Abstract:
Performance is improved in certain M2M devices by suppressing explicit network registration or attachment. The described techniques may be used, for example, by M2M devices that periodically or occasionally transmit event data using wireless communication networks without needing to receive periodic or on-demand communications from the network for regular operation. In some embodiments, an M2M device may continue to monitor pilot channels of available wireless networks, select a particular network for communication from among the available wireless networks, and monitor system information for the selected network without registering on the selected network. The M2M device may suppress explicit registration based on one or more explicit registration triggers associated with the selected network. The M2M device may be implicitly registered as part of the network access transmitting the captured or measured event data to the selected network. Other aspects, embodiments, and features are also claimed and described.
Abstract:
Aspects of the present disclosure are directed to an apparatus and methods capable of pre-correcting reacquisition slew of pilot signal timing when a mobile device operates in a slotted mode or discontinuous reception (DRX) mode. In one aspect, a mobile device is operated in slotted mode. The mobile device wakes up to perform a pilot reacquisition corresponding to a slotted mode and detects a slew of a pilot timing relative to a pilot reference timing. The mobile device adjusts a subsequent pilot reference timing by an amount corresponding to the detected slew, to be utilized during a subsequent wake-up cycle. The mobile device returns to a sleep state to wait for the subsequent wake-up cycle. Other aspects, embodiments, and features are also claimed and described.
Abstract:
Techniques for determining if it is safe for a mobile device to transition directly from a traffic session to a paging mode and for avoiding network re-synchronization procedures in stationary M2M devices are disclosed. It may be safe for direct transition if before-call and in-call network parameters correspond. If safe, the mobile device may transition from the traffic session directly to the paging mode to begin immediately monitoring the paging channel. In stationary M2M devices, paging information is stored before the traffic session and, once the traffic session is complete, the M2M device may be configured to receive paging messaging based on the stored paging information. The M2M device may also store system access information and confirm the validity of the information before returning to the sleep state. The stationary M2M device avoids network re-synchronization procedures. Other aspects, embodiments, and features are also claimed and described.
Abstract:
Various features and aspects of the present disclosure are adapted to facilitate improved reception of page messages at an access terminal operable in a wireless communication system. When the access terminal is in a region where two or more cells overlap, if the access terminal is moving away from the coverage area of an active cell and moving towards the coverage area of a neighbor cell, the access terminal may miss an incoming page message transmitted from its serving cell. Thus, the access terminal may dedicate fingers of a rake receiver to listen to paging information transmitted from one or more neighbor cells, decoding this information if a page decoding operation corresponding to the active cell fails. Other aspects, embodiments, and features are also claimed and described.
Abstract:
This disclosure provides systems, methods, and apparatus for receiving paging messages in fast fading scenarios. In one aspect, a method of demodulating a paging message during an assigned time slot by a wireless communications apparatus operating in an idle mode is provided. The method includes determining, in anticipation of the assigned time slot, an expected time position corresponding to a path of a pilot signal having a greater signal strength relative to other pilot signals. The method further includes assigning a first demodulation element to demodulate the pilot signal with reference to the expected time position and assigning a second demodulation element to demodulate the pilot signal with reference to a time offset from the expected time position. Other aspects, embodiments, and features are also claimed and described.
Abstract:
Performance is improved in certain M2M devices by suppressing explicit network registration or attachment. The described techniques may be used, for example, by M2M devices that periodically or occasionally transmit event data using wireless communication networks without needing to receive periodic or on-demand communications from the network for regular operation. In some embodiments, an M2M device may continue to monitor pilot channels of available wireless networks, select a particular network for communication from among the available wireless networks, and monitor system information for the selected network without registering on the selected network. The M2M device may suppress explicit registration based on one or more explicit registration triggers associated with the selected network. The M2M device may be implicitly registered as part of the network access transmitting the captured or measured event data to the selected network. Other aspects, embodiments, and features are also claimed and described.
Abstract:
This disclosure provides systems, methods, and apparatus for receiving paging messages in fast fading scenarios. In one aspect, a method of demodulating a paging message during an assigned time slot by a wireless communications apparatus operating in an idle mode is provided. The method includes determining, in anticipation of the assigned time slot, an expected time position corresponding to a path of a pilot signal having a greater signal strength relative to other pilot signals. The method further includes assigning a first demodulation element to demodulate the pilot signal with reference to the expected time position and assigning a second demodulation element to demodulate the pilot signal with reference to a time offset from the expected time position. Other aspects, embodiments, and features are also claimed and described.
Abstract:
Aspects of the present disclosure are directed to an apparatus and methods capable of pre-correcting reacquisition slew of pilot signal timing when a mobile device operates in a slotted mode or discontinuous reception (DRX) mode. In one aspect, a mobile device is operated in slotted mode. The mobile device wakes up to perform a pilot reacquisition corresponding to a slotted mode and detects a slew of a pilot timing relative to a pilot reference timing. The mobile device adjusts a subsequent pilot reference timing by an amount corresponding to the detected slew, to be utilized during a subsequent wake-up cycle. The mobile device returns to a sleep state to wait for the subsequent wake-up cycle. Other aspects, embodiments, and features are also claimed and described.
Abstract:
Access terminals are adapted to receive a non-empty general page message (GPM) which includes a number of page records that is less than a predefined maximum number of page records. In response to receiving the non-empty general page message (GPM), the access terminal can enter into a sleep state of a slotted idle mode. A method operational on an access terminal includes receiving a general page message (GPM) with at least one page record. A number of page records included in the general page message (GPM) may be determined to be less than a maximum number of page records allowed in the general page message (GPM). The access terminal may enter a sleep state in response to determining the number of page records in the received general page message (GPM) is less than the maximum allowed number of page records. Other aspects, embodiments, and features are also included.
Abstract:
Devices, systems, articles of manufacture, and methods for optimized page matching is disclosed. According to some embodiments, a portion of a sub-slot is read. A page message is extracted from the portion of the sub-slot. A page matching procedure is performed prior to the end of the sub-slot. Other aspects, embodiments, and features are also claimed and described.