U.S. mobile operator Sprint has announced improved 3G and all-new 4G LTE network, which now includes Sprint Spark, in Chicago. According to sprint, the company undertook a massive initiative to “rip and replace” equipment from its 38,000 cell sites across the country.

Clearwire plans to roll-out LTE next year. Operator intends to have its first wave of TD-LTE 5,000 cell sites up and running by June 2013, FierceWireless reported earlier. With TDD-LTE rollout, Clearwire expects to capitalize on its deep spectrum resources to deliver on 4G capacity needs over the long-term.

Nokia Siemens Networks has announced that company launched a LTE network for U.S. Cellular and its partner, King Street Wireless, in 11 markets covering select cities in Illinois, Missouri, North Carolina, Oklahoma, Oregon, Tennessee, Virginia, Washington and West Virginia. Nokia Siemens Networks was selected by U.S.

A Smart Mobility Consortium on Cellular-Vehicle-to-Everything (C-V2X) technologies has been formed by the Hong Kong Applied Science and Technology Research Institute (ASTRI), HKT Limited, Huawei and Qualcomm Technologies.

Nokia Networks launches its third consecutive Open Innovation Challenge in Espoo, Finland and the focus of this year’s challenge is on the Internet of Things (IoT) domain. Nokia invites innovative ideas, technologies, or business models addressing opportunities in the IoT domain.

Nokia Solutions and Networks has launched voice call continuity (VCC) to complement Voice over LTE (VoLTE) by enabling seamless handovers to 2G or 3G networks. According to company, the enhanced solution optimizes VoLTE network connection quality and control with better bearer switching and shorter delay.

ZTE has signed a contract with the MTN Nigeria to build GSM/UMTS networks in Nigeria and has been selected by Telenor Pakistan (TP) to provide an array of equipment to assist in the construction of Pakistan’s ‘Turnkey’ 2/3/4/G national network upgrade and extension project.