Abstract: A method and apparatus provide reception of control signaling in a wireless communication network. A first device can communicate with a second device using serving cell operating on an unlicensed carrier. A preamble transmission can be sent to the second device in a first set of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol starting with a first orthogonal frequency division multiplexing symbol in a subframe sent on the serving cell. The first OFDM symbol can have a first cyclic prefix. A second OFDM symbol can be in the subframe to the second device such that the second OFDM symbol immediately follows the first set of OFDM symbols. Control information can be sent in a second set of OFDM symbols beginning with the second OFDM symbol to the second device. The second set of OFDM symbols can have a second cyclic prefix. The duration of the first cyclic prefix can be larger than the duration of the second cyclic prefix.

Abstract: A method and apparatus provide for low latency transmissions. A resource assignment can be received. A first set of time-frequency resources in a subframe can be determined from the resource assignment. A second set of time-frequency resources in the subframe can be determined. The second set of time-frequency resources can be for a low latency data transmission. The second set of time-frequency resources can overlap with at least a portion of the first set of time-frequency resources. A regular latency data transmission in the subframe can be decoded based on the determined first and second set of time-frequency resources. The regular latency transmission can have a longer latency than the low latency transmission.

Abstract: A method and apparatus reduce latency of Long Term Evolution (LTE) uplink transmissions. Configuration information regarding a Downlink Control Information (DCI) message for a Physical Uplink Shared Channel (PUSCH) transmission can be acquired. The DCI message can be received on a Physical Downlink Control Channel (PDCCH) in a first subframe. The DCI message can indicate a plurality of resource assignments in a second subframe for an uplink carrier from which a User Equipment (UE) can select one resource assignment for transmission on the uplink carrier. The DCI message can be Cyclic Redundancy Check (CRC) scrambled by a Radio Network Temporary Identifier (RNTI) that is indicated via higher layers that are higher than a physical layer. A resource assignment can be selected from the plurality of resource assignments using a selection criterion. A data packet can be transmitted on the PUSCH in a resource of the selected resource assignment in the second subframe on the uplink carrier.

Abstract: A first user equipment (UE) and a second UE communicate with a network element (e.g., an eNB) over a carrier (e.g., an uplink or downlink cellular carrier). The first and second UEs also engage in D2D communication using resources of the carrier that have been allocated to them by the network entity. Using the allocated resources, the first and second UEs communicate using a subframe that has a first set of symbols in during which the first UE transmits, a second set of symbols during which the second UE transmits, and a guard interval between the first and second UEs.

Abstract: A method and apparatus reduce latency of Long Term Evolution (LTE) uplink transmissions. A Downlink Control Information (DCI) message can be transmitted in a first subframe. The DCI message can indicate a resource assignment and a modulation and coding scheme and indicating a plurality of cyclic shifts from which a User Equipment (UE) may select one cyclic shift for transmission in a second subframe on an uplink carrier. A data packet can be received on a Physical Uplink Shared Channel (PUSCH) in a resource indicated by the resource assignment and modulation and coding scheme, and using a Demodulation Reference Signal (DMRS) based on a selected cyclic shift in the second subframe on the uplink carrier.

Abstract: This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message.

Abstract: A UE can receive Zero Power Channel State Information Reference Signal (ZP-CSI-RS) configuration information for an aperiodic ZP-CSI-RS of a serving cell. The UE can receive Downlink Control Information (DCI) on a physical control channel in a subframe of the serving cell. The DCI can indicate whether a Physical Downlink Shared Channel (PDSCH) of the UE in the subframe of the serving cell is rate-matched around resource elements indicated by the ZP-CSI-RS configuration information. The UE can decode the PDSCH in the subframe of the serving cell based on rate-matching around the resource elements indicated by the ZP-CSI-RS configuration when the DCI indicates the PDSCH of the UE is rate-matched around the resource elements indicated by the ZP-CSI-RS configuration.

Abstract: This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message.

Abstract: A method and apparatus provide for low latency transmissions. A higher layer configuration can be received at a device. The higher layer configuration can be higher than a physical layer configuration. The higher layer configuration can indicate configuring the device with a low latency configuration for a low latency transmission mode in addition to a regular latency configuration for a regular latency transmission mode. The low latency transmission mode can have a shorter latency than the regular latency transmission mode. A packet can be received based on one of the low latency configuration and the regular latency transmission mode in a subframe n. A feedback packet can be transmitted in a following subframe n+p, where p<4 when the received packet is based on the low latency configuration. The following subframe n+p can be the pth subframe from the subframe n.

Abstract: A method and apparatus provide for low latency transmissions. A higher layer configuration message can be received. A first region of a subframe for receiving data packets can be determined based on the higher layer configuration message. The first region can include a first set of resource elements. The first set of resource elements can be a subset of a second set of resource elements in the first region. The first region can be used for control channel monitoring. The data packets can be mapped to at least one resource element of the first set of resource elements. The first region can be monitored by attempting to decode the data packets in the first region. Data in the data packet in the first region can be decoded.

