A method of operating a network node (201, 1201) that serves a host cell in a cellular communication system, the method comprising: at one or more first time intervals, transmitting first control channel information on a control channel that extends over a first bandwidth of a radio frequency resource, wherein the first control channel communicates information that is necessary to enable a first type of communication device to establish a connection with the host cell, the first type of communication device being capable of receiving a signal having the first bandwidth of the radio frequency resource; and at one or more second time intervals, transmitting a master information block that occupies a part of the first bandwidth of the radio frequency resource, wherein the part of the first bandwidth of the radio frequency resource has a second bandwidth that is smaller than the first bandwidth and is receivable by a second type of communication device (207, 1301) having reduced receive bandwidth capabilities compared to those of the first type of communication device; wherein the master information block comprises a first part and a second part, wherein the first part comprises first part information that enables the first type of communication device to receive the first control channel and thereby establish the connection with the host cell, and wherein the second part comprises second part information identifying timing and/or frequency locations at which extended broadcast information will be transmitted, wherein the extended broadcast information directly or indirectly enables the second type of communication device (207, 1301) to establish the connection with the host cell, characterized in that: the extended broadcast information is transmitted in resource blocks (SIB; M-SIB; M-Cell), the resource blocks containing information that the second type of communication device (207, 1301) needs to receive and decode for further information to establish said connection; and the second part information includes a modulation and coding scheme of those resource blocks. at one or more first time intervals, transmitting first control channel information on a control channel that extends over a first bandwidth of a radio frequency resource, wherein the first control channel communicates information that is necessary to enable a first type of communication device to establish a connection with the host cell, the first type of communication device being capable of receiving a signal having the first bandwidth of the radio frequency resource; and at one or more second time intervals, transmitting a master information block that occupies a part of the first bandwidth of the radio frequency resource, wherein the part of the first bandwidth of the radio frequency resource has a second bandwidth that is smaller than the first bandwidth and is receivable by a second type of communication device (207, 1301) having reduced receive bandwidth capabilities compared to those of the first type of communication device; wherein the master information block comprises a first part and a second part, wherein the first part comprises first part information that enables the first type of communication device to receive the first control channel and thereby establish the connection with the host cell, and wherein the second part comprises second part information identifying timing and/or frequency locations at which extended broadcast information will be transmitted, wherein the extended broadcast information directly or indirectly enables the second type of communication device (207, 1301) to establish the connection with the host cell, characterized in that: the extended broadcast information is transmitted in resource blocks (SIB; M-SIB; M-Cell), the resource blocks containing information that the second type of communication device (207, 1301) needs to receive and decode for further information to establish said connection; and the second part information includes a modulation and coding scheme of those resource blocks.