MOBILE RADIO COMMUNICATION SYSTEM, COMMUNICATION APPARATUS APPLIED IN A MOBILE RADIO COMMUNICATION SYSTEM, AND MOBILE RADIO COMMUNICATION METHOD
First Claim
1. A mobile radio communication method employed in a mobile radio communication system that comprises a first communication system employing a code division multiple access method including a transmitter for transmitting a first frame having a first frame-length (L1), and for transmitting a first frame, at a first transmission period which is defined as a period required to transmit a first specified number of the first frames;
- and a receiver for receiving the frame transmitted by the transmitter; and
a second communication system for transmitting a second frame having a second frame-length (L2), employing a GSM method where the second frame is transmitted at a second transmission period which is defined as a period required to transmit a second specified number of the second frames and not an integer-times of the first transmission period, the second communication system coexisting with the first communication system, the mobile radio communication method including the steps of;
transmitting the first frame from the transmitter in the first communication system to the receiver in the first communication system, the transmitting step including setting a plurality of idle periods in the first transmission period;
determining an idle-period interval, defined as an interval between corresponding portions in an idle period and in one of other idle periods, such that the idle-period interval corresponds to an odd-number times of a value obtained by dividing the second frame-length (L2) by a predetermined even number; and
transmitting the first frames including the idle periods which are placed at the determined idle-period interval to the receiver in the first communication system; and
observing a control data transmission channel in the second communication system during the idle periods at the receiver in the first communication system.
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Accused Products
Abstract
In the mobile radio communication system where the UMTS and an another system coexist an idle slot for observing the frequency component of another system is inserted in one superframe of UMTS. The duration of this idle slot is at most half of the duration of one frame that form the superframe and it is inserted at an interval of a specified number of frames. Therefore, the frequency component of the another system can be observed securely from the UMTS. Further, the deterioration of interleaving performance of the compressed mode frames during such observation can be suppressed.
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Citations
12 Claims
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1. A mobile radio communication method employed in a mobile radio communication system that comprises
a first communication system employing a code division multiple access method including a transmitter for transmitting a first frame having a first frame-length (L1), and for transmitting a first frame, at a first transmission period which is defined as a period required to transmit a first specified number of the first frames; - and
a receiver for receiving the frame transmitted by the transmitter; and
a second communication system for transmitting a second frame having a second frame-length (L2), employing a GSM method where the second frame is transmitted at a second transmission period which is defined as a period required to transmit a second specified number of the second frames and not an integer-times of the first transmission period, the second communication system coexisting with the first communication system, the mobile radio communication method including the steps of;
transmitting the first frame from the transmitter in the first communication system to the receiver in the first communication system, the transmitting step including setting a plurality of idle periods in the first transmission period;
determining an idle-period interval, defined as an interval between corresponding portions in an idle period and in one of other idle periods, such that the idle-period interval corresponds to an odd-number times of a value obtained by dividing the second frame-length (L2) by a predetermined even number; and
transmitting the first frames including the idle periods which are placed at the determined idle-period interval to the receiver in the first communication system; and
observing a control data transmission channel in the second communication system during the idle periods at the receiver in the first communication system. - View Dependent Claims (2)
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3. A mobile radio communication method employed in a transmitter included in a first communication system in a mobile radio communication system, wherein the system comprises
the first communication system employing a code division multiple access method including the transmitter for transmitting a first frame having a first frame-length (L1), and for transmitting a first frame, at a first transmission period which is defined as a period required to transmit a first specified number of the first frames; - and
a receiver for receiving the frame transmitted by the transmitter; and
a second communication system for transmitting a second frame having a second frame-length (L2), employing a GSM method where the second frame is transmitted at a second transmission period which is defined as a period required to transmit a second specified number of the second frames and not an integer-times of the first transmission period, the second communication system coexisting with the first communication system, the mobile radio communication method including the steps of;
transmitting the first frame from the transmitter in the first communication system to the receiver in the first communication system, the transmitting step including setting a plurality of idle periods in the first transmission period;
determining an idle-period interval defined as an interval between corresponding portions in an idle period and in one of other idle periods, such that the idle-period interval corresponds to a value of an odd-number times of a value obtained by dividing the second frame-length (L2) by a predetermined even number; and
transmitting the first frames including the idle periods which are placed at the determined idle-period interval to the receiver in the first communication system, which observes a control data transmission channel in the second communication system during the idle periods. - View Dependent Claims (4)
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5. A mobile radio communication system, comprising;
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a first communication system employing a code division multiple access method including a transmitter for transmitting a first frame having a first frame-length (L1), and for transmitting a first frame, at a first transmission period which is defined as a period required to transmit a first specified number of the first frames; and
