Abstract: The present invention provides, in part, compounds of Formula I: and pharmaceutically acceptable salts thereof; processes for the preparation of; intermediates used in the preparation of; and compositions containing such compounds or salts, and their uses for treating D1-mediated (or D1-associated) disorders including, e.g., schizophrenia (e.g., its cognitive and negative symptoms), cognitive impairment (e.g.

Abstract: This disclosure provides methods, devices, and systems for selecting antenna power levels based on polarization diversity. For example, a wireless communication device can determine first and second transmission power levels for a first set of one or more antennas and a second set of one or more antennas, respectively, based on a polarization diversity setting for a wireless communication device that is based on a first orientation of the first set of antenna(s) being orthogonal to a second orientation of the second set of antenna(s). The wireless communication device can transmit, to a target device, first signals at the first transmission power levels using the first set of antenna(s) and second signals at the second transmission power levels using the second set of antenna(s). The first signals are cross-polarized from the second signals based on the first orientation being orthogonal to the second orientation.

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for managing wireless local area network (WLAN) density. The WLAN density is managed to limit how many APs can utilize a first portion of a first frequency band in a geographical area. A limit of APs may be based on an estimated amount of interference that would be caused by the APs to an incumbent system that also uses the first portion of the frequency band. The WLAN density control may prevent the estimated amount of interference caused by APs in a geographical area from exceeding a threshold interference level based on the presence of the incumbent system. WLAN density control may involve the AP configuration of a first AP or may involve the density of client devices associated with one or more APs in the geographical area.

Abstract: Method and systems are disclosed for qualifying a wireless device as frequency hopping device. In some aspects, an access point (AP) may determine a frequency hopping pattern for the wireless device, and then allocate a sequence of unique resource units to the wireless device based on the frequency hopping pattern. Each of the unique resource units include a different set of frequency subcarriers. The AP may receive a series of uplink orthogonal frequency-division multiple access (OFDMA) transmissions from the wireless device on the allocated sequence of unique resource units.

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for managing wireless local area network (WLAN) density. The WLAN density is managed to limit how many APs can utilize a first portion of a first frequency band in a geographical area. A limit of APs may be based on an estimated amount of interference that would be caused by the APs to an incumbent system that also uses the first portion of the frequency band. The WLAN density control may prevent the estimated amount of interference caused by APs in a geographical area from exceeding a threshold interference level based on the presence of the incumbent system. WLAN density control may involve the AP configuration of a first AP or may involve the density of client devices associated with one or more APs in the geographical area.

Abstract: Techniques are described for wireless communication at a wireless communication device. One method includes determining an availability of a sub-band of a shared radio frequency spectrum band during a first portion of a distributed channel availability check (CAC); receiving at least one indication that the sub-band is available during remaining portions of the distributed CAC; and communicating over the sub-band based at least in part on determining the sub-band is available during the first portion of the distributed CAC and the at least one indication that the sub-band is available during remaining portions of the distributed CAC.

Abstract: This disclosure may prevent unauthorized modification of country code information stored in a wireless device including a high-level operating system (HLOS) and a radio subsystem including at least a first radio and a second radio. The first radio may receive first country code information from the HLOS, and may receive a message from the second radio. The message may include second country code information and a digital signature. The first radio may verify the message based on the digital signature, and may determine a validity of the first country code information based on a comparison with the second country code information. Transmission parameters of the wireless device may be configured using either the first or second country code information in response to the verifying.

Abstract: A method and apparatus are disclosed for transmitting, by a wireless device, wireless communication signals in the presence of one or more radar signals. For at least some embodiments, a wireless communication channel may be divided into a plurality of resource units. When a radar signal is detected within one or more of the resource units, wireless transmissions may be suppressed within those resource units. The resource units without radar signals may be used for wireless transmissions. In this manner, an entire wireless channel need not be vacated when a radar signal is detected, thereby preserving at least some communication bandwidth of the wireless communication channel.

