Methods and nodes to perform precoder candidate restriction for multi-antenna UE
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSven Jacobsson, Andreas Nilsson, Claes Tidestav, Daniele Davoli
Life of this patent
Estimating the term…
Abstract
There is provided method performed by a user equipment (UE) configured with 8 or more transmit antenna ports (NTX). The method comprises: receiving a precoding indication which indicates a precoder in a subset of precoders, where the subset of precoders corresponds to a plurality of precoders associated with NTX/Ng transmit antenna ports, where Ng is a number of transmit antenna port groups; and transmitting a data transmission using the indicated precoder to a network node. A UE to perform this method is also provided.
Claims20
A method performed by a user equipment (UE) configured with 8 transmit antenna ports (NTX), the method comprising:
- receiving a precoding indication which indicates a precoder that is selected from a subset of precoders, the subset of precoders being restricted from a set of precoders, wherein the set of precoders comprises non coherent precoders, partially coherent precoders and fully coherent precoders, and wherein the subset of precoders corresponds to a plurality of precoders associated with NTX/Ng transmit antenna ports, where Ng is a number of transmit antenna port groups;
- and
- transmitting a data transmission using the indicated precoder to a network node.
A method performed by a network node in communication with a user equipment (UE) which is configured with 8 transmit antenna ports (NTX), the method comprising:
- determining a subset of precoders, restricted from a set of precoders, wherein the set of precoders comprises non coherent precoders, partially coherent precoders and fully coherent precoders, and wherein the subset of precoders corresponds to a plurality of precoders associated with NTX/Ng transmit antenna ports, where Ng is a number of transmit antenna port groups;
- transmitting a precoding indication which indicates a precoder selected from the determined subset of precoders;
- and
- receiving, from the UE, a data transmission using the indicated precoder.
A user equipment (UE) configured with 8 transmit antenna ports (NTX) comprising processing circuitry and a network interface connected thereto, the processing circuitry configured to:
- receive a precoding indication which indicates a precoder that is selected from a subset of precoders, the subset of precoders being restricted from a set of precoders, wherein the set of precoders comprises non coherent precoders, partially coherent precoders and fully coherent precoders, and wherein the subset of precoders corresponds to a plurality of precoders associated with NTX/Ng transmit antenna ports, where Ng is a number of transmit antenna port groups;
- and
- transmit a data transmission using the indicated precoder to a network node.
Dependencies are inferred from the claim text.