  A new design for two-hop opportunistic relaying in cellular networks is
proposed, with the objective of throughput improvement. We propose using idle
UEs in a cellular system with better channel to the base station to relay
traffic for active UEs. One of the key ideas proposed is the use of (only)
uplink spectrum for the Access links, and corresponding interference management
schemes for managing interference between Access and Backhaul links. The
proposed algorithms and architecture show a median throughput gain of 110% for
downlink and 40% for uplink in system simulations performed according to the
3GPP methodology.

Networking and Internet Architecture