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manual abstract
Alcatel-Lucent9900WirelessNetworkGuardian To illustrate, Figure 1a depicts the normalized bandwidth consumed by applications running on a commercial wireless network. By comparison, Figure 1b depicts the same applications on the same day relative to the cellular airtime consumed in the network to support these loads. Today’s monitoring and packet inspection products allow wireless service providers to monitor subscriber and application usage behavior on their network (Figure 1a) Figure 1a. Application by Bandwidth 100% 80% 60% 40% 20% 0% 0 2 4 6 810 12 14 16 18 20 22 — but they don’t translate this into wireless resources (Figure 1b). The Alcatel-Lucent 9900 Wireless Network Guardian enables a paradigm shift in network operation and management for wireless operators. It allows wireless service providers to associate individual subscriber behavior to resource consumption at every layer and element in a wireless data path in real time (Figure 2). Figure 1b. Application by Airtime 100% 80% 60% 40% 20% 0% 0 2 4 6 810 12 14 16 18 20 22 Alcatel-Lucent 9900 Wireless Network Guardian Figure 2. Alcatel-Lucent 9900 WNG Tracks Behavior at the Subscriber and Network Level ALU 9900 Detector ALU 9900 Central Authentication Authorization Accounting Radius Mobile Internet Protocol Radio Network Controller Packet Data Serving Node Home Agent Internet Servers • Monitors every packet and radius exchange • State engine for every mobile device, internet source, and network element • Airtime, signaling, volume consumed by sources of data traffic • Behavioral anomaly detection and alarms for any flow that puts excessive stress on the network — in real time By connecting individual subscribers to resource consump- tion, the Alcatel-Lucent 9900 helps service providers manage the effects IP-based applications have on wireless networks. IP applications in use today were not designed with wireless data network constraints in mind, and as a result, can easily and unexpectedly burden the radio access network. In fact, subtle changes in the transmission characteristics of wireless data sessions can have a profound impact on network performance. With the Alcatel-Lucent 9900, service providers can ensure they make the best possible use of their network and the precious air spectrum between the network and the mobile endpoints. How It Works The Alcatel-Lucent 9900 is built with two components: a detector and a central. The detector monitors data and radius traffic that is mirrored from within the packet core of a 3G/4G network. It generates “events” based on observed behaviors. It also generates a new flow record, which is a wireless-specific net-flow record, which is a subscriber-specific net-flow record, appended with context specific to wireless data networks. The deployed detectors securely communicate this information to the central, which provides GUI- access to the detectors, reports, forensics, and control. Value This information is proving invaluable for wireless service providers on many levels: • Operations — It allows service providers to determine which subscribers, servers, and applications are the most significant contributors of non-value-add traffic and load on the network. • Planning — It enables service providers to establish a baseline measurement of network use at the individual subscriber level, allowing more accurate predictions of network capacity trends. • Engineering — It ensures packet transmissions from devices and networks are consistent with design, and are not being sent fraudulently. • Security — It allows service providers to detect a new class of wireless-specific denial of service attacks targeted at the signaling layer and exhausting RF chan- nels, as well as the mobile devices that are directly or surreptitiously participating in the attacks. • Marketing — It helps service providers determine the network cost associated with supporting any given application, thereby enabling application-level ROI CONTACT Mike Schabel schabel@alcatel-lucent.com +1 908 582 4354 Alcatel, Lucent, Alcatel-Lucent and the Alcatel-Lucent logo are trademarks of Alcatel-Lucent. All other trademarks are the property of their respective owners. The information presented is subject to change without notice. Alcatel-Lucent assumes no responsibility for inaccuracies contained herein. © 2007 Alcatel-Lucent. All rights reserved. CDC288807100 (12) ...