5G broadcast which adopts the point-to-multipoint transmission mode,by introducing TV towers,can provide linear TV,software upgrades and other broadcasting services to unlimited users over mobile networks.As a complementary with the point-to-point transmission mode,5G broadcast is the most promising broadcasting technology in the future.This survey studies the standardization process of multicast and broadcast services since 2G era and introduces the most important experimental and commercial trials of each development stage.Based on the state-of-the-art,several research directions of key techniques are discussed.
维普
万方数据
