HDR (High Data Rate, High speed data transmission technology) is a high speed wireless access technology developed for CDMA It can meet the technology of high speed data communication in addition to the channel used to transmit telephone voice

HDR was proposed by Qualcomm HDR technology officially distributed at the end of 1999. This new communication technology is considered to be low cost and powerful, suitable for a variety of fixed and mobile communication devices (including mobile phones, handheld computers, laptop wireless models), supporting internet communication protocols The transmission rates up to 2.4 for mobile communication 2.4 Mbps