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2G wireless network
Second-generation (2G) digital cellular networks used by mobile phones. 2G networks was developed as a replacement for first generation (1G) analog cellular networks, and the GSM standard originally described a digital, circuit-switched network optimized for full duplex voice telephony. This expanded over time to include data communications, first by circuit-switched transport, then by packet data transport via GPRS (General Packet Radio Services) and EDGE (Enhanced Data rates for GSM Evolution or EGPRS).
2G wireless network的贡献者
2G wireless network
个人通信
移动通信; 2G wireless network
使任何人在任何时间及任何地点通过个人通信号码以任何方式联结到任何个人的通信。它将目前终端至终端间的通信变成真正的个人与个人之间的通信，使个人摆脱终端的束膊，所有呼叫都直接烈被呼个人，实现完全个人移动性。 ...
跳频
移动通信; 2G wireless network
信号载波按编码序列指令在一定频段内以预定速率离散跳变的一种扩频技术。跳频技术可以抗多径衰落和近台干扰，具有电子反对抗(ECCM)能力，可提高通信的可靠性和保密性。。 ...
