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Communications method involving a one to many connection
radio systems for point to multipoint communication

In telecommunications, point to multipoint communication (P2MP, PTMP or PMP) is communication which is accomplished via a distinct type of one to many connection, providing multiple paths from a single location to multiple locations. Point to multipoint telecommunications is typically used in wireless Internet and IP telephony via gigahertz radio frequencies. P2MP systems have been designed with and without a return channel from the multiple receivers. A central antenna or antenna array broadcasts to several receiving antennas and the system uses a form of time division multiplexing to allow for the return channel traffic.

In contemporary usage, the term point to multipoint wireless communications relates to fixed wireless data communications for Internet or voice over IP via radio or microwave frequencies in the gigahertz range. Point to multipoint is the most popular approach for wireless communications that have a large number of nodes, end destinations or end users. Point to Multipoint generally assumes there is a central base station to which remote subscriber units or customer premises equipment (CPE) (a term that was originally used in the wired telephone industry) are connected over the wireless medium. Connections between the base station and subscriber units can be either line of sight or, for lower frequency radio systems, non line of sight where link budgets permit. Generally, lower frequencies can offer non line of sight connections. Various software planning tools can be used to determine feasibility of potential connections using topographic data as well as link budget simulation. Often the point to multipoint links are installed to reduce the cost of infrastructure and increase the number of CPE's and connectivity. The telecommunications signal in a point to multipoint system is typically bi directional, TDMA or channelized. Systems using frequency division duplexing (FDD) offer full duplex connections between base station and remote sites, and time division duplex (TDD) systems offer half duplex connections. Point to multipoint systems can be implemented in licensed, semi licensed or unlicensed frequency bands depending on the specific application. point to point and point to multipoint links are very popular in the wireless industry and when paired with other high capacity wireless links or technologies such as free space optics (FSO) can be referred to as backhaul. The base station may have a single omnidirectional antenna or multiple sector antennas, the latter of which allowing greater range and capacity.