公开(公告)号：US20170223729A1

公开(公告)日：2017-08-03

申请号：US15309646

申请日：2015-05-07

Applicant: China Academy of Telecommunications Technology

Inventor： Rui ZHAO ,  Qiubin GAO ,  Wenhong CHEN ,  Ying PENG

IPC: H04W74/00 ,  H04W76/02 ,  H04W74/08

CPC classification number: H04W74/002 ,  H04W74/0816 ,  H04W76/14 ,  H04W84/042

Abstract: Disclosed are a D2D communication method and device. The method comprises: sending a. preamble on a sub-channel set of a competition region, and monitoring the preamble on the sub-channel set of the competition region; and if the preamble is not monitored on the sub-channel set of the competition region, sending data on a sub-channel set of a data region corresponding to the sub-channel set of the competition region, different sub-channel sets of the competition region corresponding to different sub-channel sets of the data region. The technical solution provided in the embodiments of the present invention can effectively avoid the resource conflict of a D2D UE. In addition, since a preamble occupies fewer resources, competing for sub-channel resources of a data region by sending a preamble could effectively reduce the overhead of resource competition.

公开(公告)号：US20160269082A1

公开(公告)日：2016-09-15

申请号：US15156397

申请日：2016-05-17

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Qiubin GAO ,  Ranran ZHANG ,  Wenhong CHEN ,  Ying PENG ,  Hui LI

IPC: H04B7/02 ,  H04L12/24 ,  H04L5/00 ,  H04W24/10 ,  H04B7/06

CPC classification number: H04B7/024 ,  H04B7/0417 ,  H04B7/0621 ,  H04B7/0626 ,  H04L1/0026 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0057 ,  H04L41/0806 ,  H04W24/08 ,  H04W24/10 ,  H04W72/02 ,  H04W72/0413 ,  H04W72/06

Abstract: An information transmission method and equipment based on CoMP transmission are described. A user equipment determines a main transmission point. The user equipment determines RANK information of the main transmission point as well as channel state information corresponding to the RANK information. The user equipment sends the RANK information of the main transmission point and the channel state information to a network side equipment. The UE reports channel state information of limited RANK of every transmission point, channel state information of unlimited RANK of the main transmission point, and relative phase information between the transmission points, etc., to the network side equipment.

Abstract translation: 描述了基于CoMP传输的信息传输方法和设备。 用户设备确定主要传输点。 用户设备确定主传输点的RANK信息以及对应于RANK信息的信道状态信息。 用户设备向网络侧设备发送主要传输点的RANK信息和信道状态信息。 UE向网络侧设备报告每个传输点的有限RANK的信道状态信息，主传输点的无限RANK的信道状态信息和传输点之间的相对相位信息等。

公开(公告)号：US20160072712A1

公开(公告)日：2016-03-10

申请号：US14786440

申请日：2014-04-22

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Qiubin GAO ,  Wenhong CHEN ,  Rui ZHAO ,  Ying PENG

IPC: H04L12/801 ,  H04L5/00 ,  H04L5/14

CPC classification number: H04L47/12 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0062 ,  H04L5/0089 ,  H04L5/14 ,  H04L25/0226 ,  H04L27/2613

Abstract: Disclosed are a method and device for transmitting a pilot signal. The method therefor comprises: conducting OFDM modulation on a pilot signal; and sending the modulated pilot signal on the first and/or the last OFDM symbol of a subframe which transmits the pilot signal. In the technical solution provided in the embodiments of the present application, the pilot signal is transmitted on the first and/or the last OFDM symbol of the subframe, thereby not occupying an OFDM symbol for transmitting a data signal, so as to reduce the resource overhead of the pilot signal.

Abstract translation: 公开了一种用于发送导频信号的方法和装置。 其方法包括：对导频信号进行OFDM调制; 以及在发送导频信号的子帧的第一和/或最后的OFDM符号上发送调制的导频信号。 在本申请的实施例提供的技术方案中，在子帧的第一和/或最后的OFDM符号上发送导频信号，从而不占用用于发送数据信号的OFDM符号，以便减少资源 导频信号的开销。

公开(公告)号：US20160029429A1

公开(公告)日：2016-01-28

申请号：US14773383

申请日：2014-03-17

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Ying PENG ,  Qiubin GAO ,  Wenhong CHEN ,  Rui ZHAO

IPC: H04W76/04 ,  H04W36/26 ,  H04W24/10 ,  H04W24/02

CPC classification number: H04W76/043 ,  H04W24/02 ,  H04W24/10 ,  H04W36/00 ,  H04W36/26 ,  H04W76/23 ,  H04W84/12 ,  H04W88/06

Abstract: Embodiments of the present application relate to the technical field of wireless communication, in particular a D2D switchover method, system, and device, for solving the problem in prior art of the lack of mechanism for D2D switchover for D2D user devices under appropriate conditions so as to ensure the short-distance transmission quality in the situation where an LTE system has too high a load and interference is too strong. Embodiments of the present invention comprise: a network device determines, according to resource management information and/or channel status information whether a D2D user device needs to perform a D2D switchover; when the D2D user device is determined to need to perform a D2D switchover, the D2D user device is triggered to switch to a heterogeneous system and conduct end-to-end communication, or to conduct end-to-end communication via the network device, or to conduct in the current system end-to-end communication not controlled by the network device. The method in the embodiments of the present invention ensures that D2D devices can perform D2D switchover under appropriate conditions even when an LED system has too high a load and interference is too strong, thereby enhancing the end-to-end communication performance.

Abstract translation: 本申请的实施例涉及无线通信的技术领域，特别是D2D切换方法，系统和设备，用于解决现有技术中在适当条件下D2D用户设备缺乏D2D切换机制的问题，以便 在LTE系统负载过大，干扰过强的情况下，确保短距离传输质量。 本发明的实施例包括：网络设备根据资源管理信息和/或信道状态信息确定D2D用户设备是否需要执行D2D切换; 当D2D用户设备确定需要进行D2D切换时，D2D用户设备被触发切换到异构系统并进行端到端通信，或通过网络设备进行端到端通信， 或者在当前系统中进行端到端通信，而不是由网络设备控制的。 本发明实施例中的方法，即使在LED系统的负载过高，干扰过强的情况下，D2D设备也可以在适当的条件下进行D2D切换，从而提高端对端的通信性能。