WO2010003365A1

WO2010003365A1 - Method and device for measuring quality of service of internet protocol transmission network

Info

Publication number: WO2010003365A1
Application number: PCT/CN2009/072659
Authority: WO
Inventors: 胡国杰
Original assignee: 华为技术有限公司
Priority date: 2008-07-07
Filing date: 2009-07-07
Publication date: 2010-01-14
Also published as: CN101321092A

Abstract

A method and a device for measuring the quality of service of the Internet protocol transmission network are provided. The method includes: establishing a measuring connection with the measuring response terminal; carrying out the measurement with the measuring responding terminal according to the upper layer message of the Internet protocol layer transmitted in the measuring connection; calculating the quality index of service of the Internet protocol transmission according to the measured result.

Description

Method and device for measuring service quality of internet protocol transmission network

This application claims priority to Chinese Patent Application No. 200810040651.8, entitled "A Method and Apparatus for Measuring the Quality of Internet Protocol Transmission Network Service" submitted by the Chinese Patent Office on July 7, 2008, the entire contents of which are hereby incorporated by reference. The citations are incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for measuring QoS (Quality of Service) of an Internet Protocol (IP) transport network. Background technique

IP transport networks play a very important role in today's data communications. For example, if there are multiple devices in the home or enterprise that want to access the network through the wireless network, you need to access the IP transmission network through the Access Point (AP). For the networking diagram of the AP, see Figure 1. The AP passes the home gateway HGW (Home). The Gateway accesses the IP transport network and connects to the Access Gateway (AG) of the mobile core network through the IP transport network. The service of the AP is carried over the IP layer. The quality of the AP depends largely on the QoS capabilities of the IP transport network. At this stage, the IP transport network is not perfect in supporting QoS. In order to ensure the service quality of the AP, the IP transport network must be required to provide corresponding QoS capabilities. At present, the methods for measuring the QoS of an IP transmission network are mainly as follows.

One of them is a method of controlling the information protocol ICMP (Internet Control Message Protocol) through the Internet. Internet Control Information Protocol The principle of the ICMP Ping method is to use ICMP Echo protocol packets to detect network connectivity. The local host sends an ICMP Echo request packet. After receiving the request packet, the destination host returns an ICMP Echo packet. The local host receives the response >3⁄4 text, and through calculation, judges the general situation of the network. Another method is to use the IPMP (IP Measurement Protocol) measurement method. The measurement entity of this method is the measurement host, response system and forwarding system.

In the process of the present invention, the inventor has found that the ICMP ping method uses a router to ping packets with a lower priority, resulting in a queuing delay, and the measurement result error is relatively large. Moreover, some routers will filter ICMP packets to prevent DOS attacks. The destination host receives ICMP Ping packets. When it is easy to be attacked; IP IP measurement measurement protocol IPMP measurement method is a measurement protocol for routers. To achieve IPMP measurement targets, routers must support them.

Summary of the invention

Embodiments of the present invention provide a method and apparatus for measuring quality of service of an Internet Protocol transport network, which effectively improves the accuracy of measuring QoS of an IP transport network, and also avoids the limitation that the measurement network must have router support.

An embodiment of the present invention provides a method for measuring a service quality of an internet protocol transmission network, including: establishing a measurement connection with a measurement response end;

And performing, according to the established measurement connection, performing measurement with the measurement response end, and performing measurement on the measured measurement request message and the measurement response message as an upper layer protocol of the Internet Protocol layer;

According to the result of the measurement, an Internet Protocol transmission network service quality indicator is obtained.

An embodiment of the present invention provides a measurement apparatus, including:

Establishing a measurement connection unit for establishing a measurement connection with the measurement peer device;

a measuring unit, configured to perform measurement between the measurement response end and the measurement response end based on the established measurement connection, and perform measurement to transmit the measurement request message and the measurement response message to be an upper layer protocol of the Internet Protocol layer;

And a calculating unit, configured to calculate an internet protocol transmission network service quality indicator according to the measured result.

The embodiment of the invention provides an access point, such as the above measuring device.

The embodiment of the invention provides an access gateway, such as the above measuring device.

The method for measuring the quality of service (QoS) of the IP transmission network, the measurement device, the access point AP, and the access gateway AG are provided in the embodiment of the present invention, and the QoS measurement is performed on the upper layer IP packet of the router with higher priority, and the QoS measurement is improved. The measurement accuracy is based on the measurement between the measurement initiator and the measurement response, and the number of measurement devices involved is small, which enhances the versatility of the measurement method.

