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公开(公告)号：US20180288802A1
公开(公告)日：2018-10-04
申请号：US15562364
申请日：2016-03-24
Inventor： Weijie XU , Xueming PAN
Abstract: Disclosed are a method and device for preempting transmission resources on unlicensed carriers, so as to implement an improved technical scheme for preempting channel resources on the unlicensed carriers, and thereby achieving a higher spectrum utilization rate. The method for preempting transmission resources on unlicensed carriers provided in the present application comprises: a device determines whether a preset clear channel assessment (CCA) detection time point is reached, said CCA detection time point being reached cyclically, said cycle being shorter than a preset allowed maximum duration of occupation for each signal transmission after the device preempts a channel; the device performs CCA detection when the CCA detection time point is reached.
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公开(公告)号：US20180255534A1
公开(公告)日：2018-09-06
申请号：US15759213
申请日：2016-08-04
Inventor： Jiaqing WANG , Xueming PAN , Weijie XU , Qianqian SI
IPC: H04W72/04
CPC classification number: H04W72/042 , H04L5/0053 , H04W16/14 , H04W72/044 , H04W72/1289 , H04W74/0808
Abstract: Disclosed are a physical downlink control channel transmission method and apparatus, which are used for achieving, in the case where an initial signal or signalling which indicates an initial position of a physical downlink shared channel is not transmitted, a method in which a physical downlink control channel is used for transmitting and indicating an initial position of a physical downlink shared channel. The method comprises: a terminal determining, according to each candidate time position in a set of candidate time positions and a set of candidate physical downlink control channel/enhanced physical downlink control channel resource positions corresponding to the candidate time position respectively, a physical downlink control channel/enhanced physical downlink control channel bearing downlink control information in an unauthorized frequency band wireless frame; and the terminal receiving the downlink control information by means of the determined physical downlink control channel/enhanced physical downlink control channel.
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公开(公告)号：US20180220464A1
公开(公告)日：2018-08-02
申请号：US15749056
申请日：2016-07-18
Inventor： Jiaqing WANG , Xueming PAN , Weijie XU
Abstract: The present invention discloses a data transmission method and device configured to address the problems in LTE-U employing the existing channel access mechanism, in which poor channel access capacity is caused, and congestion between UEs in the same cell is likely to occur if multiple UEs cannot access at the same time. The method comprises: sending, by a communication device, a signal during a GP between a downlink subframe and an uplink subframe to occupy a current channel; and transmitting, by the communication device, data via the current channel. The solution provided in embodiments of the present invention has low implementation complexity, and can address the problem of UL having a poorer opportunity to access than WIFI, thus facilitating the implementation of MU-FDM and MU-SDM to prevent significant degradation of LAA performance and a waste of radio resources.
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Patent Agency Ranking
公开(公告)号：US20170339719A1
公开(公告)日：2017-11-23
申请号：US15524256
申请日：2015-10-27
Inventor： Weijie XU , Xueming PAN , Zukang SHEN
CPC classification number: H04W74/0808 , H04W16/14 , H04W72/0446 , H04W74/08
Abstract: The present disclosure provides a channel monitoring method and a channel monitoring device, to achieve the channel resource contention for an LTE system in the case that it operates on an unlicensed carrier. The channel monitoring method includes steps of: determining, by a device, a starting time point of CCA detection for monitoring a channel before data transmission and a required duration within which a CCA detection result indicates that the channel is clear; and monitoring, by the device, the channel on an unlicensed frequency band in accordance with the starting time point and the required duration.
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公开(公告)号：US20170332388A1
公开(公告)日：2017-11-16
申请号：US15522868
申请日：2015-10-14
Inventor： Weijie XU , Xueming PAN
CPC classification number: H04W72/12 , H04W72/042 , H04W72/0453 , H04W76/27 , H04W88/02 , H04W88/08
Abstract: The present disclosure provides a data channel scheduling method, a data channel scheduling device and a data channel scheduling system. The data channel scheduling method includes steps of: configuring for a UE a set of serving cells; configuring for the UE a first serving cell and a second serving cell corresponding to each serving cell in the set of serving cells; transmitting a first PDCCH to the UE on the first serving cell corresponding to a third serving cell for scheduling the third serving cell to perform downlink data transmission with the UE; and transmitting a second PDCCH on the second serving cell corresponding to the third serving cell to the UE for scheduling the third serving cell to perform the uplink data transmission with the UE. The third serving cell is a serving cell in the set of serving cells. According to the present disclosure, the first serving cell for transmitting downlink scheduling information and the second serving cell for transmitting uplink scheduling information are configured separately for the serving cells for the data channel scheduling, so as to meet the requirements in the case that a carrier of an unlicensed frequency band is applied to CA.
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公开(公告)号：US20170303246A1
公开(公告)日：2017-10-19
申请号：US15509695
申请日：2015-08-20
Inventor： Jiaqing WANG , Xueming PAN , Weijie XU
CPC classification number: H04W72/042 , H04L5/0007 , H04L5/0044 , H04L5/0091 , H04L5/0092 , H04W16/14
Abstract: The present disclosure relates to the field of mobile communications technology. A Method and a device for transmitting data in an unauthorized frequency band are provided. The method includes: determining a starting position of to-be-transmitted data in a radio frame in the unauthorized frequency band; determining position indication information based on the starting position; and transmitting the position indication information, to enable a terminal to obtain the starting position of the to-be-transmitted data in the radio frame in the unauthorized frequency band based on the position indication information.
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7.发明申请公开(公告)号：US20170188294A1
公开(公告)日：2017-06-29
申请号：US15327622
申请日：2015-07-30
Inventor： Weijie XU , Xueming PAN , Zukang SHEN
CPC classification number: H04W48/16 , H04W24/08 , H04W72/04 , H04W72/042
Abstract: The method of transmitting a discovery signal according to an embodiment of the present disclosure includes: determining whether a channel in an unlicensed frequency band is idle; transmitting the discovery signal in the channel in the unlicensed frequency band during a current cycle of a discovery signal transmission period if the channel in the unlicensed frequency band is determined to be idle; and not transmitting the discovery signal in the channel in the unlicensed frequency band during the current cycle if the channel in the unlicensed frequency band is determined to be not idle.
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公开(公告)号：US20180191526A1
公开(公告)日：2018-07-05
申请号：US15505602
申请日：2015-07-09
Inventor： Weijie XU
CPC classification number: H04L25/0224 , H04B7/0626 , H04L5/005 , H04L5/14 , H04L5/1469 , H04W48/16 , H04W72/04
Abstract: The present disclosure relates to the field of radio communication technology, and provides a method, a device and a system for transmitting a CSI-RS, so as to solve the problem in the related art where a small amount of resources are configured to the CSI-RS. A network side device selects a RE corresponding to a CSI-RS pilot resource configuration from pilot resource mapping patterns of the CSI-RS within the special subframe, as a RE for carrying the CSI-RS, and transmit the CSI-RS through the selected RE.
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