth cannot be guaranteed, loss of voice packets and/or unacceptable transmission delays degrade the voice quality perceived by a human end user. Consequently, the quality of voice communications as perceived by a human end-user of a packet switched telecommunication system cannot be guaranteed by the system operator.
  • One technique for "quality of service" measurement which uses link parameters to determine the quality of a communication connection is described in European Patent Application number 0 786 883 Al by Dollin et al.
  • Dollin et al. describes a method for making "quality of service” measurements between two endpoints on an ATM network, wherein monitoring probes are connected to the communications links between the endpoints and the network.
  • Dollin et al. uses the phrase measuring the "quality of service” as a synonym with measuring a set of link parameters (including delays and bandwidth).
  • a change in a link parameter may affect the end-user quality of service of a speech connection, but may not affect the end-user quality of service of a video connection, whereas for conventional "quality of service" measurements, the changing of a link parameter would alter the conventional quality of service for both the video and speech connection. Accordingly the measurement of link parameters leads to an objective measurement of the speech quality which may or may not be an accurate indicator of the end-user quality of service.
  • Minde et al. describes the measurement of end-user quality of service in cellular networks, until now end-user quality of service has not been used in packet switched network. Further, Minde et al. fails to teach the use of end-user quality of service to identify the source of the degradation of the end-user quality of service in a packet switched network. Minde et al. also fails to teach the dynamic adaptation of a packet switched network based on end-user quality of service.
  • Exemplary embodiments of the present invention provide an arrangement and method for improving end-user quality of service for a communications connection and for a network as a whole by dynamically adapting the service and/or the traffic in response to continuously measured link parameters.
  • a method for measuring, supervising and controlling the end- user quality of the service throughout the network is described.
  • link parameters and device parameters relevant to end-user quality of service are continuously measured at endpoints and other nodes in a network.
  • the endpoints make end-user quality of service measurements.
  • the endpoints periodically send reports to a service quality supervisor (SQS) containing end-user quality of service measurements.
  • SQL service quality supervisor
  • the endpoint may also include the measured link and device parameters in the report to the SQS.
  • Other nodes in the network send reports to the SQS regarding measured link parameters.
  • the SQS continuously analyzes the reports and sends commands to the node and/or endpoint in order to dynamically improve the end-user quality of service at the node or endpoint and in the network as a whole.
  • a first objective of the present invention is to provide a more accurate and reliable measure of quality of service in packet switched networks, namely the end-user quality of service.
  • a second objective of the present invention is to provide an overall and more accurate, assessment of network performance based on end-user quality of service.
  • Yet another objective of the present invention is to maintain and/or improve the overall performance in a packet switched network as a function of the end-user quality of service measurements.
  • Figure 1 illustrates a packet based network according to an exemplary embodiment of the present invention
  • Figure 2 illustrates the primary functions of the present invention
  • Figure 3 illustrates the measuring of link and device parameters and the measurement of end-user quality of service by nodes and endpoints;
  • Figure 4 illustrates a method for measuring and reporting an endpoint' s end-user quality of service
  • Figure 5 illustrates the reception and processing of reports by the SQS
  • Figure 6 illustrates a method for identification by the SQS of the cause of quality degradation
  • Figure 7 illustrates communication between two packet networks through a pair of gateways
  • Figure 8 illustrates an exemplary procedure for improving end-user quality of service when the degradation is caused by another network
  • Figure 9 illustrates a method for the adaptation of the endpoint's service.
  • the present invention generally involves controlling the overall performance capabilities of a packet switched network, for example, the packet switched network 100 illustrated in figure 1.
  • the system of figure 1 comprises, among other components, terminals 101 and 102, packet switched core network 103, service quality supervisor (SQS) 104 and an associated storage medium 105.
  • Terminal 101 and terminal 102 also referred to herein as endpoints, may communicate with each other through the packet switched core network 103, as will be discussed below.
  • Terminals 101 and 102 may comprise telephones, computer terminals having microphones, video conferencing terminals, or any communication device capable of receiving and reproducing signals which can be percieved by human beings.
  • the SQS 104 can be implemented as a router with high-cost links (e.g., as an open shortest path first (OSPF) router which has a built-in database of the domain topology), or in an H.323 system the SQS 104 may be implemented in a gatekeeper, i.e. the entity which provides control access to the zone. Alternatively, the SQS 104 may be implemented as a standalone device.
