Table 1 Notation used in this paper
k,K | Bearer index and set of all bearers in cell |
s,S | Resource block index and number of available resource blocks |
m,M | QCI index and set of all QCIs |
T | Transmission Time Interval |
P k [n,s] | Priority of bearer k on resource block s and TTI n |
R k [n,s] | Achievable transmission rate of bearer k on resource block s |
| Â | and TTI n |
R MCS | Rate of selected MCS |
\(\overline {r_{k}[n]}\) | Low pass filtered data rate that bearer k has received |
| Â | until TTI n |
α | Degree of fairness factor |
w k [n] | Head of Line delay of bearer k measured in TTI n |
q k [n] | Number of bits in queue of bearer k measured in TTI n |
f(w k ) | Delay-dependent factor in priority computation |
D | Target packet delay of delay-dependent factor |
a k | Slope adjustment factor for sigmoid function |
r lb | Lower bound for \(\overline {r_{k}[n]}\) |
\(F_{k}^{\text {QCI}_{m}}\) | QCI relative prioritization factor for bearer k mapped |
| Â | onto QCI m |
Q k | Quality performance indicator for bearer k, (see (9)) |
q k [n] | Queue length of bearer k in TTI n |
λ k | Estimator of the average arrival bit rate on bearer k |
r k [n] | Transmitted data rate in TTI n by bearer k |
| Â | Quality performance indicator of the bearer with |
\(Q^{\text {QCI}_{m}}\) | worst quality among all bearers mapped onto QCI m |
| Â | that have sufficient radio channel quality |
\(\text {TQ}^{\text {QCI}_{m}}\) | Minimum quality level for bearer k mapped on |
| Â | to QCI m |
F | Priority enhancing factor |