Base station device, mobile station device, communication system, and communication method
First Claim
1. A base station device configured to communicate with a mobile station device by carrier aggregation using a first cell and a second cell, the base station device comprising a memory and a processor coupled to the memory, the processor configured to:
- generate a synchronization signal corresponding to a first cell identity for identifying a cell; and
generate a first transmission signal including the synchronization signal, a first physical channel and a first reference signal, wherein the first physical channel and the first reference signal are generated based on the first cell identity, and generate a second transmission signal including a second physical channel and a second reference signal, wherein the second physical channel and the second reference signal are generated based on a second cell identity;
send information indicating the second cell identity; and
transmit the first transmission signal via a first frequency band, and transmit the second transmission signal via a second frequency band different from the first frequency band, whereinthe second frequency band is a sub-component carrier with respect to the first frequency band, andthe processor is configured to, after the mobile station device establishes connection in the cell via a cell search using the synchronization signal in the first transmission signal, start to send the information, the information being carried by the first transmission signal.
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Abstract
A communication system which performs communication between a base station device configuring at least one cell and a mobile station device, wherein: the base station device includes: a synchronization signal generation unit which generates a synchronization signal corresponding to a cell identity for identifying a cell; and a transmission unit which generates a first transmission signal including the synchronization signal using a first parameter obtained from the cell identity, generates a second transmission signal excluding the synchronization signal using a second parameter obtained from a virtual cell identity different from the cell identity, transmits the first transmission signal using a first frequency band, and transmits the second transmission signal via a second frequency band different from the first frequency band. The mobile station device includes: a reception unit which receives a first reception signal including the synchronization signal using the first parameter obtained from the cell identity via the first frequency band and receives a second reception signal using the second parameter obtained from the virtual cell identity via the second frequency band.
14 Citations
16 Claims
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1. A base station device configured to communicate with a mobile station device by carrier aggregation using a first cell and a second cell, the base station device comprising a memory and a processor coupled to the memory, the processor configured to:
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generate a synchronization signal corresponding to a first cell identity for identifying a cell; and generate a first transmission signal including the synchronization signal, a first physical channel and a first reference signal, wherein the first physical channel and the first reference signal are generated based on the first cell identity, and generate a second transmission signal including a second physical channel and a second reference signal, wherein the second physical channel and the second reference signal are generated based on a second cell identity; send information indicating the second cell identity; and transmit the first transmission signal via a first frequency band, and transmit the second transmission signal via a second frequency band different from the first frequency band, wherein the second frequency band is a sub-component carrier with respect to the first frequency band, and the processor is configured to, after the mobile station device establishes connection in the cell via a cell search using the synchronization signal in the first transmission signal, start to send the information, the information being carried by the first transmission signal. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile station device configured to communicate with a base station device by carrier aggregation using a first cell and a second cell, the mobile station device comprising a memory and a processor coupled to the memory, the processor configured to:
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receive a first reception signal via a first frequency band and receive a second reception signal via a second frequency band different from the first frequency band, wherein the first reception signal includes a synchronization signal, a first physical channel and a first reference signal, wherein the first physical channel and the first reference signal are obtained using a first cell identity, the second reception signal includes a second physical channel and a second reference signal, wherein the second physical channel and the second reference signal are obtained using a second cell identity, and acquire information indicating the second cell identity, the information being carried by the first reception signal; and extract the information from the first reception signal carried after the mobile station establishes connection in the cell via a cell search using the synchronization signal in the first reception signal, wherein the second frequency band is a sub-component carrier with respect to the first frequency band. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A communication method for use in a base station device configured to perform communication with a mobile station device, the communication method comprising:
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(a) generating a synchronization signal corresponding to a first cell identity for identifying a cell; (b) generating a first transmission signal including the synchronization signal, a first physical channel and a first reference signal, wherein the first physical channel and the first reference signal are generated based on the first cell identity; (c) transmitting the first transmission signal via a first frequency band; (d) generating the first transmission signal and a second transmission signal including a second physical channel and a second reference signal, wherein the second physical channel and the second reference signal are generated based on a second cell identity different from the first cell identity; (e) sending information indicating the second cell identity; and (f) transmitting the first transmission signal via a first frequency band and the second transmission signal via a second frequency band different from the first frequency band; wherein the second frequency band is a sub-component carrier with respect to the first frequency band, and in (b) and (c), the communication method is comprised starting to send the information, the information being carried by the first transmission signal, after the mobile station device establishes connection in the cell via a cell search using the synchronization signal in the first transmission signal. - View Dependent Claims (14)
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15. A communication method for use in a mobile station device configured to perform communication with a base station device by carrier aggregation using a first cell and a second cell, the communication method comprising:
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(a) receiving a first reception signal via a first frequency band and a second reception signal via a second frequency band different from the first frequency band, wherein the first reception signal includes a synchronization signal, a first physical channel and a first reference signal, wherein the first physical channel and the first reference signal are obtained using a first cell identity, the second reception signal includes a second physical channel and a second reference signal, wherein the second physical channel and the second reference signal are obtained using a second cell identity, and (b) acquiring information indicating the second cell identity, the information being carried by the first reception signal; (c) extracting, after the mobile station device establishes connection in the cell via a cell search using the synchronization signal in the first reception signal, the information from the first reception signal; and the second frequency band is a sub-component carrier with respect to the first frequency band. - View Dependent Claims (16)
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Specification