From: Open sub-granting radio resources in overlay D2D-based V2V communications
Notation | Interpretation |
---|---|
\(D\) | Set of D2D users where \(d_{k}\in D\) for \(k=1,...,N\) |
\(C\) | Set of D2I users where \(c_{m}\in C\) for \(m=1,...,M\) |
L | Set of allocated RBs to D2D communication |
F | Set of available RBs on eNB |
\(B_w\) | Allocated bandwidth |
b | Number of allocated RBs to every entities where \(b=1,...,F\) |
\({\mathbb {X}}\) | Sub-granting allocation indicator |
\(\alpha _c\) | Path-loss component for D2I user |
\(\alpha _d\) | Path-loss component for D2D user |
\(\mu _c\) | Fading component for D2I user |
\(\mu _d\) | Fading component for D2D user |
\(\sigma _0\) | White Gaussian Noise |
\(\sigma\) | Shadowing term |
\({P}_{m}\) | Transmission power of D2I transmitter, \(m=1,...,M\) |
\({P}^C_{MAX}\) | Power threshold limit for D2I transmitter |
\({P}_{k}\) | Transmission power of D2D transmitter, \(k=1,...,N\) |
q | Modulation and coding scheme of every entities |
\(\epsilon\) | General term for BLER |
\(\epsilon ^D_{th}\) | Minimum BLER threshold for D2D communication |
\(\epsilon ^{sg}_{th}\) | Minimum BLER threshold for sub-granting |
\(\epsilon _{mk}\) | Measured BLER between D2D and D2I users |
T | Subframe transmission time |
\({\tau }\) | Data transmission duration |
\(T_{me}\) | Channel state information transmission interval |
\(T_{pos}\) | Position information transmission interval |
\(T_{br}\) | Bids transmission interval |
\(S_{Min}\) | Sub-granting signaling processing time |
\({\mathscr {Z}}\) | Unique number of a cellular user in network |