Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided in which a probability of occurrence of an event expected to occur within a period of time is determined, where the event comprises one or more of a tune-away event and a suspension event. One or more transmission control protocol parameters are manipulated before the occurrence of the event when the probability of occurrence exceeds a threshold to increase a retransmission time out parameter value, or to maintain a desirable congestion window size. The transmission control protocol parameters may be manipulated by delaying, duplicating or dropping acknowledgements and/or by selectively dropping received packets before, during, or after the event.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided where, at a first wireless node, a weighted average of a frame loss rate is determined for a plurality of frames transmitted from a second wireless node using a first codec; feedback is transmitted to the second wireless node based at least in part on the frame loss rate; and one or more frames are received from the second wireless node using a second codec, responsive to transmitting the feedback. Also, transmitting from a first wireless node a plurality of frames to a second wireless node using a first codec; receiving frame loss rate information from the second wireless node responsive to the transmitting; selecting a second codec, based at least in part on the frame loss rate information, and transmitting a second plurality of frames to the second wireless node using the second codec.
Abstract:
Certain aspects of the present disclosure propose methods and apparatuses for reducing power consumption associated with performing reselection between radio access technologies (RATs). For example, a network that supports first and second RATs may obtain a list of neighbor base stations of a third RAT and determine whether to transmit the neighbor list on the first RAT, the second RAT, or both. In another aspect, a user equipment (UE) may combine information from the neighbor lists received from the first and the second RATs, and decide whether to take measurements in the third RAT based on the combined information. The UE may also maintain a central entity with measurements taken in the third RAT based on the neighbor lists received from the first and the second RATs and decide whether to perform cell reselection based on measurements in the central entity.
Abstract:
Systems, methods and apparatus for quality of service (QoS) flows in a communication system are provided. In one aspect a method is providing for establishing a QoS flow for an application in a user equipment device. The method includes receiving QoS information from one of an application and a network. The method further includes establishing a QoS communication flow for the application based on the received information. The method also includes receiving QoS information from the other of the application and the network and modifying the established QoS communication flow based on the additional information.
Abstract:
This disclosure provides systems, methods and apparatus for non-optimized handoffs for wireless communication. For example, the disclosure may be applied to enhance non-optimized handoff from a long-term evolution (LTE) network to an evolved high rate packet data (eHRPD) network. Systems, methods, and apparatus for reducing the interruption gap during handoffs from an LTE radio access network to an eHRPD network are also discussed. In one aspect, a method is provided for communicating information associated with a handoff of a wireless device from a source network to a target network. The method includes fetching a context for a device communicating via a first radio access system of a first network based in part on a unique identifier from a second radio access system of a second network.
Abstract:
A method, an apparatus, and a computer program product for wireless communication are provided in which 1x CSFB for communication of SMS messages in an LTE environment may be avoided. An IWS may receive a paging request message from a MSC, wherein the paging request message includes a first SMS service option indicating communication of a SMS message using a first RAT. The IWS may avoid an ESR procedure by analyzing the first SMS service option in the paging request message. Further the IWS may establish a common channel connection between the IWS and a target UE using a second RAT, wherein the first RAT and the second RAT are different.
Abstract:
Aspects are described for redirecting wireless terminals between wireless networks. In a first embodiment, a coverage quality of user equipment within a first wireless network is monitored. Multiple candidate frequencies are then ascertained in response to the coverage quality to facilitate a communication between the user equipment and a second wireless network. The candidate frequencies are then communicated to the user equipment. In another embodiment, an indication of a plurality of candidate frequencies is received, and a failure in performing a handover from a first wireless network to a second wireless network is detected. For this embodiment, the handover is attempted via a primary frequency. An alternative frequency is then selected from the plurality of candidate frequencies in response to the failure, and a communication with the second wireless network is established via the alternative frequency.
Abstract:
Systems and methods for storing information in a user zone list are described herein. According to the systems and methods herein, the user zone list includes multiple user zone files and the user zone files include information regarding a communication interface type.
Abstract:
Methods, devices and computer program products are disclosed that allow for wireless communication devices to operate more robustly in the slotted mode of operation in the event of network system loss. Specifically, present aspects require the wireless device to move to or remain in the slotted mode of operation as opposed to immediately entering into a system determination/acquisition mode upon failing to acquire an active set pilot during a slotted wake-up (420, NO). By moving to the slotted mode of operation or providing for additional slotted wake-ups (450), a number of attempts at acquiring the active set pilot can be performed before declaring the system as lost (470), thereby allowing for fading channel conditions to prevail without the need to re-acquire the lost system or otherwise acquire another system. Since the performance of the slotted mode is less power intensive than acquiring or re-acquiring a system, a substantial power savings is realized.
Abstract:
An access terminal pre-registers with a second access network via a first access network to ensure a quick handover in the future. Frequent pre-registration attempts are avoided by implementing a hysteresis timer that restricts when a pre-registration process can be initiated. The hysteresis timer is started when pre-registration is initiated by the access terminal. No new pre-registration attempts are permitted if the hysteresis timer has not expired. An abort condition can cause the hysteresis timer to be aborted early, and a new pre-registration can be initiated. Access points in the first access network may be grouped into one or more pre-registration zones. If the access terminal moves from a first access point to a second access point, a new pre-registration is skipped if the first and second access points have the same pre-registration zone or the second access point is aware of the pre-registration zone for the first access point.