  • the SQS 104 communicates with the other network devices through the packet switched core network 103.
  • the network may include both wireline and wireless connections and the nodes within packet switched network 100 may comprise routers, gateways, and special nodes for wireless connections (e.g., base stations).
  • Terminal 101, terminal 102 can measure link parameters, measure device parameters, make end-user quality of service measurements and send reports regarding the measured link parameters, the measured device parameters and the end-user quality of service measurements to SQS 104.
  • Figure 2 illustrates three primary functions for implementing the present invention.
  • link and device parameters are continuously measured by various nodes and endpoints in the packet switched network, according to a first primary function of the present invention.
  • the end-user quality of service is measured at the endpoints using the measured link parameters and the measured device parameters, and at the SQS using the measured link parameters, the measured device parameters and the end-user quality of service measurements sent from various nodes and endpoints in the network.
  • the endpoint and/or the SQS can identify the cause of the degradation of the end-user quality of service, according to a second primary function of the present invention.
  • the SQS dynamically improves the end-user quality of service for both individual connections and for the entire network, in accordance with a third primary function of the present invention.
  • Figure 3 illustrates the collection of link parameters and device parameter measurements by routers 303-309, and endpoints 301 and 302, and the measurement of end-user quality of service by endpoint 302 in a packet switched network, in accordance with the first primary function of the present invention.
  • endpoint 301 is transmitting an information signal to endpoint 302 through packet core network 310, which is only part of core network 103.
  • packet core network 310 which is only part of core network 103.
  • figure 3 shows endpoint 301 as a transmitter and endpoint 302 as a receiver, one skilled in the art will recognize that either endpoint can simultaneously transmit and receive information signals through packet core network 310.
  • the information signal may travel from endpoint 301 to router 303, from router 303 to router 305, and from router 305 to endpoint 302.
  • the information signal may travel from endpoint 301 to router 303, from router 303 to router 309, from router 309 to router 305, and from router 305 to endpoint 302.
  • the choice of path for the information signal may be controlled by the SQS in accordance with traffic adaptation commands, as described below. While endpoint 301 is sending an information signal, the endpoint 301 is measuring device parameters, DP T1 ...DP Tn , and link parameters, LP T1 ....LP Tn .
  • device parameters DP T1 ...DP Tn may include processing and packetizing delays, codec mode, user data rate, interleaving depth and interleaving type.
  • Link parameters LP T1 ....LP Tn can include link delay or access delay. While receiving the information signal from endpoint 301, endpoint 302 is measuring link parameters, LP R1 ....LP Rn , device parameters DP R1 DP RM , and making end-user quality of service measurements,
  • the link parameters LP R1 ....LP Rn may include estimated bit error rate (BER) and total delay.
  • Device parameters DP R1 DP RM may include buffer load, buffer status, interleaving type, decoding mode, error concealment unit, and host processing unit.
  • routers 303-309 measure link parameters, LP N1 ....LP NR , and device parameters, DP N1 DP NS .
  • link parameters, LP N1 ....LP NR can include estimated BER, link delay, access delay, unit loss, unit corruption, burst dispersion, peak- low- and mean- bandwidth.
  • Device parameters, DP N1 DP NS may include unit delay, unit delay variation, unit flush, buffer load and buffer status. Further it is noted that each node or endpoint need not measure the same number of device parameters as the number link parameters measured by the node or endpoint. The measurement of link and device parameters and the measurement of end-user quality of service by endpoints 301 and 302 is illustrated in figure 4.
  • Figure 4 illustrates the creation and transmission of end-user quality of service reports, device parameter reports and link parameter reports by an endpoint such as endpoint 302, in accordance with the first primary function of the present invention.
  • an endpoint collects and measures device parameters and link parameters.
  • the endpoint measures the end-user quality of service based upon a statistical model, in a similar fashion as described in Minde et al., but using the link parameters and device parameters relevant to the end-user quality of service for packet switched networks.
  • step 415 the results of the end-user quality of service measurements are displayed to the user of the terminal. However, step 415 is optional and may be omitted.
  • step 420 it is determined whether a time interval has elapsed and whether it is time to send a report.
