知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.025 seconds)

    USE OF COMMON PUBLIC RADIO INTERFACE OVER ASYMMETRIC NETWORKS
    1.
    发明申请
    USE OF COMMON PUBLIC RADIO INTERFACE OVER ASYMMETRIC NETWORKS 审中-公开
    公共无线电接口在非对称网络中的使用

    公开(公告)号：US20150207714A1

    公开(公告)日：2015-07-23

    申请号：US14425771

    申请日：2012-09-24

    Applicant: Telefonaktiebolaget L M Ericsson (publ)

    Inventor： Stefano Ruffini ,  Bjorn Pohlman

    IPC: H04L12/26 ,  H04J3/06 ,  H04J3/16

    CPC classification number: H04L43/0864 ,  H04J3/065 ,  H04J3/0682 ,  H04J3/1652 ,  H04J2203/0082

    Abstract: Communication between a Radio Equipment Control (REC) and a Radio Equipment (RE) in a wireless network uses a Common Public Radio Interface connection. When the Radio Equipment Control and the Radio Equipment are located remote from each other, and are connected by an asymmetric transport network, such as an Optical Transport Network, path delay data is transmitted in the Common Public Radio Interface data frames. This allows the CPRI end nodes to correct for path delay asymmetry using the path delay data.

    Abstract translation: 无线设备控制（REC）和无线设备（RE）之间的通信使用公共无线电接口连接。 当无线电设备控制和无线电设备彼此远离并且通过诸如光传输网络的非对称传输网络连接时，在公共无线电接口数据帧中传送路径延迟数据。 这允许CPRI端节点使用路径延迟数据来校正路径延迟不对称性。

    Use of common public radio interface over asymmetric networks
    2.
    发明授权
    Use of common public radio interface over asymmetric networks 有权

    公开(公告)号：US10148539B2

    公开(公告)日：2018-12-04

    申请号：US14425771

    申请日：2012-09-24

    Applicant: Telefonaktiebolaget L M Ericsson (publ)

    Inventor： Stefano Ruffini ,  Bjorn Pohlman

    IPC: H04L12/26 ,  H04J3/06 ,  H04J3/16

    Abstract: Communication between a Radio Equipment Control (REC) and a Radio Equipment (RE) in a wireless network uses a Common Public Radio Interface connection. When the Radio Equipment Control and the Radio Equipment are located remote from each other, and are connected by an asymmetric transport network, such as an Optical Transport Network, path delay data is transmitted in the Common Public Radio Interface data frames. This allows the CPRI end nodes to correct for path delay asymmetry using the path delay data.

    Methods and nodes for handling delay information in synchronisation packets
    3.
    发明授权
    Methods and nodes for handling delay information in synchronisation packets 有权

    公开(公告)号：US10075253B2

    公开(公告)日：2018-09-11

    申请号：US14905688

    申请日：2015-02-20

    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

    Inventor： Mikael Olofsson ,  Stefano Ruffini

    IPC: H04J3/08 ,  H04J3/06 ,  H04L12/841 ,  H04L12/26

    CPC classification number: H04J3/0673 ,  H04L43/0858 ,  H04L43/10 ,  H04L47/28 ,  H04L47/283

    Abstract: Method and arrangement for providing delay information to synchronization packets passing a transport network node. In a transport network node synchronization packets propagate from a synchronization master node towards boundary clock nodes. The synchronization packets pass the transport network node, in which the synchronization packets are received, and a level of delay is determined. Furthermore, when the level of delay for the synchronization packets is above a threshold, the synchronization packets are marked with a delay indication. The received synchronization packets are sent to the boundary clock node or ordinary clock node, whether or not they are marked. By implementing functionality for determining a level of delay of synchronization packets, and marking passing synchronization packets with delay indications, boundary clock nodes and ordinary clock nodes may differentiate the received synchronization packets based on the delay identifications. Thereby, improved accuracy may be achieved when calculating time synchronization offsets.

    Determining Asymmetries in a Communication Network
    6.
    发明申请
    Determining Asymmetries in a Communication Network 有权
    确定通信网络中的不对称性

    公开(公告)号：US20160105341A1

    公开(公告)日：2016-04-14

    申请号：US14874873

    申请日：2015-10-05

    Applicant: Telefonaktiebolaget L M Ericsson (publ)

    Inventor： Fabio Cavaliere ,  Giulio Bottari ,  Luca Giorgi ,  Stefano Ruffini

    IPC: H04L12/26 ,  H04Q11/00 ,  H04B10/077

    CPC classification number: H04L43/0864 ,  H04B10/07 ,  H04B10/0775 ,  H04B10/0795 ,  H04B2210/072 ,  H04B2210/078 ,  H04J3/0667 ,  H04J14/0201 ,  H04J14/021 ,  H04J14/0226 ,  H04J14/0267 ,  H04J14/0273 ,  H04J14/0275 ,  H04Q11/0066 ,  H04Q2011/0083

    Abstract: A method for measuring asymmetry in propagation delay of first and second links which connect a first node to a second node of a communication network. The method comprises measuring (101) a round trip delay of the first link. The round trip delay can be measured by transmitting (102) a test signal from the first node to the second node over the first link and receiving a reply to the test signal from the second node over the first link. The method further comprises measuring (105) a round trip delay of the second link. The round trip delay can be measured by transmitting (106) a test signal to the second node over the second link and receiving a reply to the test signal from the second node over the second link. A difference in the propagation delay of the first link with respect to the second link is determined (109) using the measured round trip delays of the first link and the second link.

