Abstract
A communication terminal apparatus that exhibits a shorter time period required until a start of communication and causes the throughput in the wireless communication system to be less reduced. In this apparatus when the number N of retransmissions notified by a response determining part ( 107) is zero a subchannel-to-be-used selecting part (108) selects a subchannel among others which exhibits the highest order one of the reception qualities of the subchannels notified by a reception quality determining part (106) and then notifies the selected subchannel to a subchannel allocating part (113). When the notified number N of retransmissions is one or more the response determining part (107) selects a subchannel which exhibits the N-th lower order reception quality than the highest order reception quality based on the reception qualities of the subchannels notified by the reception quality determining part (106) for a pilot signal received after a transmission of the latest access request signal and then notifies the selected subchannel to the subchannel allocating part (113).
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Specification Information
Specification Information
Technologies
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Technologies
Resource configuration Random access
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Network access
Claim
1. A method of communication between a user equipment and a base station, the method comprising:
transmitting a random access signal through a random access channel, said random access signal using a first spreading code randomly selected from a plurality of spreading codes;
determining whether the user equipment receives an access permission signal before a response time period elapses;
in the event that the user equipment receives the access permission signal before the response time period elapses, transmitting data to the base station through an uplink data channel; and
in the event that the user equipment does not receive the access permission signal before the response time period elapses, retransmitting the random access signal through the random access channel without setting a back-off time after the response time period, said retransmitted random access signal using a second spreading code randomly selected from a plurality of spreading codes.', 'transmitting a random access signal through a random access channel, said random access signal using a first spreading code randomly selected from a plurality of spreading codes;', 'determining whether the user equipment receives an access permission signal before a response time period elapses;', 'in the event that the user equipment receives the access permission signal before the response time period elapses, transmitting data to the base station through an uplink data channel; and', 'in the event that the user equipment does not receive the access permission signal before the response time period elapses, retransmitting the random access signal through the random access channel without setting a back-off time after the response time period, said retransmitted random access signal using a second spreading code randomly selected from a plurality of spreading codes.
2. A user equipment for communicating with a base station, the user equipment comprising:
a transmitter configured to transmit a random access signal through a random access channel, said random access signal using a first spreading code randomly selected from a plurality of spreading codes, and
a receiver configured to receive an access permission signal, wherein:
said transmitter is configured to transmit data to the base station through an uplink data channel in the event that the receiver receives the access permission signal before a response time period elapses; and
said transmitter is configured to retransmit the random access signal through the random access channel without setting a back-off time after the response time period in the event that the receiver does not receive the access permission signal before the response time period elapses, said retransmitted random access signal using a second spreading code randomly selected from a plurality of spreading codes.', 'a transmitter configured to transmit a random access signal through a random access channel, said random access signal using a first spreading code randomly selected from a plurality of spreading codes, and', 'a receiver configured to receive an access permission signal, wherein:', 'said transmitter is configured to transmit data to the base station through an uplink data channel in the event that the receiver receives the access permission signal before a response time period elapses; and', 'said transmitter is configured to retransmit the random access signal through the random access channel without setting a back-off time after the response time period in the event that the receiver does not receive the access permission signal before the response time period elapses, said retransmitted random access signal using a second spreading code randomly selected from a plurality of spreading codes.
3. A method of transmitting a random access signal, the method comprising:
transmitting the random access signal using a spreading code randomly selected from a plurality of spreading codes;
determining whether a response to the random access signal is made before a response period elapses; and
in the event of determining that the response is not made before the response period elapses, retransmitting the random access signal using a spreading code randomly selected from the plurality of spreading codes without setting a back-off time after the response time period.', 'transmitting the random access signal using a spreading code randomly selected from a plurality of spreading codes;', 'determining whether a response to the random access signal is made before a response period elapses; and', 'in the event of determining that the response is not made before the response period elapses, retransmitting the random access signal using a spreading code randomly selected from the plurality of spreading codes without setting a back-off time after the response time period.
4. A user equipment that transmits a random access signal, the user equipment comprising:
a transmitter configured to transmit the random access signal using a spreading code randomly selected from a plurality of spreading codes; and
a determiner configured to determine whether a response to the random access signal is made before a response period elapses, wherein:
said transmitter is configured to retransmit the random access signal using a spreading code randomly selected from the plurality of spreading codes without setting a back-off time after the response period, in the event that the determiner determines that the response is not made before the response period elapses.', 'a transmitter configured to transmit the random access signal using a spreading code randomly selected from a plurality of spreading codes; and', 'a determiner configured to determine whether a response to the random access signal is made before a response period elapses, wherein:', 'said transmitter is configured to retransmit the random access signal using a spreading code randomly selected from the plurality of spreading codes without setting a back-off time after the response period, in the event that the determiner determines that the response is not made before the response period elapses.']
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.