COMMUNICATIONS SYSTEM
First Claim
Patent Images
1. A communications device comprising:
- a transceiver operable to transmit downlink data to and to receive uplink data from a remote communications device using a plurality of component carriers; and
a controller operable to control the transceiver so that the communications device transmits broadcast and paging channels on an anchor subset of said component carriers but not on another subset of the component carriers.
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Accused Products
Abstract
A mobile communications system is proposed in which mobile communications devices are arranged to transmit signals to and to receive signals from a base station using one or a subset of available sub-bands, with the base station being configured to move the mobile communications devices between the sub-bands. An anchor sub-band is also provided on which idle mobile communications devices camp until they are moved to one or more other sub-bands in addition to or instead of the anchor sub-band.
43 Citations
25 Claims
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1. A communications device comprising:
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a transceiver operable to transmit downlink data to and to receive uplink data from a remote communications device using a plurality of component carriers; and a controller operable to control the transceiver so that the communications device transmits broadcast and paging channels on an anchor subset of said component carriers but not on another subset of the component carriers. - View Dependent Claims (2, 3, 4, 5, 25)
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6. A communications device comprising:
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a transceiver operable to transmit uplink data to and to receive downlink data from a remote communications device on a plurality of component carriers, wherein an anchor subset of the component carriers include broadcast and paging channels; and a controller operable to control the transceiver so that during an idle mode, the communications device is operable to camp on one or more of the component carriers in the anchor subset. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A communications device comprising:
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a transceiver operable to transmit downlink data to and to receive uplink data from a remote communications device using a subset of component carriers; and a controller operable to control the transceiver so that; i) during a first interval the communications device is operable to communicate with the remote communications device on a first subset of component carriers; ii) the communications device transmits control data to the remote communications device using the first subset of component carriers, the control data instructing the remote communications device to communicate with the communications device using a second subset of component carriers; and iii) during a second interval the communications device is operable to communicate with the remote communications device on the second subset of component carriers. - View Dependent Claims (16)
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15. A communications device comprising:
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a transceiver operable to transmit uplink data to and to receive downlink data from a remote communications device using a subset of component carriers; and a controller operable to; i) control the transceiver so that during a first interval the communications device is operable to communicate with the remote communications device on a first subset of component carriers; ii) receive control data from the remote communications device using the first subset of component carriers, the control data instructing the communications device to communicate with the remote communications device using a second subset of component carriers; and iii) control the transceiver so that during a second interval the communications device is operable to communicate with the remote communications device on the second subset of component carriers. - View Dependent Claims (17, 18, 19, 20)
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21. A method performed by a communications device comprising:
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transmitting downlink data to and receiving uplink data from a remote communications device using a plurality of component carriers; and controlling a transceiver so that the communications device transmits broadcast and paging channels on an anchor subset of said component carriers but not on another subset of the component carriers.
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22. A method performed by a communications device comprising:
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transmitting uplink data to and receiving downlink data from a remote communications device on a plurality of component carriers, wherein an anchor subset of the component carriers include broadcast and paging channels; and controlling a transceiver so that during an idle mode, the communications device camps on one or more of the component carriers in the anchor subset.
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23. A method performed by a communications device comprising:
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transmitting downlink data to and receiving uplink data from a remote communications device using a subset of component carriers; and controlling a transceiver so that; i) during a first interval the communications device communicates with the remote communications device on a first subset of component carriers; ii) the communications device transmits control data to the remote communications device using the first subset of component carriers, the control data instructing the remote communications device to communicate with the communications device using a second subset of component carriers; and iii) during a second interval the communications device communicates with the remote communications device on the second subset of component carriers.
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24. A method performed by a communications device comprising:
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transmitting uplink data to and receiving downlink data from a remote communications device using a subset of component carriers; and controlling a transceiver; i) so that during a first interval the communications device communicates with the remote communications device on a first subset of component carriers; ii) to receive control data from the remote communications device using the first subset of component carriers, the control data instructing the communications device to communicate with the remote communications device using a second, different, subset of component carriers; and iii) so that during a second interval the communications device communicates with the remote communications device on the second subset of component carriers.
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Specification