Lte-u uplink waveform and variable multi-subframe scheduling

An apparatus comprising:

• at least one processor configured for determining a uplink resource block configuration comprising at least one set of resource blocks uniformly distributed in a portion of a bandwidth occupying at least a minimum predetermined bandwidth threshold;
• a transceiver configured for sending a transmission in the at least one set of the resource blocks;
• and
• a memory coupled to the at least one processor for storing data.

A computer program product comprising:

• computer-readable medium storing code for causing at least one computer to:
• determine a uplink resource block configuration comprising at least one set of resource blocks uniformly distributed in a portion of a bandwidth occupying at least a minimum predetermined bandwidth threshold;
• and
• send a transmission in the at least one set of the resource blocks.

A computer program product comprising:

• computer-readable medium storing code for causing at least one computer to:
• broadcast an indication comprising a channel use beacon signal (CUBS) transmission for channel utilization in response to detecting a clear channel in a clear channel assessment (CCA) occasion, wherein a clear channel is defined as energy level below a threshold or no detection of CUBS signal;
• and
• continuously transmit on at least one subframe succeeding the CUBS transmission.

An apparatus comprising:

• at least one processor configured for determining a uplink resource block configuration comprising at least a first set of dynamically scheduled resource blocks and at least a second resource block over a predetermined set of resource blocks on the edge of the channel bandwidth, the resource block configuration occupying at least a minimum predetermined bandwidth threshold;
• a transceiver configured for sending a transmission in the at least one of the resource block in the first set and one of the resource block in the second set;
• and
• a memory coupled to the at least one processor for storing data.

A computer program product comprising:

• computer-readable medium storing code for causing at least one computer to:
• determine a uplink resource block configuration comprising at least a first set of dynamically scheduled resource blocks and at least a second resource block over a predetermined set of resource blocks on the edge of the channel bandwidth, the resource block configuration occupying at least a minimum predetermined bandwidth threshold;
• and
• send a transmission in the at least one of the resource block in the first set and one of the resource block in the second set.

A method for wireless communication operable by a mobile device, the method comprising:

• determining a plurality of channel utilization resource blocks assigned to a plurality of mobile devices, the assigned determined by time division multiplexing;
• performing a first clear channel assessment (CCA), wherein the CCA occasion occupies a fraction of an OFDM symbol duration;
• if CCA is successful, broadcasting an indication for channel utilization as a channel use beacon signal (CUBS) based on the determination, wherein the CUBS transmission is aligned to a predetermined OFDM symbol boundary;
• if receiving a grant for transmission on non-contiguous transmission, performing at least a second CCA before each non-contiguous transmission;
• and
• if the second CCA is successful, transmitting the scheduled transmission without transmitting CUBS.

An apparatus comprising:

• means for determining a plurality of channel utilization resource blocks assigned to a plurality of mobile devices, the assigned determined by time division multiplexing;
• means for performing a first clear channel assessment (CCA), wherein the CCA occasion occupies a fraction of an OFDM symbol duration;
• means for broadcasting, if CCA is successful, an indication for channel utilization as a channel use beacon signal (CUBS) based on the determination, wherein the CUBS transmission are aligned to a predetermined OFDM symbol boundary;
• means for performing at least a second CCA before each non-contiguous transmission if receiving a grant for transmission on non-contiguous transmission;
• and
• means for transmitting the scheduled transmission without transmitting CUBS if the second CCA is successful.

An apparatus comprising:

• at least one processor configured for:
• determining a plurality of channel utilization resource blocks assigned to a plurality of mobile devices, the assigned determined by time division multiplexing;
• performing a first clear channel assessment (CCA), wherein the CCA occasion occupies a fraction of an OFDM symbol duration;
• a transceiver configured for:
• broadcasting, if CCA is successful, an indication for channel utilization as a channel use beacon signal (CUBS) based on the determination, wherein the CUBS transmission are aligned to a predetermined OFDM symbol boundary;
• performing at least a second CCA before each non-contiguous transmission if receiving a grant for transmission on non-contiguous transmission;
• and
• transmitting the scheduled transmission without transmitting CUBS if the second CCA is successful;
• and
• a memory coupled to the at least one processor for storing data.

