Mechanisms to operate downlink wideband carrier in unlicensed band
a wideband carrier and wideband technology, applied in the field of new radio/, can solve the problems of excessive operation, bringing additional implementation burdens, and interference from devices using the subband to the adjacent lbt bw,
Pending Publication Date: 2021-01-21
INTEL CORP
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Benefits of technology
The patent text discusses new radio (NR) / fifth generation (5G) systems and the use of unlicensed band for communication. The technical effects of the patent include the development of a unified framework for different types of devices and services, as well as the use of wideband operation for downlink NR-U. The text also describes various embodiments and illustrates the architecture of a network, as well as the use of different radio communication technologies and standards. The patent aims to provide solutions for the increasing number of UEs and applications using NR systems.
Problems solved by technology
Also, if one or more LBT BW fail the CCA inside the BWP, interference from the device using the subband may bleed into the adjacent LBT BW.
It may thus be desirable to explicitly indicate the gNB's transmitted LBT BWs to the UEs since blind detection of available LBT BWs may not be sufficiently reliable and can lead to excessive operation when errors occur.
Furthermore, the UE blind detection itself may bring additional implementation burdens.
In another embodiment, reformatting of the PDSCH based on the LBT outcomes may be problematic.
Method used
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[0013]The following description and the drawings sufficiently illustrate specific embodiments to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. Portions and features of some embodiments may be included in, or substituted for, those of other embodiments. Embodiments set forth in the claims encompass all available equivalents of those claims.
[0014]FIG. 1A illustrates an architecture of a network in accordance with some aspects. The network 140A includes 3GPP LTE / 4G and NG network functions. A network function can be implemented as a discrete network element on a dedicated hardware, as a software instance running on dedicated hardware, and / or as a virtualized function instantiated on an appropriate platform. e.g., dedicated hardware or a cloud infrastructure.
[0015]The network 140A is shown to include user equipment (UE) 101 and UE 102. The UEs 101 and 102 are illustrated as smartphones (e....
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Systems and methods for downlink transmission using a wideband unlicensed band carrier in 5G networks are described. The gNB determines, based on LBT, which LBT subchannel(s) in a BWP are available during a COT. The gNB transmits an indication of the available subchannels in DCI format 2_0 of a GC-PDCCH of one of the available subchannels and subsequently transmits a PDSCH using the available subchannel(s). The gNB may configure multiple opportunities during the COT and transmit the GC-PDCCH after the initial opportunity. The PDSCH is transmitted on all available subchannels during the COT and, during an initial portion of the COT, may transmit the PDSCH by puncturing symbols of the unavailable subchannels. The indication may include a bitmap of available subchannels or if the LBT outcome is not available, may indicate all or none of the subchannels or available or that the outcome is not available.
Description
PRIORITY CLAIM[0001]This application claims the benefit of priority under 35 USC 119(e) to U.S. Provisional Patent Application Ser. No. 62 / 911,908, filed Oct. 7, 2019, which is incorporated herein by reference in its entirety.TECHNICAL FIELD[0002]Embodiments pertain to new radio (NR) / fifth generation (5G) systems. Some embodiments relate to unlicensed band (NR-U) use in NR systems. Some embodiments relate to downlink NR-U operation and, in particular, wideband NR-U operation.BACKGROUND[0003]The use of various types of communication systems such as 3GPP networks, has increased due to both an increase in the types of devices user equipment (UEs) using network resources as well as the amount of data and bandwidth being used by various applications, such as video streaming, operating on these UEs. The next generation wireless communication system will provide ubiquitous connectivity and access to information, as well as ability to share data, by various users and applications. NR system...
Claims
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Login to View More IPC IPC(8): H04W74/08H04W16/14H04W72/04H04W76/27
CPCH04W74/0808H04W16/14H04W76/27H04W72/0493H04W72/042H04W72/0453H04L5/001H04L5/0053H04L27/0006H04L5/0005H04W72/23H04W72/53
Inventor KWAK, YONGJUNKUNDU, LOPAMUDRATAIARICO, SALVATORELI, YINGYANG
Owner INTEL CORP