Clustering method and communication device for coordinated multipoint transmission
First Claim
1. A method of clustering a coordinated multipoint transmission of a serving base station, the method comprising:
- emptying a resource element of the serving base station that corresponds to a signal transmitted from a neighbor base station to a mobile station, before the mobile station computes expected channel quality information of the signal transmitted from the neighbor base station to the mobile station;
receiving, from the mobile station, channel quality information of a signal transmitted from the serving base station to the mobile station, and the expected channel quality information;
comparing the channel quality information with the expected channel quality information; and
determining whether the neighbor base station is eligible to perform the coordinated multipoint transmission with the serving base station based on a result of the comparing.
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Abstract
A communication system performing a coordinated multipoint transmission is provided. A mobile station may measure expected channel quality information when an interference of a serving base station does not exist. The serving base station may determine whether a neighbor base station and the serving base station are eligible to perform the coordinated multipoint transmission. The serving base station may determine whether the neighbor base station and the serving base station are eligible to perform the coordinated multipoint transmission using a criterion associated with an evaluation of an increase in a transmission rate of the mobile station.
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Citations
22 Claims
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1. A method of clustering a coordinated multipoint transmission of a serving base station, the method comprising:
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emptying a resource element of the serving base station that corresponds to a signal transmitted from a neighbor base station to a mobile station, before the mobile station computes expected channel quality information of the signal transmitted from the neighbor base station to the mobile station; receiving, from the mobile station, channel quality information of a signal transmitted from the serving base station to the mobile station, and the expected channel quality information; comparing the channel quality information with the expected channel quality information; and determining whether the neighbor base station is eligible to perform the coordinated multipoint transmission with the serving base station based on a result of the comparing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of clustering a coordinated multipoint transmission of a serving base station, the method comprising:
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emptying a resource element of the serving base station that corresponds to a signal transmitted from a neighbor base station to a mobile station, before the mobile station computes expected channel quality information of the signal transmitted from the neighbor base station to the mobile station; obtaining, from the mobile station, channel quality information of a signal transmitted from the serving base station to the mobile station, and the expected channel quality information; comparing the channel quality information with the expected channel quality information; checking whether a first criterion, associated with an evaluation of an increase in a transmission rate according to the coordinated multipoint transmission of the neighbor base station and the serving base station, or a second criterion, associated with an evaluation of an increase in a transmission rate according to a change from a current mode of the coordinated multipoint transmission to a particular mode, is satisfied based on a result of the comparing; and determining whether the neighbor base station is eligible to perform the coordinated multipoint transmission with the serving base station, or whether the neighbor base station is eligible to perform the coordinated multipoint transmission in the particular mode, based on a result of the checking. - View Dependent Claims (14)
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15. An operation method of a mobile station for a coordinated multipoint transmission, the method comprising:
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computing expected channel quality information of a signal transmitted from a neighbor base station to the mobile station, in response to a serving base station emptying a resource element of the serving base station that corresponds to the signal transmitted from the neighbor base station to the mobile station; and reporting, to the serving base station, channel quality information of a signal transmitted from the serving base station to the mobile station, and the expected channel quality information, to enable the serving base station to compare the channel quality information with the expected channel quality information, and determine whether the neighbor base station and the serving base station perform the coordinated multipoint transmission based on a result of the comparison. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An operation method of a mobile station for a coordinated multipoint transmission, the method comprising:
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computing expected channel quality information of a signal transmitted from a neighbor base station to the mobile station, in response to an interference of a serving base station with respect to the neighbor base station being non-existent in substance or removed; and reporting, to the serving base station, channel quality information of a signal transmitted from the serving base station to the mobile station, and the expected channel quality information using a predetermined feedback control channel, to enable the serving base station to compare the channel quality information with the expected channel quality information, and determine whether the neighbor base station and the serving base station perform the coordinated multipoint transmission based on a result of the comparison, wherein the serving base station assigns a radio resource used to report the expected channel quality information using the predetermined feedback control channel.
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22. A non-transitory computer-readable storage medium storing a program to implement a method of clustering a coordinated multipoint transmission of a serving base station, the method comprising:
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emptying a resource element of the serving base station that corresponds to a signal transmitted from a neighbor base station to a mobile station, before the mobile station computes expected channel quality information of the signal transmitted from the neighbor base station to the mobile station; receiving, from the station, channel quality information of a signal transmitted from the serving base station to the mobile station, and the expected channel quality information; comparing the channel quality information with the expected channel quality information; and determining whether the neighbor base station is eligible to perform the coordinated multipoint transmission with the serving base station based on a result of the comparing.
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Specification