Abstract:
A user equipment (UE) receives a circuit switched page from a first radio access technology (RAT) and a command instructing the UE to redirect to a second RAT. The command indicates a designated location area identity of the second RAT. The UE detects base stations of the second RAT and determines whether a strongest base station is in an area identified by the designated location area identity. The UE connects to the strongest base station based on the determining. When the designated location area identity is a permitted location area, the UE connects to the strongest base station when the location of the strongest base station is included in the permitted location area. When the designated location area identity is a prohibited location area, the UE connects to the strongest base station when the location of the strongest base station is not included in the prohibited location area.
Abstract:
A user equipment (UE) speed up handover/redirection when the user equipment is in a coverage area of multiple radio access technologies (RATs). In one instance the user equipment determines whether to transmit an uplink (UL) reconfiguration message. The user equipment delays transmission of the uplink reconfiguration message when a transition from a serving radio access technology to a non-serving preferred radio access technology has been initiated while the UE is on a packet switched (PS) data call.
Abstract:
A method and apparatus for improved downlink data transport with hybrid automatic repeat request (HARQ) feedback and a measurement gap are provided. A user equipment (UE) receives from a network a transmission grant for downlink data on a first control channel. The UE receives the data from the network via a transport channel. In response to the received data, the UE determines whether transmission of an acknowledgement message falls in a measurement gap. Upon determining that the transmission of the acknowledgement message by the UE falls in the measurement gap, and prior to receiving from the network a retransmission grant for the data on the first control channel, the UE sends the acknowledgement message on a second control channel in a sub-frame following the measurement gap. The first control channel is associated with the second control channel.
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:
The present disclosure presents a method and an apparatus for downlink decoding enhancements during inter radio access technology (IRAT) handovers. For example, the method may include identifying at a user equipment (UE) that a transmission received on a downlink channel during a transmission timing interval (TTI) is configured by a network entity for a DCH Measurement Occasion (DMO) or an idle interval gap for IRAT measurements. The method further includes performing a transport format combination indicator (TFCI) decoding and a cyclic redundancy check (CRC) of the transmission received during the TTI and determining that data received during the TTI is valid when the TFCI decoding and the CRC are successful. As such, downlink decoding enhancements during IRAT handovers may be achieved.
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 adaptively adjusts an internal clock rate and/or supply voltage based on an indication from a scheduling channel. A UE determines whether high speed data has been scheduled. The UE adjusts the clock speed and/or supply voltage based on the determination.