Abstract:
When a user terminal is communicating with asynchronous systems, it may calculate the propagation delay of received signals using the frame offset from the asynchronous base stations. The user terminal may calculate a time difference between a frame reference of a first base station and a second base station and use the time difference to determine a propagation time difference.
Abstract:
A system acquisition is initiated to perform inter radio access technology (IRAT) measurement. A waiting period of time is provided before aborting the system acquisition. The period of time is adjustable based on at least one metric. The metric can be a frequency of available measurement gaps, a total number of available measurement gaps, and/or a length of each measurement gap within a subframe. The metric could also be an absolute signal strength of a single neighbor cell and/or a relative signal strength between neighbor cells. The metric could also be a user equipment (UE) measured signal strength compared to a network indicated threshold value for triggering an IRAT measurement report. The metric could also be a percentage of a tone that falls within a measurement gap.
Abstract:
In a system and method for wireless communication, a user equipment (UE) is configured to determine whether it failed to detect and decode a data transmission while the UE tuned away from a first RAT to a second RAT based on a grant sequence number. The HARQ buffer is flushed when the UE determines it missed a grant and the duration of the tune away gap meets a particular criteria.
Abstract:
A user equipment (UE) considers both the signal strength in time slot zero and the signal quality of the downlink traffic time slots when determining whether to send an IRAT measurement report to trigger IRAT handover to GSM.
Abstract:
An early BSIC (base station identity code) abort procedure includes comparing a first signal strength of a serving cell with a first threshold and comparing a second signal strength of a target cell to a second threshold. The first threshold is a sum of a network indicated threshold and a user equipment (UE) threshold. The second threshold is a difference between the network indicated threshold and the UE threshold. When the first signal strength is below the first threshold and the second signal strength is above the second threshold, the base station identity code (BSIC) procedure is initiated. A number of BSIC failure attempts is adaptively set before terminating the BSIC procedure.
Abstract:
A user equipment (UE) acquires a time of a first cell of a first RAT and receives instructions to handover from a source RAT to the first cell of a first target RAT. The handover is delayed based on the acquired timing and the UE communicates on the source RAT during the delay.
Abstract:
A method of buffer status reporting for multiple preserved data protocol (PDP) contexts includes communicating with a base station. A service request is sent to the base station, the service request requesting a set of radio access bearers (RABs) for a set of PDP contexts. The set of preserved PDP contexts includes one or more PDP contexts that have no uplink data ready to transmit on a high speed shared data channel. The set of preserved PDP contexts also includes one or more PDP contexts that have uplink data ready to transmit on the high speed shared data channel.
Abstract:
A method of wireless communication reports buffer size in TD-HSUPA networks. A protocol data unit is transmitted and an artificial buffer size is reported in response to the transmitted PDU. The artificial buffer size corresponds to the size of a scheduling request. The actual buffer size is reported when a NACK is received or when a round trip timer expires. The actual buffer size corresponds to a PDU retransmit size.
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:
Methods, systems, and devices are described for concurrently performing handoff-related measurements for neighbor cells using multiple input multiple output (MIMO) antenna resources. In one example, a mobile device is in communication with a serving cell. Handoff-related measurements of first wireless signals from a first neighbor cell are performed. The first wireless signals are received at first MIMO antenna resources of a device. Handoff-related measurements of second wireless signals from a second neighbor cell are performed, as well. The second wireless signals are received at second MIMO antenna resources concurrently with the first wireless signals received at the first MIMO antenna resources. The first handoff-related measurements and the second handoff-related measurements may be performed during a scan interval. A type of handoff-related measurement to perform may be determined based on a determined length of the scan interval.