Transmission and Multiplexing (TM); Digital Radio Relay Systems (DRRS); Point-to-Multipoint DRRS in Frequency Bands in the Range 24@25 GHz to 29@5 GHz Using Different Access Methods; Part 3: Time Division Multiple Access (TDMA) Methods (V1.1.1)
Point-to-Multipoint Radio Relay Systems (P-MP) may use different access methods. As some technical parameters are different for the various access methods@ the standard is divided in five parts. A basic description of the different access methods and a comparison among them is provided in TR 101 274 [3]. The present document (Time Division Multiple Access Methods@ TDMA) is to be used in conjunction with Part 1@ describing the basic parameters common to all access methods. The present document specifies the minimum requirements for system parameters of Time Division Multiple Access (TDMA) Point-to-Multipoint (P-MP) Radio Systems in the terrestrial fixed services operating in the band 24@5 GHz to 29@5 GHz (see CEPT Recommendation T/R 13-02 [4]). Only sections specific to TDMA are described in respect to the paragraphs stated in EN 301 213-1 [1]. Time Division Multiple Access (TDMA) is an alternative to FDMA and CDMA covered in other parts of the present document. In TDMA point to Multipoint (P-MP) systems@ a central station broadcasts information to terminal stations in a continuous Time Division Multiplex (TDM) or in a burst TDMA mode. The Terminal stations transmit in TDMA mode. The users may have access to the spectrum by sharing it through time multiplexing.