Inserting virtual carrier in conventional OFDM host carrier in communications system
First Claim
1. A method of allocating transmission resources in an OFDM wireless telecommunication system configured to communicate data using a plurality of OFDM sub-carriers, the method comprising:
- allocating transmission resources provided by a first group of the plurality of OFDM sub-carriers within a first frequency band to terminals of a first type;
allocating transmission resources provided by a second group of the plurality of OFDM sub-carriers to terminals of a second type within a second frequency band, the second group being smaller than the first group and the second frequency band being selected from within the first frequency band;
transmitting control information comprising resource allocation information for terminals of the first type over a first bandwidth corresponding to the combined first and second groups of OFDM sub-carriers in different OFDM symbols to transmission of control information comprising resource allocation information for the terminals of the second type; and
transmitting control information comprising resource allocation information for terminals of the second type over a second bandwidth corresponding to the second group of OFDM sub-carriers.
4 Assignments
0 Petitions
Accused Products
Abstract
A method allocating transmission resources in an OFDM wireless telecommunication system configured to communicate data using plural OFDM sub-carriers. The method allocates transmission resources provided by a first group of the plural OFDM sub-carriers within a first frequency band to terminals of first type; allocates transmission resources provided by a second group of the plural OFDM sub-carriers within a second frequency band to terminals of second type, the second group being smaller than the first group and the second frequency band selected from within the first frequency band; transmits control information including resource allocation information for terminals of the first type over a first bandwidth corresponding to the combined first and second groups of OFDM sub-carriers; and then transmits control information including resource allocation information for terminals of the second type over a second bandwidth corresponding to the second group of OFDM sub-carriers.
9 Citations
16 Claims
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1. A method of allocating transmission resources in an OFDM wireless telecommunication system configured to communicate data using a plurality of OFDM sub-carriers, the method comprising:
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allocating transmission resources provided by a first group of the plurality of OFDM sub-carriers within a first frequency band to terminals of a first type; allocating transmission resources provided by a second group of the plurality of OFDM sub-carriers to terminals of a second type within a second frequency band, the second group being smaller than the first group and the second frequency band being selected from within the first frequency band; transmitting control information comprising resource allocation information for terminals of the first type over a first bandwidth corresponding to the combined first and second groups of OFDM sub-carriers in different OFDM symbols to transmission of control information comprising resource allocation information for the terminals of the second type; and transmitting control information comprising resource allocation information for terminals of the second type over a second bandwidth corresponding to the second group of OFDM sub-carriers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An OFDM wireless telecommunication system arranged to communicate data to and from a plurality of mobile terminals over a plurality of OFDM sub-carriers, the system comprising:
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scheduling means configured to allocate transmission resources provided by a first group of the plurality of OFDM sub-carriers within a first frequency band to mobile terminals of a first type and to allocate transmission resources provided by a second group of the plurality of OFDM sub-carriers within a second frequency band to terminals of a second type, the second group being smaller than the first group and the second frequency band being selected from within the first frequency band; and transmission means configured to transmit control information comprising resource allocation information for terminals of the first type over a first bandwidth corresponding to the combined first and second groups of OFDM sub-carriers in different OFDM symbols to transmission of control information comprising resource allocation information for the terminals of the second type and to transmit control information comprising resource allocation information for terminals of the second type over a second bandwidth corresponding to the second group of OFDM sub-carriers.
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14. A mobile terminal comprising:
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a receiver unit for receiving data transmitted from a base station via a plurality of OFDM sub-carriers on a radio downlink; and a transmitter for transmitting data to the base station via a plurality of OFDM sub-carriers on a radio uplink, the base station configured to transmit data to mobile terminals of a first type on a first group of a plurality of OFDM sub-carriers within a first frequency band and to transmit data to mobile terminals of a second type to which the mobile terminal belongs on a second group of the plurality of OFDM sub-carriers within a second frequency band, the second group being smaller than the first group and the second frequency band being selected from within the first frequency band, the base station configured to transmit control information comprising resource allocation information for terminals of the first type over a first bandwidth corresponding to the combined first and second groups of OFDM sub-carriers in different OFDM symbols to transmission of control information comprising resource allocation information for the terminals of the second type and to transmit control information comprising resource allocation information for terminals of the second type over a second bandwidth corresponding to the second group of OFDM sub-carriers, wherein the receiver unit of the mobile terminal is limited to receive data on the radio downlink over the second frequency band. - View Dependent Claims (15)
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16. An apparatus for allocating transmission resources in an OFDM wireless telecommunication system arranged to communicate data using a plurality of OFDM sub-carriers, the apparatus comprising:
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means for allocating transmission resources provided by a first group of the plurality of OFDM sub-carriers within a first frequency band to terminals of a first type; means for allocating transmission resources provided by a second group of the plurality of OFDM sub-carriers to terminals of a second type within a second frequency band, the second group being smaller than the first group and the second frequency band being selected from within the first frequency band; means for transmitting control information comprising resource allocation information for terminals of the first type over a first bandwidth corresponding to the combined first and second groups of OFDM sub-carriers in different OFDM symbols to transmission of control information comprising resource allocation information for the terminals of the second type; and means for transmitting control information comprising resource allocation information for terminals of the second type over a second bandwidth corresponding to the second group of OFDM sub-carriers.
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Specification