摘要:
A method, apparatus and computer program product are provided facilitating flexible time sharing among systems. A method and apparatus may generate a secondary component carrier transmission plan including planned on and off durations. The planned on durations correspond to a time period for an apparatus and devices to communicate via an unlicensed band of the secondary component carrier. The planned off durations correspond to a time interval in which the devices may deactivate from the unlicensed band or remain disconnected from the unlicensed band. The method and apparatus may also enable provision of the plan to the devices via a licensed band of a primary component carrier and detecting a medium of the unlicensed band prior to the expiration of the time period to determine whether the medium is available in order to decide whether to turn on transmissions to the unlicensed band after one of the planned off durations.
摘要:
There is provided a mechanism for controlling communications conducted via different frequency bands or communication spectrums. When a communication via a first communication path, for example an unlicensed or white space communication spectrum, is to be established, e.g. for offloading traffic from a second communication path, for example a licensed cellular communication spectrum, a preamble transmission command is generated and transmitted from a communication network control element, such as an eNB, via the second communication path to a communication element, such as a UE. By means of the preamble transmission command, the transmission of a preamble signal by the receiving communication element on the first communication path with predetermined communication resources is triggered. Based on a receipt or non-receipt of the preamble signal via the first communication path, the communication network control element is able to determine that the communication element can establish a connection on the first communication path, for example the unlicensed or white space communication spectrum.
摘要:
The invention allows flexible disabling/enabling of cross-carrier scheduling in carrier-aggregated wireless data transmission. In response to detecting a predetermined disabling indication of cross-carrier scheduling of received carrier aggregated wireless data transmission, the disabling indication targeting subframes allocated to uplink in a first component carrier transmitted from a cross-carrier scheduling cell and to downlink in a second component carrier transmitted from a cross-carrier scheduled cell: a downlink control region in the targeted subframes in the second component carrier is monitored for uplink/downlink grants; and in response to detecting an uplink/downlink grant, the detected uplink/downlink grant is utilized in uplink/downlink scheduling of the targeted subframe in the second component carrier.
摘要:
A radio frame or subframe is checked and it is determined to satisfy at least one predefined condition. In response to that determination, a second search space is utilized such that a number Y of blind detections for a user equipment UE in the determined radio frame/subframe is greater than a number X of blind detections for the UE in the radio frame/subframe if a first search space were utilized. In various embodiments the predefined condition is: the number X of blind detections is less than a threshold value Z (Z>=Y) where Z is a maximum number M of blind detections defined by a transmission mode for the frame's/subframe's component carrier CC; a number of CCs configured for the UE; the radio frame or subframe is in the first CC but not in the second CC one of uplink or a special subframe (further conditions) or an almost blank subframe.
摘要:
A method is provided for configuration of a special subframe pattern configuration. The method may include determining a configuration of a primary special subframe pattern configuration. The first special subframe configuration may have a corresponding secondary special subframe pattern configuration for multiplexing with the primary special subframe pattern configuration. The method may further include, responsive to a downlink assignment following the configuration of the primary special subframe pattern configuration, using the secondary special subframe pattern configuration instead of the primary special subframe pattern configuration. A corresponding apparatus and computer program product are also provided.
摘要:
The invention allows flexible disabling/enabling of cross-carrier scheduling in carrier-aggregated wireless data transmission. In response to detecting a predetermined disabling indication of cross-carrier scheduling of received carrier aggregated wireless data transmission, the disabling indication targeting subframes allocated to uplink in a first component carrier transmitted from a cross-carrier scheduling cell and to downlink in a second component carrier transmitted from a cross-carrier scheduled cell: a downlink control region in the targeted subframes in the second component carrier is monitored for uplink/downlink grants; and in response to detecting an uplink/downlink grant, the detected uplink/downlink grant is utilized in uplink/downlink scheduling of the targeted subframe in the second component carrier.
摘要:
There is provided a mechanism for controlling communications conducted via different frequency bands or communication spectrums. When a communication via a first communication path, for example an unlicensed or white space communication spectrum, is to be established, e.g. for offloading traffic from a second communication path, for example a licensed cellular communication spectrum, a preamble transmission command is generated and transmitted from a communication network control element, such as an eNB, via the second communication path to a communication element, such as a UE. By means of the preamble transmission command, the transmission of a preamble signal by the receiving communication element on the first communication path with predetermined communication resources is triggered. Based on a receipt or non-receipt of the preamble signal via the first communication path, the communication network control element is able to determine that the communication element can establish a connection on the first communication path, for example the unlicensed or white space communication spectrum.
摘要:
A method, apparatus and computer program product are provided facilitating flexible time sharing among systems. A method and apparatus may generate a secondary component carrier transmission plan including planned on and off durations. The planned on durations correspond to a time period for an apparatus and devices to communicate via an unlicensed band of the secondary component carrier. The planned off durations correspond to a time interval in which the devices may deactivate from the unlicensed band or remain disconnected from the unlicensed band. The method and apparatus may also enable provision of the plan to the devices via a licensed band of a primary component carrier and detecting a medium of the unlicensed band prior to the expiration of the time period to determine whether the medium is available in order to decide whether to turn on transmissions to the unlicensed band after one of the planned off durations.
摘要:
Methods, apparatus and computer program products provide channel state information (CS1) measurement and reporting for a segment carrier in certain situations. An apparatus such as a base station may determine whether CSI is needed for a channel of a segment carrier comprising a segment portion and a contiguous bandwidth extension of a backward compatible carrier utilized by a base station for wireless communications with a mobile terminal. In response to determining that CSI is needed, the apparatus configures the mobile terminal to communicate channel state information from the mobile terminal to the base station. In other embodiments, an apparatus such as a mobile terminal is configured to receive configuration data indicating whether CSI is to be measured by the mobile terminal, and measuring the CSI and communicating the CSI to the base station in response to the configuration data.
摘要:
It is provided a method, comprising camping on a first cell in a terminal mode, wherein, in the terminal mode, a mode-enabling downlink signal from the first cell is required; checking if a transition information about an intended transition of the first cell to a sleeping mode is received and if an apparatus performing the method camps in the terminal mode on the first cell, wherein in the sleeping mode of the first cell the mode-enabling downlink signal is not received from the first cell; transmitting a complaint to the first cell if the transition information is received and the apparatus camps in the terminal mode on the first cell.