公开(公告)号：CA2681426C

公开(公告)日：2016-06-14

申请号：CA2681426

申请日：2008-01-11

Applicant: ERICSSON TELEFON AB L M (PUBL)

Inventor： JADING YLVA ,  JONSSON ELIAS ,  PARKVALL STEFAN ,  DAHLMAN ERIK

IPC: H04L27/26

Abstract: A network unit of an own cell is operated in a radio communication system utilizing a radio interface that includes a radio frame made up of a number of sub-frames. The own cell serves one or more user equipments. Operation includes obtaining information about a scheduling of MBSFN data transmissions in one or more neighboring cells. The information thereby obtained is used to generate an information signal that, for a given sub-frame, enables the one or more user equipments to determine whether neighboring cell measurements can be performed using a unicast group of Orthogonal Frequency Division Multiple access (OFDM) symbols. The information signal is transmitted to the one or more user equipments, which can then use the information to determine how to locate cell-specific reference symbols when doing measurements of neighboring cells.

公开(公告)号：AT536666T

公开(公告)日：2011-12-15

申请号：AT04388092

申请日：2004-12-20

Applicant: ERICSSON TELEFON AB L M

Inventor： CEDERGREN ANDREAS ,  JONSSON ELIAS

IPC: H04B1/707 ,  G06F7/52

公开(公告)号：DE602006016929D1

公开(公告)日：2010-10-28

申请号：DE602006016929

申请日：2006-04-11

Applicant: ERICSSON TELEFON AB L M

Inventor： JONSSON ELIAS ,  PALENIUS TORGNY

IPC: H04W48/20 ,  H04W4/06

公开(公告)号：AT481846T

公开(公告)日：2010-10-15

申请号：AT06742638

申请日：2006-04-11

Applicant: ERICSSON TELEFON AB L M

Inventor： JONSSON ELIAS ,  PALENIUS TORGNY

IPC: H04W48/20 ,  H04W4/06

Abstract: Cells from which to receive information transmitted on a traffic channel that is not subject to power control in a cellular radio communications system are selected. Selection involves, for each of a plurality of candidate cells, using an offset value that indicates a relationship between a pilot channel transmission power and the traffic channel transmission power associated with the candidate cell to determine a value of quality indicative of power of a signal transmitted on the traffic channel associated with the candidate cell; and selecting, based on the values of quality indicative of power of a signal transmitted on the traffic channel, a number, N, of cells from the plurality of candidate cells.

公开(公告)号：CA2681426A1

公开(公告)日：2008-10-02

申请号：CA2681426

申请日：2008-01-11

Applicant: ERICSSON TELEFON AB L M

Inventor： DAHLMAN ERIK ,  PARKVALL STEFAN ,  JONSSON ELIAS ,  JADING YLVA

IPC: H04L27/26

Abstract: A network unit of an own cell is operated in a radio communication system utilizing a radio interface that includes a radio frame made up of a number of sub-frames. The own cell serves one or more user equipments. Operation i ncludes obtaining information about a scheduling of MBSFN data transmissions in one or more neighboring cells. The information thereby obtained is used to generate an information signal that, for a given sub-frame, enables the o ne or more user equipments to determine whether neighboring cell measurement s can be performed using a unicast group of Orthogonal Frequency Division Mu ltiple access (OFDM) symbols. The information signal is transmitted to the o ne or more user equipments, which can then use the information to determine how to locate cell-specific reference symbols when doing measurements of nei ghboring cells.