  • the report will always include the end-user quality of service measurement from step 410. However, if the endpoint determines that the end-user quality of service is not acceptable, then the endpoint may send an emergency report containing the end- user quality of service measurement, the measured link parameters and the measured device parameters. If the time interval has elapsed and it is time to send a report, in accordance with the "YES" path out of decision step 420, then a report is transmitted to the SQS 104 and to endpoint 301 in accordance with step 430.
  • the SQS 104 uses the report to measure both the end-user quality of service for a specific connection and the overall network end-user quality of service.
  • the report sent to the other endpoint may contain an adapt service command, as will be described below in figure 9.
  • the endpoint of the present invention includes an emergency report feature, wherein the endpoint will send an emergency report if the measured end-user quality of service falls below an acceptable end-user quality of service threshold before it is time to send a regular report.
  • Steps 420 and 425 illustrate the emergency report feature. If it is determined that the time interval has not elapsed, in accordance with the "NO" path out of decision step 420, then it is determined whether the measured end-user quality of service is less than an acceptable end-user quality of service threshold, in accordance with step 425.
  • the process returns to step 405 for the endpoint to collect link parameters and device parameters. If the measured end-user quality of service is less then the acceptable end-user quality of service threshold, in accordance with the "YES" path out of decision step 425, then a report, containing the measured link parameters, the measured device parameters and the measured end-user quality of service is transmitted to the SQS 104 and, optionally, to the other endpoint, in accordance with step 430.
  • the end-user quality of service measurement is sent to the other endpoint in order to keep the user of the other endpoint informed about how the partner perceives the communication and adapt the service if necessary and possible, as described in figure 9 below. Similar procedures are applied at other nodes, but regarding other parameters, e.g., the traffic load for the routers and base stations.
  • the SQS 104 has two principal tasks which correspond to the second and third primary functions of the present invention.
  • the first principal task of the SQS involves receiving link parameters, device parameters and end-user quality of service reports, determining problems with the end-user quality of service based upon the reported end-user quality of service measurement, the link parameters, and the device parameters, and identifying the source of any such problems with the help of a traffic model.
  • the first principal task of the SQS 104 is illustrated in figure 5 below.
  • the second principal task of the SQS 104 involves supervision of the packet switched network 100, which corresponds to the third primary function of the present invention, namely dynamic adaptation of the network. Supervision of the packet switched network 100, in turn, generally involves the dynamic adaptation of traffic and the dynamic adaptation of services.
  • the dynamic adaptation of traffic may, for example, involve rerouting communications (i.e., data packets) around congested routers and/or congested gateways, limiting the real-time and/or the non real-time traffic, and joint optimization of the wireless connection with the help of a radio network access controller in case such a radio connection is used.
  • Dynamic adaptation of service which is only sent to endpoints in the network, includes commanding the transmitting endpoints to adjust one or more device transmission parameters (e.g. , transmission bit-rate, codec type, ect)
  • the supervision function is illustrated in figures 5-10 and described in more detail below.
  • Figure 5 illustrates a technique by which the SQS 104 receives and processes end-user quality of service reports, device parameter reports and link parameter reports from the various network devices, such as endpoints 101 and 102, and dynamically adapts the network in accordance with the second and third primary functions of the present invention.
  • the SQS 104 initially determines whether it has received a new report, in accordance with step 505.
  • the report is issued from an endpoint in accordance with the method shown in figure 4. If it has been determined that a new report has not been received by any of the various network devices, in accordance with the "NO" path out of decision step 505, the SQS 104 continues to monitor for new reports.
  • the SQS 104 analyzes the received report to identify the source, i.e., the network device that sent the report, as shown by step 510.
  • the received report is used by the SQS 104 to measure the end-user quality of service using a statistical model in the same fashion as described in Minde et al. but using parameters specific to packet switched networks.
  • the SQS 104 determines whether the end-user quality of service as measured and reported, is less than a predetermined end-user quality of service threshold. If it is determined that the end-user quality of service is less than the predetermined end user quality of service threshold, in accordance with the "YES" path out of decision step 520, the SQS 104 generates and forwards an adapt service command to the network device that is transmitting the signals in order to change one or more device parameters related to the transmission of the signal from the source, as indicated in step 525.
  • the implementation of the adapt service command at an endpoint is described below in greater detail with figure 9.
