中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

37 records (took 0.023 seconds)

    METHOD AND ARRANGEMENT FOR DETECTING CONGESTION IN A COMMUNICATIONS NETWORK
    1.
    发明公开
    METHOD AND ARRANGEMENT FOR DETECTING CONGESTION IN A COMMUNICATIONS NETWORK 审中-公开
    方法和系统拥塞在通信网络检测

    公开(公告)号：EP2586235A4

    公开(公告)日：2015-10-28

    申请号：EP10853764

    申请日：2010-06-22

    Applicant: ERICSSON TELEFON AB L M

    Inventor： WIGELL TOOMAS

    IPC: H04L12/801 ,  H04L12/825

    CPC classification number: H04L47/25 ,  H04L43/087 ,  H04L47/12 ,  H04L47/14 ,  H04L47/263 ,  H04L47/283 ,  Y02D50/10

    Abstract: The invention relates to a method and arrangement for detecting congestion in a communications network (120). A receiving node (130) receives (710) data packets from a sending node (110) over a communications link (140). First and second parts (320, 330) of a frequency spectrum (310) of a time delay of the data packets are determined (720). The first part comprises non-congestion related low frequency components. The second part comprises congestion related and non-congestion related low frequency components when a load level of the communications network is above a threshold value (220) but substantially no congestion related low frequency components when the load level is below the threshold value. Then reference jitter level (yr) and congestion jitter level (yg) corresponding to the first and second parts respectively are estimated (740). Finally, congestion state information is determined (750) by comparing said congestion jitter level to said reference jitter level.

    2.
    发明专利
    未知

    公开(公告)号：DE60229879D1

    公开(公告)日：2008-12-24

    申请号：DE60229879

    申请日：2002-11-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： TORSNER JOHAN ,  WIGELL TOOMAS

    IPC: H04L1/16 ,  H04L1/18 ,  H04B1/69 ,  H04L29/08 ,  H04Q7/38 ,  H04W36/02

    Abstract: The present invention relates to a method and system of transmissions and retransmissions of packet data in a communications system, introducing concatenated ARQ loops between a radio network controller and a user equipment. Particularly, the invention relates to a Universal Mobile Telecommunications System, UMTS, or WCDMA system.

    3.
    发明专利
    未知

    公开(公告)号：DE60113717T2

    公开(公告)日：2006-07-13

    申请号：DE60113717

    申请日：2001-11-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： WIGELL TOOMAS ,  TORSNER JOHAN ,  SOEDERSTROEM RAUL ,  PEISA JANNE

    IPC: H04L12/56 ,  H04L1/18

    Abstract: A method of controlling the flow of data, in respect of a given mobile terminal, between a Radio Network Controller (RNC) and a NodeB of a UMTS Terrestrial Radio Access Network (UTRAN) where an Automatic-Repeat-Request (ARQ) mechanism is implemented between the NodeB and said mobile terminal to provide for the retransmission of unsuccessfully transmitted data. The method comprises generating control messages at the NodeB and sending these control messages to the RNC, each control message enabling the RNC to identify which data should next be sent to the NodeB.

    4.
    发明专利
    未知

    公开(公告)号：DE10295631T5

    公开(公告)日：2004-04-22

    申请号：DE10295631

    申请日：2002-01-14

    Applicant: ERICSSON TELEFON AB L M

    Inventor： WIGELL TOOMAS ,  PEISA JANNE ,  SOEDERSTROEM RAUL ,  TORSNER JOHAN

    IPC: H04L12/56 ,  H04L1/18 ,  H04Q7/38

    Abstract: A method of handling the transmission of Radio Link Control (RLC) Protocol Data Units (PDUs) from a Radio Access Network (RAN) of a mobile telecommunications system to User Equipment (UE). At a Gateway of the RAN, RLC Service Data Units (SDUs) are segmented into RLC PDUs for transmission to one or more Base Stations (BSs) of a set of BSs belonging to a handover link set. RLC PDUs received from one or more of those BSs are combined into RLC SDUs for transmission to a core network of the system. Each of the BSs buffers the RLC PDUs received from the Gateway and/or the UE. An Automatic Repetition Request (ARQ) mechanism is implemented at each of the BSs to facilitate reliable transmission of RLC PDUs between the UE and the Gateway.

