Mobile communication system, base station apparatus, user apparatus and method
First Claim
1. A mobile communication system including multiple cells having different system bandwidths, whereinin a cell having a system bandwidth wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, an uplink control channel unattached to the uplink shared data channel and the random access channel are frequency-division multiplexed in the same subframe, andin a cell that does not have a system band wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, an uplink control channel unattached to the uplink shared data channel and the random access channel are time-division multiplexed, and the random access channel is transmitted for a transmission period of a downlink signal not being required to feed acknowledgement information indicative of positive acknowledgement or negative acknowledgement back to a base station apparatus.
1 Assignment
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Accused Products
Abstract
In a cell having a system bandwidth wide enough to allow a RACH from a UE and a PUSCH from another UE to be frequency-division multiplexed in the same subframe, a PUCCH unattached to the PDSCH and the RACH are frequency-division multiplexed in the same subframe. In a cell having a narrow system bandwidth, a PUCCH unattached to the PUSCH and the RACH are time-division multiplexed, and the RACH is transmitted for a period for a BCH or others not required to feed ACK/NACK back to a base station apparatus. Alternatively, the PUCCH unattached to the PUSCH and the RACH are frequency-division multiplexed, and the bandwidth for the RACH may be set to be narrower than the bandwidth scheduled for the RACH in a cell having a wider system bandwidth.
11 Citations
18 Claims
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1. A mobile communication system including multiple cells having different system bandwidths, wherein
in a cell having a system bandwidth wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, an uplink control channel unattached to the uplink shared data channel and the random access channel are frequency-division multiplexed in the same subframe, and in a cell that does not have a system band wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, an uplink control channel unattached to the uplink shared data channel and the random access channel are time-division multiplexed, and the random access channel is transmitted for a transmission period of a downlink signal not being required to feed acknowledgement information indicative of positive acknowledgement or negative acknowledgement back to a base station apparatus.
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2. A base station apparatus for use in a mobile communication system including multiple cells having different system bandwidths, the apparatus comprising:
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a reception unit configured to receive a signal from a user apparatus; a determination unit configured to determine whether the received signal includes a random access channel; and a transmission unit configured to transmit a control signal to the user apparatus transmitting the random access channel, wherein if a system bandwidth is not wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, a signal resulting in time-division multiplexing of an uplink control channel unattached to the uplink shared data channel and the random access channel is received in an uplink, and the random access channel is transmitted for a transmission period of a downlink signal not being required to feed acknowledgement information indicative of positive acknowledgement or negative acknowledgement back to the base station apparatus.
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3. A user apparatus for use in a mobile communication system including multiple cells having different system bandwidths, the apparatus comprising:
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a reception unit configured to receive broadcast information; a determination unit configured to determine which resource is allowed to transmit a random access channel based on the broadcast information; and a transmission unit configured to transmit the random access channel, wherein if a system bandwidth for a resident cell is not wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, a signal resulting in time-division multiplexing of an uplink control channel unattached to the uplink shared data channel and the random access channel is transmitted in an uplink, and the random access channel is transmitted for a transmission period of a downlink signal not being required to feed acknowledgement information indicative of positive acknowledgement or negative acknowledgement back to a base station apparatus.
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4. A method for use in a mobile communication system including multiple cells having different system bandwidths, the method comprising:
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transmitting information indicative of a resource to a user apparatus, the resource being allowed to transmit a random access channel; and transmitting the random access channel from the user apparatus to a base station apparatus, wherein if a system bandwidth for a resident cell is not wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, a signal resulting in time-division multiplexing of an uplink control channel unattached to the uplink shared data channel and the random access channel is transmitted in an uplink, and the random access channel is transmitted for a transmission period of a downlink signal not being required to feed acknowledgement information indicative of positive acknowledgement or negative acknowledgement back to the base station apparatus.
