Patent application number | Description | Published |
20120155324 | Topology Detection of LTE Nodes - A network monitoring system probe is coupled to network interfaces and captures data packets. A monitoring system processor identifies messages specific to S1-MME interfaces and identifies GUMMEI parameters in the S1-MME interface messages. The monitoring system creates MME node entries in a network topology list, each of the MME nodes corresponding to a unique GUMMEI value. The monitoring system links individual S1-MME interfaces, SCTP associations, and MME IP addresses to a particular MME in the network topology list. Using authentication messages carried on the S6a and S1-MME interfaces, the monitoring system links individual S6a interfaces and S6a interface IP address to a particular MME in the network topology list and creates one or more HSS node entries in the network topology list. The monitoring system also creates eNodeB, S-GW, and PDN-GW nodes in the network topology list and links them to IP addresses and X2, S11, and S5/S8 interfaces. | 06-21-2012 |
20120163203 | Adaptive Control of Video Transcoding in Mobile Networks - The data rate for video data being transmitted through a wireless network is adjusted based upon cell congestion levels. A network monitoring system identifies the congestion levels in network cells based upon data traffic captured from network interfaces. When a cell congestion level reaches a first level, an alert is sent to a video transcoding device. The video transcoding device adjusts the data rate for video data being sent to one or more subscribers in the congested cell. The data rate adjustments may be based upon a subscriber profile or a user equipment type. When cell congestion levels drop below a second threshold, the monitoring system sends a second alert indicating that the data rate can be increased. | 06-28-2012 |
20120188882 | Determining Mobile Video Quality of Experience and Impact of Video Transcoding - Video data packets transmitted through a wireless network are captured by a network monitoring system. Video data sessions are detected from the video data packets. Key parameters are identified within the video data packets, such as video bit rate, resent or failed video packets, and video session duration. A Quality of Experience (QoE) is determined for some or all users associated with the video sessions based upon the key parameters. A header extension is added to the video data packets by a transcoding system. The header extension includes data associated with original and transcoded video data packets. The network monitoring system monitors the header extension and evaluates the effect of video transcoding upon the overall QoE for users. The monitoring system provides feedback to a transcoding policy engine based upon the effect of transcoding upon QoE. | 07-26-2012 |
20120275311 | Automatic Network Topology Detection and Modeling - A method and system for identifying the topology of a network is disclosed. One or more monitoring probes capture data packets from network interfaces. Network elements, such as physical ports, physical links, network nodes, logical links, and SCTP associations, are identified from the captured data packets. A data model is created for storing the network elements, including the physical ports, physical links, network nodes, logical links, and SCTP associations. The data model also stores associations between the network elements. The monitoring probes pass network element data to a monitoring server. A topology agent in each monitoring probe identifies duplicates of previously detected network elements within the probe. A topology agent in the monitoring system server identifies duplicates of previously detected network elements within the monitoring system server. | 11-01-2012 |
20130166738 | Web Page Download Time Analysis - Systems and methods for determining web page download times are described. HTTP transactions data is collected from flow records or PDUs. A subscriber IP address, HTTP URI, and referrer are extracted from the flow records. A subscriber record is identified using the subscriber IP address, and a configured web page is identified using the HTTP URI. A processing path is then determined for the HTTP transaction The processing path is selected from one of: a new page download path for a configured page, a collision path for HTTP transactions that collide with an existing page download, and a page object path for artifacts pages that are already being tracked. | 06-27-2013 |
20130215748 | Intelligent and Scalable Network Monitoring Utilizing a Hierarchy of Devices - Systems and methods for intelligent and scalable network monitoring using a hierarchy of devices are described. In some embodiments, a method may include monitoring network traffic having a first data rate and identifying a portion of that traffic. For example, the network traffic may include packet-based traffic in a mobile telecommunications network (e.g., 3G, 4G, LTE, etc.), and identifying the portion of the traffic may include identifying high-value and/or low-value portions as determined by one or more traffic identification rules (e.g., by user, session, transport protocol, type of content, etc.). The method may also include selecting a network analyzer to receive the high (or low) value traffic, and which may not be capable of and/or configured to analyze packets at the first data rate. Accordingly, the method may further include transmitting the identified traffic portion to the selected analyzer with a second data rate smaller than the first data rate. | 08-22-2013 |
20130272127 | Session-Aware GTPv2 Load Balancing - Systems and methods for session-aware GTPv2 load balancing are described. In some embodiments, a method may include receiving a first and a second transaction between an MME and an S-GW over an Sll interface of an LTE/SAE network using a control portion of a second version of a GTPv2-C protocol and storing an uplink UP TEId and IP address, a downlink CP TEId and IP address, and an uplink CP TEId and IP address obtained from the first transaction, and a downlink UP TEId and IP address obtained from the second transaction. The method may further include identifying messages between an eNodeB and the S-GW over a direct tunnel using a user portion of a GTPv1-U protocol as belonging to a session in response to the messages including at least one of: the first uplink UP TEId and IP address, or the first downlink UP TEId and IP address. | 10-17-2013 |
20130272136 | Session-Aware GTPv1 Load Balancing - Systems and methods for session-aware GTPv1 load balancing are described. In some embodiments, a method may include receiving a first message transmitted from an SGSN to a GGSN using a GTP-C protocol and storing a downlink UP TEId and IP address and a downlink CP TEId and IP address. The method may also include receiving a second message transmitted from the GGSN to the SGSN using the GTP-C in response to the first message and storing an uplink UP TEId and IP address and an uplink CP TEId and IP address. The method may further include identifying one or more messages exchanged between the SGSN and the GGSN using a GTP-U protocol as belonging to a given session in response to the one or more messages including at least one of: (i) the downlink UP TEId and IP address, or (ii) the uplink UP TEId and IP address. | 10-17-2013 |
20140003333 | S1-MME and LTE-Uu Interface Correlation in Long Term Evolution Networks | 01-02-2014 |
20140344441 | SYSTEM AND METHOD FOR GTP SESSION PERSISTENCE AND RECOVERY - A method for monitoring GPRS Tunneling Protocol (GTP) sessions in a mobile communication network having a monitoring module. The method includes the steps of monitoring, by the monitoring module, a plurality of subscriber GTP sessions, and storing recovery parameters related to the subscriber GTP sessions and subscribers associated therewith in records in a database in the monitoring module, wherein the recovery parameters are associated with initial session data for each subscriber GTP session. Upon an outage in monitoring, the method restarts the monitoring module to determine restart parameters associated with existing subscriber GTP sessions and subscribers associated therewith in the records in the database wherein the restart parameters are associated with subsequent session data for each subscriber GTP session. Before attempting to process any packets, the method associates the subsequent session data with the initial session data based upon comparing the recovery parameters with the restart parameters. | 11-20-2014 |