An Indoor-Outdoor Multihop Scheme for Cellular Networks

A new multihop protocol is devised for cellular networks. Mobiles transmit and receive on uplink time slots assisting in-building users that are experiencing high pathloss. Wireless capacity indoors is improved by 3X to 8X compared to direct transmission. A central feature of the protocol, is that interference to existing or primary" communication may be controlled. Power control by the source mobile, using a measurement of basestation pilots, minimizes uplink interference on a shared multihop uplink slot. Likewise interference cancelation at the basestation, allows the a slot normally reserved for downlink multihop messages to be reused. This paper presents outage analysis of interference at the relay and the source mobile for the two hop link.