BURSTS

BURST TYPES


There are five burst types.

Burst types

THE RELATIONSHIP BETWEEN BURSTS AND FRAMES


The relationship between bursts and frames is shown in the figure below. There are two types of multiframe:
• 26 TDMA frame multiframe: used to carry TCH, SACCH and FACCH
• 51 TDMA frame multiframe: used to carry BCCH, CCCH, SDCCH and SACCH.

Bursts and frames

Multiplexing of BCH’s and CCCHs on TS0

Multiplexing of SDCCH’s and SACCH’s on TS1

SDCCH is divided into 8 groups D0-D7 so that it can serve 8 MS’s concurrently. A0-A7 are the corresponding SAACH channel groups which are used for Tx. Power control, TA correction if necessary while the MS is located in SDCCH.