DRAWINGS

Figure 1 is a networking diagram of an AP;

2 is a schematic diagram of a networking in the first embodiment of the present invention; FIG. 3 is a flowchart of a method for measuring QoS of an IP transmission network according to Embodiment 1 of the present invention; FIG. 4 is a flowchart of a method for measuring QoS of an IP transmission network according to Embodiment 3 of the present invention; FIG. a measurement data map for calculating QoS capability in Example 3;

6 is a composition diagram of a measuring device according to Embodiment 4 of the present invention;

7 is a composition diagram of a measurement initiation device according to Embodiment 5 of the present invention;

8 is a composition diagram of a first measurement unit of a measurement initiation device according to Embodiment 5 of the present invention; FIG. 9 is a composition diagram of a measurement response device according to Embodiment 6 of the present invention;

10 is a composition diagram of a second measurement unit of a measurement response device according to Embodiment 6 of the present invention; and FIG. 11 is a composition diagram of a communication system according to Embodiment 9 of the present invention.

detailed description

Embodiments of the present invention provide a method and apparatus for measuring service quality of an internet protocol transmission network, where

In the IP transport network, the transport control protocol TCP (Transport Control Protocol) packet, the User Datagram Protocol (UDP) packet, or the Stream Control Transmission Protocol (SCTP) are used. The priority of the processing of the essay is high, so that the measurement error is relatively small. By measuring the measurement between the initiator and the measurement response end, the measurement result is finally obtained, and the support of the router is not required, so that the measurement is versatile. For a better understanding, the following is a detailed description.

Embodiment 1 A method for measuring QoS of an IP transmission network, see FIG. 2, the measurement initiator and the measurement response end communicate through an IP network. The measurement initiator can be a client device, such as a user host, an AP, and the like. The measurement response end can be a router, a host, an access gateway AG, or a network server.

The method flow is shown in Figure 3, including the steps:

A1. The measurement initiator establishes a measurement connection with the measurement response end.

The measuring initiator establishes a measurement connection with the measurement response end, and the measurement initiator sends a measurement start request to the measurement response end, and the measurement response end responds to the measurement initiation end with the measurement start response message to determine the two-party measurement establishment information, The measurement setup information includes measuring connection information, and may also include measuring traffic model information and establishing a dedicated data channel for performing QoS measurement.

The measurement start request message and the measurement start response message may be TCP, UDP, SCTP or Ping packets. The measurement connection information includes information such as a measurement packet, an IP address, and a port number used in the data transmission process, wherein the measurement packet may be a TCP, UDP, or SCTP packet.

Measuring traffic model information includes measuring measurement traffic sent by the initiator, such as lMbps, 2Mbps, 3Mbps, and the like. The measurement of the flow model information may further include measuring the number of flow models and the order in which the measurements are performed on the measured flow models, wherein the order in which the measurements are performed on the measured flow models may be determined by negotiation between the measurement initiator and the measurement response.

A2. The measurement initiator and the measurement response end perform measurement by transmitting the upper layer IP packet in the measurement connection established in step A1.

The measurement initiator sends a measurement request message to the measurement response end according to the measurement data traffic model determined in step A1, and the measurement response end sends a measurement response message to the measurement initiator. The measurement request message includes execution measurement information, such as the serial number and time stamp of the measurement request message sent.

The upper layer of the IP layer includes a transport control protocol TCP (Transport Control Protocol) packet, a User Datagram Protocol (UDP) packet, and a Stream Control Transmission Protocol (SCTP).

The measurement request packet and the measurement response packet are one of the upper layer packets of the IP layer, and may be a Transport Control Protocol (TCP) message, a User Datagram Protocol (UDP) message, or a flow control transmission. The protocol SCTP (Stream Control Transmission Protocol) is the text.

A3. The measurement initiator calculates the QoS capability of the IP transmission network according to the measurement result in the A2 step. The calculating the QoS capability of the IP transport network includes calculating one or more of round trip time, uplink unidirectional jitter, downlink unidirectional jitter, and packet loss rate. For the QoS capability of the IP transmission network, only one indicator can be calculated, and some indicators or all indicators can be calculated. Which ones are selected as the basis for the judgment ability can be determined by the user's needs.

In the embodiment of the present invention, the measurement is performed by using TCP, UDP or SCTP packets, which effectively avoids the disadvantage of low priority of the ping message by the router in the ICMP ping method, and improves the measurement accuracy; The corresponding request is initiated, and the response responder is made to respond accordingly, and the measurement method can be supported without relying on the router.

A method for measuring QoS of an IP transmission network according to Embodiment 2 of the present invention is based on Embodiment 1. Above, between steps A2 and A3, the step of removing the measurement connection is added.

The specific implementation steps of the second embodiment are as follows:

Bl, similar to A1, the measurement initiator establishes a measurement connection with the measurement response end.

B2, similar to A2, performs measurement by the measurement initiator and the measurement response via the established measurement connection.

B3. After the measurement is completed, the measurement initiator and the measurement response end are removed from the measurement connection. The specific process of this step includes:

B31. The measurement initiator sends a measurement end request message to the measurement response end.

B32. After receiving the measurement end request message, the measurement response end closes the measurement connection established in step B1;

B33. The measurement response end sends a measurement end response message to the measurement initiator, where the message includes the measurement result of the measurement response end.

The measurement result counted in the step B33 may include one or more of a one-way packet loss rate in the uplink direction, an uplink one-way jitter, and an uplink transmission time.

The measurement end request message and the measurement end response message may be TCP, UDP, SCTP or ping messages.

B4. The measurement initiator calculates the QoS capability of the IP transmission network according to the result. It should be understood that step B3 can also be performed after step B4.

The method for measuring the QoS capability of the IP transport network disclosed in the second embodiment effectively avoids the disadvantage that the router has low priority for the ping packet in the ICMP ping method, and improves the measurement accuracy; and the corresponding request is initiated by the measurement initiator. The method of measuring the response of the responding end can support the measurement method without relying on the router. Moreover, the step of removing the measurement connection increases the safety of the measurement target system, that is, the measurement response end, making it difficult to be attacked.