    Flow control in a radio access network
    5.
    发明专利
    Flow control in a radio access network 未知

    公开(公告)号：GB2361392B

    公开(公告)日：2003-07-23

    申请号：GB0030344

    申请日：2000-12-13

    Applicant: ERICSSON TELEFON AB L M

    Inventor： PEISA JANNE JOHANNES ,  SOEDERSTROEM RAUL ,  WIGELL TOOMAS ,  TORSNER JOHAN

    IPC: H04L1/18 ,  H04L12/56 ,  H04Q7/22

    Abstract: A method of controlling the flow of data, in respect of a given mobile terminal, between a Radio Network Controller (RNC) and a NodeB of a UMTS Terrestrial Radio Access Network (UTRAN) where an Automatic-Repeat-Request (ARQ) mechanism is implemented between the NodeB and said mobile terminal to provide for the retransmission of unsuccessfully transmitted data. The method comprises generating control messages at the NodeB and sending these control messages to the RNC, each control message enabling the RNC to identify which data should next be sent to the NodeB.

    Controlling channel switching in a umts network
    6.
    发明专利
    Controlling channel switching in a umts network 未知

    公开(公告)号：GB2369268A

    公开(公告)日：2002-05-22

    申请号：GB0028314

    申请日：2000-11-21

    Applicant: ERICSSON TELEFON AB L M

    Inventor： MEYER MICHAEL ,  SACHS JOACHIM ,  WAGER STEFAN ,  MATINMIKKO REIJO ,  WIGELL TOOMAS ,  PEISA JANNE JOHANNES ,  VAN DER POL EDWIN

    IPC: H04L12/56 ,  H04W28/14 ,  H04W36/06

    Abstract: In a UMTS terrestrial radio access network (UTRAN), data received at a radio network controller (RNC) from the UTRAN core network is stored in a radio link control (RLC) buffer. Said RNC is connected to a plurality of base stations which may communicate with user equipment UE and data may be extracted from the buffer for transmission to the UE using radio access bearers (RAB). Data generated at the UE may be stored in RLC buffers of a peer RLC entity at the UE. There are three types of bearer: Common allocated to several UE, dedicated which are allocated to a single user and shared downlink. A method of switching channel type comprises estimating the round trip delay for packets travelling between the UE and a peer node with which the UE is communicating. The product of the round trip delay and the bandwidth of the channel is determined and used to define a threshold. The type of channel used may be switched when the fill level of the RLC buffer(s) either reaches, exceeds or falls below said threshold.

    Flow control between transmitter and receiver entities in a communications system
    7.
    发明专利
    Flow control between transmitter and receiver entities in a communications system 未知

    公开(公告)号：AU3630301A

    公开(公告)日：2001-09-03

    申请号：AU3630301

    申请日：2001-02-23

    Applicant: ERICSSON TELEFON AB L M

    Inventor： SCHULTZ GORAN ,  PEISA JANNE ,  WIGELL TOOMAS ,  MATINMIKKO REIJO

    IPC: H04L12/28 ,  H04L47/30 ,  H04W28/10 ,  H04W28/14 ,  H04W80/02 ,  H04W88/12 ,  H04L12/56 ,  H04Q7/22

    Abstract: In certain wireless communication systems, a common channel MAC-c layer (500), a dedicated channel MAC-d layer (510), and a Radio Link Controller are respectively located in a Radio Network Control. The MAC-c layer (500) is provided with a flow control mechanism (530) for managing a number of MAC-d entity data traffic flows directed to the MAC-c buffer (525), so that buffer fill level and the MAC-c entity (500) will remain at a desired level, and all respective data flows each gets a fair share of the data rate between the MAC-c (500) and MAC-d (510) entities. The flow control operates to share MAC-c buffer space with each MAC-d entity (510) providing an active data flow in a sequential, round robin fashion or based on flow activity (greedy manner). Buffer space is assigned or allocated on the basis of MAC-c upper fill level, and is some embodiments also on the basis of active MAC-d buffer fill levels.

Patent Agency Ranking