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

專(zhuān)利號(hào)
US10219296B2
公開(kāi)日期
2019-02-26
申請(qǐng)人
Telefonaktiebolaget LM Ericsson (publ)(SE Stockholm)
發(fā)明人
Gabor Fodor; Muhammad Kazmi
IPC分類(lèi)
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(shuō)明書(shū)

In some embodiments, communicating with the first radio node comprises obtaining, from the first radio node, a set of uplink precoding vectors and receive beamforming parameters expected to be used in the set of time resources in which the wireless device is expected to be scheduled for uplink data transmission on the first carrier frequency. Further, communicating with the second radio node that operates on the second carrier frequency in the unlicensed band to obtain the set of time resources in which the wireless device will not be scheduled for downlink reception on the second carrier frequency is further based on the set of uplink precoding vectors and/or receive beamforming parameters expected to be used in the set of time resources in which the wireless device is expected to be scheduled for uplink data transmission on the first carrier frequency.

In some embodiments, communicating with the second radio node that operates on the second carrier frequency in the unlicensed band to obtain the set of time resources in which the wireless device will not be scheduled for downlink reception on the second carrier frequency comprises (a) sending, to the second radio node, the set of time resources in which the wireless device is expected to be scheduled for uplink data transmission on the first carrier frequency and/or the set of time resources in which the wireless device is expected to receive downlink control transmission on the first carrier frequency and (b) receiving, from the second radio node, the set of time resources in which the wireless device will not be scheduled for downlink reception on the second carrier frequency.

In some embodiments, the method further comprises communicating with the first radio node to agree on a set of time resources in which there will be no uplink transmission from the wireless device on the second carrier frequency.

權(quán)利要求

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