公开(公告)号：US20150156776A1

公开(公告)日：2015-06-04

申请号：US14412720

申请日：2013-06-10

Applicant: Alcatel Lucent

Inventor： Yu Chen ,  Sigen Ye

IPC: H04W72/04 ,  H04W4/00

CPC classification number: H04W72/0453 ,  H04W4/70 ,  H04W28/26 ,  H04W72/02

Abstract: The present invention relates to a method, in a base station of a MTC based communication system, of configuring bandwidth for a MTC user equipment, wherein bandwidth of the MTC user equipment is smaller than system bandwidth for MTC, the method comprising the steps of: receiving a first message from the MTC user equipment, the first message indicating an offset of bandwidth selected by the MTC user equipment according to a predetermined selection policy relative to the system bandwidth, wherein the selected bandwidth covers center frequency band of the system bandwidth; determining the bandwidth selected by the MTC user equipment according to the first message. According to the invention, the system bandwidth for MTC and the bandwidth of the MTC user equipments can be asymmetrically increased, while extending the capacity of MTC by allocating wider bandwidth. The cost for the user equipments in a MTC based communication system could be saved by reserving the bandwidth of the MTC user equipments or by reducing the increment of the bandwidth of the MTC user equipments while increasing the system bandwidth for MTC.

Abstract translation: 本发明涉及一种在基于MTC的通信系统的基站中为MTC用户设备配置带宽的方法，其中所述MTC用户设备的带宽小于MTC的系统带宽，所述方法包括以下步骤： 从所述MTC用户设备接收到第一消息，所述第一消息指示所述MTC用户设备根据相对于系统带宽的预定选择策略选择的带宽的偏移，其中所选择的带宽覆盖所述系统带宽的中心频带; 根据第一消息确定MTC用户设备选择的带宽。 根据本发明，通过分配更宽的带宽来扩展MTC的容量，可以不对称地增加用于MTC的系统带宽和MTC用户设备的带宽。 可以通过保留MTC用户设备的带宽或通过减少MTC用户设备的带宽的增加同时增加MTC的系统带宽来节省用于MTC的通信系统中的用户设备的成本。

公开(公告)号：US09031021B2

公开(公告)日：2015-05-12

申请号：US13630633

申请日：2012-09-28

Applicant: Alcatel-Lucent USA Inc.

Inventor： Sigen Ye ,  Matthew P J Baker ,  Fang-Chen Cheng ,  Shin Horng Wong

IPC: H04W72/12 ,  H04W72/04 ,  H04L1/00

CPC classification number: H04W72/042 ,  H04L1/00 ,  H04L1/0031 ,  H04L1/0039 ,  H04W72/12

Abstract: A method of specifying one or more sets of one or more physical resource block (PRB) pairs from among a plurality of PRB pairs in a subframe that a user equipment (UE) is to monitor for an enhanced physical downlink control channel (EPDCCH) includes sending, from a base station, a first representation of the PRB blocks, the representation including a plurality of bits, a total number of the plurality of bits being less than a product of total number of the plurality of PRB pairs and a total number of the one or more sets, the first representation indicating which of the plurality of PRB pairs are in at least one of the one or more sets of one or more PRB pairs the UE is to monitor for the EPDCCH.

Abstract translation: 一种在用户设备（UE）监视增强物理下行链路控制信道（EPDCCH）的子帧中从多个PRB对中指定一个或多个物理资源块（PRB）对的一个或多个集合的方法包括： 从基站发送PRB块的第一表示，所述表示包括多个比特，所述多个比特的总数小于所述多个PRB对的总数的乘积和所述多个PRB对的总数的乘积 所述一个或多个集合，所述第一表示指示所述多个PRB对中的哪个在所述一个或多个一组或多个PRB对中的至少一个中，所述一个或多个PRB对UE将要为EPDCCH监视。

公开(公告)号：US20140092815A1

公开(公告)日：2014-04-03

申请号：US13630633

申请日：2012-09-28

Applicant: Alcatel-Lucent USA Inc.

Inventor： Sigen Ye ,  Matthew P. J. Baker ,  Fang-Chen Cheng ,  Shin Horng WONG

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04L1/00 ,  H04L1/0031 ,  H04L1/0039 ,  H04W72/12

Abstract: A method of specifying one or more sets of one or more physical resource block (PRB) pairs from among a plurality of PRB pairs in a subframe that a user equipment (UE) is to monitor for an enhanced physical downlink control channel (EPDCCH) includes sending, from a base station, a first representation of the PRB blocks, the representation including a plurality of bits, a total number of the plurality of bits being less than a product of total number of the plurality of PRB pairs and a total number of the one or more sets, the first representation indicating which of the plurality of PRB pairs are in at least one of the one or more sets of one or more PRB pairs the UE is to monitor for the EPDCCH.