Abstract: Methods, systems, and apparatuses are described for adaptive dwell time for scan procedures. A wireless station (STA) may identify a scan period during which a passive scan procedure is performed on a first channel. The STA may analyze a channel congestion metric during at least a portion of the scan period. The STA may transition from the passive scan procedure to an active scan procedure on the first channel during the scan period based at least in part on the analyzed channel congestion metric.

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus is configured to determine whether radar signals are present on one or more channels. The apparatus is configured to transmit a channel feedback report that includes channel information for each of the one or more channels based on the determination of whether radar signals are present on the one or more channels. The channel information for each of the one or more channels includes at least one of a time at which radar signal detection was attempted, a frequency range of a detected radar signal, a set of radar signal characteristics, a received radar vector, a geographical location of the wireless device when radar signal detection was attempted, or an indication of wireless activity.

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus is configured to determine device information associated with the apparatus. The device information identifies at least one channel on which the apparatus is communicating. The at least one channel is a WLAN channel and/or a DSRC channel. The apparatus is configured to transmit a feedback report that includes the device information over a WAN connection.

Abstract: Techniques are described for wireless communication at a wireless communication device. One method includes determining an availability of a sub-band of a shared radio frequency spectrum band during a first portion of a distributed channel availability check (CAC); receiving at least one indication that the sub-band is available during remaining portions of the distributed CAC; and communicating over the sub-band based at least in part on determining the sub-band is available during the first portion of the distributed CAC and the at least one indication that the sub-band is available during remaining portions of the distributed CAC.

Abstract: Method and systems are disclosed for qualifying a wireless device as frequency hopping device. In some aspects, an access point (AP) may determine a frequency hopping pattern for the wireless device, and then allocate a sequence of unique resource units to the wireless device based on the frequency hopping pattern. Each of the unique resource units include a different set of frequency subcarriers. The AP may receive a series of uplink orthogonal frequency-division multiple access (OFDMA) transmissions from the wireless device on the allocated sequence of unique resource units.

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus is configured to determine whether radar signals are present on one or more channels. The apparatus is configured to transmit a channel feedback report that includes channel information for each of the one or more channels based on the determination of whether radar signals are present on the one or more channels. The channel information for each of the one or more channels includes at least one of a time at which radar signal detection was attempted, a frequency range of a detected radar signal, a set of radar signal characteristics, a received radar vector, a geographical location of the wireless device when radar signal detection was attempted, or an indication of wireless activity.

Abstract: Methods, systems, and apparatuses are described for adaptive dwell time for scan procedures. A wireless station (STA) may identify a scan period during which a passive scan procedure is performed on a first channel. The STA may analyze a channel congestion metric during at least a portion of the scan period. The STA may transition from the passive scan procedure to an active scan procedure on the first channel during the scan period based at least in part on the analyzed channel congestion metric.

Abstract: Methods, systems, and apparatuses are described for wireless communications. More particularly, an access point may assign a channel weighting factor to each channel in a candidate channel list. The access point may identify an attribute of a radar signal detected on a current operating channel. The access point may adjust, based at least in part on the identified attribute, the channel weighting factor assigned to a channel of the candidate channel list adjacent to the current operating channel. The access point may select a new operating channel from the candidate channel list based at least in part on the assigned channel weighting factor.

Abstract: Systems and methods are disclosed for returning RF components which exhibit a mismatch with a coupled load. A tuning circuit may be coupled to a signal path of the RF component, wherein the tuning circuit includes a plurality of loads, a switching element associated with each load, wherein each switching element brings the associated load into and out of the signal path, a control line for each switching element, and a phase stage configured to introduce a phase shift, such as 90°, between a first subset of the loads and a second subset of the loads. The disclosure also includes routines for establishing optimum settings for the tuning circuit.

Abstract: Systems and methods are disclosed for returning RF components which exhibit a mismatch with a coupled load. A tuning circuit may be coupled to a signal path of the RF component, wherein the tuning circuit includes a plurality of loads, a switching element associated with each load, wherein each switching element brings the associated load into and out of the signal path, a control line for each switching element, and a phase stage configured to introduce a phase shift, such as 90°, between a first subset of the loads and a second subset of the loads. The disclosure also includes routines for establishing optimum settings for the tuning circuit.