Abstract: A transmitting device performs a channel assessment in a previous sub-frame in an unlicensed carrier. After a successful channel assessment, the transmitting device starts a data transmission. The transmitting device transmits a control message for indicating the data transmission in (E)PDCCH. The control message may include the starting time of the data transmission and/or at least one transmission characteristic in the previous sub-frame. The transmission device may transmit an initial control message for indicating a potential data transmission being started in the sub-frame in which the initial control message is transmitting. Method and apparatus enable (E)CCA to take place at any time, and data transmission to start earlier than the next sub-frame boundary after a successful completion of (E)CCA, thus improving the data transmission capacity, especially in circumstances when the maximum length of transmission is constrained.

Abstract: A method is provided for assisting data transmission on a first carrier by indicating a termination point of data transmission in a transmitting device and apparatus thereof, wherein the method comprises the steps of: A. transmitting data on the carrier to a receiving device in a first subframe; and B. transmitting downlink control information to the receiving device; wherein the downlink control information includes a termination point indication for indicating a termination point of the data in the first subframe. The method and apparatus could improve the utilization of subframe and transmission capacity, and enable LTE to satisfy the regulations for unlicensed operation with high spectral efficiency.

Abstract: The present disclosure provides methods and apparatuses for HARQ retransmission on an unlicensed carrier in an LTE-LAA system. A method in the base station includes: performing a CCA detection on the unlicensed carrier to determine energy on the unlicensed carrier and, at the same time, initiating an HARQ discarding timer for the unlicensed carrier, when the base station and a UE operate on the unlicensed carrier; comparing the determined energy with a predetermined CCA threshold; if the determined energy on the unlicensed carrier is not smaller than the CCA threshold until the HARQ discarding timer is expired, giving up the HARQ retransmission on the unlicensed carrier; and if the energy is detected to be smaller than the CCA threshold before the HARQ discarding timer is expired, continuing the HARQ retransmission on the unlicensed carrier.

Abstract: The method includes receiving, at a user equipment, a request-to-send (RTS) signal from a base station in an unlicensed channel, the RTS signal including individual IDs or group IDs of multiple user equipments, the multiple user equipments including the user equipment; and identifying whether the RTS signal includes an individual ID or group ID of the user equipment, wherein the identifying includes sending a clear-to-send (CTS) signal to the base station in a licensed channel or the unlicensed channel to allow the base station to perform data transmission to the user equipment in response to the RTS signal including the individual ID or group ID of the user equipment; and ignoring the RTS signal in response to the RTS signal not including the individual ID or group ID of the user equipment.

Abstract: The invention provides the method and apparatus for node and UE to schedule and transmit CTS in a communication network. The method comprises that a node transmits a RTS for indicating a CTS scheduling information to a LTE in an unlicensed band, wherein the scheduling information is used to indicate the LTE to send a CTS in uplink licensed band in response to the RTS. The CTS scheduling information may explicitly include time resource and frequency resource for the UE to transmit the CTS. The CTS scheduling information may implicitly indicate the time and frequency resource for the UE to transmit the CTS. Based on the explicit or implicit schemes of the present application, the scheduling signaling overhead can be reduced and the co-existence problem between LTE-U/LTE-U or between LTE-U/Wi-Fi can be efficiently mitigated.

Abstract: At least one example embodiment discloses a system including a network element configured to transmit at least first downlink control information and second downlink control information to a first user equipment (UE) being served by a serving cell, the first downlink control information associated with a first identification and the second downlink control information associated with a second identification, and the second downlink control information corresponding to at least one interfering source.

Abstract: According an embodiment the method includes sending a RRC connection reconfiguration message to a user equipment, the RRC connection reconfiguration message including at least one energy sensing threshold corresponding to at least one unlicensed channel; and receiving a Layer 1 channel indication message via a licensed channel from the user equipment, the Layer 1 channel indication message indicating whether an unlicensed channel is free.

Abstract: Embodiments relate to a concept for testing a transceiver device (302) which may be coupled to an antenna array (312), the antenna array (312) comprising at least two an antenna elements. It is provided (204) spatial radiation characteristics of an antenna reference or the antenna array (312) and at least one antenna element of the antenna array. It is determined (206), based on the spatial radiation characteristics and a predefined test quantity for a spatially unaware receiver or transmitter test of the transceiver device (302), a spatially aware test quantity for testing the transceiver device (302) using the spatially unaware receiver or transmitter test based on the determined spatially aware test quantity.

Abstract: A first user equipment accesses, based on first information in a first downlink control information (DCI) message addressed to the first user equipment, one or more of a plurality of sets of information indicating pairings for multiuser MIMO from a table stored in the first user equipment. The first user equipment performs interference suppression or cancellation for one or more second user equipment based on information in the one of the plurality of sets.

Abstract: Embodiments of the claimed subject matter provide embodiments of methods for supporting dynamic sub frame reconfiguration in a time division duplex wireless communication system. One embodiment includes transmitting, from a first base station to a second base station, a message indicating that the first base station is configured for scheduling uplink transmissions from first user equipment in one or more subframes of a time division duplex frame. The message is transmitted when the second base station is configured for downlink transmission to second user equipment in the subframe(s).

Abstract: A method is provided for assisting data transmission on a first carrier by indicating a termination point of data transmission in a transmitting device and apparatus thereof, wherein the method comprises the steps of: A. transmitting data on the carrier to a receiving device in a first subframe; and B. transmitting downlink control information to the receiving device; wherein the downlink control information includes a termination point indication for indicating a termination point of the data in the first subframe. The method and apparatus could improve the utilization of subframe and transmission capacity, and enable LTE to satisfy the regulations for unlicensed operation with high spectral efficiency.

