General packet radio service tunnel performance monitoring
Arrangements include methods and systems for enabling collection of end to end performance information of individual tunnels in a GPRS. According to one aspect, a GTP-U sender node is configured to provide to a GTP-U receiver node a sequence number for a G-PDU to enable determination of a first set of one-way performance data of a GTP-U tunnel to be monitored. The GTP-U sender node may further be configured to provide an exit timestamp for a G-PDU to enable determination of a second set of one-way performance data of the GTP-U tunnel to be monitored. Either one or both of the sender node and the receiver node may send G-PDU performance monitor records to a GTP-U performance monitor collector.
1. A system for enabling collection of end-to-end performance information for individual general packet radio system tunneling protocol user, GTP-U, tunnels established between GTP-U nodes, the system comprising:
a GTP-U sender node configured to:
provide a sequence number for each of a plurality of GTP protocol data units, G-PDU, to enable determination of a first set of one-way performance data of a GTP-U tunnel to be monitored;
exchange tunnel endpoint identifiers, TEID, with a GTP-U receiver node to select one GTP-U tunnel to be monitored at a time to enable selective detection of performance of individual GTP-U tunnels; and
send a request message to the GTP-U receiver node to configure an expected GTP-U performance monitoring behavior, the request message selectively specifying whether a performance monitoring, PM, collection method is one of a one point GTP-U collection method and a two point GTP-U collection method to indicate whether the GTP-U receiver node is an end node for collecting performance monitoring data.
2. The system of claim 1 , wherein the GTP-U sender node is further configured to provide an exit time stamp for a G-PDU, to enable determination of a second set of one-way performance data of the GTP-U tunnel to be monitored.
3. The system of claim 2 , wherein the second set of one-way performance data includes at least one of one-way packet delay and packet delay variation statistics.
4. The system of claim 1 , wherein the first set of one-way performance data includes at least one of one-way packet loss, packet mis-ordering, and packet duplicate statistics.
5. The system of claim 1 , wherein the GTP-U sender node is further configured to initiate a sequence counter to assign a sequence number to each outgoing G-PDU for the GTP-U tunnel to be monitored.
6. The system of claim 5 , wherein the sequence number intended for performance monitoring is included in a GTP-U header.
7. The system of claim 2 , wherein the exit time stamp intended for performance monitoring is included in one of a GTP-U header and GTP-U extension header.
8. The system of claim 2 , further comprising:
a GTP-U performance monitor, PM, collector in communication with the GTP-U sender node, the GTP-U PM collector being configured to collect PM data from the GTP-U sender node, the PM data including the sequence number and exit time stamp of the G-PDU.
9. The system of claim 1 , wherein the request message further includes at least one of a subscriber reference identifier, packet loss threshold, an initial sequence number, a last sequence number, a number of packets to monitor, diffserv code point, DSCP, priority code point, PCP, and initial time-to-live, TTL.
10. The system of claim 1 , wherein the GTP-U sender node is further configured to receive a response message from the GTP-U receiver node at an end of the GTP-U tunnel to be monitored.
11. The system of Claim 1 , further comprising a control function, the control function being configured to receive a response message from the GTP-U receiver node at an end of the GTP-U tunnel to be monitored.
12. The system of claim 1 , wherein the GTP-U sender node is further configured to activate tunnel monitoring in one of a control mode and a data mode, wherein in the control mode, the GTP-U sender node is further configured to exchange control messages with the GTP-U receiver node at an end of the GTP-U tunnel to be monitored, and wherein in the data mode, the GTP-U sender node is further configured to signal a start of performance monitoring by including at least one of a sequence number and a time stamp in a G-PDU.
13. The system of claim 12 , wherein in the data mode, the GTP-U sender node is further configured to signal a termination of performance monitoring by no longer including the at least one of the sequence number and the time stamp in a G-PDU.
14. The system of claim 2 , further comprising:
a GTP-U receiver node configured to receive the sequence number and the exit time stamp of the G-PDU and to compute an arrival time stamp indicating arrival of the G-PDU.
