Channel-adaptive transmission in a distributed coordinated multi-point transmission system
First Claim
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1. An apparatus comprising:
- at least a one processor and at least one memory including computer program code,wherein the at least one memory and the computer code are configured to, with the at least one processor, cause the apparatus to at least perform the following;
obtain channel state information for jointly processed data streams of a coordinated multi-point transmission, the channel state information being in a predetermined order, andarrange the channel state information in the predetermined order into a datagram;
determine a life time of the channel state information, and arrange a time stamp indicating the life time of the channel state information into the datagram; and
an interface configured to transmit the datagram to at least one base station of at least two base stations which serve the jointly processed data streams of a coordinated multi-point transmission;
wherein said coordinated multi-point transmission of jointly processed data streams comprises joint precoding of data and simultaneous transmission of the precoded data from the at least two base stations.
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Abstract
A user equipment obtains channel state information for base stations serving the user equipment according to a coordinated multi-point transmission, arranges the channel state information in a predetermined order, and transmits the channel state information in the predetermined order. At least one base station of the base stations receives the channel state information, arranges the channel state information in the predetermined order into a datagram, and transmits the datagram to at least one other base station of the base stations.
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Citations
27 Claims
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1. An apparatus comprising:
- at least a one processor and at least one memory including computer program code,
wherein the at least one memory and the computer code are configured to, with the at least one processor, cause the apparatus to at least perform the following; obtain channel state information for jointly processed data streams of a coordinated multi-point transmission, the channel state information being in a predetermined order, and arrange the channel state information in the predetermined order into a datagram; determine a life time of the channel state information, and arrange a time stamp indicating the life time of the channel state information into the datagram; and an interface configured to transmit the datagram to at least one base station of at least two base stations which serve the jointly processed data streams of a coordinated multi-point transmission; wherein said coordinated multi-point transmission of jointly processed data streams comprises joint precoding of data and simultaneous transmission of the precoded data from the at least two base stations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- at least a one processor and at least one memory including computer program code,
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13. A user equipment comprising:
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at least a one processor and at least one memory including computer program code, wherein the at least one memory and the computer code are configured to, with the at least one processor, cause the apparatus to at least perform the following; obtain channel state information for jointly processed data streams of a coordinated multipoint transmission for base stations serving the user equipment according to a coordinated multi-point transmission, and arrange the channel state information in a predetermined order; determine a life time of the channel state information, and prompt a time stamp indicating the life time of the channel state information; and a transceiver configured to transmit the channel state information in the predetermined order; wherein said coordinated multi-point transmission of jointly processed data streams comprises joint precoding of data and simultaneous transmission of the precoded data from at least two base stations.
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14. A method comprising:
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obtaining channel state information for jointly processed data streams of a coordinated multi-point transmission, the channel state information being in a predetermined order; arranging the channel state information in the predetermined order into a datagram; determining a life time of the channel state information, and arranging a time stamp indicating the life time of the channel state information into the datagram; and transmitting the datagram to at least one base station of at least two base stations which serve the jointly processed data streams of a coordinated multi-point transmission; wherein said coordinated multi-point transmission of jointly processed data streams comprises joint precoding of data and simultaneous transmission of the precoded data from the at least two base stations. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method comprising:
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obtaining channel state information for jointly processed data streams of a coordinated multi-point transmission for base stations serving a user equipment according to a coordinated multipoint transmission; arranging the channel state information in a predetermined order; determining a life time of the channel state information, and prompting a time stamp indicating the life time of the channel state information; and transmitting the channel state information in the predetermined order; wherein said coordinated multi-point transmission of jointly processed data streams comprises joint precoding of data and simultaneous transmission of the precoded data from at least two base stations.
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27. A computer program product, embodied on a non-transitory computer-readable medium including a program for a processing device, comprising software code portions when the program is run on the processing device to perform or control:
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obtaining channel state information for jointly processed data streams of a coordinated multi-point transmission, the channel state information being in a predetermined order; arranging the channel state information in the predetermined order into a datagram; determining a life time of the channel state information, and arranging a time stamp indicating the life time of the channel state information into the datagram; and transmitting the datagram to at least one base station of at least two base stations which serve the jointly processed data streams of a coordinated multi-point transmission; wherein said coordinated multi-point transmission of jointly processed data streams comprises joint precoding of data and simultaneous transmission of the precoded data from the at least two base stations.
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Specification