Method and apparatus for spatial modulation based on virtual antenna

    公开(公告)号:US10476729B2

    公开(公告)日:2019-11-12

    申请号:US15549135

    申请日:2015-02-04

    Abstract: Disclosed is a method of transmitting signals by a transmitting side device having multiple antennas. In this method, the transmitting side device spatially modulates information to be transmitted, where the information is spatially modulated to be represented based on which antennas among the N antennas are selected to be used for transmission. And, the transmitting side device transmits the spatially modulated information through the selected antennas. Here, the number of the selected antennas for transmitting one transmission information unit (hereinafter, ‘M’ where M≤N) is plural. And, different sequence of the selected antennas represents different information to be transmitted.

    Beam scanning method using codebook in wireless communication system

    公开(公告)号:US10469149B2

    公开(公告)日:2019-11-05

    申请号:US15753536

    申请日:2016-07-29

    Abstract: Disclosed are a beam scanning method and a base station, the method in which generated is a code book comprising a plurality of second precoders, defined by the weighted sums of a plurality of first precoders, and in which a plurality of synchronization signals, to which applied are second precoders that are selected from the code book and differ from each other, are transmitted to a terminal over a plurality of time intervals. The synchronization signals are used in synchronization, beam scanning and cell ID acquisition of the terminal, and each weighted sum applied to the plurality of first precoders indicates a beam ID used in the beam scanning.

    Resource allocation method and signal processing method of terminal

    公开(公告)号:US10327156B2

    公开(公告)日:2019-06-18

    申请号:US15324248

    申请日:2014-07-15

    Abstract: A resource allocation method according to the present invention may comprise the steps of: allocating a signal of an external resource to a predetermined resource according to a preconfigured resource allocation frame structure by a first base station governing a first cell; allocating a signal of an internal resource to the resource according to the resource allocation frame structure by a second base station governing a second cell adjacent to the first cell; and frequency-hopping the signal of the internal resource by the second base station when the signal of the internal resource overlaps the signal of the external resource. Accordingly, proposed is a resource allocation method capable of stably receiving a signal even when a terminal moving in a dense small cell structure is located at a cell edge, that is, an inter-cell boundary area.

    Method of providing services to user equipment having multiple antenna units

    公开(公告)号:US10306691B2

    公开(公告)日:2019-05-28

    申请号:US15738542

    申请日:2016-03-28

    Abstract: The present document is for a wireless communication using multiple antenna units based on new virtual user equipment (virtual UE) concept. A user equipment (UE), according to the present invention, receives service from a network in a wireless communication system by registering multiple antenna units of the UE as two or more virtual UEs with a first network entity of the network, wherein the first network entity is a network node for physical radio link control; and receiving the service from the network by the two or more virtual UEs. The two or more virtual UEs of the UE are recognized as one UE by network entities of the network other than the first network entity.

    Handover method between heterogeneous wireless communication techniques and device for same

    公开(公告)号:US10306520B2

    公开(公告)日:2019-05-28

    申请号:US15507709

    申请日:2014-10-16

    Abstract: The present invention relates to a handover method between heterogeneous wireless communication techniques and a device for same. A wireless access device is capable of: transmitting to a terminal condition information related to conditions required for the terminal to carry out a predetermined reporting action; establishing wireless connection with the terminal, when a request from the terminal due to the reporting action has been received; providing to a network controller of a core network a message according to the reporting action; receiving from the network controller context information of the terminal for establishing security and data bearers; establishing a data bearer for each data flow to be handed over by using the context information, when a request for data transmission/reception according to the handover has been received from the terminal; and receiving data from the terminal.

    Scalable service in a wireless communication system

    公开(公告)号:US10135577B2

    公开(公告)日:2018-11-20

    申请号:US14635397

    申请日:2015-03-02

    Abstract: A method for providing scalable service in a wireless communication system is disclosed. In this method, the transmitting side device transmits base layer signals and enhancement layer signals for one scalable service to a user equipment (UE) based on a HARQ (Hybrid Automatic Repeat Request) scheme. The base layer signals can be independently used at the UE without the enhancement layer signals. On the other hand, the enhancement layer signals cannot be used at the UE without the base layer signals. The transmitting side device also retransmits the base layer signals before a retransmission of the enhancement layer signals when there are both of the base layer signals and the enhancement layer signals to be retransmitted based on the HARQ scheme.

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