摘要:
According to one exemplary embodiment, a method for determining the forward and reverse available capacity or tight link capacity of an IP path from a single endpoint includes the steps of: transmitting, from a source IP endpoint node toward a destination IP endpoint node, a forward packet train including a first plurality of IP test packets over the forward IP path; and receiving, at the source IP endpoint node, a corresponding reverse packet train from the destination IP endpoint node, the reverse packet train including a second plurality of IP test packets over the reverse IP path each of which correspond to a respective one of the first plurality of IP test packets. For those IP path capacity measurements embodiments which are TWAMP-based, no changes are needed to the TWAMP control protocol, e.g., since exemplary embodiments make use of padding octets to transfer additional information which can be used for available IP path capacity and tight IP link capacity calculations.
摘要:
According to one exemplary embodiment, a method for determining the forward and reverse available capacity or tight link capacity of an IP path from a single endpoint includes the steps of: transmitting, from a source IP endpoint node toward a destination IP endpoint node, a forward packet train including a first plurality of IP test packets over the forward IP path; and receiving, at the source IP endpoint node, a corresponding reverse packet train from the destination IP endpoint node, the reverse packet train including a second plurality of IP test packets over the reverse IP path each of which correspond to a respective one of the first plurality of IP test packets. For those IP path capacity measurements embodiments which are TWAMP-based, no changes are needed to the TWAMP control protocol, e.g., since exemplary embodiments make use of padding octets to transfer additional information which can be used for available IP path capacity and tight IP link capacity calculations.
摘要:
A wireless communications network comprises a wireless network controller coupled to a packet gateway. An indication of congestion of network resources is communicated between the wireless network controller and the packet gateway. In response to the indication of congestion of network resources, one of the wireless network controller and packet gateways adjusts packet data flow between the wireless network controller and the packet gateway.
摘要:
A method and system for measuring the performance of the end-to-end mobile subscriber connection is disclosed. Test traffic originating from the network is sent to the mobile device and the mobile device acting as a test traffic reflector includes current radio bearer conditions that may be impacting the end-to-end performance of the subscriber connection within the test traffic that is returned back to the source. The radio access node acting as a test traffic interceptor includes current radio cell conditions that may be impacting the end-to-end performance of all subscriber connections in the cell within the test traffic that is returned back to the source. The test equipment or controller collects, calculates and reports the IP test performance towards the mobile device and radio node with correlation to the radio bearer and radio cell performance.
摘要:
A method and system for transporting packets between an access node and a core node via a proxy node. The access node has an access node address, the core node has a core node address, and the proxy node has a proxy node address. A first packet for transmission to the core node is received from the access node. The first packet includes a first source address field including the access node address and a first destination address field including the core node address. An uplink static mapping entry with a longest address prefix matching the access node address in the first source address field is selected. The uplink static mapping entry is associated with the proxy node address. The access node address in the first source address field is replaced with the proxy node address associated with the uplink static mapping entry.
摘要:
Methods and systems for probing General Packet Radio System (GPRS) Tunneling Protocol (GTP) links in a communication network are disclosed. According to principles described herein, originator and responder nodes (endpoints) are configured to use a probing interval that can be changed dynamically to adapt the probing frequency to the prevailing conditions measured and/or capabilities available at the originator and/or the responder. According to a broad aspect, a method for a network node includes receiving a probing request message originating from a first peer node via a GTP link, the probing request message containing a request indication for a probing interval recommendation for probing the GTP link, in response to the probing request message received, determining a probing interval recommendation for probing the GTP link and sending a probing response message to the first peer node via the GTP link, the probing response message containing the probing interval recommendation determined.
摘要:
Methods and systems for probing General Packet Radio System (GPRS) Tunneling Protocol (GTP) links in a communication network are disclosed. According to principles described herein, originator and responder nodes (endpoints) are configured to use a probing interval that can be changed dynamically to adapt the probing frequency to the prevailing conditions measured and/or capabilities available at the originator and/or the responder. According to a broad aspect, a method for a network node includes receiving a probing request message originating from a first peer node via a GTP link, the probing request message containing a request indication for a probing interval recommendation for probing the GTP link, in response to the probing request message received, determining a probing interval recommendation for probing the GTP link and sending a probing response message to the first peer node via the GTP link, the probing response message containing the probing interval recommendation determined.
摘要:
A method and system for measuring the performance of the end-to-end mobile subscriber connection is disclosed. Test traffic originating from the network is sent to the mobile device and the mobile device acting as a test traffic reflector includes current radio bearer conditions that may be impacting the end-to-end performance of the subscriber connection within the test traffic that is returned back to the source. The radio access node acting as a test traffic interceptor includes current radio cell conditions that may be impacting the end-to-end performance of all subscriber connections in the cell within the test traffic that is returned back to the source. The test equipment or controller collects, calculates and reports the IP test performance towards the mobile device and radio node with correlation to the radio bearer and radio cell performance.
摘要:
Systems and methods are provided for managing faults at the tail end of the user plane associated with an MBMS bearer. A fault detection time interval associated with the MBMS bearer can be defined and monitored. A fault can be detected in response to determining that the defined time interval has elapsed without receipt of a synchronization packet. Mechanisms for detecting, indicating, localizing and repairing MBMS bearer faults are described.
摘要:
Presented are methods and apparatus for processing test traffic encapsulated within bidirectional subscriber connections on intermediate nodes. Test packet requests are generated by a test traffic controller and received at a node by an enhanced decapsulator, a decapsulator or at an ingress port. A tunnel header is extracted from the test packet requests and a determination is made as to whether the test packet request destination is for the receiving node or for another node. If the test packet request is for another node the test packet request is forwarded toward the destination node. If the test packet request is for the receiving node then a test packet reply is generated and the test packet reply is sent toward the test traffic controller.