Patent ID: 9736865
Date: 2017-08-15
CPC Classifications: H04W

Claim:
1. A method of performing random access by a User Equipment (UE) in a wireless communication system, the method comprising: generating at least two random access signals having their own transmission priorities; and transmitting, to at least one target communication node, the at least two random access signals based on their own transmission priorities for completing a first-trial random access transmission, wherein the generating the at least two random access signals having their own transmission priorities comprises: setting a transmission priority for each of the at least two random access signals based on random access conditions; and determining at least one random access parameter in each of the at least two random access signals, according to the set transmission priority, wherein the random access parameter includes at least one of a radio access technology (RAT) for each signal, a target communication node for each signal, a channel for each signal, a channel group for each signal, a power for each signal, a transmission order for each signal, a modulation parameter for each signal, a coding parameter for each signal, a length for each signal, a bandwidth for each signal, a processing gain for each signal, and information included in each signal, wherein the channel for each signal includes at least one of frequency channel, time channel, code channel, and antenna, wherein the random access condition includes at least one of a radio access technology (RAT) preference, a service charge, a neighbor list ranking, a channel condition, a service condition, an access condition, a type of a target communication node for random access, a bandwidth for use in random access, a distance between a user equipment (UE) and a target communication node for random access, the loading factor of a target communication node for random access, information on collided channels, and a collision probability, wherein the channel condition includes at least one of a quality factor related to channel characteristics and a quality factor related to space characteristics, and wherein the transmission priority of at least one random access signal of the at least two random access signals is different from the transmission priority of the rest of the at least two random access signals.