公开(公告)号：WO2016010526A1

公开(公告)日：2016-01-21

申请号：PCT/US2014/046726

申请日：2014-07-15

Applicant: HITACHI, LTD.

Inventor： GAUR, Sudhanshu ,  MUKHERJEE, Amitav ,  ACHARYA, Joydeep

IPC: H04W74/08

CPC classification number: H04W28/0205

Abstract: The present disclosure is directed to ways in which the mobile core network interacts with the end user to control congestion and bring about traffic management, thus improving the overall end-to-end performance. Example implementations described may involve a core network which constructs a database that stores the traffic characteristics in a given geographical region (such as a train station).The traffic characteristics include the spatio-temporal variation in volume and type of application of the traffic from all users. Based on the database the network determines the congestion that a given user would face for a given type of service flow. This depends on the nature of the flow such as the underlying application and also the priority status of the user.

Abstract translation: 本公开涉及移动核心网与最终用户交互以控制拥塞并带来流量管理的方式，从而提高整体端到端的性能。 所描述的示例实现可以包括构建在给定地理区域（例如火车站）中存储业务特性的数据库的核心网络。业务特征包括来自所有业务的业务的数量和应用类型的时空变化 用户。 基于数据库，网络确定给定用户对于给定类型的服务流将面临的拥塞。 这取决于流的性质，例如底层应用程序以及用户的优先级状态。

公开(公告)号：WO2015167546A1

公开(公告)日：2015-11-05

申请号：PCT/US2014/036207

申请日：2014-04-30

Applicant: HITACHI, LTD.

Inventor： MUKHERJEE, Amitav ,  AKOUM, Salam ,  ACHARYA, Joydeep

IPC: H04L12/26

CPC classification number: H04W80/02 ,  H04L43/0817 ,  H04W28/08 ,  H04W76/12 ,  H04W76/15 ,  H04W92/20

Abstract: Dual connectivity (DC) is a paradigm where a UE is equipped with multiple transmit/receive modules and consumes radio resources from one or more Master eNBs (MeNBs) and Secondary eNBs (SeNBs) simultaneously. In the downlink split bearer DC architecture, the MeNB splits an EPS bearer at the radio level and forwards a portion of the bearer contents to the SeNB which serves it to the UE. Example implementations described herein are directed to how the MeNB performs transmission control and buffer management of the split bearer with minimal coordination from the SeNBs.

Abstract translation: 双连接（DC）是UE配备多个发射/接收模块并同时从一个或多个主eNB（MeNB）和辅助eNB（SeNB）消耗无线电资源的范例。 在下行分组承载DC架构中，MeNB在无线电级别分解EPS承载，并将承载内容的一部分转发给UE所服务的SeNB。 本文描述的示例实现涉及MeNB如何以最小的SeNB的协调来执行分离承载的传输控制和缓冲器管理。

公开(公告)号：WO2015065352A1

公开(公告)日：2015-05-07

申请号：PCT/US2013/067402

申请日：2013-10-30

Applicant: HITACHI, LTD.

Inventor： MUKHERJEE, Amitav ,  GAUR, Sudhanshu

IPC: H04W74/08

CPC classification number: H04W36/00 ,  H04W56/0045

Abstract: A communications system includes a plurality of cells having one or more macro cells and one or more small cells, a user equipment (UE), and a network through which the cells and the UE communicate with each other. A cell of the plurality of cells comprises a memory and a controller, the cell being a source cell that serves as a mobility anchor of the UE to handle all control signaling for the UE and receiving a measurement report from the UE. The controller of the source cell is operable to: choose, based on the measurement report, a target cell from the plurality of cells as a new mobility anchor of the UE; send a handover preparation request to the target cell; receive a handover preparation request acknowledgement from the target cell; and send a handover preparation command to the UE and start data forwarding to the target cell.

Abstract translation: 通信系统包括具有一个或多个宏小区和一个或多个小小区的多个小区，用户设备（UE）和小区和UE彼此通信的网络。 多个小区的小区包括存储器和控制器，所述小区是作为UE的移动锚点的源小区，用于处理UE的所有控制信令并从UE接收测量报告。 源小区的控制器可操作为：基于测量报告，从多个小区中选择目标小区作为UE的新的移动锚点; 向目标小区发送切换准备请求; 从所述目标小区接收切换准备请求确认; 并向UE发送切换准备命令，并开始向目标小区进行数据转发。

公开(公告)号：WO2015084350A1

公开(公告)日：2015-06-11

申请号：PCT/US2013/073179

申请日：2013-12-04

Applicant: HITACHI, LTD.