Abstract: A method and apparatus provide for low latency transmissions. A higher layer configuration message can be received that indicates a set of resource blocks for receiving data packets in at least one symbol of a subframe. An attempt can be made to decode a data packet in a first set of resource elements within the set of resource blocks. The first set of resource elements can be in the at least one symbol of the subframe. An attempt can be made to decode the data packet in at least a second set of resource elements within the set of resource blocks. The second set of resource elements can be in the at least one symbol of the subframe. The second set of resource elements can include at least one resource element that is not in the first set of resource elements. The data packet in one of the first set of resource elements and the second set of resource elements can be successfully decoded. A data payload of the decoded data packet can be delivered to an application layer.

Abstract: A method and apparatus provide for low latency transmissions. A first control channel can be transmitted in a first temporal portion of a subframe. The subframe can include a plurality of OFDM symbols in a time domain and a plurality of subcarriers in a frequency domain. The first control channel can occupy a first portion of subcarriers less than the plurality of subcarriers. The first control channel can assign first data resources only in the first temporal portion of the subframe. A second control channel can be transmitted in a second temporal portion of a subframe. The first temporal portion can occupy at least one different first OFDM symbol in the subframe from the second temporal portion. The second temporal portion can occupy at least one different second OFDM symbol in the subframe from the first temporal portion. The second control channel can occupy a second portion of subcarriers that is less than the plurality of subcarriers.

Abstract: A method and apparatus provide reception of control signaling in a wireless communication network. A preamble transmission can be detected from a second device in a first set of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol starting with a first OFDM symbol in a subframe received on a secondary serving cell operating on an unlicensed carrier, the first OFDM symbol having a first Cyclic Prefix (CP). A second OFDM symbol in the subframe can be determined such that the second OFDM symbol immediately follows the first set of OFDM symbols. Downlink Control Information (DCI) containing a Physical Downlink Shared Channel (PDSCH) resource assignment can be decoded in a second set of OFDM symbols beginning with the second OFDM symbol, the second set of OFDM symbols having a second CP. The duration of the first CP is larger than the duration of the second CP.

Abstract: This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message.

Abstract: User equipment determines a transport block size column indicator representative of a number of resource blocks based on a number of allocated resource blocks, an adjustment factor, and a limiting factor. The transport block size column indicator is determined by applying the adjustment factor to the number of allocated resource blocks and comparing a result of applying the adjustment factor to the number of allocated resource blocks to the limiting factor. The transport block size column indicator is selected as either the result or the limiting factor as the based on the comparison.

Abstract: In a method of detecting a transmission bandwidth configuration, the method includes monitoring (610) a first set of control channel candidates in a subframe (424) using a first transmission bandwidth and includes monitoring (612) a second set of control channel candidates using a second transmission bandwidth. The method also includes detecting (614) a control channel (428) in one of the first set of control channel candidates and the second set of control channel candidates and includes determining (616) a transmission bandwidth (421, 423) configuration for the subframe based on the detected control channel of one of the first set of control candidates and the second set of control channel candidates.

Abstract: A method and apparatus reduce latency of Long Term Evolution (LTE) uplink transmissions. Configuration information regarding a Downlink Control Information (DCI) message for a Physical Uplink Shared Channel (PUSCH) transmission can be acquired. The DCI message can be received on a Physical Downlink Control Channel (PDCCH) in a first subframe. The DCI message can indicate a plurality of resource assignments in a second subframe for an uplink carrier from which a User Equipment (UE) can select one resource assignment for transmission on the uplink carrier. The DCI message can be Cyclic Redundancy Check (CRC) scrambled by a Radio Network Temporary Identifier (RNTI) that is indicated via higher layers that are higher than a physical layer. A resource assignment can be selected from the plurality of resource assignments using a selection criterion. A data packet can be transmitted on the PUSCH in a resource of the selected resource assignment in the second subframe on the uplink carrier.

Abstract: A method and apparatus reduce latency of Long Term Evolution (LTE) uplink transmissions. An indication can be acquired, where the indication can indicate a set of frequency domain resource blocks for possible Physical Uplink Shared Channel (PUSCH) transmission in an uplink subframe. A subset of resource blocks can be selected from the set of frequency domain resource blocks for possible PUSCH transmission based on a selection criterion. The selection criterion can use at least a resource set size acquired from the indication, can use a modulo function, and can use an identifier associated with the User Equipment (UE). The PUSCH can be transmitted in the selected subset of resource blocks in the uplink subframe.

Abstract: A method and apparatus reduce latency of Long Term Evolution (LTE) uplink transmissions. A Downlink Control Information (DCI) message can be received in a first subframe. The DCI message can indicate a resource assignment and a modulation and coding scheme and can indicate a plurality of cyclic shifts from which a User Equipment (UE) may select one cyclic shift for transmission in a second subframe for an uplink carrier. A cyclic shift can be selected from the plurality of indicated cyclic shifts based on a selection criterion. A data packet can be transmitted on a Physical Uplink Shared Channel (PUSCH) in a resource indicated by the resource assignment and modulation and coding scheme using a Demodulation Reference Signal (DMRS) based on the selected cyclic shift in the second subframe on the uplink carrier.

Abstract: User equipment determines a transport block size column indicator representative of a number of resource blocks based on a number of allocated resource blocks, an adjustment factor, and a limiting factor. The transport block size column indicator is determined by applying the adjustment factor to the number of allocated resource blocks and comparing a result of applying the adjustment factor to the number of allocated resource blocks to the limiting factor. The transport block size column indicator is selected as either the result or the limiting factor based on the comparison.