A computer program product comprising:

• computer-readable medium storing code for causing at least one computer to:
• determine a plurality of channel utilization resource blocks assigned to a plurality of mobile devices, the assigned determined by time division multiplexing;
• perform a first clear channel assessment (CCA), wherein the CCA occasion occupies a fraction of an OFDM symbol duration;
• broadcast, if CCA is successful, an indication for channel utilization as a channel use beacon signal (CUBS) based on the determination, wherein the CUBS transmission are aligned to a predetermined OFDM symbol boundary;
• perform at least a second CCA before each non-contiguous transmission if receiving a grant for transmission on non-contiguous transmission;
• and
• transmit the scheduled transmission without transmitting CUBS if the second CCA is successful.

A method of wireless communication, comprising:

• selecting, by a base station, one or more downlink subframes for transmission of a joint control channel for variable transmission time interval (TTI) transmission over multiple uplink subframes in an unlicensed carrier;
• setting, by the base station, a size of the joint control channel;
• selecting, by the base station, an aggregation level for association with the joint control channel;
• and
• transmitting, by the base station, the joint control channel over the one or more selected downlink subframes.

An apparatus configured for wireless communication, comprising:

• means for selecting, by a base station, one or more downlink subframes for transmission of a joint control channel for variable transmission time interval (TTI) transmission over multiple uplink subframes in an unlicensed carrier;
• means for setting, by the base station, a size of the joint control channel;
• means for selecting, by the base station, an aggregation level for association with the joint control channel;
• and
• means for transmitting, by the base station, the joint control channel over the one or more selected downlink subframes.

A computer program product for wireless communications in a wireless network, comprising:

• a non-transitory computer-readable medium having program code recorded thereon, the program code including:
• program code for causing a computer to select, by a base station, one or more downlink subframes for transmission of a joint control channel for variable transmission time interval (TTI) transmission over multiple uplink subframes in an unlicensed carrier;
• program code for causing the computer to set, by the base station, a size of the joint control channel;
• program code for causing the computer to select, by the base station, an aggregation level for association with the joint control channel;
• and
• program code for causing the computer to transmit, by the base station, the joint control channel over the one or more selected downlink subframes.

An apparatus configured for wireless communication, the apparatus comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor,
• wherein the at least one processor is configured:
• to select, by a base station, one or more downlink subframes for transmission of a joint control channel for variable transmission time interval (TTI) transmission over multiple uplink subframes in an unlicensed carrier;
• to set, by the base station, a size of the joint control channel;
• to select, by the base station, an aggregation level for association with the joint control channel;
• and
• to transmit, by the base station, the joint control channel over the one or more selected downlink subframes.

A computer program product for wireless communications in a wireless network, comprising:

• a non-transitory computer-readable medium having program code recorded thereon, the program code including:
• program code for causing a computer to receive, by a user equipment (UE) from a base station over one or more downlink subframes, a joint control channel for variable transmission time interval (TTI) transmission over multiple uplink subframes in an unlicensed carrier;
• and
• program code for causing the computer to transmit, by the UE the variable TTI transmission over the multiple uplink subframes according to the joint control channel.

An apparatus configured for wireless communication, the apparatus comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor,
• wherein the at least one processor is configured:
• to receive, by a user equipment (UE) from a base station over one or more downlink subframes, a joint control channel for variable transmission time interval (TTI) transmission over multiple uplink subframes in an unlicensed carrier;
• and
• to transmit, by the UE the variable TTI transmission over the multiple uplink subframes according to the joint control channel.

A method of wireless communications, comprising:

• preparing, by a base station, control information indicating a transmission grant to one or more user equipments (UEs) for variable transmission time interval (TTI) transmission over a plurality of uplink subframes in an unlicensed carrier, wherein the preparing includes:
• providing a cross-carrier scheduling indicator identifying one or more uplink component carriers to which the transmission grant applies, wherein the cross-carrier scheduling indicator applies across each of the plurality of uplink subframes;
• providing a resource allocation for the transmission grant;
• providing a modulation and coding scheme and redundancy version for each of the plurality of uplink subframes;
• providing a new data indicator for each of the plurality of uplink subframes scheduled for new uplink transmissions;
• providing a transmission power control signal for the variable TTI transmission;
• providing phase information to maintain orthogonality between layers in the variable TTI transmission;
• providing downlink assignment indications identifying a number of expected acknowledgments from the base station;
• and
• providing one or more channel state requests and one or more sounding reference signal;
• and
• transmitting, by the base station, the control information to the one or more UEs.