The second embodiment is specifically applied to measure the QoS capability of the IP transmission network between the AP and the AG in the case of the AP networking. It can be understood that the method can also be used for measuring the QoS capability of an IP transmission network between other communication devices. The usage system of other communication devices is not limited to UMTS, CDMA or GSM.

Embodiment 3 of the present invention provides a method for measuring QoS of an IP transmission network, where the measurement initiator is For the AP, the measurement response is AG. It can be understood that the measurement initiator can also be an AG, and the measurement response end can also be an AP. In order to guarantee the quality of service of the AP, the QoS capabilities of the IP transport network can be measured in two cases as described below, including:

1. Start the optimization network. When the AP starts, it can optimize the network by measuring the transmission QoS of the IP transmission network, determine whether the transmission network meets the QoS specifications required by the AP service, and improve the QoS capability of the transmission network according to the measurement result.

2. Fault detection. In the event of a failure, or a user complaint, the QoS of the IP transmission network is measured, and the detection result is used to locate the fault, and it is determined whether the IP transmission network cannot meet the QoS index required by the AP service, or the AP has failed.

In the embodiment of the present invention, the upper layer IP packet used for the QoS measurement of the IP transmission network is described by using a UDP packet as an example. It can be understood that other types of IP layer upper layer packets, such as TCP packets, can also be used. SCTP, etc., the method of calculating the QoS index by using other upper layer packets of the IP layer and the method of measuring the power using the UDP packet.

Referring to FIG. 4, Embodiment 3 includes the following steps:

Cl, the measurement initiator AP establishes a measurement connection with the measurement response terminal AG, including:

Cll. The AP sends a measurement start request message to the AG. The measurement start request message is a UDP packet, and the packet includes an IP address, a UDP port number, and a measurement traffic model for AP measurement.

After receiving the measurement start request message, the C12 determines the measurement establishment information between the AP and the AG measurement, and opens the UDP port number. The measurement establishment information may include measuring the connection information, and may further include measuring the traffic model information.

In the embodiment of the present invention, the AP may preset the measurement connection information and the measurement traffic model information, and carry the measurement connection information and the measurement traffic model information in the measurement start request message, and send the message to the measurement response end. After receiving the measurement start request message, the AG directly uses the measurement connection information and the measurement traffic model information included in the measurement start request message to perform measurement;

The AG determines the AP and the AG measurement establishment information, and the AP may carry the measurement capability information that can be provided by the AP together in the measurement start request message, and send the measurement start request message to the AG, and the AG receives the measurement start. After requesting the message, send the selected measurement connection information to the AP according to its own capabilities. And measuring the flow model information, in the subsequent measurement process, the AP and the AG use the measurement connection information and the measurement flow model information to perform measurement;

It can be understood that there are many other possibilities in the actual application of the process of determining the measurement connection information and measuring the flow model information, which is not limited herein.

The measurement connection information determined in the embodiment of the present invention includes a measurement packet, an IP address, and a used by both parties.

The UDP port number, the measurement traffic model, is measured in the order of 1 Mbps, 2 Mbps, 3 Mbps, 4 Mbps, 5 Mbps, and 6 Mbps from low to high.

C13. The AG responds to the AP with a measurement start response message, and the packet includes an IP address and a UDP port for the AG measurement.

C2: The IP layer upper layer packet is transmitted in the measurement connection established in the step C1. In the embodiment, the IP layer upper layer packet is a UDP packet, and the measurement initiator AP and the measurement response end AG perform measurement, including:

C21. The AP sends a measurement request message with a sequence number SN (Sequence Number) corresponding to the measurement request message to the AG, and records the local time T1 and SN of the measurement request message. It should be understood that the measurement request message may also include a local time T1.

The initial value of the sequence number SN is 1, that is, the sequence number SN corresponding to the first measurement request message sent to the AG is 1, and each time a measurement request message is sent, the SN will be in the original number. Increase by 1. The AP records the T1 and the SN, and records the sequence of the T1 and SN and the measurement request packets. The sequence of the T1 and the SN is not fixed. In a set of measurement traffic models, the number of measurement request packets sent may be set according to actual conditions, and may be the time used by the AP to send all the measurement request packets to the AG and send all measurement request packets. It is not limited; it can also be determined by setting the measurement time of the measurement flow model, in which the AP sends a measurement request message to the AG. In the embodiment, the latter is used, that is, the AP and the AG set the time during the establishment of the measurement connection, and the AP sends a measurement request message to the AG within the set time.

C22. The AG receives the measurement request message, records the local time T2 of the measurement request message, and measures the sequence number SN in the request message, and counts the number of received measurement request messages, that is, the received SN. The number is calculated to calculate the uplink packet loss rate. When the measurement request message further includes the local time T1 at which the AP sends the measurement request message, the AG also records the local time T1 to calculate the uplink time according to T1 and Τ2. Delay or uplink unidirectional jitter.

