Mobile communication system, base station, mobile station, and radio communication method used for them
First Claim
1. A mobile communication system comprising:
- a base station; and
a mobile station which performs data transmission/reception with said base station using a wireless link set between them, wherein said base station comprises;
means for transmitting a downlink individual channel to the mobile station;
means for starting synchronization establishment operation of an uplink individual channel in response to transmission of the uplink individual channel from the mobile station to the base station; and
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at a third timing of a specified cycle previously set and the data to be transmitted between the base station and the mobile station exists, wherein said mobile station comprises;
means for starting synchronization establishment operation of the downlink individual channel at a second timing of a specified cycle previously set;
means for starting transmission of the uplink individual channel to the base station at the time when the synchronization of the downlink has been established;
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing of a specified cycle previously set and the data to be transmitted between the base station and the mobile station exists; and
means for suspending at least one of the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing and the data to be transmitted between the base station and the mobile station does not exist, and wherein when the synchronization of the uplink individual channel or the downlink individual channel has not been established at the third timing, the synchronization establishment operation is continued.
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Accused Products
Abstract
There is provided a mobile communication system capable of reducing the power consumption in the packet wait state and promptly transmitting a packet when data transmission is requested. At a predetermined synchronization establishment interval start time (T1), a base station starts transmission of DPCH (DL) which is a downlink individual channel. A mobile station receives the DPCH (DL) and starts synchronization establishment operation. If the synchronization of the DPCH (DL) is not established by the synchronization establishment interval end time (T2), the synchronization establishment operation is continued. If the base station cannot detect transmission of the DPCH (UL) which is an uplink individual channel from the base station by the synchronization establishment interval end time (T2), the base station continues transmission of the DPCH (DL) to the mobile station and suspends user data transmission in the state update information to the mobile station and DPCH (DL) to the mobile station and control signal transmission to an upper node layer until the DPCH (UL) transmission is detected.
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Citations
40 Claims
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1. A mobile communication system comprising:
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a base station; and
a mobile station which performs data transmission/reception with said base station using a wireless link set between them, wherein said base station comprises;
means for transmitting a downlink individual channel to the mobile station;
means for starting synchronization establishment operation of an uplink individual channel in response to transmission of the uplink individual channel from the mobile station to the base station; and
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at a third timing of a specified cycle previously set and the data to be transmitted between the base station and the mobile station exists, wherein said mobile station comprises;
means for starting synchronization establishment operation of the downlink individual channel at a second timing of a specified cycle previously set;
means for starting transmission of the uplink individual channel to the base station at the time when the synchronization of the downlink has been established;
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing of a specified cycle previously set and the data to be transmitted between the base station and the mobile station exists; and
means for suspending at least one of the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing and the data to be transmitted between the base station and the mobile station does not exist, and wherein when the synchronization of the uplink individual channel or the downlink individual channel has not been established at the third timing, the synchronization establishment operation is continued. - View Dependent Claims (2, 3, 4, 9, 10, 12)
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5. A mobile communication system comprising:
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a base station; and
a mobile station which performs data transmission/reception with the base station using a wireless link set between them, wherein said base station comprises;
means for transmitting a downlink individual channel to the mobile station;
means for starting synchronization establishment operation of an uplink individual channel to be transmitted from the mobile station to base station at a first timing of a specified cycle previously set; and
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at a third timing of a specified cycle previously set and the data to be transmitted between the base station and the mobile station exists, wherein said mobile station comprises;
means for transmitting the uplink individual channel to the base station;
means for starting synchronization establishment operation of the downlink individual channel at a second timing of a specified cycle previously set;
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at a third timing of a specified cycle previously set and the data to be transmitted between the base station and mobile station exists; and
means for suspending at least one of the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing and the data to be transmitted between the base station and the mobile station does not exist, and wherein when the synchronization of the uplink individual channel or the downlink individual channel has not been established at the third timing, the synchronization establishment operation is continued. - View Dependent Claims (6, 7, 8, 11, 38, 39, 40)
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13. A base station that performs data transmission/reception with one or more mobile stations using a wireless link set between them, comprising:
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means for transmitting a downlink individual channel to the mobile station;
means for starting synchronization establishment operation of an uplink individual channel in response to transmission of the uplink individual channel from the mobile station to the own station;