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5. A mobile communication system including multiple cells having different system bandwidths, wherein
in a cell having a system bandwidth wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, an uplink control channel unattached to the uplink shared data channel and the random access channel are frequency-division multiplexed in the same subframe, in a cell that does not have a system bandwidth wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, an uplink control channel unattached to the uplink shared data channel and the random access channel are frequency-division multiplexed, and a bandwidth scheduled for the random access channel in the cell having the system bandwidth not being wide enough is narrower than a bandwidth scheduled for the random access channel in the cell having the system bandwidth wide enough.
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6. A base station apparatus for use in a mobile communication system including multiple cells having different system bandwidths, the apparatus comprising:
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a reception unit configured to receive a signal from a user apparatus; a determination unit configured to determine whether the received signal includes a random access channel; and a transmission unit configured to transmit a control signal to the user apparatus transmitting the random access channel, wherein if a system bandwidth is not wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, a signal resulting in frequency-division multiplexing of an uplink control channel unattached to the uplink shared data channel and the random access channel is received in an uplink, and a bandwidth scheduled for the random access channel in the cell having the system bandwidth not being wide enough is narrower than a bandwidth scheduled for the random access channel in the cell having the system bandwidth wide enough.
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7. A user apparatus for use in a mobile communication system including multiple cells having different system bandwidths, the apparatus comprising:
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a reception unit configured to receive broadcast information; a determination unit configured to determine which resource is allowed to transmit a random access channel from the broadcast information; and a transmission unit configured to transmit the random access channel, wherein if a system bandwidth for a resident cell is not wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, a signal resulting in frequency-division multiplexing of an uplink control channel unattached to the uplink shared data channel and the random access channel is transmitted in an uplink, and a bandwidth scheduled for the random access channel in the cell having the system bandwidth not being wide enough is narrower than a bandwidth scheduled for the random access channel in the cell having the system bandwidth wide enough.
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8. A method for use in a mobile communication system including multiple cells having different system bandwidths, the method comprising:
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transmitting information indicative of a resource to a user apparatus, the resource being allowed to transmit a random access channel; and transmitting the random access channel from the user apparatus to a base station apparatus, wherein if a system bandwidth for a resident cell is not wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, a signal resulting in frequency-division multiplexing of an uplink control channel unattached to the uplink shared data channel and the random access channel is transmitted in an uplink, and a bandwidth scheduled for the random access channel in the cell having the system bandwidth not being wide enough is narrower than a bandwidth scheduled for the random access channel in the cell having the system bandwidth wide enough.
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9. Abase station apparatus for use in a mobile communication system including multiple cells having different system bandwidths, the apparatus comprising:
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a reception unit configured to receive a signal from a user apparatus; a determination unit configured to determine whether the received signal includes a random access channel; and a transmission unit configured to transmit a control signal to the user apparatus transmitting the random access channel, wherein if a system bandwidth is wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, an uplink control channel unattached to the uplink shared data channel and the random access channel are frequency-division multiplexed in the same subframe. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A user apparatus for use in a mobile communication system including multiple cells having different system bandwidths, the apparatus comprising:
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a reception unit configured to receive broadcast information; a determination unit configured to determine which resource is allowed to transmit a random access channel based on the broadcast information; and a transmission unit configured to transmit the random access channel, wherein if a system bandwidth is wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, a signal resulting in frequency-division multiplexing of an uplink control channel unattached to the uplink shared data channel and a random access channel in the same subframe is transmitted.
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18. A method for use in a mobile communication system including multiple cells having different system bandwidths, the method comprising:
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transmitting information indicative of a resource to a user apparatus, the resource being allowed to transmit a random access channel; and transmitting the random access channel from the user apparatus to a base station apparatus, wherein if a system bandwidth is wide enough to allow a random access channel from a user apparatus and an uplink shared data channel from another user apparatus to be frequency-division multiplexed in a same subframe, a signal resulting in frequency-division multiplexing of an uplink control channel unattached to the uplink shared data channel and the random access channel in the same subframe is transmitted in an uplink.
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Specification