C23. The AG sends a measurement response message to the AP, where the measurement response message includes the time T2 when the AG receives the measurement request message, the local time T3 when the measurement response message is sent, and the information obtained from the measurement request message. The serial number SN; it should be understood that when the required QoS indicator includes only the round-trip delay and/or the packet loss rate, the measurement response may not include the time T2 and the time at which the AG receives the measurement request. This measurement responds to the local time T3 at 4 艮.

C24. The AP receives the measurement response message, records the local time T4 of the measurement response message, and matches the corresponding measurement request according to the sequence number SN in the measurement response message.

When the traffic models are different, the rate of measurement request packets sent by the AP is different. The rate of measurement response packets sent by the AG is also different. When the flow model includes one set, after performing step C24, the process of performing the measurement is completed. When the flow model includes multiple groups, step C21 to step C24 are to complete the measurement of a measurement flow model phase. For the determined measurement models to be tested, the measurement models are measured one by one in descending order. That is, first measure the 1Mbps measurement model, perform steps C21 to C24, measure the 2Mbps measurement model, repeat C21 to C24, and so on. The time taken for the measurement of each measurement model is configurable, ie each measurement model needs to be measured within the specified time. When all the determined measurement models to be tested are completed, the execution measurement process between the AP and the AG is completed.

C3. The measurement initiator AP sends a measurement end request message to the measurement response end AG, and closes the measurement connection between the AP and the AG, including:

C31. The measurement of the measurement model is completed, and the AP sends a measurement end request message to the AG.

C32. The AG receives the measurement end request message and closes the UDP port for measurement.

The measurement response end AG can also calculate the uplink QoS capability indicator according to the result recorded in the step C2. Step C3 can also include:

C33: The AG sends a measurement end response message to the AP, where the measurement end response message may include any one or more combinations of QoS indicators such as uplink packet loss rate, uplink unidirectional jitter, and uplink delay calculated by the AG. . It should be understood that, in the case where the transmission delay is allowed, the obtained QoS indicator can also be transmitted through the measurement response in C23.

C4. The measurement initiator AP calculates the QoS capability of the IP transmission network according to the measurement result in the C2 step. It can be understood that step C4 can also be performed before step C3. The process of calculating the QoS capability of the IP transport network is as shown in FIG. 5 , wherein the measurement initiator can be an AP, other devices on the client, such as a user host or an AG, and the measurement response end can be an AG, a server, a router, or AP and so on. In the figure, T1 is the local time when the measurement initiator sends the measurement request message, T2 is the local time when the measurement response end receives the measurement request message, and T3 is the local time when the measurement response end sends the measurement response message. T4 is the local time at which the measurement initiator receives the measurement response message. The measurement initiator sends a measurement request to the measurement response end, and the direction is an uplink direction. Correspondingly, the direction in which the measurement response end sends the measurement response to the measurement initiator is a downlink direction.

In the embodiment of the present invention, the QoS indicator of the IP transport network may include, but is not limited to, the indicators listed in the second embodiment. If a detailed report of the capability is not required, one or more of the QoS indicators may be considered, including Which QoS indicators are determined by the system settings. It should be understood that when the measured QoS indicator includes only the packet loss rate, the local time of transmitting and/or receiving the measurement request message and/or the measurement response message may not be transmitted and recorded.

The QoS indicators are calculated as follows:

(1) Round-trip delay: The round-trip delay refers to the time difference between the measurement initiator from sending a measurement request message to receiving a corresponding measurement response message. Its value is T4 minus Tl.

(2), uplink one-way jitter: jitter is the change of delay. The time difference of Τ2 of a certain message minus T1 is taken as the first uplink time difference SI, S1 can also be defined as the uplink delay, and the time difference of Τ2 of the other 4艮 minus T1 is taken as the second uplink time difference S2, S2 minus S1 The difference is the upstream one-way jitter.

(3) Downward one-way jitter: The time difference of Τ4 minus Τ3 of a certain message is taken as the first downlink time difference W1, that is, the downlink delay, and the time difference of 另一个4 minus Τ3 of the other 4艮 is taken as the second downlink time difference.

The difference between W2 and W2 minus W1 is the downlink one-way jitter.

(4) Measurement of packet loss rate: The packet loss rate is the percentage of lost packets and the number of request packets. The packet loss rate includes one-way packet loss rate and two-way packet loss rate. The one-way packet loss rate includes uplink loss. Packet rate and downlink packet loss rate. The measurement initiator sends a measurement request message with a sequence number SN to the measurement response end, and the sequence number of the first measurement request message sent is 1, and each time a message is sent, the serial number attached to the message Add 1 , the measurement response end counts the uplink packet loss rate according to the lost sequence number, and the measurement initiator counts the two-way packet loss rate according to the lost sequence number. Then, the downlink packet loss rate is obtained according to the following calculation formula. The formula is as follows: Downlink packet loss rate = two-way packet loss rate - uplink packet loss rate

It should be understood that, in the foregoing description of the metric of the IP transmission network QoS, the QoS indicator is for a set of measurement traffic models, and for the measurement of the QoS capability of the IP transmission network having multiple sets of measurement traffic models, The QoS capabilities of each set of measurement traffic models in the IP transport network are calculated separately to understand the QoS capabilities of the IP transport network under various traffic models.

