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公开(公告)号：US10271238B2
公开(公告)日：2019-04-23
申请号：US14383104
申请日：2013-03-04
IPC: H04W28/02 , H04W72/08 , H04W72/02 , H04W76/00 , H04L12/851 , H04L29/08 , H04W88/02 , H04W88/08 , H04W80/04
Abstract: A method and device for transmitting Internet Protocol (IP) data packet are disclosed by the present invention, the method comprising: an Access Point (AP) device obtains an IP data packet needing to be sent to an User Equipment (UE); said AP device use the type information of said IP data packet to determine the corresponding Data Radio Bearer (DBR) of said IP data packet; Said AP device sends said IP data packet to said UE through said DBR; in the embodiments of the present invention, when the AP device accesses the IP network locally or directly through the IP network, the Quality of Service (QoS) insurance of IP data packet in the air interface transmission is implemented, on the basis of the direct mapping between the type information and the data radio bearer.
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152.发明申请公开(公告)号：US20190116075A1
公开(公告)日：2019-04-18
申请号：US16090180
申请日：2017-03-31
Inventor： Hui LI , Giutoin GAO , Runhus CHEN , Wen hong CHEN , Rakesh TAMRAKAR
Abstract: The present disclosure provides a pilot mapping method, a pilot signal transmission method and apparatus, a base station and a terminal. In each PRB of one PRB group, the positions at which a pilot of each antenna port is mapped to resource elements (RE) in the PRB is determined according to an antenna port index and an index of the PRB in the PRB group or the whole system bandwidth, so that support is provided for implementation of power borrowing, so as to make full use of transmit power of a base station end, improve the coverage range of the pilot signal and channel estimation quality of a reception end.
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公开(公告)号：US10237883B2
公开(公告)日：2019-03-19
申请号：US14761261
申请日：2014-01-20
Inventor： Hao Ni , Quibin Gao
Abstract: The embodiments of the present application relate to the technical field of wireless communications, and in particular, to a method, system and device for scheduling a resource, which are used for solving the problems that the realization of non-central coordinated scheduling using an iterative method needs to perform iterative scheduling information interaction, and scheduling time delay will obviously increase in the case of a relatively large X2 interface time delay in the prior art. The method of the embodiments of the present application comprises: a serving base station determining a time-frequency resource needing to be silenced by a cooperative base station according to channel information reported by a user equipment adopting coordinated multi-point (CoMP) transmission technology, and notifying the cooperative base station of the time-frequency resource needing to be silenced; and scheduling the user equipment according to a received notification about whether to silence the resource from the cooperative base station. The adoption of the solution of the embodiments of the present invention reduces the scheduling time delay in the case of a relatively large X2 interface time delay, and improves the efficiency of information scheduling and the system performance.
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公开(公告)号：US20190074884A1
公开(公告)日：2019-03-07
申请号：US16084218
申请日：2017-02-24
Inventor： Wenhong CHEN , Qiubin GAO , Hui LI , Runhua CHEN , Tamrakar RAKESH
IPC: H04B7/06 , H04W72/04 , H04B7/0456
CPC classification number: H04B7/0626 , H04B7/0456 , H04B7/0478 , H04B7/0486 , H04B7/0632 , H04B7/0639 , H04W72/04
Abstract: Disclosed are a channel state information (CSI) feedback method, a precoding method, and an apparatus. In the present invention, a terminal obtains, according to the number of downlink transport layers, a first precoding matrix set that is located on a first subband and that is corresponding to the number of the downlink transport layers, the first precoding matrix set comprising one or more precoding matrices, and a physical resource in the first subband being corresponding to a precoding matrix in the first precoding matrix set; the terminal determines a channel quality indicator (CQI) on a second subband according to downlink channel information and the first precoding matrix set on the first subband; and the terminal feeds back the CSI, the CSI comprising one or more of the following information: an RI used for indicating the number of the downlink transport layers, a PMI used for indicating the first precoding matrix set on the first subband and the CQI on the second subband. The technical solution disclosed in the resent invention can reduce signaling overheads of feeding back CSI by a terminal.
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公开(公告)号：US20190069320A1
公开(公告)日：2019-02-28
申请号：US16072809
申请日：2017-01-12
Inventor： Xuejuan GAO , Fangchen CHENG , Xueming PAN
CPC classification number: H04W72/14 , H04W72/042 , H04W72/0446 , H04W72/0453 , H04W72/1284 , H04W92/20
Abstract: An uplink transmission method and an uplink transmission device are provided. The uplink transmission method includes: detecting an UL grant on a target time-domain resource and a target frequency-domain resource in a first time unit, the UL grant being to schedule one or more UEs to perform uplink transmission in a target time unit, a time unit having a predefined length of B1 subframes or B2 symbols, where B1 and B2 are each an integer greater than or equal to 1; acquiring scheduling information for the UE in the target time unit from the UL grant; and performing the uplink transmission on a time-domain resource and a frequency-domain resource scheduled in the target time unit in accordance with the scheduling information.