Abstract translation: 一种在用户设备（UE）监视增强物理下行链路控制信道（EPDCCH）的子帧中从多个PRB对中指定一个或多个物理资源块（PRB）对的一个或多个集合的方法包括： 从基站发送PRB块的第一表示，所述表示包括多个比特，所述多个比特的总数小于所述多个PRB对的总数的乘积和所述多个PRB对的总数的乘积 所述一个或多个集合，所述第一表示指示所述多个PRB对中的哪个在所述一个或多个一组或多个PRB对中的至少一个中，所述一个或多个PRB对UE将要为EPDCCH监视。

公开(公告)号：US11291051B2

公开(公告)日：2022-03-29

申请号：US15023781

申请日：2013-09-27

Applicant: Alcatel Lucent

Inventor： Shin Horng Wong ,  Sigen Ye ,  Yu Chen

IPC: H04W74/08 ,  H04W4/70

Abstract: One embodiment of the present disclosure relates to a method for random access in a base station supporting communication with at least one CE-MTC UE. The method comprises: receiving from a user equipment, repetition transmissions of a first message including a random access preamble; repeatedly transmitting to the user equipment a second message including a random access response, RAR, wherein the second message has a characteristic dependent upon a first repetition level. Another embodiment of the present invention also relates to corresponding method for random access in a user equipment. According to an aspect of the present disclosure, there are provided corresponding devices.

公开(公告)号：US11129186B2

公开(公告)日：2021-09-21

申请号：US16073949

申请日：2017-01-24

Applicant: Alcatel Lucent

Inventor： Jianguo Liu ,  Tao Tao ,  Yan Meng ,  Sigen Ye ,  Junrong Gu ,  Gang Shen

IPC: H04W72/14 ,  H04W72/04 ,  H04W72/12

Abstract: Embodiments of the present disclosure provide a method and apparatus for transmitting uplink grant, the method comprising: transmitting the uplink grant by selecting a downlink subframe from a plurality of candidate downlink subframes each of the plurality of downlink subframes enabling scheduling of at least one user equipment to start transmitting burst data in a uplink subframe.

公开(公告)号：US11101920B2

公开(公告)日：2021-08-24

申请号：US15534292

申请日：2014-11-07

Applicant: Alcatel Lucent

Inventor： Matthew P. J. Baker ,  Sigen Ye ,  Teck Hu ,  Shin Horng Wong ,  Feng Han

IPC: H04W4/00 ,  H04L1/00 ,  H04L1/18 ,  H04W72/04 ,  H04L5/00

Abstract: A transmitting device performs a channel assessment in a previous sub-frame in an unlicensed carrier. After a successful channel assessment, the transmitting device starts a data transmission. The transmitting device transmits a control message for indicating the data transmission in (E)PDCCH. The control message may include the starting time of the data transmission and/or at least one transmission characteristic in the previous sub-frame. The transmission device may transmit an initial control message for indicating a potential data transmission being started in the sub-frame in which the initial control message is transmitting. Method and apparatus enable (E)CCA to take place at any time, and data transmission to start earlier than the next sub-frame boundary after a successful completion of (E)CCA, thus improving the data transmission capacity, especially in circumstances when the maximum length of transmission is constrained.

公开(公告)号：US10470213B2

公开(公告)日：2019-11-05

申请号：US15524493

申请日：2015-11-03

Applicant: Alcatel Lucent

Inventor： Jianguo Liu ,  Feng Han ,  Yan Meng ,  Gang Shen ,  Sigen Ye ,  Jun Wang ,  Matthew Baker

IPC: H04W74/08 ,  H04L27/26 ,  H04W16/14

Abstract: The present invention relates to a method and an apparatus for implementing Listen-Before-Talk. According to an embodiment of the present invention, if the channel assessment does not stop at a boundary of the first symbol, the preamble comprises at least a first part, and if the channel assessment stops at the boundary of the first symbol, the preamble comprises a second part. And the first part is transmitted on a remaining portion of the first symbol until the end of the first symbol, and the second part is transmitted on at least one symbol following the first symbol. Besides, the data is transmitted to the receiving device in at least one symbol in the subframe in which the preamble transmission ends.

