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World-Class WiMAX: NEC's Product Portfolio
NEC offers a comprehensive and integrated portfolio of Mobile WiMAX products and services, all fully compliant with the Wave 2 system profile:
The Mobile Station (MS) / Subscriber Station (SS) works with the Base Station to provide wireless access functions and support mobility. The MS/SS enables connection to a variety of servers through an Access Service Network. We offer three types of terminals.
Indoor CPE for Residential Users
Customer Premise Equipment (CPE) is set up in the user's home to provide WiMAX services.
Outdoor CPE for Enterprise Users
Outdoor CPEs are an excellent solution for enterprise users. They are professionally installed and connected to an external antenna to ensure a high-performance wireless environment.
PCMCIA
By inserting a PCMCIA card into a laptop, users can access WiMAX services anywhere.
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).
Base Station
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.
ASN Gateway
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
AAA offers Authentication, Authorization and Accounting services for WiMAX subscribers.
Home Agent (HA)
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
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.
