Abstract: Examples provide a determination circuit and apparatus, a mobile transceiver, a communication device, a method for determining, a computer program and a storage to determine a spatial transmission or reception mode. The determination circuit (10) is configured to determine a spatial transmission or reception mode for a mobile transceiver (100). The determination circuit (10) comprises at least one sensor (12) configured to sense attenuating object information, and a control module (14) configured to determine the spatial transmission or reception mode based on the sensed attenuating object information. The control module (14) is configured to control the spatial transmission or reception mode of the mobile transceiver (100).

Abstract: Methods and apparatus for communicating in a wireless network including apparatus comprising transceiver circuitry to send and receive data in a plurality of time periods, defined by a time division duplex (TDD) time grid, to another entity, the plurality of time periods corresponding to a plurality of orthogonal frequency division multiplexing (OFDM) symbols and the transceiver circuitry being operable to switch from receive mode to transmit mode and/or from transmit mode to receive mode according to a flexible uplink and downlink allocation of the plurality of time periods; and baseband circuitry coupled to the transceiver circuitry to control the transceiver circuitry to switch during a switching interval embedded within a time period corresponding to an OFDM symbol of the plurality of OFDM symbols.

Abstract: A method (300) for determining channel state information includes: receiving (301) a downlink signal, wherein the downlink signal comprises a transport block comprising a plurality of code blocks, each code block of the plurality of code blocks comprising a plurality of resource elements; determining (302) a worst case code block of the plurality of code blocks based on at least one of noise or interference experienced by the plurality of resource elements of the respective code blocks; and determining (303) a metric indicative of a channel state information based on the worst case code block.

Abstract: A method and apparatus for three-dimensional beamforming, which include an estimation of a channel spatial coherence for a beam space of a device based on a plurality of non-precoded reference signals such that the beam space includes a plurality of beam subspaces based on the estimated channel spatial coherence and each of the plurality of beam subspaces include a beam direction representative of a respective beam subspace of the plurality of beam subspaces. Furthermore, a selection a beam subspace of the plurality of beam subspaces based on a channel quality metric of the beam direction that is representative of the beam subspace is included.

Abstract: A method and apparatus for receive beam-forming in an analog domain. A user equipment may perform channel estimation for obtaining a set of channel responses for a plurality of antennas of the UE. The UE may determine a beamforming codeword for receive beamforming based on the set of channel responses. The UE may apply a training codeword to the received signal in analog domain. The training codeword includes phase adjustment coefficients for each antenna and a different training codeword may be applied for each channel observation. The UE may measure a metric for at least one candidate codeword based on the set of channel responses and determine the beamforming codeword based on the metric.

Abstract: Technology for an eNodeB to communicate with a user equipment (UE) using a extended downlink (DL) self-contained frame within a wireless communication network is disclosed. The eNodeB can process data to form an extended downlink (DL) self-contained frame, comprising: a first self-contained subframe including a DL control data, DL data, uplink (UL) control data, and one or more reference symbols; an Mth subframe is located subsequent to the first self-contained subframe, the Mth subframe including one or more resource elements configured for DL data, wherein M is a positive integer greater that is greater than one; and an Nth subframe that is subsequent to the Mth subframe, the Nth subframe including one or more resource elements configured for UL control data. The eNodeB can process the extended DL self-contained frame for transmission to the UE.

Abstract: In various aspects, a Multiple-Input-Multiple-Output (MIMO) antenna array configuration, a wireless communication device, and a method for receiving multiple beamformed signals are described herein. According to at least one aspect, a MIMO antenna array configuration is described to include a plurality of Radio Frequency (RF) chains, a plurality of antenna elements, and a plurality of phase shifters. In some aspects, the antenna elements and phase shifters form a plurality of antenna arrays. The number of antenna arrays is, in at least one aspect, larger than the number of RF chains.

Abstract: A signal processing device includes a determiner configured to determine if a codeword included in a data signal corresponds to a reference codeword included in a first set of reference codewords or a second set of reference codewords; a first estimator configured to estimate a first channel quality metric value for the data signal based on a first channel quality metric, if the codeword corresponds to a reference codeword included in the first set of reference codewords, wherein the first channel quality value is smaller than a reference channel quality metric value for the data signal, wherein the reference channel quality metric value for the data signal results from a channel quality estimation based on a predetermined channel quality metric; and a second estimator configured to estimate a second channel quality metric value for the data signal based on a second channel quality metric, if the codeword corresponds to a reference codeword included in the second set of reference codewords, wherein the second

Abstract: A class of dynamic switching mechanisms is used with multiple HARQ block sizes to reduce HARQ retransmission overhead while limiting the increase of HARQ ACK feedback overhead. Per-code block link adaptation can be used to support multiple MCSs for a single user in each subframe with fine time-frequency granularity, with low-bandwidth signaling overhead and without a complete dependency on reference signal (RS) structure.

Abstract: Examples provide a determination circuit and apparatus, a mobile transceiver, a communication device, a method for determining, a computer program and a storage to determine a spatial transmission or reception mode. The determination circuit (10) is configured to determine a spatial transmission or reception mode for a mobile transceiver (100). The determination circuit (10) comprises at least one sensor (12) configured to sense attenuating object information, and a control module (14) configured to determine the spatial transmission or reception mode based on the sensed attenuating object information. The control module (14) is configured to control the spatial transmission or reception mode of the mobile transceiver (100).