  • the SQS 104 determines that the end-user quality of service measurement, as reported, is greater than or equal to the predetermined end user quality of service threshold, in accordance with the "NO" path out of decision step 520, or after the SQS 104 has issued an adapt service command, the SQS 104 uses the end-user quality of service measurement in the current report as well as end- user quality of service measurements in a number of previously received reports from other network devices to measure an overall end-user quality of service for the network, in accordance with step 530.
  • the overall end-user quality of service for the network represents one method by which the network could be optimized. The network operator may choose to optimize the network according to different factors, such as optimization for higher paying customers.
  • the SQS 104 in order to optimize the network as the network operator chooses, may derive an overall average network quality of service measurement, an average quality of service measurement for a particular area in the network, a standard deviation from the mean overall network quality of service measurement, the average quality for a particular set of connections or any number of other alternatives.
  • the SQS 104 After measuring the overall end-user quality of service for the network, the SQS 104, in decision step 535, determines whether the overall end-user quality of service for the network is less than a predetermined acceptable network quality threshold. If the SQS 104 determines that the overall network quality of service is greater than or equal to the predetermined acceptable network quality threshold, in accordance with the "NO" path out of decision step 535, then, in step 560, the measurements are used for updating the status of the traffic model. The status of the network and the relevant parameters from the report are stored in storage medium 105. Then the control returns to step 505 where the SQS 104 awaits a new report.
  • the network model is based upon the known topology of the network and has as input variables the parameters reported from the endpoints and nodes in packet switched network 100.
  • the topology of the network and the continuously updated state of the model are stored in storage medium 105 of SQS 104, and are used for monitoring the traffic and detecting the sources of the problems in the packet switched network 100.
  • the SQS receives a group of link parameter reports indicating unacceptable delays in the transmission of packets and that the reports are originating from nodes which are within the same general area of the network, then the SQS will have identified the source of the degradation of the network speech quality. It is understood that the SQS 104 can monitor only the packet switched network which it has supervision over, as will be described below in conjunction with figures 7 and 8.
  • the SQS 104 determines that the overall end-user quality of service for the network is less than the predetermined acceptable network quality threshold, in accordance with the "YES" path out of decision step 535, then the SQS 104 so informs the network operator, in accordance with step 540.
  • the SQS 104 After informing the network operator that the overall end-user quality of service for the network is less than the predetermined acceptable network quality threshold, the SQS 104 performs one of several SQS functions, i.e. , identification and correction of the cause of the end-user quality of service degradation as indicated in step 545. After an SQS function has been performed, it is determined whether there are more SQS functions to be performed, in accordance with step 550.
  • FIG. 6 illustrates a first exemplary SQS function, wherein the cause of degradation for the overall end-user quality of service for the network is identified, in accordance with the second primary function of the present invention.
  • the SQS uses data from the reports, i.e., end-user quality of service, link parameters and device parameters to update the network model.
  • the SQS attempts to identify the cause of the degradation in the overall network end-user quality of service measurement using the updated network model.
  • the SQS issues an adapt traffic command to the node or an adapt service command to the endpoint, which is causing the degradation to the overall network end-user quality of service, as indicated in step 615, in accordance with the third primary function of the present invention.
  • Traffic adaptation may be accomplished according to various methods, among which are a reduce low priority load command and an adapt traffic command.
  • the reduce low priority load command can be issued for limiting the non real-time or the low priority packets traffic, if a priority differentiation protocol is implemented in the network, such that a higher network capacity is available for the real-time service.
  • the adapt traffic command is issued to routers so that they adapt the paths for the services.
  • FIG 8 illustrates an exemplary SQS function in which the SQS corrects end-user quality of service degradation caused by another network wherein the other network is connected to the SQS through a gateway, in accordance with the second and third primary functions of the present invention.
  • the communications link 790 may comprise a public switched telephone network (PSTN), a global system for mobile communications network (GSM), or an integrated services digital network (ISDN) communications link.
  • PSTN public switched telephone network
  • GSM global system for mobile communications network
  • ISDN integrated services digital network
  • the first function is to convert the communication to a format which is compatible with communications link 790.
  • the second function is to monitor the quality of the information signals sent to the other network as well as the information signals received from the other network.
