"WINNER II Channel Models", ver 1.1, Sept

WINNER II D1.1.2 V1.1
Figure 5-4: Drive-by scenario (with multiple mobile stations).
Here, M locations of mobile station 1, and N locations of mobile station 2 are defined yielding a total
of M+N points or labels. The resulting procedure is as follows.
1. Set BS c1 and c2 locations and array orientations according to layout.
2. Set MS locations ms11 to ms2N and array orientations according to layout.
3. Set the links to be modelled to 1 in the pairing matrix.
4. Generate all the radio links at once to obtain correct correlation properties. It is possible to
generate more channel realizations, i.e. time samples, for each channel segment afterwards.
This can be done by applying the same values of small scale parameters and restoring final
phases of the rays.
5. Simulate channel segments in parallel or consecutively according to the desired motion of the
mobiles.
5.1.3 Multihop and relaying
Typically, the links between the MSs and the links between the BSs are not of interest. Cellular
systems are traditionally networks where all traffic goes through one or more BS. The BS themselves
again only talk to a BS hub and not between them.
Multihop and relaying networks break with this limitation. In multihop networks, the data can take a
route over one or more successive MS. Relaying networks, on the other hand, employ another level of
network stations, the relays, which depending on the specific network, might offer more or less
functionality to distribute traffic intelligently. The WINNER channel model can be used to obtain the
channels for multihop or relaying scenarios, as described below.
Figure 5-5: Multihop and relaying scenarios.
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