Abstract: To support information sharing between terminals existing within a short distance from each other while a burden on a server administrator is prevented from increasing or decreased. An information sharing support server includes a server data transmission and reception control unit which recognizes identifiers of sending terminals associated with identifiers of originating terminals (STEP 446, STEP 466), recognizes identifiers of terminals associated with the relevant identifiers of the sending terminals (STEP 448, STEP 450, STEP 468), and transmits data to the relevant terminals (STEP 452, STEP 470).

Abstract: Provided is a method for a portable terminal to acquire Web site pages related to the current position, without a user selecting a site page. A proxy server includes an address correspondence table in which the addresses of the site pages and access points are associated. The portable terminal searches for the access points in the vicinity, receives annunciation signals including access points' addresses, and measures the reception levels. The portable terminal transmits a page acquisition request to the proxy server. The proxy server searches for the address of the site page corresponding to the address of each access point, using address correspondence table, and transmits list information, where the addresses are arranged in descending order of reception levels, to the portable terminal. The portable terminal presents the list information to the user and transmits page acquisition requests having one or more addresses as destinations to the corresponding site servers.

Abstract: Provided is a method for exchanging messages only between the users in a predetermined range around the current position, without intentionally grouping the users. A message server stores a message table where a message is associated with each set of addresses of a plurality of access points. A portable terminal searches for access points near the portable terminal and receives annunciation signal including the address of the access point from each access point. The portable terminal transmits, to a message server, a message acquisition request including, as a query, the set of the addresses included in the annunciation signals. The message server compares the set of the addresses as the query with a plurality of sets of addresses recorded in the message table, extracts messages corresponding to the sets of the addresses ranking high arranged in descending order of similarity, and transmits the messages to the portable terminal.

Abstract: Provided is a method for a portable terminal to acquire Web site pages related to the current position, without a user selecting a site page. A proxy server includes an address correspondence table in which the addresses of the site pages and access points are associated. The portable terminal searches for the access points in the vicinity, receives annunciation signals including access points' addresses, and measures the reception levels. The portable terminal transmits a page acquisition request to the proxy server. The proxy server searches for the address of the site page corresponding to the address of each access point, using address correspondence table, and transmits list information, where the addresses are arranged in descending order of reception levels, to the portable terminal. The portable terminal presents the list information to the user and transmits page acquisition requests having one or more addresses as destinations to the corresponding site servers.