Inventor： AKOUM, Salam ,  MUKHERJEE, Amitav ,  GAO, Long

IPC: H04K1/10

CPC classification number: H04K1/10 ,  H04B7/024 ,  H04B7/0617 ,  H04B7/0626 ,  H04W16/28

Abstract: Example implementations described herein are directed to operation of heterogeneous networks with dynamic reconfiguration of network parameters of a base station such as antenna tilt, to optimize the deployment of base stations and antennas in the network. In example implementations, associated user equipment and/or base stations derive a feedback consensus for estimating an optimization of one or more of the network parameters based on one or more metrics such as channel quality. Based on the one or more metrics, the feedback consensus is reached iteratively for the network parameters, and the base station is then informed of the optimized estimation of the network parameters.

Abstract translation: 本文描述的示例实现涉及具有基站的网络参数（例如天线倾斜）的动态重新配置的异构网络的操作，以优化网络中的基站和天线的部署。 在示例实现中，相关联的用户设备和/或基站基于一个或多个度量（例如信道质量）导出用于估计网络参数中的一个或多个的优化的反馈共识。 基于一个或多个度量，针对网络参数迭代地获得反馈一致性，然后基站通知网络参数的优化估计。

公开(公告)号：WO2015038097A1

公开(公告)日：2015-03-19

申请号：PCT/US2013/058989

申请日：2013-09-10

Applicant: HITACHI, LTD. ,  MUKHERJEE, Amitav ,  AKOUM, Salam ,  ACHARYA, Joydeep

Inventor： MUKHERJEE, Amitav ,  AKOUM, Salam ,  ACHARYA, Joydeep

IPC: H04W36/04

CPC classification number: H04W36/0005 ,  H04W36/04

Abstract: Example implementations described herein are directed to methods for low-complexity grouping of UEs and base stations that also take into account traffic loads of candidate serving cells, base station and UE capabilities, and wireless link quality. In example implementations, a base station receives measurement information from associated user equipment and reporting information from neighboring base stations to calculate grouping assignments for the associated user equipment and/or the neighboring base stations.

Abstract translation: 本文描述的示例实现涉及也考虑了候选服务小区，基站和UE能力以及无线链路质量的业务负载的UE和基站的低复杂度分组的方法。 在示例实现中，基站从相关联的用户设备接收测量信息并从相邻基站接收报告信息，以计算相关用户设备和/或相邻基站的分组分配。

公开(公告)号：WO2015116070A1

公开(公告)日：2015-08-06

申请号：PCT/US2014/013678

申请日：2014-01-29

Applicant: HITACHI, LTD.

Inventor： MUKHERJEE, Amitav ,  GAO, Long ,  GAUR, Sudhanshu

IPC: H04W72/12

CPC classification number: H04W72/082 ,  H04L5/0053 ,  H04L5/0073

Abstract: Reliable decoding of control channels can be important in Long Term Evolution/Long Term Evolution Advanced (LTE/LTE-A) networks. Methods are provided for intercell interference coordination of control channels in LTE networks. Dense deployments of heterogeneous and small cell networks can increase interference and further degrade control channel (CC) reception. With coordination between base stations, interference to legacy or enhanced control channels can be mitigated. However, the overhead and periodicity of coordination can be dependent on the inter-eNB backhaul link quality. Implementations are provided for CC ICIC, under various backhaul quality assumptions.

Abstract translation: 控制信道的可靠解码在长期演进/长期演进高级（LTE / LTE-A）网络中是重要的。 为LTE网络中控制信道的小区干扰协调提供了方法。 异构和小型小区网络的密集部署可能会增加干扰并进一步降低控制信道（CC）接收。 通过基站之间的协调，可以减轻对传统或增强控制信道的干扰。 然而，协调的开销和周期可以取决于eNB之间的回程链路质量。 根据各种回程质量假设，为CC ICIC提供实施。

公开(公告)号：WO2015152931A1

公开(公告)日：2015-10-08

申请号：PCT/US2014/032887

申请日：2014-04-03

Applicant: HITACHI, LTD.

Inventor： AKOUM, Salam ,  ACHARYA, Joydeep ,  MUKHERJEE, Amitav

IPC: H04W88/08

CPC classification number: H04W16/28

Abstract: Example implementations described herein are directed to forming additional sectors in the vertical domain (called vertical sectorization) for a base station (BS). Example implementations may involve various methods of forming and operating vertical sectors. Example implementations may involve a BS configured with a two dimensional active antenna grid such as in a Full Dimensional Multiple Input Multiple Output (FD-MIMO) system. Example implementations may allow a network operator to create vertical sectors, perform initial configuration and optimize the subsequent data rate performance.

Abstract translation: 本文描述的示例性实现涉及在基站（BS）的垂直域（称为垂直扇区化）中形成附加扇区。 示例性实现可以涉及形成和操作垂直扇区的各种方法。 示例性实现可以包括配置有诸如全尺寸多输入多输出（FD-MIMO）系统中的二维有源天线网格的BS。 示例实现可以允许网络运营商创建垂直扇区，执行初始配置并优化随后的数据速率性能。