Patent application number | Description | Published |
20120170556 | COEXISTENCE MECHANISM FOR COLLOCATED WLAN AND WWAN COMMUNICATION DEVICES - Wireless radio devices that communicate in close proximity to each other typically suffer from interference. Such interference between collocated wireless radio devices can lead to degradation in performance of one or both of the wireless radio devices. Functionality can be implemented to coordinate communications of collocated WLAN and WWAN devices to minimize interference between the WLAN device and the WWAN device. The WLAN device can determine a WLAN communication time interval associated with the WLAN device for performing WLAN communication operations and a WWAN communication time interval associated with the WWAN device for performing WWAN communication operations. In response to determining that the WLAN communication time interval is in progress, WLAN communication operations can be performed at the WLAN device. In response to determining that the WLAN communication time interval is not in progress, the WLAN device can delay performing the WLAN communication operations. | 07-05-2012 |
20120170557 | COEXISTENCE MECHANISM FOR COLLOCATED WLAN AND WWAN COMMUNICATION DEVICES - Wireless radio devices that communicate in close proximity to each other typically suffer from interference. Such interference between collocated wireless radio devices can lead to degradation in performance of one or both of the wireless radio devices. Functionality can be implemented to coordinate communications of collocated WLAN and WWAN devices to minimize interference between the WLAN device and the WWAN device. The WWAN device can determine a WWAN communication time interval associated with the WWAN device for performing WWAN communication operations and a WLAN communication time interval associated with the WLAN device for performing WLAN communication operations. In response to determining that the WWAN communication time interval is in progress, WWAN communication operations can be performed at the WWAN device. In response to determining that the WWAN communication time interval is not in progress, the WWAN device can delay performing the WWAN communication operations. | 07-05-2012 |
20120250532 | System and Method for Clear Channel Assessment that Supports Simultaneous Transmission by Multiple Wireless Protocols - System and method for performing clear channel assessment for simultaneous transmission in a device implementing multiple wireless protocols. The system may include first and second wireless protocol circuitry configured to generate first and second signals, respectively, for wireless transmission according to first and second wireless protocols, respectively. A first in-band signal strength threshold and a second in-band signal strength threshold may be maintained by the first wireless protocol circuitry. It may be determined whether the first or second in-band signal strength threshold should be used in performing the clear channel assessment. Clear channel assessment may be performed using the determined in-band signal strength threshold. Performing clear channel assessment may include comparing an ambient signal strength on a channel with the determined in-band signal strength threshold. The first wireless protocol circuitry may be configured to determine whether to wirelessly transmit first signals based on the clear channel assessment. | 10-04-2012 |
20120315919 | THIRD PARTY DEVICE LOCATION ESTIMATION IN WIRELESS COMMUNICATION NETWORKS - A third party device location estimation mechanism can be implemented in a wireless communication network. In one embodiment, a distance between an observing communication device and a reference communication device and a distance between the observing communication device and a target communication device are determined. An exchange of messages between the target communication device and the reference communication device is detected at the observing communication device. Timing information associated with the exchanged messages is determined at the observing communication device. A distance between the target communication device and the reference communication device is determined at the observing communication device based, at least in part, on the distance between the observing communication device and the reference communication device, the distance between the observing communication device and the target communication device, and the timing information associated with the messages exchanged between the target communication device and the reference communication device. | 12-13-2012 |
20120329515 | PER-PACKET RATE AND POWER CONTROL FOR WIRELESS COMMUNICATIONS - A method and device are disclosed for concurrently transmitting a Wi-Fi signal or a Bluetooth signal while receiving a cellular data signal. Upon receiving a request to receive a cellular data signal, the device determines a frequency for which the Wi-Fi signal and/or Bluetooth signal is or will be transmitted. The device then selectively transmits the Wi-Fi and/or Bluetooth signals at reduced power levels based, at least in part, on the frequencies at which the signals are transmitted, so that the Wi-Fi and/or Bluetooth signals can be transmitted without interfering with the cellular data signal being received concurrently. | 12-27-2012 |
20130044612 | AUTONOMOUS WI-FI BASED RANGING DEVICE - A method for autonomous ranging between Wi-Fi enabled mobile devices. A mobile device transmits a probe request to a target mobile device via a wireless channel, and receives a probe response from the target device. The probe response includes identification information associated with the target device. The mobile device uses the identification information to transmit a data packet to the target device via the wireless channel, and without communicating with any wireless access points. The mobile device then receives a reply packet from the target device and determines a distance to the target device based on a round trip time between the transmission of the data packet and the reception of the reply packet. | 02-21-2013 |
20130058316 | COEXISTENCE TIMER MECHANISM FOR WIRELESS COMMUNICATION SYSTEMS - A common coexistence timer can be implemented on collocated or proximate wireless radio devices so that timing information associated with scheduled communications of each of the wireless radio devices is communicated with a common time reference. The coexistence timer provides the common time reference for the wireless radio devices. A transmitting wireless radio device can calculate a difference time associated with the timing information of a scheduled communication and can provide the difference time to a receiving wireless radio device. The receiving wireless radio device can convert the difference time into a time format corresponding to the receiving wireless radio device's local time reference. This can minimize interference between the collocated or proximate wireless radio devices, thus minimizing performance degradation, packet collision, and interference. Moreover, this also can eliminate timing errors due to the wireless radio devices using different timers operating at different frequencies or being synchronized to different crystals. | 03-07-2013 |
20130163643 | SCHEDULED GAIN CONTROL IN COLLOCATED WIRELESS RECEIVERS USING FORWARD TIMED SIGNAL STRENGTH PREDICTIONS - An apparatus is disclosed comprising collocated primary receiver (PR) and a time synchronized receiver (TSR), with a Low Noise Amplifier (LNA) configured by a LNA gain control signal to create a shared amplified signal sent to the PR and the TSR for them to concurrently receive packets. The TSR is configured to generate a timed signal strength prediction signal based on the shared amplified signal and the LNA gain control signal. The primary receiver is configured to generate the LNA gain control signal based, at least in part, on the timed signal strength prediction signal. The PR may include a spread spectrum receiver, and the TSR may include a frequency hopping receiver. | 06-27-2013 |
20130202068 | WIDEBAND DETECTION OF NARROWBAND TRIGGER SIGNALS - A mechanism can be implemented for reducing the power consumption of a wireless radio device in establishing a wireless connection by utilizing a wideband signal to detect a narrowband trigger signal at a potential narrowband trigger frequency. The wireless radio device may operate a wideband receiver to receive an RF signal. Being aware of the potential narrowband trigger frequencies, the wideband receiver may utilize the received RF signal to detect the presence of a narrowband trigger signal at one of the potential narrowband trigger frequencies. | 08-08-2013 |