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at a first timing of a specified cycle previously set and the data to be exchanged with the mobile station exists;
means for suspending data transmission/reception for the mobile station in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the first timing and the data to be exchanged with the mobile station does not exist; and
means for continuing the synchronization establishment operation by continuing the transmission of the downlink individual channel or reception of the uplink individual channel in the case where the synchronization of the uplink individual channel or downlink individual channel has not been established at the first timing. - View Dependent Claims (14, 15, 16)
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17. A mobile station for performing data transmission/reception with a base station using a wireless link set between them, comprising:
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means for starting synchronization establishment operation of a downlink individual channel transmitted from the base station at a first timing of a specified cycle previously set;
means for starting transmission of an uplink individual channel to the base station at the time when the synchronization of the downlink has been established;
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at a second timing of a specified cycle previously set and the data to be exchanged the base station exists;
means for suspending at least one of the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the second timing of a specified cycle previously set and the data to be exchanged with the base station does not exist; and
means for continuing the synchronization establishment operation by continuing the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization of the uplink individual channel or downlink individual channel has not been established at the second timing. - View Dependent Claims (19, 20)
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18. A mobile station for performing data transmission/reception with a base station using a wireless link set between them, comprising:
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means for transmitting an uplink individual channel to the base station;
means for starting synchronization establishment operation of a downlink individual channel transmitted from the base station at a first timing of a specified cycle previously set;
means for performing transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at a second timing of a specified cycle previously set and the data to be exchanged with the base station exists;
means for suspending at least one of the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the second timing and the data to be exchanged with the base station does not exist; and
means for continuing the synchronization establishment operation by continuing the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization of the uplink individual channel or downlink individual channel has not been established at the second timing. - View Dependent Claims (33, 34)
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21. A wireless communication method for use in a mobile communication system including a base station and a mobile station which performs data transmission/reception with the base station using a wireless link set between them, said method comprising:
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a step in which the base station transmits a downlink individual channel to the mobile station;
a step in which the base station starts synchronization establishment operation of an uplink individual channel in response to transmission of the uplink individual channel from the mobile station to the base station;
a step in which the mobile station starts synchronization establishment operation of the downlink individual channel at a second timing of a specified cycle previously set;
a step in which the mobile station starts transmission of the uplink individual channel to the base station at the time when the synchronization of the downlink has been established;
a step in which the base station and the mobile station perform transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing of a specified cycle previously set and the data to be transmitted between the base station and mobile station exists;
a step in which the mobile station suspends at least one of the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing and the data to be transmitted between the base station and mobile station does not exist; and
a step in which when the synchronization of the uplink individual channel or the downlink individual channel has not been established at the third timing, the synchronization establishment operation is continued. - View Dependent Claims (22, 23, 24, 29, 30, 32)
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25. A wireless communication method for use in a mobile communication system including a base station and a mobile station which performs data transmission/reception with the base station using a wireless link set between them, comprising:
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a step in which the base station transmits a downlink individual channel to the mobile station;
a step in which the base station starts synchronization establishment operation of an uplink individual channel transmitted from the mobile station to the base station at a first timing of a specified cycle previously set;
a step in which the mobile station transmits of the uplink individual channel to the base station;
a step in which the mobile station starts synchronization establishment operation of the downlink individual channel at a second timing of a specified cycle previously set;
a step in which the base station and the mobile station perform transmission/reception of data to be transmitted in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing of a specified cycle previously set and the data to be transmitted between the base station and the mobile station exists;
a step in which the mobile station suspends at least one of the transmission of the uplink individual channel or reception of the downlink individual channel in the case where the synchronization between the uplink individual channel and downlink individual channel has been established at the third timing and the data to be transmitted between the base station and the mobile station does not exist; and
a step in which when the synchronization of the uplink individual channel or the downlink individual channel has not been established at the third timing, the synchronization establishment operation is continued. - View Dependent Claims (26, 27, 28, 31, 35, 36, 37)
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Specification