The method for measuring the QoS capability of the IP transport network provided in Embodiment 3 of the present invention implements the measurement of the QoS of the IP transport network in the AP networking. It should be understood that the method can also be used for the measurement of QoS capabilities of IP transport networks between other communication devices. Through the method provided by the embodiment of the present invention, the UDP packet in the upper layer of the IP layer is used as the measurement packet, the measurement is performed, the measurement data is recorded and received, and the QoS capability is calculated according to the obtained measurement data. The third embodiment provides a more accurate QoS capability of the IP transmission network, while providing a more general measurement method.

The foregoing is a description of the method provided by the embodiment of the present invention. The following describes the measuring device in the embodiment of the present invention. The fourth embodiment of the present invention provides a measuring device. Referring to FIG. 6, the following specifically includes:

Establishing a measuring connection unit 10 for establishing a measurement connection with the measuring opposite device;

The measuring unit 20 is configured to perform measurement by using an IP layer upper layer message transmitted on the measurement connection; and the calculating unit 30 is configured to calculate an IP transmission network QoS indicator according to the measurement result of the measurement unit.

It can be understood that the above measuring device can be either a measurement initiator or a measurement response terminal in practical applications. The following describes the device as a measurement initiator and a measurement response terminal in combination with an embodiment.

Embodiment 5 is a measurement initiation apparatus for measuring QoS capability of an IP transmission network. Referring to Fig. 7, the following units are included: First, the measurement connection unit 71, the first measurement unit 72, and the first calculation unit 74 are established.

The first establishing measurement connection unit 71 is configured to establish a measurement connection with the measurement response device, and specifically includes: sending a measurement start request message, where the measurement start request message includes measurement establishment information of the measurement initiation device, where the measurement establishment is The information includes measurement connection information, and the measurement establishment information may further include: information for measuring the flow model; receiving a measurement start response message sent by the measurement response device, where the measurement start response includes a measurement establishment information of the measurement response device, where The measurement is built The information includes measurement connection information, and the measurement establishment information may further include measuring traffic model information; and establishing a measurement connection with the measurement response device according to the received measurement start response message. The measurement start request message and the measurement start response message may be in the form of a TCP message, a UDP message, an SCTP message, or a ping message format.

The measurement initiating device may further include a flow control unit 75 for controlling the measurement of the measured flow model by the first measuring unit 72 according to the measured flow model information determined by the first established measurement connection unit 71.

After the first measurement connection unit 71 completes the measurement connection, the flow control unit 75 acquires the measurement flow model information in the measurement establishment information determined in the first establishment measurement connection unit 71, where the measurement flow model may be a group or It is multiple groups. When the measurement flow model is a plurality of groups, the flow control unit 75 may control the measurement unit to measure the measurement flow model in sequence according to the measurement flow model information in the first established measurement connection unit 71, and complete measurement of a set of measurement models, according to The sequence described performs measurements on the next measured flow model. The sequence is recorded in the measurement traffic model information acquired by the first establishing measurement connection unit 71.

The following is a description of performing a set of measurement flow model measurements on the first measurement unit 72.

a first measurement unit 72, configured to perform measurement between the measurement initiation device and the measurement response device after establishing a measurement connection with the measurement response device; the message used in performing the measurement includes a measurement request message and a measurement response message; The measurement request packet and the measurement response packet are the IP layer upper layer packets, including the TCP packet, the UDP packet, or the SCTP packet format. The first measuring unit 72 includes: a recording unit 821, a serial number management unit 822, a statistical unit 823, a transmitting unit 825, and a receiving unit 826, see Fig. 8.

The recording unit 821 in the first measuring unit 72 is configured to record the local time T1 of the transmission measurement request message, and the serial number management unit 822 is configured to record the serial number SN of the transmitted measurement request message, and add the SN to the measurement. The request message is sent to the measurement response device. The serial number management unit 822 increments the SN value every time the measurement initiating device sends the measurement request message, for example: the sequence number SN when the measurement request is sent for the first time is 1, and the measurement request is sent for the second time. ^ The serial number SN of the text is 2, and so on. The sending unit 825 is configured to send a measurement request message, where the measurement request message includes a sequence number SN corresponding to the measurement request, and may also include a local time T1 for transmitting the measurement request message. The maximum value of the sequence number SN of the measurement request message sent by the sending unit 825 may be determined by the measurement establishment information in the first established measurement connection unit 71 when the measurement flow model needs to be measured. For example, the maximum value of the sequence number SN of the measurement request sent by the sending unit 825 may be determined by the measurement traffic model information in the measurement establishment information in the first establishment measurement connection unit 71, the measurement connection information and the measurement flow. The model information may include the number of measurement request messages sent in one or each set of measurement traffic models, or may set the measurement time of one or each set of measurement traffic models, and the sending unit 825 sets the set time within the set time. The rate sends a measurement request message, and the number of the measurement request message is the number of measurement request messages sent within the set time of the executed measurement traffic model. It should be understood that the measurement request message sent by the sending unit 825 The maximum value of the serial number SN can also be determined by the measurement connection information in the measurement establishment information in the first establishment measurement connection unit 71.

