A method of operating a communication device (104, 200) that includes at least i) a first network interface (106, 202) configured to communicate in a first network according to a first communication protocol with a serving base station, and ii) a second network interface (108,208) configured to communicate in a second network according to a second communication protocol, the method comprising: operating the first network interface (106, 202) according to the first communication protocol, wherein the first communication protocol defines a periodically repeating frame including a set of subframes; determining, at the communication device, one or more subframes, among the set of subframes, during which the serving base station is unlikely to schedule communication with the communication device because of relatively poor channel quality, when the communication device does not yet know whether the serving base station has scheduled communications with the communication device during any of the one or more subframes, including using at least one of i) measured channel quality in the one or more subframes, and ii) one or more messages from the serving base station regarding channel quality measurements in particular subframes that are to be reported by the communication device; and in response to determining, at the communication device, the one or more subframes when the communication device does not yet know whether the serving base station has scheduled communications with the communication device, suspending operation of the first network interface (106, 202) according to the first communication protocol during the one or more subframes, and enabling operation of the second network interface (108, 208) according to the second communication protocol during at least one of the one or more subframes. operating the first network interface (106, 202) according to the first communication protocol, wherein the first communication protocol defines a periodically repeating frame including a set of subframes; determining, at the communication device, one or more subframes, among the set of subframes, during which the serving base station is unlikely to schedule communication with the communication device because of relatively poor channel quality, when the communication device does not yet know whether the serving base station has scheduled communications with the communication device during any of the one or more subframes, including using at least one of i) measured channel quality in the one or more subframes, and ii) one or more messages from the serving base station regarding channel quality measurements in particular subframes that are to be reported by the communication device; and in response to determining, at the communication device, the one or more subframes when the communication device does not yet know whether the serving base station has scheduled communications with the communication device, suspending operation of the first network interface (106, 202) according to the first communication protocol during the one or more subframes, and enabling operation of the second network interface (108, 208) according to the second communication protocol during at least one of the one or more subframes. suspending operation of the first network interface (106, 202) according to the first communication protocol during the one or more subframes, and enabling operation of the second network interface (108, 208) according to the second communication protocol during at least one of the one or more subframes.