Abstract: A method of wireless communication includes recording an absolute system frame number (SFN) of a target radio access technology (RAT) and/or recording a relative system frame number (SFN) difference between a serving radio access technology (RAT) and the target RAT. A transmission time interval (TTI) boundary, is determined after redirection, based at least in part on the recorded absolute frame number (SFN) and/or the recorded relative system frame number (SFN) difference.

Abstract: A user equipment (UE) may save power by reducing certain battery draining activities when a user is not close to or not using the UE. The UE may skip inter-radio access technology measurements to conserve battery life. The UE may also extend a paging periodicity when the battery power is low and/or when a sensor detects UE inactivity or a distant user.

Abstract: In mobile user equipment (UE) configured to allow for operation on multiple wireless communication networks, such as on a TD-SCDMA network or on a TDD-LTE network, an improved method for handing over a circuit-switched call is offered. The proposed circuit-witched fallback procedure, employing an improved UE hardware architecture, allows for certain connection setup procedures to occur in parallel, such as the UE pre-acquiring the TD-SCDMA cell. The parallel operations thus speed up the circuit-switched fallback procedure and reduce existing delays in executing circuit-switched fallback from TDD-LTE to TD-SCDMA networks.

Abstract: A user equipment (UE) may scale down a signal strength of a radio access technology (RAT) cell in a report to a serving cell to avoid multiple connection attempts to the same radio access technology cell. The UE may initiate a predefined timer, called a target cell timer, on which the scaling down of the reported signal strength of the particular RAT cell is based. The timer is initiated when the UE returns back to the serving cell after failure to access a top ranked RAT neighbor cell.

Abstract: In a multi-threaded processor mobile device, power consumption is reduced by matching a number of active processing resources with the data rate capability of a serving base station. The number of active resources may be adjusted to increase the amount of time the mobile device is in an all-waits period, where its processors are all idle at the same time. Increasing the all-waits time increases power savings. The mobile device may reduce the number of active resources to reduce power consumption or may increase the number of active resources temporarily in order to increase an all-waits period. The mobile device may also operate in a low power state by adjusting its active resources and operating at a reduced data rate, which is communicated to a base station.

Abstract: A user equipment (UE) avoids or reduces delay associated with measuring preferred neighbor cells by scheduling inter frequency measurements based on network indicated offset values provided by a network. In some instances, the UE performs measurements when the UE wakes up from a sleep mode. The UE schedules measurement of a neighbor cell with a lower offset value more frequently or earlier. The offset value can be a Qoffset value.

Abstract: A method of wireless communication includes transmitting a scheduling request through a common channel without performing a random access procedure, when uplink data remains in a buffer and no active grant exists during a call. The method also includes receiving a grant and initiating data transmission through an enhanced channel.

Abstract: In baton handover in TD-SCDMA communications, a user equipment (UE) may make use of multiple receivers in a receive diversity configuration to reduce call drops during baton handover. Following uplink handover, the UE may tune a first receiver to a target cell while maintaining a second receiver tuned to the source cell. If the UE measures a signal quality of the target cell greater than a signal quality of the source cell the UE tunes the second receiver to the target cell and complete the handover. If the UE measures a signal quality of the source cell greater than a signal quality of the target cell, the UE may switch the first receiver and UL back to the source cell and terminate the handover. Thus the UE may avoid handover to a target cell with poor signal quality.

Abstract: A method of wireless communication includes modifying an initial transmit power for a subsequent uplink physical channel based on the difference between the desired received powers of the subsequent uplink physical channel and a random access physical channel. When the difference between the desired power of the subsequent uplink physical channel and the random access physical channel is above a predefined threshold, the modification is based on a first adjusted factor. When the subsequent uplink physical channel and random access physical channel are on different frequencies (or time slots) the modification is based on a second adjusted factor.

Abstract: A user equipment (UE) may achieve faster cellular redirection, which reduces latency of the redirection, and improves throughput and user perception during redirection. In some instances, the UE may speed up the redirection by determining whether a connection release message with redirection information indicating a target radio access technology (RAT), a target cell and/or a target frequency has been received. The UE modifies a connection release complete procedure when the redirection information is received.

