  Radar and wireless communication are widely acknowledged as the two most
successful applications of the radio technology over the past decades.
Recently, there is a trend in both academia and industry to achieve integrated
sensing and communication (ISAC) in one system via utilizing a common radio
spectrum and the same hardware platform. This article will discuss about the
possibility of exploiting the future sixth-generation (6G) cellular network to
realize ISAC. Our vision is that the cellular base stations (BSs) deployed all
over the world can be transformed into a powerful sensor to provide
highresolution localization services. Specifically, motivated by the joint
encoding/decoding gain in multi-cell coordinated communication, we advocate the
adoption of the networked sensing technique in 6G network to achieve the above
goal, where the BSs can share the sensing information with each other for
jointly estimating the locations and velocities of the targets. Several
opportunities and challenges to realize networked sensing in the 6G era will be
revealed in this article. Moreover, the future research directions for this
promising trend will be outlined as well.