公开(公告)号：US20180152969A1

公开(公告)日：2018-05-31

申请号：US15575085

申请日：2016-05-12

Applicant: ALCATEL LUCENT

Inventor： Tao Tao ,  Jianguo Liu ,  Feng Han ,  Yan Meng ,  Sigen Ye ,  Junrong Gu ,  Dandan Wang ,  Gang Shen

IPC: H04W74/08 ,  H04W28/02 ,  H04L12/26

CPC classification number: H04W74/0841 ,  H04L1/1812 ,  H04L5/0055 ,  H04L43/0823 ,  H04L43/16 ,  H04W28/0289 ,  H04W74/0825 ,  H04W74/085

Abstract: The present invention provides a method of triggering a LBT random backoff mechanism in LTE LAA, the method comprising: evaluating a current channel to obtain a first parameter characterizing a congestion state of the current channel; comparing the first parameter with a first threshold to obtain a first comparison result; and adapting a contention window size based on the first comparison result. The method further comprises comparing the first parameter with a second threshold to obtain a second comparison result; and adapting the contention window size based on the second comparison result. The first parameter is a packet error rate metric or a collision metric. The method inventively uses the comparison between a first parameter characterizing a congestion state of the current channel and a predefined threshold to increase or decrease the contention window size correspondingly, such that not only the fairness problem with other Systems, a WiFi System, for example, is guaranteed, the usage efficiency of the communication resource and the performance of the whole wireless communication System will be also enhanced.

公开(公告)号：US09049712B2

公开(公告)日：2015-06-02

申请号：US14246662

申请日：2014-04-07

Applicant: Alcatel-Lucent

Inventor： Matthew Baker ,  Fang-chen Cheng ,  Sigen Ye

IPC: H04W72/04 ,  H04W48/12

CPC classification number: H04W72/042 ,  H04W48/12

Abstract: In one embodiment, the method of configuring a common search space (CSS) for at least one user equipment (UE) in a wireless communication system with at least a first type of physical downlink control channel includes broadcasting at least one parameter of a common search space (CSS), none of the parameters being the number of orthogonal frequency-division multiplex (OFDM) symbols. In one embodiment, a method of configuring a default user equipment-specific search space (USS) for a user equipment (UE) in a wireless communication system with at least a first type of physical downlink control channel includes broadcasting at least one parameter of the default USS, none of the parameters being based on an identifier of the UE. The broadcasting may occur before UE-specific signaling. In one embodiment, a method of configuring or reconfiguring the USS may include transmitting at least one parameter of the USS with UE-specific signaling.

Abstract translation: 在一个实施例中，在具有至少第一类型的物理下行链路控制信道的无线通信系统中为至少一个用户设备（UE）配置公共搜索空间（CSS）的方法包括：广播共同搜索的至少一个参数 空间（CSS），没有参数是正交频分复用（OFDM）符号的数量。 在一个实施例中，在具有至少第一类型的物理下行链路控制信道的无线通信系统中配置针对用户设备（UE）的默认用户设备特定搜索空间（USS）的方法包括：广播至少一个 默认USS，这些参数都不是基于UE的标识符。 广播可能发生在UE特定信令之前。 在一个实施例中，配置或重新配置USS的方法可以包括用UE专用信令来发送USS的至少一个参数。

公开(公告)号：US20150103761A1

公开(公告)日：2015-04-16

申请号：US14383814

申请日：2013-03-04

Applicant: ALCATEL LUCENT

Inventor： Yu Chen ,  Sigen Ye

IPC: H04W74/08

CPC classification number: H04W74/0833 ,  H04W4/70

Abstract: A method and apparatus for random access are provided in the present invention. According to an embodiment of the present invention, a base station configures multiple preamble groups and configures at least one preamble for the respective preamble group according to a predetermined condition; broadcasts preamble configuration information to the respective user equipment, the preamble configuration information including the information associated with the respective preamble group; the user equipment selects the corresponding preamble group according to the received preamble configuration information and the communication bandwidth supported by the user equipment itself, and selects a preamble from the selected preamble group randomly and transmits it to the base station; the base station determines the communication bandwidth supported by the user equipment according to the received preamble; the base station proceeds the further communication with the user equipment within the communication bandwidth supported by the user equipment. Through the method, in the case of a wide system bandwidth, the communication of the narrow band user equipment can also be supported simply and efficiently, thus the application of the narrow band user equipment has been improved.

Abstract translation: 在本发明中提供了用于随机存取的方法和装置。 根据本发明的一个实施例，基站根据预定条件配置多个前同步码组并配置相应前同步码组的至少一个前同步码; 向相应的用户设备广播前导码配置信息，所述前导码配置信息包括与相应前同步码组相关联的信息; 用户设备根据接收到的前导码配置信息和用户设备本身支持的通信带宽选择对应的前导码组，并随机选择来自所选前同步组的前同步码，并发送给基站; 基站根据接收到的前导码确定用户设备支持的通信带宽; 基站在由用户设备支持的通信带宽内进行与用户设备的进一步通信。 通过该方法，在宽系统带宽的情况下，窄带用户设备的通信也可以简单有效地进行支持，从而提高了窄带用户设备的应用。