15. A system for enabling collection of end-to-end performance information for individual general packet radio system tunneling protocol user, GTP-U, tunnels established between GTP-U nodes, the system comprising:
a GTP-U receiver node configured to:
receive a sequence number for each of a plurality of GTP protocol data units, G-PDU;
exchange tunnel endpoint identifiers, TEID, with a GTP-U sender node to select one GTP-U tunnel to be monitored at a time to enable selective detection of performance of individual GTP-U tunnels; and
send a request message to the GTP-U receiver node to configure an expected GTP-U performance monitoring behavior, the request message selectively specifying whether a performance monitoring, PM, collection method is one of a one point GTP-U collection method and a two point GTP-U collection method to indicate whether the GTP-U receiver node is an end node for collecting performance monitoring data.
16. The system of claim 15 , wherein the GTP-U receiver node is further configured to receive an exit time stamp, and to assign an arrival time stamp to each received G-PDU.
17. The system of claim 15 , wherein the GTP-U receiver is further configured to trigger a notification of performance degradation based on a statistical analysis of the collected PM data.
18. The system of claim 15 , further comprising:
a GTP-U performance monitor, PM, collector in communication with the GTP-U receiver node, the GTP-U PM collector configured to collect PM data from the GTP-U receiver node, the PM data including the sequence number, an exit time stamp and an arrival time stamp.
19. The system of claim 18 , wherein the GTP-U PM collector is further configured to process data received from the GTP-U receiver node concerning performance of a GTP-U tunnel being monitored, the data including one of one-way packet delay, one-way packet delay variation, one-way packet loss, one-way packet mis-ordering, and the one-way packet duplicate statistics produced by the GTP-U receiver node.
20. The system of claim 18 , wherein the GTP-U PM collector is further configured to trigger a notification of performance degradation based on a statistical analysis of the collected PM data.
21. A method of collecting end-to-end performance data for individual general packet radio system tunneling protocol user, GTP-U, tunnels established between GTP-U nodes, the method comprising:
exchanging tunnel endpoint identifiers between a GTP-U receiver unit and a GTP-U sender unit to select one GTP-U tunnel to monitor at a time to enable selective detection of performance of individual GTP-U tunnels;
receiving at the GTP-U receiver unit at least one GTP protocol data unit, G-PDU, having an exit time stamp and a sequence number placed in a header by the GTP-U sender unit;
sending a request message to the GTP-U receiver node to configure an expected GTP-U performance monitoring behavior, the request message selectively specifying whether a performance monitoring, PM, collection method is one of a one point GTP-U collection method and a two point GTP-U collection method to indicate whether the GTP-U receiver node is an end node for collecting performance monitoring data;
assigning an arrival time stamp to each of the at least one G-PDU; and
determining at least one statistical metric concerning the at least one G-PDU based on at least one of the exit time stamp, the sequence number and the arrival time stamp.
22. The method of claim 21 , wherein the at least one statistical metric includes at least one of a sequence number of a first received G-PDU, a sequence number of a last received G-PDU, an arrival time stamp of the first received G-PDU, an arrival time stamp of the last received G-PDU, and a number of received G-PDUs.
23. A system for enabling collection of end-to-end performance information for Control and Provisioning of Wireless Access Points, CAPWAP, protocol data channels established between CAPWAP nodes, the system comprising:
a CAPWAP data sender configured to:
provide a sequence number for a CAPWAP data packet to enable determination of a first set of one-way performance data of a CAPWAP data channel to be monitored;
exchange endpoint identifiers with a CAPWAP receiver to select one CAPWAP data channel to be monitored at a time to enable selective detection of performance of individual CAPWAP data channels;
send a request message to the CAPWAP receiver to configure an expected performance monitoring behavior, the request message selectively specifying whether a performance monitoring, PM, collection method is one of a one point GTP-U collection method and a two point GTP-U collection method to indicate whether the GTP-U receiver node is an end node for collecting performance monitoring data.
24. The system of claim 23 , wherein the CAPWAP data sender is further configured to provide an exit time stamp for a CAPWAP data packet to enable determination of a second set of one-way performance data of the CAPWAP data channel to be monitored.