a receiver for receiving the frame transmitted by the transmitter; and
a second communication system for transmitting a second frame having a second frame-length (L2), employing a GSM method where the second frame is transmitted at a second transmission period which is defined as a period required to transmit a second specified number of the second frames and not an integer-times of the first transmission period, the second communication system coexisting with the first communication system, wherein the transmitter in the first communication system is configured to set a plurality of idle periods in the first transmission period;
to determine an idle-period interval defined as an interval between corresponding portions in an idle period and in one of other idle periods, such that the idle-period interval corresponds to an odd-number times of a value obtained by dividing the second frame-length (L2) by a predetermined even number; and
to transmit the first frames including the idle periods which are placed at the determined idle-period interval to the receiver in the first communication system andthe receiver in the first communication system is configured to observe a control data transmission channel in the second communication system during the idle periods. - View Dependent Claims (6)
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7. A transmitter included in a first communication system in a mobile radio communication system, wherein the mobile ratio communication system comprises
the first communication system employing a code division multiple access method and including the transmitter for transmitting a first frame having a first frame-length (L1), and for transmitting a first frame, at a first transmission period which is defined as a period required to transmit a first specified number of the first frames; - and
a receiver for receiving the frame transmitted by the transmitter; and
a second communication system for transmitting a second frame having a second frame-length (L2), employing a GSM method where the second frame is transmitted at a second transmission period which is defined as a period required to transmit a second specified number of the second frames and not an integer-times of the first transmission period, the second communication system coexisting with the first communication system, wherein the transmitter in the first communication system is configured to set a plurality of idle periods in the first transmission period;
to determine an idle-period interval defined as an interval between corresponding portions in an idle period and in one of other idleperiods, such that the idle-period interval corresponds to an odd-number times of a value obtained by dividing the second frame-length (L2) by a predetermined even number, and to transmit the first frames including the idle periods which are placed at the determined idle-period interval to the receiver in the first communication system, which observes a control data transmission channel in the second communication system during the idle periods. - View Dependent Claims (8)
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9. A mobile radio communication method employed in a receiver in a first communication system in a mobile radio communication system, wherein the mobile radio communication system comprises
the first communication system employing a code division multiple access method including a transmitter for transmitting a first frame having a first frame-length (L1), at a first transmission period which is defined as a period required to transmit a first specified number of the first frames; - and
the receiver for receiving the frame transmitted by the transmitter; and
a second communication system for transmitting a second frame having a second frame-length (L2), employing a GSM method where the second frame is transmitted at a second transmission period which is defined as a period required to transmit a second specified number of the second frames and not an integer-times of the first transmission period, the second communication system coexisting with the first communication system, the mobile radio communication method including the steps of;
receiving the first frame transmitted from the transmitter in the first communication system to the receiver, wherein the transmitter in the first communication system sets a plurality of idle periods within the first transmission period, determines an idle-period interval defined as an interval between corresponding portions in an idle period and in one of other idle periods, such that the idle-period interval corresponds to an odd-number times of a value obtained by dividing the second frame-length (L2) by a predetermined even number, and transmits the first frames including the idle periods which are placed at the determined idle-period interval to the receiver; and
observing a control data transmission channel in the second communication system during the idle periods. - View Dependent Claims (10)
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11. A receiver employed in a first communication system in a mobile radio communication system, wherein the mobile radio communication system comprises
the first communication system employing a code division multiple access method including a transmitter for transmitting a first frame having a first frame-length (L1), at a first transmission period which is defined as a period required to transmit a first specified number of the first frames; - and
the receiver for receiving the frame transmitted by the transmitter; and
a second communication system for transmitting a second frame having a second frame-length (L2), employing a GSM method where the second frame is transmitted at a second transmission period which is defined as a period required to transmit a second specified number of the second frames and not an integer-times of the first transmission period, the second communication system coexisting with the first communication system, wherein the receiver is configured to receive the first frame transmitted from the transmitter in the first communication system to the receiver, wherein the transmitter in the first communication system sets a plurality of idle periods within the first transmission period, determines an idle-period interval defined as an interval between corresponding portions in an idle period and in one of other idle periods, such that the idle-period interval corresponds to an odd-number times of a value obtained by dividing the second frame-length (L2) by a predetermined even number, and transmits the first frames including the idle periods which are placed at the determined idle-period interval to the receiver; and
observing a control data transmission channel in the second communication system during the idle periods. - View Dependent Claims (12)
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Specification