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Same as NeutralState but with more restrictions DLBiased ULBiased DynTTIMode Same as NeutralState but with more restrictions NeutralState Yes RTTI successful? Return reservation No Yes BTTI+FANR successful? Return reservation No Yes BTTI successful? Return reservation No Unable to do any reservation Figure 9.3.2 TBF reservation algorithm in CU The reservation algorithm first checks which dynamic TTI mode the channel is in. If the mobile station has RTTI capability it first tries to do a RTTI reservation. To be able to do a RTTI reservation it needs at least two free R-PDCH timeslots that are located together in the frame. RTTI examples: R R B B Success B R R R R B R Success B Unsuccess B R B R R R Success R Unsuccess B R Taken R B B Unsuccess Figure 9.3.3 RTTI allocation examples 59
