A method for providing, by a first Personal Network, PN, gateway, access to a content service provided by a Converged Personal Network Service, CPNS, server in an external network to a Personal Network Entity, PNE, said first PN gateway and said PNE constituting a personal network, the method comprising: performing, by the first PN gateway, a connection operation for data communication with the PNE using near-field communication; receiving, by the first PN gateway, a PN connection request message from the PNE, wherein the PN connection request message includes an address of a subscriber information storage device storing subscriber information of the PNE; if the subscriber information storage device is a second PN gateway, sending, by the first PN gateway, a request for receiving the subscriber information to the second PN gateway; if the PNE is registered in the second PN gateway, receiving, by the first PN gateway, from the second PN gateway, encrypted subscriber information, in response to the request for receiving the subscriber information; assigning, by the first PN gateway, an identifier to the PNE, wherein the identifier comprises an address that is used to identify the PNE for using the CPNS content service; sending, by the first PN gateway, to the CPNS server, a PN inventory registration message for a PN inventory including the encrypted subscriber information, wherein the encrypted subscriber information is decrypted by the CPNS server, wherein an authentication/authorization operation for the PNE is performed by the CPNS server based on the decrypted subscriber information, and wherein when the authentication/authorization operation is successfully completed, information about the PN inventory is stored in the CPNS server; if the PNE is successfully authenticated, receiving, by the first PN gateway, from the CPNS server, a first response message indicating that PNE is registered in the CPNS server; transmitting, by the first PN gateway, to the PNE, a second response message indicating that a PN connection of the PNE is completed, in response to the PN connection request message; and providing, by the first PN gateway, the CPNS content service received from the CPNS server to the PNE. performing, by the first PN gateway, a connection operation for data communication with the PNE using near-field communication; receiving, by the first PN gateway, a PN connection request message from the PNE, wherein the PN connection request message includes an address of a subscriber information storage device storing subscriber information of the PNE; if the subscriber information storage device is a second PN gateway, sending, by the first PN gateway, a request for receiving the subscriber information to the second PN gateway; if the PNE is registered in the second PN gateway, receiving, by the first PN gateway, from the second PN gateway, encrypted subscriber information, in response to the request for receiving the subscriber information; assigning, by the first PN gateway, an identifier to the PNE, wherein the identifier comprises an address that is used to identify the PNE for using the CPNS content service; sending, by the first PN gateway, to the CPNS server, a PN inventory registration message for a PN inventory including the encrypted subscriber information, wherein the encrypted subscriber information is decrypted by the CPNS server, wherein an authentication/authorization operation for the PNE is performed by the CPNS server based on the decrypted subscriber information, and wherein when the authentication/authorization operation is successfully completed, information about the PN inventory is stored in the CPNS server; if the PNE is successfully authenticated, receiving, by the first PN gateway, from the CPNS server, a first response message indicating that PNE is registered in the CPNS server; transmitting, by the first PN gateway, to the PNE, a second response message indicating that a PN connection of the PNE is completed, in response to the PN connection request message; and providing, by the first PN gateway, the CPNS content service received from the CPNS server to the PNE.