When the receiving unit 826 of the first measurement unit 72 receives the measurement response message corresponding to the measurement request message, the receiving unit 826 can also acquire the time T2 of the measurement response message that the measurement response device receives the measurement request message. The local time Τ3 when the measurement response message is sent; the recording unit 721 is further configured to record the local time Τ4 of the measurement response message received, and the statistic unit 823 is configured to match the corresponding sequence number SN according to the received measurement response message. Measure the SN of the request message and count the number of response packets.

The first calculating unit 74 is configured to: after the first measurement unit 72 completes the measurement, acquire the measurement result from the first measurement unit 72, and calculate a capability indicator of the QoS; wherein the acquired measurement result includes: T1, Τ2, Τ3, Τ4, and The number of measured response packets is calculated. The calculated QoS indicators include any one or more of two-way delay, one-way delay, one-way delay jitter, and two-way packet loss rate.

The above description is a process in which the first measurement unit 72 performs a set of measurement flow model measurement. If the measurement flow model in the measurement establishment information is a plurality of groups, the flow control unit 75 follows the measurement sequence of the measurement flow model recorded in the measurement establishment information. Instructing the first measurement unit 72 to measure the next set of flow models. The first calculating unit 74 calculates a QoS capability indicator of the set of traffic models according to the measurement result of the next set of traffic models. The QoS capability indicator of the IP transport network is composed of QoS capability indicators of multiple sets of traffic models. It should be understood that if the measurement establishment information includes only one set of measurement traffic models, the QoS capability indicator of the IP transmission network is composed of the QoS capability indicators of the group of measurement traffic models.

The measurement initiating device further includes a first off measurement connection unit 73, and the first off measurement connection unit 73 For closing the measurement connection established by the first established measurement connection unit 71 after the first measurement unit 72 completes the measurement.

It should be understood that when the measured QoS indicator includes only the packet loss rate, the local time for transmitting and/or receiving the measurement request message and/or the measurement response message may not be transmitted and recorded.

A measurement initiation apparatus for measuring QoS capability of an IP transmission network according to Embodiment 5 of the present invention, the apparatus may be a communication device having the function modules described above, such as an access point AP, a user host, an access gateway AG, and the like.

A measurement initiating apparatus for measuring the QoS capability of an IP transport network provided by Embodiment 5, wherein the apparatus performs measurement by using a TCP, UDP or SCTP message and a measurement response apparatus, thereby effectively avoiding the router to ping in the ICMP Ping method. The shortcoming of low priority of the message improves the measurement accuracy. Secondly, it can also have the function of closing the measurement connection, ensuring the safety of the measurement target system and not being easily attacked.

Embodiment 6 of the present invention further provides a measurement response device for measuring QoS of an IP transmission network. Referring to FIG. 9, the measurement response device includes a second established measurement connection unit 91 and a second measurement unit 92.

In the measurement response device of the embodiment, the second establishing measurement connection unit 91 is configured to establish a measurement connection with the measurement initiating device, and specifically includes: receiving a measurement start request message sent by the measurement initiating device, and transmitting a measurement start response The message is sent to the measurement initiating device, that is, the measurement connection between the measurement response device and the measurement initiating device is completed; the measurement start request message and the measurement start response message can use TCP packets, UDP packets, and SCTP packets. Text or Ping message.

a second measuring unit 92, configured to perform measurement with the measurement initiating device after establishing a measurement connection with the measurement initiating device; the measuring comprises receiving the measurement request message, and sending the measurement response message; the second measuring unit 92 includes The second recording unit 101, the second transmitting unit 103, and the second receiving unit 104 are shown in FIG. The second measuring unit 92 is configured to perform measurement by the measurement connection established by the second establishing measurement connecting unit 91, the second receiving unit 104 receives the measurement request message sent by the measurement initiating device, and the second recording unit 101 records the measurement response device receiving the measurement. The time T2 of the request message, the local time 发送3 when the measurement response message is sent, and the serial number in the measurement request message. The measurement request message and the measurement response message use the upper layer packet of the IP layer, and the upper layer packet of the IP layer may include a TCP packet, a UDP packet, or an SCTP packet format. The second sending unit 103 is configured to send a measurement response message, where the measurement response message includes a time T2 when the measurement response device receives the measurement request message, a local time T3 when the measurement response message is sent, and the acquired measurement request message. The serial number SN in .

The second measurement unit 92 may further include a second statistical unit 102 for counting the number of received SNs.

The measurement response device may further include a second calculating unit 94, configured to calculate any one of a QoS indicator such as an uplink packet loss rate, an uplink one-way jitter, and an uplink delay after obtaining the measurement result of the second statistical unit 102 or Several.

It should be understood that the second statistical unit 102 in the second measurement unit 92 may also be located in the second calculation unit 94.

The measurement response device may further include a second closed connection unit 93, configured to: when receiving the measurement end request message sent by the measurement initiation device, close the measurement connection, send a measurement end response message to the measurement initiator; and secondly close the connection unit The measurement end response message sent by 93 further includes the QoS indicator obtained in the second calculating unit 94. It should be understood that, in the case where the transmission delay is allowed, the QoS indicator obtained in the second calculation unit 94 can also be transmitted by measuring the response > 3⁄4 text.

