Patent ID: 8769367

Claim:
A wireless communications device for IP address negotiations between a terminal device and a service network, comprising: a wireless module providing wireless communications from and to the service network; a connection device, coupled to the terminal device; and a processing unit, coupled to the connection device and the wireless module, receiving an IP address request message from the terminal device via the connection device, requesting an IP address and a DNS address from the service network via the wireless module in response to the IP address request message, determining whether allocated IP address and DNS address have been received from the service network via the wireless module, and sending a rejection message to the terminal device via the connection device to trigger the terminal device to resend the IP address request message in response to determining that the allocated IP address and DNS address have not been received from the service network, wherein the rejection message is an Internet Protocol Control Protocol (IPCP) CONFIG REJ message without any content, and wherein the processing unit further delays the sending of the resection message until a predetermined count number of successive IP address request messages have been received, subsequent to the last sending of the resection message, from the terminal device via the connection device.