Method and Arrangement in a Wireless Communications System

摘要

A method for assisting the adaptation of a signal from a first node to a second node is provided. The first node communicates with the second node in a wireless communication system over a radio link. The second node has a codebook comprising a set of possible information alternatives for assisting the adaptation of a signal received from the first node. The second node may select an information alternative from the codebook and send it to the first node to assist the first node in adapting the signal. The first node is configured with a number of subsets, each comprising a part of the possible information alternatives. The first node requests that the second node restrict the selection of information alternatives to one of the subsets, and in response, receives an information alternative from the second node that is selected from among the subsets configured according to the configuration request.

主权项

1. 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:
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.