Abstract: A mobile communication device is described comprising a receiver configured to receive, for each of a plurality of transmit beam directions, a reference signal transmitted based on the transmit beam direction, wherein each transmit beam direction has at least one allowable precoder, a determiner configured to determine, for each transmit beam direction, a reception quality of the reference signal transmitted based on the transmit beam direction, a preselector configured to preselect, from the plurality of transmit beam directions, a subset of transmit beam directions based on a comparison of the determined reception qualities, an evaluator configured to determine, for each transmit beam direction of the subset, an evaluation of the performance of the allowable precoders of the transmit beam direction, a selector configured to select, from the subset, a beam direction for communication, based on the evaluations and a controller configured to establish communications based on the selected beam direction.

Abstract: A method (200) of determining mutual information of a composite receive signal, the composite receive signal comprising a reference signal and a data signal, includes the following acts: estimating (201) a base metric of the composite receive signal based on the reference signal, the base metric being indicative of a channel quality; and determining (202) the mutual information based on the base metric and the data signal.

Abstract: A beam formation matching for communications between a receiver (201) and transmitter (101) in a multiple beam Multiple Input Multiple Output (MIMO) system (100) is disclosed.

Abstract: Methods and apparatus for communicating in a wireless network including apparatus comprising transceiver circuitry to send and receive data in a plurality of time periods, defined by a time division duplex (TDD) time grid, to another entity, the plurality of time periods corresponding to a plurality of orthogonal frequency division multiplexing (OFDM) symbols and the transceiver circuitry being operable to switch from receive mode to transmit mode and/or from transmit mode to receive mode according to a flexible uplink and downlink allocation of the plurality of time periods; and baseband circuitry coupled to the transceiver circuitry to control the transceiver circuitry to switch during a switching interval embedded within a time period corresponding to an OFDM symbol of the plurality of OFDM symbols.

Abstract: An enhanced Node B (eNB) for precoding is generally described. In some embodiments, a first precoding-matrix indicator (PMI) and a second PMI is received on an uplink channel from user equipment (UE). Symbols for multiple-input multiple output (MIMO) beamforming may be precoded by the eNB using a precoder matrix recommended by the first and second PMIs, for a MIMO downlink orthogonal frequency division multiple access (OFDMA) transmission. The first PMI and the second PMI are calculated by selecting a representative codeword that is indexed by i1 and i2 for a plurality of 2TX constituent beams, the 2TX constituent beam that provides the best system evaluation metric. The i1 index for wideband and the i2 index for each subband are identified from the defined 2TX constituent beam.

Abstract: An apparatus of a user equipment (UE) may include memory and processing circuitry coupled to the memory. The processing circuitry may be configured to estimate a communication channel for a multi-carrier signal based on a received reference signal, the multi-carrier signal aggregating a plurality of component carriers. During a transmission time interval of the multi-carrier signal, the UE can perform a global search over a beam search space to obtain a beam index recommendation for a component carrier of the plurality of component carriers. The beam index recommendation corresponds to a maximized channel quality metric of the estimated communication channel and is indicative of a beam grid within the beam search space. The UE can perform a localized search of a subset of the beam search space to obtain a second beam index recommendation for a second component carrier of the plurality of component carriers.

Abstract: A mobile communication device is described comprising a receiver configured to receive, for each of a plurality of transmit beam directions, a reference signal transmitted based on the transmit beam direction, wherein each transmit beam direction has at least one allowable precoder, a determiner configured to determine, for each transmit beam direction, a reception quality of the reference signal transmitted based on the transmit beam direction, a preselector configured to preselect, from the plurality of transmit beam directions, a subset of transmit beam directions based on a comparison of the determined reception qualities, an evaluator configured to determine, for each transmit beam direction of the subset, an evaluation of the performance of the allowable precoders of the transmit beam direction, a selector configured to select, from the subset, a beam direction for communication, based on the evaluations and a controller configured to establish communications based on the selected beam direction.

Abstract: Technology for an eNodeB to communicate with a user equipment (UE) using a extended downlink (DL) self-contained frame within a wireless communication network is disclosed. The eNodeB can process data to form an extended downlink (DL) self-contained frame, comprising: a first self-contained subframe including a DL control data, DL data, uplink (UL) control data, and one or more reference symbols; an Mth subframe is located subsequent to the first self-contained subframe, the Mth subframe including one or more resource elements configured for DL data, wherein M is a positive integer greater that is greater than one; and an Nth subframe that is subsequent to the Mth subframe, the Nth subframe including one or more resource elements configured for UL control data. The eNodeB can process the extended DL self-contained frame for transmission to the UE.

Abstract: A method (300) for determining channel state information includes: receiving (301) a downlink signal, wherein the downlink signal comprises a transport block comprising a plurality of code blocks, each code block of the plurality of code blocks comprising a plurality of resource elements; determining (302) a worst case code block of the plurality of code blocks based on at least one of noise or interference experienced by the plurality of resource elements of the respective code blocks; and determining (303) a metric indicative of a channel state information based on the worst case code block.

Abstract: An apparatus of a user equipment (UE) may include memory and processing circuitry coupled to the memory. The processing circuitry may be configured to estimate a communication channel for a multi-carrier signal based on a received reference signal, the multi-carrier signal aggregating a plurality of component carriers. During a transmission time interval of the multi-carrier signal, the UE can perform a global search over a beam search space to obtain a beam index recommendation for a component carrier of the plurality of component carriers. The beam index recommendation corresponds to a maximized channel quality metric of the estimated communication channel and is indicative of a beam grid within the beam search space. The UE can perform a localized search of a subset of the beam search space to obtain a second beam index recommendation for a second component carrier of the plurality of component carriers.