Page 109 - Kaleidoscope Academic Conference Proceedings 2020

Industry-driven digital transformation

which contains 4 time domain occasions. The simulation For the performance of eMBB transmission, we can see from
results are shown in Figure 10. Figure 11 and Figure 12, that with the increase of cell load,
UPT of eMBB transmission shows a downward trend. In all
As shown in Figure 10, the most suitable boosted power cell load scenarios, ROPC has the largest UPT for eMBB
value may not be always 6 dB, and we divide the power transmission, which is mainly due to the dynamic selection
increase value into four levels with dotted lines equal to 0, 3, of boosted power value. It can be observed that DPCI has a
6 and 9. In this experiment, a 6 dB power boosting cannot maximum gain of 13.78% compared with BCI, and ROPC
meet the reliability requirement for URLLC in 17 out of 100 has a maximum gain of 12.50% compared with BPC.
conflicts, while 6 dB power boosting becomes wasteful in 40
out of 100 conflicts. For ROPC, 9 dB can be boosted in 0.325 0.3049(+4.6%)
scenarios where 6 dB cannot meet URLLC transmission 0.2915 BCI
requirements, while 3 dB and 0 dB can be boosted in 0.2764(+7.26%) DPCI
UPT(Mbps)
scenarios of good channel condition quality to save power. 0.275 0.2577

10 0.225 0.2187(+13.78%)
9 0.1922
8
0.175 (5,10) (10,10) (20,10)
7
Boosted power value (dB) 5 4 3 Figure 11 – UPT of eMBB transmission for BCI and DPCI
6
Cell load setup Ω

1 2
0 0.3417(+4.69%) BPC
0.345
-1 0.3264 ROPC
10 20 30 40 50 60 70 80 90 100 0.3132(+7.48%)
Conflict number 0.295 0.2914
UPT(Mbps) 0.2547(+12.5% )
Figure 10 – Actual boosted power values
4.3 System performance comparison for different 0.245 0.2264
multiplexing methods
0.195
(5,10) (10,10) (20,10)
To compare the performance of different multiplexing Cell load setup Ω
methods as described above, the performance of the URLLC
transmissions and eMBB UE perceived throughput (UPT) Figure 12 – UPT of eMBB transmission for BPC and ROPC
are evaluated. The corresponding simulation assumptions are
shown in Table 3.
Table 4 – Percentage of UEs satisfying reliability and
latency requirements for URLLC transmission in different
The scheduling granularity is set to 14 OFDM symbols for multiplexing methods
eMBB and 3 or 4 OFDM symbols for URLLC. For BCI, 2-
D bitmap pattern is set as 4×7, which means the RUR is Multiplexing
, 5
10
divided into 4 parts in the time domain and 7 parts in the method Ω = ( ) Ω = ( ,10 10 ) Ω = ( ,20 10 )
frequency domain. For BPC, 6 dB power boosting of
URLLC transmission is assumed in case of overlapping with No scheme (%) 84.37 78.64 66.71
eMBB transmission. For DPCI, 4 bits are used for indicating BCI (%) 93.33 89.87 80.64
which time domain occasions is occupied, and 2-D bitmap
pattern is dynamically set based on the actual number of DPCI (%) 93.27 89.64 80.62
occasions occupied, such as 1×24, 2×12, 3×8, 4×6. For
ROPC, the power boosting value is set according to the BPC (%) 87.78 83.97 73.84
actual overlapping resource proportion, and it is divided into
4 levels, such as 0 dB, 3 dB, 6 dB, 9 dB. The system-level ROPC (%) 88.34 86.47 76.77
simulation results are shown in Figure 11, Figure 12 and
Table 4. As a reference, URLLC performance of UL inter- Although the cancellation method has a bigger impact on the
UE multiplexing with no scheme is also listed. eMBB transmission, it can effectively eliminate the
interference of eMBB transmission on URLLC transmission.
This is proved by the simulation results in Table 4, where

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