An access node (22, 28) of a radio access network that is configured to communicate over a radio interface with a wireless terminal, the access node (22, 28) comprising: a transmitter and a processor configured: to include, in a first type system information block, an information element including one or more identifiers which indicate one or more second type system information blocks which are available at the access node upon request, and one or more value tags, each of the one or more value tags being associated with one of the one or more second type system information blocks which are available at the access node upon request, wherein the first type system information block comprises information being required for the wireless terminal to perform an initial access to the radio access network, and the one or more second type system information blocks comprise other system information except the information being required for the wireless terminal to perform the initial access to the radio access network; and upon update of content of one of the one or more second type system information blocks, the access node is configured to change a value of the associated value tag of the one of the one or more second type system information blocks, and include the changed value tag and scheduling information indicating one or more broadcast schedules for the updated content of the one of the one or more second type system information blocks in the information element; and the transmitter is configured to periodically transmit, over the radio interface, the first type system information block and to broadcast the updated content of the one of the one or more second type system information blocks according to the scheduling information. a transmitter and a processor configured: to include, in a first type system information block, an information element including one or more identifiers which indicate one or more second type system information blocks which are available at the access node upon request, and one or more value tags, each of the one or more value tags being associated with one of the one or more second type system information blocks which are available at the access node upon request, wherein the first type system information block comprises information being required for the wireless terminal to perform an initial access to the radio access network, and the one or more second type system information blocks comprise other system information except the information being required for the wireless terminal to perform the initial access to the radio access network; and upon update of content of one of the one or more second type system information blocks, the access node is configured to change a value of the associated value tag of the one of the one or more second type system information blocks, and include the changed value tag and scheduling information indicating one or more broadcast schedules for the updated content of the one of the one or more second type system information blocks in the information element; and to include, in a first type system information block, an information element including one or more identifiers which indicate one or more second type system information blocks which are available at the access node upon request, and one or more value tags, each of the one or more value tags being associated with one of the one or more second type system information blocks which are available at the access node upon request, wherein the first type system information block comprises information being required for the wireless terminal to perform an initial access to the radio access network, and the one or more second type system information blocks comprise other system information except the information being required for the wireless terminal to perform the initial access to the radio access network; and upon update of content of one of the one or more second type system information blocks, the access node is configured to change a value of the associated value tag of the one of the one or more second type system information blocks, and include the changed value tag and scheduling information indicating one or more broadcast schedules for the updated content of the one of the one or more second type system information blocks in the information element; and the transmitter is configured to periodically transmit, over the radio interface, the first type system information block and to broadcast the updated content of the one of the one or more second type system information blocks according to the scheduling information.