Which technology encompasses 3rd generation cellular services integrating WCDMA, HSPA, and HSPA+?

The choice indicating 3G is the correct one because it specifically refers to the third generation of mobile telecommunications technology. This generation encompasses several advanced technologies, including WCDMA (Wideband Code Division Multiple Access), HSPA (High-Speed Packet Access), and HSPA+ (an enhanced version of HSPA), which all aim to improve data transmission rates and overall network performance compared to previous generations.

3G technologies are designed to provide higher speeds for mobile internet access, enabling functionalities such as video calls, mobile broadband, and enhanced multimedia services. WCDMA serves as the underlying air interface for 3G systems, while HSPA and HSPA+ are technologies that build on this base to further enhance speed and efficiency, allowing users to experience better connectivity and faster download/upload capabilities.

In the context of cellular technology progression, 1G represents the initial analog cellular systems, 2G introduced digital telecommunications but had limited data capabilities, and 4G significantly advances to all-IP networks that focus on delivering even higher data rates and reduced latency than 3G. Therefore, 3G clearly aligns with the integration of WCDMA, HSPA, and HSPA+, defining the advancements in mobile technology during that timeframe.