Wireless communication system, base station and wireless terminal for performing a coordinated uplink transmission
First Claim
1. A wireless communication system, comprising:
- a base station; and
a plurality of wireless terminals,the base station including;
a controller configured to execute a process including grouping the plurality of wireless terminals into one or more groups using at least one of phases of signals and location information of each wireless terminal received from the plurality of wireless terminals, andallocating, to wireless terminals belonging to each group, resources to perform coordinated multi-point transmission by the wireless terminals in each group based on reception power of a synchronization signal received from the wireless terminals of each group; and
a transmitter configured to transmit an identifier of each group and an allocation result of the resources to each wireless terminal,each of the plurality of wireless terminals including;
an RF processor configured to transmit a signal including the location information and the synchronization signal and to receive the allocation result of the resources; and
a baseband processor configured to execute a process of sharing, in the group, data to be transmitted to the base station by the coordinated multi-point transmission using the allocated resources.
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Accused Products
Abstract
A base station includes a controller to execute a process including grouping a plurality of wireless terminals into one or more groups using at least one of phases of signals and location information of each wireless terminal received from the plurality of wireless terminals, and allocating, to wireless terminals belonging to each group, resources to perform coordinated multi-point transmission by the wireless terminals in each group, a transmitter to transmit an identifier of each group and an allocation result of the resources to each wireless terminal, and a receiver to receive data transmitted from the wireless terminals of each group by the coordinated multi-point transmission.
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Citations
10 Claims
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1. A wireless communication system, comprising:
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a base station; and a plurality of wireless terminals, the base station including; a controller configured to execute a process including grouping the plurality of wireless terminals into one or more groups using at least one of phases of signals and location information of each wireless terminal received from the plurality of wireless terminals, and allocating, to wireless terminals belonging to each group, resources to perform coordinated multi-point transmission by the wireless terminals in each group based on reception power of a synchronization signal received from the wireless terminals of each group; and a transmitter configured to transmit an identifier of each group and an allocation result of the resources to each wireless terminal, each of the plurality of wireless terminals including; an RF processor configured to transmit a signal including the location information and the synchronization signal and to receive the allocation result of the resources; and a baseband processor configured to execute a process of sharing, in the group, data to be transmitted to the base station by the coordinated multi-point transmission using the allocated resources. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A base station, comprising:
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a controller configured to execute a process including grouping a plurality of wireless terminals into one or more groups using at least one of phases of signals and location information of each wireless terminal received from the plurality of wireless terminals, and allocating, to wireless terminals belonging to each group, resources to perform coordinated multi-point transmission by the wireless terminals in each group based on reception power of a synchronization signal received from the wireless terminals of each group; a transmitter configured to transmit an identifier of each group and an allocation result of the resources to each wireless terminal; and a receiver configured to receive data, shared in each group, transmitted from the wireless terminals of each group by the coordinated multi-point transmission.
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8. A wireless terminal, comprising:
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a transmitter configured to transmit a signal including location information to a base station; a receiver configured to receive, from the base station, an identifier of a group to perform coordinated multi-point transmission, the wireless terminal belonging to the group with one or more other wireless terminals; the transmitter further configured to transmit a synchronization signal to the base station along with one or more other wireless terminals; baseband processor configured to execute a process including sharing, in the group, data to be transmitted to the base station with the coordinated multi-point transmission performed by the wireless terminals belonging to the group, the coordinated multi-point transmission being performed using resources allocated by the base station, the resources being allocated based on reception power of the synchronization signal received by the base station.
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9. A control method of coordinated multi-point transmission performed by wireless terminals, the method comprising:
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grouping, using a base station, a plurality of wireless terminals into one or more groups using at least one of phases of signals and location information of each wireless terminal received from the plurality of wireless terminals; allocating, using the base station, to wireless terminals belonging to each group, resources to perform coordinated multi-point transmission by the wireless terminals in each group based on reception power of a synchronization signal received from the wireless terminals of each group; transmitting, using the base station, an identifier of each group and an allocation result of the resources to the plurality of wireless terminals; and receiving data, shared in each group, transmitted from the wireless terminals of each group by the coordinated multi-point transmission.
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10. A control method of coordinated multi-point transmission performed by wireless terminals belonging to a group, the method comprising:
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transmitting, using a wireless terminal included in the wireless terminals, a signal including location information to a base station; receiving, using the wireless terminal, an identifier of the group from the base station; transmitting, using the wireless terminal, a synchronization signal to the base station along with other wireless terminals belonging to the group; and executing, using the wireless terminal, a process of sharing, in the group, data to be transmitted to the base station by the coordinated multi-point transmission using resources allocated by the base station, the resources being allocated based on reception power of the synchronization signal in the base station.
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Specification