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Patent Agency Ranking
公开(公告)号：US10205500B2
公开(公告)日：2019-02-12
申请号：US15751460
申请日：2016-08-08
Inventor： Hui Li , Qiubin Gao , Runhua Chen , Wenhong Chen , Rakesh Tamrakar
IPC: H04B7/04 , H04B7/0456 , H04B7/06
Abstract: A precoding matrix determination method and a precoding matrix determination device are provided. The precoding matrix determination method includes: dividing each of the groups of vertical-dimension beams into a plurality of subgroups of vertical-dimension beams, and dividing each of the groups of horizontal-dimension beams into a plurality of subgroups of horizontal-dimension beams; determining a first stage codebook in accordance with a Kronecker product of each subgroup of vertical-dimension beams acquired by dividing each of the groups of vertical-dimension beams and each subgroup of horizontal-dimension beams acquired by dividing each of the groups of horizontal-dimension beams; and selecting a plurality of columns of beams from the determined first stage codebook using a second stage codebook, and performing phase adjustment to determine a precoding matrix.
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公开(公告)号：US20190045531A1
公开(公告)日：2019-02-07
申请号：US16073233
申请日：2017-01-19
Inventor： Lei WANG , Xuejuan GAO , Fang-Chen CHENG , Shaohui SUN
Abstract: Disclosed in the present invention are a method and apparatus for transmitting and detecting downlink control information. The method comprises: determining a state of resource allocation in a downlink transmission time period, the resource allocation comprising allocation of at least one downlink transmission resource region; and transmitting downlink control information on a preset resource in the at least one downlink transmission resource region, the downlink control information being used for scheduling at least one terminal to perform data transmission in the downlink transmission resource region. The method also comprises: detecting the downlink control information on the preset resource in the downlink transmission time period; determining, according to the detected downlink control information, a data transmission region indicated by the downlink control information; and detecting follow-up downlink control information according to the data transmission region. By using the present invention, downlink control information can be transmitted at a fixed position in each downlink transmission time period, and multiple transmission time intervals of different lengths are supported, so that rich service types in the future can be better supported.
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公开(公告)号：US10194472B2
公开(公告)日：2019-01-29
申请号：US15024452
申请日：2014-09-24
IPC: H04W4/08 , H04W76/11 , H04W76/40 , H04L12/18 , H04W4/06 , H04N21/2668 , H04N21/414 , H04N21/6405 , H04W8/00 , H04L29/06 , H04W48/16 , H04W88/02 , H04W92/10
Abstract: Disclosed are a group communication method, device and system. An MBMS network side method comprises: receiving a session start request message sent by a mobility management device of an MBMS network; judging whether the session start request message carries a group identifier of a communication group in which a session requested by the session start request message is located; and if the session start request message carries the group identifier, forwarding the session start request message to an access network device, so that the access network device allocates an air interface identifier to the session requested by the session start request message, thereby conducting group communication. In the embodiments of the present application, a session start message transferred by an MBMS network side carries a group identifier, thus realizing group communication based on an MBMS network.
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公开(公告)号：US10193609B2
公开(公告)日：2019-01-29
申请号：US15771079
申请日：2016-12-29
Inventor： Chuanjun Li , Xin Su , Yang Song
IPC: H04B7/06 , H04B7/0426 , H04L5/00 , H04B7/0456
Abstract: A method for feeding back CIS includes: dividing a plurality of antenna ports into a plurality of groups of antenna ports; configuring for each group a same intra-group codebook set consisting of a plurality of intra-group precoding matrices, allocating for each group a plurality of different reference signals corresponding to a same reference resource, and configuring for each antenna port in each group a precoded reference signal acquired after a precoding operation using the intra-group precoding matrices, the number of the reference resources corresponding to the number of the intra-group precoding matrices in the intra-group codebook set, and the number of the reference signals corresponding to each reference resource corresponding to the number of groups of inter-group antenna ports; transmitting the precoded reference signal to a UE via each antenna port; and receiving the CSI fed back by the UE after measurement on the reference signal.
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公开(公告)号：US10158980B2
公开(公告)日：2018-12-18
申请号：US15105644
申请日：2014-12-24
Inventor： Ying Wang , Jianhua Liu , Yali Zhao
IPC: H04L29/06 , H04W4/08 , H04W56/00 , H04W72/04 , H04W72/12 , H04W72/14 , H04W76/40 , H04W76/25 , H04L12/18 , H04W88/16
Abstract: Disclosed are a method, device and system for maintaining the continuity of a group communication service, for solving the problem in the prior art that the service continuity requirement of group communication may not be satisfied due to the switching of network service from multicast transmission to unicast transmission in an MBSFN domain. The method comprises: when determining that group communication service needs to be switched from multicast transmission to unicast transmission, a GCSE-AS notifies a terminal served by the GCSE-AS that the GCSE-AS is going to switch the group communication service from multicast transmission to unicast transmission; and after receiving a first notification message transmitted by the terminal, the GCSE-AS transmits the group communication service over a unicast carrier established by the terminal for unicast transmission, and stops transmitting the communication service in multicast mode. The terminal has already established a unicast carrier for unicast transmission before the GCSE-AS switches the group communication service from multicast transmission to unicast transmission, thus ensuring the continuity of the group communication service.
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