Abstract: In a method of wireless communication, a UE is redirected to a first RAT due to circuit switch fallback via a connection release from the second RAT. The UE is redirected based on redirection information that includes a dedicated preamble and a time period for the UE to perform a random access procedure in the first RAT. In one instance, the UE performs the random access procedure with the dedicated preamble during the time period. In addition, the UE performs the random access procedure with a non-dedicated preamble when no response is received to the dedicated preamble when the time period expires.

Abstract: A different inter radio access technology (IRAT) measurement schedule is provided in the execution phase relative to the IRAT measurement schedule implemented in the preparation phase. To improve the handover performance, the user equipment transmits an IRAT measurement report for multiple neighbor cells and prioritizes the IRAT measurement scheduling for neighbor cells triggering the IRAT measurement report. The prioritizing occurs until an IRAT handover command is received.

Abstract: Certain aspects of the present disclosure propose techniques for synchronizing TD-SCDMA and TDD-LTE systems. Certain aspects provide a method that generally includes obtaining, from a base station (BS) of a first radio access technology (RAT), timing and a system frame number (SFN) for a BS of a second RAT, and performing network acquisition operations with the BS of the second RAT using the timing and the SFN.

Abstract: Certain aspects of the present disclosure propose techniques for avoiding paging interval conflicts in a multimode terminal (MMT) capable of communicating via at least two different radio access technologies (RATs). Certain aspects provide a method for communicating, by an MMT, with first and second networks via first and second RATs. The method generally includes determining a discontinuous reception (DRX) cycle length of the first network, determining a paging cycle length of the second network, determining—based on the paging cycle length and the DRX cycle length—information associated with a position of a paging interval within the paging cycle length of the second network that avoids overlap between a paging interval of the first network and the paging interval of the second network, and communicating the information to the second network. For some aspects, the information may comprise a set of control channel cycle (CCC) indices.

Abstract: A user equipment (UE) uses idle time slots for system acquisition for IRAT measurement. To speed up the IRAT measurement, the UE starts system acquisition for a for first Global System for Mobile Communications (GSM) cell. The UE suspends the system acquisition of the first GSM cell when the first GSM cell signal strength falls below a signal strength of another GSM cell in a neighbor list. The UE then stores information acquired during the system acquisition of the first GSM cell, prior to the suspension. The UE starts a system acquisition for a second GSM cell after the suspension. The UE then resumes the system acquisition of the first GSM cell using the stored information after the second cell is acquired or the acquisition process aborts.

Abstract: A method of wireless communication includes transmitting an abbreviated scheduling request indicating a general size of a first grant when a UE has buffered data. A detailed schedule request is transmitted and indicates a specific size of a second grant after receiving the first grant. The second grant is adjusted based on the detailed scheduling request.

Abstract: A method and apparatus for wireless communication stores synchronization channel (SCH) timing for each identified Global System for Mobile Communications (GSM) cell. The stored SCH timing is used to perform base station identity code (BSIC) reconfirmation for an identified GSM cell without frequency correction channel (FCCH) tone detection and initial BSIC confirmation. The stored SCH timing is maintained across a plurality of user equipment (UE) states.

Abstract: A method of wireless communication in a wireless network includes transmitting synchronization shift (SS) bits with a channel quality index (CQI) report. The method also includes indicating, via the synchronization shift bits, one or more preferred time slots for receiving a high speed data transmission.

Abstract: A user equipment (UE) may achieve fast inter radio access technology (IRAT) measurement and better IRAT handover performance to effectively avoid call drops via smooth IRAT handover to other RATs during Time Division High Speed Downlink/Uplink Packet Access (TD-HSDPA/TD-HSUPA) data transmission. In some instances, the UE may speed up the IRAT measurement by request a resource allocation grant preference from a base station. The request indicates a reduced number of time resources and an increased number of other resources.

Abstract: Certain aspects of the present disclosure relate to a method for hardware activation of dual USIM TD-SCDMA multimode mobile terminals. The technique effectively provides for efficient power consumption. In one aspect, a mobile terminal may register dual mobile identifiers on a first radio access technology (RAT) using a first hardware module. If a call is set up, the mobile terminal activates a second hardware module and registers the unused mobile identifier with the second RAT.