A measurement response apparatus for measuring QoS capability of an IP transmission network according to Embodiment 6 of the present invention may be a router, a host, an access point AP, an access gateway AG, or a network server. The device performs measurement by using the TCP, UDP or SCTP message and the measurement initiating device, and effectively avoids the disadvantage that the router has low priority of the Ping message in the ICMP Ping method, and improves the measurement accuracy;

Secondly, it can also have the function of closing the measurement connection, ensuring the safety of the measurement target system and not being easily attacked.

The seventh embodiment of the present invention further provides an access point AP, where the access point AP includes the measurement device described in Embodiment 4 or the measurement initiation device described in Embodiment 5. It can be understood that the access point is The AP may also include the measurement initiating device described in Embodiment 6.

The eighth embodiment of the present invention further provides an access gateway AG, which includes the measurement device described in the fourth embodiment, or the measurement response device described in the seventh embodiment. It can be understood that The access gateway AG may also include the measurement initiating device described in Embodiment 6.

An access point AP or an access gateway AG provided by Embodiments 7 and 8 of the present invention, the AP or the AG performs measurement by using TCP, UDP or SCTP packets and the measurement response device, thereby effectively avoiding the use of ICMP Ping. In the method, the router has the disadvantage of lower priority of the ping packet, which improves the measurement accuracy. Secondly, it can also have the function of closing the measurement connection, ensuring the security of the measurement target system and not being easily attacked.

Embodiment 9 of the present invention also provides a communication system, see Fig. 11, including a measurement initiating device 111 and a measurement response device 112. The measurement initiation device 111 and the measurement response device 112 establish a measurement connection by transmitting a TCP packet, a UDP packet, an SCTP packet, or a ping packet, and may also be other types of packets, which are not limited herein; The measurement connection established by the device 111 and the measurement response device 112, the measurement initiation device 111 and the measurement response device 112 perform measurement by transmitting a measurement TCP message, a UDP message or an SCTP message; the measurement initiation device 111 and the measurement response device 112 are based on The measurement result obtained after the measurement is performed, and the QoS capability of the IP transmission network is calculated. The measurement initiating device 111 and the measurement response device 112 in the communication system can also close the measurement connection established by the measurement initiating device 111 and the measurement response device 112.

The measurement initiating device 111 may be the measurement initiating device described in the fifth embodiment, and the measurement response device 112 may be the measurement response device described in the sixth embodiment. It can be understood that the communication system can also include an access point AP and an access gateway AG, wherein the access point AP serves as a measurement initiator, the access gateway AG serves as a measurement response end, or the access gateway AG serves as a measurement initiator. The access point AP acts as a measurement response end.

A communication system is provided in Embodiment 9 of the present invention, in which the measurement initiating device 111 performs measurement by using a TCP, UDP or SCTP message and the measurement response device 112, thereby effectively avoiding the use of the router to ping packets in the ICMP Ping method. The disadvantage of low priority improves measurement accuracy;

A method, system, and apparatus for measuring the quality of the Internet Protocol transport network service provided by the embodiments of the present invention are described in detail. Those skilled in the art can understand that all or part of the steps in the foregoing method can be implemented through the program. To instruct the relevant hardware to complete, the process described The sequence may be stored in a computer readable storage medium, and when executed, the program includes the following steps: establishing a measurement connection with the measurement response end;

Performing, according to the measurement connection, a measurement between the measurement response end and the measurement layer by transmitting an upper layer IP packet;

Calculating an IP transport network QoS indicator based on the measured result.

The program can also perform the measurement methods described in the method embodiments of the present invention.

The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like. It is to be noted that the description of the above embodiments is only for helping to understand the method of the present invention and its core ideas; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in specific embodiments and applications. In the above, the contents of this specification are not to be construed as limiting the invention.

Claims

Rights request

A method for measuring quality of service of an internet protocol transmission network, comprising: establishing a measurement connection between a measurement response end;

2. The method for measuring the quality of service of an internet protocol transmission network according to claim 1, wherein the upper layer packet of the Internet Protocol layer is a transmission control protocol packet, a user datagram protocol packet, or a flow control transmission protocol packet. Any one of the three.

The method for measuring the quality of service of the Internet Protocol transport network according to claim 1, wherein the measuring between the performing and the measuring response terminal based on the established measurement connection comprises: recording and transmitting the measurement request message Local time T1 and serial number;

Sending a measurement request message including the sequence number to the measurement response end;

Receiving a measurement response message corresponding to the measurement request message that includes the sequence number;

Recording the local time T4 of receiving the measurement response message;

Then, obtaining the Internet Protocol transport network quality of service indicator according to the measured result includes: calculating a round trip delay of the transport network according to the recorded local time T1 and the local time T4.

4. The method for measuring quality of service of an internet protocol transmission network according to claim 3, wherein said performing measurement with said measurement response terminal based on said established measurement connection further comprises: transmitting each time After completing the measurement request, the serial number is incremented;

Sending a measurement request message including the incremented sequence number to the measurement response end;

Receiving a measurement response message sent by the measurement response end;

And determining, according to the sequence number in the measurement response message, the sequence number of the corresponding measurement request message, and obtaining the number of the measurement request message sent and the number of the received measurement response message;

Then obtaining the service quality indicator of the Internet Protocol transmission network according to the result of the measurement, and further And calculating a bidirectional packet loss rate of the transmission network according to the number of the measurement request messages obtained and the number of the received measurement response messages.