  • the SQS 705 analyzes reports received from gateway 720 or terminal 710.
  • SQS 705 determines whether the end-user quality of service degradation originates outside of network 715.
  • the network model is analyzed to determine the source of the degradation.
  • SQS 705 does not successfully determine that the cause of the network degradation originates outside of network 715, in accordance with the "NO" path out of decision step 815, then the process returns to step 550 in order to determine whether other SQS functions are to be performed in accordance with the network model. However, if it is successfully determined that the cause of the degradation occurs outside of network 715, in accordance with the "YES" path out of decision step 815, then SQS 705 notifies SQS 755 of the degradation of the end-user quality of service, using a command in step 820. In step 825, the operator is informed that the cause of the degradation occurred outside of network 715 and that a command has been sent to network 765. Conversely, if SQS 755 determines that a cause of degradation originates from packet network 715, then SQS 755 would inform SQS 705 of the degradation of the communication, so that SQS 705 can take corrective measures.
  • Figure 9 illustrates the implementation of the adapt service command described in figure 5 step 525, which is sent from the SQS 104 or from another endpoint to the source of transmission, in accordance with the third primary function of the present invention.
  • the adapt service command instructs the network device transmitting the information signals to adjust its transmission of the information signals, so as to effect an improvement in the end- user quality of service at the receiving network device, i.e., the network device responsible for sending the SQS 104 the present report.
  • the command can be both restrictive, e.g., by requiring a lower bit-rate injected into the network and permissive, e.g., by allowing a higher bit-rate injected into the unloaded network.
  • the network device transmitting the information signals may change the coding mode, i.e., the coding scheme employed to encode the information signals or, alternately, decrease the transmission bit rate.
  • the endpoint determines whether a command has been sent from the SQS. If the SQS has not sent a command, in accordance with the "NO" path out of decision step 905, then the endpoint determines if it has received information from the other endpoint, in accordance with step 910. The other end-user may require the change of the data rate and/or the codec and this action may be completed in the limits imposed by the last command received from the SQS.
  • step 910 If the other endpoint has not received information from another endpoint, in accordance with the "NO" path out of decision step 910, then the process returns to step 905. However, if information has been received from the other endpoint, in accordance with the "YES” path out of decision block 910, or if a command has been received from the SQS, in accordance with the "YES” path out of decision block 905, then the service is adapted, in accordance with step 915.
  • the present invention has been described as using speech quality measurements to send commands to improve online, i.e.
  • the operator can use this data, or analysis, to modify and adjust the network, e.g., add new units, change the hardware, change the infrastructure, etc. , that represent off-line optimizations of the network.
  • the service quality supervisor is implemented as a software package in a server. Further, in a purely exemplary embodiment the service quality supervisor may be located in the same place where the billing functions are performed.
  • the present invention has been described in with regard to the measurement and correction of information signals and speech signals, one skilled in the art will recognize that the present invention can be implemented to measure and correct any type of quality. For instance, the present invention can measure the perceived quality of a graphic file, a video clip, or an Internet web page sent over the packet switched network.
  • the present invention has been described by reference to communication between two endpoints, the present invention is equally applicable to multipoint communication, wherein more than two endpoints are communicating in a conference arrangement.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Environmental & Geological Engineering (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un procédé et un système permettant d'améliorer la qualité de service à l'utilisateur dans un réseau à commutation par paquets. Les divers noeuds du réseau envoient au superviseur de réseau des rapports l'informant de leur qualité de service à l'utilisateur, qui est une estimation de la qualité du point de vue de l'utilisateur humain. Le superviseur qualité analyse lesdits rapports et envoie des ordres au(x) noeud(s) qui a(ont) envoyé ledit (lesdits) rapport(s) afin d'améliorer la qualité de service à l'utilisateur au niveau du noeud et de l'ensemble du réseau à commutation par paquets. Les noeuds comportent des terminaux émetteurs et récepteurs, des routeurs et des passerelles. Des mesures de paramètres de liaison, de paramètres de dispositif et de la qualité de service à l'utilisateur sont également inclus dans lesdits rapports.
