Patent ID: 9413514
Filing Date: 2016-08-09
CPC Classification: H04L,H04W

Claim Text:
1. A method of operating a wireless device in a multi-cell, the method comprising: receiving, from a first cell instead of a second cell configured with no transmission of a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH) and a cell-specific reference signal (CRS), control information on a transmission power of a physical downlink signal to be transmitted from the second cell, wherein the control information includes a relative offset between a transmit power of a CRS of the first cell and a transmit power of the physical downlink signal to be transmitted from the second cell, and wherein the relative offset included in the received control information is used for the wireless device, which is unable to receive the CRS from the second cell and measure a transmit power of the CRS from the second cell, to estimate a downlink path loss of the physical downlink signal to be received from the second cell; receiving, from the second cell, the physical downlink signal, based on the control information received from the first cell; estimating the downlink path loss of the physical downlink signal received from the second cell, based on the relative offset, without receiving the CRS from the second cell and measuring the transmit power of the CRS from the second cell; and piggy-backing and transmitting the estimated downlink path loss onto a physical uplink shared channel (PUSCH) of the first cell if it is not allowed to transmit the PUSCH to the second cell configured with no transmission of the PUCCH.