An apparatus configured for wireless communications, comprising:

• means for preparing, by a base station, control information indicating a transmission grant to one or more user equipments (UEs) for variable transmission time interval (TTI) transmission over a plurality of uplink subframes in an unlicensed carrier, wherein the means for preparing includes:
• means for providing a cross-carrier scheduling indicator identifying one or more uplink component carriers to which the transmission grant applies, wherein the cross-carrier scheduling indicator applies across each of the plurality of uplink subframes;
• means for providing a resource allocation for the transmission grant;
• means for providing a modulation and coding scheme and redundancy version for each of the plurality of uplink subframes;
• means for providing a new data indicator for each of the plurality of uplink subframes scheduled for new uplink transmissions;
• means for providing a transmission power control signal for the variable TTI transmission;
• means for providing phase information to maintain orthogonality between layers in the variable TTI transmission;
• means for providing downlink assignment indications identifying a number of expected acknowledgments from the base station;
• and
• means for providing one or more channel state requests and one or more sounding reference signal;
• and
• means for transmitting, by the base station, the control information to the one or more UEs.

A computer program product for wireless communications in a wireless network, comprising:

• a non-transitory computer-readable medium having program code recorded thereon, the program code including:
• program code for causing a computer to prepare, by a base station, control information indicating a transmission grant to one or more user equipments (UEs) for variable transmission time interval (TTI) transmission over a plurality of uplink subframes in an unlicensed carrier, wherein the program code for causing the computer to prepare includes program code for causing the computer to:
• provide a cross-carrier scheduling indicator identifying one or more uplink component carriers to which the transmission grant applies, wherein the cross-carrier scheduling indicator applies across each of the plurality of uplink subframes;
• provide a resource allocation for the transmission grant;
• provide a modulation and coding scheme and redundancy version for each of the plurality of uplink subframes;
• provide a new data indicator for each of the plurality of uplink subframes scheduled for new uplink transmissions;
• provide a transmission power control signal for the variable TTI transmission;
• provide phase information to maintain orthogonality between layers in the variable TTI transmission;
• provide downlink assignment indications identifying a number of expected acknowledgments from the base station;
• and
• provide one or more channel state requests and one or more sounding reference signal;
• and
• program code for causing the computer to transmit, by the base station, the control information to the one or more UEs.

An apparatus configured for wireless communication, the apparatus comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor,
• wherein the at least one processor is configured:
• to prepare, by a base station, control information indicating a transmission grant to one or more user equipments (UEs) for variable transmission time interval (TTI) transmission over a plurality of uplink subframes in an unlicensed carrier, wherein the program code for causing the computer to prepare includes program code for causing the computer to:
• provide a cross-carrier scheduling indicator identifying one or more uplink component carriers to which the transmission grant applies, wherein the cross-carrier scheduling indicator applies across each of the plurality of uplink subframes;
• provide a resource allocation for the transmission grant;
• provide a modulation and coding scheme and redundancy version for each of the plurality of uplink subframes;
• provide a new data indicator for each of the plurality of uplink subframes scheduled for new uplink transmissions;
• provide a transmission power control signal for the variable TTI transmission;
• provide phase information to maintain orthogonality between layers in the variable TTI transmission;
• provide downlink assignment indications identifying a number of expected acknowledgments from the base station;
• and
• provide one or more channel state requests and one or more sounding reference signal;
• and
• to transmit, by the base station, the control information to the one or more UEs.