The method for measuring the quality of service of the Internet Protocol transport network according to claim 4, wherein the performing the measurement with the measurement response terminal based on the established measurement connection further comprises: receiving according to the receiving The measurement response message corresponding to the measurement request message of the sequence number is obtained, and the time T2 and the measurement response end of the measurement response message received by the measurement response end included in the measurement response message are obtained. Sending the time T3 of the measurement response message;

The obtaining the Internet Protocol transmission network service quality indicator according to the result of the measurement further includes: calculating an uplink delay, an uplink one-way jitter, and a downlink single according to the obtained local time T1, local time T2, time T3, and time T4. Any combination of four or more of the jitter and downlink delays.

The method for measuring the quality of service of the Internet Protocol transport network according to claim 3, wherein the performing the measurement with the measurement response terminal based on the established measurement connection further comprises: receiving according to the receiving And obtaining a measurement response message corresponding to the measurement request message of the sequence number, acquiring a local time T1 in the measurement measurement request message included in the measurement response message, and a sequence number of the measurement request message, and The time T2 when the measurement request message is received, where the measurement request message is a measurement request message corresponding to the measurement response end;

The obtaining the Internet Protocol transmission network service quality indicator according to the result of the measurement further includes: calculating an uplink packet loss rate and an uplink according to the local time T1, the sequence number of the measurement request, and the time T2. Any one of unidirectional jitter and uplink delay or any combination of more than one.

The method of claim 1, wherein the method further comprises: after performing the measurement with the measurement response end, the method further comprising:

A measurement end request message is sent, and the measurement connection between the measurement response end is closed.

The method for measuring the quality of service of the Internet Protocol transport network according to claim 1, wherein the establishing and measuring connection between the measuring and the responding end comprises:

Send a measurement start request message; Receiving a measurement start response message sent by the measurement response end;

A measurement connection is established based on the measurement start request message and/or the measurement establishment information in the measurement start response message.

9. The method of measuring quality of service of an internet protocol transmission network according to claim 8, wherein the measurement establishment information comprises measurement connection information and measurement traffic model information.

10. A measuring device, comprising:

The measuring device according to claim 10, further comprising:

The measuring connection unit is closed for closing the measurement connection established by the establishing measurement connection unit.

The measurement device according to claim 10, wherein the measurement unit comprises: a sending unit, configured to send, to the measurement response end, a measurement request message including the serial number, the measurement request The message contains a serial number;

a receiving unit, configured to receive a measurement response message corresponding to the measurement request message that includes the sequence number;

The serial number management unit is configured to record the measurement request text serial number, and increment the serial number after each transmission completes the measurement request;

a recording unit, configured to record a local time T1 at which the transmitting unit sends the measurement request message, and a local time T4 at which the receiving unit receives the measurement response message;

The computing unit is specifically configured to calculate a round-trip delay of the transmission network according to the recorded local time T1 and the local time T4.

The measuring device according to claim 12, wherein the transmitting unit is further used Sending a measurement request message including an incremented sequence number to the measurement response end;

The receiving unit is further configured to receive the measurement response message sent by the measurement response end;

a statistic unit, configured to match a sequence number of the corresponding measurement request message according to the sequence number in the measurement response message, thereby obtaining the number of the received measurement response message;

The computing unit is further configured to calculate a bidirectional packet loss rate of the transmission network according to the obtained number of received measurement response messages.

The measuring device according to claim 12, wherein the establishing measurement connection unit is further configured to determine measurement traffic model information;

The measuring device further includes a flow control unit configured to control the measurement of the measured flow model by the measuring unit according to the measured flow model information determined by the establishing the measuring connection unit.

The measurement device according to claim 12, wherein the receiving unit is further configured to receive a measurement response message, and acquire a measurement request that is included in the measurement response message and that is sent by the sending unit. a sequence number of the message, a local time T2 at which the measurement peer device receives the measurement request message, and a local time T3 at which the measurement peer device transmits the measurement response message; the recording unit further The local time T2 for receiving the measurement request by the measurement peer device obtained by the recording receiving unit and the local time T3 when the measurement peer device sends the measurement response message;

The calculating unit is further configured to calculate, according to the local time T1, the local time Τ2, the time Τ3, and the time 记录4 recorded by the recording unit, any one of the uplink delay, the downlink delay, the uplink unidirectional jitter, and the downlink unidirectional jitter. Item or any combination of more than one item.

The measuring device according to claim 10, wherein the measuring unit comprises: a second receiving unit, configured to receive a measurement request message and obtain a sequence number included in the measurement request message;

a second recording unit, configured to record a local time 接收 received by the measurement request, a serial number SN of the measurement request message acquired by the second receiving unit, and a measurement corresponding to the measurement request message The local time of answering the message is Τ 3; a second sending unit, configured to send a measurement response message, where the measurement response message includes the local time T2, T3, and the acquired sequence number;

The measurement request message and the measurement response message are upper layer messages of the Internet Protocol layer.

An access point, comprising the measuring device according to any one of claims 10 to 16.

An access gateway, comprising the measuring device according to any one of claims 10 to 16.