Mobile terminal-controlled hierarchical information retrieval using the short message system

摘要

Information from a data base is retrieved via a cellular network by the following steps: (a) transmission of a SMS message from the network to the mobile station, usually a cellular telephone containing the first hierarchical level of information as well as an index to the second hierarchical level of information; (b) the transmission of a response SMS message from the cellular phone to the network containing the index to the second hierarchical level of information; (c) the transmission from the network to the cellular telephone of a SMS message containing the second hierarchical level of information as well as an index to the third hierarchical level of information. The method further includes steps to provide access to subsequent hierarchical levels of information. The method also includes steps to provide backward hierarchical information. <IMAGE>