Dear All, Could you please advise me based on what logic (how) can i decompose logical channel configuration CCCH+SDCCH4 which is mapped on TS0… ? So my understanding is as follows: There are 51 TDMA frames in multiframe, therefore i am having 51 consecutive TS0 slots. So CCCH+SDCCH4 should be redistributed in these 51 slots. SDCCH4 means that there are 4 SDCCH blocks, each block is having 4 bursts or 4 timeslots in another words (as i understand to transmit SDCCH «unit data» it is needed 4 burts), so 16 slots are occupied by SDCCH. Does it mean 51-16 = 35 slots to be occupied by CCCH ? If i use following notation CCCH=C, SDCCH1=S1, SDCCH2=S2, SDCCH3=S3 and SDCCH4=S4 does the decomposition looks like: CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC S1S1S1S1 S2S2S2S2 S3S3S3S3 S4S4S4S4 If so should not there be an idle slots … ? Thank you so much. -- Mario Lucas
Hi Mario,
On Fri, Sep 10, 2021 at 11:40:43PM +0300, Mario Lucas wrote:
Could you please advise me based on what logic (how) can i decompose logical channel configuration CCCH+SDCCH4 which is mapped on TS0… ?
See the diagram e.g. at https://www.rfwireless-world.com/Terminology/GSM-combined-channel-configurat... for the 51-multiframe in a combined CCCH situation, for both downlink and uplink.
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