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Our mobile WiMAX solution facilitates the convergence of fixed and mobile networks, using flexible architecture and wide-area, broadband, radio-access technology.
NEC's Mobile WiMAX (Worldwide Interoperability for Microwave Access) solution stands out from the competition by decreasing deployment costs and increasing network revenue through delivery of new, value-added, broadband services. Our mobile WiMAX solution facilitates the convergence of fixed and mobile networks, using flexible architecture and wide-area, broadband, radio-access technology. NEC designed Mobile WiMAX on the firm foundation of a decade of success in wireless broadband access systems. Mobile WiMAX is on the leading edge of the worldwide trend toward fixed/mobile network convergence, and offers a flexible response to the diverse needs of network operators in different markets and locations.
For network operators such as telecom carriers and Internet service providers, NEC's Mobile WiMAX is an ideal backhaul technology. Using WiMAX infrastructure to support Wi-Fi hot spot backhaul is a cost-effective way to enhance coverage in metropolitan areas.
For Small and Medium Enterprise users, NEC's Mobile WiMAX is an excellent alternative to leased lines. Carriers generate income by providing VPN services and a global IP address for Internet access. Mobile WiMAX provides flexible network configuration and secure transport management.
For areas lacking wired broadband access such as ADSL, NEC's Mobile WiMAX provides a wireless solution that creates dual revenue streams. Hot spot providers can charge for usage, and telecom carriers gain steady income from the hot spot providers for usage of the core network or Base Stations. The benefits of NEC's WiMAX include minimum investment, VoIP capability and reuse of existing assets.
Mobile operators who are considering the expansion of 3G mobile network expansion or who wish to add value to their existing 3G networks have much to gain from Mobile WiMAX. It offers fast, seamless migration to the new, revenue-enhancing services that today's users demand. Based on IEEE 802.16e, Mobile WiMAX incorporates NEC's extensive experience and know-how in site-design optimization.
NEC offers a comprehensive and integrated portfolio of Mobile WiMAX products and services, all fully compliant with the Wave 2 system profile:
The Access Service Network (ASN) determines the network functions necessary for wireless access. The ASN consists of one or more Base Station (BS) and Access Service Network Gateway (ASN-GW).
The Base Station (BS) is a logical entity that handles the MAC and PHY interface as defined by the IEEE802.16 standard. One frequency is allocated to each sector. The BS is comprised of an IDU, ODU and antenna.
An ASN Gateway is a logical entity that performs control-plane functions.
The Connectivity Service Network (CSN) is a set of functions offering IP connectivity to WiMAX subscribers. The CSN incorporates the three network elements described below.
AAA offers Authentication, Authorization and Accounting services for WiMAX subscribers.
When the MS moves to network under a different ASN Gateway, the Home Agent transfers an IP packet to the MS and to the Foreign Agent (FA) within the destination ASN Gateway. This makes it possible to support MS mobility with the same IP address. The HA also operates as a Radius Client and notifies the AAA of accounting-related information.
IMS services are based on the Session Initiation Protocol (SIP) that has been developed within the IETF. SIP is firmly grounded in the culture of the Internet and the experiences of developing protocols such as HTTP and SMTP. SIP services are independent of the access media. Access independence means that IMS services can be accessed over existing an UTRAN, IP-RAN or W-LAN.
