Method and Arrangement in a Wireless Communications System
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Abstract
A method for assisting the adaptation of a signal from a first node (100) to a second node (120) is provided. The first node communicates with the second node in a wireless communication system (110) over a radio link (130). The second node is configured to comprise a codebook, which codebook comprises a set of possible information alternatives used for assisting the adaptation of a signal from the first node to the second node. The second node may select an information alternative from a codebook and send it to the first node to assist the first node how to adapt the signal. The first node is arranged to know a number of subsets, each subset comprising a part of possible information alternatives. The method comprises the steps of sending a configuration request to the second node to restrict the selection of information alternatives to one of the subsets; receiving an information alternative from the second node, which is selected among the at least one subsets configured according to the configuration request.
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Citations
52 Claims
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1-24. -24. (canceled)
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25. A method in a first node for assisting the adaptation of a signal to be sent over a radio link from the first node to a second node in a wireless communication system, wherein the second node is configured to use a codebook comprising a set of possible information alternatives for use by the first node in adapting the signal to be sent over the radio link from the first node to the second node, and the first node is configured to know a number of subsets, each subset comprising at least a part of the codebook, said method comprising:
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sending a message to the second node comprising a configuration request to the second node to restrict the selection of information alternatives to at least one of the subsets; and receiving an information alternative from the second node, which information alternative is selected from among the at least one subsets configured according to the configuration request. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method in a second node for assisting a first node in the adaptation of a signal to be sent over a radio link from the first node to the second node in a wireless communication system, wherein the second node is configured to use a codebook comprising a set of possible information alternatives for use by the first node in adapting the signal to be sent over the radio link from the first node to the second node, and the first node is configured to know a number of subsets, each subset comprising at least a part of the codebook, said method comprising:
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receiving a message from the first node comprising a configuration request to restrict the selection of information alternatives to at least one of the subsets; selecting an information alternative from among the at least one subsets indicated by the configuration request; and sending the selected information alternative to the first node. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
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45. An arrangement in a first node in a wireless communication system that is configured to communicate over a radio link with a second node in the wireless communication system, wherein the second node is configured to use a codebook comprising a set of possible information alternatives for use by the first node in adapting a signal to be sent from the first node to the second node over the radio link, and the first node is configured to know a number of subsets, each subset comprising a part or all of the codebook, said arrangement comprising:
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a sending unit arranged to send a message to the second node, the message comprising a configuration request to the second node to restrict selection of information alternatives by the second node to at least one of the subsets; and a receiving unit arranged to receive an information alternative from the second node that was selected by the second node from among the at least one of the subsets, as indicated by the configuration request. - View Dependent Claims (46, 47, 48)
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49. Arrangement in a second node in a wireless communication system, the second node configured to communicate with a first node in the wireless communication system over a radio link, and wherein the second node uses a codebook comprising a set of possible information alternatives for use by the first node in adapting a signal to be sent from the first node to the second node over the radio link, and wherein the first node is configured to know a number of subsets, each subset comprising at least a part of the codebook, and said arrangement comprising:
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a receiving unit arranged to receive a message from the first node, the message comprising a configuration request to restrict the selection of information alternatives to at least one of the subsets; a configuration unit arranged to configure selection of an information alternative by the second node according to the received configuration request; a selection unit arranged to select an information alternative among the configured at least one subsets; and a sending unit arranged to send the selected information alternative to the first node. - View Dependent Claims (50, 51, 52)
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Specification