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    METHOD AND APPARATUS FOR WIRELESS COMMUNICATION
    2.
    发明公开
    METHOD AND APPARATUS FOR WIRELESS COMMUNICATION 审中-公开

    公开(公告)号：EP3375121A1

    公开(公告)日：2018-09-19

    申请号：EP16791121.3

    申请日：2016-10-19

    申请人： Telefonaktiebolaget LM Ericsson (PUBL)

    发明人： SKÖLD, Johan ,  BALDEMAIR, Robert ,  BJÖRKEGREN, Håkan

    IPC分类号： H04L5/00

    CPC分类号： H04L5/001 ,  H04L5/0007 ,  H04L5/003 ,  H04L27/2602 ,  H04L27/2634 ,  H04W72/0406 ,  H04W72/0453 ,  H04W88/08

    摘要： Teachings herein improve the choice of carrier placement in a wireless communication network by de-coupling the carrier raster from the subcarrier grid. Recognizing that the placement of a carrier by its center frequency is an artificial construct, it is re-defined and the carrier placement is instead defined by the carrier position, which is on a carrier raster (e.g., 100 kHz), but in general does not have to be the center of the carrier. Second, a subcarrier grid is defined that is common for all RF carriers and spanning a range of frequencies, at least within an operating band, and provides orthogonality for subcarriers within all RF carriers regardless of carrier position. Third, a unique mapping from the carrier position on the RF carrier raster to a subcarrier reference position, e.g., the DC subcarrier, is defined, which in turn identifies the exact position of the RF carrier on the subcarrier grid.

    DYNAMIC CANCELLATION OF PASSIVE INTERMODULATION INTERFERENCE
    3.
    发明公开
    DYNAMIC CANCELLATION OF PASSIVE INTERMODULATION INTERFERENCE 审中-公开
    动态抑制无源互调干扰

    公开(公告)号：EP2710740A1

    公开(公告)日：2014-03-26

    申请号：EP11799195.0

    申请日：2011-09-09

    申请人： Telefonaktiebolaget LM Ericsson (PUBL)

    发明人： LI, Shaohua ,  WANG, Meng ,  CHENG, Jung-Fu ,  SKÖLD, Johan ,  GHASEMZADEH, Farshid ,  LARSSON, Magnus ,  BALDEMAIR, Robert

    IPC分类号： H04B1/10 ,  H04B1/12 ,  H04B1/52

    CPC分类号： H04B1/109 ,  H04B1/123 ,  H04B1/525

    摘要： A wireless communication node (10) dynamically estimates passive intermodulation (PIM) interference coupled into the node's receive path from the transmission of a composite signal through the node's transmit path. The node (10) then cancels the estimated PIM interference in the receive path. In some embodiments, the node dynamically estimates the PIM interference as a function of the composite signal that models PIM interference generation and coupling in the node (10) according to one or more coefficients (30). The coefficients (30) may be determined by transmitting a test signal (34) during a test stage, when the node (10) is not scheduled to receive any signal. Later, when the composite signal (18) is transmitted, the node (10) uses the coefficients (10) to dynamically estimate and cancel the resulting PIM interference.

    A method for demodulating information in a communication system that supports multiple modulation schemes
    7.
    发明授权
    A method for demodulating information in a communication system that supports multiple modulation schemes 有权
    一种用于信息在通信系统中具有多个调制类型的解调过程

    公开(公告)号：EP1010265B1

    公开(公告)日：2012-05-09

    申请号：EP98941979.1

    申请日：1998-08-28

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： FRODIGH, Carl Magnus ,  SKÖLD, Johan ,  MUELLER, Frank ,  HÖÖK, Mikael ,  SCHRAMM, Peter

    IPC分类号： H04B7/26 ,  H04L27/34

    CPC分类号： H04L27/0008

    摘要： A method of demodulating voice or data and control information in systems that support multiple modulation schemes modulates voice or data using a first linear modulation scheme, such as 16QAM modulation scheme, and modulates control information using a second linear modulation scheme, for example, QPSK modulation scheme, that has the same symbol rate as that of the first modulation scheme. The first linear modulation scheme has a higher modulation level than the second linear modulation scheme. Information modulated using the second linear modulation scheme, which uses a reduced signal set of the first linear modulation scheme, are demodulated using the same demodulator that is used for demodulating information modulated using the first linear modulation scheme. Also, in-band signalling information within a traffic channel, such as stealing flags, are modulated using the second modulation scheme.

    NUMBERING OF RADIO FREQUENCY CHANNELS
    10.
    发明公开
    NUMBERING OF RADIO FREQUENCY CHANNELS 审中-公开
    高频率信道数

    公开(公告)号：EP2179621A1

    公开(公告)日：2010-04-28

    申请号：EP08724271.5

    申请日：2008-03-25

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： QUESETH, Olav ,  KAZMI, Muhammad ,  SKÖLD, Johan

    IPC分类号： H04W72/04 ,  H04W88/08

    CPC分类号： H04W4/06

    摘要： The present invention relates to a method and arrangements where each frequency channel is assigned a primary (global) number and a secondary (in-band) number. In accordance with embodiments of the present invention the primary number for one frequency channel (e.g. unicast downlink channel) and one or more secondary channel numbers to account for the corresponding unicast uplink and/or for one or more MBSFN channels are signalled. The primary (global) number indicates the band and frequency channel number while the secondary (in-band) number indicates the frequency channel within the relevant frequency band.