Four major technology trends drive the development of 3G smartphones

As 3G services are rolled out in China, 3G connectivity and powerful baseband processing capabilities bring new features to mobile phones, including GPS navigation and location services, e-mail, digital photo transmission, VoIP, digital music playback, Multi-user games, etc. Recently, Mr. Liang Yi, General Manager of Broadcom's Greater China Region, shared the four key technology trends for promoting the development of 3G smartphones and introduced the overall solution for Broadcom's low-cost, low-power 3G smartphones. Program.

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"The four technologies of wireless connectivity technology (including Wi-Fi, Bluetooth, FM and GPS), multimedia processing technology, location-based services and open operating systems will promote the development of 3G smartphones." Liang Yi said.

Bluetooth technology is not only used to transmit voice signals on headphones, but also used to transfer files. Low-power Bluetooth can transmit low-speed data and will be used in, for example, treadmills and portable medical devices. Multimedia features set great applications for 3G smartphones, such as photography, HD video, and high-quality 3D games. For location-based services, Liang Yi said: "Now general GPS and AGPS can receive signals well in open space. But in buildings with weak satellite signals, you can use cellular, Wi-Fi cross-location to Realization can be reliably located anywhere through these three technologies."

In the annual report of the 2009 smartphone function tracking survey by market watcher Ovum, GPS has become the standard for smartphones. In fact, in the second quarter of 2009, every new smartphone was launched with GPS. Wi-Fi also shows a similar trend, and all new models support Wi-Fi.

Figure: Four key technology trends driving the development of 3G smartphones

Among the four key technologies driving the development of smart phones, Liang Yi particularly emphasized the importance of open operating systems: "Open operating systems are very important for driving the development of smart phones. Development operating systems that allow others to develop more applications on them. Can bring more growth to smartphones."

According to ABI, last year's smartphones used a large portion of the Symbian operating system, followed by Window Mobile, Palm, Lunix and others. In-Stat expects smartphone shipments to increase from 161 million units in 2009 to 412 million units in 2014, when the top three smartphone operating systems are Symbian (26%), Android (17.9%) and Apple OSX ( 17.4%). More specifically, In-Stat expects a significant market share to shift from Symbian to Android, while the iPhone's market share will remain stable, although the number of smartphone users will increase significantly.

Figure: Operating system adoption in major smartphone vendors

Broadcom's low-cost 3G smartphone solution caters to the market demand, not only with complete chips, including 3G baseband (BCM2153), multimedia processor (BCM2727), PMU (BCM59035), WiFi/Bluetooth/FM combo chip (BCM4329) The GPS chip (BCM4750) also works with operating system vendors to support a variety of operating systems, including Window Mobile, Symbian, and Audroid, providing a complete system-level solution.

"The core of the smartphone - baseband IC, is now more than just baseband processing, but also integrates many other features. For example, the BCM2153 dual-core HSDPA baseband processor chip for smartphones integrates enhanced equalizer technology and complex audio. Processing, multimedia processing, interoperability with the network, integrated application processor. Another important point is that the chip achieves low power consumption at the same time, making standby time and working time very large." Liang Yi said.

The BCM2153 dual-core HSDPA processor is an economical 3G smartphone solution that does not require an external application processor like the traditional solution, while making the next-generation smartphone product comparable in price to a typical lower-priced regular cell phone. The BCM2153 processor is highly capable and flexible, enabling Symbian, Windows Mobile and Linux to run on the same platform. These powerful and flexible operating systems can support advanced applications brought by faster network connections.

The mobile multimedia processor BCM2727 supports the high-definition camera function of the mobile phone, and realizes 720p high-definition video encoding and decoding under H.264 compression with low power, mainly for medium and high-end applications. In addition to high-definition camera functions, the BCM2727 has built-in high-quality camera processing with up to 12 megapixels. The highly advanced on-chip image signal processor enables professional quality photo and video recording. This multimedia processor with Broadcom VideoCore III technology delivers a world-class gaming experience with high performance and ultra-low power 3D graphics capabilities. With the industry-standard HDMI interface on the chip, HD video, 3D gaming and 12 megapixel high-resolution photos can be displayed on full-size HDTVs and displays with the highest quality.

Figure: Broadcom offers a full range of 3G smartphone solutions

As more and more manufacturers add multiple wireless functions to mobile phones and other handheld devices, the market has greatly promoted the development of combo chips. By 2012, all wireless connectivity solutions will have shipments. Nearly 1/3 is a combined chip. To meet this growing market demand, Broadcom's BCM4329 integrates Wi-Fi (802.11n), Bluetooth 2.1 EDR, FM transceivers to enable even more powerful features in smaller devices.

The BCM4329 uses 802.11n-defined Space Time Block Coding (STBC), which allows mobile devices to stay connected to the access point anywhere in the extended coverage area. It delivers up to 50Mbps of actual wireless throughput, making large file transfers faster and consumes less total power. The BCM4329 covers both FM transmit and receive capabilities. FM transmission allows users to stream music directly from a personal media player (PMP) or mobile phone to a car stereo or home theater system without having to purchase a dedicated adapter or use a cumbersome connection cable. FM reception has become a common feature that allows users to listen to music, news and sports broadcasts on their mobile phones, as well as get real-time traffic information. The BCM4329 also integrates Bluetooth functionality for hands-free wireless headset communication, cordless data synchronization, and streaming stereo music to the handset and speakers.

“Because Bluetooth and Wi-Fi work in the same frequency band, it is important to minimize the interference when they are working at the same time. The BCM4329 combo chip uses innovative coexistence algorithms and shared antenna systems to minimize interference.” It should be said that "this combined chip can reduce power consumption by 40%, reduce design area by 15%, and increase coverage by 50% compared with discrete solutions."

At present, Broadcom has not launched a four-in-one combination chip integrated with GPS function. Liang Yi believes that the combination of GPS, Bluetooth, Wi-Fi and FM four-in-one technology is not a problem in technology. The key depends on whether there is a market. demand.

The company currently offers the single-chip GPS solution BCM4750. With a high tracking sensitivity, this GPS receiver takes full advantage of Global Locate's architecture to measure the weakest GPS signals in indoor deep and "urban canyon" environments with measurable signal levels as low as -162dBm. The BCM4750 can complete map updates in just one second, consuming less than 15mW of power during navigation. In addition, products with network connectivity, such as wireless personal navigation devices and cellular phones, can take advantage of the full capabilities of the BCM4750 software solution. These features include Assisted GPS (AGPS) and Long Term Orbit (LTO), the extended ephemeris assist feature, which in many cases reduces TTFF to less than 1 second.

Figure: Some smartphones with Broadcom solutions

In the face of the demand and fierce competition in the Chinese smartphone market for turn-key solutions, Liang Yi said that Broadcom's competitive advantage is in years of development in core cellular technology, wireless connectivity, power management and multimedia. Experience and extensive experience in hardware and software integration. He does not deny that Broadcom will provide a turn-key solution in the future, but will do it according to Broadcom's own methods.

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