Abstract: Method and apparatus for supporting a partial sub-frame data transmission in LTE systems. The transmitting device performs a channel assessment in a previous sub-frame in an unlicensed carrier (S110). After a successful channel assessment, the transmitting device starts a data transmission (S120). The transmitting device transmits a control message for indicating the data transmission in (E)PDCCH (S140). The control message may include the starting time of the data transmission and/or at least one transmission characteristic in the previous sub-frame. The transmission device may transmit an initial control message for indicating a potential data transmission being started in the sub-frame in which the initial control message is transmitting.

Abstract: According an embodiment the method includes sending a RRC connection reconfiguration message to a user equipment, the RRC connection reconfiguration message including at least one energy sensing threshold corresponding to at least one unlicensed channel; and receiving a Layer 1 channel indication message via a licensed channel from the user equipment, the Layer 1 channel indication message indicating whether an unlicensed channel is free.

Abstract: The present disclosure provides methods and apparatuses for HARQ retransmission on an unlicensed carrier in an LTE-LAA system. A method in the base station includes: performing a CCA detection on the unlicensed carrier to determine energy on the unlicensed carrier and, at the same time, :initiating an HARQ discarding timer for the unlicensed carrier, when the base station and a UE operate on the unlicensed carrier; comparing the determined energy with a predetermined CCA threshold; if the determined energy on the unlicensed carrier is not smaller than the CCA threshold until the HARQ discarding timer is expired, giving up the HARQ retransmission on the unlicensed carrier; and if the energy is detected to be smaller than the CCA threshold before the HARQ discarding timer is expired, continuing the HARQ retransmission on the unlicensed carrier.

Abstract: The method includes receiving, at a first user equipment, a RTS signal from a base station in an unlicensed channel, the RTS signal including individual IDs or group IDs of multiple user equipments, the multiple user equipments including the first user equipment; identifying whether the RTS signal includes an individual ID or group ID of the first user equipment; sending a CTS signal to the base station in a licensed channel or the unlicensed channel in response to the RTS signaling including the individual ID or group ID of the first user equipment; and ignoring the RTS signal in response to the RTS signal not including the individual ID or group ID of the first user equipment.

Abstract: The invention provides the method and apparatus for node and UE to schedule and transmit CTS in a communication network. The method comprises that a node transmits a RTS for indicating a CTS scheduling information to a LTE in an unlicensed band, wherein the scheduling information is used to indicate the LTE to send a CTS in uplink licensed band in response to the RTS. The CTS scheduling information may explicitly include time resource and frequency resource for the UE to transmit the CTS. The CTS scheduling information may implicitly indicate the time and frequency resource for the UE to transmit the CTS. Based on the explicit or implicit schemes of the present application, the scheduling signaling overhead can be reduced and the co-existence problem between LTE-U/LTE-U or between LTE-U/Wi-Fi can be efficiently mitigated.

Abstract: The invention proposes method of providing measurement reports. The eNodeB sends (S10, S11) a user equipment information about a plurality of subframe patterns used by a plurality of wireless networks respectively, and notifies (S12, S13) the user equipment associations between the measurement reports and said plurality of subframe patterns. The user equipment measures (S14) channel information in at least one subframe patterns, generates measurement reports for said at least one subframe patterns according to said association, and sends (S15, S16) said measurement reports to said eNodeB. The eNodeB relates (S17) each of the received measurement reports with the corresponding subframe pattern according to said association.

Abstract: At least one example embodiment discloses a system including a network element configured to transmit downlink control channel information to a user equipment (UE) using a first bandwidth, the first bandwidth being at least a portion of a long term evolution (LTE) bandwidth, transmit a preamble to the UE using a second bandwidth, the second bandwidth being a bandwidth excluding the LTE bandwidth, and the preamble indicating a scheduled data transmission, and transmit data to the UE using the second bandwidth in accordance with the downlink control channel information and the preamble.

Abstract: A first cell transmits a virtual cell identifier and state information associated with the virtual cell identifier over an interface to a second cell. The first cell and one or more third cells use the virtual cell identifier for transmissions to first user equipment. The state information indicates one of a plurality of states that indicate whether the virtual cell identifier is associated with at least one non-virtual reference signal for the first cell, the second cell, or one or more third cells. The second cell receives the virtual cell identifier and the state information and transmits the virtual cell identifier and state information over an air interface to second user equipment served by the second cell. The second user equipment performs interference cancellation or suppression of transmissions to the first user equipment based on the virtual cell identifier and the state information.

Abstract: Embodiments relate to apparatuses, methods and a computer programs for a mobile transceiver (100) and a base station transceiver (200). The mobile transceiver apparatus (10) comprises means for receiving (12) radio signals from two or more base station transceivers, the means for receiving (12) further having a receive sensitivity determining a possibility to decode data from a radio signal of one of the two or more base station transceivers, while also receiving radio signals from the other of the two or more base station transceivers. The mobile transceiver apparatus further comprises means for providing (14) sensitivity information on the receive sensitivity to an associated base station transceiver (200). The base station transceiver apparatus (20) comprises means for receiving (22) the sensitivity information on the receiver sensitivity and means for determining (24) configuration information on a measurement configuration for the mobile transceiver (100).