Abstract
The invention offers a kind of random access method that can establish the special channel between wireless communication terminal device and base station device in short timeand the wireless terminal device that performs this kind of random access method.In the devicein process ST320RACH subchannel distribution unit(211)distributes the sending packet at random that the copy unit(202)inputs to discretional accessorial carrier cave through discretional time slot of RACH.In process ST330the distribution unit(210)judges the distribution result of distribution unit(211)in RACH subchannel occurs repetition or not.When the distribution unit(210) judges the distribution result occurs repetitionthe distribution unit(210) makes anyone of the distribution unit in repeated RACH subchannel perform the distribution of process ST320.On the other handwhen the distribution result that judges does not occurs repetitionthen performing process ST340.
There are disclosed a random access method for establishing an individual channel between a radio communication terminal device and a base station device in a short time and a radio communication terminal device executing the random access method. In this device in step ST320 a RACH sub-channel allocation unit (211) allocates a transmission packet inputted from a replication unit (202) to an arbitrary sub-carrier at the RACH arbitrary time slot at random. In step ST330 an allocation unit (210) judges whether an overlap is generated in the allocation result obtained by the RACH sub-channel allocation unit (211). When the allocation unit (210) judges that an overlap is generated in the allocation result the allocation unit (210) causes one of the RACH sub-channel allocation units (211) which has caused the overlap to again perform allocation of step ST320. On the other hand when judgment is made that no overlap is generated in the allocation result step ST340 is executed.
There are disclosed a random access method for establishing an individual channel between a radio communication terminal device and a base station device in a short time and a radio communication terminal device executing the random access method. In this device in step ST320 a RACH sub-channel allocation unit (211) allocates a transmission packet inputted from a replication unit (202) to an arbitrary sub-carrier at the RACH arbitrary time slot at random. In step ST330 an allocation unit (210) judges whether an overlap is generated in the allocation result obtained by the RACH sub-channel allocation unit (211). When the allocation unit (210) judges that an overlap is generated in the allocation result the allocation unit (210) causes one of the RACH sub-channel allocation units (211) which has caused the overlap to again perform allocation of step ST320. On the other hand when judgment is made that no overlap is generated in the allocation result step ST340 is executed.
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Specification Information
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