ETSI - EN 301 213-3
Fixed Radio Systems; Point-To-Multipoint Equipment; Point-To-Multipoint Digital Radio Systems 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
|Publication Date:||1 April 2000|
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 four parts.
A basic description of the different access methods and a comparison among them is provided in TR 101 274 .
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 ). Only sections specific to TDMA are described in respect to the paragraphs stated in EN 301 213-1 .
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.
The present version V.1.2.1 mod 1 contains a revision from version V 1.1.1 mod 1in the areas of:
- introduction of System types codes for regulatory unique reference to the various system types detailed in the present document, refer to new annex A (normative) and related categorization into equipment classes of spectral efficiency;
- introduction of an additional system type C;
- introduction of an additional set of spectrum masks applicable to systems radiating more than one carrier per channel;
- introduction of specifications for discrete CW components which exceed the spectrum masks.