公开(公告)号：DE60210189D1

公开(公告)日：2006-05-18

申请号：DE60210189

申请日：2002-10-11

Applicant: ERICSSON TELEFON AB L M

Inventor： JONSSON ELIAS

IPC: H04B17/00 ,  H04B1/69 ,  H04B1/707 ,  H04B7/005 ,  H04B7/06

公开(公告)号：AU2003298994A1

公开(公告)日：2004-04-08

申请号：AU2003298994

申请日：2003-09-19

Applicant: ERICSSON TELEFON AB L M

Inventor： BERNHARDSSON BO ,  HRNJEZ TATJANA ,  JONSSON ELIAS ,  OHLSSON JONAS ,  ZIREN MIKAEL

IPC: H03J7/04

Abstract: An automatic frequency control (AFC) system in an electronic device is operated by using an AFC-algorithm component to determine a frequency error corresponding to a difference between a frequency of a signal output from a signal generator and a received signal frequency. The frequency error determined by the AFC-algorithm component is multiplied by a scaling factor, which is set to zero after an adjustment has been made to change a frequency of the signal output from the signal generator. The scaling factor is increased from zero to one over time. The scaled frequency error is used to determine whether to adjust the frequency of the signal output from the signal generator.

公开(公告)号：AU2003282011A8

公开(公告)日：2004-04-08

申请号：AU2003282011

申请日：2003-09-10

Applicant: ERICSSON TELEFON AB L M

Inventor： NILSSON JOHAN ,  LINDOFF BENGT ,  JONSSON ELIAS ,  BERNHARDSSON BO

IPC: H04B7/005 ,  H04W52/40 ,  H04W52/56

Abstract: Methods, receivers, and computer program products for defining asymmetric decision regions of a symbol space to interpret transmitted power control commands are disclosed. A method of determining transmitted power control commands at a receiver can include defining a first decision region of a symbol space associated with a first power control command at the receiver and a second decision region of the symbol space associated with a second power control command at the receiver where the first and second regions are asymmetric with one another.; Methods of determining a transmitted power control command during soft handover mode in a wideband code division multiple access communications system are also discussed wherein a first determination of a combined power control command received from a plurality of transmitters can be combined with a second determination of the combined power control command received from the plurality of transmitters to provide a combined power control command. Related circuits are disclosed as well.

公开(公告)号：CA2753278C

公开(公告)日：2017-07-11

申请号：CA2753278

申请日：2010-02-23

Applicant: ERICSSON TELEFON AB L M

Inventor： CEDERGREN ANDREAS ,  JONSSON ELIAS

IPC: H04B17/327 ,  H04B7/0413

Abstract: Methods and apparatus for processing a received multi-stream (MIMO) signal, and in particular for estimating a per-code traffic-channel-to-pilot power ratio for the MIMO signal are disclosed. An exemplary method includes the calculation of an average symbol amplitude or average symbol power level from a plurality of de-spread traffic channel symbols received in a first transmission slot and the estimation of a corresponding pilot symbol amplitude or pilot symbol power level, based on an estimated propagation channel response and at least one of a plurality of precoding vectors used to generate the MIMO signal. A percode traffic-channel-to-pilot power ratio for the first transmission slot is computed by dividing the average symbol amplitude or average symbol power level by the corresponding pilot symbol amplitude or pilot symbol power level.

公开(公告)号：AU2008334776B2

公开(公告)日：2012-08-02

申请号：AU2008334776

申请日：2008-12-01

Applicant: ERICSSON TELEFON AB L M

Inventor： WATABE HIROAKI ,  CAIRNS DOUGLAS A ,  JONSSON ELIAS ,  UESAKA KAZUYOSHI

IPC: H04B1/707

Abstract: A mobile receiver having a multi-mode interference suppression function and a way to estimate its speed utilizes a parametric approach to interference suppression at high speeds, and a nonparametric approach at low speeds. In particular, if the mobile receiver is currently operating in a nonparametric mode and its speed exceeds a first predetermined threshold, the mobile receiver switches to a parametric mode. Conversely, if the mobile receiver is currently in parametric mode and its speed is less than a second predetermined threshold, the mobile receiver switches to nonparametric mode. In one embodiment, the speed may be estimated by a Doppler frequency in the received signal, and the thresholds are Doppler frequencies. In one embodiment, the first and second thresholds are different, creating a hysteresis in the mode switching.