Abstract:
Uplink control information may not be transmitted if a CCA of the unlicensed SCC fails. Thus, the present disclosure provide a solution in which uplink control information for an unlicensed SCC may still be transmitted when a CCA of the unlicensed SCC fails. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus generates uplink control information. The apparatus also attempts to perform a CCA of a carrier for an uplink burst. In addition, the apparatus determines a failure of the CCA. In addition, the apparatus performs one of the following when it is determined that the CCA has failed: transmitting the PUCCH transmission on the carrier in a later subframe of the uplink burst, transmitting the PUCCH transmission on the carrier in a different uplink burst, or transmitting the PUCCH transmission on a different carrier.
Abstract:
In order to provide a generic access rule, the present disclosure proposes a new potential set of adaptivity rules for LBE based on LBT. The generic access rule of the present disclosure provides LTE-U and Wi-Fi coexistence and DL/UL coexistence in both LTE-U and Wi-Fi. The apparatus receives, from the first master device, a resource allocation for communicating with the second master device. The apparatus also determines a type of CCA procedure to perform before communicating with the second master device on an unlicensed channel. The apparatus further performs a CCA procedure to obtain a transmission opportunity based on the determining, the CCA procedure being one of an ICCA procedure or an ECCA procedure. In addition, the apparatus transmit data to the second master device in accordance with the resource allocation on the unlicensed channel when the transmission opportunity is obtained.
Abstract:
Channel availability is uncertain when employing an unlicensed carrier. In particular, it may be difficult to schedule grants in advance because of the uncertainty associated with future channels availability. Accordingly, scheduling UL and/or DL grants exclusively using self-scheduling or exclusively using cross-carrier scheduling for utilizing an unlicensed carrier may result in wasted communication opportunities. Aspects disclosed herein whereby an eNB may use licensed and unlicensed carriers to communicate downlink grants and uplink grants for an unlicensed carrier to a UE. In one aspect, the eNB may use an unlicensed carrier to communicate downlink grants for downlink communication on the unlicensed carrier, and may use a licensed carrier to communicate uplink grants for uplink communication on the unlicensed carrier.
Abstract:
Enhanced carrier aggregation may require development of mechanisms to enable carrier aggregation for an increased number of component carriers. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus for wireless communication are provided. The apparatus may be a user equipment. The apparatus may receive, with an uplink grant, a request for channel state information. The apparatus determines the number of bits comprising the request. The determined number of bits may be based on or associated with the number of serving cells configured for the apparatus. The apparatus reports the channel state information in response to the request based on information in the determined number of bits.
Abstract:
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a second base station. The second base station receives a measurement report and a cell identifier, associated with a first base station, from a UE. The second base station determines, based on the cell identifier, that the first base station is in a dormant state. The second base station sends an activation request to the first base station, based on the measurement report, to prompt the first base station to transition from the dormant state to an active state. The second base station further includes handing off the UE to the first base station.
Abstract:
The present disclosure provides methods and apparatuses for multi-carrier transmissions over adjacent channels that reduce self-jamming due to asymmetric interference. In an aspect, a large bandwidth load-base equipment (LBE) carrier may be provided such that CCA is performed jointly over the entire bandwidth. In another aspect, additional CCA timeslots may be used to synchronize the two carriers. In a further aspect, an extended CCA may be performed on a primary unlicensed carrier while a simple CCA may be performed on a secondary unlicensed carrier. In yet another aspect, LBE may be deployed on some carriers while frame-base equipment (FBE) may be deployed on other carriers.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a user equipment that receives interference cancelation information from a base station. Various aspects are described for employing interference cancelation information perform interference suppression in the presence of interference associated with different component carriers when employing carrier aggregation, small cell discovery signals, variations in data channel transmissions associated with certain transmission modes, and higher order QAM rates.
Abstract:
Aspects described herein relate to scheduling data for transmission over a plurality of component carriers. A base station can determine to increase bandwidth utilization over at least one component carrier of a plurality of component carriers assigned to a plurality of user equipments (UE). The base station can assign a plurality of resource blocks over the at least one component carrier to one or more fictitious UE identifiers and transmit data signals over the plurality of resource blocks to increase bandwidth utilization over the at least one component carrier. One or more network nodes may determine the one or more fictitious UE identifiers and may determine related resource assignment for canceling interference from data transmitted for the fictitious UE identifiers, performing channel estimation, etc.
Abstract:
Certain aspects of the disclosure relate to performing cross-subframe control channel signaling for wireless communications. A method may be provided for signaling downlink control channel resource allocations and/or physical control format indications in a subframe different from the subframe in which a downlink data transmission may be performed. In one aspect, the method may include transmitting PDCCH and/or PCFICH during a first subframe to allocate resources for a PDSCH during a second subframe and transmitting the PDSCH during the second subframe.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus configures a radio frame with a subframe configuration based on a restriction, the radio frame being part of a sequence of a plurality of radio frames. The restriction excludes the radio frame from conforming to a set of subframe configurations based on at least one of a position of the radio frame within the sequence of radio frames or a type of information to be transmitted or received in the radio frame. The apparatus then communicates with a user equipment (UE) during the radio frame based on the subframe configuration.