PCT/SE1999/002133 1998-12-02 1999-11-19 Procede et appareil permettant d'ameliorer la qualite de service a l'utilisateur dans des reseaux a commutation par paquets WO2000033511A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2000586045A JP2002532003A (ja) 1998-12-02 1999-11-19 パケット交換網における端末利用者品質条件の改善方法及び改善装置
EP99963719A EP1135889A1 (fr) 1998-12-02 1999-11-19 Procede et appareil permettant d'ameliorer la qualite de service a l'utilisateur dans des reseaux a commutation par paquets
AU20092/00A AU2009200A (en) 1998-12-02 1999-11-19 Method and apparatus for improving end-user quality of service in packet switched networks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20338098A 1998-12-02 1998-12-02
US09/203,380 1998-12-02

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WO2000033511A1 true WO2000033511A1 (fr) 2000-06-08

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US8689105B2 (en) 1998-12-24 2014-04-01 Tekla Pehr Llc Real-time monitoring of perceived quality of packet voice transmission
US8068437B2 (en) 1998-12-24 2011-11-29 Verizon Business Global Llc Determining the effects of new types of impairments on perceived quality of a voice service
US6807156B1 (en) 2000-11-07 2004-10-19 Telefonaktiebolaget Lm Ericsson (Publ) Scalable real-time quality of service monitoring and analysis of service dependent subscriber satisfaction in IP networks
EP1364501A2 (fr) * 2001-02-07 2003-11-26 Worldcom, Inc. Procede et systeme d'evaluation de la qualite de signaux vocaux commutes par paquets
EP1364501A4 (fr) * 2001-02-07 2006-07-26 Worldcom Inc Procede et systeme d'evaluation de la qualite de signaux vocaux commutes par paquets
EP1267584A1 (fr) * 2001-06-15 2002-12-18 Ascom AG Evaluation de la qualité de service par comparaison entre la qualité de service actuelle et la qualité de service convenue entre l'utilisateur et le réseau de télécommunication
US9578360B2 (en) 2001-09-10 2017-02-21 Telefonaktiebolaget Lm Ericsson (Publ) Information presentation device and method
EP1802121A3 (fr) * 2001-09-10 2008-10-01 Telefonaktiebolaget LM Ericsson (publ) Dispositif et procédé de fourniture d'informations
EP1802120A3 (fr) * 2001-09-10 2008-10-01 Telefonaktiebolaget LM Ericsson (publ) Dispositif et procédé de présentation d'informations
EP1298926A1 (fr) * 2001-09-10 2003-04-02 Telefonaktiebolaget L M Ericsson (Publ) Appareil et procédé pour la présentation d'informations
EP1322085A3 (fr) * 2001-12-21 2004-10-13 Siemens Aktiengesellschaft Procédé de surveillance de la qualité de service dans un reseau multimédia a commutation de paquets
EP1322085A2 (fr) * 2001-12-21 2003-06-25 Siemens Aktiengesellschaft Procédé de surveillance de la qualité de service dans un reseau multimédia a commutation de paquets
WO2004010648A1 (fr) * 2002-07-22 2004-01-29 Telecom Italia S.P.A Technique et systeme permettant de controler la qualite de service dans des reseaux de telecommunications, composants et produits informatiques en rapport
US7917611B2 (en) 2002-07-22 2011-03-29 Telecom Italia S.P.A. Method and system for monitoring the quality of service in telecommunication networks, components and compute products thereof
WO2004017574A1 (fr) * 2002-08-16 2004-02-26 Cellglide Ltd Controle de la signalisation de la commande de flux dans un reseau cellulaire aux fins de gestion de services et de dimensionnement de reseau
WO2004019588A1 (fr) * 2002-08-26 2004-03-04 Koninklijke Philips Electronics N.V. Dispositif internet fournissant des informations de liaison et de qualite
EP1567874A2 (fr) * 2002-09-20 2005-08-31 Nortel Networks Limited Systeme et procede de gestion d'un service de reseautage optique
EP1567874A4 (fr) * 2002-09-20 2010-11-24 Nortel Networks Ltd Systeme et procede de gestion d'un service de reseautage optique
EP1619917A4 (fr) * 2003-04-11 2007-03-14 Matsushita Electric Ind Co Ltd Systeme de communication et procede de communication