A method of wireless communications, comprising:

• receiving, by a user equipment (UE), control information indicating a transmission grant from a base station for variable transmission time interval (TTI) transmission over a plurality of uplink subframes in an unlicensed carrier;
• preparing, by the UE, for the variable TTI transmission using the control information, wherein the control information includes:
• a cross-carrier scheduling indicator identifying one or more uplink component carriers to which the transmission grant applies, wherein the cross-carrier scheduling indicator applies across each of the plurality of uplink subframes;
• a resource allocation for the transmission grant;
• a modulation and coding scheme and redundancy version for each of the plurality of uplink subframes;
• a new data indicator for each of the plurality of uplink subframes scheduled for new uplink transmissions;
• a transmission power control signal for the variable TTI transmission;
• phase information to maintain orthogonality between layers in the variable TTI transmission;
• downlink assignment indications identifying a number of expected acknowledgments from the base station;
• and
• one or more channel state requests and one or more sounding reference signal;
• and
• transmitting, by the UE, the variable TTI transmissions over the plurality of uplink subframes according to the control information.

An apparatus configured for wireless communications, comprising:

• means for receiving, by a user equipment (UE), control information indicating a transmission grant from a base station for variable transmission time interval (TTI) transmission over a plurality of uplink subframes in an unlicensed carrier;
• means for preparing, by the UE, for the variable TTI transmission using the control information, wherein the control information includes:
• a cross-carrier scheduling indicator identifying one or more uplink component carriers to which the transmission grant applies, wherein the cross-carrier scheduling indicator applies across each of the plurality of uplink subframes;
• a resource allocation for the transmission grant;
• a modulation and coding scheme and redundancy version for each of the plurality of uplink subframes;
• a new data indicator for each of the plurality of uplink subframes scheduled for new uplink transmissions;
• a transmission power control signal for the variable TTI transmission;
• phase information to maintain orthogonality between layers in the variable TTI transmission;
• downlink assignment indications identifying a number of expected acknowledgments from the base station;
• and
• one or more channel state requests and one or more sounding reference signal;
• and
• means for transmitting, by the UE, the variable TTI transmissions over the plurality of uplink subframes according to the control information.

A computer program product for wireless communications in a wireless network, comprising:

• a non-transitory computer-readable medium having program code recorded thereon, the program code including:
• program code for causing a computer to receive, by a user equipment (UE), control information indicating a transmission grant from a base station for variable transmission time interval (TTI) transmission over a plurality of uplink subframes in an unlicensed carrier;
• program code for causing the computer to prepare, by the UE, for the variable TTI transmission using the control information, wherein the control information includes:
• a cross-carrier scheduling indicator identifying one or more uplink component carriers to which the transmission grant applies, wherein the cross-carrier scheduling indicator applies across each of the plurality of uplink subframes;
• a resource allocation for the transmission grant;
• a modulation and coding scheme and redundancy version for each of the plurality of uplink subframes;
• a new data indicator for each of the plurality of uplink subframes scheduled for new uplink transmissions;
• a transmission power control signal for the variable TTI transmission;
• phase information to maintain orthogonality between layers in the variable TTI transmission;
• downlink assignment indications identifying a number of expected acknowledgments from the base station;
• and
• one or more channel state requests and one or more sounding reference signal;
• and
• program code for causing the computer to transmit, by the UE, the variable TTI transmissions over the plurality of uplink subframes according to the control information.

An apparatus configured for wireless communication, the apparatus comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor,
• wherein the at least one processor is configured:
• to receive, by a user equipment (UE), control information indicating a transmission grant from a base station for variable transmission time interval (TTI) transmission over a plurality of uplink subframes in an unlicensed carrier;
• to prepare, by the UE, for the variable TTI transmission using the control information, wherein the control information includes:
• a cross-carrier scheduling indicator identifying one or more uplink component carriers to which the transmission grant applies, wherein the cross-carrier scheduling indicator applies across each of the plurality of uplink subframes;
• a resource allocation for the transmission grant;
• a modulation and coding scheme and redundancy version for each of the plurality of uplink subframes;
• a new data indicator for each of the plurality of uplink subframes scheduled for new uplink transmissions;
• a transmission power control signal for the variable TTI transmission;
• phase information to maintain orthogonality between layers in the variable TTI transmission;
• downlink assignment indications identifying a number of expected acknowledgments from the base station;
• and
• one or more channel state requests and one or more sounding reference signal;
• and
• to transmit, by the UE, the variable TTI transmissions over the plurality of uplink subframes according to the control information.