    Abstract translation: 一种用于测量将第一节点连接到通信网络的第二节点的第一和第二链路的传播延迟不对称的方法。 该方法包括测量（101）第一链路的往返延迟。 可以通过在第一链路上将测试信号从第一节点发送（102）到第二节点（102）并通过第一链路接收来自第二节点的测试信号的答复来测量往返延迟。 该方法还包括测量（105）第二链路的往返延迟。 可以通过在第二链路上向第二节点发送（106）测试信号（106）并通过第二链路从第二节点接收对测试信号的回复来测量往返延迟。 使用所测量的第一链路和第二链路的往返延迟来确定第一链路相对于第二链路的传播延迟的差异（109）。

    Communication network nodes and methods performed therein
    7.
    发明授权
    Communication network nodes and methods performed therein 有权
    其中执行的通信网络节点和方法

    公开(公告)号：US09295018B1

    公开(公告)日：2016-03-22

    申请号：US14420969

    申请日：2014-12-17

    Applicant: Telefonaktiebolaget L M Ericsson (publ)

    Inventor： Stefano Ruffini ,  Mats Forsman ,  Tomas Thyni

    IPC: H04W56/00 ,  H04L7/00 ,  H04W84/04

    CPC classification number: H04W56/001 ,  H04J3/0641 ,  H04J3/0658 ,  H04L7/0008 ,  H04W56/0015 ,  H04W84/042

    Abstract: A synchronization module is associated with a network node of a communication network which comprises at least one Synchronization Master entity. The synchronization module has knowledge of a plurality of Synchronization Master references. Endpoints of paths of the plurality of Synchronization Master references are obtained. Each of the paths extends between one Synchronization Master Entity and the first or the second access network node. The paths are obtained from a synchronization report module based on the obtained endpoints. For each of the Synchronization Master references, a first path and a second path of the obtained paths are selected. A time synchronization inaccuracy value between the first and the second access network node is calculated based on the selected paths. A Synchronization Master reference is selected based on the calculated time synchronization inaccuracy values, and the first and the second access network node are notified which Synchronization Master reference was selected.

    Abstract translation: 同步模块与包括至少一个同步主实体的通信网络的网络节点相关联。 同步模块具有多个同步主引用的知识。 获得多个同步主引用的路径的端点。 每个路径在一个同步主机实体和第一或第二接入网络节点之间延伸。 基于获得的端点从同步报告模块获得路径。 对于每个同步主引用，选择所获得的路径的第一路径和第二路径。 基于所选择的路径来计算第一和第二接入网络节点之间的时间同步不准确性值。 基于计算出的时间同步不精确度值选择同步主引用，并通知第一和第二访问网络节点选择了哪个同步主引用。

    Method and apparatus for determining synchronisation references
    9.
    发明授权
    Method and apparatus for determining synchronisation references 有权

    公开(公告)号：US10080205B2

    公开(公告)日：2018-09-18

    申请号：US14771120

    申请日：2015-07-06

    Applicant: Telefonaktiebolaget L M Ericsson (publ)

    Inventor： Paola Iovanna ,  Mats Forsman ,  Stefano Ruffini ,  Tomas Thyni

    IPC: H04W56/00 ,  H04W72/04 ,  H04J3/06

    CPC classification number: H04W56/0015 ,  H04J3/0641 ,  H04J3/0667 ,  H04W72/0446

    Abstract: A backhaul domain of the communication network is determined 400, and a request for a synchronization reference is received 402 from the first access node, the request comprising, ID:s of the first and second access nodes. For each one of the first and second access nodes, a first and a second combination are determined 404 of a first and a second respective synchronization reference and related synchronization paths extending between synchronization reference nodes of the synchronization references and the access nodes. For each one of the first and second access nodes, the first or the second combination of synchronization reference and related synchronization path is selected 406 based on synchronization requirements for the first and second access nodes, and the first path or the second path is requested to be set-up 408 according to the selected 406 combination.By providing functionality which works on the top of existing control of radio and transport domains, appropriate synchronization references may be determined with a limited amount of information exchanged between the respective domains.

    Method and Apparatus for Determining Synchronisation References
    10.
    发明申请
    Method and Apparatus for Determining Synchronisation References 审中-公开

    公开(公告)号：US20170142676A1

    公开(公告)日：2017-05-18

    申请号：US14771120

    申请日：2015-07-06

    Applicant: Telefonaktiebolaget L M Ericsson (publ)

    Inventor： Paola Iovanna ,  Mats Forsman ,  Stefano Ruffini ,  Tomas Thyni

    IPC: H04W56/00 ,  H04W72/04

    CPC classification number: H04W56/0015 ,  H04J3/0641 ,  H04J3/0667 ,  H04W72/0446

    Abstract: A backhaul domain of the communication network is determined 400, and a request for a synchronisation reference is received 402 from the first access node, the request comprising, ID:s of the first and second access nodes. For each one of the first and second access nodes, a first and a second combination are determined 404 of a first and a second respective synchronisation reference and related synchronisation paths extending between synchronisation reference nodes of the synchronisation references and the access nodes. For each one of the first and second access nodes, the first or the second combination of synchronisation reference and related synchronisation path is selected 406 based on synchronisation requirements for the first and second access nodes, and the first path or the second path is requested to be set-up 408 according to the selected 406 combination.By providing functionality which works on the top of existing control of radio and transport domains, appropriate synchronisation references may be determined with a limited amount of information exchanged between the respective domains.

Patent Agency Ranking