EP1619917A1 (fr) * 2003-04-11 2006-01-25 Matsushita Electric Industrial Co., Ltd. Systeme de communication et procede de communication
US9661142B2 (en) 2003-08-05 2017-05-23 Ol Security Limited Liability Company Method and system for providing conferencing services
EP1654625A2 (fr) * 2003-08-14 2006-05-10 Telcordia Technologies, Inc. Optimisation de trafic autoip dans des systemes de telecommunications mobiles
EP1654625A4 (fr) * 2003-08-14 2011-01-12 Telcordia Tech Inc Optimisation de trafic autoip dans des systemes de telecommunications mobiles
US7599307B2 (en) 2003-08-21 2009-10-06 Vidiator Enterprises Inc. Quality of experience (QoE) method and apparatus for wireless communication networks
WO2005022852A1 (fr) * 2003-08-21 2005-03-10 Vidiator Enterprises Inc. Mesures de la qualite d'experience (qoe) destinees a des reseaux de communication sans fil
EP1697814A2 (fr) * 2003-11-19 2006-09-06 McData Corporation Gestion de la congestion de tissus
EP1697814A4 (fr) * 2003-11-19 2009-08-05 Mcdata Corp Gestion de la congestion de tissus
WO2007000633A1 (fr) * 2005-06-29 2007-01-04 Nokia Corporation Evaluation de qualite pour reseau de telecommunications
EP1798897A1 (fr) * 2005-12-14 2007-06-20 NTT DoCoMo, Inc. Appareil et procédé pour déterminer des politiques de transmission pour multiples applications de types différents
US7668191B2 (en) 2005-12-14 2010-02-23 Ntt Docomo, Inc. Apparatus and method for determining transmission policies for a plurality of applications of different types
US8819216B2 (en) 2006-05-02 2014-08-26 Skype User interface
AU2007245390B2 (en) * 2006-05-02 2011-09-29 Microsoft Technology Licensing, Llc User interface for handling call quality in a communication system
US9524088B2 (en) 2006-05-02 2016-12-20 Skype User interface
GB2438017A (en) * 2006-05-02 2007-11-14 Skype Ltd Controlling communication quality by generating instructions providing a remedy to users to improve communication quality
US8917712B2 (en) * 2006-08-11 2014-12-23 Fujitsu Limited Communication terminal device, base station, and communication method
US20080037502A1 (en) * 2006-08-11 2008-02-14 Fujitsu Limited Communication terminal device, base station, and communication method
US7773510B2 (en) 2007-05-25 2010-08-10 Zeugma Systems Inc. Application routing in a distributed compute environment
WO2009015461A1 (fr) * 2007-08-01 2009-02-05 Zeugma Systems Canada, Inc. Surveillance de qualité perçue par abonné et par session
US7706291B2 (en) 2007-08-01 2010-04-27 Zeugma Systems Inc. Monitoring quality of experience on a per subscriber, per session basis
US8245266B2 (en) 2007-09-27 2012-08-14 Skype User interface
US8374102B2 (en) 2007-10-02 2013-02-12 Tellabs Communications Canada, Ltd. Intelligent collection and management of flow statistics
US20130205164A1 (en) * 2012-02-02 2013-08-08 Hitachi Ltd. Computer system and management method thereof
US8886784B2 (en) * 2012-02-02 2014-11-11 Hitachi, Ltd. Computer system and management method thereof
US9544201B2 (en) 2013-03-27 2017-01-10 Telefonaktiebolaget Lm Ericsson (Publ) Quality of experience in communication networks
WO2014154263A1 (fr) * 2013-03-27 2014-10-02 Telefonaktiebolaget L M Ericsson (Publ) Qualité d'expérience dans les réseaux de communication
WO2015105408A1 (fr) * 2014-01-08 2015-07-16 Wafina Sdn. Bhd. Système autodidacte intelligent permettant l'amélioration continue de la qualité et de la performance de conférences multimédias
EP3099014A4 (fr) * 2014-02-13 2017-01-11 Huawei Technologies Co., Ltd. Procédé et appareil de détection d'un réseau de communication mobile
RU2649746C2 (ru) * 2014-02-13 2018-04-04 Хуавей Текнолоджиз Ко., Лтд. Способ и устройство диагностики сети мобильной связи
US10075870B2 (en) 2014-02-13 2018-09-11 Huawei Technologies Co., Ltd. Mobile communications network detection method and apparatus

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