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AssigneeNtt Docomo, Inc.
InventorsMinami Ishii, Takehiro Nakamura
Estimating the term…
A path timing detecting method and a base station are provided which can improve the accuracy of detecting the path timings and check an increase in the processing load in the random access in a mobile communications system. First, the method identifies the effective path timing range using a preamble, followed by detecting effective path timings in the identified path timing range at reception of a message, enabling the method to carry out detection of the path timings at accuracy higher than a conventional method that detects the paths using only the preamble. Besides, identifying the searching range at the reception of the preamble makes it possible to reduce the processing load as compared with a method that detects the path timings from the entire searching range corresponding to a cell radius.
A path timing detecting method in a mobile communications system, in which when a plurality of mobile stations access a base station using a common channel at arbitrary timings, each mobile station transmits a preamble for notifying the base station of an occurrence of a massage before actually transmitting the message, the base station transmits, in response to reception of the preamble, a transmission control signal authorizing the mobile station to transmit the message, and the mobile station that receives the transmission control signal starts transmitting the message, said path timing detecting method comprising:
A base station in a mobile communications system, in which when a plurality of mobile stations access the base station using a common channel at arbitrary timings, a mobile station transmits a preamble for notifying the base station of an occurrence of a massage before actually transmitting the message, the base station transmits, in response to reception of the preamble, a transmission control signal authorizing the mobile station to transmit the message, and the mobile station that receives the transmission control signal starts transmitting the message, said base station comprising:
A mobile communications system in which a plurality of mobile stations access a base station at any arbitrary timings using a common channel, wherein said mobile stations each comprises:
A storing medium that stores, in a form of a communication control program, a path timing detecting method in a mobile communications system, in which when a plurality of mobile stations access a base station using a common channel at arbitrary timings, a mobile station transmits a preamble for notifying the base station of an occurrence of a massage before actually transmitting the message, the base station transmits, in response to reception of the preamble, a transmission control signal authorizing the mobile station to transmit the message, and the mobile station that receives the transmission control signal starts transmitting the message, said path timing detecting method comprising:
Dependencies are inferred from the claim text.