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US 8,478,194 B2Granted
Radio base station, relay station and radio communication method
AssigneeFujitsu Limited
InventorMasato Okuda
Life of this patent
Estimating the term…
Abstract
A relay station has a reception unit receiving a signal sequence indicating a connection request, from among a predetermined signal sequence group; a control unit generating a ranging request message indicating that a radio terminal newly requesting connection exists; and a transmission unit transmitting the ranging request message to a radio base station.
Claims12
A relay station comprising:
- a reception unit that receives a signal sequence indicating a connection request from a radio terminal, the signal sequence being selected by the radio terminal from among a group of predetermined signal sequences shared by a plurality of radio terminals;
- a control unit that generates a message upon receiving the signal sequence, the message indicating that a radio terminal newly requesting connection exists;
- and
- a transmission unit that transmits the message to a radio base station,
- wherein the reception unit is configured to measure, when the signal sequence is received, deviations of transmission parameters of the radio terminal in the received signal sequence from standard transmission parameters, and
- the control unit is configured to generate the message when the measured deviations of the transmission parameters are within predetermined ranges.
3 more elements
A radio base station comprising:
- a reception unit that receives a message, transmitted from a relay station in response to reception of a signal sequence indicating a connection request from a radio terminal, the signal sequence being selected by the radio terminal from among a group of predetermined signal sequences shared by a plurality of radio terminals;
- a control unit that determines in response to the reception of the message whether to newly permit connection with the radio terminal, and generates a response message including the determination result;
- and
- a transmission unit that transmits the response message to the relay station,
- wherein the relay station is configured to measure, when the signal sequence is received, deviations of transmission parameters of the radio terminal in the received signal sequence from standard transmission parameters, and configured to transmit the message to the radio base station when the measured deviations of the transmission parameters are within predetermined ranges.
2 more elements
A radio communication method comprising:
- in a relay station, receiving a signal sequence indicating a connection request from a radio terminal, the signal sequence being selected by the radio terminal from among a group of predetermined signal sequences shared by a plurality of radio terminals, measuring, when the signal sequence is received, deviations of transmission parameters of the radio terminal in the received signal sequence from standard transmission parameters, generating a message indicating that the radio terminal newly requesting connection exits, when the measured deviations of the transmission parameters are within predetermined ranges, and transmitting the message;
- and
- in a radio base station, receiving the message, determining whether or not to newly permit connection of the radio terminal, generating a response message including the determination result, and transmitting the response message.
Dependencies are inferred from the claim text.