Transmitting apparatus, receiving apparatus, and communication system
First Claim
1. A transmitting apparatus comprising a front-end transmission processing unit for converting transmission signal into a transmission time slot;
- and a frame generator for generating a frame including a series of n (integer equal to or greater than
1) time slots and a frame guard period added to the series of n time slots to suppress a frame loss due to interference; and
a back-end transmission processing unit for transmitting the generated frame as a radio signal.
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0 Petitions
Accused Products
Abstract
A transmitting apparatus, a receiving apparatus, and a communication system are provided that allow a reduction in a frame loss due to interference caused by use of the same channel. A transmitting apparatus disposed in a base station includes a GPS receiver for receiving a GPS signal, a timing generator for controlling respective function blocks in accordance with the GPS signal and an inter-base-station control signal so as to precisely synchronize the timing of frame transmission among base stations, the front-end transmission processing unit including for converting transmission information into transmission time slots, a frame generator for generating a frame including a plurality of time slots and one frame guard, and a back-end transmission processing unit for transmitting the generated frame as a radio signal.
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Citations
25 Claims
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1. A transmitting apparatus comprising
a front-end transmission processing unit for converting transmission signal into a transmission time slot; - and
a frame generator for generating a frame including a series of n (integer equal to or greater than
1) time slots and a frame guard period added to the series of n time slots to suppress a frame loss due to interference; and
a back-end transmission processing unit for transmitting the generated frame as a radio signal. - View Dependent Claims (2, 3, 4)
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5. A transmitting apparatus disposed in at least one of a plurality of base stations each of which has a capability of communicating, using a signal according to a predetermined modulation scheme, with a communication terminal being within an area assigned to the base station, the transmitting apparatus comprising:
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a front-end transmission processing unit for converting transmission signal into a transmission time slot;
a frame generator for generating a frame including a series of n (integer equal to or greater than
1) time slots and a frame guard period added to the series of n time slots to suppress a frame loss due to interference; and
a back-end transmission processing unit for transmitting the generated frame as a radio signal. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 14, 16, 18, 19)
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13. A receiving apparatus for receiving a radio signal, each frame of which includes a series of n (integer equal to or greater than 1) time slots and a frame guard period added to the series of n time slots to suppress a frame loss due to interference, each time slot including an effective symbol period and a guard period added to the effective symbol period, the receiving apparatus comprising:
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a front-end reception processing unit for receiving the radio signal;
a synchronization position detector for detecting a starting position of an effective symbol period in the received signal;
a timing generator for controlling an operation timing of a functional block, on the basis of synchronization position information supplied from the synchronization position detector;
a reception windowing unit for extracting only an effective symbol period including no time guard period and no frame guard, under the control of the timing generator; and
a back-end reception processing unit for reproducing desired information from a windowed signal supplied by the reception windowing unit.
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15. A receiving apparatus disposed in a communication terminal for receiving a radio signal transmitted from a base station each of which has a capability of communicating, using a signal according to a predetermined modulation scheme, with a communication terminal being within an area assigned to the base station, each frame of the radio signal including a series of n (integer equal to or greater than 1) time slots and a frame guard period added to the series of n time slots to suppress a frame loss due to interference, each time slot including an effective symbol period and a guard period added to the effective symbol period, the receiving apparatus comprising:
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a front-end reception processing unit for receiving the radio signal;
a synchronization position detector for detecting a starting position of an effective symbol period in the received signal;
a timing generator for controlling an operation timing of a functional block, on the basis of synchronization position information supplied from the synchronization position detector;
a reception windowing unit for extracting only an effective symbol period including no time guard period and no frame guard, under the control of the timing generator; and
a back-end reception processing unit for reproducing desired information from a windowed signal supplied by the reception windowing unit.
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17. A communication system comprising a transmitting apparatus and a receiving apparatus,
the transmitting apparatus comprising: -
a front-end transmission processing unit for converting transmission signal into a transmission time slot;
a frame generator for generating a frame including a series of n (integer equal to or greater than
1) time slots and a frame guard period added to the series of n time slots to suppress a frame loss due to interference, each time slot including an effective symbol period and a guard period added to the effective symbol period; and
a back-end transmission processing unit for transmitting the generated frame as a radio signal, the receiving apparatus comprising;
a front-end reception processing unit for receiving a radio signal transmitted from the transmitting apparatus;
a synchronization position detector for detecting a starting position of an effective symbol period in the received signal;
a timing generator for controlling an operation timing of a functional block, on the basis of synchronization position information supplied from the synchronization position detector;
a reception windowing unit for extracting only an effective symbol period including no time guard period and no frame guard, under the control of the timing generator; and
a back-end reception processing unit for reproducing desired information from a windowed signal supplied by the reception windowing unit.
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20. A communication system comprising:
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a plurality of communication terminals; and
a plurality of base stations, each of which has a capability of communicating, using a signal according to a predetermined modulation scheme, with a communication terminal being within an area assigned to the base station, at least one of the plurality of base stations including a transmitting apparatus, the transmitting apparatus comprising;
a front-end transmission processing unit for converting transmission signal into a transmission time slot;
a frame generator for generating a frame including a series of n (integer equal to or greater than
1) time slots and a frame guard period added to the series of n time slots to suppress a frame loss due to interference, each time slot including an effective symbol period and a guard period added to the effective symbol period; and
a back-end transmission processing unit for transmitting the generated frame as a radio signal, each communication terminal including a receiving apparatus comprising;
a front-end reception processing unit for receiving a radio signal transmitted from the transmitting apparatus;
a synchronization position detector for detecting a starting position of an effective symbol period in the received signal;
a timing generator for controlling an operation timing of a functional block, on the basis of synchronization position information supplied from the synchronization position detector;
a reception windowing unit for extracting only an effective symbol period including no time guard period and no frame guard, under the control of the timing generator; and
a back-end reception processing unit for reproducing desired information from a windowed signal supplied by the reception windowing unit. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification