[STDS-802-16] [MMR-AH-UM] Cooperative relaying addition to Section 5.3 - "Types of Routes" in C80216j%2d06_UMAHtemp_r2.doc.
Dear all,
I suggest adding cooperative relaying to the rout type discussion in the
Usage Model document. That is, when more than one RS are transmitting
the same data to a MS. The MS may be aware of this (they appear like
more than one BS antenna to the MS, much like Tx antenna diversity used
at the BS) or unaware (if the RS send the same waveforms so they appear
like one BS antenna to the MS). Cooperative relaying is different than
"redundant routes" and has the resilience built into it.
It is expected that in areas with coverage problems due to many shadows
(e.g., in and between buildings) RS deployment needs to be dense and as
a result coverage areas will greatly overlap (in the unshadowed areas).
This high percentage of fringed areas decreases the capacity and
throughput of the system. The way to overcome this is by making groups
of relays to cooperate during all or part of the downlink portion of the
frame.
Matty