Abstract: A method and an apparatus for obtaining a remote Internet Protocol (IP) address are provided. The method includes: receiving, by a first client, a first detection IP packet from a remote server through a Point to Point Protocol (PPP) interface, in which the first detection IP packet carries a first IP address allocated by the remote server for the first client; and configuring the first IP address to be an IP address of the first client. Through the method and the apparatus, the remote server is capable of allocating a remote IP address of a client.

Abstract: The disclosure discloses a method for generating a reference signal. The method includes: a user equipment receiving a first signaling carrying reference signal solution information sent by a base station, wherein the reference signal solution information has at least one mapping relation with at least one piece of orthogonal code configuration information and at least one hopping mode, and the at least one mapping relation is stored in the base station and the user equipment; determining a corresponding piece of orthogonal code configuration information and a corresponding hopping mode according to the received reference signal solution information and the stored at least one mapping relation; and generating a reference signal according to the determined piece of orthogonal code configuration information and the determined hopping mode.