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Decoupled downlink reception and uplink reception in a mixed licensed carrier and unlicensed carrier wireless communication system

專利號
US10219296B2
公開日期
2019-02-26
申請人
Telefonaktiebolaget LM Ericsson (publ)（SE Stockholm）
發(fā)明人
Gabor Fodor; Muhammad Kazmi
IPC分類
H04W72/14; H04W16/14; H04W72/12; H04W84/04
技術(shù)領(lǐng)域
uplink,wireless,lpn,downlink,hpn,carrier,device,resources,in,f2
地域： Stockholm

摘要

Systems and methods related to Downlink-Uplink Decoupling (DUDe) in mixed licensed and unlicensed carrier wireless system are disclosed. In some embodiments, a method of operating a wireless device comprises communicating with a first radio node that operates on a licensed carrier to obtain a set of time resources in which the wireless device is expected to be scheduled for uplink data transmission on the licensed carrier and/or a set of time resources in which the wireless device is expected to receive downlink control transmission on the licensed carrier. The method further comprises communicating with a second radio node that operates on an unlicensed carrier to obtain, based on the set(s) of time resources for the licensed carrier, a set of time resources in which the wireless device will not be scheduled for downlink reception on the unlicensed carrier and receiving a downlink transmission from the second radio node accordingly.

說明書

  • The wireless device 14-2 can simultaneously beamform and transmit on the licensed carrier (F1) and the unlicensed carrier (F2) but with restricted beams (in terms of how narrow these beams are, that is with restrictions on what precoding weights are applied) and restricted transport format and/or low data rate. This is referred to herein as Constraint C3.
    In some embodiments, the additional constraints and assumptions apply:
  • The wireless device 14-2 autonomously decides when to transmit on the unlicensed carrier (F2), depending on when the wireless device 14-2 receives downlink data from the serving LPN 12-2. This is referred to herein as Assumption A1.
  • The wireless device 14-2 must transmit in granted (i.e., scheduled) time slots and frequency resources on the licensed carrier (F1) uplink to its serving HPN 12-1.

    • 權(quán)利要求

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