Patent ID: 8098617

Claim:
A wireless communication device configured for re-synchronizing a Point-to-Point Protocol (PPP) link, comprising: a processor; and circuitry coupled to said processor configured to establish the PPP link wherein the PPP option negotiation occurs on both an R m interface and a U m interface, determine whether PPP re-synchronization is required, and re-synchronize the PPP link on the U m interface between the wireless communication device and a base station if it is determined that PPP re-synchronization is required; wherein the PPP link on the U m interface between the wireless communication device and the base station is re-synchronized without re-synchronizing the PPP link on the R m interface between the wireless communication device and a mobile terminal, wherein the re-synchronization of the PPP link on the U m interface between the wireless communication device and the base station comprises renegotiation of the LCP link and the IPCP link, wherein the renegotiation of the LCP link comprises the wireless communication device receiving an LCP configure-request packet from the base station over the U m interface, the wireless communication device sending an LCP configure-ack packet to the base station over the U m interface, the wireless communication device sending an LCP configure-request packet to the base station over the U m interface, and the wireless communication device receiving an LCP configure-ack packet from the base station over the U m interface, wherein the renegotiation of the IPCP link comprises the wireless communication device receiving an IPCP configure-request packet from the base station over the U m interface, the wireless communication device sending an IPCP configure-ack packet to the base station over the U m interface, the wireless communication device sending an IPCP configure-request packet to the base station over the U m interface, and the wireless communication device receiving an IPCP configure-ack packet from the base station over the U m interface.