A method for wireless communications performed by a base station, BS, comprising: determining, based on one or more conditions, an exact frequency location of one channel of one or more channels to perform narrowband communications with a user equipment, UE, wherein the one or more conditions comprise whether the exact frequency location coincides with a narrowband available for transmitting a system information block, SIB, for enhanced machine type communication, eMTC, and wherein a set of narrowbands available for transmitting the SIB for eMTC is reduced by one or more narrowbands available as an anchor channel location, in which narrowband communications may be deployed, corresponding to a given operating bandwidth; transmitting an indication of the one or more conditions to the UE in a master information block, MIB, wherein: the one or more conditions comprise a type of deployment for the narrowband communications and an indication of whether a cell identifier, ID, of a first cell associated with the BS is the same as a cell ID of a second cell for a wideband cell that uses a wider system bandwidth, and the MIB comprises a field that jointly indicates the type of deployment and whether the cell ID of the first cell is the same as the cell ID of the second cell; and communicating with the UE, based at least in part on the exact frequency location of the one channel. determining, based on one or more conditions, an exact frequency location of one channel of one or more channels to perform narrowband communications with a user equipment, UE, wherein the one or more conditions comprise whether the exact frequency location coincides with a narrowband available for transmitting a system information block, SIB, for enhanced machine type communication, eMTC, and wherein a set of narrowbands available for transmitting the SIB for eMTC is reduced by one or more narrowbands available as an anchor channel location, in which narrowband communications may be deployed, corresponding to a given operating bandwidth; wherein the one or more conditions comprise whether the exact frequency location coincides with a narrowband available for transmitting a system information block, SIB, for enhanced machine type communication, eMTC, and wherein a set of narrowbands available for transmitting the SIB for eMTC is reduced by one or more narrowbands available as an anchor channel location, in which narrowband communications may be deployed, corresponding to a given operating bandwidth; transmitting an indication of the one or more conditions to the UE in a master information block, MIB, wherein: the one or more conditions comprise a type of deployment for the narrowband communications and an indication of whether a cell identifier, ID, of a first cell associated with the BS is the same as a cell ID of a second cell for a wideband cell that uses a wider system bandwidth, and the MIB comprises a field that jointly indicates the type of deployment and whether the cell ID of the first cell is the same as the cell ID of the second cell; and the one or more conditions comprise a type of deployment for the narrowband communications and an indication of whether a cell identifier, ID, of a first cell associated with the BS is the same as a cell ID of a second cell for a wideband cell that uses a wider system bandwidth, and the MIB comprises a field that jointly indicates the type of deployment and whether the cell ID of the first cell is the same as the cell ID of the second cell; and communicating with the UE, based at least in part on the exact frequency location of the one channel.