Connection control apparatus and method

An apparatus, comprising:

• a receiving unit configured to receive a link configuration request message sent by a second terminal, wherein the link configuration request message carries context information of the second terminal, and the context information comprises at least an identifier (ID) of the second terminal;
• a sending unit configured to send a bearer configuration request message to a network-side device covering a coverage area according to the link configuration request message, wherein the bearer configuration request message comprises a radio bearer modification request message or a bearer resource modification request message, the bearer configuration request message carries the context information of the second terminal, the bearer configuration request message is used to request the network-side device to configure a service bearer, and the service bearer is used to transmit service data of the second terminal between a first terminal within the coverage area and the network-side device;
• the receiving unit is further configured to receive a bearer configuration complete message that is sent by the network-side device according to the bearer configuration request message, wherein the bearer configuration complete message carries an ID of the service bearer;
• a processor configured to allocate a second IP address to the second terminal, establish a mapping relationship between a first IP address allocated by a data gateway P-GW to the second terminal and the second IP address, and establish a mapping relationship between an ID of a first radio bearer and the second IP address;
• the sending unit is further configured to send a link configuration complete message to the second terminal after the mapping relationship between the first IP address and the second IP address and the mapping relationship between the ID of the first radio bearer and second IP address are established, so that the second terminal performs data transmission with the network-side device over the service bearer through the first terminal;
• in an uplink direction, the receiving unit is further configured to receive uplink data sent by the second terminal, wherein a source IP address of the uplink data is the second IP address;
• and
• the processor is further configured to replace the source IP address of the uplink data with the first IP address.