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| NXP带UMA功能GSM-GPRS-EDGE VAS系统解决 | |||||
作者：NXP 文章来源：本站 点击数： 更新时间：2007-5-8  |
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This market-proven, ARM9-based design for a GSM/PGRS/EDGE VAS phone supports seamless handover to VoIP on WLAN. It is a fully validated, IOT-tested design that extends coverage into unlicensed WLAN networks for seamless roaming and in improved user experience. BGW211 Low-power WLAN SiP BGB203,BGB204 Bluetooth 1.2 SiPs Single-chip Power Management Unit for mobile phones PCF5213 Nexperia multimedia baseband Nexperia mobile image processor for MMS phones TEA5767HN/V2 UAA3587 RF SiP Complete, single-package GSM/GPRS/EDGE RF transceiver UBA2007/UBA2008 Intelligent charge switches for charging circuit applications I2C general purpose I/O SPI slave or UART to I2C master / GPIO I2C LED display control  Key features Dual-mode operation GSM/GPRS/EDGE 850/900/1800/1900 Integrated UMA GoIP (GSM over IP) client for WLAN 802.11b/g Best-in-class BGW211 802.11g SiP No-host-load architecture optimized for mobile applications Lowest standby power consumption (2 mW for total 802.11 system) Smallest size, highest level of integration (footprint: 150 mm2, height: 1.4 mm) State-of-the-art GSM/GPRS/EDGE platform Release 99 Modem compliant with latest GCF and PTCRB tests Fully validated Interoperability Testing (IOT) More than 200 million Nexperia cellular system solutions already deployed Optimized core chipset with single-core ARM9 for superior performance High-performance multimedia features Video recorder MPEG4/H263, 15 fps QCIF with high quality mode (128 kbps) Media player for video, MP3, AAC, and AAC+ Audio/video streaming and progressive download High-performance JAVA that is fully JTWI compliant Software polyphony DRM 1.0 Advanced integrated connectivity features Bluetooth 1.2 with large set of profiles Near Field Communication (NFC) USB 2.0, IrDA, MMC/SD/T-Flash card Supported by Nexperia Mobile Developers Kit Dedicated local support and customer training are available Background information Unlicensed Mobile Access (UMA) technology lets a subscriber use GSM/GPRS services via an unlicensed Wireless LAN (WLAN) access point at home or in a public hotspot. When the subscriber moves outside the range of a cellular network, UMA technology automatically accesses the nearest unlicensed WLAN network to enable seamless roaming. UMA technology also manages the hand-off between networks while the handset is in use, so traveling subscribers can conduct voice calls and data sessions without interruption. Service providers and network operators that support UMA technology can make use of the existing WLAN infrastructure to offer their subscribers greater coverage and an improved user experience. The design builds on the Nexperia cellular system solution 6100 to add several features that support UMA operation. There is a WLAN service provider for roaming, association, and scanning, plus a WLAN chipset driver. An integrated RTP offers up- and downlink functionality, there is support for QoS (WMM version 1), and WLAN security features (e.g. WPA, WPA2, and 802.1x). The design includes certification handling for IPsec and integrates several codecs, including G.711, EFT, FR, and AMR. The system is designed for optimum standby time and power consumption. The battery can function for an estimated 48 hours between charging and offers an estimated two hours of talk time (circuit switch) plus two hours of WLAN use (voice and data mix). The design comes fully GCF/PTCRB tested, so OEMs and ODMs can save time while delivering mature, reliable technology. The NXP core chipset includes a Nexperia multimedia baseband, an RF transceiver, a power management unit, and a battery charger. The protocol stack includes an extendable man-machine interface (MMI) and is fully tested for interoperability with the application hardware. The result is an optimized design that provides outstanding standby and connection time. The design includes several ICs that raise the core chipset to a higher level of multimedia performance. There is an image processor, with dedicated power-management circuitry, that previews, captures, stores, and manipulates still images and video clips. There is also a built-in low-power FM radio IC that can be used with US, European, and Japanese bands. For wireless connectivity, the Nexperia cellular system solution 6120 has built-in options for Bluetooth, WLAN, and even Near Field Communication (NFC). For WLAN functions, the design uses the BGW211, a low-power 802.11g WLAN System-in-Package (SiP). The BGW211 integrates the baseband/MAC, radio, power amplifiers, and antenna switch in a compact package that has a footprint of only 150 mm2 and is only 1.4 mm high. It offers industry-leading standby and operating power consumption, requiring only 2 mW in standby mode for the entire 802.11 system. To support the design, NXP offers the Nexperia Mobile Developers Kit, a simple-to-run PC-based kit developed in collaboration with ARM. It includes industry-leading ARM tools and uses the popular Metrowerks Codewarrior for its development environment. It also comes with a self-guided training pack plus a complete set of documentation (with HTML index). |
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